This document discusses the use of nanomaterials like nano silica and carbon nanotubes in ordinary Portland cement. It analyzes the microstructural properties using SEM, TEM, XRD techniques and corrosion rate using TAFEL techniques. Ordinary Portland cement was substituted with 1% nano silica by weight and carbon nanotubes were added in ratios from 0.01% to 0.07% by weight. The blended cement mortar was tested and previous studies found that nano silica and carbon nanotubes can improve the mechanical properties and durability of cement composites. The document reviews literature that analyzed how nano silica and carbon nanotubes fill pores, improve microstructure, increase strength and reduce permeability.
Nano technology can significantly improve current construction problems and may change construction processes and requirements. Nanotechnology involves processing, separation, consolidation, and deformation of materials at the atomic scale. Using nano-particles in concrete can improve its bulk properties, strength, durability, and reduce environmental contamination. Common nano-materials used in concrete include carbon nano-tubes, nano-silica, and titanium oxide, which can increase strength, workability, and self-cleaning abilities. Preparing nano-concrete involves mixing cement, aggregates, and nano-materials. Nano-concrete offers benefits like increased strength, workability, corrosion resistance, and lower life-cycle costs.
EXPERIMENTAL INVESTIGATION ON BEHAVIOUR OF NANO CONCRETEIAEME Publication
The influence of Nano-Silica on various properties of concrete is obtained by replacing the cement with various percentages of Nano-Silica. Nano-Silica is used as a partial replacement for cement in the range of 2.5%, 3%, and 3.5% for M25 mix. Specimens are casted using Nano-Silica concrete. Laboratory tests were conducted to determine the compressive strength, split tensile and flexural strength of Nano-Silica concrete at the age of 7 and 28 days. Results indicate that the concrete, by using Nano-Silica powder, was able to increase its compressive strength. However, the density is reduced compared to standard mix of concrete. The replacement of cement with 3% Nano-Silica results in higher strength and reduction in the permeability than the controlled concrete. The replacement of cement with Nano-Silica more than 3% results in the reduction of various properties of Nano-Silica concrete.
Behavioural Investigation on the use of Nanosilica as An Additive in ConcreteIDES Editor
Influence of Nano science in the Civil Engineering
industry outbreaks significant solutions for numerous
unidentified blending of materials evolve from a Nano product,
which can create gigantic changes in the world of Concrete
both technically and economically. The Significance of
Nanosilica as an additive in my experimental research
congeals the behaviour of Concrete considerably. Essential
manipulations are carried out here by using a distinctive
methodology and by conducting various tests to innovate a
better performance concrete thereby found the enhancement
of its property. Nano silica as an additive in added mainly to
fill up the deviation arises with the addition of flyash, which
consequently deviates the strength after its initial setting
period. “Ref. [3]” This presence of Nanosilica constructs the
silica (S) in the sand, which ultimately reacts with calcium
hydrate (CH) in the cement at Nano scale to form C-S-H
bond as its improve the strengthening factor of concrete, which
are in turn helpful in the achieving high compressive strength
even in early days. Here the addition of Nanosilica are done
partially with an previously fly ash replaced concrete in a
gradual basis, as the comparative results of a Fly ash concrete
and Fly ash with Nanosilica added concrete are tested
experimentally. The flexural behaviour of the Nano concrete
found to be imperative part as analyzed from the Beam Column
joint test setup. It has been clearly concluded in the results
identified along with the ductility behaviour and the Load vs.
Deflection analysis done for the specimen casted. The standard
types of toughness test are carried out, which generated data
under specific loading conditions with respect to their
component design approaches. Also an overview on the
experimental tests conducted in relation with the strength
and durability of concrete were presented under the influence
of Nanosilica in concrete.
concrete which has enabled the study of chloride diffusion in concrete (which causes corrosion of reinforcement). Concrete is, after all, a macro-material strongly influenced by its nano-properties and understanding it at this new level is yielding new avenues for improvement of strength, durability and monitoring.
nanotechnology in concrete materials
nano cement
nanotechnology review
applications of concrete
hydraulic cement in caulking tubes
quikrete msds sheets
ingram readymix
nano concrete sealer
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
seminar topics pdf
best seminar topics for civil engineering
seminar topics for mechanical engineers
latest civil engineering seminar topics
EFFECT OF NANO-SILICA ON CONCRETE CONTAINING METAKAOLINIAEME Publication
In this paper the results of an experimental investigation on the use of Metakaolin (MK) and Nano-Silica (NS) on various properties of concrete are presented. Metakaolin and Nano-Silica are used as partial replacement of cement for the preparation of concrete. In the present investigation initially cement is partially replaced by Metakaolin 5% and 10% by weight. Further investigation is carried out by combined replacement of Metakaolin at 5% and 10% with Nano-Silica at 1%, 2% and 3% by weight of cement. For structural applications the various properties, such as compressive strength, split tensile strength, modulus of elasticity and flexural strength of M25 grade concrete containing MK and NS are evaluated and the results are compared with the controlled concrete. Based on the test results, it can be observed that concrete prepared with a combination of 5% MK and 2% NS indicated increased strength compared to the controlled concrete.
Nanotechnology ("nanotech") is manipulation of matter on an atomic, molecular, and supramolecular scale. The earliest, widespread description of nanotechnology[1][2] referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products, also now referred to as molecular nanotechnology. A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative, which defines nanotechnology as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers. This definition reflects the fact that quantum mechanical effects are important at this quantum-realm scale, and so the definition shifted from a particular technological goal to a research category inclusive of all types of research and technologies that deal with the special properties of matter which occur below the given size threshold. It is therefore common to see the plural form "nanotechnologies" as well as "nanoscale technologies" to refer to the broad range of research and applications whose common trait is size. Because of the variety of potential applications (including industrial and military), governments have invested billions of dollars in nanotechnology research. Through 2012, the USA has invested $3.7 billion using its National Nanotechnology Initiative, the European Union has invested $1.2 billion, and Japan has invested $750 million.[3]
Nanotechnology as defined by size is naturally very broad, including fields of science as diverse as surface science, organic chemistry, molecular biology, semiconductor physics, energy storage,[4][5] microfabrication,[6] molecular engineering, etc.[7] The associated research and applications are equally diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly,[8] from developing new materials with dimensions on the nanoscale to direct control of matter on the atomic scale.
Scientists currently debate the future implications of nanotechnology. Nanotechnology may be able to create many new materials and devices with a vast range of applications, such as in nanomedicine, nanoelectronics, biomaterials energy production, and consumer products. On the other hand, nanotechnology raises many of the same issues as any new technology, including concerns about the toxicity and environmental impact of nanomaterials,[9] and their potential effects on global economics, as well as speculation about various doomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted.
experimental study on concrete using micro silica and nano silicaArmstra Junoly
This is our civil engineering project regarding increasing the strength of concrete which is successfully proved with references and literature reviews
This document discusses how nanotechnology can be used to improve concrete and make it more sustainable. It first provides background on green building efforts and the environmental impacts of traditional concrete production. It then introduces nanotechnology and describes how nanoparticles of materials like Al2O3, ZrO2, TiO2, and Fe2O3 can be added to concrete to enhance its mechanical, physical and chemical properties. The additions of these nanoparticles increase concrete's strength, permeability and durability. This could lead to more sustainable concrete that uses less cement and has a longer lifespan.
Nano technology can significantly improve current construction problems and may change construction processes and requirements. Nanotechnology involves processing, separation, consolidation, and deformation of materials at the atomic scale. Using nano-particles in concrete can improve its bulk properties, strength, durability, and reduce environmental contamination. Common nano-materials used in concrete include carbon nano-tubes, nano-silica, and titanium oxide, which can increase strength, workability, and self-cleaning abilities. Preparing nano-concrete involves mixing cement, aggregates, and nano-materials. Nano-concrete offers benefits like increased strength, workability, corrosion resistance, and lower life-cycle costs.
EXPERIMENTAL INVESTIGATION ON BEHAVIOUR OF NANO CONCRETEIAEME Publication
The influence of Nano-Silica on various properties of concrete is obtained by replacing the cement with various percentages of Nano-Silica. Nano-Silica is used as a partial replacement for cement in the range of 2.5%, 3%, and 3.5% for M25 mix. Specimens are casted using Nano-Silica concrete. Laboratory tests were conducted to determine the compressive strength, split tensile and flexural strength of Nano-Silica concrete at the age of 7 and 28 days. Results indicate that the concrete, by using Nano-Silica powder, was able to increase its compressive strength. However, the density is reduced compared to standard mix of concrete. The replacement of cement with 3% Nano-Silica results in higher strength and reduction in the permeability than the controlled concrete. The replacement of cement with Nano-Silica more than 3% results in the reduction of various properties of Nano-Silica concrete.
Behavioural Investigation on the use of Nanosilica as An Additive in ConcreteIDES Editor
Influence of Nano science in the Civil Engineering
industry outbreaks significant solutions for numerous
unidentified blending of materials evolve from a Nano product,
which can create gigantic changes in the world of Concrete
both technically and economically. The Significance of
Nanosilica as an additive in my experimental research
congeals the behaviour of Concrete considerably. Essential
manipulations are carried out here by using a distinctive
methodology and by conducting various tests to innovate a
better performance concrete thereby found the enhancement
of its property. Nano silica as an additive in added mainly to
fill up the deviation arises with the addition of flyash, which
consequently deviates the strength after its initial setting
period. “Ref. [3]” This presence of Nanosilica constructs the
silica (S) in the sand, which ultimately reacts with calcium
hydrate (CH) in the cement at Nano scale to form C-S-H
bond as its improve the strengthening factor of concrete, which
are in turn helpful in the achieving high compressive strength
even in early days. Here the addition of Nanosilica are done
partially with an previously fly ash replaced concrete in a
gradual basis, as the comparative results of a Fly ash concrete
and Fly ash with Nanosilica added concrete are tested
experimentally. The flexural behaviour of the Nano concrete
found to be imperative part as analyzed from the Beam Column
joint test setup. It has been clearly concluded in the results
identified along with the ductility behaviour and the Load vs.
Deflection analysis done for the specimen casted. The standard
types of toughness test are carried out, which generated data
under specific loading conditions with respect to their
component design approaches. Also an overview on the
experimental tests conducted in relation with the strength
and durability of concrete were presented under the influence
of Nanosilica in concrete.
concrete which has enabled the study of chloride diffusion in concrete (which causes corrosion of reinforcement). Concrete is, after all, a macro-material strongly influenced by its nano-properties and understanding it at this new level is yielding new avenues for improvement of strength, durability and monitoring.
nanotechnology in concrete materials
nano cement
nanotechnology review
applications of concrete
hydraulic cement in caulking tubes
quikrete msds sheets
ingram readymix
nano concrete sealer
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
seminar topics pdf
best seminar topics for civil engineering
seminar topics for mechanical engineers
latest civil engineering seminar topics
EFFECT OF NANO-SILICA ON CONCRETE CONTAINING METAKAOLINIAEME Publication
In this paper the results of an experimental investigation on the use of Metakaolin (MK) and Nano-Silica (NS) on various properties of concrete are presented. Metakaolin and Nano-Silica are used as partial replacement of cement for the preparation of concrete. In the present investigation initially cement is partially replaced by Metakaolin 5% and 10% by weight. Further investigation is carried out by combined replacement of Metakaolin at 5% and 10% with Nano-Silica at 1%, 2% and 3% by weight of cement. For structural applications the various properties, such as compressive strength, split tensile strength, modulus of elasticity and flexural strength of M25 grade concrete containing MK and NS are evaluated and the results are compared with the controlled concrete. Based on the test results, it can be observed that concrete prepared with a combination of 5% MK and 2% NS indicated increased strength compared to the controlled concrete.
Nanotechnology ("nanotech") is manipulation of matter on an atomic, molecular, and supramolecular scale. The earliest, widespread description of nanotechnology[1][2] referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products, also now referred to as molecular nanotechnology. A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative, which defines nanotechnology as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers. This definition reflects the fact that quantum mechanical effects are important at this quantum-realm scale, and so the definition shifted from a particular technological goal to a research category inclusive of all types of research and technologies that deal with the special properties of matter which occur below the given size threshold. It is therefore common to see the plural form "nanotechnologies" as well as "nanoscale technologies" to refer to the broad range of research and applications whose common trait is size. Because of the variety of potential applications (including industrial and military), governments have invested billions of dollars in nanotechnology research. Through 2012, the USA has invested $3.7 billion using its National Nanotechnology Initiative, the European Union has invested $1.2 billion, and Japan has invested $750 million.[3]
Nanotechnology as defined by size is naturally very broad, including fields of science as diverse as surface science, organic chemistry, molecular biology, semiconductor physics, energy storage,[4][5] microfabrication,[6] molecular engineering, etc.[7] The associated research and applications are equally diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly,[8] from developing new materials with dimensions on the nanoscale to direct control of matter on the atomic scale.
Scientists currently debate the future implications of nanotechnology. Nanotechnology may be able to create many new materials and devices with a vast range of applications, such as in nanomedicine, nanoelectronics, biomaterials energy production, and consumer products. On the other hand, nanotechnology raises many of the same issues as any new technology, including concerns about the toxicity and environmental impact of nanomaterials,[9] and their potential effects on global economics, as well as speculation about various doomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted.
experimental study on concrete using micro silica and nano silicaArmstra Junoly
This is our civil engineering project regarding increasing the strength of concrete which is successfully proved with references and literature reviews
This document discusses how nanotechnology can be used to improve concrete and make it more sustainable. It first provides background on green building efforts and the environmental impacts of traditional concrete production. It then introduces nanotechnology and describes how nanoparticles of materials like Al2O3, ZrO2, TiO2, and Fe2O3 can be added to concrete to enhance its mechanical, physical and chemical properties. The additions of these nanoparticles increase concrete's strength, permeability and durability. This could lead to more sustainable concrete that uses less cement and has a longer lifespan.
Study of strength properties of concrete by using micro silica and nano silicaeSAT Publishing House
This document summarizes a study on the strength properties of concrete with the addition of micro silica and nano silica. The study tested the compressive strength, split tensile strength, and flexural strength of M40 and M50 grade concrete with various replacements of cement by micro silica (5-15%) and nano silica (1-2.5%). The results showed that concrete composites with superior strength properties can be produced using micro silica, nano silica, or a combination of both materials.
Nano concrete is a type of concrete made with portland cement particles smaller than 500nm as the binding agent. Adding nano materials like carbon nanotubes, nano-silica, and polycarboxylates can improve properties of conventional concrete such as increasing compressive strength, reducing water needs, and improving workability. Nano concrete produces stronger, more durable concrete and reduces environmental impact by requiring less cement and additives.
This document summarizes a seminar presentation on nano concrete. It introduces nanotechnology and how it can improve concrete properties when nano particles are added. Specific nano materials discussed that are used in concrete include carbon nanotubes, nano-silica, and polycarboxylates. The results shown include increased compression strength up to 90MPa in 28 days. The advantages listed are higher strength concrete that uses less additives and cement. Disadvantages include limited availability and means to produce nano materials currently. In conclusion, well dispersed nano particles can increase concrete viscosity, strength, and bond between cement and aggregates.
This document discusses nano concrete, which is concrete made with Portland cement particles smaller than 500nm and sometimes additional nano particles. Nano materials like carbon nanotubes and nano-silica are added to improve properties. Carbon nanotubes increase strength by preventing cracks from spreading. Nano-silica improves early hydration and strength. Using nano materials leads to higher strength concrete that uses less cement. Challenges include manufacturing nano cement and controlling heat of hydration.
This document discusses the use of nano materials in concrete. It describes that nano materials, which are less than 100 nanometers in size, can significantly change the mechanical, thermal, electrical, and chemical properties of concrete. Common nano materials used include nano silica, carbon nano tubes, and titanium oxide. The document outlines the advantages these materials provide such as increased strength and durability. It also summarizes the results of a laboratory study that found nano silica concrete produced the most uniform microstructure and lowest surface roughness.
IRJET- Experimental Investigation of Engineering Properties of Hollow Concret...IRJET Journal
The document investigates the engineering properties of hollow concrete blocks reinforced with basalt fibre. Basalt fibre is added to hollow concrete blocks in amounts of 0.5%, 1%, and 1.5% by volume of cement to study its effect on compressive strength. Testing shows that with increased basalt fibre content, the compressive strength and density of the hollow blocks increases while water absorption decreases, with the 1.5% fibre content blocks performing best. The aim is to reduce cracking in hollow concrete block walls through the addition of basalt fibre.
Mechanical behaviour of cement mortar & concrete for application of nano ...Mainak Ghosal
The document discusses research on improving cement and concrete properties through the addition of nano-materials like nano-silica, carbon nanotubes, and titanium dioxide. Testing of cement mortar cubes and M40 grade concrete found that the addition of 0.75% nano-silica increased the 28-day compressive strength of mortar by 32.55% while 0.02% carbon nanotubes increased the strength of concrete by 36% at 28 days. The optimum dosages identified through mortar testing - 0.75% nano-silica, 0.02% carbon nanotubes, and 1% titanium dioxide - also improved the strengths of concrete mixtures. Further microstructural characterization is needed to better understand the
This document provides an overview of nanocomposite materials. It defines nanocomposites as materials with at least one component that has dimensions between 1-100 nm. Nanocomposites consist of inorganic or organic nanoparticles embedded in a matrix. They exhibit enhanced and unique properties compared to bulk materials due to quantum effects and high surface area. The document discusses various synthesis methods for nanomaterials and nanocomposites, as well as their advantages and limitations.
Nanotechnology in Building construction materialRinoy Bhagora
Nanotechnology can be used to improve the properties of concrete and other construction materials. The addition of nano-silica or carbon nanotubes to concrete can increase its strength and durability by densifying its microstructure. A self-cleaning glass called Indigo Tower uses a titanium dioxide nano-coating that breaks down air pollutants using a photocatalytic process, powered by sunlight. Nanoparticles can also strengthen steel by reducing fatigue and embrittlement. Fire-protective glass uses silica nanoparticles to form a heat shield, and nano-coatings on regular glass aim to filter infrared light and regulate heat gain in buildings.
This document presents a summary of a student project on smart materials and nanocomposites. It defines smart materials and classifies materials into metals, ceramics, and polymers. Composites and nanocomposites are introduced as combinations of materials that produce enhanced properties. Key advantages of nanocomposites include high strength, light weight, and multifunctionality. Various engineering applications are discussed along with the need for coatings, coating components and methods. The conclusion emphasizes the protective functions of coatings and potential benefits of using nanomaterials for corrosion protection.
This document summarizes a seminar on nano concrete. It introduces nano concrete as concrete made with portland cement particles smaller than 500nm as the binding agent. Nano materials like carbon nanotubes, nano-silica, and polycarboxylates are added to improve properties. Benefits of nano concrete include higher strength, workability with less water, reduced environmental impact, and cost savings compared to traditional concrete. The document concludes that nano particles improve hydration, bonding, and strength characteristics of concrete. There is future potential to develop smarter and more economical concretes using nano-cement technologies.
Nanotechnology offers possibilities to improve materials used in civil engineering. At the nanoscale, materials demonstrate new properties. Concrete can be made stronger and more durable using nano-silica and carbon nanotubes. Steel can incorporate nanoparticles to increase strength and resistance to fatigue and corrosion. Titanium dioxide and carbon nanotubes make glass self-cleaning. Nanoparticles in coatings provide insulation and hydrophobicity. While costs are currently high, nanotechnology research aims to advance sustainability in the construction industry by developing higher performance, longer lasting materials.
This document summarizes a study on the effect of environmental degradation on the viscoelastic response of epoxy resins modified with carbon nanotubes (CNTs) and carbon fiber reinforced plastics (CFRPs) made with the modified epoxy. CNTs were added to an epoxy resin at concentrations from 0.1-1% using high-shear mixing. The modified resin was used to make unreinforced cast specimens and CFRPs with a 0.5% CNT content. All specimens were subjected to hydrothermal conditioning. Dynamic mechanical analysis of the conditioned specimens showed degradation of properties like damping and storage modulus for the modified materials compared to unmodified controls.
Nanotechnology involves adding small amounts (<10%) of nano-scale clay particles to plastics to dramatically improve their performance properties without increasing density or reducing light transmission. Nanoclay was first developed in the 1980s at Toyota and can strengthen, lighten, and make plastics less expensive and more versatile. Nanofillers have long been used in plastics to improve mechanical and physical properties by filling space, disrupting polymer structure, and immobilizing or orienting polymer groups. Polymer nanocomposites enhance mechanical and barrier properties with only minimal increases in density.
This document provides an introduction to nanotechnology and its applications in civil engineering. It discusses how nanotechnology can be used to improve properties of concrete, steel, glass, and other building materials. Specifically, it describes how nano-silica and carbon nanotubes added to concrete can increase its strength and durability. It also explains how copper nanoparticles in steel can enhance fatigue resistance and heat resistance. The document concludes by noting challenges of nanotechnology such as health risks to workers and high production costs.
This document discusses polymer nanocomposites, which combine a polymer matrix with nanoscale inorganic fillers. Polymer nanocomposites can overcome limitations of conventional composites and monolithic polymers by exhibiting improved mechanical, thermal, and optical properties due to the high surface area of nanoparticles. Properties of nanocomposites depend on the matrix polymer, nanoparticle fillers, and their dispersion within the polymer. Potential applications of nanocomposites include use in automobiles, electronics, packaging, and military equipment by exploiting their enhanced strength, thermal and chemical resistance.
Synthesis and characterization of nanocompositessowmya sankaran
This document defines and discusses different types of nanocomposites. It begins by defining nanotechnology and some unique properties at the nanoscale. It then discusses different types of nanomaterials that can be used in nanocomposites like nanoparticles, nanotubes, and nanorods. The document outlines three main types of nanocomposites - metal matrix, ceramic matrix, and polymer matrix - and provides examples and processing methods for each type. It concludes by discussing several applications of nanocomposites in areas like food packaging, environmental protection, aerospace, automotive, and batteries.
Nanocomposite biomaterials are multiphase solid materials where one phase has dimensions less than 100 nm. This nano-scale structure gives nanocomposites improved mechanical, electrical, thermal and other properties compared to their components. There are several types of nanocomposite biomaterials including ceramic-matrix nanocomposites, polymer-matrix nanocomposites, polymer-silicate nanocomposites, elastomeric nanocomposites, and bionanocomposites. Bionanocomposites are of particular interest for biomedical applications like tissue engineering due to their biocompatibility and ability to be biodegraded in the body.
Nanotechnology has many potential applications in building materials to improve their properties. Concrete could be made stronger and more durable through the use of nano-silica and carbon nanotubes. Nano-silica improves particle packing in concrete and densifies its microstructure, increasing strength and durability by reducing calcium leaching and blocking water penetration. Carbon nanotubes have exceptional strength and stiffness properties and preliminary research shows that adding small amounts of carbon nanotubes to concrete can significantly increase its compressive and flexural strength. Understanding concrete at the nano-level through techniques like atomic force microscopy and focused ion beam imaging can provide insights to optimize its performance through nanoscale engineering of its composition.
Application of nano-technology in construction Detailed ReportAmeer Muhammed
This document discusses the application of nanotechnology in civil engineering and construction materials. It defines nanomaterials as substances with at least one dimension between 1-100nm. Several potential nanomaterials for construction are described, including carbon nanotubes, titanium dioxide, silicon dioxide, and silver nanoparticles. Carbon nanotubes could enhance mechanical properties and structural health monitoring in concrete. Titanium dioxide can improve self-cleaning properties and air quality when added to surfaces. The document also outlines how nanotechnologies could generate stronger and lighter composites, better cementitious materials, and improved insulation for construction. Concrete properties like strength and durability may be enhanced through additions of nanosilica or carbon nanotubes.
Study of strength properties of concrete by using micro silica and nano silicaeSAT Publishing House
This document summarizes a study on the strength properties of concrete with the addition of micro silica and nano silica. The study tested the compressive strength, split tensile strength, and flexural strength of M40 and M50 grade concrete with various replacements of cement by micro silica (5-15%) and nano silica (1-2.5%). The results showed that concrete composites with superior strength properties can be produced using micro silica, nano silica, or a combination of both materials.
Nano concrete is a type of concrete made with portland cement particles smaller than 500nm as the binding agent. Adding nano materials like carbon nanotubes, nano-silica, and polycarboxylates can improve properties of conventional concrete such as increasing compressive strength, reducing water needs, and improving workability. Nano concrete produces stronger, more durable concrete and reduces environmental impact by requiring less cement and additives.
This document summarizes a seminar presentation on nano concrete. It introduces nanotechnology and how it can improve concrete properties when nano particles are added. Specific nano materials discussed that are used in concrete include carbon nanotubes, nano-silica, and polycarboxylates. The results shown include increased compression strength up to 90MPa in 28 days. The advantages listed are higher strength concrete that uses less additives and cement. Disadvantages include limited availability and means to produce nano materials currently. In conclusion, well dispersed nano particles can increase concrete viscosity, strength, and bond between cement and aggregates.
This document discusses nano concrete, which is concrete made with Portland cement particles smaller than 500nm and sometimes additional nano particles. Nano materials like carbon nanotubes and nano-silica are added to improve properties. Carbon nanotubes increase strength by preventing cracks from spreading. Nano-silica improves early hydration and strength. Using nano materials leads to higher strength concrete that uses less cement. Challenges include manufacturing nano cement and controlling heat of hydration.
This document discusses the use of nano materials in concrete. It describes that nano materials, which are less than 100 nanometers in size, can significantly change the mechanical, thermal, electrical, and chemical properties of concrete. Common nano materials used include nano silica, carbon nano tubes, and titanium oxide. The document outlines the advantages these materials provide such as increased strength and durability. It also summarizes the results of a laboratory study that found nano silica concrete produced the most uniform microstructure and lowest surface roughness.
IRJET- Experimental Investigation of Engineering Properties of Hollow Concret...IRJET Journal
The document investigates the engineering properties of hollow concrete blocks reinforced with basalt fibre. Basalt fibre is added to hollow concrete blocks in amounts of 0.5%, 1%, and 1.5% by volume of cement to study its effect on compressive strength. Testing shows that with increased basalt fibre content, the compressive strength and density of the hollow blocks increases while water absorption decreases, with the 1.5% fibre content blocks performing best. The aim is to reduce cracking in hollow concrete block walls through the addition of basalt fibre.
Mechanical behaviour of cement mortar & concrete for application of nano ...Mainak Ghosal
The document discusses research on improving cement and concrete properties through the addition of nano-materials like nano-silica, carbon nanotubes, and titanium dioxide. Testing of cement mortar cubes and M40 grade concrete found that the addition of 0.75% nano-silica increased the 28-day compressive strength of mortar by 32.55% while 0.02% carbon nanotubes increased the strength of concrete by 36% at 28 days. The optimum dosages identified through mortar testing - 0.75% nano-silica, 0.02% carbon nanotubes, and 1% titanium dioxide - also improved the strengths of concrete mixtures. Further microstructural characterization is needed to better understand the
This document provides an overview of nanocomposite materials. It defines nanocomposites as materials with at least one component that has dimensions between 1-100 nm. Nanocomposites consist of inorganic or organic nanoparticles embedded in a matrix. They exhibit enhanced and unique properties compared to bulk materials due to quantum effects and high surface area. The document discusses various synthesis methods for nanomaterials and nanocomposites, as well as their advantages and limitations.
Nanotechnology in Building construction materialRinoy Bhagora
Nanotechnology can be used to improve the properties of concrete and other construction materials. The addition of nano-silica or carbon nanotubes to concrete can increase its strength and durability by densifying its microstructure. A self-cleaning glass called Indigo Tower uses a titanium dioxide nano-coating that breaks down air pollutants using a photocatalytic process, powered by sunlight. Nanoparticles can also strengthen steel by reducing fatigue and embrittlement. Fire-protective glass uses silica nanoparticles to form a heat shield, and nano-coatings on regular glass aim to filter infrared light and regulate heat gain in buildings.
This document presents a summary of a student project on smart materials and nanocomposites. It defines smart materials and classifies materials into metals, ceramics, and polymers. Composites and nanocomposites are introduced as combinations of materials that produce enhanced properties. Key advantages of nanocomposites include high strength, light weight, and multifunctionality. Various engineering applications are discussed along with the need for coatings, coating components and methods. The conclusion emphasizes the protective functions of coatings and potential benefits of using nanomaterials for corrosion protection.
This document summarizes a seminar on nano concrete. It introduces nano concrete as concrete made with portland cement particles smaller than 500nm as the binding agent. Nano materials like carbon nanotubes, nano-silica, and polycarboxylates are added to improve properties. Benefits of nano concrete include higher strength, workability with less water, reduced environmental impact, and cost savings compared to traditional concrete. The document concludes that nano particles improve hydration, bonding, and strength characteristics of concrete. There is future potential to develop smarter and more economical concretes using nano-cement technologies.
Nanotechnology offers possibilities to improve materials used in civil engineering. At the nanoscale, materials demonstrate new properties. Concrete can be made stronger and more durable using nano-silica and carbon nanotubes. Steel can incorporate nanoparticles to increase strength and resistance to fatigue and corrosion. Titanium dioxide and carbon nanotubes make glass self-cleaning. Nanoparticles in coatings provide insulation and hydrophobicity. While costs are currently high, nanotechnology research aims to advance sustainability in the construction industry by developing higher performance, longer lasting materials.
This document summarizes a study on the effect of environmental degradation on the viscoelastic response of epoxy resins modified with carbon nanotubes (CNTs) and carbon fiber reinforced plastics (CFRPs) made with the modified epoxy. CNTs were added to an epoxy resin at concentrations from 0.1-1% using high-shear mixing. The modified resin was used to make unreinforced cast specimens and CFRPs with a 0.5% CNT content. All specimens were subjected to hydrothermal conditioning. Dynamic mechanical analysis of the conditioned specimens showed degradation of properties like damping and storage modulus for the modified materials compared to unmodified controls.
Nanotechnology involves adding small amounts (<10%) of nano-scale clay particles to plastics to dramatically improve their performance properties without increasing density or reducing light transmission. Nanoclay was first developed in the 1980s at Toyota and can strengthen, lighten, and make plastics less expensive and more versatile. Nanofillers have long been used in plastics to improve mechanical and physical properties by filling space, disrupting polymer structure, and immobilizing or orienting polymer groups. Polymer nanocomposites enhance mechanical and barrier properties with only minimal increases in density.
This document provides an introduction to nanotechnology and its applications in civil engineering. It discusses how nanotechnology can be used to improve properties of concrete, steel, glass, and other building materials. Specifically, it describes how nano-silica and carbon nanotubes added to concrete can increase its strength and durability. It also explains how copper nanoparticles in steel can enhance fatigue resistance and heat resistance. The document concludes by noting challenges of nanotechnology such as health risks to workers and high production costs.
This document discusses polymer nanocomposites, which combine a polymer matrix with nanoscale inorganic fillers. Polymer nanocomposites can overcome limitations of conventional composites and monolithic polymers by exhibiting improved mechanical, thermal, and optical properties due to the high surface area of nanoparticles. Properties of nanocomposites depend on the matrix polymer, nanoparticle fillers, and their dispersion within the polymer. Potential applications of nanocomposites include use in automobiles, electronics, packaging, and military equipment by exploiting their enhanced strength, thermal and chemical resistance.
Synthesis and characterization of nanocompositessowmya sankaran
This document defines and discusses different types of nanocomposites. It begins by defining nanotechnology and some unique properties at the nanoscale. It then discusses different types of nanomaterials that can be used in nanocomposites like nanoparticles, nanotubes, and nanorods. The document outlines three main types of nanocomposites - metal matrix, ceramic matrix, and polymer matrix - and provides examples and processing methods for each type. It concludes by discussing several applications of nanocomposites in areas like food packaging, environmental protection, aerospace, automotive, and batteries.
Nanocomposite biomaterials are multiphase solid materials where one phase has dimensions less than 100 nm. This nano-scale structure gives nanocomposites improved mechanical, electrical, thermal and other properties compared to their components. There are several types of nanocomposite biomaterials including ceramic-matrix nanocomposites, polymer-matrix nanocomposites, polymer-silicate nanocomposites, elastomeric nanocomposites, and bionanocomposites. Bionanocomposites are of particular interest for biomedical applications like tissue engineering due to their biocompatibility and ability to be biodegraded in the body.
Nanotechnology has many potential applications in building materials to improve their properties. Concrete could be made stronger and more durable through the use of nano-silica and carbon nanotubes. Nano-silica improves particle packing in concrete and densifies its microstructure, increasing strength and durability by reducing calcium leaching and blocking water penetration. Carbon nanotubes have exceptional strength and stiffness properties and preliminary research shows that adding small amounts of carbon nanotubes to concrete can significantly increase its compressive and flexural strength. Understanding concrete at the nano-level through techniques like atomic force microscopy and focused ion beam imaging can provide insights to optimize its performance through nanoscale engineering of its composition.
Application of nano-technology in construction Detailed ReportAmeer Muhammed
This document discusses the application of nanotechnology in civil engineering and construction materials. It defines nanomaterials as substances with at least one dimension between 1-100nm. Several potential nanomaterials for construction are described, including carbon nanotubes, titanium dioxide, silicon dioxide, and silver nanoparticles. Carbon nanotubes could enhance mechanical properties and structural health monitoring in concrete. Titanium dioxide can improve self-cleaning properties and air quality when added to surfaces. The document also outlines how nanotechnologies could generate stronger and lighter composites, better cementitious materials, and improved insulation for construction. Concrete properties like strength and durability may be enhanced through additions of nanosilica or carbon nanotubes.
This document reviews the use of nanotechnology in the construction industry. It discusses how nanotechnology is being used to improve concrete in several ways, such as adding nanoparticles like nano-silica to increase strength and durability. Carbon nanotubes are also being researched as an additive to increase concrete's strength, stiffness, and energy absorption capabilities. Nanotechnology enables self-compacting concrete that does not require vibration during pouring and self-healing concrete that can repair minor cracks. Overall, the document outlines various applications of nanotechnology in construction materials and structures to enhance performance.
International Journal of Engineering Research and DevelopmentIJERD Editor
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This document discusses the application of nanotechnology in construction engineering. It begins with an abstract that overviews how nanotechnology can revolutionize civil engineering practices by conceiving innovative infrastructure systems. It then reviews literature on the topic and discusses various nanomaterials like nano-cement, nano-coatings for concrete, nano-steel, nano-glass, and nano-composites. It explains how these materials can provide properties like self-sensing, self-healing, and better strength and durability. The document concludes by noting that while nano-materials may be initially costly, they can reduce long-term maintenance costs and improve durability.
The Impact of Nano Clay on Normal and High-Performance Concrete Characteristi...Shakerqaidi
This document reviews the impact of nano clay on the characteristics of normal and high-performance concrete. The addition of nano clay to high-performance concrete is found to increase compressive and flexural strength as well as durability attributes like resistance to high temperatures and sulfate attack, while decreasing porosity, permeability, and water absorption. This enhancement results from nano clay particles working as nano reinforcements, nanofillers, and reactive pozzolans that promote hydration and improve material properties. The document also provides background on nano clay, including its production methods, types, and physical and chemical properties. It discusses how nano clay can enhance cement hydration and impact the hardened properties of concrete.
Nano technollogy and Nano materils in concreteitis5
Nano technology and materials in concrete can improve concrete quality and strength. Nanoparticles like nano silica, carbon nanotubes, and titanium oxide added to concrete can fill pores and increase density, resulting in greater strength and durability. Tests on nano concrete specimens showed lower roughness and higher compressive strength compared to normal concrete. Nano concrete production could reduce cement usage by 35-45% and lower environmental impacts by decreasing CO2 emissions from cement production. Applications of nano concrete include bridges, pipes, reservoirs, and roads.
Effects of Self Compacting Concrete Using the Discrete Models as Binary & Ter...theijes
The effect of using nanosized[4],[5] pozzolanic materials [1], [12], 14] like Fly ash(FA) [3], Metakeolin (MK) [8],Silica fume(SF)[6],Rise husk ash(RHA)[14],Ground granulated blust furnace slag (GGBFS)[2] etc. as partial replacement with dry weight of Ordinary Portland Cement(OPC) to enhance the strength, durability, workability of concrete. The test results of fresh and the hardened properties of Self compacting concrete (SCC)[8],[19] incorporating pozzolanic materials at various percentage by fixing the Water to Binder (i.e. powder)ratio(w/b) of 0.45. The effects of pozzolanic materials properties of SCC were investigated by comparing the test results. Various tests [4],[5],[9] were conducted on fresh SCC like the slump flow, L-box passing ability of the SCC mixtures and T500mm slump flow time were also done. Compressive strength test [9] along with the Initial surface absorption test(ISAT) and the Capillary suction test(CST)[7] were also performed on the hardened SCC[8]
Effect on Concrete by Partial Replacement of Cement by Colloidal Nano Alumina...IJCMESJOURNAL
Nanotechnology is a optimistic field in terms of environmental improvements including energy savings and reduced reliability on non-renewable resources, as well as reduced waste, toxicity and carbon emissions. Alumina component reacts with calcium hydroxide produced from the hydration of calcium silicates. The rate of the pozzolanic reaction is proportional to the amount of surface area available for reaction. Therefore, it is possible to add nano- Alumina of a high purity and a high Blaine fineness value in order to improve the characteristics of cement mortars The Aim of this project is to devlope the nano concrete and to study the effects of nano alumina on the properties of concrete. In this investigation the cement is replaced by 10% Fly-ash and Alumina nanoparticles of different proportion i.e 0.5%, 1%, 1.5%, 2.0%, 2.5% & 3% in M40 grade of concrete. It is observed that workability decreased with replacement of cement. The compressive strength of nano concrete casted by partially replacement of 10% fly ash & 2% & 2.5% colloidal nano alumina , increased over conventional concrete about 18.03%, 14.28% for 3 days and 12.7%, 11.27% for 7 days and 4.17% , 2.07% for 28 days. The Split Tensile strength of this concrete increases with 5.73% and 9.16% respectively over conventional concrete for the replacement 1.5% and 2%. Flexural strength of this concrete increases with 13.05% and 26.65% over conventional concrete for the replacement 2% and 2.5%.
Application Of Nanotechnology In Civil EngineeringGrimGod
Nanotechnology refers to manipulating matter at the nanoscale, around 1 to 100 nanometers. It can be used in various areas of civil engineering like materials, construction, and maintenance. Some applications of nanotechnology in construction include using carbon nanotubes to strengthen concrete and coatings, nano-silica to improve properties of fly ash concrete, and nano-sensors to monitor structures. However, high costs remain a barrier to widespread use of nanotechnology in construction due to small production volumes and lengthy commercialization timelines.
Carbon nano tubes for concrete better constructionsriram1052
The document summarizes a presentation on the compressive strength and microstructure of carbon nanotubes-fly ash cement composites. It discusses adding different amounts of carbon nanotubes (CNTs) to fly ash cement mixtures and testing the density, compressive strength, and microstructure of the resulting composites. Testing included SEM, XRD, TGA, DTA, and EDS analyses. The results showed that adding 0.5-1.0% CNTs increased the density and compressive strength of the fly ash cement composites compared to mixtures without CNTs. Microstructural analysis revealed the CNTs were uniformly dispersed in the cement matrix.
Effect of Nano-Silica and Metakaolin on Properties of Recycled Coarse Aggrega...IRJET Journal
The document discusses a study on the effect of nano-silica and metakaolin on the properties of recycled coarse aggregate concrete. Concrete samples were produced with partial replacement of natural coarse aggregate at levels of 25%, 50%, 75% and 100% with recycled coarse aggregate. Cement was also partially replaced with metakaolin at 10%, 15% and 20% and with nano-silica at 1%, 2% and 3%. Test results showed that compressive strength was highest (29.35% more than normal concrete) when cement was replaced with 15% metakaolin and 2% nano-silica, and coarse aggregate was replaced at 50% with recycled aggregate. The strength characteristics improved significantly at these optimum replacement levels of
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This study investigated the effects of adding nano silica to fly ash concrete. Fly ash was partially replaced with cement at various percentages from 0-80%. Nano silica was then added at 2.5% of the cement weight. Corrosion resistance and flexural strength were evaluated. Test results showed that nano silica fly ash concrete had lower mass loss, smaller cracks, and higher strength compared to plain fly ash concrete. This indicates nano silica improves corrosion resistance and strength even when fly ash replaces cement. The optimal fly ash replacement was found to be 30-40% to maintain strength while nano silica helped compensate for strength loss from fly ash addition.
IRJET- Partial Replacement of Cement with Cenosphere as Pozzolanic Material i...IRJET Journal
This document discusses a study on partially replacing cement with cenosphere as a pozzolanic material in concrete. Cenosphere is a lightweight, hollow sphere made largely of silica and alumina. The study tested concrete mixes with cenosphere replacing cement at percentages of 0%, 5%, 10%, and 15% by mass. Tests on compressive strength and split tensile strength showed that replacing 5% of cement with cenosphere increased compressive strength by 16.5% and split tensile strength by 5.07% at 28 days. The literature review discussed previous studies that examined using cenosphere to produce lightweight concrete and its effects on properties like mechanical resistance, thermal conductivity, and acoustic absorption.
This document discusses applications of carbon nanotubes (CNTs) in mechanical engineering. It begins by defining CNTs and describing their extraordinary mechanical and electrical properties. CNTs can significantly increase the stiffness, strength, and toughness of polymer composites when mixed in at low weight percentages. Some potential applications discussed include using CNTs to reinforce turbine blades for marine currents, develop coatings with improved properties, and incorporate into fuel system components for enhanced conductivity and safety. The document provides examples of research on improving the properties of CNT-copper matrix composites and using CNTs in nano-electro-mechanical systems and actuators. In conclusion, CNTs show promising applications in desalination,
IRJET- A Review: Effect of Carbon Fiber on Different Mixes of ConcreteIRJET Journal
The document reviews research on the effect of adding carbon fibers to concrete mixes. It summarizes several studies that tested how different percentages of carbon fiber content affected the compressive, tensile, and flexural strengths of various concrete grades. The studies found that carbon fibers increased strength properties like compressive strength by up to 2%, flexural strength by up to 45%, and tensile strength by up to 11%. Higher fiber contents of 0.75-1.0% produced the largest improvements in strength, especially at later curing periods of 14-28 days. Carbon fibers improved durability, cracking resistance, and other concrete properties.
Similar to Analyzing the Microstructural Properties of Nanomaterial in OPC by SEM, TEM, XRD and Corrosion Rate by TAFEL Techniques (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.