This is our civil engineering project regarding increasing the strength of concrete which is successfully proved with references and literature reviews
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
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.
Concrete is made up of ingredients like Cement, Fine Aggregate (Sand), Coarse Aggregate, Water and admixtures. Concrete mix design is done to Optimize the requirements of Cement, Sand, Aggregate and Water in order to ensure that concrete parameters in both Plastic Stage (like workability) and in Hardened Stage (like Compressive Strength and durability) are achieved. The Concrete mix design is as per Indian Standards (IS 10262) and might vary from country to country. The nominal mix design ratios available for concrete less than M30 in strength are only thumb rules and are generally over designed. As the actual site conditions vary and the mix design should be adjusted as per the location and other factors.
This document discusses ground granulated blast furnace slag (GGBFS), a byproduct of steel production that can be used in concrete production. It has several benefits over traditional Portland cement concrete including greater strength, durability, and sustainability. GGBFS concrete exhibits improved sulfate and chloride resistance, reduces temperatures in large pours, and results in a lighter colored, smoother finish. It also enhances workability and pumpability while requiring less water. Overall, incorporating GGBFS in concrete delivers higher performance while reducing costs and environmental impact.
Production of Concrete Admixtures (Additives). Construction Chemicals. Admixt...Ajjay Kumar Gupta
Admixtures are artificial or natural materials added to the concrete besides cement, water and aggregate to improve certain property of concrete during casting or setting or service stage.
A material other than water, aggregates, or cement that is used as an ingredient of concrete or mortar to control setting and early hardening, workability, or to provide additional cementing properties.
Admixtures are generally used to alter the properties of concrete (such as increased workability or reduced water content, acceleration or retardation of setting time, acceleration of strength development, and improved resistance to weather and chemical attacks) to make it more suitable for a particular purpose. For example, calcium chloride can be used to accelerate strength development in mass concrete during winter. Air-entraining admixtures (inexpensive soaps, detergents, etc.) entrain air which greatly improves the workability of concrete and thus permits the use of harsher and more poorly graded aggregates and also those of undesirable shapes.
See more
https://goo.gl/mhqB2g
https://goo.gl/nTFSzX
https://goo.gl/JADPgW
Contact us:
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Spark Mall,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886, 8800733955
Mobile: +91-9811043595
Website: www.entrepreneurindia.co , www.niir.org
Tags
Concrete Admixtures, Admixtures for Concrete, Production of Concrete Admixtures, Manufacturing Cost of Production of Concrete Admixtures, Concrete Admixture Manufacture, Concrete Admixtures Production Line, Concrete Admixtures Equipment, Concrete Admixtures Production Plant, Report on Concrete Admixtures Production, Concrete Admixture Production Plant, Concrete Admixture Manufacturing Process in India, Concrete Admixture Formulation, Formulation of Concrete Admixture, Manufacturing Process of Concrete Mixture, Concrete Admixture Manufacture in India, Manufacturing of Concrete Admixture, How to Start Manufacturing Company of Concrete Admixture, Raw Material of Concrete Admixture, Concrete Formulations and Admixtures, Concrete Admixture Formulation and Preparation, Admixtures for Construction Industry, Production Plant of Concrete Admixture, Concrete Admixtures Production project ideas, Projects on Small Scale Industries, Small scale industries projects ideas, Concrete Admixtures Production Based Small Scale Industries Projects, Project profile on small scale industries, How to Start Concrete Admixtures Production Industry in India, Concrete Admixtures Production Projects, New project profile on Concrete Admixtures Production industries, Project Report on Concrete Admixtures Production Industry, Detailed Project Report on Concrete Admixtures Production, Project Report on Concrete Admixtures Production, Pre-Investment Feasibility Study on Concrete Admixtures Production
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.
The document discusses the potential for geopolymer concrete to reduce CO2 emissions from the concrete industry. Geopolymer concrete is made from industrial byproducts like fly ash rather than Portland cement, and can offer benefits like higher strength, fire resistance, and durability while reducing CO2 by up to 90% compared to ordinary Portland cement concrete. The document outlines the production process of geopolymer concrete and its advantages over traditional concrete, as well as opportunities for its future use in infrastructure projects.
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
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.
Concrete is made up of ingredients like Cement, Fine Aggregate (Sand), Coarse Aggregate, Water and admixtures. Concrete mix design is done to Optimize the requirements of Cement, Sand, Aggregate and Water in order to ensure that concrete parameters in both Plastic Stage (like workability) and in Hardened Stage (like Compressive Strength and durability) are achieved. The Concrete mix design is as per Indian Standards (IS 10262) and might vary from country to country. The nominal mix design ratios available for concrete less than M30 in strength are only thumb rules and are generally over designed. As the actual site conditions vary and the mix design should be adjusted as per the location and other factors.
This document discusses ground granulated blast furnace slag (GGBFS), a byproduct of steel production that can be used in concrete production. It has several benefits over traditional Portland cement concrete including greater strength, durability, and sustainability. GGBFS concrete exhibits improved sulfate and chloride resistance, reduces temperatures in large pours, and results in a lighter colored, smoother finish. It also enhances workability and pumpability while requiring less water. Overall, incorporating GGBFS in concrete delivers higher performance while reducing costs and environmental impact.
Production of Concrete Admixtures (Additives). Construction Chemicals. Admixt...Ajjay Kumar Gupta
Admixtures are artificial or natural materials added to the concrete besides cement, water and aggregate to improve certain property of concrete during casting or setting or service stage.
A material other than water, aggregates, or cement that is used as an ingredient of concrete or mortar to control setting and early hardening, workability, or to provide additional cementing properties.
Admixtures are generally used to alter the properties of concrete (such as increased workability or reduced water content, acceleration or retardation of setting time, acceleration of strength development, and improved resistance to weather and chemical attacks) to make it more suitable for a particular purpose. For example, calcium chloride can be used to accelerate strength development in mass concrete during winter. Air-entraining admixtures (inexpensive soaps, detergents, etc.) entrain air which greatly improves the workability of concrete and thus permits the use of harsher and more poorly graded aggregates and also those of undesirable shapes.
See more
https://goo.gl/mhqB2g
https://goo.gl/nTFSzX
https://goo.gl/JADPgW
Contact us:
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Spark Mall,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886, 8800733955
Mobile: +91-9811043595
Website: www.entrepreneurindia.co , www.niir.org
Tags
Concrete Admixtures, Admixtures for Concrete, Production of Concrete Admixtures, Manufacturing Cost of Production of Concrete Admixtures, Concrete Admixture Manufacture, Concrete Admixtures Production Line, Concrete Admixtures Equipment, Concrete Admixtures Production Plant, Report on Concrete Admixtures Production, Concrete Admixture Production Plant, Concrete Admixture Manufacturing Process in India, Concrete Admixture Formulation, Formulation of Concrete Admixture, Manufacturing Process of Concrete Mixture, Concrete Admixture Manufacture in India, Manufacturing of Concrete Admixture, How to Start Manufacturing Company of Concrete Admixture, Raw Material of Concrete Admixture, Concrete Formulations and Admixtures, Concrete Admixture Formulation and Preparation, Admixtures for Construction Industry, Production Plant of Concrete Admixture, Concrete Admixtures Production project ideas, Projects on Small Scale Industries, Small scale industries projects ideas, Concrete Admixtures Production Based Small Scale Industries Projects, Project profile on small scale industries, How to Start Concrete Admixtures Production Industry in India, Concrete Admixtures Production Projects, New project profile on Concrete Admixtures Production industries, Project Report on Concrete Admixtures Production Industry, Detailed Project Report on Concrete Admixtures Production, Project Report on Concrete Admixtures Production, Pre-Investment Feasibility Study on Concrete Admixtures Production
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.
The document discusses the potential for geopolymer concrete to reduce CO2 emissions from the concrete industry. Geopolymer concrete is made from industrial byproducts like fly ash rather than Portland cement, and can offer benefits like higher strength, fire resistance, and durability while reducing CO2 by up to 90% compared to ordinary Portland cement concrete. The document outlines the production process of geopolymer concrete and its advantages over traditional concrete, as well as opportunities for its future use in infrastructure projects.
The document discusses geopolymer concrete as an alternative to traditional Portland cement concrete. It defines geopolymer concrete as a material made through a chemical reaction of aluminosilicate materials like fly ash or slag with an alkaline solution. This reaction forms a three-dimensional polymeric chain and network. In contrast to Portland cement, water is not involved in the chemical reaction and curing of geopolymer concrete. The document outlines the constituents, properties, applications and limitations of geopolymer concrete. It notes the potential for geopolymer concrete to provide environmental benefits over traditional concrete.
This document lists 51 post graduate theses related to construction management from 1996 to 2006. The theses cover topics such as cost estimation, project scheduling, quality control, value engineering, and expert systems. The degrees earned include M.Sc. and Ph.D. The theses were conducted in Iraq and Libya to research and develop management systems for improving construction project delivery.
This document summarizes a seminar presentation on nano concrete. It begins with an introduction to nanotechnology and its applications to concrete. Nano concrete is made with Portland cement particles less than 500nm and can include nano materials like carbon nanotubes, nano-silica, and polycarboxylates. Results showed nano concrete provides higher compressive strengths even with low additive amounts and self-compacting properties with higher amounts. Advantages include higher strengths, workability, durability and reduced additive and cement usage. Disadvantages include limited availability and challenges incorporating nano materials uniformly into concrete. In conclusion, well-dispersed nano particles improve concrete properties like viscosity, segregation resistance, hydration and bonding.
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.
Partial replacement of cement with glass powder and egg shell ash in concreteFresher Thinking
This document summarizes a study on partially replacing cement with glass powder and egg shell ash in concrete. Concrete cubes were made with 0%, 15%, 20%, 25%, and 30% replacement of cement and tested at 7, 14, and 28 days. The testing showed that concrete with 20% replacement achieved higher compressive and split tensile strengths compared to the control mix without replacement. The study aims to increase the strength of concrete while reducing waste and the cost of concrete production.
MIXTURE DESIGN OF FLY ASH & SLAG BASED ALKALI ACTIVATED CONCRETE FOR PRECAST ...IEI GSC
Presentation on MIXTURE DESIGN OF FLY ASH & SLAG BASED ALKALI ACTIVATED CONCRETE FOR PRECAST CONCRETE
made by Daxesh Patel under guidance of Prof Sonal Thakkar at #33NCCE #IEIGSC
Nanotechnology involves manipulating materials at the nanoscale from 1-100 nm to develop new properties. In construction, nanotechnology is being used to improve concrete, steel, glass, and other materials. Concrete is made stronger and more durable using nano-silica and carbon nanotubes. Steel is made tougher and able to withstand higher temperatures through the use of copper nanoparticles. Glass is developed with titanium dioxide coatings to be self-cleaning. Overall, nanotechnology offers advances to improve strength, durability, sustainability and other properties of common construction materials.
Geo-polymer concrete is an alternative to traditional cement concrete that uses fly ash and an alkaline activator instead of cement. It offers benefits like lower CO2 emissions during production, higher compressive strength, and fire resistance. To produce geo-polymer concrete, fly ash is mixed with an alkaline solution and aggregates, and the mixture is cured at 60-90 degrees Celsius to form a hardened cement-like material through a polymerization process. Some applications of geo-polymer concrete include pre-cast construction elements and marine structures due to its strength and acid/salt resistance. While it provides environmental and performance advantages over cement, challenges include the cost of alkaline activators and difficulty of steam curing.
Polymer concrete and fiber reinforced polymer concrete are alternatives to traditional concrete that can reduce drawbacks like greenhouse gas emissions and energy consumption. Polymers can be classified as synthetic, natural, organic or inorganic. Polymer concrete is made by mixing polymers, aggregates, and sometimes cement or other binders. It has properties like high compressive strength, impermeability, chemical resistance, and good adhesion. Fiber reinforced polymer concrete adds fibers like glass or textile to improve flexural strength and ductility. Geopolymer concrete uses industrial byproducts like fly ash and is more eco-friendly than ordinary Portland cement. Both polymer concrete and fiber reinforced polymer concrete have applications in construction where properties like strength, corrosion resistance and durability are
Leaving the waste materials to the environment directly can cause environmental problem. Hence the reuse of waste material has been emphasized. Waste can be used to produce new products or can be used as admixtures so that natural resources are used more efficiently and the environment is protected from waste deposits. Marble stone industry generates both solid waste and stone slurry. Whereas solid waste results from the rejects at the mine sites or at the processing units, stone slurry is a semi liquid substance consisting of particles originating from the sawing and the polishing processes and water used to cool and lubricate the sawing and polishing machines. Stone slurry generated during processing corresponds to around 40% of the final product from stone industry. This is relevant because the stone industry presents an annual output of 68 million tonnes of processed products. Therefore the scientific and industrial community must commit towards more sustainable practices. There are several reuse and recycling solutions for this industrial by-product, both at an experimental phase and in practical applications. These industrial wastes are dumped in the nearby land and the natural fertility of the soil is spoiled. The physical, chemical and mechanical properties of the waste are analyzed.
Design mix method of bitumenous materials by Marshall stability methodAmardeep Singh
4.25
4.5
4.75
5
5.25
5.5
Bitumen %
1) The Marshall stability test is used to determine the optimum asphalt content for a given mix design by evaluating stability, flow, density, voids, and voids filled with asphalt at different asphalt contents.
2) Specimens are compacted in molds and tested at 60°C after being submerged in a water bath for 30-40 minutes.
3) Graphs of stability, density, and voids vs. asphalt content are used to identify the optimum asphalt content, which
1. Concrete repair refers to modifying damaged concrete structures to restore their load-bearing capacity and durability.
2. Common repair techniques include removing damaged concrete and replacing it with new concrete.
3. Shotcreting is a repair method that projects a concrete mixture at high velocity to repair large areas or strengthen structures. It produces a dense, homogeneous material without formwork.
Project report on self compacting concreterajhoney
This project report summarizes research conducted on developing self-compacting concrete using industrial waste. A group of students conducted the research under the guidance of Prof. M. B. Kumthekar to fulfill requirements for a B.E. in Civil Engineering from Shivaji University, Kolhapur. The report documents the need for self-compacting concrete to improve construction efficiency and concrete quality. It describes tests conducted to utilize red mud and foundry waste sand as partial replacements for cement in self-compacting concrete mixtures and analyze the results.
use of fly ash and silica fume as a partial replacement of cement in concreteHIMANSHU KUMAR AGRAHARI
this project was done with help of few members, in this project, we have replaced cement partially with fly ash and silica fumes, and tested the cubes with different mix and at different time of curing period
As A part of my minor project , Me and my Colleagues had worked on how the polypropylene fiber will affect the various properties of concrete viz. Compressive strength, Split Tensile Strength , Workability and so on. So I would I like To share My Work With All Of You and the test result We obtained during the testing Procedure . Thank U.
Sustainable concrete uses less energy and produces fewer carbon emissions than regular concrete. It incorporates waste and recycled materials like fly ash and slag to replace portions of cement. Using these supplementary cementitious materials can increase sustainability by reducing embodied energy and carbon in the concrete. Sustainable strategies also include minimizing water use, using local and recycled aggregates, and designing for durability to lessen environmental impacts over the concrete's lifetime. The presentation outlined various approaches to sustainable concrete and its advantages in promoting greener construction.
Effect of Nano Silica on the Compressive Strength of Concreteijtsrd
Concrete is one of the most important materials in the construction world. In the present scenario, due to the various industrialization, especially in the urban areas, the demand of construction work increases progressively. Due to which there is very high demand of concrete. So, it is very important to improve the durability and properties of concrete. For this there are various admixtures which are partially replaced with the cement like fly ash, slag, silica fumes, rice husk etc. However, in the present situation, Nano technology comes as a very faithful approach for improving the strength and durability of the concrete. In this project, M30 concrete is used and we use Nano silica of size 236nm as a partial replacement in concrete. Nano silica enters into the pores of the concrete and sets early due to which the permeability and strength of concrete are improved. An experimental analysis has been done by replacing the cement with Nano silica by increasing its percentage as 0.5 , 1 , 2 and 3 b.w.c. The results show that with increase in amount of Nano silica, the compressive strength increases up to 3 , however, if amount of Nano silica goes beyond 3 , the compressive strength of concrete starts decreasing. In these experimental tests, there are 10 cubes prepared with the sample and tested at 7 and 28 days. Bhupender | Sunil Kumar | Vikram "Effect of Nano Silica on the Compressive Strength of Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd28090.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/28090/effect-of-nano-silica-on-the-compressive-strength-of-concrete/bhupender
Size Anddosageof Micro Silica Fume Behaviour for Partial Replacement of Cemen...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
The document discusses geopolymer concrete as an alternative to traditional Portland cement concrete. It defines geopolymer concrete as a material made through a chemical reaction of aluminosilicate materials like fly ash or slag with an alkaline solution. This reaction forms a three-dimensional polymeric chain and network. In contrast to Portland cement, water is not involved in the chemical reaction and curing of geopolymer concrete. The document outlines the constituents, properties, applications and limitations of geopolymer concrete. It notes the potential for geopolymer concrete to provide environmental benefits over traditional concrete.
This document lists 51 post graduate theses related to construction management from 1996 to 2006. The theses cover topics such as cost estimation, project scheduling, quality control, value engineering, and expert systems. The degrees earned include M.Sc. and Ph.D. The theses were conducted in Iraq and Libya to research and develop management systems for improving construction project delivery.
This document summarizes a seminar presentation on nano concrete. It begins with an introduction to nanotechnology and its applications to concrete. Nano concrete is made with Portland cement particles less than 500nm and can include nano materials like carbon nanotubes, nano-silica, and polycarboxylates. Results showed nano concrete provides higher compressive strengths even with low additive amounts and self-compacting properties with higher amounts. Advantages include higher strengths, workability, durability and reduced additive and cement usage. Disadvantages include limited availability and challenges incorporating nano materials uniformly into concrete. In conclusion, well-dispersed nano particles improve concrete properties like viscosity, segregation resistance, hydration and bonding.
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.
Partial replacement of cement with glass powder and egg shell ash in concreteFresher Thinking
This document summarizes a study on partially replacing cement with glass powder and egg shell ash in concrete. Concrete cubes were made with 0%, 15%, 20%, 25%, and 30% replacement of cement and tested at 7, 14, and 28 days. The testing showed that concrete with 20% replacement achieved higher compressive and split tensile strengths compared to the control mix without replacement. The study aims to increase the strength of concrete while reducing waste and the cost of concrete production.
MIXTURE DESIGN OF FLY ASH & SLAG BASED ALKALI ACTIVATED CONCRETE FOR PRECAST ...IEI GSC
Presentation on MIXTURE DESIGN OF FLY ASH & SLAG BASED ALKALI ACTIVATED CONCRETE FOR PRECAST CONCRETE
made by Daxesh Patel under guidance of Prof Sonal Thakkar at #33NCCE #IEIGSC
Nanotechnology involves manipulating materials at the nanoscale from 1-100 nm to develop new properties. In construction, nanotechnology is being used to improve concrete, steel, glass, and other materials. Concrete is made stronger and more durable using nano-silica and carbon nanotubes. Steel is made tougher and able to withstand higher temperatures through the use of copper nanoparticles. Glass is developed with titanium dioxide coatings to be self-cleaning. Overall, nanotechnology offers advances to improve strength, durability, sustainability and other properties of common construction materials.
Geo-polymer concrete is an alternative to traditional cement concrete that uses fly ash and an alkaline activator instead of cement. It offers benefits like lower CO2 emissions during production, higher compressive strength, and fire resistance. To produce geo-polymer concrete, fly ash is mixed with an alkaline solution and aggregates, and the mixture is cured at 60-90 degrees Celsius to form a hardened cement-like material through a polymerization process. Some applications of geo-polymer concrete include pre-cast construction elements and marine structures due to its strength and acid/salt resistance. While it provides environmental and performance advantages over cement, challenges include the cost of alkaline activators and difficulty of steam curing.
Polymer concrete and fiber reinforced polymer concrete are alternatives to traditional concrete that can reduce drawbacks like greenhouse gas emissions and energy consumption. Polymers can be classified as synthetic, natural, organic or inorganic. Polymer concrete is made by mixing polymers, aggregates, and sometimes cement or other binders. It has properties like high compressive strength, impermeability, chemical resistance, and good adhesion. Fiber reinforced polymer concrete adds fibers like glass or textile to improve flexural strength and ductility. Geopolymer concrete uses industrial byproducts like fly ash and is more eco-friendly than ordinary Portland cement. Both polymer concrete and fiber reinforced polymer concrete have applications in construction where properties like strength, corrosion resistance and durability are
Leaving the waste materials to the environment directly can cause environmental problem. Hence the reuse of waste material has been emphasized. Waste can be used to produce new products or can be used as admixtures so that natural resources are used more efficiently and the environment is protected from waste deposits. Marble stone industry generates both solid waste and stone slurry. Whereas solid waste results from the rejects at the mine sites or at the processing units, stone slurry is a semi liquid substance consisting of particles originating from the sawing and the polishing processes and water used to cool and lubricate the sawing and polishing machines. Stone slurry generated during processing corresponds to around 40% of the final product from stone industry. This is relevant because the stone industry presents an annual output of 68 million tonnes of processed products. Therefore the scientific and industrial community must commit towards more sustainable practices. There are several reuse and recycling solutions for this industrial by-product, both at an experimental phase and in practical applications. These industrial wastes are dumped in the nearby land and the natural fertility of the soil is spoiled. The physical, chemical and mechanical properties of the waste are analyzed.
Design mix method of bitumenous materials by Marshall stability methodAmardeep Singh
4.25
4.5
4.75
5
5.25
5.5
Bitumen %
1) The Marshall stability test is used to determine the optimum asphalt content for a given mix design by evaluating stability, flow, density, voids, and voids filled with asphalt at different asphalt contents.
2) Specimens are compacted in molds and tested at 60°C after being submerged in a water bath for 30-40 minutes.
3) Graphs of stability, density, and voids vs. asphalt content are used to identify the optimum asphalt content, which
1. Concrete repair refers to modifying damaged concrete structures to restore their load-bearing capacity and durability.
2. Common repair techniques include removing damaged concrete and replacing it with new concrete.
3. Shotcreting is a repair method that projects a concrete mixture at high velocity to repair large areas or strengthen structures. It produces a dense, homogeneous material without formwork.
Project report on self compacting concreterajhoney
This project report summarizes research conducted on developing self-compacting concrete using industrial waste. A group of students conducted the research under the guidance of Prof. M. B. Kumthekar to fulfill requirements for a B.E. in Civil Engineering from Shivaji University, Kolhapur. The report documents the need for self-compacting concrete to improve construction efficiency and concrete quality. It describes tests conducted to utilize red mud and foundry waste sand as partial replacements for cement in self-compacting concrete mixtures and analyze the results.
use of fly ash and silica fume as a partial replacement of cement in concreteHIMANSHU KUMAR AGRAHARI
this project was done with help of few members, in this project, we have replaced cement partially with fly ash and silica fumes, and tested the cubes with different mix and at different time of curing period
As A part of my minor project , Me and my Colleagues had worked on how the polypropylene fiber will affect the various properties of concrete viz. Compressive strength, Split Tensile Strength , Workability and so on. So I would I like To share My Work With All Of You and the test result We obtained during the testing Procedure . Thank U.
Sustainable concrete uses less energy and produces fewer carbon emissions than regular concrete. It incorporates waste and recycled materials like fly ash and slag to replace portions of cement. Using these supplementary cementitious materials can increase sustainability by reducing embodied energy and carbon in the concrete. Sustainable strategies also include minimizing water use, using local and recycled aggregates, and designing for durability to lessen environmental impacts over the concrete's lifetime. The presentation outlined various approaches to sustainable concrete and its advantages in promoting greener construction.
Effect of Nano Silica on the Compressive Strength of Concreteijtsrd
Concrete is one of the most important materials in the construction world. In the present scenario, due to the various industrialization, especially in the urban areas, the demand of construction work increases progressively. Due to which there is very high demand of concrete. So, it is very important to improve the durability and properties of concrete. For this there are various admixtures which are partially replaced with the cement like fly ash, slag, silica fumes, rice husk etc. However, in the present situation, Nano technology comes as a very faithful approach for improving the strength and durability of the concrete. In this project, M30 concrete is used and we use Nano silica of size 236nm as a partial replacement in concrete. Nano silica enters into the pores of the concrete and sets early due to which the permeability and strength of concrete are improved. An experimental analysis has been done by replacing the cement with Nano silica by increasing its percentage as 0.5 , 1 , 2 and 3 b.w.c. The results show that with increase in amount of Nano silica, the compressive strength increases up to 3 , however, if amount of Nano silica goes beyond 3 , the compressive strength of concrete starts decreasing. In these experimental tests, there are 10 cubes prepared with the sample and tested at 7 and 28 days. Bhupender | Sunil Kumar | Vikram "Effect of Nano Silica on the Compressive Strength of Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd28090.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/28090/effect-of-nano-silica-on-the-compressive-strength-of-concrete/bhupender
Size Anddosageof Micro Silica Fume Behaviour for Partial Replacement of Cemen...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
The document discusses the effects of micro silica particle size and dosage on the compressive strength of concrete. 240 concrete cube specimens were made with micro silica particle sizes of 20, 45, 90, 125, and 250 microns and replacement levels of cement of 10%, 20%, 30%, and 40%. Testing found that compressive strength increased as particle size decreased and was highest for 20 micron particle size and 20% cement replacement. The optimum strength was 42% higher than the control mix at 28 days. Smaller particle size provides a greater surface area and allows better accommodation in the cement porous structure.
Experimental Study on Partial Replacement of Cement with Nano Silica in ConcreteIRJET Journal
The document presents the results of an experimental study that investigated the effects of partially replacing cement with nano silica in concrete. Specifically:
- Concrete mixtures with 0%, 0.5%, 1%, 1.5%, 2%, 2.5%, and 3% nano silica replacement of cement by weight were tested.
- Compressive strength and split tensile strength were found to increase up to 2.5% nano silica replacement, with maximum strengths of 38.65 MPa and 4.35 MPa achieved at 28 days, respectively.
- Workability was also found to increase up to 2.5% replacement before decreasing, indicating an optimal dosage.
- The study concluded nano sil
IRJET- Review on Strengthening Proportions of Nanosilica and Silica Fume in C...IRJET Journal
This document reviews the use of nanosilica and silica fume to strengthen concrete proportions. It discusses how partial replacement of cement with nanosilica and silica fume can increase the compressive strength and reduce permeability of concrete. The document summarizes several studies that found maximum strength is achieved when nanosilica content is 1-3% and silica fume content is 15-30% of cement replacement. It concludes that nanosilica combined with cement provides considerable improvements to concrete properties but the influence of silica fume decreases at replacement levels over 30% of cement.
An experimental investigation on strength properties of concrete containing m...IAEME Publication
This document presents an experimental investigation on the strength properties of concrete containing micro-silica and nano-silica. Cement in M40 and M50 grade concrete was partially replaced with 5% and 10% micro-silica, and 1.5% and 3% nano-silica. The compressive strength, split tensile strength, and flexural strength of the concrete mixtures were tested and compared to a controlled concrete. Test results indicated that concrete with 10% micro-silica and 1.5% nano-silica replacement exhibited improved strength properties over the controlled concrete. The increased strengths are attributed to better particle packing and additional binding from the pozzolanic additions of micro and nano-silica.
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.
IRJET- Nano Technology in Concrete- A Brief ReviewIRJET Journal
This document reviews the use of nanotechnology in concrete. It discusses how nanoparticles like nano silica, nano titanium dioxide, and nano iron oxide can be used as partial replacements for cement in concrete mixes. Studies have found that these nanomaterials can improve properties of concrete like compressive strength, durability, and resistance to chemical attacks like sulfate and acid. However, workability of concrete decreases with the addition of nanomaterials. The optimal dosages found in studies are around 1-2% replacement of cement by weight. While nanomaterials enhance concrete properties, more research is still needed, especially on higher strength grades and additional nanomaterial types.
IRJET- Experimental Investigation on Behaviour of Nano Silica in ConcreteIRJET Journal
The document describes an experimental investigation on the behavior of nano silica in concrete. Nano silica was used as a partial replacement for cement in M60 grade concrete in proportions of 0%, 5%, 10%, 15%, 20%, and 25%. The effect on the workability and mechanical properties (compressive strength, split tensile strength, and flexural strength) of fresh and hardened concrete was studied. The results were compared to normal concrete without nano silica. The objectives were to study the use of nano silica to reduce cement content and improve the properties and performance of high strength concrete.
IRJET- Experimental Study on Split Tensile Strength of Nano Silica ConcreteIRJET Journal
This document reports on an experimental study that investigated the effect of nano silica on the split tensile strength of concrete. Concrete samples were produced by replacing 0-3% of cement with nano silica. Testing found that split tensile strength increased up to 3% nano silica replacement, with the highest strength achieved with 3% replacement. Workability also increased up to 2.5% replacement before decreasing. The study concluded that nano silica improves split tensile strength by altering the microstructure of concrete and that maximum strength is achieved with 3% cement replacement by nano silica.
IRJET- Experimental Study on Compressive Strength of Nano Silica ConcreteIRJET Journal
The document presents an experimental study on the compressive strength of nano silica concrete. Concrete cubes were made by replacing 0%, 0.5%, 1%, 1.5%, 2%, 2.5%, and 3% of cement with nano silica. Testing found that compressive strength increased with higher nano silica content up to 3%, with the highest strength achieved with 3% replacement. Replacement of 3% of cement with nano silica resulted in compressive strengths of 19.43MPa, 25.54MPa and 30.65MPa at 7, 14, and 28 days of curing respectively. The study concluded that nano silica improves the compressive strength of concrete in a replacement level-dependent manner
Hence, it can be concluded concrete prepared with 3% NS and 6%
SF combination can be recommended for the structural applications. The increase in the strength
properties of concrete is due to the availability of additional binder in the presence of NS and SF.
The improved durability property of concrete is due to proper packing of NS and SF particles results
in reduction in voids and leading to dense concrete.
Applications and Effects of Silica Fume and Nano Silica on the Compressive St...ijtsrd
The application of nanotechnology in concrete adds new content to efforts to improve its performance. Due to the very small size of nanomaterials, the properties of concrete can be influenced by changing the microstructure. The study involved the use of 215 nm nano silica to increase the compressive strength of concrete. Experimental studies were performed at 0.4 , 0.7 and 1 of BC. These tests have greatly improved the strength of the early pressure and the overall pressure strength of the concrete. As the percentage of nano silica increases, an increase in strength is observed. Concrete is the material of present and future. Its widespread use in structures, from buildings to factories, bridges and airports, makes it one of the most searched materials in the 21st century. Due to rapid population explosion and the rise of technology to meet these needs, there is an urgent need to improve the strength and durability of concrete. Among the various materials used in concrete production, cement plays an important role due to its size and adhesive properties. Therefore, for the production of improved concrete, the cement humidification mechanism should be studied properly and better alternatives should be proposed. Current research is the design of M40 M30 quality of concrete. The mixtures developed to obtain more rheological properties and solid properties were studied. In this study, the cement is replaced by silica smoke and nano silica materials. In addition, it is planned to determine the number of predictions of cubes in the program. The current design of the probe is the strength of M40 and M30 quality of concrete. This thesis explore the standard optimization ratio for silica and fume to get the best compressive strength. Further this has to check for Indian standard uses for developing the demand of quality users in India. Finally this research lead us to create the console for evaluating the strength of concrete. Syed Basharat Andrabi | Er. Jagdeep Singh ""Applications and Effects of Silica Fume and Nano Silica on the Compressive Strength of Concrete"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25069.pdf
Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/25069/applications-and-effects-of-silica-fume-and-nano-silica-on-the-compressive-strength-of-concrete/syed-basharat-andrabi
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%.
IRJET- Experimental Investigation on Nano Concrete with Nano Silica and M-SandIRJET Journal
This document describes an experimental investigation on the use of nano silica and manufactured sand (M-sand) in concrete. Researchers partially replaced cement with nano silica at percentages of 3%, 3.5%, and 10% for an M20 concrete mix. Tests were conducted to determine the compressive, tensile, and flexural strengths of the nano silica concrete mixes at ages of 7, 14, and 28 days. Results showed that nano silica was able to increase compressive strength up to a point, but higher replacements over 3% resulted in reduced properties. The 3% nano silica mix produced the highest strength and lowest permeability. Overall, the addition of nano silica and use of M-sand improved the performance
Experimental Study on Various Strength of High Performance Concrete by using ...IRJET Journal
This document presents an experimental study on the effects of using metakaolin and nano-silica on the strength properties of high performance concrete. Concrete cubes, cylinders, and beams were cast with various mix proportions replacing 0-30% of cement with metakaolin and 1.5-4.5% with nano-silica. The specimens were tested after 7 and 28 days of curing to determine their compressive, tensile, and flexural strengths. The results showed that partial replacements of cement with metakaolin and nano-silica can improve the strength characteristics of concrete.
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.
Experimental Study of Mechanical Properties of Concrete using Recycled Aggre...IRJET Journal
This study experimentally analyzed the mechanical properties of concrete with recycled aggregates and nano silica. Natural coarse aggregates were replaced with recycled aggregates at levels from 0-50% and cement was replaced with nano silica at levels from 0-4%. Tests found that compressive, tensile, and flexural strengths generally decreased as recycled aggregate and nano silica levels increased. The optimum mix was 40% recycled aggregates with 3% nano silica, achieving strengths close to the control mix but with reduced natural resource usage. In conclusion, recycled aggregates and nano silica can be used to improve the sustainability of concrete, though strengths are slightly reduced.
Some Studies on Strength Properties of Tetra Blended Concrete with Partial Re...IRJET Journal
This document presents the results of a study on the strength properties of concrete with partial cement replacement using various pozzolanic materials and micro Al2O3 powder. Cement in the concrete mixes was replaced with slag, silica fume, pulverized quartz powder, and micro Al2O3 powder individually and in combinations. The compressive strength, split tensile strength, and flexural strength of the concrete mixes were tested at 7 and 28 days. It was found that the tetra blended concrete mix with 16% replacement of cement with pozzolanic materials (slag, silica fume, pulverized quartz powder) and 1% micro Al2O3 powder yielded the highest compressive strength
The Mechanical Properties of Concrete Incorporating Silica Fume as Partial Re...HARISH B A
Concrete is the most important engineering
material and the addition of some other materials may change
the properties of concrete. With increase in trend towards the
wider use of concrete for prestressed concrete and high rise
buildings there is a growing demand of concrete with higher
compressive strength. Mineral additions which are also
known as mineral admixtures have been used with cements
for many years. Silica fume particles are 100 times smaller
than the average cement particle. Its handling and disposal is
a point of concern because of the environment concerns. Silica
fume is usually categorized as a supplementary cementitious
material. These materials exhibit pozzolanic properties,
cementitious properties and a combination of both properties.
Due to these properties, it can affect the concrete behavior in
many ways. In the present work, an attempt has been made to
use silica fume as a supplementary material for cement and to
evaluate the limit of replacement of cement for M20 grade
concrete. The main aim of this work is to study the
mechanical properties of M20 grade control concrete and
silica fume concrete with different percentages (5, 10, 15 and
20%) of silica fume as a partial replacement of cement.
Similar to experimental study on concrete using micro silica and nano silica (20)
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IEEE Slovenia GRSS
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11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...
experimental study on concrete using micro silica and nano silica
1. EXPERIMENTAL STUDY ON
CONCRETE USING MICRO
SILICA AND NANO SILICA
Guided by
Ms.Rajasundari.R.Y
Prepared By
S.Manju
V.Muthu Selvi
J.Armstra Junoly
2. Introduction
In the present era very vast development occurred in the field of
construction specially in concrete technology.
Concrete is the most versatile material due to its continuous
demand. Engineers are continuously pushing the limits to improve
the performance with the help of supplementary cementitious
material like blast furnace slag, Fly ash, steel slag, silica fume etc.
The present research work focused on one of such product . In this,
we will study the effect of MS and NS in the concrete properties
with their different percentages.
Nano technology is most promising area of science.
Nano silica and micro silica particles sizes are very very small so
they can fill the pores or small spaces of concrete easily and
effectively.
3. Aim
To study the mechanical properties of
concrete using micro silica and nano silica as a
partial replacement of cement to increase
strength.
4. Objective
To study the compressive and split tensile strength
of concrete.
To study the properties of concrete.
To study the performance of concrete by
replacing the cement using micro silica and
nanosilica partially.
To study the cost effectiveness of concrete.
7. S.No Author Title Year Result
1 PingDuan,Chunje
Yan, Wei Zhou
Compressive strength and
microstructure of fly ash
based geopolymer blended
with silica fume under
thermal cycle
2016 The partial replacement
of fly ash by 10%, 20%
and 30% of silica fume
increases the compressive
strength over the
reference sample by
8.7%, 26.6% and 50.2%
respectively. Compressive
strength of geopolymer
increases with increasing
content of silica fume
8. S.No Author Title Year Result
2 A.Ranjani,
K.Keerthana,
N.K.Amudhavalli
Study on effect of micro
silica and nano silica in
polyester fibre reinforced
concrete
2016 This study is mainly
concentrated on the
mechanical
characteristics of FRC
with partial
replacement of cement
by micro silica (2%, 4%,
6%, 8 % and 10%) and
nano silica (0.5%, 1.5%,
1%, 2%, and 2.5%). the
compressive strength is
higher in the above
three cases, addition of
polyester fibre to the
combination increases
the compressive, split
tensile and flexural
strength upto 13.05%,
19.74%and 17.85%
respectively.
9. S.No Author Title Year Result
3 P.Janani,
S.Ganeshkumar,
M.Harihananth
Mechanical Properties of
Nano Silica Concrete
2016 The compressive strength
of using 23% replacement
of nano silica to cement
increases 32.69%
compared to conventional
mix, the tensile strength
of using 23% replacement
of nano silica to cement
increases 24.6% compared
to conventional mix, and
the flexural strength of
using 23% replacement of
nano silica to cement
increases 22% compared
to conventional mix.
10. S.No Author Title Year Result
4 Thushara
Priyadarshana ,
Ranjith
Dissanayake and
Priyan Mendis
Effects of Nano Silica,
Micro Silica, Fly Ash and
Bottom Ash on
Compressive Strength
of Concrete
2015 Test results obtained in
this study indicate that up
to 5% nano silica, 10%
micro silica, 20~30% fly
ash and 5% bottom ash
could be advantageously
blended with cement
without adversely affecting
the strength. optimum
levels of these materials
are 1~3% nano silica, 3~8%
of micro silica, 10% fly ash
and 5% bottom ash in the
compressive strengths of
Grade-35 concrete mix.
11. S.No Author Title Year Result
5 Mohamed Amin ,
Khaled Abu el-
hassan
Effect of using
different types of
nano materials on
mechanical properties
of high strength
concrete
2014 The optimum dose of
nano-silica is 3% by weight
and the optimum dose of
Ni ferrite and Cu-Zn ferrite
was 2% by weight. The
compressive strength of
concrete when nano silica
and nano ferrite was
added reaches 21% and
17%
12. S.No Author Title Year Result
6 M.Iyappan Properties of High
strength self compact
concrete with addition
of NS
2014 The addition of nano silica
is 0, 5 & 10 %. The
maximum increase in
compressive strength with
nanosilica was at 10% both
on 7th And 28th days. On
7th day at 10% the
strength was 38.7 MPa and
28th day it was 58.5 MPa.
Flexural strength of
concrete with the
replacement of cement
with nano silica in varying
percentage of 0, 5 & 10%
respectively. The maximum
strength was obtained
with 10% addition of NS.
After 7 day at 10% the
strength was 6.9 MPa & at
28th day it was 8.3 MPa.
13. S.No Author Title Year Result
7 S.Subbu raj Experimental study on
concrete by using
nano silica
2014 In the present study
strength properties such as
compressive strength, split
tensile strength and
flexural strength of M20
grade of concrete with the
use of nano silica (2%, 4%,
6%, 8%, 10%) as partial
replacement of cement
were studied. The
optimum strength was
attained when 6% of nano
silica was added to the
concrete with the
compressive strength of
35.64MPa at 28 days and it
leads to increase in 30% of
compression strength
11.7% of tensile strength
and 13% of flexural
strength.
14. S.No Author Title Year Result
8 S.Tanveen hussian study on strength
properties of concrete
using Micro silica and
nano silica
2013 Mix design of M40 and
M50 grades of concrete
with the use of micro
silica (5%, 7.5%, 10%,
15%) and nano silica (1%,
1.5%, 2%, 2.5%) as partial
replacement of cement
were studied. Optimum
strength were obtain in
7.5%of micro silica and
2% nano silica optimum
strength were 62.35MPa
and 71.5MPa for M40
and M50 grades
respectively .Further
addition of micro silica
and nano silica leads to
decrease in compression
strength.
15. S.No Author Title Year Result
9 Sakshi Gupta Application of silica
fume and nanosilica in
cement and concrete
2013 Limited work is done on use
of nano-silica and micro silica
in paste, mortar and concrete
and whatever work is
available is highly
contradictory about their
influence on mechanical
strength development and
durability properties. , the
simultaneous and also
separate optimal use of
micro-silica and nano-silica
will create a new concrete
mixture that will result in long
lasting concrete structures in
the future
16. S.No Author Title Year Result
10 M.Nilia
A.Ehsania
Influence of Nano-
SiO2 and Micro
silica on Concrete
Performance
2013 . It was concluded that 6%
micro silica and 1.5%
nanosilica as partial
replacements of cement,
improved compressive
strength and electrical
resistance and also
diminished capillary
absorption of the concrete
specimens seriously. The
optimum compression
strength was found as
64MPa at 28 days and
48MPa at 7 days.
18. Microsilica
Silica fume, also known as microsilica . It is an amorphous (non-
crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder
collected as a by-product of the silicon and ferrosilicon alloy production
and consists of spherical particles with an average particle diameter of 150 nm.
The main field of application is as pozzolanic material for high performance
concrete.
Silicon dioxide, also known as nanosilica. It is a chemical compound that
is an oxide of silicon. It has been known since ancient times. Silica is most commonly
found in nature as quartz, as well as in various living organisms. In many parts of the
world, silica is the major constituent of sand. Silica is one of the most complex and
most abundant families of materials, existing both as several minerals and being
produced synthetically.
Nanosilica
19. Mix Ratio
• We use M20 grade
• Ratio is 1:1.5:3
• The factor of safety is taken between 1.54-1.57
• For 1 cube materials required
– Cement =1.473kg
– Sand =2.21 kg
– Aggregate=4.418kg
– Microsilica
• For 5.5% =0.2475 kg
• 6% =0.27 kg
• 7.5% =0.3375 kg
– Nanosilica
• For 1% =0.09 kg
• 1.5% =0.0675kg
• 2% =0.045 kg
22. Test on aggregate
• Crushing test
• Abrasion test
• Impact test
• Soundness test
• Shape test
• Specific gravity and water absorption test
23. Crushing test
• Aggregate crushing value = (W1/W2)*100
• A value less than 10 signifies an
exceptionally strong aggregate
• We obtain crushing value as 9.5
24. Impact test
• Aggregate impact value = (W1/W2)*100
• Aggregates to be used for wearing course,
the impact value shouldn’t exceed 30
percent.
• We got result as 23%
25. Specific Gravity of Aggregate
• Specific gravity of aggregate
= (W2- W1)/[(W2- W1)-(W3-W4)]
Specific gravity of aggregate =2.78
• The specific gravity of aggregates normally used in road
construction ranges from about 2.5 to 2.9
Water Absorption
•The difference between the apparent and bulk specific gravities
is nothing but the water permeable voids of the aggregates.
•Water Absorption = (MW/MD)*100
•Water absorption values ranges from 0.1 to about 2.0 percent
for aggregates normally used in road surfacing.
•Water absorption =1.6%
26. Lab Test On Cement
1. Fineness
2. Consistency
The viscosity of which will be such that the Vicat’s
plunger penetrates up to a point 5 to 7 mm from the bottom of
the Vicat’s mould.
3. Initial and final setting time of cement
27. Test On Cement(specific gravity)
SI.No Description Trial No.1 Trial No.2 Trial No.3
1 Weight of empty bottle
(W1) gm
68 68 68
2 Weight of bottle +
cement (W2) gm
178 170 180
3 Weight of bottle +
kerosene + cement(W3)
gm
240 230 248
4 Weight of bottle +
kerosene (W4) gm
168 168 168
5 Specific gravity of
cement
2.89 2.9 3.5
28. Test Results
• Specific gravity of cement
= (W2- W1)/[(W2- W1)-(W3-W4)].
• Specific gravity of kerosene=0.8
• Specific gravity of cement =3.15
29. Specific Gravity of Sand
• Dry weight of pycnometer W1 =0.620kg.
• Wt. of pycnometer +sand W2 =0.874kg.
• Wt. of pycnometer +sand +water W3
=1.592kg.
• Wt. of pycnometer +water W4 =1.448kg.
Specific gravity of sand
= (W2- W1)/[(W2- W1)-(W3-W4)].
Specific gravity of sand=2.3
30. Slump value of concrete using
microsilica and nanosilica
SI.No Specimen Slump value(mm)
1. Cc 35
2. M1 38
3. M2 43
4. M3 52
5. M4 60
31. Test on concrete
• Compression test
A compression test is any test in which a material
experiences opposing forces that push inward upon the
specimen from opposite sides or is otherwise compressed,
“squashed”, crushed, or flattened.
• Split tensile test
Splitting tensile strength test on concrete cylinder is a
method to determine the tensile strength of concrete.
The concrete is very weak in tension due to its brittle nature
and is not expected to resist the direct tension. The concrete
develops cracks when subjected to tensile forces. Thus, it is
necessary to determine the tensile strength of concrete
to determine the load at which the concrete members may
crack.
32. Name of mix
Compression value
N/mm2
Split tensile
value
N/mm2
7th day 28th day 28th day
Cc 12.42 19.11 1.84
M1 12.92 20 1.74
M2 13.23 20.33 2.26
M3 15.29 23.52 2.69
M4 12.7 19.55 1.87
33. Properties of sand
Property Fine aggregate
• Specific gravity 2.652
• Water absorption 0.50 %
• Fineness modulus 2.44
• Bulk density 1550 kg/m3
• Source River bed
Properties of Portland Cement (OPC).
Descriptions OPC
•Fineness (cm2/gm) 3350
•Normal Consistency (%) 313
•Initial Setting Time (minutes) 55
•Final Setting Time (minutes) 100
• Specific gravity 3.159
34. Properties of superplasticisers
• Chemical base Carbolic acid ester (CAE)
• Density 1130 kg/m3
• Colour Colourless Nature Free flowing liquid
• Recommended dosage for
Portland cement 0.1 – 1.0 kg/100 kg
• Solid content 40%Chloride
• Content Nil
• pH 7.2
Specifications of Silica Fume
• SiO2 content >90%
• Particle Size 100 times finer than cement
• Colour Whitish
• Specific Gravity 2.2
• Bulk density 540 kg/m
• Surface area 20,000 m2/kg
• Average diameter about 0.1 mm
• pH 6.7
• Crystallinity Essentially amorphous (XRD)
35. Properties of nano-Silica Solution (nSS)
• Properties Value
• SiO2 100%min
• Nature Amorphous
• Form Colloidal transparent solution
• Density (liquid) 1.1
• nS solid content
in the solution 30%
• Sizes of nS solid particles
in nSS solution 30%
• Active Nano Content 30- 32%
• Particle Size 5- 40 nm
• pH 9- 10.0
• Specific Gravity 1.20
36. Application of silica fume
• Because of its extreme fineness and high silica content, silica
fume is a very effective pozzolanic material. Standard
specifications for silica fume used in cementations mixtures are
ASTM C1240, EN 13263.
• Reduces the permeability of concrete to chloride ions, which
protects the reinforcing steel of concrete from corrosion,
especially in chloride-rich environments such as coastal regions
and those of humid continental roadways and runways (because
of the use of dicing salts) and saltwater bridges.
• In particular high-performance concrete.Effects of silica fume on
different properties of fresh and hardened concrete include
• Silica fume also blocks the pores in the fresh concrete so water
within the concrete is not allowed to come to the surface
37. Application of Nano silica
• Nano silica is applied in HPC and SCC concrete mainly as an anti bleeding
agent
• Increase cohesiveness of concrete and segregation tendency
• Used as additive in eco-concrete mixture
• Also, some explorative applications of nS in high performance well
cementing slurries
• specialized mortars for rock-matching grouting and gypsum particleboard
can be found, but nS is not used in practice yet. The application of these
concretes can be anywhere, both in infrastructure and in buildings.
• It is also added to increase the cohesiveness of concrete and to reduce the
segregation tendency.
• One of the problems of these mixtures is their low compressive strength
and long setting period. This disadvantage is solved by adding nS to eco-
concrete mixes to obtain an accelerated setting and higher compressive
strength
• applied particulate nS in oil well
39. Compressive strength of concrete
using SF & NS at 7 & 28 days
0
5
10
15
20
25
CC M1 M2 M3 M4
Compressivestrength(N/mm2)
Description of mix
7 day
28 day
40. Split tensile strength of concrete
using SF & NS at 28 days
0
0.5
1
1.5
2
2.5
3
CC M1 M2 M3 M4
Splittensilestress(N/mm2)
Description of Mix
28 day
41. CONCLUSION
• Test results obtained in this study indicate that up to 1% nano silica and
7.5% micro silica, could be advantageously blended with cement without
adversely affecting the strength. However, optimum levels of these
materials are 1~3% nano silica, 3~8% of micro silica in concrete mixes.
• Based on experimental results, following conclusion are drawn. It was
found that the maximum compressive strength achieved is 23.52 N/mm2
at 7.5% of silica fume and 1% of nanosilica replacement combination. So
this strength is greater than the control mix and those achieved for
concrete mix name of CC, M1, M2, M3 and M4 is 23 N/mm2,20
N/mm2,20.33 N/mm2,23.52 N/mm2 ,19.55 N/mm2 respectively as compare
to strength of plain cement concrete for 28 days .
• The optimum split tension strength was obtained at 7.5% of silica fume
and 1% of nanosilica in the replacement of cement as 2.69 N/mm2 which
ismuch greater than the control mix and those achieved for concrete mix
name as CM, M1, M2, M3 and M4 is 1.84 N/mm2, 1.74 N/mm2, 2.26
N/mm2, 2.69 N/mm2, 1.83 N/mm2 respectively as compare to strength of
plain cement concrete for 28 days.
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