One of the obstacles with concrete constructions, in case of horizontal slabs, is the high weight, which limits the span.
For this reason major developments of reinforced concrete have focused on enhancing the span.
In U Boot Technology, slabs are created with large span and makes floors thinner by reducing the weight while maintaining the performance of reinforced concrete slabs.
This document discusses U-boot beton technology, which uses a recycled polypropylene framework to create lightened foundations and slabs. It can be used when soil capacity is low. The framework consists of different connecting parts and comes in sizes of 53x53cm. Polypropylene is durable, flexible, and light. U-boot beton allows for large spans over 25m with reduced slab thickness and less concrete and steel usage. It has applications in car parks, hospitals, and raft foundations. The technology is certified but not widely used in India due to lack of awareness.
The document discusses U-Boot Beton technology, which uses recycled polypropylene formwork to create lighter voided slabs and raft foundations in reinforced concrete structures. U-Boot Beton is a box-like formwork that can be used to construct two-way slabs, large span slabs, and mushroom slabs. It reduces the amount of concrete and steel needed and makes construction faster and easier. The technology is suitable for buildings like high-rises, hospitals, and parking structures.
The document discusses U-Boot Beton technology, which is a recycled polypropylene formwork used to create two-way voided slabs and raft foundations. U-Boot Beton consists of interconnected U-shaped elements that are installed to form voids in concrete slabs, providing strength and reduced weight. The document describes the parts of U-Boot Beton including spacers, connection bridges, and closing plates used during installation. It also discusses single and double U-Boot Beton elements and provides tables of specifications for different sizes.
This presentation discusses U-Boot Beton technology, which uses recycled polypropylene formwork for construction. It allows for lighter and more economical building designs through large span slabs and foundations. The key components of U-Boot Beton include spacer joints, connection bridges, and closing plates. Installation involves placing reinforcement, then setting up the interconnected U-Boot formwork before pouring concrete. U-Boot Beton provides benefits like reduced material costs, increased seismic resistance, and more flexible architectural designs. It has various applications in buildings like hospitals, parking structures, and hotels.
Advanced technology to reduce some amount of steel and concrete in the construction field.The application of U-Boot technology is to increase the number of floors. It is quick and easy to implement. This technology is very prospective in modern construction and perhaps future of civil engineering belongs to this new kind of hollow slab.
U-Boot Beton is a recycled polypropylene formwork used to create lightweight concrete slabs and rafts with large spans. It comes in various heights from 10-28 cm and dimensions of 52x52 cm. U-Boot Beton is used in applications like hospitals, parking structures, and raft foundations. It offers advantages like increased floors in buildings, large spans with thin slabs, reduced foundations, and improved acoustics. The formwork is installed by positioning U-Boot Beton units with spacers, adding rebar, and casting concrete in phases.
This document summarizes recent construction technologies presented by Chandana Yadav. It discusses technologies like robot swarm construction using drones, carbon nanotubes to strengthen materials, self-healing concrete using capsules of healing agents, permeable plastic roads that allow water drainage, aerogel as an ultra-light insulating material, drones for advanced mapping, 3D printing for construction elements and structures, using recycled plastic to build durable roads, and holographic computers to view 3D designs overlaid on the physical world. The technologies aim to make construction faster, more sustainable and durable using innovative materials, automation, and information technologies.
One of the obstacles with concrete constructions, in case of horizontal slabs, is the high weight, which limits the span.
For this reason major developments of reinforced concrete have focused on enhancing the span.
In U Boot Technology, slabs are created with large span and makes floors thinner by reducing the weight while maintaining the performance of reinforced concrete slabs.
This document discusses U-boot beton technology, which uses a recycled polypropylene framework to create lightened foundations and slabs. It can be used when soil capacity is low. The framework consists of different connecting parts and comes in sizes of 53x53cm. Polypropylene is durable, flexible, and light. U-boot beton allows for large spans over 25m with reduced slab thickness and less concrete and steel usage. It has applications in car parks, hospitals, and raft foundations. The technology is certified but not widely used in India due to lack of awareness.
The document discusses U-Boot Beton technology, which uses recycled polypropylene formwork to create lighter voided slabs and raft foundations in reinforced concrete structures. U-Boot Beton is a box-like formwork that can be used to construct two-way slabs, large span slabs, and mushroom slabs. It reduces the amount of concrete and steel needed and makes construction faster and easier. The technology is suitable for buildings like high-rises, hospitals, and parking structures.
The document discusses U-Boot Beton technology, which is a recycled polypropylene formwork used to create two-way voided slabs and raft foundations. U-Boot Beton consists of interconnected U-shaped elements that are installed to form voids in concrete slabs, providing strength and reduced weight. The document describes the parts of U-Boot Beton including spacers, connection bridges, and closing plates used during installation. It also discusses single and double U-Boot Beton elements and provides tables of specifications for different sizes.
This presentation discusses U-Boot Beton technology, which uses recycled polypropylene formwork for construction. It allows for lighter and more economical building designs through large span slabs and foundations. The key components of U-Boot Beton include spacer joints, connection bridges, and closing plates. Installation involves placing reinforcement, then setting up the interconnected U-Boot formwork before pouring concrete. U-Boot Beton provides benefits like reduced material costs, increased seismic resistance, and more flexible architectural designs. It has various applications in buildings like hospitals, parking structures, and hotels.
Advanced technology to reduce some amount of steel and concrete in the construction field.The application of U-Boot technology is to increase the number of floors. It is quick and easy to implement. This technology is very prospective in modern construction and perhaps future of civil engineering belongs to this new kind of hollow slab.
U-Boot Beton is a recycled polypropylene formwork used to create lightweight concrete slabs and rafts with large spans. It comes in various heights from 10-28 cm and dimensions of 52x52 cm. U-Boot Beton is used in applications like hospitals, parking structures, and raft foundations. It offers advantages like increased floors in buildings, large spans with thin slabs, reduced foundations, and improved acoustics. The formwork is installed by positioning U-Boot Beton units with spacers, adding rebar, and casting concrete in phases.
This document summarizes recent construction technologies presented by Chandana Yadav. It discusses technologies like robot swarm construction using drones, carbon nanotubes to strengthen materials, self-healing concrete using capsules of healing agents, permeable plastic roads that allow water drainage, aerogel as an ultra-light insulating material, drones for advanced mapping, 3D printing for construction elements and structures, using recycled plastic to build durable roads, and holographic computers to view 3D designs overlaid on the physical world. The technologies aim to make construction faster, more sustainable and durable using innovative materials, automation, and information technologies.
The document discusses the design of staircases. It begins by defining key components of staircases like treads, risers, stringers, etc. It then describes different types of staircases such as straight, doglegged, and spiral. The document outlines considerations for designing staircases like dimensions, loads, and structural behavior. It provides steps for geometric design, load calculations, structural analysis, reinforcement design, and detailing of staircases. Numerical examples are also included to illustrate the design process.
shear walls are vertical elements of the horizontal force resisting system. Shear walls are constructed to counter the effects of lateral load acting on a structure.
This document provides information on interlocking concrete block pavements (ICBP). It discusses the introduction, advantages, limitations, and applications of ICBP technology. It also describes the shapes and classifications of blocks, the construction process including compaction techniques, and includes a case study example. The conclusion states that ICBP can provide durable infrastructure at a lower cost than other pavement types for certain traffic and site conditions.
Prestressed concrete combines high-strength concrete and high-strength steel in an active manner by tensioning steel tendons and holding them against the concrete, putting it into compression. This transforms concrete from a brittle to a more elastic material. It allows for optimal use of each material's properties and better behavior under loads. Prestressed concrete was pioneered in the 1930s and its use has expanded, finding applications in bridges and other structures. Common methods are pretensioning and post-tensioning, using various tendon types, with bonded or unbonded configurations. Tensioning is done using mechanical, hydraulic, electrical or chemical devices.
This document describes an experimental study on floating concrete conducted by a group of students. Floating concrete is a type of lightweight concrete with a density lower than 1000 kg/m3 that floats on water. The study aims to identify lightweight materials that can be used to make concrete float while maintaining strength. Extended polystyrene (EPS) beads are used to replace conventional aggregates and reduce the density. The methodology involves preparing EPS-based floating concrete cubes with different proportions and testing their compressive strength and density. Test results of the raw materials are also presented.
Low cost housing is needed to address issues like growing populations, rising land and construction costs, and to provide affordable options for low-income groups. Materials selection is key to reducing costs, prioritizing locally available, low embodied energy, and recyclable materials. Techniques like using waste materials in blocks, prefabricated panels, and composite materials can significantly reduce costs compared to conventional construction. Glass fiber reinforced gypsum panels is one promising system that reduces costs, speeds up construction, and still provides structural integrity for multi-story buildings. While low-cost techniques address affordability, proper design and limitations are still required.
introduction
types of hollow slab systems
bubble deck slab??
materials used
types of bubble deck slab
schematic design
structural properties
production and carryout
advantages,disadvantages
applications
Vacuum dewatering is a process that removes excess water from freshly poured concrete to achieve an ideal water-cement ratio and improved properties. Concrete is poured and a vacuum pump then removes 15-25% of the water through a suction mat and filter pads. This results in higher strength, less cracking and shrinkage, improved abrasion resistance, and a smooth, level surface. Vacuum dewatering is commonly used for industrial and commercial floors that require high durability.
A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks: It is not an equivalent term to controlled-access highway, or a translation for autobahn, autoroute, etc.
In North American and Australian English, major roads such as controlled-access highways or arterial roads are often state highways (Canada: provincial highways). Other roads may be designated "county highways" in the US and Ontario. These classifications refer to the level of government (state, provincial, county) that maintains the roadway.
In British English, "highway" is primarily a legal term. Everyday use normally implies roads, while the legal use covers any route or path with a public right of access, including footpaths etc.
The term has led to several related derived terms, including highway system, highway code, highway patrol and highwayman.
The term highway exists in distinction to "waterway".
Slab is a thin concrete structure used for flooring that can be square, rectangular, or circular. Slabs vary in thickness from 4-6 inches depending on load and are made of cement, coarse aggregate, fine aggregate, and reinforcement bars. There are several types of slabs including one-way slabs which carry load in one direction, two-way slabs which carry load in two directions, joist slabs which have concrete ribs for support, and precast slabs which are constructed off-site and transported. Other slab types include flat plates, flat slabs, waffle slabs, hollow core slabs, and composite slabs which incorporate a steel deck.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
The document discusses repair and rehabilitation of concrete structures. It describes various causes of distress in concrete structures including structural causes, errors in design/construction, chemical reactions, and weathering. It then outlines the evaluation process for repair projects, including visual inspection, non-destructive testing, and laboratory testing to determine the extent of damage and appropriate repair methods. Specific causes of reinforcement corrosion like cracks, moisture, and concrete permeability are explained along with remedial measures.
The document discusses bendable or engineered cementitious composite (ECC) concrete. It is a type of fiber-reinforced concrete that is ductile and crack-resistant. ECC concrete uses microfibers, a slick coating on the fibers, fine sand, and superplasticizers. It bends like metal and is stronger and more durable than regular concrete. Structures made of ECC concrete are earthquake and crack resistant. Examples of uses include earthquake-proof buildings, flexible concrete canvases for military use, and more durable bridges and roads.
Structural strengthening, restoring and adding capacity is an integral part of today’s concrete repair industry. Structural strengthening may be required for increasing load capacity of beams, columns, walls, and/or slabs, seismic retrofitting, supporting additional live or dead loads not included in original design, to relieve stresses generated by design or construction errors, or to restore original load capacity to damaged structural elements.
This document provides an overview of bubble deck slabs. It describes bubble deck slabs as a method that virtually eliminates concrete from the middle of floor slabs, replacing it with hollow plastic spheres to reduce weight by 30-50%. This makes construction faster and reduces loads on foundations. Three main types - filigree elements, reinforcement modules, and finished planks - are described. Experimental results show bubble deck slabs have 80% of solid slab shear strength and 5% more deflection, but are 40% lighter. Advantages include reduced material needs, costs, and CO2 emissions. Future uses could include tall buildings, large spans, and parking areas.
This document discusses reinforced concrete columns. It begins by defining columns and different column types, including based on shape, reinforcement, loading conditions, and slenderness ratio. Short columns fail due to material strength while slender columns are at risk of buckling. The document covers column design considerations like unsupported length and effective length. It provides examples of single storey building column design and discusses minimum longitudinal reinforcement requirements in columns.
The document discusses the design of footings for structures. It begins by explaining that footings are needed to transfer structural loads from members made of materials like steel and concrete to the underlying soil. It then describes different types of shallow and deep foundations, including spread, strap, combined, and raft footings. The document provides details on designing isolated and combined footings to resist vertical loads and moments based on provisions in IS 456. It also discusses wall footings and combined footings that support multiple columns. In summary, the document covers the purpose of footings, various footing types, and design of isolated and combined footings.
Prestressed concrete has several advantages over reinforced concrete including being more crack-resistant, durable, and requiring smaller cross-sectional areas, allowing for longer spans and easier transport. However, it also has some disadvantages such as requiring specialized equipment, advanced technical knowledge, and skilled labor for construction, as well as more expensive prestressing reinforcement bars.
This document summarizes a seminar presentation on self-healing concrete given by students at VVP Polytechnic in Solapur, India under the guidance of Prof. Sathe. The presentation covered the definition, necessity, working mechanism using bacteria, tests conducted, comparison to traditional concrete, advantages like crack resistance and corrosion prevention, and applications. It discussed how bacteria and nutrients added to the concrete mix allow cracks to heal by producing limestone to fill the cracks when exposed to air and water.
This document summarizes a technical seminar presentation on U-Boot technology in construction. U-Boot technology uses recycled polypropylene formwork to create lighter concrete slabs and foundations. It has three main parts - spacer joints, connection bridges, and closing plates. There are two types of U-Boot systems - single and double. The installation process is described in 5 steps. U-Boot technology provides benefits like reduced material usage, increased column spacing, and earthquake resistance. It has applications in high-rise buildings, hospitals, and parking structures. A literature review discusses previous studies that found savings in concrete and steel usage as well as reduced CO2 emissions. The conclusion is that U-Boot technology creates more economical structures
IRJET- Analysis on Performance of Reinforced Concrete and Prestressed Slabs u...IRJET Journal
This document summarizes research on bubble deck slabs, which are reinforced concrete slabs containing spherical voids to reduce weight. Several studies found that bubble deck slabs can reduce the self-weight of a structure by up to 50% by removing unnecessary concrete. This allows for longer spans between supports, smaller foundations, and faster construction times. Finite element analysis also showed that elliptical voids may improve load-bearing capacity compared to spherical voids. In summary, bubble deck slabs offer construction advantages like lower costs, less material use, and increased structural efficiency through their innovative use of voids to remove excess concrete from slabs.
The document discusses the design of staircases. It begins by defining key components of staircases like treads, risers, stringers, etc. It then describes different types of staircases such as straight, doglegged, and spiral. The document outlines considerations for designing staircases like dimensions, loads, and structural behavior. It provides steps for geometric design, load calculations, structural analysis, reinforcement design, and detailing of staircases. Numerical examples are also included to illustrate the design process.
shear walls are vertical elements of the horizontal force resisting system. Shear walls are constructed to counter the effects of lateral load acting on a structure.
This document provides information on interlocking concrete block pavements (ICBP). It discusses the introduction, advantages, limitations, and applications of ICBP technology. It also describes the shapes and classifications of blocks, the construction process including compaction techniques, and includes a case study example. The conclusion states that ICBP can provide durable infrastructure at a lower cost than other pavement types for certain traffic and site conditions.
Prestressed concrete combines high-strength concrete and high-strength steel in an active manner by tensioning steel tendons and holding them against the concrete, putting it into compression. This transforms concrete from a brittle to a more elastic material. It allows for optimal use of each material's properties and better behavior under loads. Prestressed concrete was pioneered in the 1930s and its use has expanded, finding applications in bridges and other structures. Common methods are pretensioning and post-tensioning, using various tendon types, with bonded or unbonded configurations. Tensioning is done using mechanical, hydraulic, electrical or chemical devices.
This document describes an experimental study on floating concrete conducted by a group of students. Floating concrete is a type of lightweight concrete with a density lower than 1000 kg/m3 that floats on water. The study aims to identify lightweight materials that can be used to make concrete float while maintaining strength. Extended polystyrene (EPS) beads are used to replace conventional aggregates and reduce the density. The methodology involves preparing EPS-based floating concrete cubes with different proportions and testing their compressive strength and density. Test results of the raw materials are also presented.
Low cost housing is needed to address issues like growing populations, rising land and construction costs, and to provide affordable options for low-income groups. Materials selection is key to reducing costs, prioritizing locally available, low embodied energy, and recyclable materials. Techniques like using waste materials in blocks, prefabricated panels, and composite materials can significantly reduce costs compared to conventional construction. Glass fiber reinforced gypsum panels is one promising system that reduces costs, speeds up construction, and still provides structural integrity for multi-story buildings. While low-cost techniques address affordability, proper design and limitations are still required.
introduction
types of hollow slab systems
bubble deck slab??
materials used
types of bubble deck slab
schematic design
structural properties
production and carryout
advantages,disadvantages
applications
Vacuum dewatering is a process that removes excess water from freshly poured concrete to achieve an ideal water-cement ratio and improved properties. Concrete is poured and a vacuum pump then removes 15-25% of the water through a suction mat and filter pads. This results in higher strength, less cracking and shrinkage, improved abrasion resistance, and a smooth, level surface. Vacuum dewatering is commonly used for industrial and commercial floors that require high durability.
A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks: It is not an equivalent term to controlled-access highway, or a translation for autobahn, autoroute, etc.
In North American and Australian English, major roads such as controlled-access highways or arterial roads are often state highways (Canada: provincial highways). Other roads may be designated "county highways" in the US and Ontario. These classifications refer to the level of government (state, provincial, county) that maintains the roadway.
In British English, "highway" is primarily a legal term. Everyday use normally implies roads, while the legal use covers any route or path with a public right of access, including footpaths etc.
The term has led to several related derived terms, including highway system, highway code, highway patrol and highwayman.
The term highway exists in distinction to "waterway".
Slab is a thin concrete structure used for flooring that can be square, rectangular, or circular. Slabs vary in thickness from 4-6 inches depending on load and are made of cement, coarse aggregate, fine aggregate, and reinforcement bars. There are several types of slabs including one-way slabs which carry load in one direction, two-way slabs which carry load in two directions, joist slabs which have concrete ribs for support, and precast slabs which are constructed off-site and transported. Other slab types include flat plates, flat slabs, waffle slabs, hollow core slabs, and composite slabs which incorporate a steel deck.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
The document discusses base isolation as an earthquake protection system. It begins with an introduction to earthquakes and then defines base isolation as a system that uses flexible interfaces between a structure and its foundation to decouple the structure from ground motions during an earthquake. It describes various types of base isolation systems, including sliding and elastomeric bearing systems, and discusses considerations for implementing base isolation for structures. It provides an example of base isolation being used in a new hospital built after the collapse of a hospital during an earthquake in India.
The document discusses repair and rehabilitation of concrete structures. It describes various causes of distress in concrete structures including structural causes, errors in design/construction, chemical reactions, and weathering. It then outlines the evaluation process for repair projects, including visual inspection, non-destructive testing, and laboratory testing to determine the extent of damage and appropriate repair methods. Specific causes of reinforcement corrosion like cracks, moisture, and concrete permeability are explained along with remedial measures.
The document discusses bendable or engineered cementitious composite (ECC) concrete. It is a type of fiber-reinforced concrete that is ductile and crack-resistant. ECC concrete uses microfibers, a slick coating on the fibers, fine sand, and superplasticizers. It bends like metal and is stronger and more durable than regular concrete. Structures made of ECC concrete are earthquake and crack resistant. Examples of uses include earthquake-proof buildings, flexible concrete canvases for military use, and more durable bridges and roads.
Structural strengthening, restoring and adding capacity is an integral part of today’s concrete repair industry. Structural strengthening may be required for increasing load capacity of beams, columns, walls, and/or slabs, seismic retrofitting, supporting additional live or dead loads not included in original design, to relieve stresses generated by design or construction errors, or to restore original load capacity to damaged structural elements.
This document provides an overview of bubble deck slabs. It describes bubble deck slabs as a method that virtually eliminates concrete from the middle of floor slabs, replacing it with hollow plastic spheres to reduce weight by 30-50%. This makes construction faster and reduces loads on foundations. Three main types - filigree elements, reinforcement modules, and finished planks - are described. Experimental results show bubble deck slabs have 80% of solid slab shear strength and 5% more deflection, but are 40% lighter. Advantages include reduced material needs, costs, and CO2 emissions. Future uses could include tall buildings, large spans, and parking areas.
This document discusses reinforced concrete columns. It begins by defining columns and different column types, including based on shape, reinforcement, loading conditions, and slenderness ratio. Short columns fail due to material strength while slender columns are at risk of buckling. The document covers column design considerations like unsupported length and effective length. It provides examples of single storey building column design and discusses minimum longitudinal reinforcement requirements in columns.
The document discusses the design of footings for structures. It begins by explaining that footings are needed to transfer structural loads from members made of materials like steel and concrete to the underlying soil. It then describes different types of shallow and deep foundations, including spread, strap, combined, and raft footings. The document provides details on designing isolated and combined footings to resist vertical loads and moments based on provisions in IS 456. It also discusses wall footings and combined footings that support multiple columns. In summary, the document covers the purpose of footings, various footing types, and design of isolated and combined footings.
Prestressed concrete has several advantages over reinforced concrete including being more crack-resistant, durable, and requiring smaller cross-sectional areas, allowing for longer spans and easier transport. However, it also has some disadvantages such as requiring specialized equipment, advanced technical knowledge, and skilled labor for construction, as well as more expensive prestressing reinforcement bars.
This document summarizes a seminar presentation on self-healing concrete given by students at VVP Polytechnic in Solapur, India under the guidance of Prof. Sathe. The presentation covered the definition, necessity, working mechanism using bacteria, tests conducted, comparison to traditional concrete, advantages like crack resistance and corrosion prevention, and applications. It discussed how bacteria and nutrients added to the concrete mix allow cracks to heal by producing limestone to fill the cracks when exposed to air and water.
This document summarizes a technical seminar presentation on U-Boot technology in construction. U-Boot technology uses recycled polypropylene formwork to create lighter concrete slabs and foundations. It has three main parts - spacer joints, connection bridges, and closing plates. There are two types of U-Boot systems - single and double. The installation process is described in 5 steps. U-Boot technology provides benefits like reduced material usage, increased column spacing, and earthquake resistance. It has applications in high-rise buildings, hospitals, and parking structures. A literature review discusses previous studies that found savings in concrete and steel usage as well as reduced CO2 emissions. The conclusion is that U-Boot technology creates more economical structures
IRJET- Analysis on Performance of Reinforced Concrete and Prestressed Slabs u...IRJET Journal
This document summarizes research on bubble deck slabs, which are reinforced concrete slabs containing spherical voids to reduce weight. Several studies found that bubble deck slabs can reduce the self-weight of a structure by up to 50% by removing unnecessary concrete. This allows for longer spans between supports, smaller foundations, and faster construction times. Finite element analysis also showed that elliptical voids may improve load-bearing capacity compared to spherical voids. In summary, bubble deck slabs offer construction advantages like lower costs, less material use, and increased structural efficiency through their innovative use of voids to remove excess concrete from slabs.
The document discusses bubble deck slabs, which are hollow concrete slabs that use plastic spheres to replace ineffective concrete. There are three main types - filigree elements, reinforcement modules, and finished planks. Bubble deck slabs are lighter than traditional slabs, stronger, allow for larger spans, and use less material. They also provide benefits like reduced construction time and costs as well as being more environmentally friendly through lower CO2 emissions.
Bubble Deck and Hollow Core Slab are two types of prefabricated concrete slabs. Bubble Deck slabs contain hollow plastic balls embedded in the concrete to remove weight while maintaining strength. Hollow Core slabs are made with prestressed concrete and contain hollow voids running through them. Both systems provide benefits such as reduced weight, faster construction time, and lower costs compared to traditional cast-in-place slabs. Case studies demonstrate successful uses of these slab systems in Malaysia and overseas.
The document discusses Bubble Deck and Hollow Core Slab construction methods. Bubble Deck involves implanting hollow plastic balls into a concrete slab that is reinforced with steel, removing up to 35% of the concrete weight while maintaining strength. Hollow Core Slab is a prestressed concrete element with a constant cross-section that is manufactured using high-tensile strength prestressed strands embedded within. The document describes the materials, manufacturing processes, installation procedures, advantages and case studies for both Bubble Deck and Hollow Core Slab construction.
The document summarizes Bubble Deck slab, a biaxial voided concrete slab that replaces inactive concrete in the center with high density plastic spheres. This reduces the slab weight by 30-50% compared to a solid slab while maintaining equal stiffness. Bubble Deck slabs allow for longer spans between columns and reduced foundation loads. Key benefits include material savings, faster construction, reduced CO2 emissions, and increased structural strength and flexibility. The document outlines the materials, advantages, experimental studies, and future applications of Bubble Deck slabs.
The document summarizes a presentation on bubble deck technology. Bubble deck slabs are biaxial hollow core slabs that dramatically reduce structural weight by replacing inactive concrete in the middle with hollow plastic spheres. This allows for longer spans, faster construction, and elimination of beams. Experimental studies show bubble deck slabs have 80% of the shear strength and similar deflections compared to solid slabs, but are 40% lighter. References discussed bubble deck slabs being more efficient than traditional slabs for office floors while not as effective for bridges. The technology reduces material needs and CO2 emissions.
PERFORMANCE OF LIGHT WEIGHT AGGREGATE CONCRETE- A REVIEWIRJET Journal
This document reviews research on using lightweight aggregates to produce lightweight concrete as a more sustainable alternative to normal concrete. It discusses how lightweight concrete can be produced using natural or man-made lightweight aggregates, or by adding chemicals to create air voids. Some key advantages of lightweight concrete mentioned include reduced dead weight, transportation and lifting costs, and improved thermal and sound insulation properties. Several studies are then summarized that investigated properties of lightweight concrete made with various industrial byproducts like fly ash and glass fibers as aggregates. These studies found that initial water curing affected compressive strength, and that lightweight concrete made in this way met structural requirements while having benefits like higher workability and lower density compared to normal concrete.
This document provides an overview of bubble deck slabs. It discusses that bubble deck slabs are constructed using high density polyethylene hollow spheres placed between steel reinforcement on the top and bottom of the slab. This creates voids and reduces the slab weight by 30-50% compared to conventional solid slabs. The advantages are less material usage, faster construction, reduced costs, and lower environmental impact through less emissions. There are three main types of bubble deck slabs: filigree elements, reinforcement modules, and finished planks. The document compares the structural behavior and costs of bubble deck slabs to solid slabs.
This document provides an overview of bubble deck slabs. It begins by defining a bubble deck slab as a method of reducing the weight of floor slabs by replacing concrete in the middle with hollow plastic spheres. This reduces the slab's weight by 30-50%. Bubble deck slabs have three main benefits - reduced material costs, faster construction times, and lower environmental impact from reduced concrete usage. The document then discusses the different types of bubble deck slabs, examples of projects using them, and their structural properties like strength, deflection, vibration resistance and fire resistance. It concludes that bubble deck slabs provide weight reduction and environmental benefits compared to conventional slabs.
U-Boot technology is a formwork made of recycled polypropylene designed to create lightweight reinforced concrete slabs and foundations. It allows for the creation of "mushroom slabs" where the mushroom shape is embedded in the thickness of the slab. Using U-Boot formworks means that beams are not required, as loads can be transferred bidirectionally through the slab. This results in significant savings in concrete and reinforcement.
The document summarizes Autoclaved Aerated Concrete (AAC), a lightweight, precast building material made of natural materials including sand, cement, lime, water and aluminium powder. When poured into molds, the aluminium powder causes the concrete to expand and become highly porous. AAC offers benefits over traditional concrete like reduced weight, improved insulation and soundproofing, lower costs, and sustainability. However, familiarity with the material by contractors is still limited.
The document discusses U-boot formwork, which is a modular recycled plastic element used in reinforced concrete construction. U-boot reduces the amount of concrete needed and allows for larger spans without beams. It is available in various sizes and can be used to construct slabs, foundations, parking structures, and other building elements. The assembly process involves positioning reinforcing bars and U-boot shells, then casting concrete in phases. Key advantages are increased floor space, lighter structures, reduced material costs, and greater design flexibility. Several real-world examples employing U-boot formwork are provided.
IRJET- Experimental Study of Compressive Strength on Foam Concrete with Q...IRJET Journal
This document presents an experimental study on the compressive strength of foam concrete with quarry dust and fly ash. Foam concrete is a type of lightweight concrete with lower density and strength compared to conventional concrete. It is created by uniformly distributing air bubbles throughout the concrete mass. The study investigates the influence of varying foam concrete densities (800-1800 kg/m3) on compressive strength. Quarry dust is used as a partial replacement for sand. Sodium lauryl sulphate foam is used to vary the concrete density. Three mix designs are used with different cementitious material contents and replacements of sand with quarry dust. The results are discussed to determine the optimum foam content for decreased density and compressive strength
IRJET- Analytical Study of High Volume Fly Ash Concrete Bubble Deck SlabIRJET Journal
This document analyzes bubble deck slabs made with high-volume fly ash concrete (HVFA) and plastic balls to reduce weight. Four slab models were analyzed: one without balls, one with 16 evenly distributed balls, one with alternating horizontal rows of 8 balls, and one with alternating diagonal rows of 8 balls. Finite element analysis was conducted in ANSYS Workbench. Results showed the load capacity was comparable to traditional slabs, with up to a 10.6% reduction for some ball arrangements. Stresses and deformations increased with ball inclusion but were still within acceptable ranges. The study demonstrated bubble deck slabs can achieve strength comparable to reinforced concrete slabs while reducing weight and cement usage.
An Experimental Investigation on Light Weight Foam Cement Blocks with Quarry ...IRJET Journal
The document presents an experimental investigation on lightweight foam cement blocks with quarry dust replacement for fine aggregate. Foam concrete was produced with varying densities from 800kg/m3 to 1800kg/m3 by adjusting the foam content. The compressive strength, split tensile strength, flexural strength, and water absorption of the foam concrete cubes were tested at different densities and time periods. The results showed that a density of 1200kg/m3 produced optimal properties, with up to a 40% reduction in density compared to conventional concrete.
This document summarizes information about U-Boot® Beton, a recycled polypropylene formwork system used to create lightweight reinforced concrete slabs and rafts. It provides details on the product specifications, applications, advantages, and installation photos. The formwork allows creating voided slab structures that reduce concrete and steel usage, provide large spans, and increase architectural freedom. Benefits include lighter structures, cost savings, improved acoustics and seismic performance, and easier construction.
Hi readers, this time we talked about concrete but shortly, enough information to understand about concrete block. Here we compare to brick in some point. But if you want full information about concrete block you can read this report from this link👇
https://www.slideshare.net/mobile/AliRizgar/concret-block-full-information
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
Home security is of paramount importance in today's world, where we rely more on technology, home
security is crucial. Using technology to make homes safer and easier to control from anywhere is
important. Home security is important for the occupant’s safety. In this paper, we came up with a low cost,
AI based model home security system. The system has a user-friendly interface, allowing users to start
model training and face detection with simple keyboard commands. Our goal is to introduce an innovative
home security system using facial recognition technology. Unlike traditional systems, this system trains
and saves images of friends and family members. The system scans this folder to recognize familiar faces
and provides real-time monitoring. If an unfamiliar face is detected, it promptly sends an email alert,
ensuring a proactive response to potential security threats.
Build the Next Generation of Apps with the Einstein 1 Platform.
Rejoignez Philippe Ozil pour une session de workshops qui vous guidera à travers les détails de la plateforme Einstein 1, l'importance des données pour la création d'applications d'intelligence artificielle et les différents outils et technologies que Salesforce propose pour vous apporter tous les bénéfices de l'IA.
Height and depth gauge linear metrology.pdfq30122000
Height gauges may also be used to measure the height of an object by using the underside of the scriber as the datum. The datum may be permanently fixed or the height gauge may have provision to adjust the scale, this is done by sliding the scale vertically along the body of the height gauge by turning a fine feed screw at the top of the gauge; then with the scriber set to the same level as the base, the scale can be matched to it. This adjustment allows different scribers or probes to be used, as well as adjusting for any errors in a damaged or resharpened probe.
Software Engineering and Project Management - Software Testing + Agile Method...Prakhyath Rai
Software Testing: A Strategic Approach to Software Testing, Strategic Issues, Test Strategies for Conventional Software, Test Strategies for Object -Oriented Software, Validation Testing, System Testing, The Art of Debugging.
Agile Methodology: Before Agile – Waterfall, Agile Development.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Generative AI Use cases applications solutions and implementation.pdfmahaffeycheryld
Generative AI solutions encompass a range of capabilities from content creation to complex problem-solving across industries. Implementing generative AI involves identifying specific business needs, developing tailored AI models using techniques like GANs and VAEs, and integrating these models into existing workflows. Data quality and continuous model refinement are crucial for effective implementation. Businesses must also consider ethical implications and ensure transparency in AI decision-making. Generative AI's implementation aims to enhance efficiency, creativity, and innovation by leveraging autonomous generation and sophisticated learning algorithms to meet diverse business challenges.
https://www.leewayhertz.com/generative-ai-use-cases-and-applications/
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Blood finder application project report (1).pdfKamal Acharya
Blood Finder is an emergency time app where a user can search for the blood banks as
well as the registered blood donors around Mumbai. This application also provide an
opportunity for the user of this application to become a registered donor for this user have
to enroll for the donor request from the application itself. If the admin wish to make user
a registered donor, with some of the formalities with the organization it can be done.
Specialization of this application is that the user will not have to register on sign-in for
searching the blood banks and blood donors it can be just done by installing the
application to the mobile.
The purpose of making this application is to save the user’s time for searching blood of
needed blood group during the time of the emergency.
This is an android application developed in Java and XML with the connectivity of
SQLite database. This application will provide most of basic functionality required for an
emergency time application. All the details of Blood banks and Blood donors are stored
in the database i.e. SQLite.
This application allowed the user to get all the information regarding blood banks and
blood donors such as Name, Number, Address, Blood Group, rather than searching it on
the different websites and wasting the precious time. This application is effective and
user friendly.
Supermarket Management System Project Report.pdfKamal Acharya
Supermarket management is a stand-alone J2EE using Eclipse Juno program.
This project contains all the necessary required information about maintaining
the supermarket billing system.
The core idea of this project to minimize the paper work and centralize the
data. Here all the communication is taken in secure manner. That is, in this
application the information will be stored in client itself. For further security the
data base is stored in the back-end oracle and so no intruders can access it.
Mechatronics is a multidisciplinary field that refers to the skill sets needed in the contemporary, advanced automated manufacturing industry. At the intersection of mechanics, electronics, and computing, mechatronics specialists create simpler, smarter systems. Mechatronics is an essential foundation for the expected growth in automation and manufacturing.
Mechatronics deals with robotics, control systems, and electro-mechanical systems.
3. INTRODUCTION OF U-BOOT
In 2001 an Italian engineer, Roberto Il Grande,
developed and patented a new system of hollow
formers, in order to decrease the transportation costs
(and CO2 production). The U-Boot formwork is a
modular element made of re-cycled plastic for use in
building lighter structures in reinforced concrete cast
at the work-site The biggest advantage of U-boot is
reduce the concrete quantity
U-boot® earliest projects were executed in 2002 and
since that time it has been used all over the world
U-boot® system can be combined with other
technologies like pre-fabricated slabs and post
tensioned steel. The technology of hollow slabs with
post tensioned steel reduces the weight of slab and its
thickness.
5. WHY WE GO FOR U-BOOT ?
The main disadvantage of concrete constructions, in
case of horizontal slabs, is the high weight which
limits the span.
For this reason, basic research in the field of
reinforced concrete structures have focused on
enhancing the span, either by reducing the weight or
overcoming concrete's natural weakness in tension.
6. MATERIALS FOR U-BOOT
TECHNOLOGY
cement
steel
Fine aggregate
Course aggregate
Water
Recycled plastic mould (u-boot shells)
7. CONSTRUCTION PROCESS OF U-BOOT
Form work
Reinforcement
Placing of u-boot shells
Placing of triangular reinforcement
Concreting
Curing
8. Form work
Normal form work is laid to this type of u-boot
technology
Steel form work or wood is used
9. Flat reinforcement
On the form work the normal flat reinforcement is
provided
In this reinforcement design is based on the two way
slab
10. Placing of u-boot shells
The u-boot is placed in the as per design
The shells having a corner needles for support the shell
All shells are inter connected to steel rods
In the steel rods look like a screws
11. Triangular reinforcement
In the triangular reinforcement is provided for the
purpose of work as the beam
Bottom horizontal rod is connected to the flat slab
reinforcement
The top corner is connected to the shells connecting
rods
12. Concreting
Concrete is laid 20% of the thickness of the slab for the
bind the concrete to the shells needle
And compacted well.
After the concrete is laid to the full depth of slab
13. Finishing
The slab is makes smooth finishing in bottom ,top
and all corners of the slab
14. Shear resistance
The main difference between a solid slab and a hollow
biaxial slab is a shear resistance. Due to the reduced
concrete volume, the shear resistance will also be
reduced.
15. Carrying capacity
Test have shown that for a Bubble Deck slab with the
same load-carrying capacity can be used only 50% of the
concrete required for a solid slab, or with the same
thickness of a Bubble Deck slab the load-carrying
capacity can be increased up two times by using 65% of
concrete.
16. sound resistance
Due to this bubble deck slab the concrete quantity is
less compared to normal solid slab and providing the
recycled plastic shells so the sound resistance is more.
17. u-boot Belton is Used for
Residential buildings
Hospital buildings
Commercial buildings
School buildings
Public buildings
18. General benefits of the system
Different building types have different advantages, but
general benefits in contrast to solid slabs are:
Design Freedom
Down stand beams and bearing walls eliminated
Reducing overall costs
Reduced Dead Weight
Longer spans between columns
Construction is less weather dependent
19. General benefits of the system
Reduced foundation sizes
Reduced concrete usage
Environmentally Green and Sustainable
Emits 1 ton of carbon dioxide (CO2)
Consumes 5 million BTU of energy
Uses 2 tons of raw materials
Due to the Bubble Deck technology's green
credentials, the use of the Bubble Deck system
qualifies for LEED points in North America
20. Another use
In this u boot Belton is used for not only in the slab
also used for foundation
21. Advantages
U boot made up of recycled plastics
U boot is used I the floor slab or foundation slab
It is easy design ,easy technical ,economical
Light weight
Stress is discharged to directly to the beam slab and the load is
distributed to column directly and foundation
Monolithic construction
Load is distributed 2 direction in the slab and it is discharged
to the pillars and foundation
In a slab reinforced portion in 2 way act as the t-beam in any
spacing
Mushroom light pillars are encased to the slab
Beam is fully avoided
Pillars spacing is increased
Thickness of the slab is reduced
22. PRACTICE OF U-BOOT
TECHNOLOGY IN THE WORLD
Bergamo (Italy)
ITC-lab and research center
25,000 m2
Naas (Ireland)
Shopping center
50,000 m2
Sclay (France)
nanotechnologies research and
development center- CEA
22,000 m2
23. Conclusion
According to the analysis such conclusion can be drawn:
1. Due to the fact, that the structural behavior of this new kind of
monolithic flat slab is the same as for solid slab, excluding slab-edge
column connection, we surely can talk about appropriateness of use
and advantages of the new technology.
2. Concrete usage is reduced – 1 kg of recycled plastic replaces 100 kg
of concrete. Reducing material consumption made it possible to make
the construction time faster, to reduce the overall costs. Besides that, it
has led to reduce dead weight up to 50%, which allow creating
foundation sizes smaller.
3. The technology is environmentally green and sustainable. Avoiding
the cement production allows to reduce global CO2 emissions. The use
of the Bubble Deck system qualifies for LEED points in North
America.
4. This technology is very prospective in modern construction and
perhaps future of civil engineering belongs to this new kind of hollow
slab.