The document discusses several advanced construction techniques including 3D printing, photo catalytic concrete, self-healing concrete, zero cement concrete, hemp lime, wood-glass epoxy composites, and bamboo construction. It provides details on the materials, processes, advantages and disadvantages of each technique. 3D printing can construct buildings quickly using less labor and materials. Photo catalytic concrete improves air quality and self-cleans. Self-healing concrete can automatically repair cracks without human intervention. Zero cement and hemp lime concretes are more sustainable alternatives to traditional cement. Wood-glass epoxy composites and bamboo utilize agricultural and industrial wastes.
The document discusses various advanced construction techniques including 3D printing, photo catalytic concrete, self-healing concrete, zero cement concrete, hemp lime, wood-glass epoxy composites, and bamboo. 3D printing allows for complex components and entire buildings to be printed in concrete in a time and cost efficient manner. Photo catalytic concrete uses titanium dioxide to break down pollutants. Self-healing concrete can automatically repair cracks without human intervention. Zero cement concrete is an environmentally friendly alternative that uses waste materials like fly ash as binders instead of cement.
The document discusses various advanced construction techniques including 3D printing, photo catalytic concrete, self-healing concrete, zero cement concrete, hemp lime, wood-glass epoxy composites, and bamboo. 3D printing allows for complex components and entire buildings to be printed in concrete in a time and cost efficient manner. Photo catalytic concrete uses titanium dioxide to break down pollutants. Self-healing concrete can automatically repair cracks without human intervention. Zero cement concrete is an environmentally friendly alternative that uses waste materials like fly ash instead of cement.
Introduction and sustainable development in concrete technologyKathan Sindhvad
The document discusses sustainable development practices in concrete technology. It covers several topics:
1. Concrete has high embodied energy due to cement production, but has potential to be efficient over its long lifespan. Supplementary cementing materials and reducing cement content can lower environmental impacts.
2. Concrete's thermal mass allows it to reduce operational energy usage in buildings through passive heating and cooling. It also enables more efficient radiant heating systems.
3. Recycled concrete aggregate can be used in new concrete, reducing waste and costs while maintaining durability. This supports sustainable development goals.
Organic Shaped Buildings with Bamboo Bamboo as building material is not constantly use into organic shaped building. The reference shape of bamboo building mostly come from wooden building which is generally constructed using simple frame structure.
Organic Building Shape: Described by Renzo Piano’s firm as an ‘organic creature‘, the slug shaped new building rises up cheekily above the traditional 19th century neoclassical facade which contains its entrance. So that it can be seen (but only ..
bamboo as construction material
bamboo building materials for sale
bamboo for building
bamboo used for construction
bamboo for construction
how to build using bamboo
bamboo building supplies
best bamboo for construction
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
Green concrete is an environmentally friendly type of concrete that uses less energy and produces fewer carbon dioxide emissions than traditional concrete. It incorporates waste materials like ceramic and aggregates as well as industrial byproducts like fly ash. Using these recycled materials reduces the environmental impact of concrete production. Green concrete also has benefits like improved durability, strength, and fire and thermal resistance compared to normal concrete. While it has advantages for sustainability, green concrete may have higher costs and reduced lifespan compared to conventional concrete. As waste disposal is still an issue in India, adopting green concrete more widely could help reduce industrial emissions and make better use of waste materials.
Creating low-cost housing involves several considerations and strategies to minimize construction expenses while ensuring safety, functionality, and durability
The document summarizes a seminar presentation on green concrete. Green concrete uses less energy in production and produces less carbon dioxide than traditional concrete by utilizing industrial waste and recycled materials. It provides environmental benefits such as longer lifespan, reduced energy consumption and lower carbon emissions. Green concrete can be produced using ceramic waste as aggregates and fly ash or microsilica to replace some cement. This makes concrete production more sustainable while improving properties such as strength, durability and heat resistance. Although higher initial costs are a limitation, green concrete has growing potential in India to reduce environmental impact of the concrete industry.
The document discusses various advanced construction techniques including 3D printing, photo catalytic concrete, self-healing concrete, zero cement concrete, hemp lime, wood-glass epoxy composites, and bamboo. 3D printing allows for complex components and entire buildings to be printed in concrete in a time and cost efficient manner. Photo catalytic concrete uses titanium dioxide to break down pollutants. Self-healing concrete can automatically repair cracks without human intervention. Zero cement concrete is an environmentally friendly alternative that uses waste materials like fly ash as binders instead of cement.
The document discusses various advanced construction techniques including 3D printing, photo catalytic concrete, self-healing concrete, zero cement concrete, hemp lime, wood-glass epoxy composites, and bamboo. 3D printing allows for complex components and entire buildings to be printed in concrete in a time and cost efficient manner. Photo catalytic concrete uses titanium dioxide to break down pollutants. Self-healing concrete can automatically repair cracks without human intervention. Zero cement concrete is an environmentally friendly alternative that uses waste materials like fly ash instead of cement.
Introduction and sustainable development in concrete technologyKathan Sindhvad
The document discusses sustainable development practices in concrete technology. It covers several topics:
1. Concrete has high embodied energy due to cement production, but has potential to be efficient over its long lifespan. Supplementary cementing materials and reducing cement content can lower environmental impacts.
2. Concrete's thermal mass allows it to reduce operational energy usage in buildings through passive heating and cooling. It also enables more efficient radiant heating systems.
3. Recycled concrete aggregate can be used in new concrete, reducing waste and costs while maintaining durability. This supports sustainable development goals.
Organic Shaped Buildings with Bamboo Bamboo as building material is not constantly use into organic shaped building. The reference shape of bamboo building mostly come from wooden building which is generally constructed using simple frame structure.
Organic Building Shape: Described by Renzo Piano’s firm as an ‘organic creature‘, the slug shaped new building rises up cheekily above the traditional 19th century neoclassical facade which contains its entrance. So that it can be seen (but only ..
bamboo as construction material
bamboo building materials for sale
bamboo for building
bamboo used for construction
bamboo for construction
how to build using bamboo
bamboo building supplies
best bamboo for construction
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
Green concrete is an environmentally friendly type of concrete that uses less energy and produces fewer carbon dioxide emissions than traditional concrete. It incorporates waste materials like ceramic and aggregates as well as industrial byproducts like fly ash. Using these recycled materials reduces the environmental impact of concrete production. Green concrete also has benefits like improved durability, strength, and fire and thermal resistance compared to normal concrete. While it has advantages for sustainability, green concrete may have higher costs and reduced lifespan compared to conventional concrete. As waste disposal is still an issue in India, adopting green concrete more widely could help reduce industrial emissions and make better use of waste materials.
Creating low-cost housing involves several considerations and strategies to minimize construction expenses while ensuring safety, functionality, and durability
The document summarizes a seminar presentation on green concrete. Green concrete uses less energy in production and produces less carbon dioxide than traditional concrete by utilizing industrial waste and recycled materials. It provides environmental benefits such as longer lifespan, reduced energy consumption and lower carbon emissions. Green concrete can be produced using ceramic waste as aggregates and fly ash or microsilica to replace some cement. This makes concrete production more sustainable while improving properties such as strength, durability and heat resistance. Although higher initial costs are a limitation, green concrete has growing potential in India to reduce environmental impact of the concrete industry.
Civil Engineering Materiel's 2017
Prepared By
MD. Sakin Morshed
Lecturer, Département Of Civil Engineering
Types of Materials:
Bricks
1. Hollow Blocks
2. Green Bricks
Making & Use
Differentiate green bricks for the materials they are constructed and there are several proposals (in line or already in progress) of bricks with different components:
Coal ash: This was an idea of a civil engineer, Henry Liu, in 1999, with a double environmental benefit. With this material the bricks are obtained at 212 degrees in 10 hours and take advantage of 45 million tons of the waste generated by coal power plants.
Hemp and straw: This brick and green has been used by Spanish companies. Despite the apparent fragility of the material hardness is similar to conventional ones. They have the disadvantage of being more expensive but well isolated from the outside temperature. This represents a savings of energy expenditure for heating and air conditioning, so that pays the price soon.
Used plastic and peanut shells: ecological bricks of this material are a creation of the Experimental Center for Economic Housing in Argentina who says they are tough, lightweight insulation and economic. In addition to producing energy savings possible recycling of waste for production.
The document summarizes different types of specialized concretes discussed in a civil engineering seminar. It describes translucent concrete made with optical fibers, green concrete using recycled materials, geo-polymer concrete made from industrial wastes, bacterial self-healing concrete, bendable engineered cementitious composite, pervious concrete without fine aggregates, vacuum concrete where excess water is removed, and cellular lightweight concrete made with a foam agent. Each type is defined and its composition, properties, advantages, and applications are outlined.
Green concrete is an environmentally friendly type of concrete that uses less energy and produces less carbon dioxide during production than traditional concrete. It incorporates waste materials like fly ash, slag, and recycled concrete aggregates to reduce the environmental impact. Using green concrete provides benefits like longer lifespan, lower CO2 emissions, reduced energy consumption, and utilization of industrial waste. It has improved properties such as higher strength, durability, and fire and thermal resistance compared to normal concrete. While green concrete has advantages for the environment and engineering properties, its use is still developing in India due to challenges disposing of industrial waste and higher costs.
5 Types of Concrete for Needs of Modern World Construction Civilverse.orgSHAZEBALIKHAN1
The current construction industry is changing too fast. The designs have become robust than ever, the materials are produced with a higher degree of quality control and the process of making concrete has been locally standardised. The new ideas, big data, sophisticated software, high precision technology are aiding the supply of higher quality concrete.
The article covers the following contents-
a. Introduction
b. Types of Concrete for Modern World Construction Requirements
c. Self-Compacting Concrete
d. Self-Healing Concrete
e. High-Performance Concrete
f. Light Weight Concrete
g. 3-D Printed Concrete
h. Conclusion
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
The document discusses the applications of nanotechnology in construction. It begins by defining nanotechnology as manipulating materials at the atomic scale to develop new properties. It then discusses how nanomaterials like carbon nanotubes, titanium oxide, and nanocement and silica can improve the strength, durability and self-cleaning abilities of concrete. The document also explains how nanoparticles can enhance steel by reducing fatigue cracking. Nanotechnology enables self-cleaning and fire-resistant glass, as well as paints with insulating and anti-corrosive properties. Shape memory alloys can enable self-repairing structures. In summary, nanotechnology has the potential to revolutionize construction materials by developing stronger, more durable
AAC is a lightweight, precast building material that provides structure, insulation, fire resistance, and mold resistance. It is produced using aggregates, sand, lime, cement, and water which are mixed with aluminum powder. This mixture is cast, foamed with hydrogen gas, and then steam cured in an autoclave. This makes the material strong and lightweight. AAC has advantages over other building materials like improved thermal efficiency, fire resistance, workability, environmental friendliness, and acoustic and moisture control properties. It is increasingly used in construction worldwide.
Recyled aggregates (Concrete Technology and Building Materials)'Animesh Khare'
Recycled aggregates can be used as a substitute for natural aggregates in construction. They are produced from construction and demolition waste and have lower strength but also lower density than natural aggregates. While recycled aggregates provide environmental benefits and reduce costs, their use also faces challenges from a lack of standards and potential for water pollution. Effective recycling techniques include two-stage mixing, mechanical scrubbing, and heated scrubbing to remove adhered cement paste from recycled concrete pieces.
This document discusses the use of nanotechnology in construction materials and finishing materials. It begins by defining nanotechnology and describing how it can help with sustainability goals like reducing greenhouse gas emissions. It then outlines various nanomaterials that can be used in construction, such as nano-concrete, nano-iron, and nano-treated wood. It provides examples of nanomaterials and their functions, like titanium dioxide for self-cleaning. The document also discusses the costs and pros and cons of nanomaterials, and provides some examples of nanotechnology applications in architecture, like self-cleaning building facades.
Bioconcrete as a sustainable construction materialMuhammed Abbas
This document summarizes a seminar presentation about bioconcrete as a sustainable construction material. Bioconcrete is a type of self-healing concrete that uses bacteria to seal cracks in concrete. It is composed of regular concrete ingredients along with bacterial spores and a nutrient. When cracks form, the spores activate, consume the nutrient, and precipitate minerals to fill the cracks. This extends the lifespan of concrete structures and reduces maintenance costs, providing environmental and economic benefits. The bacteria most suitable for this are spore-forming Bacillus species that can survive in the highly alkaline environment of concrete. Bioconcrete shows promise as a more sustainable alternative to traditional concrete.
Use of Fiber is one of the vital and emerging trends in Construction Technology. Fiber can be considered as an alternative in the use of an air entraining agent providing sufficient freeze thaw protection and moreover as a reinforcing material. Fiber reinforced materials are composite materials that typically consist of strong fibers embedded in resin matrix. It is a composite obtained by adding a single type or a blend of fibers to the conventional concrete mix. The fibers provide strength and stiffness to the composite and generally carry most of the applied loads. The matrix acts to bond and protect the fibers and to provide for transfer of stress from fiber to fiber through shear stresses. Fibers can be in form of steel fibers, glass fibers, natural fibers, synthetic fibers, etc. The mechanism by which fibres produce resistance to freezing and thawing is that fibres introduction reduces water absorption of the concrete increasing penetration resistance to de-icing salts. Reduced water absorption is a function of the fibres to reduce plastic shrinkage cracking, reducing the ability of water to permeate into the bleed in a concrete. So this research paper describes experimental studies on the use of coconut fibre as enhancement of concrete.
Recycled aggregates are produced from construction and demolition waste and comprised of crushed, graded inorganic particles. They provide environmental benefits over natural aggregates by reducing usage and waste. While recycled aggregates have properties like lower strength and higher water absorption compared to natural aggregates, they can be used in applications like embankments, backfill, and building blocks. Recycling techniques include two-stage mixing, mechanical scrubbing, and heated scrubbing to remove adhered cement paste from aggregate surfaces.
Concrete is an important construction material due to its strength, durability, versatility and cost-effectiveness. It is composed of cement, water and aggregates. Concrete offers advantages such as durability under various weather conditions, the ability to be molded into different shapes, fire resistance, sustainability and ease of construction. These properties make concrete widely used for infrastructure, housing and commercial structures.
This document discusses the recycling of demolished concrete. It defines recycling as collecting materials that would otherwise be waste and reusing them for new purposes. When concrete structures are demolished, the rubble can be recycled rather than sent to landfills. The concrete is crushed and sorted, with smaller pieces used as aggregate in new construction projects and larger pieces used for retaining walls and erosion control. Research shows recycled concrete can make up around 35% of new concrete mixes with only small reductions in strength, though durability may be reduced. The document also outlines the benefits of recycling concrete such as reducing environmental impacts and construction costs.
Presentation on Modern construction materialsAxay Sharma
Translucent concrete is a light-transmitting concrete made with fine concrete and optical fibers. It is manufactured by alternately layering concrete and fiber fabrics in a mold. Light is transmitted through the fibers embedded in the concrete. Translucent concrete can be used for building materials, subway stations, and ceilings to reduce lighting costs. However, it is more expensive than regular concrete due to the optical fibers. Self-healing cement is being developed that contains microcapsules of epoxy resin to automatically repair cracks. It also regulates heat using phase-change materials. This cement has advantages of reducing maintenance costs and increasing structure lifespan but ingredients make it more expensive. Carbon fiber is strong yet light material made of carbon strands thinner than
MAINTENANCE OF CIVIL ENGINEERING STRCTURES.pptxNamanGhevariya
This document provides information about maintenance of civil engineering structures. It discusses the importance of maintenance, objectives of maintenance, and focuses on crack repairing methods like epoxy injection, grouting, and stitching. It also discusses maintenance of beams, columns, slabs through fiber reinforced polymer and concrete jacketing techniques. The procedures, advantages, and disadvantages of different crack repairing and structural strengthening methods are explained.
This document discusses housing challenges in developing countries and proposes solutions using locally available and cost-effective materials. It focuses on bamboo as a building material and provides details on its properties, uses in construction, treatment methods to improve durability, and new technologies developed to produce bamboo-based building components. The document also describes an interlocking compressed stabilized earth block system that provides a sustainable approach to low-cost housing construction through its use of locally sourced materials, energy efficiency, structural strength, and resistance to natural hazards.
This document discusses different types of special concretes, including light weight concrete, aerated concrete, and no fines concrete. It provides details on the properties and production methods of these concretes. Light weight concrete has lower density than normal concrete, which provides benefits like reduced structural weight. Aerated concrete is made by introducing air bubbles into cement mortar, creating a lightweight cellular structure. No fines concrete omits fine aggregates, consisting of only cement, coarse aggregates, and water. These special concretes are used for applications requiring specific properties like lower density or higher insulation.
Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
Civil Engineering Materiel's 2017
Prepared By
MD. Sakin Morshed
Lecturer, Département Of Civil Engineering
Types of Materials:
Bricks
1. Hollow Blocks
2. Green Bricks
Making & Use
Differentiate green bricks for the materials they are constructed and there are several proposals (in line or already in progress) of bricks with different components:
Coal ash: This was an idea of a civil engineer, Henry Liu, in 1999, with a double environmental benefit. With this material the bricks are obtained at 212 degrees in 10 hours and take advantage of 45 million tons of the waste generated by coal power plants.
Hemp and straw: This brick and green has been used by Spanish companies. Despite the apparent fragility of the material hardness is similar to conventional ones. They have the disadvantage of being more expensive but well isolated from the outside temperature. This represents a savings of energy expenditure for heating and air conditioning, so that pays the price soon.
Used plastic and peanut shells: ecological bricks of this material are a creation of the Experimental Center for Economic Housing in Argentina who says they are tough, lightweight insulation and economic. In addition to producing energy savings possible recycling of waste for production.
The document summarizes different types of specialized concretes discussed in a civil engineering seminar. It describes translucent concrete made with optical fibers, green concrete using recycled materials, geo-polymer concrete made from industrial wastes, bacterial self-healing concrete, bendable engineered cementitious composite, pervious concrete without fine aggregates, vacuum concrete where excess water is removed, and cellular lightweight concrete made with a foam agent. Each type is defined and its composition, properties, advantages, and applications are outlined.
Green concrete is an environmentally friendly type of concrete that uses less energy and produces less carbon dioxide during production than traditional concrete. It incorporates waste materials like fly ash, slag, and recycled concrete aggregates to reduce the environmental impact. Using green concrete provides benefits like longer lifespan, lower CO2 emissions, reduced energy consumption, and utilization of industrial waste. It has improved properties such as higher strength, durability, and fire and thermal resistance compared to normal concrete. While green concrete has advantages for the environment and engineering properties, its use is still developing in India due to challenges disposing of industrial waste and higher costs.
5 Types of Concrete for Needs of Modern World Construction Civilverse.orgSHAZEBALIKHAN1
The current construction industry is changing too fast. The designs have become robust than ever, the materials are produced with a higher degree of quality control and the process of making concrete has been locally standardised. The new ideas, big data, sophisticated software, high precision technology are aiding the supply of higher quality concrete.
The article covers the following contents-
a. Introduction
b. Types of Concrete for Modern World Construction Requirements
c. Self-Compacting Concrete
d. Self-Healing Concrete
e. High-Performance Concrete
f. Light Weight Concrete
g. 3-D Printed Concrete
h. Conclusion
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
The document discusses the applications of nanotechnology in construction. It begins by defining nanotechnology as manipulating materials at the atomic scale to develop new properties. It then discusses how nanomaterials like carbon nanotubes, titanium oxide, and nanocement and silica can improve the strength, durability and self-cleaning abilities of concrete. The document also explains how nanoparticles can enhance steel by reducing fatigue cracking. Nanotechnology enables self-cleaning and fire-resistant glass, as well as paints with insulating and anti-corrosive properties. Shape memory alloys can enable self-repairing structures. In summary, nanotechnology has the potential to revolutionize construction materials by developing stronger, more durable
AAC is a lightweight, precast building material that provides structure, insulation, fire resistance, and mold resistance. It is produced using aggregates, sand, lime, cement, and water which are mixed with aluminum powder. This mixture is cast, foamed with hydrogen gas, and then steam cured in an autoclave. This makes the material strong and lightweight. AAC has advantages over other building materials like improved thermal efficiency, fire resistance, workability, environmental friendliness, and acoustic and moisture control properties. It is increasingly used in construction worldwide.
Recyled aggregates (Concrete Technology and Building Materials)'Animesh Khare'
Recycled aggregates can be used as a substitute for natural aggregates in construction. They are produced from construction and demolition waste and have lower strength but also lower density than natural aggregates. While recycled aggregates provide environmental benefits and reduce costs, their use also faces challenges from a lack of standards and potential for water pollution. Effective recycling techniques include two-stage mixing, mechanical scrubbing, and heated scrubbing to remove adhered cement paste from recycled concrete pieces.
This document discusses the use of nanotechnology in construction materials and finishing materials. It begins by defining nanotechnology and describing how it can help with sustainability goals like reducing greenhouse gas emissions. It then outlines various nanomaterials that can be used in construction, such as nano-concrete, nano-iron, and nano-treated wood. It provides examples of nanomaterials and their functions, like titanium dioxide for self-cleaning. The document also discusses the costs and pros and cons of nanomaterials, and provides some examples of nanotechnology applications in architecture, like self-cleaning building facades.
Bioconcrete as a sustainable construction materialMuhammed Abbas
This document summarizes a seminar presentation about bioconcrete as a sustainable construction material. Bioconcrete is a type of self-healing concrete that uses bacteria to seal cracks in concrete. It is composed of regular concrete ingredients along with bacterial spores and a nutrient. When cracks form, the spores activate, consume the nutrient, and precipitate minerals to fill the cracks. This extends the lifespan of concrete structures and reduces maintenance costs, providing environmental and economic benefits. The bacteria most suitable for this are spore-forming Bacillus species that can survive in the highly alkaline environment of concrete. Bioconcrete shows promise as a more sustainable alternative to traditional concrete.
Use of Fiber is one of the vital and emerging trends in Construction Technology. Fiber can be considered as an alternative in the use of an air entraining agent providing sufficient freeze thaw protection and moreover as a reinforcing material. Fiber reinforced materials are composite materials that typically consist of strong fibers embedded in resin matrix. It is a composite obtained by adding a single type or a blend of fibers to the conventional concrete mix. The fibers provide strength and stiffness to the composite and generally carry most of the applied loads. The matrix acts to bond and protect the fibers and to provide for transfer of stress from fiber to fiber through shear stresses. Fibers can be in form of steel fibers, glass fibers, natural fibers, synthetic fibers, etc. The mechanism by which fibres produce resistance to freezing and thawing is that fibres introduction reduces water absorption of the concrete increasing penetration resistance to de-icing salts. Reduced water absorption is a function of the fibres to reduce plastic shrinkage cracking, reducing the ability of water to permeate into the bleed in a concrete. So this research paper describes experimental studies on the use of coconut fibre as enhancement of concrete.
Recycled aggregates are produced from construction and demolition waste and comprised of crushed, graded inorganic particles. They provide environmental benefits over natural aggregates by reducing usage and waste. While recycled aggregates have properties like lower strength and higher water absorption compared to natural aggregates, they can be used in applications like embankments, backfill, and building blocks. Recycling techniques include two-stage mixing, mechanical scrubbing, and heated scrubbing to remove adhered cement paste from aggregate surfaces.
Concrete is an important construction material due to its strength, durability, versatility and cost-effectiveness. It is composed of cement, water and aggregates. Concrete offers advantages such as durability under various weather conditions, the ability to be molded into different shapes, fire resistance, sustainability and ease of construction. These properties make concrete widely used for infrastructure, housing and commercial structures.
This document discusses the recycling of demolished concrete. It defines recycling as collecting materials that would otherwise be waste and reusing them for new purposes. When concrete structures are demolished, the rubble can be recycled rather than sent to landfills. The concrete is crushed and sorted, with smaller pieces used as aggregate in new construction projects and larger pieces used for retaining walls and erosion control. Research shows recycled concrete can make up around 35% of new concrete mixes with only small reductions in strength, though durability may be reduced. The document also outlines the benefits of recycling concrete such as reducing environmental impacts and construction costs.
Presentation on Modern construction materialsAxay Sharma
Translucent concrete is a light-transmitting concrete made with fine concrete and optical fibers. It is manufactured by alternately layering concrete and fiber fabrics in a mold. Light is transmitted through the fibers embedded in the concrete. Translucent concrete can be used for building materials, subway stations, and ceilings to reduce lighting costs. However, it is more expensive than regular concrete due to the optical fibers. Self-healing cement is being developed that contains microcapsules of epoxy resin to automatically repair cracks. It also regulates heat using phase-change materials. This cement has advantages of reducing maintenance costs and increasing structure lifespan but ingredients make it more expensive. Carbon fiber is strong yet light material made of carbon strands thinner than
MAINTENANCE OF CIVIL ENGINEERING STRCTURES.pptxNamanGhevariya
This document provides information about maintenance of civil engineering structures. It discusses the importance of maintenance, objectives of maintenance, and focuses on crack repairing methods like epoxy injection, grouting, and stitching. It also discusses maintenance of beams, columns, slabs through fiber reinforced polymer and concrete jacketing techniques. The procedures, advantages, and disadvantages of different crack repairing and structural strengthening methods are explained.
This document discusses housing challenges in developing countries and proposes solutions using locally available and cost-effective materials. It focuses on bamboo as a building material and provides details on its properties, uses in construction, treatment methods to improve durability, and new technologies developed to produce bamboo-based building components. The document also describes an interlocking compressed stabilized earth block system that provides a sustainable approach to low-cost housing construction through its use of locally sourced materials, energy efficiency, structural strength, and resistance to natural hazards.
This document discusses different types of special concretes, including light weight concrete, aerated concrete, and no fines concrete. It provides details on the properties and production methods of these concretes. Light weight concrete has lower density than normal concrete, which provides benefits like reduced structural weight. Aerated concrete is made by introducing air bubbles into cement mortar, creating a lightweight cellular structure. No fines concrete omits fine aggregates, consisting of only cement, coarse aggregates, and water. These special concretes are used for applications requiring specific properties like lower density or higher insulation.
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Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
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Advance Techniques in Construction.pptx
1. UNIT 5
Advance Techniques in
Construction
3D Printing, photo catalytic admixture, self-healing
concrete, zero cement concrete, hemp lime, wood-
glass epoxy composites, bamboo.
2. 3D Printing
•3D printing is defined as the process of making an
object from a three-dimensional model by generating
successive stacked thin layers of material
•3D printing is the computer-controlled sequential
layering of materials to create three-dimensional
shapes.
•It is particularly useful for prototyping and for
the manufacture of geometrically complex
components.
3. •In the construction industry, 3D printing can be used
to create construction components or to ‘print’ entire
buildings.
•Concrete 3D printing in the construction industry
helps save time, effort and material compared to
traditional construction methods.
4.
5. •Advantages of 3d printing
1. With the help of 3d printing technology we can
construct house within 24 hours.
2. Less labour required.
3. Waste material used for construction.
4. 3D printing technology can save between 30 to 60
percent building material and shortens production
time by 50 to even 70 percent.
5. 3D printing technology , the dry construction
method used by WinSun is clean, compact, and
much more time efficient without compromising
quality.
6. Economical and cheap construction.
6. •Disadvantages of 3d printing
1. Technical person required for construction.
2. More machineries is required.
3. Reduce employees in the industry, since 3D printer
does most of the work.
4. A limited number of materials can be used, since
the same printer may not be able to print the
required multiple materials.
5. Conventional product manufacturing &renting
companies could suffer as their products are no
longer required.
6. Can not print all materials.
7. Require area for movable retractable rails.
7. Photo catalyst Admixture
A titanium dioxide (TiO2)is used as an admixture or
superficial layer.
•Titanium dioxide is a heterogeneous photo catalyst
that uses sunlight and moisture to absorb and render
oxides of nitrogen (NO and NO2) into nitrate ions
(NO3
−), which are then either washed away by rain or
soaked into the concrete to form stable compounds.
•In the presence of light and water, Photo catalyst
creates strong oxidation agent and electronic holes to
breakdown the organic matter to carbon dioxide and
water.
8. Basic Functions of Photo catalyst
1. Sterilizing Effect- Photo catalyst does not only kill
bacteria cells, but also decompose the cell itself.
The titanium dioxide photo catalyst has been found
to be more effective than any other antibacterial
agent.
2. Deodorizing effect - This will help combine the
organic gases to form a single molecule that is not
harmful to humans thus enhance the air cleaning
efficiency.
9. 3. Anti fogging, Self-Cleaning - When the original
building materials are coated with a photo catalyst,
a protective film of titanium provides the self-
cleaning building by becoming antistatic, super
oxidative, and hydrophilic.
4. Water Purification – Photo catalyst coupled with
UV lights can oxidize organic pollutants into
nontoxic materials, such as CO2 and water and can
disinfect certain bacteria.
This technology is very effective at removing
further hazardous organic compounds (TOCs) and
at killing a variety of bacteria and some viruses in
the secondary wastewater treatment.
10. Self- healing concrete
• Self-healing concrete is an artificial or synthetically
created substance that has the built-in ability to
automatically repair the damage to itself without any
external diagnosis or human intervention.
•The invention comes in three forms:
1. a spray that can be applied to existing construction
for small cracks that need repairing,
2. a repair mortar for structural repair of large
damage and
3. self-healing concrete itself, which can be mixed in
quantities as needed.
11. ADVANTAGES :
1. Incorporation of the agent in the concrete will be
relatively cheap as well as easy when the aggregate
is immobilized in porous light weight aggregate
prior to addition to the concrete mixture.
2. The self healing bacterial concrete helps in reduced
maintenance and repair costs of steel reinforced
concrete structures.
3. Oxygen is an agent that can induce corrosion, as
bacteria feeds on oxygen tendency for the
corrosion of reinforcement can be reduced.
12. 4. Self healing bacteria can be used in places where
humans find it difficult to reach for the
maintenance of the structures. Hence it reduces
risking of human life in dangerous areas and also
increases the durability of the structure.
5. Formation of crack will be healed in the initial stage
itself thereby increasing the service life of the
structure than expected life.
13. DISADVANTAGES :
1. If the volume of self healing agents (bacteria and
calcium lactate) mixed becomes greater than 20%,
the strength of the concrete is reduced.
2. Preparation of self healing concrete needs the
requirement of bacteria and calcium lactate.
Preparation of calcium lactate from milk is costlier.
Hence preparation of self healing concrete costs
double than conventional concrete.
14. Zero cement concrete
•Zero Cement Concrete is an improved version of Geo-
polymer Concrete.
•It is used as alternative material for cement concrete.
•It is not used as a binding material.
•In spite of cement we use fly ash, GGBS as a binders.
•Additionally, Steel Slag was partially replaced with
Blue Metal in order to make it both durable and
economical.
15. •Process:
•Aggregates and fly ash are mixed with proper
intimation.
•And then alkaline activator solution is added to
dissolve Si and Al atoms in source materials.
•By this process aggregates and fly ash get bonded.
•And then finally we get concrete.
16. •Properties:
•Non toxic.
•Sets at room temperature.
•High compressive strength.
•High bonding strength.
•Chemical resistance.
•Highly resistance to heat
18. Disadvantages:
•It requires special handling.
•Process is faster.
•It is sensitive.
How over come the disadvantages
• Reduce the carelessness.
•Give extra effect.
•Proper intimation
19. HEMP LIME
•Hemp Lime products are a super food for the building
industry.
•Products made from Hemp and Lime offer healthier
alternatives in the categories of insulation, wall
systems, textiles, and more in large part because they
do not contain harmful petrochemicals.
•They absorb carbon dioxide from the atmosphere.
•Hemp Lime products are naturally fire-resistant.
•Hemp and lime products can be fully recycled and
reused to support a zero-waste economy.
20. •Hemp lime is a natural product, performance can vary
slightly, but commercial hemp lime wall systems tend
to achieve:
dry density: 270–330 kg/m3
thermal conductivity: 0.07–0.09 W/mK
(typical U-value at 300 mm = 0.21 W/m2 K)
compressive strength: 0.1–0.2 N/mm2
• compressive strength: 0.1–0.2 N/mm2
21. production process of hemp lime:
•At the manufacturing location, hemp is stored in a
storage room, and the lime is stored in silos.
•The hemp and lime are added to water and thus
mixed.
•The mixture then travels through a conveyor belt
where a machine shapes it into blocks.
•The blocks are then taken to an area to cure. Once
cured, the blocks are separated into 2 m3 batches and
loaded on pallets.
•They are wrapped up with polyethylene packaging
film and polypropylene straps to be transported to a
construction site.
22. Advantages:
•Hemp lime are eco-friendly and energy-
efficient construction material.
•Hemp lime help in the thermal regulation which
regulates the temperature of the building.
•Hemp lime blocks are very light in weight and can
transport easily from one place to another place.
•It is a disaster-resistant, which helps to ensure the
safety of the buildings.
•It is a strong and durable eco-friendly construction
material.
•Construction with the help of Hemp lime blocks is
easy and fast.
23. •It provides a healthy indoor environment for the
occupants.
•Hemp lime can be the best option for which is used in
the Renovation of the buildings.
•It has high moisture handling capacity.
•It is also used for decorative work.
24. Disadvantages:
•Hemp lime walls are thicker in size as compared to
other walls which reduce the carpet area.
•Hemp lime has low compressive strength
•It cannot be used for heavy loads, it requires frames
to carry loads.
•Hemp lime cannot be used in the foundation of the
buildings.
•Hemp lime is not readily available as compared to
the concrete, because it is difficult to find hemp.
•Builders have a lack of knowledge about Hemp lime
Construction.
25. Application:
•It is widely used in the Extension or Renovation of the
buildings.
•It is used for insulation for the old buildings.
•It is also used for plastering work.
•It is used for floor as well as roof insulation.
•It is also used in the external and internal insulation of
the buildings.
•It is used for creating an air-tight seal around the
home
26. Wood-Glass epoxy composite
• A material which is composed of two or more
materials at a microscopic scale and have chemically
distinct phases.
•The use of wood-glass-epoxy composite techniques
for reinforcing and jointing timber.
•Due to many processing industries the waste saw dust
is available, so in the case of wood products these
materials can be used.
•These composites are important especially due to it's
capability of utilizing the natural fiber resources such
as wood powder, rice husk, bamboo dust, jute, flax,
coir, sisal, plastic waste, areca etc.
27. PROCEDURE:
•The weighed mixture of wood fiber and glass and epoxy is
poured into a clean moisture free bowl and mixed well
uniformly.
•The mixture is left over night for better wetting .
•The hardener corresponding to the amount of resin used
is then poured and mixed well and left for few minutes.
•The Molten Wax is applied to the inner walls of the mould
for easy removal of casting.
• The mixture is then poured into the mould and the
surface is flattened with the flattener.
•The casting is removed after 1 day by removing the side
plates of the moulds.
28. Advantages:
1. Bonds strongly to most materials including metals,
concrete, glass, ceramics, stone, wood, leather.
2. They have low density and good thermal property
so they find various applications related aerospace
industries.
3. Excellent resistance to chemicals and solvents.
4. Very good electrical insulating properties.
5. Outstanding mechanical strength including tensile,
compressive, flexural and modulus.
6. High material stability against corrosion.
29. Disadvantages:
1. Wood- glass epoxy composites is the poor
resistance to moisture absorption.
2. It is not used for heavy load structure.
3. Cost (can be reduced by using polyesters).
4. Difficulties with application including health risks.
30. Bamboo
• Bamboo is a wood-like material that is naturally
available in hollow cylindrical forms that include
regular growth nodes every few inches.
•Generally speaking, bamboo has higher compressive
strength, tensile strength and flexural strength than
any wood.
•As such, it is popular as an engineered product
produced with strips of bamboo fiber and glue to form
boards.
•Depending on the manufacturer, this can be stronger
than a hardwood such as oak.
31. •Bamboo is a woody plant in the grass family that can
grow up to 36 inches in a day.
•Due to its fast growth rate, high strength to weight
ratio and bend ability it is an extremely economical
and practical material.
•Bamboo is not particularly resistant to rot but is used
outdoors none the less
a scaffolding, fencing
and decorative items
in gardens.
33. Various Structural Shapes of Bamboo:
1. Squared cross-section can be obtained by
compressing the growing stalk of bamboo within a
square section.
2. Arch shapes of bamboo can also be created by
compressing the bamboo's growth into the desired
shape. This would cost lesser than it would to get
the same form with normal timber.
3. Curved and Flat shapes of bamboo are achieved
through traditional techniques like applying heat
and pressure.
34. Methods of Working on Bamboo
•For a bamboo to be used as a building material, it
must be worked on to create desired shape, bend and
length to be used for structural or other purposes.
•Following are the different works involved with use of
bamboo:
1. Splitting
2. Shaping
3. Bending
35. Advantages of Bamboo:
1. Tensile strength: Bamboo has higher tensile
strength than steel because its fibers run axially.
2. Fire Resistance: Capability of bamboo to resist fire
is very high and it can withstand temperature up to
4000 C. This is due to the presence of high value of
silicate acid and water.
3. Elasticity: Bamboo is widely preferred in
earthquake prone regions due to its elastic
features.
36. 4. Weight of bamboo: Bamboos due to their low
weight are easily displaced or installed making it
very easier for transportation and construction.
5. Unlike other building materials like cement and
asbestos, bamboo poses no danger to health.
6. They are cost effective and easy to use.
7. They are especially in great demand in earthquake
prone areas.
37. Disadvantages of Bamboo:
1. They require preservation
2. Shrinkage: Bamboo shrinks much greater than any
other type of timber especially when it loses water.
3. Durability: Bamboo should be sufficiently treated
against insect or fungus attack before being utilized
for building purposes.
4. Jointing: Despite prevalence of various techniques
of jointing, structural reliability of bamboo is
questionable.