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Laying, jointing and testing of pipes
This document discusses various types of pipe joints used in water supply systems. It describes bell and spigot joints, expansion joints, flanged joints, mechanical joints, flexible joints, screwed joints, collar joints, and A.C. pipe joints. For each type of joint it provides details on the purpose, construction, and materials used. The document also covers topics like pipe laying works, testing of pipe lines, hydraulic design of pipe networks, and appurtenances in pipe lines.
Durability of Concrete structures by Dr.Vinay Kumar B M
Durability of Concrete structures by Dr.Vinay Kumar B MVIDYA VIKAS INSTITUTE OF ENGINEERING AND TECHNOLOGY
Permeability of concrete, chemical attack, acid attack, efflorescence, Corrosion in concrete. Thermal conductivity, thermal diffusivity, specific heat. Alkali Aggregate ReactionRecommended
Laying, jointing and testing of pipes
This document discusses various types of pipe joints used in water supply systems. It describes bell and spigot joints, expansion joints, flanged joints, mechanical joints, flexible joints, screwed joints, collar joints, and A.C. pipe joints. For each type of joint it provides details on the purpose, construction, and materials used. The document also covers topics like pipe laying works, testing of pipe lines, hydraulic design of pipe networks, and appurtenances in pipe lines.
Durability of Concrete structures by Dr.Vinay Kumar B M
Durability of Concrete structures by Dr.Vinay Kumar B MVIDYA VIKAS INSTITUTE OF ENGINEERING AND TECHNOLOGY
Permeability of concrete, chemical attack, acid attack, efflorescence, Corrosion in concrete. Thermal conductivity, thermal diffusivity, specific heat. Alkali Aggregate ReactionSelf healing concrete
INFORMATION REGARDING SELF HEALING OF SMALL CRACKS IN CONCRETE MEMBERS.IT CAN BE DONE BY DIRECT, INDIRECT AND INJECTION METHOD.
Repair of concrete members
The document discusses different methods for repairing concrete members: grouting, guniting/shotcreting, epoxy injection, and jacketing. Grouting involves placing cementitious materials into cavities using pressure to fill voids and increase load capacity. Guniting uses a cement-sand mixture applied pneumatically to restore damaged surfaces. Epoxy injection establishes entry points to inject epoxy under pressure into cracks. Jacketing increases member size and stiffness by adding new concrete to encase the existing member, improving load capacity through composite action.
Experience Certificate (2)
Vatsal Paghadar successfully completed a 6-month internship at Foothills Bridge Co, where he became proficient in AutoCAD and drafting final drawings for clients. He analyzed reinforced concrete structures and performed calculations for bridge dismantling plans. His employer praised him for being polite, hardworking, and carrying himself professionally.
El abc de los metrados y lectura de planos
El documento habla sobre la importancia de la privacidad y la seguridad de los datos en la era digital. Explica que debido al gran volumen de datos personales recopilados en línea, es crucial que las empresas protejan esta información de manera responsable para mantener la confianza de los clientes.
Manual del-residente-de-obra
A empresa anunciou um novo produto que combina hardware e software para fornecer uma solução completa para clientes. O produto oferece recursos avançados de inteligência artificial e aprendizado de máquina para ajudar os usuários a automatizar tarefas complexas. Analistas acreditam que o produto pode ser um sucesso comercial se for fácil de usar e entregar valor real para os clientes.
Self healing concrete
Self-healing concrete has the ability to automatically repair cracks without external intervention. It exists as a spray, mortar, or within the concrete mixture. Cracks are inevitable in concrete over time due to loads and deterioration. Self-healing concrete helps prevent further cracking through two main mechanisms: bacteria that precipitate minerals to fill cracks or capsules containing chemicals that bond when cracks form. While initial costs are high, it reduces long-term maintenance. The concrete has improved durability, permeability and applications in infrastructure but bacteria use remains costly and strength increases slowly.
Prestressed Concrete
Pre-stressed concrete builds in compressive stresses during construction to oppose tensile stresses that occur when in use. There are two main types: pretensioning and post-tensioning. Pretensioning involves stretching wires or strands called tendons between anchorages before concrete is placed, while post-tensioning stresses tendons after concrete has gained strength. Common prestressing systems include Freyssinet, Magnel, Lee-McCall, and Gifford-Udall. Prestressed concrete is more durable and requires less material than reinforced concrete, but requires specialized techniques and quality control. It is widely used in bridges and building construction.
Self healing concrete by Azlan Ahmad
Self-healing concrete uses bacteria and calcium lactate to autonomously repair cracks up to 0.5mm wide. When water enters cracks, bacteria metabolize calcium lactate to produce limestone that fills the cracks. Tests show self-healing concrete has higher compressive and flexural strength than normal concrete, and is more durable and crack-resistant. While more expensive initially, self-healing concrete reduces long-term maintenance costs by preventing corrosion and extending structure lifespan. Current research focuses on optimizing bacterial and nutrient encapsulation to ensure reliable self-healing.
Vebe test
This document describes the Vebe test procedure used to determine the workability of fresh concrete. The test involves filling a concrete mould, vibrating it, and measuring the time taken for cement grout to coat the bottom of a transparent disc placed on the surface. Times range from 3-30 seconds to indicate workability, from medium to very low. The test follows BS 1881 using equipment like a consistometer, mould, and vibrating table operated at 50Hz.
water supply system L-2,3.pdf
There are four main types of distribution systems: dead end or tree system, grid iron system, circular or ring system, and radial system. The grid iron system lays pipes in an interconnected network with water flowing in both directions, allowing any point to receive supply from two directions with higher pressure. It is suitable for cities with a rectangular layout. Advantages include only a small portion being affected during repairs and free circulation of water. Disadvantages include increased costs due to more pipes and valves needed.
Construction of post tension slab
This document provides an overview of the construction process for post-tension slabs. It begins with a brief history of post-tensioned concrete before defining post-tension slabs as reinforced concrete slabs supported directly by columns without beams. The construction process involves installing strands or tendons in ducts before pouring concrete, stressing the strands after the concrete reaches strength, and then grouting the ducts. Key advantages of post-tension slabs are that they are lighter, allow for greater flexibility in design, and have reduced costs compared to conventional slabs.
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Self healing concrete
INFORMATION REGARDING SELF HEALING OF SMALL CRACKS IN CONCRETE MEMBERS.IT CAN BE DONE BY DIRECT, INDIRECT AND INJECTION METHOD.
Repair of concrete members
The document discusses different methods for repairing concrete members: grouting, guniting/shotcreting, epoxy injection, and jacketing. Grouting involves placing cementitious materials into cavities using pressure to fill voids and increase load capacity. Guniting uses a cement-sand mixture applied pneumatically to restore damaged surfaces. Epoxy injection establishes entry points to inject epoxy under pressure into cracks. Jacketing increases member size and stiffness by adding new concrete to encase the existing member, improving load capacity through composite action.
Experience Certificate (2)
Vatsal Paghadar successfully completed a 6-month internship at Foothills Bridge Co, where he became proficient in AutoCAD and drafting final drawings for clients. He analyzed reinforced concrete structures and performed calculations for bridge dismantling plans. His employer praised him for being polite, hardworking, and carrying himself professionally.
El abc de los metrados y lectura de planos
El documento habla sobre la importancia de la privacidad y la seguridad de los datos en la era digital. Explica que debido al gran volumen de datos personales recopilados en línea, es crucial que las empresas protejan esta información de manera responsable para mantener la confianza de los clientes.
Manual del-residente-de-obra
A empresa anunciou um novo produto que combina hardware e software para fornecer uma solução completa para clientes. O produto oferece recursos avançados de inteligência artificial e aprendizado de máquina para ajudar os usuários a automatizar tarefas complexas. Analistas acreditam que o produto pode ser um sucesso comercial se for fácil de usar e entregar valor real para os clientes.
Self healing concrete
Self-healing concrete has the ability to automatically repair cracks without external intervention. It exists as a spray, mortar, or within the concrete mixture. Cracks are inevitable in concrete over time due to loads and deterioration. Self-healing concrete helps prevent further cracking through two main mechanisms: bacteria that precipitate minerals to fill cracks or capsules containing chemicals that bond when cracks form. While initial costs are high, it reduces long-term maintenance. The concrete has improved durability, permeability and applications in infrastructure but bacteria use remains costly and strength increases slowly.
Prestressed Concrete
Pre-stressed concrete builds in compressive stresses during construction to oppose tensile stresses that occur when in use. There are two main types: pretensioning and post-tensioning. Pretensioning involves stretching wires or strands called tendons between anchorages before concrete is placed, while post-tensioning stresses tendons after concrete has gained strength. Common prestressing systems include Freyssinet, Magnel, Lee-McCall, and Gifford-Udall. Prestressed concrete is more durable and requires less material than reinforced concrete, but requires specialized techniques and quality control. It is widely used in bridges and building construction.
Self healing concrete by Azlan Ahmad
Self-healing concrete uses bacteria and calcium lactate to autonomously repair cracks up to 0.5mm wide. When water enters cracks, bacteria metabolize calcium lactate to produce limestone that fills the cracks. Tests show self-healing concrete has higher compressive and flexural strength than normal concrete, and is more durable and crack-resistant. While more expensive initially, self-healing concrete reduces long-term maintenance costs by preventing corrosion and extending structure lifespan. Current research focuses on optimizing bacterial and nutrient encapsulation to ensure reliable self-healing.
Vebe test
This document describes the Vebe test procedure used to determine the workability of fresh concrete. The test involves filling a concrete mould, vibrating it, and measuring the time taken for cement grout to coat the bottom of a transparent disc placed on the surface. Times range from 3-30 seconds to indicate workability, from medium to very low. The test follows BS 1881 using equipment like a consistometer, mould, and vibrating table operated at 50Hz.
water supply system L-2,3.pdf
There are four main types of distribution systems: dead end or tree system, grid iron system, circular or ring system, and radial system. The grid iron system lays pipes in an interconnected network with water flowing in both directions, allowing any point to receive supply from two directions with higher pressure. It is suitable for cities with a rectangular layout. Advantages include only a small portion being affected during repairs and free circulation of water. Disadvantages include increased costs due to more pipes and valves needed.
Construction of post tension slab
This document provides an overview of the construction process for post-tension slabs. It begins with a brief history of post-tensioned concrete before defining post-tension slabs as reinforced concrete slabs supported directly by columns without beams. The construction process involves installing strands or tendons in ducts before pouring concrete, stressing the strands after the concrete reaches strength, and then grouting the ducts. Key advantages of post-tension slabs are that they are lighter, allow for greater flexibility in design, and have reduced costs compared to conventional slabs.