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Concrete which is subjected to compressive. stresses by inducing tensile stresses in the. reinforcement. Attributes. Concrete strength is usually 5,000 psi at 28 days. and at least 3,000 psi at the time of. pre-stressing. Use hardrock …properties of concrete-–setting and hardening, strength, and dimensional stability-–depend primarily on calcium silicate hydrate. It is the heart of concrete. As concrete hardens, its gross volume remains almost unchanged, but hardened concrete contains pores filled with water and air that have no strength.

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Description: Concrete Construction 3 major costs of concrete Formwork costs including labor, equipment, and materials Cost of reinforcing steel and placement Concrete materials ... – PowerPoint PPT presentation. Number of Views: 364. Avg rating:3.0/5.0.Self Compacting/Consolidating Concrete (SCC) is among the new materials that can be used for some of our pressing needs for high performance and more durable materials, and innovative construction methods in the 21st century. 37 …

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ACCORDING TO ASTM (Cylindrical molds are used). For high-slump concrete: Concrete placed in cylindrical molds in three layers, and each layer is compacted 25 times with a rod (3/8 in D). For low-slump concrete: Concrete placed in two layers and …The synonyms are: Aerated concrete Lightweight concrete Porous concrete. INTRODUCTIONLight weight concrete - or ed concrete - is a versatile material which consists primarily of a cement based mortar mixed with at least 20% of volume air.It possesses high flow ability, low self-weight, minimal consumption of aggregate, controlled low ...

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CONCRETE TECHNOLOGY PPT. 1. GROUP MEMBER- -Sumit Kumar Pandey -Mridul pandey -Sagun Ram -Alok kumar maurya -Anurag yadav SAMBHUNATH INSTITUTE OF ENGINEERING & TECHNOLOGY B.tech. …Auto-Claved concrete bricks(AAC) seminar ppt. 1. ... .. It is now considered as a new generation brick also known as Autoclaved Cellular Concrete (ACC) bricks or Autoclaved Lightweight Concrete (ALC) bricks or, autoclaved aerated concrete bricks(AAC). These AAC bricks are made with a mixture of cement, fly ash, lime, aluminium and water ...

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Calculation of Lap length in Reinforced Concrete Structures. Cement Industry and Construction Industry Profile. Cement Manufacturing Process Simplified Flow Chart. Cement & Concrete Mix Design. Chemical Admixtures In Concrete. Composite Construction of Buildings – Composite Beams. Composite Slabs & Columns – Advantages and Basic Concepts.This "see-through" development is changing the perception of concrete's opaque mass. Reactive powder concrete is extremely workable, durable and yields ultra-high strengths without using coarse aggregates. Reaching compressive strengths of 30,000 pounds per square inch (psi), this new-age concrete also has tensile strength with the ...

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ADVANCES IN CONCRETE TECHNOLOGY: There have been a number of advances in new concrete technology in the past ten years. Fresh concrete Hardened concrete. 12. HIGH PERFORMANCE CONCRETE: The …Batching Of Concrete The process of measuring concrete mix ingredients by either mass or volume and introducing them into the mixer. To produce concrete of uniform quality, the ingredients must be measured accurately for each …

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New Generation Concrete, Corp. prides itself on our high-quality craftsmanship and outstanding concrete projects. We work with our clients every step of the way to ensure all your ideas and plans come true. ... (719) 964-6684; Click Here and Call Us Now! [email protected];concrete is widely used around the world. the consumption rate of cement of a country gives the development rate of the country. hence concrete is used in most of the construction works. concrete tends to crack when there is …

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4753 Views Download Presentation. The Five Generations of Computers. First generation computers (1940-1956). The first computers used vacuum tubes for circuitry and magnetic drums for memory. They were often …Concrete Testing. Concrete Testing is one of the most essential. procedures in identifying the high top quality of. tangible. These examining come in many types at. various condition of tangible. Some of the analyze is needed when tangible is. wet (such as workability test), some analyze is. needed when tangible begins to solidify (such as.

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Concrete Presentation on Principles of Concrete & Concrete Mix Design- IS 10262 Dr. Nirmal Kumar Professor of Civil Engineering {B.Sc (Engg) - BIT Sindri, M.Tech -IIT Delhi, Ph.D -IIT Delhi} MIE, LM -ISET, LM -IBC, Chartered Engineer ... New Generation Concrete needs use of Special2. To use residual products from the concrete industry, i.e. stone dust (from crushing of stones). 3. To use residual products from other industries not traditionally used in concrete, i.e. fly ash from bio fuels and sewage …

Deterioration of concrete ppt - SlideShare - principles of concrete mix design.ppt

Concrete is a composite material made from several readily available constituents (aggregates, sand, cement, water) . Slideshow 4121026 by zahina. Browse . Recent Presentations Content Topics Updated Contents …THE DETERIORATION OF CONCRETE HARIKRISHNA M.S. 2. Introduction • The pH of concrete is very high (about 13 initially), providing a non-corrosive, durable alkaline environment to the reinforcement. • But many a …

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Concrete ppt. 1. MNS UET MULTAN. 2. Sohail Haider Mushhood ur Rehman Muhammad Imran Nawaz Muhammad Saqib Hanif. 3. The word "concrete" originates from the Latin word "concretus", which means to grow together. 4. CONCRETE Concrete is a composite material in which a binding material mixed in water with well grouped fine and coarse aggregates.SPECIAL CONCRETE & CONCRETING TECHNIQUES. 6.1 Light weight concrete 6.2 Plum concrete 6.3 Fibre reinforced concrete 6.4 Polymer concrete 6.5 High density concrete 6.6 No fines concrete 6.7 Ferro cement …