5 CE 6.1 MODERN CONCRETE TECHNOLOGY AND PRACTICE
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UNIT: 1 |
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Strength of Concrete: |
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strength, behaviour of concrete under uniaxial, biaxial and triaxial stress states, Split |
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Tensile strength and modulus of rupture -test methods and empirical formulae for their |
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estimation. Mineral and Chemical admixtures in Concrete: types and their uses. |
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UNIT: 2 |
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Vibrator compacted concrete in buildings, pavements and |
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Concrete Production: |
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infrastructure projects etc., pumpable concrete, roller compacted concrete and Ready |
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Mixed Concrete- methods, specific features and uses etc. |
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Rheology of Concrete |
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: Flow ability, Segregation, Bleeding and Viscosity etc. - Factors |
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affecting, methods of determination, related standards etc. |
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UNIT 3: |
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Elasticity, Creep and Shrinkage of Concrete: |
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Elastic behaviour, Method of |
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determination of Elastic modulus, factors affecting modulus of elasticity, early volume |
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change in concrete due to plastic shrinkage, autogeneous shrinkage and drying |
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shrinkage- factors affecting them, typical values and their methods of determination. |
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Creep of concrete- specific creep, typical values, creep recovery, factors affecting creep |
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and its determination with available standard. |
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UNIT 4: |
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Interfacial transition zone, hydration kinetics, hydrated |
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Microstructure of Concrete: |
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cement paste (hcp), calcium hydroxide, presence of micro-cracks in concrete mass - their |
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characteristics and significance on performance of concrete |
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Penetrability of Concrete |
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: Permeability, sorptivity and diffusion in concrete- test |
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methods and significance. |
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: Physical and chemical processes, recently employed methods |
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Durability of Concrete |
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of tests for ensuring longer and durable concrete structures- case studies. |
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UNIT 5: |
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Special Aggregates: |
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Light weight, heavy weight- their characteristics and uses in |
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concrete. |
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Specific purpose Concretes and Cement based composites: Self Compacting Concrete, |
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Fiber cements and fiber reinforced cement based composites, Mass Concrete and |
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Polymer Concrete etc.- materials, production and application areas. |
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High performance concrete |
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- performance characteristics in fresh and hardened states, |
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production precautions - some case studies of specific tailored HPC in India. |