Concrete Technology

Portland cement: chemical composition, hydration, setting, fineness; test for physical properties; grades; Admixtures: mineral and chemical - accelerators, retarders, air entrainers, plasticizers, fly ash, silica fume; Aggregates: classification, particle shape and texture, mechanical properties, specific gravity, bulk density, bulking of sand; Deleterious substances, alkali-aggregate reaction, sieve analysis, fineness modulus, grading

Steps in manufacture: proportioning, mixing, placing, compaction, finishing and curing; Workability and factors affecting it; measurement by different tests; Setting times; effect of time and temperature on workability; Segregation and bleeding; ready mixed concrete; shotcrete

Water/cement ratio, Abram's law, gel/space ratio; maturity concept; Strength in tension and compression; factors affecting strength; relation between compressive and tensile strength; Curing; testing: compression, tension, flexure and splitting tests; Non-destructive testing methods and codal provisions for NDT

Modulus of elasticity; dynamic modulus of elasticity; Poisson's ratio; Creep of concrete and factors influencing creep; Relation between creep and time; nature and effects of creep; Shrinkage and types of shrinkage

Ready mixed concrete; fibre reinforced concrete - types of fibres and factors affecting FRC properties; High performance concrete; self-consolidating and self-healing concrete; Factors in the choice of mix proportions; quality control and statistical methods; acceptance criteria; Proportioning of concrete mixes by ACI method and IS code method