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SYLLABUS

UNIT-I

CEMENT Portland cement – Chemical composition – Hydration, Setting of cement, Structure of hydrate cement – Test for physical properties – Different grades of cements – Admixtures – Types of Admixtures – Mineral and chemical admixtures.

UNIT-II

AGGREGATES Classification of aggregate – Particle shape and texture – Bond, Strength and other mechanical properties of aggregates – Specific gravity, Bulk density, Porosity, Adsorption and moisture content of aggregate – Bulking of sand – Deleterious substance in aggregate – Soundness of aggregate – Alkali aggregate reaction – Thermal properties – Sieve analysis – Fineness modulus – Grading of fine, Manufactured sand and coarse aggregates – Gap graded aggregate – Maximum aggregate size – Properties recycled aggregates.

UNIT-III

FRESH CONCRETE Workability – Factors affecting workability – Measurement of workability by different tests, Setting times of concrete, Effect of time and temperature on workability – Segregation and bleeding – Mixing, vibration and Revibration of concrete, Steps in manufacture of concrete – Quality of mixing water.

UNIT-IV

HARDENED CONCRETE Water/cement ratio – Abram’s Law – Gelspace ratio – Gain of strength of concrete – Maturity concept – Strength in tension and compression – Factors affecting strength – Relation between compression and tensile strength – Curing. Testing of Hardened Concrete: Compression tests – Tension tests – Factors affecting strength – Flexure tests – Splitting tests – Pull-out test, Non-destructive testing methods – Codal provisions for NDT. Elasticity, Creep and Shrinkage : Modulus of elasticity – Dynamic modulus of elasticity – Poisson’s ratio – Creep of concrete – Factors influencing creep – Relation between creep and time – Nature of creep – Effects of creep – Shrinkage – Types of shrinkage.

UNIT-V

MIX DESIGN Factors in the choice of mix proportions – Durability of concrete – Quality control of concrete – Statistical methods – Acceptance criteria – Proportioning of concrete mixes by various methods – BIS method of Design Special Concretes : Introduction to Light weight concrete – Cellular concrete – No-fines concrete, High density concrete, Fibre reinforced concrete – Polymer concrete – High performance concrete – Self Compacting concrete