Concrete Technology

16CE118

UNIT – I CEMENTS & ADMIXTURES: Portland Cement – Chemical Composition – Hydration, Setting of Cement – Structure of Hydrated Cement – Tests on Physical Properties – Different Grades of Cement – Admixtures – Mineral and Chemical Admixtures. AGGREGATES: Classification of Aggregate – Physical, Strength & Other Mechanical Properties of Aggregate – Specific Gravity, Bulk Density, Porosity, Adsorption & Moisture Content of Aggregate – Soundness of Aggregate– Deleterious Substance in Aggregate – Alkali Aggregate Reaction – Thermal Properties – Sieve Analysis – Fineness Modulus – Grading Curves – Grading of Fine & Coarse Aggregates – Gap Graded Aggregate – Bulking of Sand.

 UNIT – II FRESH CONCRETE: Workability – Factors Affecting Workability – Measurement of Workability by Different Tests – Setting Times of Concrete – Segregation & Bleeding – Mixing and Vibration of Concrete – Steps in Manufacture of Concrete – Quality of Mixing Water. HARDENED CONCRETE: Water / Cement Ratio – Abram‟s Law – Gel Space Ratio – Strength of Concrete – Maturity Concept – Strength in Tension & Compression – Compression Tests – Tension Tests –– Flexure Tests – Splitting Tests – Relation Between Compressive & Tensile Strength – Factors Affecting Strength – Curing.

 UNIT – III ELASTICITY, CREEP & SHRINKAGE: Modulus of Elasticity – Dynamic Modulus of Elasticity – Poisson‟s Ratio – Creep of Concrete – Factors Influencing Creep – Relation Between Creep & Time – Nature of Creep – Effects of Creep – Shrinkage – Types of Shrinkage. NON-DESTRUCTIVE TESTING METHODS: Introduction to Non-Destructive Testing Methods – Rebound Hammer – Ultra Pulse Velocity Method – Pullout – Profometer – Codal Provisions for NDT.

UNIT – IV MIX DESIGN: Durability of Concrete – Quality Control of Concrete – Factors Considered for Mix Proportions – Statistical Methods of Mix Design – Acceptance Criteria – Proportioning of Concrete Mixes by Various Methods – ACI Method & IS 10262 Method

 UNIT – V SPECIAL CONCRETES: Light Weight Concrete – Light Weight Aggregate Concrete – Cellular Concrete – No Fines Concrete – High Density Concrete – Fiber Reinforced Concrete – Different Types of Fibers – Factors Affecting Properties of F.R.C – High Performance Concrete – Self Compacting Concrete – Self Healing Concretes. 

TEXT BOOKS: 1. Concrete Technology by M.L. Gambhir. – Tata Mc. Graw Hill Publishers, New Delhi 2. Concrete Technology by M.S. Shetty. – S. Chand& Co.; 2004 REFERENCES: 1. Properties of Concrete by A.M. Neville – Pearson publication – 4th edition 2. Concrete: Micro structure, Properties and Materials by P.K. Mehta and J.M. Monteiro, Mc-Graw Hill Publishers 3. Design of Concrete Mix by Krishna Raju, CBS publishers. 4. Non-Destructive Test and Evaluation of materials by J. Prasad& C.G.K. Nair, McGraw hill Publishers, New Delhi.

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