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Concrete
Cement
Aggregates
Concrete Mix Proportions
IS : 6461 (Part VII) - 19732.354 Workability -That property of freshly mixed concrete or mortar which determines the ease and homogeneity with which it can be mixed, placed, compacted, and finished. It is the amount of energy to overcome friction and cause full consolidation.
Nominal Mix Concrete
Design Mix Concrete
Properties of Concrete Compressive Strength
Tensile Strength
Modulus of Elasticity
Shrinkage of Concrete
Free Shrinkage, causes volume change, but no stresses
before shrinkage After Shrinkage
Restrained Shrinkage- creates stresses, which may cause cracking
Restrained shrinkage crackingParallel cracking perpendicularto the direction of shrinkage
Creep of Concrete
Thermal Expansion of Concrete
Durability of Concrete General Features
Freezing and Thawing
Exposure to Sulphate Attack
Fire Resistance, Corrosion & Cover
Requirements of RCC Members
Tables 16, 16A of IS:456-2000
A fire-resistance rating typically means the duration for which a passive fire protection system can withstand a standard fire resistance test. This can be quantified simply as a measure of time, or it may entail a host of other criteria, involving other evidence of functionality or fitness for purpose.
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