The word "Concrete" orginates from the Latin word "Concretus", Which means to grow together. Nature of Concrete * It is a composite material * Aggregates : are 65-80% of volume Fine Aggregate - Sand Coarse aggregate - Stone * Cement : General term and applies to any bimder Portland Cement Fly ash Ground slag Silica fume * Water : Properties of quality concrete * Workability * Durabilty * Strength * Chemical Resistance * Abrasion Resistance Concrete as a material Concrete literally forms the basis of our modern life: * Roadways * Airstrips * Infrastructures * Harbour Protections * Water Distribution Advantages of Concrete * Ability to cast desired shapes. Ex: Arches, Shells, Columns, Piers,etc., * Properties can be tailored according to need (Strength, Durability, etc.,) * Ability to resist high temperture. * Does not require any protective coatings * Can be architectural and structural members at the same time.
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