Normal Concrete
The concrete in which common ingredients i.e. aggregate, water, cement are used is known as normal concrete. It is also called normal weight concrete or normal strength concrete.
It has a setting time of 30 - 90 minutes depending upon moisture in atmosphere, fineness of cement etc.
The development of the strength starts after 7 days the common strength values is 10 MPa (1450 psi) to 40 MPa (5800 psi). At about 28 days 75 - 80% of the total strength is attained.
Almost at 90 days 95% of the strength is achieved.
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