Cement Concrete is a mixture of cement, sand, pebbles or crushed rock and water, which when placed in the skeleton of forms and allowed to cure, becomes hard like a stone. Cement concrete has attained the status of a major building material in all branches of modern construction because of the following reasons:

1. It can be readily moulded into durable structural items of various sizes and shapes at practically no considerable labour expenditure.
2. It is possible to control the properties of cement concrete within a wide range by using appropriate ingredients