The type of aggregates of same nominal size, which contain less voids when compacted, are

Inert material of a cement concrete mix, is

The workability of concrete can be improved by

A moist aggregate is one

A concrete using an air entrained cement

Minimum number of days required for curing fresh laid concrete under normal atmospheric condition is

Harshness in concrete is due to the excess of

Weight of an oven dry sand and air dry sand are 500 gm and 520 gm respectively. If the weight of the same sand under sat…