For ensuring quality of concrete, use

For reinforced concrete, the aggregate used is

The internal friction between the ingredients of concrete is minimized by

The cement becomes useless if its absorbed moisture content exceeds

The compressive strength of an ordinary Portland cement (1: 3 cement mortar cube) after 7 days test should not be less t…

Curing of pavements, floors, roofs and slabs, is done by

The resistance of an aggregate to wear is known as

Soundness test of cement by Le-Chatelier's apparatus gives unsoundness due to