The addition of the admixture to the mix ______ the surface tension.

At normal temperatures addition of sugar _________ per cent have little effect on the rate of hydration.

Concrete placed in cold weather will take ________ time to gain strength.

Nomenclature of water proofing agent.

Damp proofing ______ the process of water absorption.

What is retender?

Specific Gravity of silica fume.

Water repelling materials like soda, potash soaps, etc make the concrete pervious.