In the soundness test a specimen of hardened cement paste is ___ for a fixed time.

Initial setting time of OPC should not be less than _______

If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of t…

Which cement is used for mainly building construction where strength required with age?

Insoluble Residue mainly comes from which compound?

In cement hardening process _______ instants are very important.

Which cement used in frost resistance concrete?

Silica in excess causes ____