Silica in excess causes ____

Standard consistency of cement is tested by _______

Final setting time of cement should not be more than ___

Which cement is used to create bond with old concrete surface?

After placing each layer in a slump cone, the concrete in the cone is tapped to remove remaining voids.

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…

Initial setting time of OPC should not be less than _______

When concrete is to be laid under water _______ is to used.