Clay predominates in calcareous materials while calcium carbonate predominates in argillaceous materials.

The total alumina content in high alumina cement should not be less than ___

___________ is the binding material of acid-resistant cement.

The power to resist an electric stress is called as _______

We can obtain lake asphalt from lakes at _____

The colour of natural cement is ______

Which of the following is not a natural abrasive?

Rubber glues are obtained by dissolving rubber in _____