The percentage of dicalcium silicate in belit is more than ____

Tensile strength of rubber belts is about ___

Expanding cement is obtained by the addition of an expanding medium like _____ to the ordinary cement.

It results in the failure of concrete made from the cement if the amount of alkali oxides in it exceeds _____

We can obtain lake asphalt from lakes at _____

Coal gas is obtained by thermal decomposition of coal in the presence of air at low temperature.

Which of the following is the quickest to react with water when the water is added to the cement?

In the wet process in the manufacturing of portland cement, argillaceous material is thoroughly mixed with water in ____…