The percentage of silica in a good brick clay should vary from

The hand made bricks are

Lime occurs in a free state in nature.

The shrinkage of ordinary concrete is about

Which of the following paint is highly resistant to fire?

Which of the following constituent, when present in excess quantity in clay causes the bricks to melt and distort during…

Which of the following is an example of agrillaceous rock?

For railway ballast, the stone should be

The initial setting of cement is caused due to