For the construction of retaining walls, a

The quarrying of stone by the method of wedging is successfully carried out in

The strength of timber is maximum in the direction

A first class brick should have a minimum crushing strength of

The slump test of concrete is used to measure its

The workability of cement concrete can be improved by

Which of the following is an example of silicious rock?

The setting and hardening of cement paste is mainly due to the hydration and hydrolysis of

The lime mortar is made from