The strength of cement concrete increases with

Which of the following statement is correct?

The dolomite bricks are

The compressive strength of paving bricks should not be less than

The commonly used lime for works under water or in damp situations is

The bricks after burning in kilns require about

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

The wood generally used for railway sleepers is

For the construction of retaining walls, a