Question

Mortar is composed of cement and sand, and concrete is composed of cement, sand, and gravel.

(a) True

(b) False

I have been asked this question in unit test.

Question is taken from Analysis of Rates of Cement Concrete topic in division Analysis of Rates of Civil Engineering Drawing

Answer 1

Correct answer is (a) True

The explanation is: Cement is the binding element in both concrete and mortar. It is made most commonly of limestone, clay, shells, silica sand and other materials.

Concrete is composed of cement, sand, and gravel or other fine and coarse aggregate. The addition of water activates the cement, which is the element responsible for binding the mix together to form one solid object.

Mortar is composed of cement and sand. When water is mixed in with this product, the cement is activated. Whereas concrete can stand alone, mortar is used to hold together bricks, stones or other such hardscape components.