Question

Water repelling materials like soda, potash soaps, etc make the concrete pervious.

(a) True

(b) False

I had been asked this question by my school principal while I was bunking the class.

The above asked question is from Water Proofing Admixtures topic in section Admixtures and Construction Chemicals of Concrete Technology

Answer 1

The correct answer is:

(b) False

Water-repelling materials like soda, potash soaps, etc., are used in water-proofing admixtures to reduce the permeability of concrete, not to make it pervious. These materials help in preventing water from passing through the concrete, thereby enhancing its resistance to water infiltration and improving durability.