Question

Chemically active pore fillers __________ the setting of concrete.

(a) Retards

(b) Decrease

(c) Accelerates

(d) No change

This question was posed to me in an interview for job.

The question is from Water Proofing Admixtures in division Admixtures and Construction Chemicals of Concrete Technology

Answer 1

Right answer is (c) Accelerates

To explain I would say: Chemically active pore fillers accelerate the setting of concrete and thus render the concrete more impervious at early age.