Question

Maximum size of aggregates are used to produce 70MPa compressive strength is  ________

(a) 20-30 mm

(b) 10-20 mm

(c) 30-40 mm

(d) 40-50 mm

This question was posed to me during a job interview.

The query is from High Strength Concrete topic in division Strength of Concrete of Concrete Technology

Answer 1

Right answer is (a) 20-30 mm

The explanation is: Maximum size of aggregates is 20-30 mm are used to produce 70MPa compressive strength.