Question

According to IRC:15-2011, Maximum nominal size of aggregates is ________

(a) 20 mm crushed aggregates

(b) 31.5 mm crushed aggregates

(c) 25 mm crushed aggregates

(d) 30.5 mm crushed aggregates

I had been asked this question in my homework.

The above asked question is from Road Method of Mix Design in section Concrete Mix Design of Concrete Technology

Answer 1

Correct answer is (b) 31.5 mm crushed aggregates

To explain I would say: According to IRC:15-2011, the maximum nominal size of aggregates is 31.5 mm crushed aggregates and 20mm was according to 2002.