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In crushing test on coarse aggregates, what size particle is taken as a sample?

(a) Passing 12.5mm IS sieve

(b) Retained on 10mm IS sieve

(c) Passing 10mm and retained on 4.75mm IS sieve

(d) Passing 12.5mm and retained on 10mm IS sieve

I had been asked this question in homework.

My question is from Coarse Aggregates topic in portion Materials for Construction of Basic Civil Engineering

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The correct choice is (d) Passing 12.5mm and retained on 10mm IS sieve

Explanation: As per IS code 383, the sample should contain those aggregates which pass through 12.5mm sieve and are retained on 10mm IS sieve.

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