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How many hoppers are there in compaction factor test?

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in Basic Civil Engineering by (111k points)
How many hoppers are there in compaction factor test?

(a) 1

(b) 4

(c) 2

(d) 3

I had been asked this question in quiz.

Asked question is from Tests on Concrete in portion Building Construction of Basic Civil Engineering

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Best answer
Right choice is (c) 2

The explanation is: There are 2 hoppers and 1 cylinder in the apparatus. Concrete is poured in hopper A (first one).  The hinged bottom is opened, concrete falls to 2^nd hopper B.  Again, hinged bottom is opened, concrete is allowed to fall into cylinder C.

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