Civil Engineering MCQAE Level Civil Engineering
The compressive strength of concrete determined from a 15 cm × 15 cm cube, compared with that from a 15 cm × 30 cm cylinder, is
Building MaterialsBuilding MaterialsMEDIUM
Choose the correct answer
A
more
B
less
C
equal
D
dependent on mix proportion
Correct Answer
A. more
Why is this the answer?
The compressive strength of a 15 cm cube is typically about 1.25 times the strength of a 15 cm x 30 cm cylinder due to the end restraint effect (friction) being more pronounced in the shorter cube specimen. Therefore, the cube strength is more than the cylinder strength.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.