Civil Engineering MCQJE Level Civil Engineering
The specific gravity of Ordinary Portland Cement is approximately:
Building MaterialsBuilding MaterialsEASY
Choose the correct answer
A
2.65
B
2.90
C
3.15
D
3.50
Correct Answer
C. 3.15
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Specific gravity of OPC = 3.15 (IS 4031). This is used in concrete mix design to calculate absolute volumes and to check for adulteration (lower SG indicates impurities or fly ash addition). Water has SG = 1.0, aggregate SG ≈ 2.6–2.7.
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