Civil Engineering MCQCivil Engineering (Shared)
In concrete grade M25, the number 25 denotes:
Concrete Technology & RCCGradesMEDIUM
Choose the correct answer
A
Target mean strength at 28 days
B
Mean compressive strength at 7 days
C
Characteristic compressive strength at 28 days in MPa
D
Minimum cement content in kg/m3
Correct Answer
C. Characteristic compressive strength at 28 days in MPa
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The grade designation refers to the characteristic compressive strength of 150 mm cubes at 28 days. Reference: Clause 6.1; Table 2 | Page: verify from your official BIS copy/PDF pagination
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