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Question
According the IS specification, the compressive strength of ordinary Portland cement after three days should not be less than :
According the IS specification, the compressive strength of ordinary Portland cement after three days should not be less than :
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Solution
The correct option is C 16 MPa
For 33 grade OPC, the 3 days strength should not be less than 16 MPa and for 43 grade OPC, the 3 days strength should not be less than 21 MPa.
For 33 grade OPC, the 3 days strength should not be less than 16 MPa and for 43 grade OPC, the 3 days strength should not be less than 21 MPa.
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