Concrete cube 7 day strength
Hi,
I require a concrete of 40MPa strength for an experiment. for the trial mix i tested cubes after 7 days and got an average strength of 32MPa with a sd of 1, I would like to know if according to IS codes this is adequate. If not what is the desirable strength.
I require a concrete of 40MPa strength for an experiment. for the trial mix i tested cubes after 7 days and got an average strength of 32MPa with a sd of 1, I would like to know if according to IS codes this is adequate. If not what is the desirable strength.
Replies
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KSS Manian
There is no clause in recent IS456:2000 take about the formula on 7th day. But in SP24 - IS456-1978 CL 5.2.1 mentioned the formula.SaiwalHi,
I require a concrete of 40MPa strength for an experiment. for the trial mix i tested cubes after 7 days and got an average strength of 32MPa with a sd of 1, I would like to know if according to IS codes this is adequate. If not what is the desirable strength.
You can use this for your reference. In the recent publications they removed this formula.
You are reading an archived discussion.
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