Reason behind concrete tested at 28 days
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We generally do compressive strength testing of cube or cylinder to measure the strength of concrete after 28 days. The rate of gain of strength of concrete is proportional to the time after casting. The rate of gain of strength of concrete increases in the first 28 days and then it decreases. 99% oRead more
We generally do compressive strength testing of cube or cylinder to measure the strength of concrete after 28 days. The rate of gain of strength of concrete is proportional to the time after casting.
The rate of gain of strength of concrete increases in the first 28 days and then it decreases. 99% of compressive strength of concrete is achieved during the first 28 days after the casting.
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