How to calculate compressive strength of concrete?

Answer Posted / rajeev kumar ranjan

depending upon quality of concrete,the nos of cube mold are decide.the cube set are stander size 150mm*150mm after pouring the cube mould.every cube mould is filled in required 3 layer&every layer 35 storks given.
the testing data such as:
1.name of the structure were the cube will be taken.
2.date of casting.
3.time of casting.
4.grade of concrete.
5.7 days result.
6.28 days result.
compressive strength= load in newton/area of cube mould(cm2)

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