Answer / girish rawat

After 7 days = 70%
14 days = 80%
21 days = 90%
28 days 100%
56 days 105%

Answer / sjtbehera

there are diffrent type of grade of concrete. now a days we
are starting M20 grade of concrete.

Grade of concrete 7 dyas ( kg/cmsq) 28 day (kg/cmsq)
m20 135 200
m25 140 250
m30 200 300
m35 235 350
m40 270 400

Answer / sajjad rasool

7-70

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