Concrete how muvh strenght gain
7days,14day,s,21day's,28day's&56day's after curing
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Answer Posted / 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
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