Traditional Culture Encyclopedia - Traditional festivals - Concrete strength calculation method
Concrete strength calculation method
The strength of concrete is the standard strength (is in the curing temperature 20; time 28 days to obtain the compressive strength value), generally 7 days to reach the standard strength of 70 ~ 80%; so, the strength of any one day is no formula, only the relative ratio, that is, according to the ratio to do 28 groups or even more, every day to get the strength value, and after that to compare!
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