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the approximate ratio of strength of cement concrete at 3 months to that at 28 days of curing is

The Approximate Ratio Of Strength Of Cement Concrete At 3 Months To That At 28 Days Of Curing Is

Many a time it may be necessary to estimate the strength of concrete not only at an early age but also at later ages 1 Many research workers have attempted to estimate the strength of concrete at 1 3 or 7 days and correlate to 28day strength Numerous research works have provided certain relationships