Question: k ) The relation between strength ( MPa ) and maturity ( C . h r ) for a concrete mix is as follows: F

)

The relation between strength

(

MPa

)

and maturity

(C . h r)

for a concrete mix is as follows:

F c = - 33 + 24 l o g M

If the concrete will be cured using an atmospheric pressure steam curing cycle as

.

shown in the figure below. Calculate the strength at the end of the steam curing cycle. If the strength required at the end of the steam curing cycle is

40

MPa, what would be the time needed for the maximum temperature period to achieve this strength?

k ) The relation between strength ( MPa ) and

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