Problems associated with heat of cement hydration
· Strength reduction and cracking due to high temperature (70 C)
· Strength reduction and cracking due to temperature differentials (20 C)
is it another specification ????
Hello
Depending on the specification, the maximum allowable is about 35 degrees Celsius.
This article may be useful:
https://www.concreteconstruction.net/how-to/maximum-concrete-temperature_o
maximum temperature for the freshly mixed concrete pouring or to be delivered are between 80° and 95° F as measured by ASTM C 1064-86.
ACI 301.5, ACI 301, and ASTM C94 set no temperature limit on fresh concrete in hot weather conditions if precautions are considered in proportioning, production, delivery, placing, and curing concrete. Nonetheless, ASTM C 1064-86 set a maximum limit between 26.7°C and 35°C. This can be modified in accordance with project specifications.
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