Hot Weather Concreting
Hot Weather Concreting
(OP)
The spec in our office requires that the contractor keep the temperature of the concrete below 90 degrees F during placement. The building is seven story, post-tensioned concrete in central Florida.
ACI 305 limits the temperature to 95 degrees F. Can the concrete go as high as 100 degrees F? What are the concesquences?
ACI 305 limits the temperature to 95 degrees F. Can the concrete go as high as 100 degrees F? What are the concesquences?






RE: Hot Weather Concreting
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RE: Hot Weather Concreting
The problem is the heat of hydration and rate of curing, which has been a classic problem and magnified by the mass of the placed concrete.
Fly ash will always slow the hydration rates, but it must be included in the submitted mix designs from the contractor or R/M supplier.
Dick
Engineer and international traveler interested in construction techniques, problems and proper design.
RE: Hot Weather Concreting
I am working in Middle East, temperatures are extreme, but adding ice to mixture solves the problem.
RE: Hot Weather Concreting
Were you able to allow the concrete to be 100 degress F?
RE: Hot Weather Concreting