Civil + Structural Engineer: Cold Weather Concreting – Why Monitoring Concrete Temperatures is Essential

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Published on Civil + Structural Engineer in February 2020.

Regulating the temperature of concrete in cold weather is essential to its proper strength development. The American Concrete Institute (ACI) specifies in ACI 306R-16 Guide to Cold Weather Concreting recommended concrete temperatures based on the air temperature. It recommends a minimum temperature during placement, minimum temperature at mixing, and maximum allowable gradual temperature drop within 24 hours after the end of protection from the cold weather.  These recommendations are often mirrored as requirements in job specifications.

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