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COLD WEATHER CONCRETE GUIDE FOR STRUCTURAL …

800-CEMSTONE | A cold WEATHER CONCRETE PLANRECOMMENDED CONCRETE TEMPERATURES & CURING DURATIONPRE-PLACEMENT, TEMPERATURE, HEATED ENCLOSURE CONCRETE MIXTURE, SLAB FINISHING & CURINGTEN cold WEATHER TIPS1234 cold WEATHER CONCRETE GUIDE FORSTRUCTURAL CONCRETEENGINEERING SERVICES The American CONCRETE Institute (ACI) 306R-16 GUIDE to cold WEATHER Concreting states that cold WEATHER concreting exists when the air temperature has fallen to or is expected to fall below 40 F during the protection period. The protection period is defined as the amount of time recommended to prevent CONCRETE from being adversely affected by exposure to cold WEATHER during construction. During the fall and winter seasons, ACI 306R-16 recommends that a cold WEATHER concreting plan be implemented for every CONCRETE placement.

TEST CYLINDERS for normal strength concrete must be cured according to ASTM C 31 which specifies an initial curing temperature of 60 to 80 °F Cure boxes, blankets or other curing methods must be used in order to comply with ASTM specifications. ASTM C 31 also requires that cylinders must be initially cured in an environment free

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