XPERT AC 950 is a unique, next generation, non-chloride accelerating admixture for concrete. In laboratory and field evaluations against the major competitive non-chloride accelerators, XPERT AC 950 has demonstrated unsurpassed acceleration of setting time and strength over a wide range of cold weather temperatures and dosages. With adequate protection, concrete containing XPERT AC 950 can be placed in sub-freezing temperatures with superior rate-of-set and compressive strength results. Field evaluations must be conducted to determine the XPERT AC 950 dosage necessary to meet rate-of-set and strength development requirements, minimum acceptable ambient and concrete temperatures considering your concrete components and jobsite conditions, and the level and length of protective measures.