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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Tools > Frequently Asked Questions
Q. What are set-controlling admixtures? A. Set-controlling admixtures are used to modify the time of setting (ACI 212.3R). Retarding admixtures extend the time of setting. They are used in hot weather to compensate for the effects of high temperature. Accelerating admixtures reduce the time of setting and accelerate early strength development. They are used in cold weather to compensate for the effects of low temperature. References: SP-1(02); ACI CT-23; E4-12; ACI 212.3R-16; SP-288; ASTM C494 Topics in Concrete: Admixture; Concrete Fundamentals; Cold Weather; Materials; Hot Weather
Q. What are set-controlling admixtures?
A. Set-controlling admixtures are used to modify the time of setting (ACI 212.3R). Retarding admixtures extend the time of setting. They are used in hot weather to compensate for the effects of high temperature. Accelerating admixtures reduce the time of setting and accelerate early strength development. They are used in cold weather to compensate for the effects of low temperature.
References: SP-1(02); ACI CT-23; E4-12; ACI 212.3R-16; SP-288; ASTM C494
Topics in Concrete: Admixture; Concrete Fundamentals; Cold Weather; Materials; Hot Weather
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