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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 methods are commonly used to ensure sufficient moisture for curing concrete? A. Concrete is kept moist by providing water through ponding, continuous sprinkling, covering with wet burlap, cotton mats, or similar materials, or by moisture retention through covering with specially prepared paper, polyethylene, or other plastic sheeting; or by spraying with a liquid membrane-forming curing compound. Leaving metal or well-oiled wood forms in place may offer considerable protection against the loss of moisture, especially if the upper unformed concrete surfaces are kept saturated with wet burlap, sand, or soaker hoses. Water is added to replace the water that has been lost. If none is lost, none needs to be added unless the w/cm is less than 0.4 by mass, or unless the composition of the cement requires added water (ACI 223). References: SP-1(02); ACI 308R-16; ACI 209R-92; ACI 302.1R-15; ACI 223R Topics in Concrete: Concrete Fundamentals; Curing; Placing
Q. What methods are commonly used to ensure sufficient moisture for curing concrete?
A. Concrete is kept moist by providing water through ponding, continuous sprinkling, covering with wet burlap, cotton mats, or similar materials, or by moisture retention through covering with specially prepared paper, polyethylene, or other plastic sheeting; or by spraying with a liquid membrane-forming curing compound. Leaving metal or well-oiled wood forms in place may offer considerable protection against the loss of moisture, especially if the upper unformed concrete surfaces are kept saturated with wet burlap, sand, or soaker hoses. Water is added to replace the water that has been lost. If none is lost, none needs to be added unless the w/cm is less than 0.4 by mass, or unless the composition of the cement requires added water (ACI 223).
References: SP-1(02); ACI 308R-16; ACI 209R-92; ACI 302.1R-15; ACI 223R
Topics in Concrete: Concrete Fundamentals; Curing; Placing
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