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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 > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Early Freezing of Non-Air-Entraining Concrete
Author(s): Donald C. McNeese
Publication: Journal Proceedings
Appears on pages(s): 293-300
Keywords: no keywords
Abstract:The critical period when freshly placed concrete is damaged by freezing has not been definitely established. To obtain data on this subject, test cylinders were frozen at various intervals up to 6 hr after molding and at temperatures from 25 to -15 F. Cylinders molded at 72 F and subjected immediately to a freezing temperature of 15 F lost about 40 percent of their compressive strength. When given more time to set before freezing, the damage was less. There was practically no loss of strength when the cylinders set 6 hr before freezing at 15 F. Cylinders exposed to 5 F lost 50 percent of their strength when frozen immediately, and 15 percent when frozen after 6 hr. A more critical condition existed when concrete was mixed from cold materials. Cylinders molded at 40 F lost 50 percent of their compressive strength when frozen at the mild temperature of 25 F. Concrete molded at 40 F pnd frozen immediately at -15 F lost 45 percent of its strength. A 50 percent loss of strength was about the maximum for any freezing condition. The length of time the concrete remained frozen or the temperature to which it was lowered once it was frozen through did not greatly affect the compressive strength.
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