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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: Effects of Temperature Changes on Concrete as Influenced by Aggregates
Author(s): Stanton Walker, D. L. Bloem and W. G. Mullen
Publication: Journal Proceedings
Appears on pages(s): 661-679
Keywords: no keywords
Abstract:Summarizes tests of concrete and mortar exposed to water and air tempera-tures ranging from 40-140 F with varying rates of change in temperature. Changes in length, weight, dynamic modulus and flexural strength were measured on specimens containing several different fine and coarse aggregates having thermal coefficients of expansion ranging from relatively low to relatively high. Principal findings of the tests were: thermal coefficients of ex-pansion of concrete and mortar containing different aggregates varied approxi-mately in proportion to the thermal coefficient and quantity of aggregate in the mixture; an approximation of the thermal coefficient of expansion of aggregate may be made from determinations of the thermal coefficients of concrete of varying proportions; changes in temperature were destructive to the concrete with sudden changes being much more severe than slower ones; and concretes having higher coefficients of expansion were less resistant to temperature changes than concretes with lower coefficients. No relationship was found between resistance of concrete to temperature changes and differences between thermal coefficknts of aggregates and mortar.
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