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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: Fifty Year Properties of Concrete
Author(s): George W. Washa and Kurt F. Wendt
Publication: Journal Proceedings
Appears on pages(s): 20-28
Keywords: aggregates: compressive strength: concrete durability; curing: density (mass/volume] : flexural strength; mechanical properties: physical properties; secant modulus;tensile strength: tests; volume change.
Abstract:Compressive strength, unit weight, and volume changes of concrete for ages up to 50 years have been determined. Variables incuded are types of cement and coarse aggregate, mix proportions, consistency, methods of placement, and storage conditions. Over 2500 concrete cylinders, I32 concrete expansion prisms, and severa thousand mortar cylinders and briquets were made in 1910, 1923, and I937 for this program. Earlier reports on them tests were published in 1931, 1943, and 1961. Under outdoor storage in Madison the compressrve strength of concrete made with coarsely ground cements having high C2S contents generally increased as the log of the age out to 50 years, but concrete made with finer cements having relatively low C2S contents appeared to reach maximum strength at ages between 10 to 25 years and showed some retrogression thereafter.
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