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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: Performance of High Alumina Cement Concrete Stored in Water and Dry Heat at 25, 35, and 50 C
Author(s): D. H. H. Quon and V. M. Malhotra
Publication: Journal Proceedings
Appears on pages(s): 180-183
Keywords: age-strength relation; compression tests; compressive strength; concretes;
curing; differential thermal analysis; high alumina cements; moist curing;
water-cement ratio; x-ray diffraction.
Abstract:Continuing work undertaken in 1975 at CANMET a series of 0.056 m3 concrete mixes was made, and 30 cylinders cast from each mix. After initial moist curing, one-third were subject to standard moist curing, one-third cured in water, and one-third in dry heat. A similar procedure was repeated at higher temperatures. Weights and pulse velocity of the cylinders were determined, and they were examined by x-ray diffraction and differential thermal analysis. High alumina cement concretes moist cured at 21 C gain in strength up to one year, regardless of water-cement ratio. But curing at 25 and 35 C results in strength loss with age, and this loss increases with increasing water-cement ratio. At 50 C exposure, the change in strength with age depends on the water-cement ratio. At a water-cement ratio of 0.31, an insignificant drop in strength occurs at early ages, despite the high degree of conversion. Strength then increases with age and reaches 125 percent of one-day strength at one-year, suggesting a means by which very high strengths can be achieved and maintained at least up to one year.
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