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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: Shrinkage and Creep of Concrete Containing 50 Percent Lignite Fly Ash at Different Stress-Strength Ratios
Author(s): K. W. Nasser and A. A. Al-Manaseer
Publication: Special Publication
Appears on pages(s): 433-448
Keywords: age-strength relation; concretes; creep properties;
creep tests; curing; fly ash; shrinkage.
Abstract:A study was conducted to find the shrinkage and creep of sealed and unsealed concrete made with Type I cement and containing 50% Saskatchewan fly ash. The tests were carried out at different stress/strength ratios and creep was measured at those ratios of: 10, 20, 30, 40, 50, and 60% and for a maximum period of 112 days. All the tests were carried out at room temperature of 70°F (21.4OC). Experimental results showed that creep of concrete made with 50% fly ash was a linear function of stress/strength ratio. The shrinkage of this concrete was about 11% higher than that of plain concrete, while its creep was lower by about 13% for the unsealed specimens and 39% for the sealed ones. In addition, the ratio of creep values of unsealed/sealed concrete was about 2.44 for plain concrete and 3.67 for concrete with 50% fly ash.
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