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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: Creep of Concrete Containing
Fly Ash and Superplasticize at Different Stress/Strength Ratios
Author(s): K. W. Nasser and A. A. AI-Manaseer
Publication: Journal Proceedings
Appears on pages(s): 668-673
Keywords: admixtures; age-strength relation; concretes;creep properties; creep tests ; curing; fly ash; plasticizers; sealing; shrinkage.
Abstract:Investigates the influence of different stress/strength ratios on the creep of unsealed and sealed concrete containing Saskatchewan lignite fly ash and admixtures of water reducer, air entrainment, and superplasticizer. The results were compared with a similar mix that did not contain any admixtures except air entrainment. The creep strain was measured at different stress/strength ratios of IO, 20, 30, 40, 50, and 60 percent, for a maximum period of 112 days. AN the tests were carried out at room temperature of 70 F (21.1 C). Creep was found to vary linearly with logarithm of time for both sealed and unsealed concrete. Also, creep was found to be a linear function of stress/strength ratio between 10 and 60percenf, and creep of unsealed concrete with admixtures was about 72 percent larger than that of plain concrete. Similarly, the creep of unsealed concrete with admixtures was about 4.21 times larger than the creep of the same sealed concrete.
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