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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: Effect of Condensed Silica Fume and Fly Ash on Compressive Strength Development of Concrete
Author(s): Marit Ronne
Publication: Special Publication
Appears on pages(s): 175-190
Keywords: compressive strength; concretes; drying; fly ash; hardening; silica fume; Materials Research
Abstract:The effect of different curing conditions on the long-term compressive strength of concrete containing silica fume and fly ash was investigated. The project was carried out as a parallel test program at three different laboratories for a period of two years. Two mixes were chosen: one blended cement (MP30) containing 25 percent fly ash, and the other containing 25 percent fly ash and 10 percent silica fume. The cubes were exposed to six different curing conditions at different temperatures (20 to 70 C) and humidities (about 30 to 100 percent relative humidity). In one of the series, the cubes were allowed to dry on one side only. The compressive strength for both the cements containing fly ash and silica fume were sensitive to the early drying procedure. Good initial curing conditions in the first three days of curing gave an improvement in compressive strength compared to the samples dried immediately after demolding.
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