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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: Freezing and Thawing: Comparison Between Non-Air-Entrained and Air-Entrained High-Strength Concrete
Author(s): Y. LI, B. W. Langan, and M. A. Ward
Publication: Special Publication
Appears on pages(s): 545-560
Keywords: admixtures; air-entrained concretes; deicing; freeze-thaw durability; high-strength concretes; mortars (material); nonair-entrained concretes; pastes; voids; Materials Research
Abstract:The freezing and thawing (F/T) durability of nonair-entrained cement pastes and mortars was evaluated by measuring the decrease in compressive strength. At the water-cementitious ratio (w/c) of 0.24, both the paste and mortar showed excellent F/T resistance at 0, 5, and 10 percent silica fume levels. When the w/c was higher than 0.24, the paste and mortar durability were significantly reduced. The F/T durability of nonair-entrained concrete was determined according to ASTM C 666, Procedure A. At a w/c of 0.24, the nonair-entrained concretes were F/T-durable regardless of the silica fume and total cementitious content, but concretes with a w/c greater than 0.24 had better overall durability. The salt-scaling of nonair-entrained concrete at different w/c was tested according to ASTM C 672. No scaling was found in the concrete at w/c of 0.24 and 0.27. The results from the paste, mortar, and concrete showed that w/c was the most important factor in evaluating F/T resistance of these concretes.
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