Abstract: This paper describes how the development of air-entrained concrete in the mid-1930s was one of the greatest advances in concrete technology. Air-entrained concrete contains small and stable air bubbles that are uniformly distributed throughout the cement paste. Air-entrained concrete is produced through the use of either air-entraining portland cement or air-entraining admixtures. Benefits of entrained air are apparent in both the fresh and hardened concrete. The most important benefit in concrete is the improved freeze-thaw resistance of hardened concrete that is exposed to freezing and to deicing chemicals while critically saturated. In fresh concrete, workability is improved and bleeding is reduced.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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Cited By Count: 2
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