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http://dx.doi.org/10.14346/JKOSOS.2015.30.3.59

The Effective Control of Hot Weather Concreting by Optimum Mineral and Chemical Admixtures  

Lee, Dongyule (Department of Safety Engineering, Incheon National University)
Ham, Suyun (Department of Civil and Environmental Engineering, The University of Illinois at Urbana Champaign)
Oh, Taekeun (Department of Safety Engineering, Incheon National University)
Publication Information
Journal of the Korean Society of Safety / v.30, no.3, 2015 , pp. 59-66 More about this Journal
Abstract
The undesirable effects of elevated external temperatures at placement on the properties of the fresh and hardened concrete are discussed briefly, and the possible use of the mineral admixtures to mitigate them and the association with water-reducing and retarding admixtures in terms of the mix design which are critical for minimizing slump loss and entrained air loss are examined in this study. To investigate the effects of such the mineral and chemical admixtures on the fresh and hardened properties of concrete exposed to high temperature, a series of concrete mixtures subjected to the high temperature were carried out and then fresh and hardened properties of the mixtures were analyzed and evaluated. Based on the results, new guide lines concerning the appropriate admixtures for hot weather are suggested.
Keywords
hot weather concrete; mineral admixtures; chemical admixtures; fresh and hardened concrete property; mix design;
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