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http://dx.doi.org/10.14190/JRCR.2014.2.1.040

A Characteristics of Fly-ash Concrete Incorporating Tablet-shaped Accelerators in Cold Weather  

Lee, Yong-Soo (Department of Civil & Environmental Engineering, Hanyang University)
Ryou, Jae-Suk (Department of Civil & Environmental Engineering, Hanyang University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.2, no.1, 2014 , pp. 40-45 More about this Journal
Abstract
Although the accelerators are used at the early stage to control setting-time and strength of concrete when cold-weather concrete is utilized, no security of workability occurs because the early hydration makes them react rapidly. Therefore, the tablet used in previous study is applied in this study. In particular, because a small amount of fly-ash being replaced in cold weather concrete of domestic, fly-ash concrete incorporating the tablet is discussed in workability by elapsed time, early strength to ensure the development of adequate strength, and freezing-thawing resistance. As a result, both 0.5 and 1.0% tablets were found to be superior. Thus, it was verified in cold weather concrete incorporating fly-ash that workability can be secured, as well as the development of early strength to prevent early frost.
Keywords
Cold weather concrete; Fly-ash; Tablet; Accelerator; Early strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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