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Properties of early-stage concrete with setting-accelerating tablet in cold weather

Title
Properties of early-stage concrete with setting-accelerating tablet in cold weather
Author
유재석
Keywords
Tablet; Accelerator; Early strength; Workability; Frost resistance; Cold weather
Issue Date
2012-01
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Materials Science and Engineering: A, Vol.532, No.- [2012], p84-90
Abstract
Various methods are used at the early stages to control setting-time and strength of concrete, when cold-weather concrete is utilized. Among these methods is one that involves the use of an accelerator. Although economical, accelerators have difficulty securing workability because their early hydration makes them react rapidly. Therefore, how to make a tablet for cold-weather concrete, as with the existing medicines and foods, is discussed in this study, including the following items: mortar setting-time, workability by elapsed time, early strength to assure the development of adequate strength, and freezing–thawing resistance. As a result, both the 0.5 and 1.0% tablets were found to be superior. Thus, workability can be secured, as well as the development of early strength to prevent early frost.
URI
http://www.sciencedirect.com/science/article/pii/S0921509311011683?via%3Dihubhttp://hdl.handle.net/20.500.11754/67562
ISSN
0921-5093
DOI
10.1016/j.msea.2011.10.066
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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