Freeze-Thaw Durability of Portland Cement Concrete Subjected to Aircraft Deicer

Abstract:

Influence of glycol, which is the main composition of the most frequently used aircraft dicer, on the freeze-thaw durability of Portland cement concrete were investigated. Freeze-thaw durability of Portland cement concrete was tested by accelerated freeze-thaw test. Four kinds of solutions, namely tap water, 3.5% NaCl solution, glycol solutions and a LBR-A type commercial aircraft deicer were employed to be the freezing-thawing mediums. Results show that freeze-thaw durability of concrete exposed to glycol solutions is closely related to the solution concentrations. Failure of concretes exposed to 3.5% glycol solution is similar to that of those exposed 3.5% NaCl solution, which are attributed to serious surface scaling. While damage of concrete exposed to 12.5% and 25% glycol solutions are postponed, and the durability of concrete are increased. Compared with glycol solution, the commercial aircraft deicer demonstrated much more negative effect to concrete freeze-thaw durability, and the degree even exceeds 3.5% NaCl solution. Consequently, the commercial aircraft deicer is not a kind of environmental friendly deicer as usually considered.

• Periodical: Advanced Materials Research (Volumes 152-153)
• Pages: 1856-1861
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.152-153.1856
• Online since: October 2010
• Authors: Haiyan Ma, Hongfa Yu, Wen Tao Cao, Kang Bai, Peng Zhou, Li Juan Han
• Keywords: Aircraft Deicer, Freeze-Thaw Cycle, Freeze-Thaw Durability, Portland Cement Concrete, Relative Dynamic Elastic Modulu

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