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Title |
Evaluation of the Properties of an Environment-Friendly De-icing Agent Based on Industrial By-Products
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Authors |
허형석(Hyung-Seok Heo) ; 이병재(Byung-Jae Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.6.132 |
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Keywords |
친환경제설제 ; NaCl ; 폐아세트산 ; 칼슘부산물 Ultra rapid hardening cement ; Grout ; Phase change material ; Hydration heat control |
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Abstract |
A huge amount of de-icing agent is sprayed during winter to promote traffic safety in cold regions, and the quantity of de-icing agent sprayed has increased each year. The main ingredients in commonly used de-icing agents are chlorides, such as calcium chloride(CaCl2) and sodium chloride(NaCl). While calcium chloride is mostly used in Korea and sodium chloride is usually used in the U.S. and Japan, all de-icing agents include chloride ions. The chlorides included in sprayed calcium chloride-based de-icing agents have severe adverse effects, including the corrosion of reinforcing steels through salt damage by infiltrating into road structures, reduced structural performance of pavement or damage to bridge structures, and surface scaling, in combination with freezing damage in winter, as well as water pollution. In addition, the deterioration of paved concrete road surface that occurs after the use of calcium chloride-based de-icing agent accelerates the development of visual problems with traffic structures. Therefore, the present study was performed to prepare an environment-friendly liquid de-icing agent through a reaction between waste organic acids and calcium-based by-products, which are industrial by-products, and to analyze the properties of the de-icing agent in order to evaluate its applicability to road facilities.
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