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原文传递 Anti-Icing Pavement Coating Study at Chicago O'Hare International Airport.

题名：	Anti-Icing Pavement Coating Study at Chicago O'Hare International Airport.
作者：	carroll, n. m. dempsey, b. j.
关键词：	pavement coating, epoxy adhesive, aggregate chips
摘要：	Airports generally use two common strategies for keeping snow and ice buildup on aircraft movement areas to a minimum. The practice of anti-icing is primarily preventive, where the formation or development of bonded snow and ice is minimized by timely applications of a chemical freezing-point depressant (FPD) in advance and sometimes during each winter precipitation event. Deicing on the other hand is a primarily reactive practice because the FPD is not applied until snow or ice has already accumulated and formed a bond to the pavement surface. There are advantages and disadvantages to both practices. Anti-icing has the potential of lower costs due to less chemical being used than in deicing; however, a more systematic approach is often needed. Deicing may demand less upfront planning but usually requires a larger quantity of FPD to work its way through the snow pack to reach the snow/pavement interface and destroy or weaken the bond. A promising new pavement coating claims to offer unique anti-icing characteristics that have the potential to reduce the costs and environmental impact associated with airport pavement anti-icing. The coating claims to require the application of less quantity of FPD chemical over multiple winter storm events compared to amounts necessary for typical airport pavement surfaces. The coating is a permanent treatment consisting of epoxy adhesive and porous aggregate chips applied to existing pavement surfaces. Additionally, the durability and friction characteristics of the coating are claimed to be comparable to typical airport pavements. The purpose of this study was to evaluate the effectiveness of the anti-icing coating in terms of its anti-icing performance compared to adjacent pavement surfaces that did not have the coating. In addition, the durability and friction characteristics of the coating were measured and observed over the course of the evaluation. / NOTE: Final rept. / Supplementary Notes: Sponsored by Federal Aviation Administration, Washington, DC. Aviation Research and Development. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0715；39p
报告类型：	科技报告