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原文传递 Evaluation of Thermoplastic Marking Materials.

题名：	Evaluation of Thermoplastic Marking Materials.
作者：	cyrus, h. previti, a. j.
关键词：	maintenance, life cycle costs, data collection, evaluation equipment, baseline test, chromaticity test, friction test, paints, coatings, instruments
摘要：	Due to the harsh conditions of airport environments, frequent repainting of existing waterborne pavement markings is required. This painting is expensive and affects life-cycle costs. A thermoplastic marking material has been identified as an alternative to the existing waterborne material. The purpose of this research effort was to determine if this thermoplastic marking material is as effective as the current waterborne material in terms of its retro-reflectivity, chromaticity, friction properties, and its adherence to the airport pavement surface. Two types of thermoplastic materials were applied on asphalt and concrete surfaces at the Federal Aviation Administration William J. Hughes Technical Center and were evaluated for 1 year starting in June 2006. These materials were also applied on concrete pavement surfaces at the Newark Liberty International Airport and evaluated for 1 year starting in August 2006. One thermoplastic material was 60-mil thick with Type I and III beads and was applied on a heated surface; the other material was 90-mil thick with Type I and IV beads and was applied on cold surface. Retro-reflectivity was measured using a retro-reflectometer; a spectrophotometer was used to measure chromaticity, a Dyna-Meter Pull-Off tester was used to measure adherence strength, and a Saab Surface Friction Tester was used to measure friction properties. Most measurements were taken on a monthly basis. / NOTE: Technical note. / Supplementary Notes: Prepared in cooperation with Hi-Tec Systems, Inc., Egg Harbor Township, NJ. 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：	u0821；91p
报告类型：	科技报告