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原文传递 Development of Standardized Test Procedures for Evaluating Deicing Chemicals. Final rept.

题名：	Development of Standardized Test Procedures for Evaluating Deicing Chemicals. Final rept.
作者：	Akin-M.; Shi-X.
关键词：	Standardized-tests; Deicing-chemicals; Performance-; Laboratory-evaluation.;Roadways-; Winter-maintenance.
摘要：	This project aims to develop and/or identify a series of standard laboratory testing procedures and ranges that can be used to evaluate the performance of deicing chemicals, additives and mixtures used on roadways and other transportation facilities. A literature review and survey were conducted to provide the scope and direction for laboratory tests. The results of the survey indicate relatively modest implementation of the deicer performance tests developed under the Strategic Highway Research Program (SHRP) and ASTM freezing point test. As such, several test methods were experimented for the purpose of refining or developing a promising test protocol, including: Differential Scanning Calorimetry (DSC) thermogram test for liquid deicers, Modified SHRP Ice Melting Test for solid and liquid deicers, Modified SHRP Ice Penetration Test for solid and liquid deicers, and a modified ice undercutting test developed by Minnesota DOT for solid and liquid deicers. These tests shed light on the complexity and challenges in evaluating various deicers, especially the poor reliability inherent in conventional test methods. The DSC-based method was demonstrated to be very reproducible for each deicer at a given dilution rate and heating rate, and thus may serve as a fingerprint tool for quality assurance of deicers. The DSC data also showed strong correlation with the Modified SHRP Ice Melting Test data, which hold the promise of establishing the DSC-based method for evaluating the performance of liquid deicers (both in terms of characteristic temperature and ice melting capacity). The Modified SHRP Ice Melting Test incorporates a control substance and some checks to determine acceptability of the data. While not essential, a round robin test involving multiple laboratories is recommended to assess the between-laboratory variability of these improved or newly developed tests for deicing chemicals.
报告类型：	科技报告