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原文传递 Long Term Validation of an Accelerated Polishing Test Procedure for HMA Pavements.

题名：	Long Term Validation of an Accelerated Polishing Test Procedure for HMA Pavements.
作者：	Liang, R. Y.
关键词：	Aggregates; Correlations; Friction; Hot Mix Asphalt; Implementation; Laboratory Tests; Maintenance; Monitoring; Ohio; Pavements; Performance Evaluation; Polishing; Roads; Safety; Skid Resistance; Surf
摘要：	The Ohio Department of Transportation (ODOT) has set strategic goals to improve driving safety by maintaining smooth pavement surfaces with high skid resistance. ODOT has taken the initiative to monitor pavement friction on Ohio roadways and remedy the pavement sections with low skid resistance. However, this is a passive and reactive approach toward the problem. A more proactive approach would be to test hot mix asphalt (HMA) in the laboratory during the mix design stage to ensure that the aggregates used will provide adequate friction over the life of the pavement. With the validity of a research-grade polishing machine established in a previous study, ODOT has initiated this project to conduct a long-term field study to collect field performance data over a longer time period. The research effort was aimed at further validating the applicability of the previously developed laboratory test protocol and acceptance criteria through a correlation and comparison study with long-term field performance data. This research has produced the following deliverables: (a) a new commercial grade accelerated polishing machine called The Polisher, (b) models for predicting the field performance of asphalt pavement friction under traffic, and (c) supplemental notes with draft specifications for polishing HMA samples and for testing friction properties. The commercial grade polishing machine and the supplemental notes were recommended for ODOT implementation.
报告类型：	科技报告