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原文传递 Hot-Mix Asphalt Placement: Virginia's Move to a Two-Inch Drop-Off

题名：	Hot-Mix Asphalt Placement: Virginia's Move to a Two-Inch Drop-Off
作者：	Mokarem, D. W.
关键词：	Highway construction##Asphalt pavement##Paving##Pavement edge drop-off##Pavements##Hot mix asphalt pavement##Performance##Paving operations##Milling operations##Safety##Virginia Department of Transportation (VDOT)##
摘要：	In 2004, the Virginia Department of Transportation (VDOT) began examining the effects of allowing a 2-inch drop-off, rather than the specified 1.5-inch drop-off, between adjacent lanes. VDOT implemented a pilot program in its Northern Virginia District that gave paving contractors the option of not squaring up at the end of each shift on limited access roadways. This type of operation allowed the contractor to leave a milled section open to the traveling public and also to place an overlay in one lane but not the adjacent lane. The maximum allowable drop-off of the pavement in these instances was 2 inches. The purpose of this study was twofold. The first was to develop a functional performance specification for the milled surface exposed to traffic during paving operations on limited access roadways. This was done by measuring the milled surfaces on the roadways in the VDOT pilot program. The practices of other states regarding edge drop-offs were also investigated. The second and more important purpose was to investigate specific factors affecting paving and milling operations: safety, quality, productivity, and efficiency.
总页数：	42
报告类型：	科技报告