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原文传递 Effect of Material Transfer Devices on HMA Material Uniformity and Ride Quality. Final rept.

题名：	Effect of Material Transfer Devices on HMA Material Uniformity and Ride Quality. Final rept.
作者：	HARRIS, K. B.; PARKER, F.; STROUP-GARDINER, M.; WILLIAMS, B.
关键词：	Pavements-; Hot-mix-asphalts.;Research-program; Data-collection; Temperature-measurements; Texture-measurements; Segregation-; Surface-textures; Alabama-.
摘要：	Alabama Department of Transportation (ALDOT) recently started to require contractors to use a material transfer device (MTD) in the construction of hot mix asphalt (HMA) pavements in order to minimize segregation. While some research has been done that indicates that the use of a MTD will minimize both temperature and gradation segregation of the mix components once the mix leaves the HMA plant, no research has been done to evaluate the impact of a MTD on initial ride quality. The objectives of this research were to document the influence of MTDs on improving both mix uniformity (i.e., lack of segregation) and initial ride quality. The scope of this project included the evaluation of four Alabama HMA projects constructed during the 2001 and 2002 paving seasons. On three of the four projects, both the binder and surface courses were evaluated. Areas of non-uniformity were identified during construction using an infrared camera, with areas having a temperature difference of more than 19 degrees being classified as non-uniform. Both ride quality and uniformity after construction was completed and was identified using data from the Auburn University Roadware inertial profiler.
报告类型：	科技报告