详情

原文传递 USE OF GROUND TIRE RUBBER IN ASPHALT CONCRETE PAVEMENTS--A DESIGN AND PERFORMANCE EVALUATION.

题名：	USE OF GROUND TIRE RUBBER IN ASPHALT CONCRETE PAVEMENTS--A DESIGN AND PERFORMANCE EVALUATION.
作者：	Malpass-GA; Khosla-NP
关键词：	GROUND-RUBBER; ASPHALTIC-CONCRETE; WET-PROCESS; DRY-PROCESS; MARSHALL-MIX-DESIGN-METHOD; GYRATORY-TESTS; MODULUS-OF-RESILIENCE; CREEP-; FATIGUE-MATERIALS; ASPHALT-CONTENT; COMPUTER-MODELS; PERFORMANCE-PREDICTION; SERVICE-LIFE
摘要：	North Carolina State University, with support from the North Carolina Department of Transportation, has explored the design and performance of two types of rubberized pavements: ground rubber mixed with an asphalt binder at elevated temperatures (wet process) and rubber mixed with a gap-graded aggregate before the addition of asphalt cement (dry process). The wet process mixtures contained 11% ground tire rubber by weight of the binder. The dry process mixtures incorporated 2% ground tire rubber by weight of the aggregate. The Marshall and the Corps of Engineers gyratory testing machine (GTM) procedures were used to design conventional dry process and wet process surface course mixtures. These mixtures were tested with respect to resilient modulus, creep, and fatigue to obtain input parameters for a computerized performance prediction model. The addition of rubber was found to increase asphalt demand by 0.5% for the dry process and 1.5% for the wet process. The performance model estimated that the new rubberized pavement systems would have shorter service lives compared to a new conventional pavement system. When the wet process mixture was used to overlay a distressed conventional system, it performed as well as an equal thickness of a conventional overlay.
总页数：	Transportation Research Record. 1995. (1515) pp11-17 (9 Fig., 7 Tab., 8 Ref.)
报告类型：	科技报告