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原文传递 EVALUATION OF TEXTURAL RETENTION OF PAVEMENT SURFACE AGGREGATES.

题名：	EVALUATION OF TEXTURAL RETENTION OF PAVEMENT SURFACE AGGREGATES.
作者：	Crouch-LK; Gothard-JD; Head-G; Goodwin-WA
关键词：	AGGREGATE-CHARACTERISTICS; WEARING-COURSE; BITUMINOUS-SURFACING; SKID-RESISTANCE; SURFACE-TEXTURE; AGGREGATE-SHAPE; MICROTEXTURE-; PARTICLE-SHAPES; AGING-MATERIALS; TEST-METHODS; TESTING-EQUIPMENT; REPEATABILITY-; AGGREGATE-POLISHING; RESISTANCE-
摘要：	Skid resistance of bituminous surface courses is related to the components of the mixture and construction procedures. An important element of the mixture is the aggregate surface texture and shape. Aggregates for use in these wearing courses must retain sufficient microtexture over time to contribute to a safe, skid-resistant pavement for the motoring public. The Tennessee textural retention method (TTRM) is used to characterize the aggregate particle shape initially and at various aging intervals to predict the aggregate's ability to retain its microtexture. The TTRM uses single-size aggregate (6.35 to 9.52 mm), the Los Angeles abrasion device, and a modified version of the National Aggregate Association's Particle Shape Tester (ASTM C 1252) to provide particle shape and texture data. In a preliminary evaluation, the TTRM was able to discern two proven performers from several other siliceous limestones. The test method appears to have excellent repeatability and is virtually operator insensitive. The method may be helpful in identifying potential aggregates for use in bituminous surface courses by predicting their ability to resist the polishing action of traffic.
总页数：	Transportation Research Record. 1995. (1486) pp124-129 (2 Fig., 2 Tab., 4 Ref.)
报告类型：	科技报告