详情

原文传递 PRECISIONS OF FLAT AND ELONGATED PARTICLE TESTS: ASTM D4791 AND VDG-40 VIDEOGRADER.

题名：	PRECISIONS OF FLAT AND ELONGATED PARTICLE TESTS: ASTM D4791 AND VDG-40 VIDEOGRADER.
作者：	Prowell-BD; Weingart-R
关键词：	AGGREGATES-; PRECISION-; SHAPE-; TEST-PROCEDURES; VIDEOGRADER-
摘要：	The design procedures for Superpave and stone-matrix asphalt mixtures emphasize the importance of aggregate shape. The current test procedure for characterization of aggregate shape, ASTM D4791, lacks a precision statement and is extremely time-consuming. A round-robin analysis was conducted with 15 laboratories, five materials, and two replicates to determine a precision statement for ASTM D4791. The results from the round-robin analysis, and for two additional materials obtained by the current procedure, were compared with results from the VDG-40 videograder, a promising automated device for measurement of aggregate shape. Although a correlation was indicated, further research is needed to relate the measurements of aggregate shape obtained by both tests to hot-mix asphalt performance.
总页数：	Transportation Research Record. 1999. (1673) pp73-80 (1 Phot., 7 Fig., 7 Tab., 11 Ref.)
报告类型：	科技报告