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原文传递 ESTIMATING PERMEABILITY OF ASPHALT-TREATED BASES.

题名：	ESTIMATING PERMEABILITY OF ASPHALT-TREATED BASES.
作者：	Lindly-JK; Elsayed-AS
关键词：	BASE-COURSES; ASPHALT-; STABILIZATION-; AGGREGATE-GRADATION; PERMEABILITY-; LABORATORY-TESTS; TEST-RESULTS; STATISTICAL-ANALYSIS; CRUSHED-LIMESTONE; CRUSHED-GRANITE; RIVER-GRAVEL; MULTIPLE-REGRESSION; EQUATIONS-; PREDICTIONS-
摘要：	This report describes laboratory testing and statistical analysis of the resulting data to determine the effects of aggregate gradation and percent asphalt stabilization on the permeability of asphalt-treated roadway base layers. Three different types of aggregates were tested in the study. They are crushed limestone, crushed granite, and uncrushed river gravel. A top size of 38 mm (1.5 in.) was used for all gradations. Asphalt cement (AC-20 grade) at 2% and 3% was used to stabilize the aggregates. A total of 60 permeability tests were performed using a 15.2 cm (6-in.) diameter permeameter. A statistical method was used to arrive at a first-order multiple regression equation to predict the coefficient of permeability of asphalt-treated bases in the range of 0.2-0.7 cm/sec (500-2,000 ft/day) using the percentage of air voids in the sample, the percentage of asphalt cement used, and the percent by weight of materials that pass the 2.36-mm (No. 8) sieve.
总页数：	Transportation Research Record. 1995. (1504) pp103-111 (5 Fig., 8 Tab., 17 Ref.)
报告类型：	科技报告