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原文传递 DETERMINATION OF COMPACTIVE EFFORT TO DUPLICATE PAVEMENT VOIDS FOR CORPS OF ENGINEERS GYRATORY TESTING MACHINE.

题名：	DETERMINATION OF COMPACTIVE EFFORT TO DUPLICATE PAVEMENT VOIDS FOR CORPS OF ENGINEERS GYRATORY TESTING MACHINE.
作者：	Maupin-GW Jr.
关键词：	GYRATORY-TESTING-MACHINE; ASPHALTIC-MIXTURES; LABORATORY-COMPACTION; VOIDS-; COMPARISONS-; FIELD-MEASUREMENTS; REGRESSION-ANALYSIS; PREDICTIONS-; CORRELATIONS-
摘要：	The Corps of Engineers gyratory testing machine (GTM) has been used by various agencies to design and test asphalt mixes. Material properties such as shear strength and strain are measured during the compaction process, but a compaction process duplicating void levels in the pavement after traffic has not been clearly defined. The intent of this project was to determine the laboratory compactive effort for the GTM that duplicates the voids in pavement after it has been exposed to traffic. Samples of mix were obtained during construction of 10 field projects and tested in the laboratory with six different compactive efforts using various angles of gyration and vertical pressures. Voids were also measured in pavements immediately after construction and after several years of exposure to traffic. Regressions were then developed to allow the prediction of pavement voids from the voids obtained by the laboratory compaction procedures. A high correlation between voids obtained in the laboratory and pavement voids after several years of traffic was obtained with the GTM at two combinations of gyratory angle and vertical pressure; however, the degree of correlation was highly dependent on the inclusion of the postconstruction voids.
总页数：	Transportation Research Record. 1995. (1492) pp12-17 (3 Fig., 3 Tab., 5 Ref.)
报告类型：	科技报告