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原文传递 WATER SENSITIVITY OF ASPHALT-AGGREGATE MIXES: TEST SELECTION.

题名：	WATER SENSITIVITY OF ASPHALT-AGGREGATE MIXES: TEST SELECTION.
作者：	Terrel-RL; Al-Swailmi-S
关键词：	ASPHALT-CONCRETE; PERFORMANCE-TESTING; WATERTIGHTNESS-; SENSITIVITY-ANALYSIS; PERMEABILITY-; DAMAGE-CONTROL; STRATEGIC-HIGHWAY-RESEARCH-PROGRAM; METHODOLOGY-
摘要：	The research presented in this report was conducted to identify the important factors influencing the water sensitivity of asphalt paving mixtures, and to develop a test method to evaluate water sensitivity of asphalt concrete mixtures for mix design. The test method was to be performance related. A review of current procedures revealed that no single method was suitable for evaluation and related to field performance. Based on a hypothesis that air voids in the mixture may be the major source and cause of water damage, a test system was developed to evaluate the major factors that influence water sensitivity. The Environmental Conditioning System (ECS) was used to develop a test procedure that includes specimen preparation; measurement of permeability using air, water, or both; vacuum wetting; cycling at various temperatures; and continuous repeated loading while monitoring resilient modulus after each conditioning cycle. Results using four core mixtures indicated that the ECS can distinguish different materials and their relative water susceptibility. A tentative test procedure is recommended.
总页数：	1994/06. pp183 (62 Fig., 44 Tab., 49 Ref., 1 App.)
报告类型：	科技报告