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原文传递 SUMMARY REPORT ON AGING OF ASPHALT-AGGREGATE SYSTEMS.

题名：	SUMMARY REPORT ON AGING OF ASPHALT-AGGREGATE SYSTEMS.
作者：	Bell-CA
关键词：	AGING-; AGGREGATE-; ASPHALTIC-MIXTURES; RESEARCH-; STATE-OF-THE-ART-STUDIES; BINDER-; LABORATORY-TESTS; FIELD-PERFORMANCE; HEATING-; OXIDATION-; DUCTILITY-TESTS; DYNAMIC-MODULUS; INDIRECT-TENSILE-TEST; ASPHALTS-
摘要：	This is a report on the state of the art of research on the phenomenon of the aging of asphalt-aggregate mixtures. Compared to research on the aging of asphalt cement, there has been little research on the aging of asphalt mixtures. Binder studies are considered as well as mixture sutdies, the relationship between laboratory aging tests and field performance, and the relationship between chemical composition and field performance. Recommendations are made for aging procedures which show promise for laboratory investigation. Test methods to evaluate aging are also considered. It is noted that extended heating procedures show the most promise for short-term aging and pressure oxidation and/or extended heating the most promise for long-term aging. Such procedures are also considered for long-term aging, together with oxidation techniques. Promising test methods to evaluate the effects of aging of mixtures include: resilient modulus, indirect tensile test, and the dynamic modulus test. Tests on recovered asphalt will also be necessary. Microviscosity and ductility tests will be considered together with chemical fractionation tests.
总页数：	1989/11/01. V. pp121 (Figs., Tabs., Refs., 3 App.)
报告类型：	科技报告