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原文传递 SUMMARY REPORT ON LOW TEMPERATURE AND THERMAL FATIGUE CRACKING.

题名：	SUMMARY REPORT ON LOW TEMPERATURE AND THERMAL FATIGUE CRACKING.
作者：	Vinson-TS; Janoo-VC; Haas-RCG
关键词：	LOW-TEMPERATURE; FATIGUE-; THERMAL-FRACTURE; ENGINEERING-PROPERTIES; ASPHALTS-; AGGREGATE-; TESTING-; PREDICTION-; STRATEGIC-HIGHWAY-RESEARCH-PROGRAM; FIELD-STUDIES; MODEL-; AGING-; MOISTURE-CONDITIONS
摘要：	Under a long term research program to develop test methods which are suitable to accurately and reliably characterize the engineering properties of asphalt-aggregate mixtures, an exhaustive literature review and analysis of responses to a survey questionnaire was conducted to identify test methods that are currently used to predict low temperature and thermal fatigue cracking in asphalt concrete pavements. Eight test systems/methods were identified and evaluated in terms of the following criteria: simulation of field conditions; application of test results to mechanistic models; suitability for aging and moisture conditioning; potential to accommodate large stone mixes; ease of conduct; cost of equipment. It was fouund that four test systems/methods warranted further consideration in a laboratory program as follows: direct tension-constant rate extension test; thermal stress restrained specimen test; C*-line integral test; and coefficient of thermal expansion contraction test. A test program is identified which should be conducted to provide a preliminary evaluation of the availability of selected test systems/methods (1) for standardization, and (2) to provide input parameters to mechanistic models for low temperature and thermal fatigue cracking.
总页数：	1989/06. pp83 (Figs., Tabs., Refs.)
报告类型：	科技报告