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原文传递 USE OF LPC WHEEL-TRACKING RUTTING TESTER TO SELECT ASPHALT PAVEMENTS RESISTANT TO RUTTING.

题名：	USE OF LPC WHEEL-TRACKING RUTTING TESTER TO SELECT ASPHALT PAVEMENTS RESISTANT TO RUTTING.
作者：	Brosseaud-Y; Delorme-J-L; Hiernaux-R
关键词：	FRENCH-TECHNOLOGY; ASPHALT-PAVEMENTS; RUTTING-; RESISTANCE-; TESTING-EQUIPMENT; MATERIAL-PROPERTIES; SPECIFICATIONS-; QUALITY-CONTROL; LABORATORY-TESTS; REPEATABILITY-; RUT-DEPTH; PREDICTIONS-; MATHEMATICAL-MODELS; FINITE-ELEMENT-ANALYSIS
摘要：	The last survey carried out in 1991 on the French road network shows that, for the last 15 years, the roads have behaved very well as far as surface rutting is concerned. Less than 1.5% of the motorway network is affected by rutting defects. The phenomenon is limited and confined to particular areas. The explanation of this favorable situation lies in the awareness as early as 1970 of the rutting problem due to heavy traffic, which led to the design of a laboratory test, the Laboratoires des Ponts et Chaussees (LPC) wheel-tracking rutting tester. This test, whose mechanical and dynamical conditions are as close as possible to those generated in the pavement, is performed at a rather high temperature (60 deg C). The test has allowed the determination of different types of material behaviors and the definition of limit values (used in standards) allowing a good quality of the road. These specifications have been confirmed by correspondence between performance in the wheel-tracking rutting test and behavior on site. Moreover, the influence of test parameters and the mixture on the stability level of the mixes has been estimated. Interlaboratory tests, carried out in 1992 in conformity with ISO Standard 5725, confirmed the first estimates obtained in pretests, that is, very good repeatability values. New applications of the test have been used for the study of special asphalt mixes, study of the behavior of waterproofing systems for bridge decks, and analysis of the evolution of the macrotexture of very thin surface layers (20 or 30 mm). However, because of a significant increase in heavy traffic, new studies will be performed this year on the LPC circular fatigue test track in Nantes, France. At the same time, comparison studies on test devices and rutting depth prediction calculation models will be made, particularly on the finite element computation model CASTOR.
总页数：	Transportation Research Record. 1993. (1384) pp59-68 (2 Phot., 4 Fig., 1 Tab., 8 Ref.)
报告类型：	科技报告