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原文传递 LINEAR TRACKING PERFORMANCE TESTS ON FULL-DEPTH ASPHALT PAVEMENT.

题名：	LINEAR TRACKING PERFORMANCE TESTS ON FULL-DEPTH ASPHALT PAVEMENT.
作者：	Groenendijk-J; Vogelzang-CH; Miradi-A; Molenaar-AAA; Dohmen-LJM
关键词：	ASPHALT-PAVEMENTS; REPETITIVE-LOADING; LINEAR-TRACKING-DEVICE; WIDE-BASE-TIRES; ACCELERATED-TRAFFIC-TESTS; STRAINS-; TEMPERATURE-; RUTTING-; PAVEMENT-CRACKING; FALLING-WEIGHT-DEFLECTOMETERS; FULL-DEPTH-ASPHALT-PAVEMENT; PAVEMENT-PERFORMANCE; DATA-ANALYSIS; PAVEMENT-LIFE; STIFFNESS-; PAVEMENT-DISTRESS; SURFACE-CRACKS
摘要：	A 0.15-m-thick gravel asphalt concrete (AC) pavement on a sand subgrade was loaded with 4 million repetitions of a 75-kN super-single wheel load using the linear tracking device (LINTRACK) heavy-traffic simulator. Frequent measurements were carried out, including asphalt strain, temperature, rutting, cracking, and falling weight deflectometer measurements, to investigate the performance of full-depth asphalt pavements. The subsequent data analysis indicated that the life of the tested asphalt pavement, according to the Dutch fatigue-design criterion (halving the asphalt stiffness), was 2 to 4 times longer than predictions based on the pavement-design method of the Road and Hydraulic Engineering Division (RHED) of the Dutch Ministry of Transport, Public Works and Water Management. Thus, this method does not give an unsafe design. The analysis also indicated that halving of the asphalt stiffness, implying structural distress, occurred before any cracking was visible at the pavement surface. Almost all visible cracking occurring later in this test pavement consisted of surface cracking instead of structural cracking. Therefore, the structural distress did not grow upward to form the visible cracks at the surface, but the latter formed independently. The same was observed on Dutch highways, which are much thicker. These conclusions are based on only one test section, although supplemented with extensive materials testing, and verification with other tests is necessary.
总页数：	Transportation Research Record. 1997. (1570) pp39-47 (10 Fig., 2 Tab., 12 Ref.)
报告类型：	科技报告