Content area
Full text
Received Jun 5, 2017; Accepted Oct 19, 2017
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
1. Introduction
Rutting prevention has become one of the most in-demand topics of study with more-extensive research on damage to asphalt pavement. Studies all over the world have established a variety of rutting test methods to analyze and evaluate the antirutting properties of asphalt mixtures. APA (Asphalt Pavement Analyzer) rutting test has gained much international attention in recent years for such advantages as the ability to simulate live load conditions. In 2001, NCAT (National Center for Asphalt Technology) evaluated the applicability of various methods for evaluating the antirutting performance, including APA, HWTD (Hamburg Wheel-tracking Device), FRT (French Pavement Rutting Tester), RLWT, and triaxial repeated load creep tests, and preferentially recommended APA rutting test. Subsequently, numbers of research have conducted the antirutting properties of asphalt mixtures by using APA test.
Xie et al. researched moisture susceptibility through APA and analyzed the results of water-submerged rut testing, from which they presented an index of water submergence stability to assess water resistance of different asphalt mixtures [1]. Han et al. investigated the effects of water on permanent deformation potential by using APA and indicated that APA testing form, preconditioning conditions, and the freezing and thawing cycle times are the main universal reasons that cause a greater extent of deformation in wet rut compared with dry rut [2]. Zhang et al. presented a rule of the effect of different size aggregates on the high-temperature performance of asphalt mixtures on the basis of APA tests and indicated a reasonable percentage of different size aggregates, which could help to design both skeleton and dense-construction asphalt mixtures [3]. Junbiao et al. used digital image-processing to analyze the loading modes of the RLWT (Rotary Loaded Wheel Tester) and APA rutting tests, by comparing the...