Test evaluation of rutting performance indicators of asphalt mixtures
Test evaluation of rutting performance indicators of asphalt mixtures
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DOI：
10.1016/j.conbuildmat.2017.07.164
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发表时间：
2017-11-30
影响因子：
7.4
通讯作者：
Wu, Shaopeng
中科院分区：
文献类型：
--
作者：
Javilla, Barugahare;Fang, Hao;Wu, Shaopeng
利用AC-13和AC-20沥青混合料车辙试验结果对沥青混合料车辙指标进行了评价。2520个循环的短期车辙周期可以足够模拟重载交通和预测长期车辙。二级车辙指标的车辙相关系数高于一级车辙指标（PRBI）。PRBI的可靠性表明，混合料可以表征的基础上的主要车辙。在2个周期的车辙可以用于快速车辙预测，但由于最早记录的周期是2，它被假设，即使是一个周期也可以同样重要。通过对再生热拌沥青混合料性能的验证，认为A/C指数、复合稳定度指数和剪切指数是最可靠的评价指标。然而，只有A/C指数可以可靠地筛选出具有几乎相同的二次车辙率的混合料。它被认为是最好的指标，它也可以评估间接车辙指标的性能。其极限配合比设计值可以确定和验证。(C)2017爱思唯尔有限公司版权所有
Rutting indicators of asphalt mixtures were evaluated using wheel tracking testing results of AC-13 and AC-20 asphalt mixtures. A short term rutting period of 2520 cycles could be adequate for simulating heavy traffic and for prediction of long term rutting. Secondary rutting based indicators had higher rutting correlation coefficients than primary rutting based indicators (PRBI). The reliability of PRBI indicated that mixtures could be characterised based on primary rutting. The rutting at 2 cycles could be used for quick rutting prediction, but since the earliest recorded cycle was 2, it was hypothesised that even one cycle could as well be equally significant. A/C index, complex stability index and shear index were the most reliable indicators based on validating results of recycled hot mix asphalt mixtures. However, only A/C index could reliably screen mixtures with nearly the same secondary rutting rates. It was considered the best indicator, which could as well assess the performance of indirect rutting indicators. Its limiting mixture design values could be determined and validated. (C) 2017 Elsevier Ltd. All rights reserved.