Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt
Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt
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利用DSR和MSCR测试表征不同橡胶改性沥青的高温性能
DOI：
10.1016/j.conbuildmat.2016.10.010
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发表时间：
2016-11-30
影响因子：
7.4
通讯作者：
Tan Yi-qiu
中科院分区：
文献类型：
--
作者：
Zhang Lei;Xing Chao;Tan Yi-qiu
橡胶改性沥青(RA)在过去的几十年里被普遍用于改善沥青混合料的高温性能。采用动态剪切流变仪(DSR)、多应力蠕变恢复仪(MSCR)和方差统计分析(ANOVA)对橡胶改性沥青的高温性能进行了研究，并在试验结果的基础上提出了评价橡胶改性沥青高温性能的最佳指标。DSR试验结果表明，橡胶粉的掺入对沥青的高温性能有明显的改善作用。多应力蠕变恢复(MSCR)试验结果表明，橡胶细度较低或等级较低的整齐沥青用于生产橡胶改性沥青时，累积应变显著降低。在方差分析的基础上，建议用JnR和R%指标来表征不同橡胶改性沥青的抗车辙性能。(C)2016爱思唯尔有限公司。保留所有权利。
Rubber modified asphalt (RA) has been generally used to improve the high temperature performance of asphalt mixtures in the past decades. This study is to investigate the high temperature performance of rubber modified asphalt in ways of Dynamic Shear Rheometer (DSR), Multiple Stress Creep Recovery (MSCR) and statistical analysis of variance (ANOVA), and an optimum index for evaluating the high temperature performance is recommended based on the experimental results. The DSR test results show that the addition of rubber powder into the neat asphalt leads to a significant improvement of high temperature performance. Multiple Stress Creep Recovery (MSCR) test results confirm that the accumulated strain remarkably decreases when lower rubber fineness or lower grade neat asphalt is used to produce rubber modified asphalt. Based on the ANOVA, it is recommended that the indexes of Jnr and R% can be used to characterize high temperature performance in terms of the rutting resistance of different rubber modified asphalts. (C) 2016 Elsevier Ltd. All rights reserved.