摘要
应用灰关联熵分析法,对9种改性沥青的原样和经过RTFO短期老化试样的针入度、软化点、黏度、G*/sinδ等常规及SHRP指标与NCHRP 9-10推荐的重复蠕变恢复试验指标Gv的灰熵关联度进行了分析。结果表明,改性沥青的SHRP指标及软化点与Gv具有较高的的灰熵关联度,能较准确地评价改性沥青的高温性能。研究结果可为在夏季炎热地区的工程实践中合理地选择改性沥青提供参考。
The normal and SHRP indices such as penetration, softening point, viscoeity and G/sin6 were studied about the unaged and RTFO aged samples from nine modified asphalts. The grey entropy relational degree between each index and Gv, which recommended by NCHRP 9--10, was analyzed by the grey relation entropy method. The results show that the SHRP index or softening point of modified asphalts show good grey entropy relational degree with Gv, and they can evaluate accurately high-temperature performance of modified asphalt. This study will supply reference evidence for choosing reasonably modified asphalts in the engineering practice of hot are as.
出处
《科学技术与工程》
北大核心
2012年第28期7284-7288,共5页
Science Technology and Engineering
关键词
道路工程
改性沥青
高温性能
评价指标
灰关联熵
road engineering modified asphalt high-temperature performance evaluation indexgrey relation entropy
