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聚合物改性沥青低温性能指标研究
Low Temperature Performance Index of Polymer Modified Asphalt
投稿时间:2018-11-27  修订日期:2019-01-08
DOI:103969/j.issn1007 9629202002035
中文关键词:  改性沥青  低温指标  灰色关联理论  测力延度  玻璃态转变温度
英文关键词:modified asphalt  low temperature index  grey relation theory  force ductility  glass transfer temperature
基金项目:国家自然科学基金资助项目(51778224);湖南省交通科技计划项目(201705)
     
作者单位
颜可珍
YAN Kezhen
湖南大学土木工程学院,湖南长沙410082
College of Civil Engineering, Hunan University, Changsha 410082, China
王道珵
WANG Daocheng
湖南大学土木工程学院,湖南长沙410082
College of Civil Engineering, Hunan University, Changsha 410082, China
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中文摘要:
      研究了4类聚合物改性沥青的常规性能与低温流变性能,并对其混合料进行了低温弯曲试验.结合灰色关联理论,对聚合物改性沥青的多个低温性能指标与混合料低温弯曲试验结果进行了相关性分析.结果表明:聚合物改性沥青的玻璃态转变温度、低温流变性能指标、低温测力延度试验的黏韧性指标与沥青混合料低温弯曲试验结果均具有良好的关联性,其中的玻璃态转变温度关联度最高,能较好地反映聚合物改性沥青的低温性能,其次是低温流变指标和黏韧性指标.
英文摘要:
      The conventional performance and low temperature rheological properties of four types of polymer modified asphalt binders were tested. In addition, the low temperature bending test of mixtures was also carried out. Combined with grey correlational theory, the correlation between low temperature indexes of asphalt binder and performance of asphalt mixture was analyzed. For these kinds of modified asphalt binder, the results show that the glass transfer temperature, rheological index and toughness resulted from low temperature force ductility test of polymer modified asphalt have good correlation with the low temperature performance of asphalt mixture. Glass transfer temperature has the highest relevance, which can better reflect the low temperature performance of polymer modified asphalt, followed by low temperature rheological index and asphalt toughness.
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