摘要
通过探索并优化弹性恢复的试验条件来有效评价高性能改性沥青的路用性能.结果表明:改变高性能改性沥青的恢复时间或拉伸长度,沥青区分度增加均不明显;改变试验温度,沥青区分度较好;在25℃的标准试验温度下,沥青弹性恢复率受SBS掺量的影响很小;在5℃的试验温度下,沥青弹性恢复率受SBS掺量的影响较为明显,沥青区分度好,且与重复蠕变恢复试验结果具有很好的一致性.因此建议在评价高性能改性沥青性能时,采用5℃弹性恢复率这一指标.
Conditions of elastic recovery were explored and optimized to evaluate the properties of high performance modified asphalts effectively.The results show that it is not obvious to change the hold time or elongation of the high performance modified asphalts while it is obvious to change test temperature.SBS content of high performance modified asphalts has a slight influence on elastic recovery at 25℃but it becomes obvious at 5℃.The results accord with those from repeated creep recovery test.So evaluation of high performance modified asphalts is suggested to be carried out at 5℃.
作者
姚鸿儒
曹亚东
周晓龙
乐海淳
YAO Hongru;CAO Yadong;ZHOU Xiaolong;LE Haichun(Petroleum Processing Research Center,East China University of Science and Technology,Shanghai 200237,China;Shanghai Urban Construction NichiReki Special Asphalt Co.,Ltd.,Shanghai 200231,China;Shanghai Road and Bridge(Group)Co.,Ltd.,Shanghai 200433,China)
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2021年第2期370-376,384,共8页
Journal of Building Materials
基金
上海市产业转型升级专项资金(产业技术创新)企业技术创新能力提升项目(沪J-2018-29)。
关键词
高性能
改性沥青
弹性恢复
试验温度
相关性
high performance
modified asphalt
elastic recovery
test temperature
correlation
