摘要
通过弯曲梁流变试验(BBR)和半圆弯拉试验(SCB),以硫磺粉为稳定剂,对不同稳定剂掺量的SBS改性沥青进行了低温性能研究。结果表明:适量的硫磺粉改善了SBS聚合物与基质沥青的相容性,沥青的低温延展性提高;加入适量硫磺粉可提高星型SBS沥青混合料的低温抗裂性能,略微提升线型SBS沥青混合料的低温抗裂性能。
The low temperature performance of SBS modified asphalt with different content of sulfur pow⁃der and its mixture was analyzed by bending beam rheological test and semi-circular bending test.The results showed that the addition of sulfur powder improves the compatibility between SBS polymer and asphalt,and the ductility of SBS modified asphalt in low temperature was increased.Meanwhlie,added an appropriate a⁃mount of sulfur powder could improve the crack resistance of R-SBS asphalt mixture while has slight positive effect on that of L-SBS asphalt mixture.
作者
蔡易辰
黄卫东
吕泉
关维阳
CAI Yichen;HUANG Weidong;LV Quan;GUAN Weiyang(The Key Laboratory of Road and Traffic Engineering,Ministry of Education,Tongji University,Shanghai 201804;China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200135)
出处
《石油沥青》
2023年第4期30-34,共5页
Petroleum Asphalt
基金
高掺量SBS改性沥青的老化机理、模拟与性能评价,国家自然科学基金委员会面上项目(51978518)胶粉改性沥青粘附性的机理解析与性能评价研究,国家自然科学基金委员会青年基金项目(51908426)。
