摘要
选用表面活性类温拌剂,掺入SBS改性沥青中,制得温拌改性沥青。通过针入度、软化点、延度、黏度、沥青气动回弹试验、低温弯曲蠕变试验(BBR)等探究不同掺量的表面活性类温拌剂对SBS改性沥青各方面性能的影响。结果表明:表面活性类温拌剂使得SBS改性沥青的针入度减小、软化点和延度增加、黏度有所下降,蠕变变形量降低、蠕变恢复能力增强,低温抗裂性能有所改善。
Warm mixed asphalt is prepared bysurface active warm mixing agent mixed and SBS modified asphalt.The effects of different dosage of surface active warm mixers on the performance of SBS modified asphalt are investigated by penetration,softening point,ductility,viscosity,asphalt pneumatic rebound test and low temperature bending and creep test(BBR).The results show that the surface active warm mixing agent can reduce the penetration degree of SBS asphalt,increase the softening point and the ductility,decrease the viscosity,reduce the creep deformation,enhance the creep recovery ability,and improve the low temperature crack resistance.
作者
王恒恒
董昭
WANG Hengheng;DONG Zhao(School of Traffic Engineering,Shandong Jianzhu University,Jinan 250101;Shandong Transportation Research Institute,Jinan 250100)
出处
《石油沥青》
2021年第4期43-46,共4页
Petroleum Asphalt
基金
山东省自然科学基金重点项目(ZR2020KE024)。
关键词
道路工程
表面活性类温拌剂
SBS改性沥青
气动回弹
road engineering
surface active warm mixing agent
SBS modified asphalt
pneumatic rebound
