THFS对沥青感温性能的影响分析  

Analysis on Temperature Susceptibility of Asphalt Binder Affected by THFS

作　　者：季节[1,2] 武昊[1,2] 索智[1,2] 许鹰[1,2] 李明 JI Jie WU Hao SUO Zhi XU Ying LIMing(School of Civil Engineering and Transportation, Beijing University of Civil Engineering and Architecture, Bei- jing, China, 100044 Beijing Cooperative Innovation Research Center on Energy Saving and Emission Reduction, Beijing, China, 100044 Beijing Xinchang Road and Bridge Group Co. , Ltd. , Beijing, China, 101101)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京节能减排关键技术协同创新中心,北京100044 [3]北京鑫畅路桥建设有限公司,北京101101

出　　处：《沈阳建筑大学学报（自然科学版）》2017年第3期475-482,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51478028);北京教育委员会市属高校创新能力提升计划项目(PXM2015-014210-000003);北京市百千万人才工程

摘　　要：目的分析煤直接液化残渣(Direct Coal Liquefaction Residue,DCLR)中四氢呋喃可溶物(Tetrahydrofuran Soluble,THFS)作为改性剂对沥青感温性能的影响.方法采用SK-90沥青作为基质沥青,分别制备不同掺量的THFS改性沥青(与基质沥青质量比为0,4%,6%,8%,10%),测试THFS改性沥青的各项感温性能,分别计算针入度指数PI、针入度黏度指数PVN、黏温指数VTS、复数模量指数GTS和蠕变劲度指数STS_S,评价THFS对沥青感温性能的影响.结果与基质沥青相比,THFS的加入改善了沥青的感温性,且随着THFS掺量的增加,THFS改性沥青的PI、PVN值均增大,VTS、GTS、STS_S值均减小,说明THFS的掺量越高,THFS改性沥青感温性能越好.结论THFS改性沥青的感温性能更为优越,综合THFS改性沥青的各项性能,推荐THFS掺量为6%~8%.To analyze the temperature susceptibility of THFS （ tetrahydrofuran soluble ）, extracted from DCLR（ direct coal liquefaction residue）, modified asphalt binder, the THFS modified asphalt binders that have the 0,4% ,6% ,8% and 10% THFS content by weight of SK -90 are prepared respectively. The properties of the THFS modified asphalt binders are tested. The temperature sus- ceptibility indexes, such as PI, PVN, VTS, GTS and STSs, are calculated. The test results indicate that the PI, PVN value increases and the VTS, GTS, STSs value declines with the THFS content increases, which indicate the THFS modified asphalt binder is less sensitivity to temperature due to the addition of THFS. The temperature susceptibility is better with higher THFS content. In addition ,the optimal THFS content is recommended for 6% - 8% according to the whole properties.

关 键 词：道路工程 煤直接液化残渣 四氢呋喃可溶物 THFS掺量 改性沥青 感温性能 

分 类 号：TU502[建筑科学—建筑技术科学] U414[交通运输工程—道路与铁道工程]