摘要
为系统地评估不同改性剂对基质沥青各项性能指标的改性效果,选取LDPE和SBS等五种聚合物及两种纳米材料作为改性剂,分别在三种掺量下改性70^#基质沥青.通过比较改性沥青的高、低温性能、感温性能和延性,评估不同改性剂在不同掺量下的改性效果.研究结果表明,SBS对基质沥青各项性能指标的改善效果最为突出,旧LDPE的综合改性效果优于新LDPE,废旧胶粉在改善低温性能方面较为显著,SBR可在改善基质沥青高、低温性能的同时显著地提高延度,纳米ZnO和纳米TiO 2在提高延度(15℃)方面效果较为突出,旧LDPE、SBS、废旧胶粉及SBR四种材料的综合改性效果较为优异.
In order to systematically assess the modified effect of different modifiers to base asphalt in performance index,we select five kinds of polymers(such as LDPE,SBS)and two kinds of nanometer materials as modifier,and put three amount of admixture into 70^# base asphalt. Compared with the high and low temperature performance of modified asphalt and its temperature susceptibility and ductibility,we assess the different modifier to the different amount of admixture.The study shows that SBS have outstanding performance on modified effects of base asphalt, the old LDPE is better than the new LDPE in comprehensive modified effect, waste rubber powder can dramatically improve the low temperature performance, SBR is able to improve the high and low temperature performance of base asphalt, as the same time,it also can dramatically improve the ductility,Nanometer ZnO and Nanometer TiO2 have the better performance on ductility( 15 ℃). The old SBS, waste rubber powder and SBR are more remar kable in comprehensive modified effect.
作者
孙春阳
曲恒辉
张圣涛
刘树堂
SUN Chun-yang;QU Heng-hui;ZHANG Sheng-tao;LIU Shu-tang(School of Qilu Transportation, Shandong University, Jinan 250061, China;Qilu Co. LTD. of Transportation Material Technology Development, Jinan 250061, China)
出处
《长沙理工大学学报（自然科学版）》
CAS
2019年第2期28-35,共8页
Journal of Changsha University of Science and Technology:Natural Science
基金
山东省自然科学基金资助项目(ZR2013EEM028)
山东省重点研发计划项目(2016GSF11601)
关键词
沥青改性剂
SBR橡胶
纳米ZNO
纳米TIO2
基质沥青
高低温性能
感温性能
asphalt modifier
butadiene styrene rubber (SBR)
nano-ZnO
nano- TiO2
base asphalt
high ang low temperature performance
temperature susceptibility
