摘要
通过对SBS(苯乙烯丁二烯苯乙烯嵌段共聚物)物理和化学改性沥青的动态剪切流变试验(DSR)及其改性沥青混合料的马歇尔、车辙和APA(沥青路面分析)车辙试验,对比分析了2种类型改性沥青对沥青混合料抗车辙能力产生的不同影响.由车辙试验结果可知:化学改性沥青混合料的动稳定度为物理改性沥青混合料的1.5倍以上,表明化学改性沥青混合料抗车辙能力好于物理改性沥青混合料,而美国SHRP的APA车辙试验结果也得到了相同的结论.
According to the results of DSR test, Marshall test, rutting-test and asphalt pavement analysis （APA） of SBS physical and chemical modified bitumen mixtures, the comparison of rut resistance between two types of modified mixtures is analyzed. It can offer bases to choose bitumen and design mixtures in the actual engineering. From the results of the rutting-test it can be seen that the stability of SBS chemical modified mixture is one and a half times of that of the physical one. It shows that the rut resistance performance of the former is better than the latter. And the same conclusion can be drawn from the SHRP＇s asphalt pavement analysis （APA）.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2005年第4期79-82,共4页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省交通科学研究计划项目(02y029)
关键词
SBS
改性沥青
混合料
沥青路面分析
抗车辙
styrene butadiene styrene block copolymer
modified bitumen
mixture
asphalt pavement analysis
rut resistance
