期刊论文

中文

武汉理工大学学报

1671-4431

2017

39

1

28-36

10.3963/j.issn.1671-4431.2017.01.006

国家自然科学基金（51678078）；

本校为第一机构

为了研究紫外光吸收剂（UV-531）对不同嵌段比SBS改性沥青性能的影响,采用高速剪切仪制备不同嵌段比（分别为40/60、30/70、20/80）SBS改性沥青,通过熔融共混的方法分别掺加3种剂量UV-531制成UV-SBS改性沥青。利用动态剪切流变试验、弯曲梁流变试验和测力延度试验探究了不同掺量UV-531和不同嵌段比对沥青高、低温性能的影响规律。结果表明:UV-531的加入对嵌段比为20/80的SBS改性沥青高低温性能改善效果不明显,对其他两种嵌段比SBS改性沥青的改善效果显著。使用室内紫外光老化环境箱模拟了沥青的紫外老化,借助软化点增量、G*AI和红外光谱分别研究了UV-SBS改性沥青的老化程度和化学机理。从沥青抗...

To study the effect of ultraviolet absorber (UV-531) on peoperties of SBS modified bitumen with different block ratios, the SBS modified asphalt with different block ratios(40/60, 30/70, 20/80) were prepared with the high speed shearing apparatus, and the UV-SBS modified asphalt was prepared with three doses of UV-531 by the melt blending method.The effects of different dosages of UV-531 and different block ratios on the high and low temperature performance of asphalt were studied by the dynamic shear rheological test, the bending beam rheologi...