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Investigation of low-temperature properties of recycling of aged SBS modified asphalt binder
被引:72
作者:
Bai, Min
[1
]
机构:
[1] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Shaanxi, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Asphalt;
SBS modified asphalt;
Low temperature properties;
Aged;
POLYMER-MODIFIED BITUMENS;
REJUVENATING AGENTS;
STRESS-RELAXATION;
MIXTURES;
PAVEMENT;
D O I:
10.1016/j.conbuildmat.2017.05.206
中图分类号:
TU [建筑科学];
学科分类号:
0813 ;
摘要:
Low temperature properties of the styrene-butadiene-styrene (SBS) modified asphalt binder and aged SBS modified asphalt binder containing rejuvenators were investigated using conventional methods (penetration and ductility at 5 degrees C), Fraass breaking point test, dynamic shear rheometer (DSR), force ductility test and bending beam rheometer (BBR). Effects of the aging and the contents and characteristics of the rejuvenator on these properties were studied. The results indicated that aging declined low temperature properties of SBS modified asphalt binder, and the rejuvenators improved low temperature properties of aged SBS modified asphalt binder. The degrees of improvement increased with rejuvenator content and were influenced by rejuvenator type. The study also showed a statistically linear correlation between different low temperature parameters. But the penetration at degrees C may not a good parameter to evaluate the low temperature properties of asphalt binder. (C) 2017 Elsevier Ltd. All rights reserved.
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页码:766 / 773
页数:8
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