Effect of the softer binder on the performance of repeated RAP binder

被引：15
|
作者：
He, Hongsen [1 ]
Zhang, Enhao [2 ]
Fatokoun, Serge [1 ]
Shan, Liyan [1 ]
机构：
[1] Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Heilongjiang, Peoples R China
[2] Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Heilongjiang, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 178卷
基金：
中国国家自然科学基金;
关键词：
Rejuvenator; RRAP; DSR; FTIR; AFM; RECLAIMED ASPHALT PAVEMENT; BLENDING EFFICIENCY; REJUVENATING AGENTS; MOLECULAR-DYNAMICS; MIXTURES; DIFFUSION; BITUMEN; FTIR;
D O I：
10.1016/j.conbuildmat.2018.05.106
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A softer binder as the rejuvenator was added into the repeated reclaimed asphalt pavement (RRAP) binder to study the rejuvenating mechanism. Consistency properties, chemical oxidation degree, rheological properties, microscopic morphology and mechanics were studied using consistency tests, fourier transform infrared spectroscopy (FTIR), dynamic shear rheometer (DSR) and atomic force microscope (AFM). With increase in rejuvenator concentration, consistency properties, rheological properties and micro mechanical properties were improved and the oxidation degree was declined. Meanwhile the microstructures changed significantly. Results show that properties of the RRAP binder can be restored with the addition of the softer binder and the appropriate proportion is 40%. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 287
页数：8
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