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6677276 
Journal Article 
Influence of different high viscosity modifiers on the aging behaviors of SBSMA 
Wang, S; Huang, W; Lv, Q; Yan, C; Lin, P; Zheng, Mao; , 
2020 
Yes 
Construction and Building Materials
ISSN: 0950-0618
EISSN: 1879-0526 
ELSEVIER SCI LTD 
OXFORD 
253 
English 
WOS:000539379300068 
High viscosity modifier (HVM) is a polymer material that has been widely employed in the porous pavement. However, its road performance deteriorates as the use of time increases. One of the main reasons for the deterioration of road performance is the aging of polymer materials. The purpose of this article was to investigate the influences of four different HVMs on the aging resistance of styrene-butadienestyrene modified asphalt (SBSMA). Composite SBSMA binders were prepared by using different HVMs. The functional groups of HVMs and SBSMA binder with and without HVMs before aging were characterized by Attenuated total reflection (ATR)-Fourier transform infrared (FTIR). All the samples were tested with thin film oven test (TFOT) and pressure aging vessel (PAV), respectively. Physical and rheo-logical properties were tested on all samples of SBSMA binders with and without HVMs, and chemical properties were characterized by ATR-FTIR. FTIR spectroscopy test result shows that HVMs have good compatibility with SBSMA binder and the aging resistance of the SBSMA can be improved through HVMs, but the improvement effect is reduced with the increase of aging degree. With the addition of HVMs, the high-temperature stability and low temperature properties of SBSMA binders are improved. After two aging methods, blending HVMs into SBSMA binder shows lower aging indices, indicating their good anti-aging properties. Moreover, on the basis of correlation analysis, the aging degree of high viscosity modified asphalt could be predicted by softening point increment and viscosity aging index. (C) 2020 Elsevier Ltd. All rights reserved. 
High viscosity modifier; ATR-FTIR; SBSMA; Aging indices; Correlation analysis 
CONSTRUCTION AND BUILDING MATERIALS