Influence of different high viscosity modifiers on the aging behaviors of SBSMA. (30th August 2020)

• Record Type: Journal Article
• Authors: Wang, Sheng; Huang, Weidong; Lv, Quan; Yan, Chuanqi; Lin, Peng; Zheng, Mao
• Is Part Of: Construction & building materials. Volume 253(2020)
• Publication Date: 2020-08-30
• Subjects: High viscosity modifier -- ATR-FTIR -- SBSMA -- Aging indices -- Correlation analysis; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.119214
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: HVMs have good compatibility with SBSMA binder. HVMs can effectively improve the anti-aging performance of SBSMA. HVMs could improve the high temperature rheological property of the SBSMA binder. Aging degree of high viscosity modified asphalt could be predicted by SPI and VAI. Abstract: 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 rheological 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.