Effect of Waste Oil Residue Regenerators on Dynamic Mechanical Properties and Component Migration of Aged Asphalt
KUANG Dongliang1, MA Xiaojun1,2, MA Xiaoyan1,*, YUAN Bin3, HOU Junpeng1, CAI Jun4
1 School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China 2 Qinghai Transportation Planning and Design Institute Co., Ltd., Xining 810000, China 3 Gansu Road and Bridge Construction Group Maintenance Technology Co., Ltd., Lanzhou 730050, China 4 Qinghai Xihu Highway Management Co., Ltd., Xining 810000, China
Abstract: The study of recycled asphalt is currently primarily focused on the recovery of aging asphalt properties, with little attention paid to the aging of recycled asphalt. In this study, two types of recycled engine oil bottom (REOB1 and REOB2) were used to regenerate the aged matrix asphalt, and short-term (TFOT) and long-term (PAV) aging were performed on the recycled asphalt. The dynamic mechanical properties and chemical component changes of recycled asphalt and its aged condition were evaluated using the dynamic shear rheometer (DSR) and the thin layer chromatography-flame ionization detector (TLC-FID). The results show that both REOB regenerants can restore the performance of aging matrix asphalt to that of the original asphalt, and that REOB2 regenerant is more compatible with aging matrix asphalt than REOB1 regenerant;the complex modulus and phase angle of the aging matrix asphalt could be retrieved by both REOB regenerants, according to master curve fitting with the CAM model and normalization of the fitting data. During the secondary aging process, the normalized complex modulus index (NCMI) of RA+REOB reclaimed asphalt gradually increases in the low and medium frequency range, and even after long-term aging, its complex modulus is still lower than that of long-term aging matrix asphalt. The normalized phase angle index (NPAI) in the middle frequency range is significantly higher than in the low and high frequency ranges, and the NPAI of the RA+REOB1 recycled asphalt after PAV aging is lower than the matrix asphalt after long-term aging. The chemical components of the RA+REOB recycled asphalt migrate from the aromatic components to the resins as the aging degree increases, and the REOB1 reclaimed asphalt loses the most light components after PAV aging.
通讯作者:
*马晓燕,长安大学材料科学与工程学院讲师。2008年南京林业大学土木工程专业本科毕业,2012年长安大学材料学硕士研究生毕业,2012—2015年在甘肃路桥集团养护科技有限公司担任研发中心主任,2019年长安大学道路材料科学与工程专业博士毕业,2020年至今在长安大学公路学院进行博士后研究。目前主要从事道路建筑材料和多尺度沥青材料结构和力学性能的计算。发表论文20余篇,包括Journal of Materials in Civil Engineering、Construction and Building Materials、《材料导报》等。xiaoyanma@chd.edu.cn
作者简介: 况栋梁,长安大学材料科学与工程学院教授、博士研究生导师。2004年武汉理工大学化学工程与工艺专业本科毕业,2012年武汉理工大学复合材料学专业博士毕业。目前主要从事沥青材料改性与评价、固体废弃物高质化制备道路材料与高性能绿色铺装技术研究。发表论文50余篇,包括Construction and Building Materials、《中国公路学报》等。
引用本文:
况栋梁, 马小军, 马晓燕, 袁斌, 侯俊鹏, 蔡军. 废机油残留物再生剂对老化沥青动态力学性能和组分迁移的影响[J]. 材料导报, 2024, 38(2): 22050182-8.
KUANG Dongliang, MA Xiaojun, MA Xiaoyan, YUAN Bin, HOU Junpeng, CAI Jun. Effect of Waste Oil Residue Regenerators on Dynamic Mechanical Properties and Component Migration of Aged Asphalt. Materials Reports, 2024, 38(2): 22050182-8.
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2024, Vol. 38 
