Low Temperature Rheological Performance Analysis of Rubber Modified Asphalt under Heat Aging Process
YU Jiang1, ZHAO Qun1, YE Fen2, SONG Qingqing2
1. Civil Construction College of Xinjiang University，Urumqi 830047，China; 2. Key Laboratory of Road and Traffic Engineering of Ministry of Education，Tongji University，Shanghai 201804，China
Abstract：In order to explore the low temperature rheological properties of rubber modified asphalt (namely the activated twin-screw extruded rubber (AER) powder modified asphalt) and AER/SBS (styrene-butadiene styrene) composite modified asphalt under aging. The low temperature rheological properties of AER modified asphalt and its composite modified asphalt under different aging conditions and different rubber powder content were studied using conventional performance，low temperature bending test and Burgers model. At the same time，the influence of aging on the functional group of AER rubber modified asphalt was quantitatively analyzed by infrared FTIR method，and the correlation between its functional group index and various low temperature indicators was analyzed. The results show that AER and SBS can improve the low temperature performance of asphalt under different aging conditions；the low temperature performance of AER/SBS composite modified asphalt is better than AER modified asphalt under short-term aging，while the opposite is true under long-term aging. Both AER and SBS modifiers can improve the stiffness modulus of asphalt and AER has a greater impact on asphalt stiffness modulus，while low temperature grading indexes (i.e.，stiffness modulus S，creep rate m，and the ratio S/m) and viscoelasticity indexes (i.e.，relaxation time λ and dissipation-storage energy ratio a has a strong correlation. The low temperature performance of AER modified asphalt has a high correlation with the fat index IA and the fat long chain index IAL：the greater the aliphatic index，the better the low temperature performance，while the aliphatic fat long chain index is the opposite.
PETERSEN J C, ROBERTSON R E, BRANTHAVER J F, et al. Binder characterization and evaluation[J]. Distress, 1994, 1: 208-210
[2]
PRESTI D L. Recycled tyre rubber modified bitumens for road asphalt mixtures:a literature review[J]. Construction and Building Materials, 2013, 49: 863-881
[3]
陈文青,黄承亚. 国外挤出法再生废旧橡胶的研究进展[J]. 合成橡胶工业,2008,31(5): 406-408CHEN Wenqing, HUANG Chengya. Foreign research progress in reclaiming ground rubber by extrusion[J]. China Synthetic Rubber Industry, 2008, 31(5): 406-408
[4]
刘志军,李翔,许晓飞,等. 超临界二氧化碳中废旧轮胎橡胶脱硫再生[J]. 高分子材料科学与工程,2015,31(12): 92-97LIU Zhijun, LI Xiang, XU Xiaofei, et al. Devulcanization of waste tire rubber in supercritical carbon dioxide[J]. Polymer Materials Science & Engineering, 2015, 31(12): 92-97
[5]
张广泰,李悦,陈柳灼,等. 废机油活化废旧轿车轮胎胶粉改性沥青的流变性能[J]. 建筑材料学报,2018,21(2): 320-326ZHANG Guangtai, LI Yue, CHEN Liuzhuo, et al. Rheological properties of the asphalt modified by the activated rubber in the presense of waste engine oil[J]. Journal of Building Materials, 2018, 21(2): 320-326
[6]
蔡键. 助剂活化胶粉/SBS复合改性沥青路用性能研究计划[D]. 武汉：武汉工程大学，2016.
[7]
朱月风,姜鹏. 掺加国产TOR的橡胶沥青黏温特性及路用性能研究[J]. 材料导报,2016,30(12): 134-139ZHU Yuefeng, JIANG Peng. Viscosity temperature characteristics and pavement performance rubber modified asphalt added with domestic tor[J]. Materials review, 2016, 30(12): 134-139
[8]
谭忆秋,符永康,纪伦,等. 橡胶沥青低温评价指标[J]. 哈尔滨工业大学学报,2016,48(3): 66-70TAN Yiqiu, FU Yongkang, JI Lun, et al. Low-temperature evaluation index of rubber asphalt[J]. Journal of Harbin Institute of Technology, 2016, 48(3): 66-70
[9]
KÖK B V,YILMAZ M,GEÇKIL A. Evaluation of low-temperature and elastic properties of crumb rubber– and SBS-modified bitumen and mixtures[J]. Journal of Materials in Civil Engineering,2013,25(2): 257-265
[10]
ROOJ S, BASAK G C, MAJI P K, et al. New route for devulcanization of natural rubber and the properties of devulcanized rubber[J]. Journal of Polymers & the Environment, 2011, 19(2): 382-390
黄卫东,吕泉,柴冲冲. Terminal Blend胶粉改性沥青的复合改性研究[J]. 建筑材料学报,2016,19(1): 111-118HUANG Weidong, LÜ Quan, CHAI Chongchong. Research on composite modification by Terminal Blend asphalt[J]. Journal of Building Materials, 2016, 19(1): 111-118
[13]
董瑞琨,戚昌鹏,郑凯军,等. 高温裂解胶粉改性沥青的低温性能试验[J]. 中国公路学报,2017,30(10): 32-38DONG Ruikun, QI Changpeng, ZHENG Kaijun, et al. Test on low tempeiature performance for high temperature pyrolytic rubber modified asphalt[J]. China Journal of Highway and Transport, 2017, 30(10): 32-38
[14]
吕泉,黄卫东,柴冲冲. Terminal Blending橡胶沥青的特性与应用前景[J]. 重庆交通大学学报 (自然科学版),2014,33(4): 51-55LÜ Quan, HUANG Weidong, CAI Chongchong. Properties and application of Terminal Blending rubber asphalt[J]. Journal of Chongqing Jiaotong University (Natural Science), 2014, 33(4): 51-55
[15]
陈华鑫,陈拴发,王秉纲. 基质沥青老化行为与老化机理[J]. 合成材料老化与应用,2009,38(1): 13-19CHEN Huaxin, CHEN Shunfa, WANG Binggang. The aging behavior and mechanism of base asphalts[J]. Synthetic Materials Aging and Application, 2009, 38(1): 13-19
[16]
李萍,念腾飞,魏定邦,等. FTIR定量分析方法与老化沥青流变参数新探[J]. 华中科技大学学报(自然科学版),2018,46(2): 34-39LI Ping, NIAN Tengfei, WEI Dingbang, et al. Quantitative analysis method for FTIR and exploration on rheological parameters of aging asphalt binders[J]. Journal of Huazhong University of Science and Technology (Natural science edition), 2018, 46(2): 34-39
[17]
赵永利,顾凡,黄晓明. 基于FTIR的SBS改性沥青老化特性分析[J]. 建筑材料学报,2011,14(5): 620-623ZHAO Yongli, GU Fan, HUANG Xiaoming. Analsys on SBS modified zsphalt aging characterization based on Fourier transform infrared spectroscppy[J]. Journal of Building Materials, 2011, 14(5): 620-623
LIU S, CAO W, SHANG S, et al. Analysis and application of relationships between low-temperature rheological performance parameters of asphalt binders[J]. Construction & Building Materials, 2010, 24(4): 471-478
