摘要In order to explore the relationship between the microstructure characteristics and the macromechanics characteristic of rubber modified asphalt at different activation temperatures, on the basis of conventional performance testing, dynamic shear rheological test and multi-stress creep recovery test, the change rule of microstructure and macromechanics characteristic of rubber modified asphalt were obtained and the relationship between them was established through infrared spectrum test. And through the grey correlation analysis, the relationships among the macromechanics characteristic, the microstructure index and the macromechanics index of the rubber modified asphalt at different activation temperatures were obtained. Results showed that:under the infrared spectrum, the activation of the rubber powder mainly changed the stretching vibration intensity of the sulfoxide group and butadienyl groups at 1030 cm-1 and 1600 cm-1, respectively. With the increase of activation temperature, the sulfoxide group (S=O) and the butadienyl group (C=C) indexes under infrared spectra gradually decreased, the anti-rutting factor (G*/sin δ) and creep recovery rate R3.2 showed a trend of gradual decrease, while the loss factor (tan δ) and non-recoverable creep compliance Jnr3.2 showed a trend of gradual increase. From the relationship model between micro and macro indexes, it could be seen that the S=O of rubber modified asphalt showed a good correlation with macromechanics characteristics. Among those, S=O showed the best linear correlation with the ductility, with the coefficient of determination R2 0.888 0. The C=C index showed a best linear correlation with Brookfield viscosity at 135℃, with the coefficient of determination R2 0.9909. It had a poor correlation with needle penetration. It can be seen from the grey correlation analysis that the rubber modified asphalt showed the best comprehensive mechanical properties when the activation temperature was 70℃, and the S=O index showed the best correlation with the Brookfield viscosity at 135℃, and the C=C index showed the best correlation with the softening point.
Abstract：In order to explore the relationship between the microstructure characteristics and the macromechanics characteristic of rubber modified asphalt at different activation temperatures, on the basis of conventional performance testing, dynamic shear rheological test and multi-stress creep recovery test, the change rule of microstructure and macromechanics characteristic of rubber modified asphalt were obtained and the relationship between them was established through infrared spectrum test. And through the grey correlation analysis, the relationships among the macromechanics characteristic, the microstructure index and the macromechanics index of the rubber modified asphalt at different activation temperatures were obtained. Results showed that:under the infrared spectrum, the activation of the rubber powder mainly changed the stretching vibration intensity of the sulfoxide group and butadienyl groups at 1030 cm-1 and 1600 cm-1, respectively. With the increase of activation temperature, the sulfoxide group (S=O) and the butadienyl group (C=C) indexes under infrared spectra gradually decreased, the anti-rutting factor (G*/sin δ) and creep recovery rate R3.2 showed a trend of gradual decrease, while the loss factor (tan δ) and non-recoverable creep compliance Jnr3.2 showed a trend of gradual increase. From the relationship model between micro and macro indexes, it could be seen that the S=O of rubber modified asphalt showed a good correlation with macromechanics characteristics. Among those, S=O showed the best linear correlation with the ductility, with the coefficient of determination R2 0.888 0. The C=C index showed a best linear correlation with Brookfield viscosity at 135℃, with the coefficient of determination R2 0.9909. It had a poor correlation with needle penetration. It can be seen from the grey correlation analysis that the rubber modified asphalt showed the best comprehensive mechanical properties when the activation temperature was 70℃, and the S=O index showed the best correlation with the Brookfield viscosity at 135℃, and the C=C index showed the best correlation with the softening point.
基金资助:Supported by the National Natural Science Foundation of China (No.51568064)
通讯作者:
ZHANG Guang-tai
E-mail: zgtlxh@126.com
引用本文:
张广泰, 易宝, 张晓旭, 章金鹏. Study on the Relationship between Microstructure and Macro-properties of Rubber Asphalt at Different Activation Temperatures[J]. Journal of Highway and Transportation Research and Development, 2021, 15(3): 1-10.
ZHANG Guang-tai, YI Bao, ZHANG Xiao-xu, ZHANG Jin-peng. Study on the Relationship between Microstructure and Macro-properties of Rubber Asphalt at Different Activation Temperatures. Journal of Highway and Transportation Research and Development, 2021, 15(3): 1-10.
[1] XU O, XIAO F, HAN S, et al. High Temperature Rheological Properties of Crumb Rubber Modified Asphalt Binders with Various Modifiers[J]. Construction & Building Materials, 2016, 112:49-58. (in Chinese)
[2] ZHOU Zi-hao, LIU Zhao-hui, WANG Xu-dong, et al. Study on Dynamic Flexural Modulus of Rubber Asphalt Mixture[J]. Journal of Highway and Transportation Research and Development, 2019,36(1):16-21,54. (in Chinese)
[3] ZHANG Guang-tai, LI Yue, CHEN Liu-zhuo, et al. Rheological Properties of the Asphalt Modified by the Activated Rubber in the Presence of Waste Engine Oil[J]. Journal of Building Materials, 2018, 21(2):320-326.
[4] XU Jing, YING Yi, QIAN Qing-rong, et al. Research and Application of Crumb Rubber-modified Asphalt[J]. Recyclable Resources and Circular Economy, 2014, 7(6):41-44. (in Chinese)
[5] WANG Tie-qing, YANG Ren-feng, LI Ai-guo, et al. Comparative Experimental Research of Elastic Recovery Performance Indexes of Rubber Asphalt[J]. Journal of Highway and Transportation Research and Development, 2016,33(4):32-38. (in Chinese)
[6] WANG Yan-zhu, WANG Xu-dong, ZHANG Long-sheng, et al. Study on Compatibility and Adhesion Property of Rubber Asphalt[J]. Journal of Highway and Transportation Research and Development, 2019,36(3):34-41,72. (in Chinese)
[7] CHEN Ge. Study on Properties and Modification Mechanism of Rubber Asphalt Based on Activation Characteristics[J]. Journal of China & Foreign Highway, 2017,37(1):249-253. (in Chinese)
[8] XIAO Fei-peng, ZONG Qi-di, CHEN Jun, et al. Processing Conditions Optimization Analysis of Crumb Rubber Modified Asphalt Treated by Plasma Micrometer Processing Method[J]. China Journal of Highway and Transport, 2019,32(4):174-180. (in Chinese)
[9] HE Dong-po, WANG Hao. Study on Pavement Performance of Rubber Asphalt Prepared by Gasoline Activated Rubber Powder[J]. Journal of China & Foreign Highway, 2013, 33(4):288-291. (in Chinese)[ZK)]
[10] SHATANAWI K M, BIRO S, GEIGER A, et al. Effects of Furfural Activated Crumb Rubber on the Properties of Rubberized Asphalt[J]. Construction & Building Materials, 2012, 28(1):96-103.
[11] SHATANAWI K, BIRO S, NASER M, et al. Improving the Rheological Properties of Crumb Rubber Modified Binder Using Hydrogen Peroxide[J]. Road Materials & Pavement Design, 2013, 14(3):723-734.
[12] ARSHAD A K, KAMALUDDIN N A, HASHIM W, et al. Physical and Rheological Properties of Aged Bitumen Rejuvenated with Waste Engine Oil[J]. Applied Mechanics and Materials, 2015, 802:363-368.
[13] TANG Nai-peng, HUANG Wei-dong. High High Temperature Performance Evaluation and Grading of SBS Modified Asphalt Based on Multiple Stress Creep Recovery Test[J]. Journal of Building Materials, 2016, 19(4):665-671. (in Chinese)
[14] LIU Ben, SHEN Ju-man, SHI Peng-cheng. Nano-scale Microscopic Characteristics and Functional Groups of Aged Asphalt[J].Journal of Highway and Transportation Research and Development, 2016,33(2):6-13. (in Chinese)
[15] TAN Hua, HU Song-shan, LIU Bin-qing, et al. Study on Viscoelastic Properties of Rubber Modified Asphalt Based on Rheology[J]. China Civil Engineering Journal, 2017, 50(1):115-122. (in Chinese)
[16] YUSOFF N I M, MOUNIER D, MARC-STéPHANE G, et al. Modelling the Rheological Properties of Bituminous Binders Using the "2S2P1D" Model[J]. Construction & Building Materials, 2013, 38(40):395-406.
[17] ASGHARZADEH S M, TABATABAEE N, NADER K, et al. An Empirical Model for Modified Bituminous Binder Master Curves[J]. Materials & Structures, 2013, 46(9):1459-1471.
[18] AASHTO MP19-10, Standard Specification for Performance-graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test[S].
[19] GUO Yong-mei, XU Li, WU Liang, et al. High-temperature Performance Evaluation of Modified Asphalts Based on Multiple Stress Creep Recovery Test[J]. Journal of Building Materials, 2018, 21(1):154-158. (in Chinese)
[20] DENG Ju-long. Basic Method of Grey System[M]. Wuhan:Central China University of Technology Press, 1987. (in Chinese)
[21] LI Li-han. Analysis of Relation Degree of Asphalt Performance Index[J]. Petroleum Asphalt, 2000(3):6-10. (in Chinese)
2021, Vol. 15 
