基于有限元和分子模拟的热再生沥青激活行为研究

doi:10.11896/cldb.22040306

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Abstract The activation behavior of aged asphalt is a key factor affecting the performance of the hot recycled asphalt and mixture.Based on onehot in-place recycling project of asphalt pavement, the finite element method was applied to analyze the cooling process of the recycled asphalt surface layer after paving, and the cooling curve of the recycled asphalt mixture was obtained.The double-layer diffusion experiment was designed to study the diffusion law of rejuvenator into the aged asphalt, and the mixing behavior of rejuvenator with virgin and aged asphalt was simulated by the molecular dynamics simulation.The effects of the temperature field, diffusion time and rejuvenator composition on the recycling activation behavior of aged asphalt were discussed.Results show that there are differences in diffusion between virgin asphalt, aged asphalt and rejuvenator at different depths of the recycled asphalt surface layer, which is difficult to eliminate in a short term.The van der Waals force is the main interaction between virgin and aged asphalt.The rejuvenator reduces the van der Waals force between virgin and aged asphalt molecules, which promotes their mutual diffusion and expands the range of the asphalt mixing zone.Compared with the aromatic hydrocarbon component in the rejuvenator, the chain hydrocarbon component is more conducive to reducing the van der Waals forces between virgin and aged asphalt molecules, but its effect of improving the diffusion coefficient of virgin and aged asphalt is limited.The rejuvenator content has a significant marginal utility reduction phenomenon on the activation effect of the aged asphalt.

Key words： hot recycling rejuvenator activation behavior finite element method molecular dynamics

Published: 10 July 2024 Online: 2024-08-01

CLC number:

U414

Fund:National Natural Science Foundation of China (51808116), Major Science and Technology Project of Nanjing (202209012), Natural Science Foundation of Jiangsu Province (BK20221468),Postdoctoral Fellowship Program of CPSF (GZC20230432), and Jiangsu Funding Program for Excellent Postdoctoral Talent (2023ZB519).

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	Articles by authors
	ZHU Yajing
	XU Guangji
	MA Tao
	FAN Jianwei
	HU Jing

Cite this article:

ZHU Yajing,XU Guangji,MA Tao, et al. Finite Element and Molecular Simulation on Activation Behavior of Hot Rejuvenated Asphalt[J]. Materials Reports, 2024, 38(13): 22040306-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22040306 OR http://www.mater-rep.com/EN/Y2024/V38/I13/22040306

1 Wei W, Guo P, Tang B. Materials Reports, 2017, 31(11), 109 (in Chinese).
韦万峰, 郭鹏, 唐伯明. 材料导报, 2017, 31(11), 109.
2 Guo P, Xie F, Meng J, et al. Materials Reports, 2020, 34(13), 13100(in Chinese).
郭鹏, 谢凤章, 孟建玮, 等. 材料导报, 2020, 34(13), 13100.
3 Doh Y, Amirkhanian S, Kim K. Construction and Building Materials, 2008, 22(6), 1253.
4 Xu G, Wang H, Sun W. Construction and Building Materials, 2018, 158, 1046.
5 Lin J, Hong J, Chong H, et al. Construction and Building Materials, 2014, 55, 63.
6 Kuang D, Liu W, Xiao Y, et al. Construction and Building Materials, 2019, 223, 986.
7 Shateyi S, Mabood F, Lorenzini G. Journal of Engineering Thermophysics, 2017, 26(1), 39.
8 Crank J. 1975. The mathematics of diffusion, 2nd edition, Oxford, Clarendon Press.
9 Tanzadeh R, Arabani M. Advanced Materials Research, 2012, 587, 57.
10 Kuang D, Jiao Y, Ye Z, et al. Materials, 2018, 11(5), 833.
11 Cong P, Hao H, Zhang Y, et al. International Journal of Pavement Research and Technology, 2016, 9(4), 280.
12 Lin P, Chang C, Wu T. Advanced Materials Research, 2013, 723, 670.
13 Jia L, Sun L, Huang L, et al. Journal of Tongji University(Natural Science), 2007, 35(8), 1039 (in Chinese).
贾璐, 孙立军, 黄立葵, 等. 同济大学学报(自然科学版), 2007, 35(8), 1039.
14 Gao L, Liu Y, Xie J, et al. Materials, 2021, 14(2), 245.
15 Hendel M, Colombert M, Diab Y, et al. Applied Thermal Engineering, 2015, 78, 658.
16 Du Y, Ge Y. Journal of the Chinese Ceramic Society, 2022, 50(02), 466 (in Chinese).
杜渊博, 葛勇. 硅酸盐学报, 2022, 50(02), 466.
17 Kim K, Jeon S, Kim J, et al. Cement and Concrete Research, 2003, 33(3), 363.
18 Baghban M, Hovde P, Jacobsen S, et al. Materials and Structures, 2013, 46(9), 1537.
19 Du Y, Wang J, Chen J. Solar Energy, 2021, 217(3), 308.
20 Huang K, Xu T, Li G, et al. Construction and Building Materials, 2016, 115, 62.
21 Chu L, He L, Fwa, T. Construction and Building Materials, 2020, 243, 118250.
22 Li Y, Liu L, Sun L. Journal of Tongji University(Natural Science), 2020, 48(03), 377 (in Chinese).
李伊, 刘黎萍, 孙立军. 同济大学学报(自然科学版), 2020, 48(03), 377.
23 Chen J, Luo S, Li L, et al. Journal of Central South University(Natural Science), 2013, 44(04), 348 (in Chinese).
陈嘉祺, 罗苏平, 李亮, 等. 中南大学学报(自然科学版), 2013, 44(04), 348.
24 Ding X, Chen L, Ma T, et al. Construction and Building Materials, 2019, 203, 552.
25 JTG E20-2011公路工程沥青及沥青混合料试验规程, 人民交通出版社, 2011.
26 JTG/T 5521-2019公路沥青路面再生技术规范, 人民交通出版社, 2019.
27 Grunberg L, Nissan A. Nature, 1949, 164, 799.
28 Sun D, Zhu X, Sun G, et al. Fuel, 2018, 211, 609.
29 Xu M, Zhang Y. Construction and Building Materials, 2020, 261, 120673.
30 Farooq M, Mir M, Sharma A. Construction and Building Materials, 2018, 168, 61.
31 Han C, Ma T, Xu G, et al. International Journal of Pavement Engineering, 2022, 23(4), 985.
32 He L, Li G, Zheng Y, et al. Materials Reports, 2020, 34(19), 19083 (in Chinese).
何亮, 李冠男, 郑雨丰, 等. 材料导报, 2020, 34(19), 19083.