Journal of Jilin University(Engineering and Technology Edition) ›› 2025, Vol. 55 ›› Issue (2): 639-652.doi: 10.13229/j.cnki.jdxbgxb.20230420

Previous Articles    

Mesoscopic numerical modeling method of asphalt mix considering aggregate morphology

Teng-fei NIAN1,2(),Zhao HAN1,Zhi-qiang WEI1,Guo-wei WANG2,Jin-guo GE1,3,Ping LI1   

  1. 1.School of Civil Engineering，Lanzhou University of Technology，Lanzhou 730050，China
    2.Gansu Luqiao Shanjian Technology Co. ，Ltd. ，Lanzhou 730314，China
    3.School of Traffic and Transportation Engineering，Changsha University of Science and Technology，Changsha 410114，China
  • Received:2023-04-28 Online:2025-02-01 Published:2025-04-16

RICH HTML

 1   

PDF (PC)

175

Abstract:

In view of the limitations of using macroscopic homogeneous medium method and laboratory test to study the performance of asphalt mix， a numerical modeling method for meso-scale of asphalt mix is proposed. This study uses discrete element PFC software to establish aggregate with real morphology， and the discrete element models of asphalt mix were established by the scaling method. The meso-parameters of the Burgers model between asphalt mortar particles were determined by using the dynamic shear rheology （DSR） test and the bending beam rheology （BBR） test combined based on the time-temperature equivalence principle. The distribution of tensile and compressive stress in the specimen during the uniaxial compression test and Marshall splitting test. The results show that irregular morphology of Clump aggregate can be generated by filling the bounding box with ODEC algorithm. The radius of the floating points obtained by traversing the specimen is enlarged so that the distance between the floating points and the adjacent particles is reduced to generate contact. This method can be used to eliminate the floating points inside the discrete element specimens of asphalt mixes. The asphalt mix model built by using the discrete element software PFC can well simulate the mechanical behavior of the asphalt mix at low temperature. The results have great significance to carry out meso-mechanics research and numerical modeling calculation of asphalt mix.

Key words: road engineering, asphalt mix, aggregate morphology, discrete element, mesoscopic, numerical model

CLC Number: 

  • U414.1

Table 1

Base asphalt technical indicators"

技术指标测试值技术要求测试方法
针入度/（0.1 mm）6960~80T0604
15 ℃延度/cm71≥20T0605
软化点/℃47.5≥46T0606
RTFOT质量变化/%-0.03-0.8~0.8T0610
残留延度10 ℃/cm10≥6
残留针入度比/%62≥61

Table 2

AC-13 mix design results"

级配筛孔尺寸/mm
1613.29.54.752.361.180.60.30.150.075
级配上限100100856850382820158
合成级配10093.672.854.437.227.718.0713.388.86.8
级配下限100906838241510754

Fig.1

DSR test"

Table 3

Establishment of spherical particles of asphalt mix"

生成方法二维颗粒三维颗粒
BCK
BGK
BDK

Table 4

Filled bounding box based on ODEC algorithm generates irregular aggregates"

包围盒尺寸/mm二维颗粒三维颗粒
1.18~2.36
2.36~4.75
4.75~9.5
9.5~13.2
13.2~16

Table 5

Influence of filling parameters on the accuracy of generated particles"

D/（°）Rr
0.40.30.20.1
110
130
150
170

Table 6

Area range of aggregate under each particle size"

粒径范围/mm19~1616~13.213.2~9.59.5~4.754.75~2.362.36~1.18
当量圆面积范围/mm2283~201201~137137~7171~1818~41~4
当量圆的面积均值/mm224216910444112.5

Fig.2

Discrete element model of asphalt mix"

Table 7

The distribution of aggregate particles with different particle sizes in the discrete element model of AC-13 Marshall specimen"

粒径

/mm

二维模型三维模型
体积/cm3集料数/个体积/cm3集料数/个
160000
13.23.09212.848
9.513.451386.6799
4.7513.933784.31373
2.3613.9213982.492 739
1.187.0228745.9612 665
0.60000
总数51.41478312.2615 884

Fig.3

Particle contact in discrete element specimen"

Fig.4

Burgers model at particle contact"

Fig.5

DSR test parameters master curve"

Table 8

Fitting results of Burgers parameters of AC-13 asphalt mortar"

温度/℃

E1

/MPa

E2

/MPa

η1/

（MPa·s）

η2/

（MPa·s）

01 006.5362.75 223.44 037.9
10845.5176.42 882.71 950.7
15669121.11 825.21 411.3

Fig.6

Asphalt mortar Burgers model fitting results"

Table 9

Fitting results of negative temperature Burgers parameters of AC-13 asphalt mortar"

温度/℃E1/MPaE2/MPaη1/（MPa·s）η2/（MPa·s）
-101 505.2799.4152 993.735 548.5

Fig.7

Uniaxial compression test of asphalt mixture prism"

Fig.8

Simulation results of uniaxial compression of prism"

Fig.9

Marshall splitting test"

Fig.10

Comparison of Marshall splitting test results"

1 巨宏伟. 有限元强度折减法在边坡稳定性分析中的应用[J]. 市政技术, 2023, 41(3): 122-128.
Ju Hong-wei. Analysis of slope stability by finite element strength reduction method[J]. Journal of Municipal Technology, 2023, 41(3): 122-128.
2 Yu H N, Ge J G, Qian G P, et al. Evaluation on the rejuvenation and diffusion characteristics of waste cooking oil on aged SBS asphalt based on molecular dynamics method[J]. Journal of Cleaner Production, 2023, 406: No.136998.
3 Peng Y, Gao H, Lu X Y, et al. Micromechanical discrete element modeling of asphalt mixture shear fatigue performance[J]. Journal of Materials in Civil Engineering, 2020, 32(7): 04020183.
4 彭勇, 杨汉铎, 陆学元, 等. 基于离散元法的空隙特征对沥青混合料虚拟剪切疲劳寿命的影响[J]. 吉林大学学报: 工学版, 2021, 51(3): 956-964.
Peng Yong, Yang Han-duo, Lu Xue-yuan, et al. Effect of void characteristics on virtual shear fatigue life of asphalt mixtures using discrete element method[J]. Journal of Jilin University (Engineering and Technology Edition), 2021, 51(3): 956-964.
5 蔡旭, 张睿达, 陈莉, 等. 基于界面剪切试验的沥青混合料集料切向弹性刚度研究[J]. 中国公路学报, 2020, 33(10): 221-229.
Cai Xu, Zhang Rui-da, Chen Li, et al. Tangential elastic stiffness of asphalt mixture aggregate based on interfacial shear test[J]. China Journal of Highway and Transport, 2020, 33(10): 221-229.
6 Yang X C, Tang H Z, Cai X, et al. Evaluating reclaimed asphalt mixture homogeneity using force chain transferring stress efficiency[J]. Construction and Building Materials, 2023, 365: 130050.
7 You Z P, Liu Y, Dai Q L. Three-dimensional microstructural-based discrete element viscoelastic modeling of creep compliance tests for asphalt mixtures[J]. Journal of Materials in Civil Engineering, 2011, 23(1): 79-87.
8 谭忆秋, 邢超, 任俊达, 等. 基于颗粒堆积理论的沥青混合料细观结构特性研究[J]. 中国公路学报, 2017, 30(7): 1-8.
Tan Yi-qiu, Xing Chao, Ren Jun-da, et al. Research on mesostructured characteristics of asphalt mixture based on particle packing theory[J]. China Journal of Highway and Transport, 2017, 30(7): 1-8.
9 吴星怡. 基于CT图像的玄武岩纤维长度级配与沥青混合料骨架结构特征参数的关系研究[D]. 扬州: 扬州大学建筑科学与工程学院, 2021.
Wu Xing-yi. Study on the relationship between the basalt fiber mixing length gradation and asphalt mixture skeleton sructure characteristic parameters on CT images[D]. Yangzhou: School of Architectural Science and Engineering, Yangzhou University, 2021.
10 Kollmann J, Liu P F, Lu G Y, et al. Investigation of the microstructural fracture behaviour of asphalt mixtures using the finite element method[J]. Construction and Building Materials, 2019, 227: 117078.
11 马翔, 袁则瑜, 陈满军, 等. 基于数字图像的大空隙沥青混凝土离散元模型[J]. 江苏大学学报: 自然科学版, 2019, 40(6): 734-739.
Ma Xiang, Yuan Ze-yu, Chen Man-jun, et al. Discrete element model for porous asphalt concrete based on digital images[J]. Journal of Jiangsu Univercity (Nature Science Edition), 2019, 40(6): 734-739.
12 李浩, 张硕, 赵聚成. 基于物元理论模型的沥青路面使用性能评价[J]. 市政技术, 2022, 40(8): 214-219.
Li Hao, Zhang Shuo, Zhao Ju-cheng. Evaluation of asphalt pavement performance by matter-element theory model[J]. Journal of Municipal Technology, 2022, 40(8): 214-219.
13 梁何浩, 王端宜, 邓志刚, 等. 内聚力模型在泡沫沥青混合料离散元模拟中的应用[J]. 湖南大学学报: 自然科学版, 2019, 46(5): 115-123.
Liang He-hao, Wang Duan-yi, Deng Zhi-gang, et al. Application of cohesive zone model in discrete element simulation of foamed asphalt mixture[J]. Journal of Hunan University (Natural Sciences), 2019, 46(5): 115-123.
14 Nian T F, Ge J G, Li P, et al. Improved discrete element numerical simulation and experiment on low-temperature anti-cracking performance of asphalt mixture based on PFC2D[J]. Construction and Building Materials, 2021, 283: 122792.
15 Dondi G, Vignali V, Pettinari M, et al. Modeling the DSR complex shear modulus of asphalt binder using 3D discrete element approach[J]. Construction and Building Materials, 2013, 54: 236-246.
16 韩丁, 李阳, 刘东泽, 等. 表征真实骨料形态的三维数值骨料建模[J]. 建筑材料学报, 2017, 20(3): 339-344.
Han Ding, Li Yang, Liu Dong-ze, et al. 3D numerical modeling methods to characterize real aggregate shapes[J]. Journal of Building Materials, 2017, 20(3): 339-344.
17 Ren J L, Sun L. Generalized maxwell viscoelastic contact model-based discrete element method for characterizing low-temperature properties of asphalt concrete[J]. Journal of Materials in Civil Engineering, 2016, 28(2): 04015122.
[1] Wan-feng WEI,Ling-yun KONG,Wei-an XUAN,Fan YANG,Peng GUO. Review of characteristics of asphalt foaming and moisture sensitivity of warm mix mixtures [J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(1): 20-35.
[2] Feng-chun GUO,Hai-peng BI,Hai-tao WANG,Shu-zheng WU,Hong-yu YANG. Viscoelastic behavior of carbon nano powder modified asphalt based on time-temperature equivalence [J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(1): 221-229.
[3] Peng-shu XIE,Da CUI,Guo-qiang WANG,Kai LI. Working performance of vertical screw stirring mill based on discrete element method [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2423-2431.
[4] Guo-qiang DUN,Xing-peng WU,Xin-xin JI,Fu-li ZHANG,Wen-yi JI,Li-gui ZHU. Design and experiment of corn strip swing tube fertilizer spreader [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2697-2707.
[5] Ya-ning CUI,Chun-di SI,Tao-tao FAN,Fei WANG. Analysis on crack propagation of asphalt bridge deck pavement under water-force coupling action [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(7): 1988-1996.
[6] Rong LUO,Yu LIANG,Long-chang NIU,Ting-ting HUANG,Qiang MIAO. Threshold value of water stability evaluation index of asphalt mixture under multi-temperature conditions [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(7): 1966-1977.
[7] Ying-li GAO,Xiao-lei GU,Mei-jie LIAO,Xin-lang HU,Yu-tong XIE. Rheological properties and modification mechanism of SiO2 aerogel/reactive elastomer terpolymer/Polyphosphoric acid composite modified asphalt [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(7): 1978-1987.
[8] Yong-li XU,Xu-lan YANG,Ji-sen ZHOU,Song-han YANG,Ming-gang SUN. Asphalt fume composition of warm mix asphalt and smoke suppression performance of warm mix agent [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(6): 1701-1707.
[9] Zu-zhong LI,Meng-yuan LI,Wei-dong LIU,Xiao-xiao PANG,Hao Tang,Xue-lei ZHANG,Chen-yang MA. Surface modification of bagasse fibers and road performances of asphalt mixture [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(6): 1738-1745.
[10] Ya-zhen SUN,Bo-xin XUE,Yan SUN,Zhi-chen WANG,Jia-wei PAN. Mesoscale simulation of cracking behavior of asphalt mixture considering heterogeneity [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(6): 1708-1718.
[11] Xiao-kang ZHAO,Zhe HU,Zhen-xing NIU,Jiu-peng ZHANG,Jian-zhong PEI,Yong WEN. Meso-cracking behavior of cement-stabilized macadam materials based on heterogeneous model [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(5): 1258-1266.
[12] Tong-tong WAN,Hai-nian WANG,Wen-hua ZHENG,Po-nan FENG,Yu CHEN,Chen ZHANG. Thermal contraction deformation behavior of asphalt mixture overlay with coordination of unbound aggregate layer [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(4): 1045-1057.
[13] Jin XU,Zheng-huan CHEN,Qi-shuo LIAO,Zhan-ji ZHENG,He-shan ZHANG. Mental workload of drivers at high-density interchanges of freeways based on ECG data [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(10): 2807-2818.
[14] Ying-jun JIANG,Hong-jian SU,Ming-jie LI,Yan HE,Ya-wei BAI,Peng-fei WANG,Yu-hao BAO,Min-feng CAI. Durability of AC-16 asphalt mixture under vibration molding design [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(10): 2849-2858.
[15] Hong-zhou ZHU,Chun-li SU,Nai-peng TANG,Jun-yao WEI,Hong-jun SUN. Sampling and quantitative analysis method of emissions from crumb rubber modified asphalt [J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(10): 2922-2929.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd