Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method
Asphalt mixture was a granular material, and traditional mechanical testing methods were difficult to reveal the failure mechanism. To evaluate the micromechanical behavior of asphalt mixture in the failure process, the DEM (Discrete Element Method) model of the uniaxial compression test was establi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522009056 |
| _version_ | 1827920583718862848 |
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| author | Xuan Zhu Huanan Yu Guoping Qian Ding Yao Wan Dai Hu Zhang Jie Li Huiping Zhong |
| author_facet | Xuan Zhu Huanan Yu Guoping Qian Ding Yao Wan Dai Hu Zhang Jie Li Huiping Zhong |
| author_sort | Xuan Zhu |
| collection | DOAJ |
| description | Asphalt mixture was a granular material, and traditional mechanical testing methods were difficult to reveal the failure mechanism. To evaluate the micromechanical behavior of asphalt mixture in the failure process, the DEM (Discrete Element Method) model of the uniaxial compression test was established. The virtual aggregate particle database with real morphology properties was constructed, and the linear parallel bond model was used to simulate the adhesion of asphalt. In the DEM model of the asphalt mixture failure process, the movement of asphalt mortar and coarse aggregate was evaluated, and the Discrete Fracture Network (DFN) was proposed to represent the microcrack. Finally, the three-dimensional spherical coordinate histogram was used to analyze the evolution of magnitude and direction of the coarse aggregate skeleton contact force. It found that the movement of coarse aggregate was less than that of asphalt mortar in the process of the uniaxial compression test, and the coarse aggregate movement was affected by its particle size and location. The result also found that although the adhesive and cohesion failure could occur at the same time, the adhesive failure was less than cohesion failure in the early stage of the uniaxial compression test, and the aggregate with larger particle size could reduce the generation of adhesive failure. Compared with the magnitude of coarse aggregate skeleton contact force, the change of direction was the main reason for a decrease in stress when the asphalt mixture specimen exceeded the peak strength. |
| first_indexed | 2024-03-13T04:12:43Z |
| format | Article |
| id | doaj.art-9dbf12baa6fb4ebbba5325c1b373769d |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:12:43Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-9dbf12baa6fb4ebbba5325c1b373769d2023-06-21T06:53:10ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e01773Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element MethodXuan Zhu0Huanan Yu1Guoping Qian2Ding Yao3Wan Dai4Hu Zhang5Jie Li6Huiping Zhong7School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China; National Engineering Research Center for Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China; Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, Changsha University of Science & Technology, Changsha 410114, China; Correspondence to: Changsha University of Science and Technology, Changsha 410114, China.School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China; National Engineering Research Center for Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China; Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaHunan Expressway Group Co., Ltd, Changsha 410026, ChinaSany Automobile Manufacturing Co., Ltd, Changsha 410100, ChinaAsphalt mixture was a granular material, and traditional mechanical testing methods were difficult to reveal the failure mechanism. To evaluate the micromechanical behavior of asphalt mixture in the failure process, the DEM (Discrete Element Method) model of the uniaxial compression test was established. The virtual aggregate particle database with real morphology properties was constructed, and the linear parallel bond model was used to simulate the adhesion of asphalt. In the DEM model of the asphalt mixture failure process, the movement of asphalt mortar and coarse aggregate was evaluated, and the Discrete Fracture Network (DFN) was proposed to represent the microcrack. Finally, the three-dimensional spherical coordinate histogram was used to analyze the evolution of magnitude and direction of the coarse aggregate skeleton contact force. It found that the movement of coarse aggregate was less than that of asphalt mortar in the process of the uniaxial compression test, and the coarse aggregate movement was affected by its particle size and location. The result also found that although the adhesive and cohesion failure could occur at the same time, the adhesive failure was less than cohesion failure in the early stage of the uniaxial compression test, and the aggregate with larger particle size could reduce the generation of adhesive failure. Compared with the magnitude of coarse aggregate skeleton contact force, the change of direction was the main reason for a decrease in stress when the asphalt mixture specimen exceeded the peak strength.http://www.sciencedirect.com/science/article/pii/S2214509522009056Asphalt mixtureMicrocracks evolutionCoarse aggregate movementContact force chain evolutionDiscrete Element Method |
| spellingShingle | Xuan Zhu Huanan Yu Guoping Qian Ding Yao Wan Dai Hu Zhang Jie Li Huiping Zhong Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method Case Studies in Construction Materials Asphalt mixture Microcracks evolution Coarse aggregate movement Contact force chain evolution Discrete Element Method |
| title | Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method |
| title_full | Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method |
| title_fullStr | Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method |
| title_full_unstemmed | Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method |
| title_short | Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method |
| title_sort | evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on discrete element method |
| topic | Asphalt mixture Microcracks evolution Coarse aggregate movement Contact force chain evolution Discrete Element Method |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522009056 |
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