Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting
To improve the service life of a semirigid base asphalt pavement and prolong its service cycle, it is imperative to conduct long-term performance research before and after pavement disease repair. This study proposes a fatigue damage model for pavement and polymer materials and uses the finite eleme...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6658943 |
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| _version_ | 1832560054569533440 |
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| author | Bei Zhang Xu Zhang Yanhui Zhong Xiaolong Li Meimei Hao Xianwei Sang Xiaoliang Wang Jianyang Liu |
| author_facet | Bei Zhang Xu Zhang Yanhui Zhong Xiaolong Li Meimei Hao Xianwei Sang Xiaoliang Wang Jianyang Liu |
| author_sort | Bei Zhang |
| collection | DOAJ |
| description | To improve the service life of a semirigid base asphalt pavement and prolong its service cycle, it is imperative to conduct long-term performance research before and after pavement disease repair. This study proposes a fatigue damage model for pavement and polymer materials and uses the finite element method to establish a three-dimensional numerical model of a semirigid base asphalt pavement structure. Moreover, it compares and analyzes the mechanical response and fatigue damage of this pavement before and after polymer repair. The evolution law is verified by indoor fatigue tests. The results show that, under a standard load of 0.7 MPa, the vertical displacement and the Mises stress of the vacant position after the polymer repair are reduced by 61% and 69%, respectively. Under a cyclic load of 1.2 MPa, the number of load actions increases from 500,000 to more than 5 million, and the fatigue damage factor of the polymer is reduced by 29%. With the increase in the number of fatigue test loads, the cumulative evolution trend of the fatigue damage is basically consistent with the results of the numerical simulation, which verifies the rationality of the numerical model. This research is relevant for providing a reference for extending the service life of expressways and improving the technical level of expressway maintenance. |
| format | Article |
| id | doaj-art-a7caf419f9f648efa316331ec35311e0 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a7caf419f9f648efa316331ec35311e02025-02-03T01:28:28ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66589436658943Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer GroutingBei Zhang0Xu Zhang1Yanhui Zhong2Xiaolong Li3Meimei Hao4Xianwei Sang5Xiaoliang Wang6Jianyang Liu7College of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaTo improve the service life of a semirigid base asphalt pavement and prolong its service cycle, it is imperative to conduct long-term performance research before and after pavement disease repair. This study proposes a fatigue damage model for pavement and polymer materials and uses the finite element method to establish a three-dimensional numerical model of a semirigid base asphalt pavement structure. Moreover, it compares and analyzes the mechanical response and fatigue damage of this pavement before and after polymer repair. The evolution law is verified by indoor fatigue tests. The results show that, under a standard load of 0.7 MPa, the vertical displacement and the Mises stress of the vacant position after the polymer repair are reduced by 61% and 69%, respectively. Under a cyclic load of 1.2 MPa, the number of load actions increases from 500,000 to more than 5 million, and the fatigue damage factor of the polymer is reduced by 29%. With the increase in the number of fatigue test loads, the cumulative evolution trend of the fatigue damage is basically consistent with the results of the numerical simulation, which verifies the rationality of the numerical model. This research is relevant for providing a reference for extending the service life of expressways and improving the technical level of expressway maintenance.http://dx.doi.org/10.1155/2021/6658943 |
| spellingShingle | Bei Zhang Xu Zhang Yanhui Zhong Xiaolong Li Meimei Hao Xianwei Sang Xiaoliang Wang Jianyang Liu Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting Advances in Civil Engineering |
| title | Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting |
| title_full | Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting |
| title_fullStr | Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting |
| title_full_unstemmed | Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting |
| title_short | Research on Fatigue Model of Semi-Rigid Base Asphalt Pavement before and after Polymer Grouting |
| title_sort | research on fatigue model of semi rigid base asphalt pavement before and after polymer grouting |
| url | http://dx.doi.org/10.1155/2021/6658943 |
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