Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures
In order to optimize the skeletal properties of granular pavement materials, a numerical discrete element model for continuous and gap graded aggregate mixtures was developed using a step-by-step filling method. The penetration tests were conducted, and indexes such as penetrating resistance, averag...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/4903602 |
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| author | Dexiang Bao Chen Jiaqi Hao Wang Huanjiao Liu Jiupeng Zhang |
| author_facet | Dexiang Bao Chen Jiaqi Hao Wang Huanjiao Liu Jiupeng Zhang |
| author_sort | Dexiang Bao |
| collection | DOAJ |
| description | In order to optimize the skeletal properties of granular pavement materials, a numerical discrete element model for continuous and gap graded aggregate mixtures was developed using a step-by-step filling method. The penetration tests were conducted, and indexes such as penetrating resistance, average coordination number, California bearing ratio, and void ratio of coarse aggregates obtained from the tests were used to evaluate the skeleton structure and the stacking properties of aggregate mixtures. The results show that the skeleton structure of aggregate mixtures is closely related to the combination of particle size. Smaller difference in particle size leads to stronger interference effect. The parameters of stacking properties of continuous and gap graded aggregate mixtures are not significantly different in the natural stacking condition. However, gap graded aggregate mixtures are affected by external loads significantly due to structural reconstruction. |
| format | Article |
| id | doaj-art-e9fb2d7502fa4e0980cb6113885affce |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-e9fb2d7502fa4e0980cb6113885affce2025-08-20T02:21:53ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/49036024903602Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate MixturesDexiang Bao0Chen Jiaqi1Hao Wang2Huanjiao Liu3Jiupeng Zhang4School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, ChinaSchool of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaDepartment of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USAKey Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, Shaanxi 710064, ChinaKey Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, Shaanxi 710064, ChinaIn order to optimize the skeletal properties of granular pavement materials, a numerical discrete element model for continuous and gap graded aggregate mixtures was developed using a step-by-step filling method. The penetration tests were conducted, and indexes such as penetrating resistance, average coordination number, California bearing ratio, and void ratio of coarse aggregates obtained from the tests were used to evaluate the skeleton structure and the stacking properties of aggregate mixtures. The results show that the skeleton structure of aggregate mixtures is closely related to the combination of particle size. Smaller difference in particle size leads to stronger interference effect. The parameters of stacking properties of continuous and gap graded aggregate mixtures are not significantly different in the natural stacking condition. However, gap graded aggregate mixtures are affected by external loads significantly due to structural reconstruction.http://dx.doi.org/10.1155/2019/4903602 |
| spellingShingle | Dexiang Bao Chen Jiaqi Hao Wang Huanjiao Liu Jiupeng Zhang Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures Advances in Civil Engineering |
| title | Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures |
| title_full | Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures |
| title_fullStr | Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures |
| title_full_unstemmed | Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures |
| title_short | Characterizing Skeleton Structure and Stacking Properties of Continuous and Gap Graded Aggregate Mixtures |
| title_sort | characterizing skeleton structure and stacking properties of continuous and gap graded aggregate mixtures |
| url | http://dx.doi.org/10.1155/2019/4903602 |
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