Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates
Crushing resistance of coarse aggregate is the key to the stability and durability of the skeleton structure of permeable asphalt (PA) mixture. To determine the technical requirements of crushing value of coarse aggregate used in PA mixture, step-loading compression tests were conducted on the mixtu...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/1261368 |
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| author | Tian Xiaoge Wang Xiaofei Yuan Huitong |
| author_facet | Tian Xiaoge Wang Xiaofei Yuan Huitong |
| author_sort | Tian Xiaoge |
| collection | DOAJ |
| description | Crushing resistance of coarse aggregate is the key to the stability and durability of the skeleton structure of permeable asphalt (PA) mixture. To determine the technical requirements of crushing value of coarse aggregate used in PA mixture, step-loading compression tests were conducted on the mixtures of PA-13 and a control asphalt mixture AC-13, respectively. Virtual compression tests under the same loading conditions were simulated on the corresponding digital specimens with PFC2D®. By comparing the load-deformation curves obtained from the actual tests and virtual simulation, the values of the microscopic parameters of the two graded mixtures were obtained through trial calculation and adjustment. Then, the states of contact stress between aggregates in PA-13 and AC-13 mixtures under the standard crushing pressure (400 kN) were analyzed with PFC2D®. It was found that the average normal contact stress and the maximum normal contact stress between aggregates in PA-13 were 1.71 times and 1.28 times larger than those in AC-13, respectively. The crushing values of two different lithologic coarse aggregates were measured under different pressures, 400 kN or 600 kN, respectively. The crushing value criterion of coarse aggregates used in the PA mixture was suggested to be no greater than 16% after comparative analysis. |
| format | Article |
| id | doaj-art-fc47035765c74ac3a58cec03c01e34e7 |
| institution | Kabale University |
| issn | 2314-4904 2314-4912 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj-art-fc47035765c74ac3a58cec03c01e34e72025-02-03T06:07:38ZengWileyJournal of Engineering2314-49042314-49122020-01-01202010.1155/2020/12613681261368Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between AggregatesTian Xiaoge0Wang Xiaofei1Yuan Huitong2State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha, Hunan 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, ChinaCrushing resistance of coarse aggregate is the key to the stability and durability of the skeleton structure of permeable asphalt (PA) mixture. To determine the technical requirements of crushing value of coarse aggregate used in PA mixture, step-loading compression tests were conducted on the mixtures of PA-13 and a control asphalt mixture AC-13, respectively. Virtual compression tests under the same loading conditions were simulated on the corresponding digital specimens with PFC2D®. By comparing the load-deformation curves obtained from the actual tests and virtual simulation, the values of the microscopic parameters of the two graded mixtures were obtained through trial calculation and adjustment. Then, the states of contact stress between aggregates in PA-13 and AC-13 mixtures under the standard crushing pressure (400 kN) were analyzed with PFC2D®. It was found that the average normal contact stress and the maximum normal contact stress between aggregates in PA-13 were 1.71 times and 1.28 times larger than those in AC-13, respectively. The crushing values of two different lithologic coarse aggregates were measured under different pressures, 400 kN or 600 kN, respectively. The crushing value criterion of coarse aggregates used in the PA mixture was suggested to be no greater than 16% after comparative analysis.http://dx.doi.org/10.1155/2020/1261368 |
| spellingShingle | Tian Xiaoge Wang Xiaofei Yuan Huitong Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates Journal of Engineering |
| title | Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates |
| title_full | Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates |
| title_fullStr | Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates |
| title_full_unstemmed | Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates |
| title_short | Standard of Crushing Value of Coarse Aggregates for Permeable Asphalt Mixture Based on Contact Stress between Aggregates |
| title_sort | standard of crushing value of coarse aggregates for permeable asphalt mixture based on contact stress between aggregates |
| url | http://dx.doi.org/10.1155/2020/1261368 |
| work_keys_str_mv | AT tianxiaoge standardofcrushingvalueofcoarseaggregatesforpermeableasphaltmixturebasedoncontactstressbetweenaggregates AT wangxiaofei standardofcrushingvalueofcoarseaggregatesforpermeableasphaltmixturebasedoncontactstressbetweenaggregates AT yuanhuitong standardofcrushingvalueofcoarseaggregatesforpermeableasphaltmixturebasedoncontactstressbetweenaggregates |