Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests
The large-scale triaxial consolidated-drained (CD) and consolidated-undrained (CU) shear tests were carried out to investigate performances of the sericite quartz schist coarse-grained soil on stress-strain, deformation, and strength under four different confining pressure conditions. The test resul...
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Frontiers Media S.A.
2020-11-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2020.551232/full |
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| author | Hui-qing Zhang Feng Zhao Shi-qiang Cheng Yan-qing Zhang Ming-jie Gou Hong-jun Jing Hong-feng Zhi |
| author_facet | Hui-qing Zhang Feng Zhao Shi-qiang Cheng Yan-qing Zhang Ming-jie Gou Hong-jun Jing Hong-feng Zhi |
| author_sort | Hui-qing Zhang |
| collection | DOAJ |
| description | The large-scale triaxial consolidated-drained (CD) and consolidated-undrained (CU) shear tests were carried out to investigate performances of the sericite quartz schist coarse-grained soil on stress-strain, deformation, and strength under four different confining pressure conditions. The test results indicated that the stress-strain curve of sericite quartz schist was nonlinearity, compressive hardening and elastic-plastic. The shear strength envelope curve was better. In the triaxial CD shear test, the sericite quartz schist exhibited weak strain softening under different confining pressures. The sample showed shearing shrinkage at first and later dilatancy under confining pressures of 200, 400, and 600 kPa. When the confining pressure was 800 kPa, the sample showed a trend of shearing shrinkage. In the triaxial CU shear test, the sericite quartz schist exhibited strain hardening, presenting a tendency of shearing shrinkage at first and later dilatancy. It is more reasonable to take account of the cohesion of sericite quartz schist in practical engineering design by linear-regression analysis. |
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| language | English |
| last_indexed | 2024-12-14T11:21:12Z |
| publishDate | 2020-11-01 |
| publisher | Frontiers Media S.A. |
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| spelling | doaj.art-b1af4e371b2a4a33a8c1a4be7b8a49b52022-12-21T23:03:45ZengFrontiers Media S.A.Frontiers in Physics2296-424X2020-11-01810.3389/fphy.2020.551232551232Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear TestsHui-qing Zhang0Feng Zhao1Shi-qiang Cheng2Yan-qing Zhang3Ming-jie Gou4Hong-jun Jing5Hong-feng Zhi6Ankang Highway Bureau of Shaanxi Province, Ankang, ChinaAnkang Highway Bureau of Shaanxi Province, Ankang, ChinaAnkang Highway Bureau of Shaanxi Province, Ankang, ChinaSchool of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, ChinaSafety Technology Department, Shaanxi Future Energy and Chemical Co. LTD, Yulin, ChinaThe large-scale triaxial consolidated-drained (CD) and consolidated-undrained (CU) shear tests were carried out to investigate performances of the sericite quartz schist coarse-grained soil on stress-strain, deformation, and strength under four different confining pressure conditions. The test results indicated that the stress-strain curve of sericite quartz schist was nonlinearity, compressive hardening and elastic-plastic. The shear strength envelope curve was better. In the triaxial CD shear test, the sericite quartz schist exhibited weak strain softening under different confining pressures. The sample showed shearing shrinkage at first and later dilatancy under confining pressures of 200, 400, and 600 kPa. When the confining pressure was 800 kPa, the sample showed a trend of shearing shrinkage. In the triaxial CU shear test, the sericite quartz schist exhibited strain hardening, presenting a tendency of shearing shrinkage at first and later dilatancy. It is more reasonable to take account of the cohesion of sericite quartz schist in practical engineering design by linear-regression analysis.https://www.frontiersin.org/articles/10.3389/fphy.2020.551232/fullsoil mechanicscoarse-grained soildilatancy effectcharacteristics of deformation and strengthlarge-scale triaxial shear test |
| spellingShingle | Hui-qing Zhang Feng Zhao Shi-qiang Cheng Yan-qing Zhang Ming-jie Gou Hong-jun Jing Hong-feng Zhi Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests Frontiers in Physics soil mechanics coarse-grained soil dilatancy effect characteristics of deformation and strength large-scale triaxial shear test |
| title | Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests |
| title_full | Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests |
| title_fullStr | Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests |
| title_full_unstemmed | Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests |
| title_short | Study of Sericite Quartz Schist Coarse-Grained Soil by Large-Scale Triaxial Shear Tests |
| title_sort | study of sericite quartz schist coarse grained soil by large scale triaxial shear tests |
| topic | soil mechanics coarse-grained soil dilatancy effect characteristics of deformation and strength large-scale triaxial shear test |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2020.551232/full |
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