Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age
The strength evolution law of concentrated full tailings is closely related to the storage construction method, especially the growth law of shear strength with curing age. This study aims to investigate the influence of curing materials on the shear strength of full tailings and reveal the change l...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-04-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1158715/full |
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| author | Sha Wang Sha Wang Guodong Mei Guodong Mei Weixiang Wang Weixiang Wang Yali Wang Yali Wang Yiyuan Cui Yiyuan Cui Lijie Guo Lijie Guo Yifan Chu Yifan Chu |
| author_facet | Sha Wang Sha Wang Guodong Mei Guodong Mei Weixiang Wang Weixiang Wang Yali Wang Yali Wang Yiyuan Cui Yiyuan Cui Lijie Guo Lijie Guo Yifan Chu Yifan Chu |
| author_sort | Sha Wang |
| collection | DOAJ |
| description | The strength evolution law of concentrated full tailings is closely related to the storage construction method, especially the growth law of shear strength with curing age. This study aims to investigate the influence of curing materials on the shear strength of full tailings and reveal the change law of the shear strength of concentrated full tailings with the curing age. Therefore, we carried out a comparative triaxial shear test between pure full tailings and concentrated full tailings with different curing ages. The test results show that concentrated full tailings had a 70.7% higher cohesion and a 10% larger internal friction angle (IFA) than that of pure full tailings at the age of 0 days. Moreover, the concentrated full tailings cured for 3 days had a 170.2% higher cohesion and a 12.1% larger IFA than that cured for 0 days. In addition, the concentrated full tailings cured for 7 days had a 149.4% higher cohesion and a 12.1% larger IFA than that cured for 0 days. The stress-strain curve exhibits that the shear strength of full tailings is significantly influenced by the curing material and curing age. The stress-strain curve gradually moved from strain hardening to strain softening as the curing age increased, and the failure curve had two steps. This indicates that the specimen still has a certain shear capacity despite having a shear zone. The entire specimen instantly fails when the strain exceeds that capacity. The results of this study can be used as scientific bases for the design and construction of the surface storage structures of concentrated full tailings. |
| first_indexed | 2024-04-09T17:01:21Z |
| format | Article |
| id | doaj.art-037da4f7c91b4816b062835bc159e404 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-09T17:01:21Z |
| publishDate | 2023-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-037da4f7c91b4816b062835bc159e4042023-04-21T04:32:33ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-04-011110.3389/feart.2023.11587151158715Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing ageSha Wang0Sha Wang1Guodong Mei2Guodong Mei3Weixiang Wang4Weixiang Wang5Yali Wang6Yali Wang7Yiyuan Cui8Yiyuan Cui9Lijie Guo10Lijie Guo11Yifan Chu12Yifan Chu13BGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaNational Centre for International Research on Green Metal Mining, Beijing, ChinaThe strength evolution law of concentrated full tailings is closely related to the storage construction method, especially the growth law of shear strength with curing age. This study aims to investigate the influence of curing materials on the shear strength of full tailings and reveal the change law of the shear strength of concentrated full tailings with the curing age. Therefore, we carried out a comparative triaxial shear test between pure full tailings and concentrated full tailings with different curing ages. The test results show that concentrated full tailings had a 70.7% higher cohesion and a 10% larger internal friction angle (IFA) than that of pure full tailings at the age of 0 days. Moreover, the concentrated full tailings cured for 3 days had a 170.2% higher cohesion and a 12.1% larger IFA than that cured for 0 days. In addition, the concentrated full tailings cured for 7 days had a 149.4% higher cohesion and a 12.1% larger IFA than that cured for 0 days. The stress-strain curve exhibits that the shear strength of full tailings is significantly influenced by the curing material and curing age. The stress-strain curve gradually moved from strain hardening to strain softening as the curing age increased, and the failure curve had two steps. This indicates that the specimen still has a certain shear capacity despite having a shear zone. The entire specimen instantly fails when the strain exceeds that capacity. The results of this study can be used as scientific bases for the design and construction of the surface storage structures of concentrated full tailings.https://www.frontiersin.org/articles/10.3389/feart.2023.1158715/fullconcentrated full tailingstriaxial shear testcuring ageshear strengthstress-strain curve |
| spellingShingle | Sha Wang Sha Wang Guodong Mei Guodong Mei Weixiang Wang Weixiang Wang Yali Wang Yali Wang Yiyuan Cui Yiyuan Cui Lijie Guo Lijie Guo Yifan Chu Yifan Chu Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age Frontiers in Earth Science concentrated full tailings triaxial shear test curing age shear strength stress-strain curve |
| title | Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| title_full | Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| title_fullStr | Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| title_full_unstemmed | Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| title_short | Experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| title_sort | experimental study of triaxial shear features of concentrated full tailings considering the effect of curing age |
| topic | concentrated full tailings triaxial shear test curing age shear strength stress-strain curve |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1158715/full |
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