Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model
Cemented tailings rock backfill (CTRB) is a promising material for recycling mining solid waste and ensuring the stability of underground stopes. However, a comprehensive understanding of the fracture behaviour of CTRB remains limited. This study developed a two-dimensional mesoscale model of CTRB u...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525001548 |
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| author | Chaoyi Yang Hang Lin Rugao Gao Zhengrong Li Dengjun Gan Mingwu Liu Qifan Ren |
| author_facet | Chaoyi Yang Hang Lin Rugao Gao Zhengrong Li Dengjun Gan Mingwu Liu Qifan Ren |
| author_sort | Chaoyi Yang |
| collection | DOAJ |
| description | Cemented tailings rock backfill (CTRB) is a promising material for recycling mining solid waste and ensuring the stability of underground stopes. However, a comprehensive understanding of the fracture behaviour of CTRB remains limited. This study developed a two-dimensional mesoscale model of CTRB utilizing the concrete damage plasticity material model to simulate the behaviour of cemented tailings backfill (CTB). An experimental program was conducted to determine the mechanical parameters and mesostructure of CTB, as well as the mechanical response of CTRB. The experimental results validated the feasibility of the mesoscale modelling approach and confirmed its consistency with numerical predictions. The study investigated the effects of mix design variables, including waste rock content (WRC), cement-to-tailing ratio of CTB, and waste rock gradation, on damage evolution, failure patterns, strength, and elasticity. The potential application in real scenarios is also discussed. The key findings include: (1) incorporating waste rock significantly enhances elasticity but slightly reduces strength; (2) a lower cement-to-tailing ratio leads to compressive damage playing a more critical role in failure patterns; and (3) increasing the maximum particle diameter negatively impacts strength. Lastly, a formula correlating the attributes of meso-components was proposed to predict the elasticity of CTRB. |
| format | Article |
| id | doaj-art-a4a0f283fa704b3ca63f0d3428c5aa34 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-a4a0f283fa704b3ca63f0d3428c5aa342025-02-09T05:00:28ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04356Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity modelChaoyi Yang0Hang Lin1Rugao Gao2Zhengrong Li3Dengjun Gan4Mingwu Liu5Qifan Ren6School of Resources and Safety Engineering, Central South University, Changsha 410083, China; Yunnan Diqing Nonferrous Metals Co., Ltd., Shangri-La, Yunnan 674400, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaYunnan Diqing Nonferrous Metals Co., Ltd., Shangri-La, Yunnan 674400, ChinaYunnan Diqing Nonferrous Metals Co., Ltd., Shangri-La, Yunnan 674400, ChinaYunnan Diqing Nonferrous Metals Co., Ltd., Shangri-La, Yunnan 674400, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, China; Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Corresponding author at: School of Resources and Safety Engineering, Central South University, Changsha 410083, China.Cemented tailings rock backfill (CTRB) is a promising material for recycling mining solid waste and ensuring the stability of underground stopes. However, a comprehensive understanding of the fracture behaviour of CTRB remains limited. This study developed a two-dimensional mesoscale model of CTRB utilizing the concrete damage plasticity material model to simulate the behaviour of cemented tailings backfill (CTB). An experimental program was conducted to determine the mechanical parameters and mesostructure of CTB, as well as the mechanical response of CTRB. The experimental results validated the feasibility of the mesoscale modelling approach and confirmed its consistency with numerical predictions. The study investigated the effects of mix design variables, including waste rock content (WRC), cement-to-tailing ratio of CTB, and waste rock gradation, on damage evolution, failure patterns, strength, and elasticity. The potential application in real scenarios is also discussed. The key findings include: (1) incorporating waste rock significantly enhances elasticity but slightly reduces strength; (2) a lower cement-to-tailing ratio leads to compressive damage playing a more critical role in failure patterns; and (3) increasing the maximum particle diameter negatively impacts strength. Lastly, a formula correlating the attributes of meso-components was proposed to predict the elasticity of CTRB.http://www.sciencedirect.com/science/article/pii/S2214509525001548Cemented tailings rock backfillMechanical behaviour analysisFracture mechanismMesoscale modellingDamage plastic model |
| spellingShingle | Chaoyi Yang Hang Lin Rugao Gao Zhengrong Li Dengjun Gan Mingwu Liu Qifan Ren Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model Case Studies in Construction Materials Cemented tailings rock backfill Mechanical behaviour analysis Fracture mechanism Mesoscale modelling Damage plastic model |
| title | Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model |
| title_full | Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model |
| title_fullStr | Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model |
| title_full_unstemmed | Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model |
| title_short | Mechanical behaviour analysis of cemented tailings rock backfill materials: An insight from mesoscale modelling coupled with damage plasticity model |
| title_sort | mechanical behaviour analysis of cemented tailings rock backfill materials an insight from mesoscale modelling coupled with damage plasticity model |
| topic | Cemented tailings rock backfill Mechanical behaviour analysis Fracture mechanism Mesoscale modelling Damage plastic model |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525001548 |
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