Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material
To investigate the influence of mudstone content and curing age on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, using waste sandstone from open pit coal mine stripping was used as aggregate and mudstone and slag were used as cementing mat...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Safety in Coal Mines
2025-06-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20241448 |
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| author | Yu ZHANG Yuanguang CHEN Qibo PAN Yafei ZHANG Tian CHEN Pengjiao ZHANG Jiangsen ZHU |
| author_facet | Yu ZHANG Yuanguang CHEN Qibo PAN Yafei ZHANG Tian CHEN Pengjiao ZHANG Jiangsen ZHU |
| author_sort | Yu ZHANG |
| collection | DOAJ |
| description | To investigate the influence of mudstone content and curing age on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, using waste sandstone from open pit coal mine stripping was used as aggregate and mudstone and slag were used as cementing materials to make mudstone-slag-based water barrier materials. Uniaxial compression tests, gas permeability tests, and scanning electron microscopy tests were conducted on mudstone-slag-based water barrier materials, water barrier materials with mudstone mass fraction of 20%, 40%, 60%, and 80%, respectively. Based on the uniaxial compressive strength and permeability obtained from the test, we investigated the influence mechanism of mudstone content on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, analyzed the evolution law of the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials under different curing age conditions, and supplemented with scanning electron microscope tests, studied the characteristics and morphological features of different cementation products in mudstone-slag-based water barrier materials, and studied the influence of mudstone proportion on the macroscopic damage forms of mudstone-slag-based water barrier materials. The influence of the content of mudstone on the macroscopic damage form of mudstone-slag-based water barrier material was investigated. The results show that the uniaxial compressive strength and permeability of mudstone-slag-based water barrier materials decrease linearly with the increase of mudstone content. With the increase of curing age, the uniaxial compressive strength of the mudstone-slag-based water barrier material increases exponentially, while the permeability decreases exponentially. With the increase of the mudstone content, the gel in mudstone-slag-based water barrier material is gradually transformed from the slag gel with high strength, strong brittleness and many pores to the dense mudstone gel without microcracks. As the content of mudstone increases, the overall damage of mudstone-slag-based water barrier materials decreases and the integrity of the specimens increases; as the curing age increases, the damage of mudstone-slag-based water barrier materials increases and the integrity of the specimens decreases. |
| format | Article |
| id | doaj-art-a7a8dbaf98264832a16e2c84375f1576 |
| institution | DOAJ |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-a7a8dbaf98264832a16e2c84375f15762025-08-20T03:21:22ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-06-0156620221010.13347/j.cnki.mkaq.20241448gMKAQ20241448Mechanical properties and permeability characteristics of mudstone-slag-based water barrier materialYu ZHANG0Yuanguang CHEN1Qibo PAN2Yafei ZHANG3Tian CHEN4Pengjiao ZHANG5Jiangsen ZHU6Haerwusu Open-pit Coal Mine, CHN Energy Group Jungar Energy Co., Ltd., Ordos 010300, ChinaState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaHaerwusu Open-pit Coal Mine, CHN Energy Group Jungar Energy Co., Ltd., Ordos 010300, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaCHN Energy Group Jungar Energy Co., Ltd., Ordos 010300, ChinaWuhan Marine Machinery Plant Co., Ltd., Wuhan 430084, ChinaTo investigate the influence of mudstone content and curing age on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, using waste sandstone from open pit coal mine stripping was used as aggregate and mudstone and slag were used as cementing materials to make mudstone-slag-based water barrier materials. Uniaxial compression tests, gas permeability tests, and scanning electron microscopy tests were conducted on mudstone-slag-based water barrier materials, water barrier materials with mudstone mass fraction of 20%, 40%, 60%, and 80%, respectively. Based on the uniaxial compressive strength and permeability obtained from the test, we investigated the influence mechanism of mudstone content on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, analyzed the evolution law of the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials under different curing age conditions, and supplemented with scanning electron microscope tests, studied the characteristics and morphological features of different cementation products in mudstone-slag-based water barrier materials, and studied the influence of mudstone proportion on the macroscopic damage forms of mudstone-slag-based water barrier materials. The influence of the content of mudstone on the macroscopic damage form of mudstone-slag-based water barrier material was investigated. The results show that the uniaxial compressive strength and permeability of mudstone-slag-based water barrier materials decrease linearly with the increase of mudstone content. With the increase of curing age, the uniaxial compressive strength of the mudstone-slag-based water barrier material increases exponentially, while the permeability decreases exponentially. With the increase of the mudstone content, the gel in mudstone-slag-based water barrier material is gradually transformed from the slag gel with high strength, strong brittleness and many pores to the dense mudstone gel without microcracks. As the content of mudstone increases, the overall damage of mudstone-slag-based water barrier materials decreases and the integrity of the specimens increases; as the curing age increases, the damage of mudstone-slag-based water barrier materials increases and the integrity of the specimens decreases.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20241448mudstone-slag-basedwater barrier materialmechanical propertiespermeability characteristicsmicrostructure |
| spellingShingle | Yu ZHANG Yuanguang CHEN Qibo PAN Yafei ZHANG Tian CHEN Pengjiao ZHANG Jiangsen ZHU Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material Meikuang Anquan mudstone-slag-based water barrier material mechanical properties permeability characteristics microstructure |
| title | Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material |
| title_full | Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material |
| title_fullStr | Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material |
| title_full_unstemmed | Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material |
| title_short | Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material |
| title_sort | mechanical properties and permeability characteristics of mudstone slag based water barrier material |
| topic | mudstone-slag-based water barrier material mechanical properties permeability characteristics microstructure |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20241448 |
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