Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials
This paper delves into the modification mechanism and deterioration mechanism of basalt fiber (BF) on the sulfate resistance of graphite tailings (GT) cement-based materials. Initially, the comprehensive properties of basalt fiber modified graphite tailings cement mortar (BFM-GTCM) under different s...
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| Format: | Article |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423023220 |
| _version_ | 1797646573405995008 |
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| author | Yu Zhang Ben Li Ying Yu Chen Zhang Hu Xu Kaihang Li Canhao Zhao Jize Mao Yuqing Liu |
| author_facet | Yu Zhang Ben Li Ying Yu Chen Zhang Hu Xu Kaihang Li Canhao Zhao Jize Mao Yuqing Liu |
| author_sort | Yu Zhang |
| collection | DOAJ |
| description | This paper delves into the modification mechanism and deterioration mechanism of basalt fiber (BF) on the sulfate resistance of graphite tailings (GT) cement-based materials. Initially, the comprehensive properties of basalt fiber modified graphite tailings cement mortar (BFM-GTCM) under different sulfate cycles, such as apparent morphology, water absorption and mechanical characteristics were investigated. Subsequently, the relationship between the evolution of microstructure, interface stability, pore structure, chemical composition and functional groups of BFM-GTCM and its resistance to sulfate erosion under different cycles was revealed by various microscopic characterization and analysis methods (SEM/XRD/MIP/FTIR/DSI). Simultaneously, a corrosion coefficient-pore structure relationship model was also put forth based on multivariate regression theory, and the mechanism enhancing BFM-GTCM resistance to sulfate attack was investigated. The results demonstrated that a suitable blend of BF and GT can prevent sulfate ion penetration, significantly slow down the generation of corrosion products (AFt and gypsum) in cement mortar during sulfate attack, postpone the occurrence of new cracks and the growth of existing ones, improve pore structure, and significantly lessen the degree of durability degradation of BF-GTCM. Among them, 0.3% BF addition and 20% GT replacement was the ideal ratio. |
| first_indexed | 2024-03-11T15:04:33Z |
| format | Article |
| id | doaj.art-372e0f9ac83347b49469d4b349c8c90a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:04:33Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-372e0f9ac83347b49469d4b349c8c90a2023-10-30T06:04:55ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012687578775Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materialsYu Zhang0Ben Li1Ying Yu2Chen Zhang3Hu Xu4Kaihang Li5Canhao Zhao6Jize Mao7Yuqing Liu8Advanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, ChinaAdvanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, China; Corresponding author.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, ChinaAdvanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, ChinaAdvanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, ChinaAdvanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaAdvanced and Sustainable Infrastructure Materials Group, School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, ChinaThis paper delves into the modification mechanism and deterioration mechanism of basalt fiber (BF) on the sulfate resistance of graphite tailings (GT) cement-based materials. Initially, the comprehensive properties of basalt fiber modified graphite tailings cement mortar (BFM-GTCM) under different sulfate cycles, such as apparent morphology, water absorption and mechanical characteristics were investigated. Subsequently, the relationship between the evolution of microstructure, interface stability, pore structure, chemical composition and functional groups of BFM-GTCM and its resistance to sulfate erosion under different cycles was revealed by various microscopic characterization and analysis methods (SEM/XRD/MIP/FTIR/DSI). Simultaneously, a corrosion coefficient-pore structure relationship model was also put forth based on multivariate regression theory, and the mechanism enhancing BFM-GTCM resistance to sulfate attack was investigated. The results demonstrated that a suitable blend of BF and GT can prevent sulfate ion penetration, significantly slow down the generation of corrosion products (AFt and gypsum) in cement mortar during sulfate attack, postpone the occurrence of new cracks and the growth of existing ones, improve pore structure, and significantly lessen the degree of durability degradation of BF-GTCM. Among them, 0.3% BF addition and 20% GT replacement was the ideal ratio.http://www.sciencedirect.com/science/article/pii/S2238785423023220Basalt fiberGraphite tailingsCorrosion resistance to sulfatesRelational modelEnhancement mechanisms |
| spellingShingle | Yu Zhang Ben Li Ying Yu Chen Zhang Hu Xu Kaihang Li Canhao Zhao Jize Mao Yuqing Liu Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials Journal of Materials Research and Technology Basalt fiber Graphite tailings Corrosion resistance to sulfates Relational model Enhancement mechanisms |
| title | Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials |
| title_full | Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials |
| title_fullStr | Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials |
| title_full_unstemmed | Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials |
| title_short | Sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement-based materials |
| title_sort | sulfate resistance and degradation mechanism of basalt fiber modified graphite tailings cement based materials |
| topic | Basalt fiber Graphite tailings Corrosion resistance to sulfates Relational model Enhancement mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423023220 |
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