Performance of composite alkali-activated slag for coal seam floor grouting material
In response to the high cost and environmental concerns associated with cement-based grouting materials in the coal seam floor grouting reinforcement project in Handan-Xingtai Mining Area, a solution is proposed using alkali-activated slag grouting materials with slag as the main raw material and Ca...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Safety in Coal Mines
2025-08-01
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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.20240299 |
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| author | Xinwang LI Rongyuan WU Lichao CHENG Yifei QI Lei LI Li LI |
| author_facet | Xinwang LI Rongyuan WU Lichao CHENG Yifei QI Lei LI Li LI |
| author_sort | Xinwang LI |
| collection | DOAJ |
| description | In response to the high cost and environmental concerns associated with cement-based grouting materials in the coal seam floor grouting reinforcement project in Handan-Xingtai Mining Area, a solution is proposed using alkali-activated slag grouting materials with slag as the main raw material and CaO and NaOH as activators. By employing orthogonal test, two-factor analysis of variance, and establishing a 3D visualization model, the study reveals the influence of NaOH and CaO dosages on the viscosity, setting time, water release rate, and compressive strength of the alkali-activated slag grouting materials. Combining with practical engineering considerations, an optimized mixing ratio scheme is proposed. The results indicate that the optimal mixing ratio is achieved with NaOH dosage of 1.0% and CaO dosage of 2.0%. At this ratio, the viscosity of the alkali-activated slag grouting material is 19.53 s, setting time is 756 min, bleeding rate is 11.00%, and compressive strengths at 3 d, 7 d, and 28 d are 3.01 MPa, 4.14 MPa, and 7.00 MPa, respectively. The alkali-activated slag grouting material at the optimal ratio meets both the performance and economic requirements of the project. |
| format | Article |
| id | doaj-art-e8e870bc79fd4afdb4bc81d74fa05c1f |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-08-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-e8e870bc79fd4afdb4bc81d74fa05c1f2025-08-20T03:38:55ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-08-0156817117810.13347/j.cnki.mkaq.20240299zMKAQ20240299Performance of composite alkali-activated slag for coal seam floor grouting materialXinwang LI0Rongyuan WU1Lichao CHENG2Yifei QI3Lei LI4Li LI5School of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaSchool of Civil Engineering, Hebei University of Engineering, Handan 056038, ChinaIn response to the high cost and environmental concerns associated with cement-based grouting materials in the coal seam floor grouting reinforcement project in Handan-Xingtai Mining Area, a solution is proposed using alkali-activated slag grouting materials with slag as the main raw material and CaO and NaOH as activators. By employing orthogonal test, two-factor analysis of variance, and establishing a 3D visualization model, the study reveals the influence of NaOH and CaO dosages on the viscosity, setting time, water release rate, and compressive strength of the alkali-activated slag grouting materials. Combining with practical engineering considerations, an optimized mixing ratio scheme is proposed. The results indicate that the optimal mixing ratio is achieved with NaOH dosage of 1.0% and CaO dosage of 2.0%. At this ratio, the viscosity of the alkali-activated slag grouting material is 19.53 s, setting time is 756 min, bleeding rate is 11.00%, and compressive strengths at 3 d, 7 d, and 28 d are 3.01 MPa, 4.14 MPa, and 7.00 MPa, respectively. The alkali-activated slag grouting material at the optimal ratio meets both the performance and economic requirements of the project.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240299alkali-activated slaggrouting materialfloor groutingorthogonal test3d visual modeltwo-factor variance analysis |
| spellingShingle | Xinwang LI Rongyuan WU Lichao CHENG Yifei QI Lei LI Li LI Performance of composite alkali-activated slag for coal seam floor grouting material Meikuang Anquan alkali-activated slag grouting material floor grouting orthogonal test 3d visual model two-factor variance analysis |
| title | Performance of composite alkali-activated slag for coal seam floor grouting material |
| title_full | Performance of composite alkali-activated slag for coal seam floor grouting material |
| title_fullStr | Performance of composite alkali-activated slag for coal seam floor grouting material |
| title_full_unstemmed | Performance of composite alkali-activated slag for coal seam floor grouting material |
| title_short | Performance of composite alkali-activated slag for coal seam floor grouting material |
| title_sort | performance of composite alkali activated slag for coal seam floor grouting material |
| topic | alkali-activated slag grouting material floor grouting orthogonal test 3d visual model two-factor variance analysis |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240299 |
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