Investigation the engineering properties and environmental impact of electrolytic manganese residue-based grouting materials for karst application
文献类型：期刊论文
| 作者 | Xu, Conggan2,3; Lei, Xuewen2; Han, Lijun3; Lang, Lei3; Chen, Zisong1; Fu, Saiou3,4; Ding, Qianshen3,4; Liu, Xuehao5; Wang, Ping3; Li, Jiangshan3 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2024-12-27 |
| 卷号 | 457页码:14 |
| 关键词 | Grouting materials Karst Leakage Permeability Electrolytic manganese residue |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2024.139344 |
| 英文摘要 | The leakage channels, like karst caves and pipelines, prevalent in karst landscape regions promote the migration of pollutants from the landfill containing electrolytic manganese residue (EMR) to the surrounding environment, which poses a significant threat to the adjacent environmental safety. Grouting technology is a crucial approach for sealing leakage channels in landfill sites, preventing pollution caused by stockpiled EMR. This work aims to develop an electrolytic manganese residue composite grouting material (ECG), composed of EMR, sulphoaluminate cement, coal fly ash, ground granulated blast furnace slag, and bentonite, that is suitable for sealing leakages and preventing pollution in landfill sites located in karst regions. The effects of the water-cement (w/c) ratio of 0.8-1.1 and the EMR dosage of 10 %-50 % on the flowability, setting time, strength, permeability and leachability of ECG were systematically investigated. The results indicated that the addition of EMR increased the setting time and enlarged the time interval between initial and final setting, exhibiting the better workability. The unconfined compressive strength of ECG could surpass 7.0 MPa in 28 days, and the hydraulic conductivity were lower than 1x10-7 cm/s, which favored the landfill leakage remediation and pollution control. The primary hydration products of ECG include ettringite (AFt), aluminum hydroxide (AH3) gel, calcium silicate hydrate (C-S-H), and calcium alumino-silicate hydrate (C-A-S-H), contributing to the formation of network compact structure. Mn2+ present in EMR can be stabilized within ECG in the form of Jouravskite (Ca3Mn(SO4)(CO3) OH6 center dot 12 H2O). The leaching concentration of toxic elements from ECG was lower than threshold values of Chinese standard GB 3838-2002. This innovative grouting material exhibits excellent workability and high performance, rendering it an optimal choice for leakage containment applications in karstic landfill environments. |
| 资助项目 | National Key Research and Development Program of China[2022YFC3901205] ; Key Research and Development Program of Hubei[2023BCB074] ; Natural Science Foundation of China[42107185] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001371960100001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43379]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Sichuan Coll Appl Sci, Xichang 615000, Peoples R China 2.Wuhan Univ Sci & Technol, Sch Urban Construct, Wuhan 430065, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Liaoning Tech Univ, Coll Civil Engn, Fuxin 123000, Peoples R China 5.China Geol Survey, Wuhan Ctr, Geosci Innovat Ctr Cent South China, Wuhan 430205, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Conggan,Lei, Xuewen,Han, Lijun,et al. Investigation the engineering properties and environmental impact of electrolytic manganese residue-based grouting materials for karst application[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,457:14. |
| APA | Xu, Conggan.,Lei, Xuewen.,Han, Lijun.,Lang, Lei.,Chen, Zisong.,...&Li, Jiangshan.(2024).Investigation the engineering properties and environmental impact of electrolytic manganese residue-based grouting materials for karst application.CONSTRUCTION AND BUILDING MATERIALS,457,14. |
| MLA | Xu, Conggan,et al."Investigation the engineering properties and environmental impact of electrolytic manganese residue-based grouting materials for karst application".CONSTRUCTION AND BUILDING MATERIALS 457(2024):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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