The effects of lithium slag on microstructure and mechanical performance of metakaolin-based geopolymers designed by response surface method (RSM)
文献类型：期刊论文
| 作者 | Li, Maosen1,4,5; Liu, Huai1,5; Duan, Ping1,2,3,4,5; Ruan, Shaoqin6; Zhang, Zuhua7; Ge, Wen1,8 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
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| 出版日期 | 2021-09-13 |
| 卷号 | 299页码:17 |
| ISSN号 | 0950-0618 |
| 关键词 | Metakaolin Lithium aluminosilicate residue Geopolymer Response surface method |
| DOI | 10.1016/j.conbuildmat.2021.123950 |
| 英文摘要 | This study reports the effects of lithium aluminosilicate residue (LARS) powder, a byproduct in the process of extracting lithium from lithium pyroxene, on microstructure and mechanical performance of metakaolin (MK)-based geopolymer, and RSM was used to obtain the optimal mixing proportions. The compressive strength of all groups of samples was tested to characterize the mechanical properties of the LARS-MK geopolymer, whereas Scanning Electron Microscopy-Energy Dispersive Spectrometer (SEM-EDS) and BET were employed to characterize the microstructures and pore structure. To identify the products formed in the geopolymerization process, the phase compositions and molecular bonds were analyzed using X-ray diffraction (XRD) and Fourier infrared spectrometer (FT-IR). The results show that the introduction of LARS degrades the microstructure of geopolymer in the early ages. However, it is beneficial for the strength development after 28 days of curing when a proper amount of LARS powder was introduced, and the optimal compressive strength of the samples cured for 28 days with about 10% LARS and 105% activator is 77.5 MPa. Meanwhile, the deteriorated mechanical performance at the age of 180 days indicates that the addition of LARS powders may not favor the late age performance of samples. Furthermore, the microstructural analysis indicates that the introduction of LARS may lead to new phases such as rankinite or albite. The findings suggest that LARS has a great potential in developing geopolymers and provides a unique solution to its waste management. (c) 2021 Elsevier Ltd. All rights reserved. |
| 资助项目 | Natural Science Foundation of Hubei Province[2020CFB575] ; Natural Science Foundation of Zhejiang Province[LY19E080003] ; Opening Fund of Key Laboratory of Geological Survey and Evaluation of Ministry of Education[GLAB2020ZR09] ; Fundamen-tal Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Opening Fund of GuangXi Key Labora-tory of New Energy and Building Energy Saving[19J222] ; Key Research and Development Program of Hubei Province[2020BAB065] ; Key Research and Development Program of Jiangxi Province[20201BBG71011] ; Fundamental Research Funds for the Central Universities, CHD[300102211506] ; Opening Fund of Key Laboratory of Advanced Building Materials of Anhui Province[JZCL001KF] ; Open Research Fund of State Key Laboratory of Geomechan-ics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z020008] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000685936900003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27703]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Duan, Ping |
| 作者单位 | 1.China Univ Geosci, Minist Educ, Key Lab Geol Survey & Evaluat, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China 2.China Univ Geosci Wuhan, Zhejiang Inst, Hangzhou 311305, Peoples R China 3.Guilin Univ Technol, GuangXi Key Lab New Energy & Bldg Energy Saving, Guangxi 541004, Peoples R China 4.Changan Univ, Minist Transport, Key Lab Rd Struct & Mat, Xian 710064, Peoples R China 5.Anhui Jianzhu Univ, Key Lab Adv Bldg Mat Anhui Prov, Hefei 230022, Peoples R China 6.Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Peoples R China 7.Hunan Univ, Coll Civil Engn, Key Lab Green & Adv Civil Engn Mat & Applicat Tec, Changsha 410082, Peoples R China 8.Chinese Acad Sci, Inst Rock & Soil Mech, Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Maosen,Liu, Huai,Duan, Ping,et al. The effects of lithium slag on microstructure and mechanical performance of metakaolin-based geopolymers designed by response surface method (RSM)[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,299:17. |
| APA | Li, Maosen,Liu, Huai,Duan, Ping,Ruan, Shaoqin,Zhang, Zuhua,&Ge, Wen.(2021).The effects of lithium slag on microstructure and mechanical performance of metakaolin-based geopolymers designed by response surface method (RSM).CONSTRUCTION AND BUILDING MATERIALS,299,17. |
| MLA | Li, Maosen,et al."The effects of lithium slag on microstructure and mechanical performance of metakaolin-based geopolymers designed by response surface method (RSM)".CONSTRUCTION AND BUILDING MATERIALS 299(2021):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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