Basalt fiber reinforcement mechanism for geopolymer exposed to lunar temperature environment
文献类型：期刊论文
| 作者 | Li, Yuxin1,2; Pan, Pengzhi1,2; Miao, Shuting3; Feng, Yujie1,2 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2024-11-15 |
| 卷号 | 451页码:16 |
| 关键词 | Lunar regolith simulant Geopolymer Basalt fiber Curing condition AE |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2024.138845 |
| 英文摘要 | The construction of a lunar base is deemed a significant move for mankind's exploration into deep space. Geopolymer solidification is considered as an effective technique for regolith to achieve promising mechanical properties, while extreme temperature on the lunar surface could negatively affect the mechanical properties of geopolymer samples. In this study, a new lunar regolith simulant and basalt fiber were used to develop geopolymer samples with various fiber dosages of 0 %, 0.3 %, 0.7 %. These samples were cured at temperature approaching actual lunar surface temperatures at recommended locations (-196 degrees C-118 degrees C) for 3d, 7d, 14d, and 28d. A range of tests were conducted on geopolymer samples to study the effects of fiber dosage and curing condition, including P-wave, compressive strength, flexural strength, AE, SEM-EDS, FTIR, and XRD. The addition of 0.3 % fiber into the samples results in an increase of tensile cracking, while the addition of 0.7 % fiber induces an increase in shear cracking within the samples. These findings, corroborated by SEM observations, substantiate the mechanism of fiber clustering and bridging. High-temperature curing is beneficial for the geopolymerization, it also results in zeolite products and higher growth rate of N-A-S-H gel while low-temperature causes some degradation. High rates of temperature change can cause thermal stress cracks, which also degrade the geopolymer. With an increase in curing time, the geopolymer samples exhibit a higher quantity of N-A-S-H gel and higher cross-linked C-N-A-S-H gel. |
| 资助项目 | National Natural Science Foundation of China[52125903] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001346117800001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42939]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pan, Pengzhi |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany |
| 推荐引用方式 GB/T 7714 | Li, Yuxin,Pan, Pengzhi,Miao, Shuting,et al. Basalt fiber reinforcement mechanism for geopolymer exposed to lunar temperature environment[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,451:16. |
| APA | Li, Yuxin,Pan, Pengzhi,Miao, Shuting,&Feng, Yujie.(2024).Basalt fiber reinforcement mechanism for geopolymer exposed to lunar temperature environment.CONSTRUCTION AND BUILDING MATERIALS,451,16. |
| MLA | Li, Yuxin,et al."Basalt fiber reinforcement mechanism for geopolymer exposed to lunar temperature environment".CONSTRUCTION AND BUILDING MATERIALS 451(2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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