Preparation and properties of geopolymer containing phosphoric acid-activated fly ash and mechanically-milled kaolinite: Experiments and density function theory
文献类型：期刊论文
| 作者 | Li, Jiang-shan1,3; Zhang, Wei1,3,4; Lang, Lei1,3; Dong, Chen-xi2; Huang, Kang3,4 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2024-02-15 |
| 卷号 | 441页码:16 |
| 关键词 | Phosphoric acid -based geopolymer Fly ash Mechanically activated kaolinite Density function theory Microstructure |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2024.140992 |
| 英文摘要 | The environmental pollution resulted from the stacking of solid wastes, and the 250 kg CO2 emission caused by calcined a ton of kaolinite have become an urgent problem to be solved. In this study, a novel phosphoric acidactivated geopolymer was developed, which was composed of fly ash (FA), mechanically activated-kaolinite (MAK). The influences of phosphoric acid concentration, mechanical grinding duration, and curing temperature were investigated. Microstructural properties of FAMAK geopolymers were examined through a serious of tests. Furthermore, the Gibbs free energy and nano -scale structure characteristics of acid -activated hydration products were calculated for the first time by using density functional theory. The results show that the optimal mass ratio of FA to MAK is 7:3 with 8 mol/L phosphoric acid, which led to the maximum compressive strength of 36.6 MPa at 56 -day. Besides, the optimal grinding time is 3 h and temperature is 40 degrees C. Moreover, the content of silicon promotes the polymerization reaction. The valence and bonding of aluminum are primarily affected by its coordination number. The key outcomes in this study provides a low -carbon cementitious materials, which can achieve the double benefits of carbon reduction and the utilization of solid wastes. |
| 资助项目 | International Partnership Program of Chinese Academy of Sciences[115242KYSB20200002] ; Science and Technology Major Project of Inner Mongolia[22YFHH0075] ; China Postdoctoral Science Foundation, China[2022M723347] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001181404000001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40805]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Wei |
| 作者单位 | 1.Chinese Acad Sci, HK PolyU Joint Lab Solid Waste Sci, IRSM, Wuhan 430071, Peoples R China 2.Xian Univ Sci & Technol, Collage Geol & Environm, Xian 710054, Peoples R China 3.Inst Rock & Soil Mech, Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jiang-shan,Zhang, Wei,Lang, Lei,et al. Preparation and properties of geopolymer containing phosphoric acid-activated fly ash and mechanically-milled kaolinite: Experiments and density function theory[J]. JOURNAL OF CLEANER PRODUCTION,2024,441:16. |
| APA | Li, Jiang-shan,Zhang, Wei,Lang, Lei,Dong, Chen-xi,&Huang, Kang.(2024).Preparation and properties of geopolymer containing phosphoric acid-activated fly ash and mechanically-milled kaolinite: Experiments and density function theory.JOURNAL OF CLEANER PRODUCTION,441,16. |
| MLA | Li, Jiang-shan,et al."Preparation and properties of geopolymer containing phosphoric acid-activated fly ash and mechanically-milled kaolinite: Experiments and density function theory".JOURNAL OF CLEANER PRODUCTION 441(2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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