[Huang, Pingping] Hunan Prov Engn Technol Res Ctr Uranium Tailings, Hengyang 421001, Hunan, Peoples R China.
[Hu, Zhitao] Univ South China, Coll Mech Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Pingping Huang] S
School of Resource Environment and Safety Engineering, University of South China, Hengyang, China<&wdkj&>Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment, Hengyang, China
Project Approved by the Provincial Education Department of Hunan Province, China [19A420]; Natural science foundation of Hunan Province [2020JJ5463, 2021JJ40463]
机构署名：
本校为第一机构
院系归属：
机械工程学院
摘要：
To decrease the contaminant leaching and radon exhalation from uranium tailings, a phosphoric acid-based geopolymer (PAG) precursor was selected as a solidifying agent to bind coarse sands to achieve compact structures. Machine learning was applied to explore the optimal ratio of geopolymer preparation, aimed at achieving a higher compressive strength of solidified bodies. Results showed that the maximum compressive strength of 18.964 MPa appeared at the mass ratio of 2.8 for phosphoric acid/kaolin. The uranium leaching rate of 0.70 × 10−6 cm...
