Rheological Characterization and Accumulation Tests for Strong Thixotropic Engineering Slurry
文献类型：期刊论文
| 作者 | Yuan, Kekuo3,4; Lu, Yating3,4; Li, Wanlu3,4; Yu, Hongdan2; Gao, Shan1 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 15期号:19页码:17 |
| 关键词 | rheological engineering slurry thixotropic characterization rheological model accumulation model |
| DOI | 10.3390/ma15196891 |
| 英文摘要 | Underground void subsidence hazards, especially mine goaf, have now become one of the major social problems affecting the well-being of civilians and development in China. The objective of this study was to propose a kind of strong thixotropic engineering slurry and filling treatment for use in underground void subsidence hazards. The optimal agent ratio for thixotropic cement slurry/mortar was obtained by indoor tests, where the rheological agent is 7.5% compared to the weight of cement, the water-solid ratio is in the range of 0.7 similar to 0.8, and the aeolian sand ratio can be 0 similar to 1.5 times that of cement. The rheological properties of slurry and mortar were tested using a Brookfield RST-SST rheometer. The results show that aeolian sand can be used as thixotropic cement mortar for a backfilling treatment for underground voids (mine goaf). The static yield stress increases non-linearly compared to existing thixotropic models. The stress decays sharply with shearing (the shear rate is more or less 10 s(-1)) and then the stress increases with the increase in shear rate (the shear rate is more than 10 s(-1)). The increase in the stress of the slurry is greater than in the mortar. A natural logarithmic function between yield stress and rest time (only 1 parameter), an exponential function with two parts for stress-shear rate (a rheology model, with only 3 parameters), and an exponential function for the accumulation law (only 2 parameters) were proposed in turn. |
| 资助项目 | Shaanxi Provincial Research Foundation for Basic Research, China[2020JM-642] ; State Key Laboratory of Geomechanics and Geotechnical Engineering[Z019021] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000867950400001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37923]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Gao, Shan |
| 作者单位 | 1.Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China 2.State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Shanxi Key Lab Safety & Durabil Concrete Struct, Xian 710123, Peoples R China 4.Xijing Univ, Coll Civil Engn, Xian 710123, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Kekuo,Lu, Yating,Li, Wanlu,et al. Rheological Characterization and Accumulation Tests for Strong Thixotropic Engineering Slurry[J]. MATERIALS,2022,15(19):17. |
| APA | Yuan, Kekuo,Lu, Yating,Li, Wanlu,Yu, Hongdan,&Gao, Shan.(2022).Rheological Characterization and Accumulation Tests for Strong Thixotropic Engineering Slurry.MATERIALS,15(19),17. |
| MLA | Yuan, Kekuo,et al."Rheological Characterization and Accumulation Tests for Strong Thixotropic Engineering Slurry".MATERIALS 15.19(2022):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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