Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment
文献类型：期刊论文
| 作者 | Liu, Jinquan; Li, Xiaofei; Saffari, Pooya; Liang, Qichao; Li, Ling; Chen, Weizhong |
| 刊名 | POLYMERS
 |
| 出版日期 | 2019 |
| 卷号 | 11期号:1页码:- |
| 关键词 | groundwater control dynamic-water environment polypropylene fiber silica fume redispersible emulsion powder composite slurry |
| DOI | 10.3390/polym11010047 |
| 英文摘要 | In the dynamic water environment, grouting requires a material with higher strength and anti-washout performance to prevent groundwater inrush. This study aims to develop a dynamic water slurry by mixing polypropylene fiber (PP fiber), silica fume (SF) and the polymer material of redispersible emulsion powder (REP) to the Portland cement. Towards this aim, a series of tests, including strength, gel time, bleeding rate, fluidity, and anti-washout, were conducted to evaluate the effects of SF, PP fiber, and REP on the slurry properties. The test results show that: (1) SF displays significant effects on strength, gel time, fluidity, and bleeding rate of cement slurry. Differently, PP fiber mainly affects the stress-strain behavior of the slurry and can improve the ductility significantly. (2) By mixing SF and fiber simultaneously, the slurry strength can increase by about 30%, and its strain can extend by more than 70%. Meanwhile, the composite slurry possesses great anti-washout properties at a low flow velocity (v <= 0.4 m/s), and the grouting retention rate (GRR) can reach up to 98.7%. However, the GRR decreases to a maximum value of 31.3% when v = 0.6 m/s. (3) By mixing the REP into the fiber-SF composite slurry, the GRR can further increase, reaching more than 60% even when v = 0.6 m/s. As a result, the developed fiber-SF cementitious composite slurry, which when mixed with REP, presents a favorable performance in the dynamic water environment. |
| WOS研究方向 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000457202000047 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15092]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.CCCC Railway Consultants Grp Co Ltd, Beijing 100088, Peoples R China 2.East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330029, Jiangxi, Peoples R China; 3.Chinese Acad Sci, Haixi Inst, Quanzhou Inst Equipment Mfg, Quanzhou 362000, Peoples R China; 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Jinquan,Li, Xiaofei,Saffari, Pooya,et al. Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment[J]. POLYMERS,2019,11(1):-. |
| APA | Liu, Jinquan,Li, Xiaofei,Saffari, Pooya,Liang, Qichao,Li, Ling,&Chen, Weizhong.(2019).Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment.POLYMERS,11(1),-. |
| MLA | Liu, Jinquan,et al."Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment".POLYMERS 11.1(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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