Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment

doi:10.3390/polym11010047

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Developing a Polypropylene Fabric, Silica Fume, and Redispersible Emulsion Powder Cementitious Composite for Dynamic Water Environment
	Liu, Jinquan ; Li, Xiaofei ; Saffari, Pooya ; Liang, Qichao ; Li, Ling ; Chen, Weizhong
刊名	POLYMERS
	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
内容类型	期刊论文
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
作者单位	1.East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330029, Jiangxi, Peoples R China; 2.Chinese Acad Sci, Haixi Inst, Quanzhou Inst Equipment Mfg, Quanzhou 362000, Peoples R China; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China; 4.CCCC Railway Consultants Grp Co Ltd, Beijing 100088, 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):-.