Grouting Additives and Information-Based Construction of Jet Grouting in the Water-Rich Sand Stratum

doi:10.3390/app122412586

	Grouting Additives and Information-Based Construction of Jet Grouting in the Water-Rich Sand Stratum
	Qian, Xiaqing 1,2; Zhang, Peng 1; Wang, Shengnian 1; Guo, Shuangfeng 1; Hou, Xinyu 2
	2022-12
发表期刊	APPLIED SCIENCES-BASEL
卷号	12 期号:24
摘要	The dynamic action of groundwater in the water-rich sand stratum carries away injected cement slurry before it becomes solidified, which seriously affects the determination of the diameter and strength of the column. Grouting additives and information-based construction are two main actions to control the quality of jet grouting construction. This study introduced a solution of grouting additives and information-based construction of jet grouting in the water-rich sand stratum. First, high-polymer cement grout (HPCG), red mud and phosphogypsum cement grout (RPCG) and metakaolin cement grout (MKCG) additives were screened with a series of laboratory tests on solidification time and permeability; moreover, the mix proportion of grouting fluids was developed in order to adapt for water-rich sand strata. Secondly, information-based construction of jet grouting was conducted to control grouting quantity with real-time monitoring of drill rotational velocity, drill lifting speed and injection pressure equipped with the monitoring system on the double fluid jet grouting systems. Lastly, the validity of grouting additives and information-based construction in the water-rich sand stratum was verified via a test pile in situ, and a series of material tests on drilling core samples on permeability with SEM observation. The results indicate that the high polymer is the preferred additive of grouting fluids because the solidification time can be controlled in the range of 10 min to 20 min; the permeability of drilling core samples can reach the order of 10(-7), with the mix proportion being A:B = 2:1, high-polymer additive:water > 1:3, with a water-cement ratio of 0.8. The specifications of information-based construction are a drill rotational velocity of 10 r/min, a drill lifting speed of 0.2 m/min, an injection pressure of 20 MPa and a grouting quantity of 40 L/min.
关键词	jet grouting DESIGN grouting additives FLOW information-based construction water-rich sand stratum permeability
DOI	10.3390/app122412586
收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000902162400001
出版者	MDPI
原始文献类型	Article
EISSN	2076-3417
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/168575
专题	国家开放大学江苏分部
通讯作者	Guo, Shuangfeng
作者单位	1.Nanjing Tech Univ, Coll Transportat Engn, Nanjing 210009, Peoples R China; 2.Jiangsu Open Univ, Coll Civil Engn, Nanjing 210036, Peoples R China
第一作者单位	国家开放大学江苏分部
推荐引用方式 GB/T 7714	Qian, Xiaqing,Zhang, Peng,Wang, Shengnian,et al. Grouting Additives and Information-Based Construction of Jet Grouting in the Water-Rich Sand Stratum[J]. APPLIED SCIENCES-BASEL,2022,12(24).
APA	Qian, Xiaqing,Zhang, Peng,Wang, Shengnian,Guo, Shuangfeng,&Hou, Xinyu.(2022).Grouting Additives and Information-Based Construction of Jet Grouting in the Water-Rich Sand Stratum.APPLIED SCIENCES-BASEL,12(24).
MLA	Qian, Xiaqing,et al."Grouting Additives and Information-Based Construction of Jet Grouting in the Water-Rich Sand Stratum".APPLIED SCIENCES-BASEL 12.24(2022).