Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling

doi:10.3389/fmats.2021.740388

	Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling
	Leng, Xianlun 2,3; Wang, Chuan 2,3; Pang, Rong 1; Sheng, Qian 2,3; Chen, Jian 2,3
刊名	FRONTIERS IN MATERIALS
	2021-11-25
卷号	8 页码:18
关键词	transparent cemented soil hydrophobic fumed silica powder fused quartz preparation method triaxial shear test strength characteristics
ISSN号	2296-8016
DOI	10.3389/fmats.2021.740388
英文摘要	The preparation of transparent materials suitable for simulating different rock and soil masses is the foundation for image-based physical modeling tests in studying deformation and failure mechanisms in geotechnical media. A transparent cemented soil (TCS) with similar geotechnical properties of natural soil and soft rock was prepared using fused quartz as the skeleton, hydrophobic fumed silica powder as the cement and mixed mineral oil of 15# white oil and n-dodecane as the pore fluid. Eleven groups of TCS samples with different shear strengths were synthesized by adjusting the content or mass ratio of the cement and particle size or gradation of the skeleton. Contrasting tests of unconsolidated-undrained triaxial compression were carried out and the mechanical characteristics of TCS were analyzed, showing that the stress-strain relationship, shear strength and failure mode of TCS are similar to those of natural soil. The mechanical parameters of TCS undergo complex variation with the factors, and the mesoscopic mechanism of the changes therein was revealed with the help of optical microscope photos. The similarity ratio of TCS to soft rock was derived according to geometries and stress conditions of laboratory model tests, demonstrating the feasibility of using TCS as similar materials to soft rock. Moreover, empirical formulas for the change of shear strength parameters with the factors were fitted to facilitate the preparation of TCS with target shear strength in the future. The findings can provide a basis for preparing transparent similar materials to natural soil and soft rock in physical modeling tests.
资助项目	National Natural Science Foundation of China[52079135] ; International Partnership Program of the International Cooperation Bureau of Chinese Academy of Sciences[131551KYSB20180042] ; National Key Research and Development Program[2017YFF0108705]
WOS研究方向	Materials Science
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000728958000001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/30919]
专题	中科院武汉岩土力学所
通讯作者	Leng, Xianlun
作者单位	1.Hubei Univ Technol, Coll Civil Engn & Environm, Wuhan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Leng, Xianlun,Wang, Chuan,Pang, Rong,et al. Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling[J]. FRONTIERS IN MATERIALS,2021,8:18.
APA	Leng, Xianlun,Wang, Chuan,Pang, Rong,Sheng, Qian,&Chen, Jian.(2021).Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling.FRONTIERS IN MATERIALS,8,18.
MLA	Leng, Xianlun,et al."Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling".FRONTIERS IN MATERIALS 8(2021):18.