Comparative experiments on compressive deformation properties of transparent soil and standard sand
KONG Gang-qiang1, SUN Xue-jin1, XIAO Yang2, ZHAO Hong-hua3
1. Key Laboratory of Geomechanics and Embankment Engineering (Hohai University), Ministry of Education, Nanjing 210098, China; 2. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China; 3. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
Abstract：Visualization model tests on internal soil deformation and flow problems by using transparent soil to replace natural soil are gradually recognized and applied. However, the researches focusing on compressive deformation properties of transparent soil manufactured by different methods are relatively little. Based on the two granular materials of fused quartz and silica gel, one-dimensional compression tests on transparent soil manufactured with different pore fluids, particle size distributions and relative densities are carried out. The test results on Fujian standard sand and Toyoura sand are comparatively analyzed and discussed. At the same time, the internal displacement fields of typical transparent soil under the effect of loading plate are comparatively analyzed. The results show that the compressibility of transparent soil manufactured with sucrose solution pore fluid is relatively closer to that of natural sand than those manufactured with mixed oil and calcium bromide solution pore fluid. The baked quartz is more capable of modeling natural sand than the amorphous silica gel. The compressibility of transparent soil is larger than that of Fujian standard sand, especially the transparent soil manufactured with particle size of 0.5~1.0 mm, which more attention should be paid to.
孔纲强，孙学谨，肖扬，赵红华. 透明土与标准砂压缩变形特性对比试验研究[J]. 岩土工程学报, 2016, 38(10): 1895-1903.
KONG Gang-qiang, SUN Xue-jin, XIAO Yang, ZHAO Hong-hua. Comparative experiments on compressive deformation properties of transparent soil and standard sand. Chinese J. Geot. Eng., 2016, 38(10): 1895-1903.
[1] HIRD C C, NI Q, GUYMER I. Physical modeling of deformations around piling augers in clay[J]. Géotechnique, 2011, 61(11): 993-999. [2] 曹兆虎, 孔纲强, 刘汉龙, 等. 基于透明土的管桩贯入特性模型试验研究[J]. 岩土工程学报, 2014, 36(8): 1564-1568. (CAO Zhao-hu, KONG Gang-qiang, LIU Han-long, et al. Model tests on pipe pile penetration by using transparent soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(8): 1564-1568. (in Chinese)) [3] SUN J L, LIU J Y. Visualization of tunneling-induced ground movement in transparent sand[J]. Tunnelling and Underground Space Technology, 2014, 40: 236-240. [4] EZZEIN F M, BATHURST R J. A new approach to evaluate soil-geosynthetic interaction using a novel pullout test apparatus and transparent granular soil[J]. Geotextiles and Geomembranes, 2014, 42(3): 246-255. [5] ZHAO H, GE L, LUNA R. Low viscosity pore fluid to manufacture transparent soil[J]. Geotechnical Testing Journal, 2010, 33(6): 1-6. [6] ISKANDER M, LAI J, OSWALD C, et al. Development of a transparent material to model the geotechnical properties of soils[J]. Geotechnical Testing Journal, 1994, 17(4): 425-433. [7] GILL D, LEHANE B M. An optical technique for investigating soil displacement patterns[J]. Geotechnical Testing Journal, 2001, 24(3): 324-329. [8] SADEK S, ISKANDER M, LIU J Y. Geotechnical properties of transparent silica[J]. Canadian Geotechnical Journal, 2002, 39(1): 111-124. [9] ISKANDER M, SADEK S, LIU J Y. Optical measurement of deformation using transparent silica to model sand[J]. International Journal of Physical Modelling in Geotechnics, 2002a, 2(4): 13-26. [10] ISKANDER M, LIU J Y, SADEK S. Transparent amorphous silica to model clay[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002b, 128(3): 262-273. [11] ZHAO H H, GE L. Investigation on the shear moduli and damping ratios of silica gel[J]. Granular Matter, 2014, 16(4): 449-456. [12] LO H, TABE K, ISKANDER M, et al. A transparent water-based polymer for simulating multiphase flow[J]. Geotechnical Testing Journal, 2010, 33(1): 1-13. [13] 吴明喜. 人工合成透明砂土及其三轴试验研究[D]. 大连: 大连理工大学, 2006. (WU Ming-xi. Study on transparent synthetic sand and its triaxial test[D]. Dalian: Dalian University of Technology, 2006. (in Chinese)) [14] EZZEIN F M, BATHURST R J. A transparent sand for geotechnical laboratory modeling[J]. Geotechnical Testing Journal, 2011, 34(6): 590-601. [15] PETERS S B, SIEMENS G, and TAKE W A. Characterization of transparent soil for unsaturated applications[J]. Geo- technical Testing Journal, 2011, 34(5): 1-12. [16] 孔纲强, 刘 璐, 刘汉龙, 等. 玻璃砂透明土与标准砂变形特性对比三轴试验研究[J]. 岩土工程学报, 2013, 35(6): 1140-1146. (KONG Gang-qiang, LIU Lu, LIU Han-long, et al. Comparative analysis on the deformation characteristics of transparent glass sand and standard sand[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(6): 1140-1146. (in Chinese)) [17] GUZMAN I L, ISKANDER M, SUESCUN-FLOREZ E, et al. A transparent Aqueous-saturated sand surrogate for use in physical modeling[J]. Acta Geotechnica, 2014, 9(2): 187-206. [18] SL 237—1999土工试验规程[S]. 1999. (SL 237—1999 Specification of soil test[S]. 1999. (in Chinese)) [19] NAKATA Y, KATO Y, HYODO M, et al. One-dimensional compression behavior of uniformly graded sand related to single particle crushing strength[J]. Soils and Foundations, 2001, 41(2): 39-51. [20] MESRI G, VARDHANABHUTI B. Compression of Granular Materials[J]. Canadian Geotechnical Journal, 2009, 46(4): 369-392. [21] 魏汝龙. 整理压缩试验资料的一种新方法[J]. 水利水运科学研究, 1980(3): 90-93. (WEI Ru-long. New method for dealing with results of odometer test[J]. Journal of Nanjing Hydraulic Research Institute, 1980(3): 90-93. (in Chinese)) [22] 曹兆虎, 孔纲强, 刘汉龙, 等. 基于透明土材料的沉桩过程土体三维变形模型试验研究[J]. 岩土工程学报, 2014, 36(2): 395-400. (CAO Zhao-hu, KONG Gang-qiang, LIU Han-long, et al. Model tests on 3-D soil deformation during pile penetration using transparent soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(2): 395-400. (in Chinese))
