Journal of Glaciology and Geocryology

Experimental study on morphometric changes of sand particles under freezing-thawing cycles

Qingfei YUN, Ze ZHANG, Jiao MING, Xiangyu FU, Chenglin ZHOU, Andrey MELNIKOV

Journal of Glaciology and Geocryology, 2020, 42(1): 205-215. DOI: 10.7522/j.issn.1000-0240.2020.0028

砂	D₁₀/μm	D₅₀/μm	D₉₀/μm	平均圆度	长径比平均值	体积平均粒径/μm	颗数平均粒径/μm
细砂	95.38	211.6	346.79	0.811	1.44	219.34	33.89
粗砂	105.79	200.12	406.70	0.726	1.56	215.33	40.01

Table 2 The initial form parameters of the fine sand and coarse sand

Other figure/table from this article

Fig.1 The test plan flow chart
Table 1 Volume distributions of the fine sand and coarse sand
Fig.2 Photo showing the freezing-thawing cycle testing chamber
Fig.3 The schematic diagram of freezing-thawing cycles test device
Fig.4 PIP 9.1 particle image processor
Fig.5 Definition of particle aspect ratio
Fig.6 Definition of particle roundness
Fig.7 The variable psephicity of fine sand changing with freezing-thawing cycles
Fig.8 The variable psephicity of coarse sand changing with freezing-thawing cycles
Fig.9 Typical grain pattern of coarse sand under quadruple objective
Fig.10 Typical grain patterns of coarse sand under quadruple objective after 2 （a）， 4 （b）， 6 （c）， 8 （d）， 10 （e）， 50 （f） and 100 （g） freezing-thawing cycles
Fig.11 Typical grain morphology of fine sand
Fig.12 Typical grain pattern of coarse sand
Fig.13 The variable aspect ratio of fine sand with freezing-thawing cycles
Fig.14 The variable aspect ratio of Coarse sand with freezing-thawing cycles
Fig.15 Logical graphical model of sand particle extrusion
Fig.16 Logical graphical model of sand particle friction