Laboratory investigation on the single particle crushing strength of carbonate gravel incorporating size and shape effects
文献类型：期刊论文
| 作者 | Liu, Xin1; Li, Sa1; Yao, Ting2 |
| 刊名 | GEOTECHNIQUE
 |
| 出版日期 | 2023-12-20 |
| 页码 | 17 |
| 关键词 | carbonate gravel granular materials laboratory tests particle crushing/crushability particle crushing strength particle shape particle size particle-scale behaviour |
| ISSN号 | 0016-8505 |
| DOI | 10.1680/jgeot.23.00038 |
| 英文摘要 | Particle strength is one of the critical factors that causes the degradation of the mechanical behaviour of crushable soil. Because of the complexity of particle shape, its effect on particle strength has not been completely understood. In this study, single particle crushing tests were performed on carbonate gravel particles with three size fractions (i.e. 5-10 mm, 10-15 mm and 15-20 mm) and three shapes (i.e. blocky, rodlike and flaky), using a PartAn3D Maxi large particle size and shape analyser to obtain the shape characteristics of the particles. The determination of crushing strength for particles with complex shapes was discussed, and it was found that it is appropriate to use the area equivalent circle diameter to obtain the crushing strength. The influence of particle size and shape parameters, including the elongation index, flatness index, intercept sphericity, circularity and convexity, on the crushing strength were identified, and an index termed the form factor considering dimensions in three directions was proposed to describe the effect of particle shape. Based on this form factor, a probabilistic model was established to predict the distribution of crushing strength of carbonate gravel particles with various sizes and shapes. The proposed model could be used in the discrete-element method to consider the influence of shape in addition when evaluating particle breakage. |
| 资助项目 | National Natural Science Foundation of China[42072294] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001127664800001 |
| 出版者 | EMERALD GROUP PUBLISHING LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40186]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Xin |
| 作者单位 | 1.Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin, Peoples R China 2.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 | Liu, Xin,Li, Sa,Yao, Ting. Laboratory investigation on the single particle crushing strength of carbonate gravel incorporating size and shape effects[J]. GEOTECHNIQUE,2023:17. |
| APA | Liu, Xin,Li, Sa,&Yao, Ting.(2023).Laboratory investigation on the single particle crushing strength of carbonate gravel incorporating size and shape effects.GEOTECHNIQUE,17. |
| MLA | Liu, Xin,et al."Laboratory investigation on the single particle crushing strength of carbonate gravel incorporating size and shape effects".GEOTECHNIQUE (2023):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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