Effect of volume fraction and morphology of particles on the dynamic compressive strength of ice-silica particle mixtures

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-09-13 DOI:10.1016/j.coldregions.2025.104685

Shruti Pandey, Ishan Sharma, Venkitanarayanan Parameswaran

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引用次数: 0

Abstract

We investigate the compressive strength at high strain-rates of ice-silica particle mixtures with varying silica content. For this, we modify the split-Hopkinson pressure bar (SHPB) for low-temperature applications. Ice-silica particle mixtures with 4%, 8%, 12%, and 20% silica by volume are prepared by mixing crushed polycrystalline ice and silica particles. We have also probed the effect of particle shape by carrying out tests on ice-silica particle mixtures prepared using randomly-shaped, natural sand particles obtained from a local river basin, and spherical glass silica particles. The samples are tested at temperatures between 0 °C and −1 °C. We find that the dynamic strength of the ice-silica particle mixture initially remains unaffected at a lower volume percentage of silica and then shows an increase.

Ice-silica particle mixtures with glass beads, which exhibit greater overall regularity, exhibit lower strength enhancement compared to those prepared using the more irregular river sand particles for the same volume percentage. Based on our experimental results, we propose an empirical model that predicts the dynamic compressive strength of ice-silica particle mixtures, considering the varying volume fraction of silica particles and their morphology.

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体积分数和颗粒形态对冰-硅颗粒混合物动态抗压强度的影响

我们研究了不同硅含量的冰-硅颗粒混合物在高应变率下的抗压强度。为此，我们修改了用于低温应用的分离式霍普金森压力棒（SHPB）。通过将破碎的多晶冰和二氧化硅颗粒混合，制备了体积为4%、8%、12%和20%二氧化硅的冰-二氧化硅颗粒混合物。我们还研究了颗粒形状对冰-硅颗粒混合物的影响，这些冰-硅颗粒混合物是用从当地河流流域获得的随机形状的天然沙粒和球形玻璃二氧化硅颗粒制备的。样品在0°C和- 1°C之间的温度下进行测试。我们发现冰-二氧化硅颗粒混合物的动强度在较低的二氧化硅体积百分比下最初不受影响，然后呈增加趋势。冰-硅颗粒与玻璃微珠的混合物，整体上表现出更大的规律性，但与使用更不规则的河砂颗粒制备的相同体积百分比相比，其强度增强效果较低。基于我们的实验结果，我们提出了一个经验模型来预测冰-硅颗粒混合物的动态抗压强度，考虑了不同体积分数的硅颗粒及其形态。

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.