DEM modeling of granular soils reinforced by disposable face-mask chips

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2024-10-01 DOI:10.1016/j.compgeo.2024.106804

Mengmeng Wu , Zhen-Yu Yin , Yuze Sun , Yue Li , Jianfeng Wang

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引用次数: 0

Abstract

The use of disposable masks, especially in the wake of the COVID-19 pandemic, has led to an increased focus on sustainable disposal and recycling methods. This study investigates the feasibility of integrating shredded mask materials into granular soils to enhance their mechanical properties for engineering applications. After validating the selection of Discrete Element Method (DEM) contact parameters through the conducted physical experiments, a comprehensive series of DEM simulations was performed to explore the effects of various mask contents on the mechanical behavior of sand-mask chip mixtures (e.g., soil’s strength and dilatancy) under different confining pressures. Additionally, the study analyzed the potential of mask chips in improving soil fabric, reducing contact force concentrations under shearing, and contributing to the soil’s stability. The results suggest that waste face masks could serve as a valuable resource for soil stabilization. This not only provides a viable solution for mask waste management but also introduces a novel, eco-friendly material that could improve the engineering properties of granular soils. The findings underscore the importance of understanding the interaction between waste masks and soil and open new pathways for the recycling of non-biodegradable waste in geotechnical applications.

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用一次性面罩芯片加固颗粒土的 DEM 建模

一次性口罩的使用，尤其是在 COVID-19 大流行之后，使人们越来越关注可持续处置和回收方法。本研究探讨了将切碎的口罩材料整合到粒状土壤中的可行性，以增强其在工程应用中的机械性能。在通过物理实验验证了离散元素法（DEM）接触参数的选择后，进行了一系列全面的 DEM 模拟，以探索在不同约束压力下，各种掩模含量对砂土-掩模碎屑混合物力学行为（如土壤强度和膨胀性）的影响。此外，研究还分析了掩膜片在改善土壤结构、减少剪切作用下的接触力集中以及促进土壤稳定性方面的潜力。研究结果表明，废弃口罩可作为土壤稳定的宝贵资源。这不仅为口罩废物管理提供了一个可行的解决方案，还引入了一种新型环保材料，可改善颗粒土的工程特性。这些发现强调了了解废弃面膜与土壤之间相互作用的重要性，并为在岩土工程应用中回收不可降解的废弃物开辟了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.