含纤维的城市生活垃圾细粒液化潜力分析:能量法及相关模型研究

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Parul Rawat, Supriya Mohanty
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引用次数: 0

摘要

本研究包括城市固体废物(MSW)细粒和纤维增强城市固体废物细粒的再利用,其中纤维也是废物的一部分。利用能量法对所考虑的废弃物的液化敏感性进行了研究。考虑相对压实度(Rc)、频率(f)、有效围压(σ’c)、剪切应变(γ)和纤维含量(FC) 5个参数,对MSW细粒进行了57次循环三轴试验。所得数据通过建立的相关性进一步用于简化模型。发现城市生活垃圾细粒液化时的累积耗散能明显高于砂和类似类型的废物。所考虑的纤维对城市生活垃圾细粒的抗液化性能没有改善。建立了能量与超孔隙水压力比、能量与剪切模量比之间的相关关系,有助于预测垃圾在动加载条件下的行为。回归模型对多余PWP和能量比的预测R2 >; 0.9,对剪切模量和能量比的预测R2≈0.99,对耗散能量的预测R2 >; 0.7,并引入了新的FC/γ比来预测增强的MSW细粒。通过回归模型建立的不同参数与耗散能之间的关系可以应用于其他性质相似的废弃物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Analyzing liquefaction potential of municipal solid waste fines with fibers: a study on energy method and correlation models

Analyzing liquefaction potential of municipal solid waste fines with fibers: a study on energy method and correlation models

This study includes the reusability of the municipal solid waste (MSW) fines and fiber-reinforced MSW fines, where fibers are also the part of the waste. The investigation focuses on the liquefaction susceptibility of the considered waste using energy method. A total of 57 cyclic triaxial tests were conducted on MSW fines considering 5 parameters, i.e., relative compaction (Rc), frequency (f), effective confining pressure (σ′c), shear strain (γ), and fiber content (FC). The obtained data were further used for simplified models through the developed correlations. The cumulative dissipated energy at liquefaction of MSW fines was found to be significantly higher than that of sands and similar types of waste. The fibers under consideration show no improvement in the liquefaction resistance of the MSW fines. The developed correlations between the energy and the excess pore water pressure ratio, and energy and shear modulus ratio aid in predicting the behavior of waste under dynamic loading conditions. Regression models achieve R2 > 0.9 for excess PWP and energy ratios, R2 ≈ 0.99 for shear modulus and energy ratio, and R2 > 0.7 for dissipated energy prediction, with a new FC/γ ratio introduced for reinforced MSW fines. The relationship developed by regression models between different parameters and dissipated energy can be applied to other types of waste with similar nature.

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来源期刊
CiteScore
5.30
自引率
16.10%
发文量
205
审稿时长
4.8 months
期刊介绍: The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles. The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management. The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).
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