{"title":"An investigation of aggregate breakup of structured soft clay under one-dimensional compression based on FESEM images","authors":"Chao Ye, Qian Cheng, Hong Sun, Fujun Niu, Yue Li","doi":"10.1007/s10064-024-04075-0","DOIUrl":null,"url":null,"abstract":"<div><p>The aggregate breakup of structured soft clay has an important influence on the properties of the soil. In this paper, the aggregate breakup of structured soft clay under one-dimensional compression is investigated based on FESEM images, and the relative breakage <i>Br</i> is used to assess the degree of aggregate breakup, and the results show that: The structured soft clay consists of dispersed clay particles, clay aggregates and pores. When the soil is loaded, not only pores change but also clay aggregates breakup occurs. The compression process is divided into three stages: initial structured breakup stage, aggregate breakup stage, and compression stabilization stage. The degree of aggregate breakup is increasing with the increase in vertical load, the greater the degree of breakup, the greater the fractal dimension, and the maximum <i>Br</i> is 0.33. The void ratio decreases nearly linearly with the increase of <i>Br</i>, and the compressive modulus changes exponentially when the <i>Br</i> exceeds 0.20. The empirical formulae established can be utilized to predict the void ratio and compression modulus, and provide a reference for studying the aggregate breakup of structured soft clay.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Engineering Geology and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10064-024-04075-0","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
The aggregate breakup of structured soft clay has an important influence on the properties of the soil. In this paper, the aggregate breakup of structured soft clay under one-dimensional compression is investigated based on FESEM images, and the relative breakage Br is used to assess the degree of aggregate breakup, and the results show that: The structured soft clay consists of dispersed clay particles, clay aggregates and pores. When the soil is loaded, not only pores change but also clay aggregates breakup occurs. The compression process is divided into three stages: initial structured breakup stage, aggregate breakup stage, and compression stabilization stage. The degree of aggregate breakup is increasing with the increase in vertical load, the greater the degree of breakup, the greater the fractal dimension, and the maximum Br is 0.33. The void ratio decreases nearly linearly with the increase of Br, and the compressive modulus changes exponentially when the Br exceeds 0.20. The empirical formulae established can be utilized to predict the void ratio and compression modulus, and provide a reference for studying the aggregate breakup of structured soft clay.
期刊介绍：
Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces:
• the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations;
• the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change;
• the assessment of the mechanical and hydrological behaviour of soil and rock masses;
• the prediction of changes to the above properties with time;
• the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.
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