Characterization of the Rate-Dependent Behavior of a High-Plasticity Stiff Sedimentary Clay

IF 1.3 4区 工程技术 Q3 ENGINEERING, GEOLOGICAL Geotechnical Testing Journal Pub Date : 2023-09-15 DOI:10.1520/gtj20230339
Kenny K. Sorensen, Victor K. H. Nielsen, Astrid R. Mikkelsen, Hans H. Stutz
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引用次数: 1

Abstract

This study investigates the influence of structure and stress history on the strain-rate-dependent (viscous) stress–strain behavior of a very-high-plasticity stiff sedimentary clay. Oedometer, ring shear, and triaxial compression tests with step changes in strain rate have been conducted on specimens of Søvind Marl with the aim to characterize and quantify the rate-dependent behavior of the clay in both compression and shearing pre-peak, post-peak, and at residual state. Moreover, from a comparison of intact specimens and normally consolidated and overconsolidated reconstituted specimens, the influence of diagenesis and mechanical overconsolidation on the rate-dependent behavior is assessed and discussed in the light of findings from similar studies on other high-plasticity clays.
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一种高塑性硬质沉积粘土速率依赖特性的表征
本研究探讨了结构和应力历史对一种非常高塑性硬质沉积粘土的应变率依赖(粘性)应力-应变行为的影响。采用应变速率阶跃变化的Oedometer、环剪和三轴压缩试验对s ~ vind灰岩试样进行了试验,目的是表征和量化粘土在峰前、峰后和残余状态下的压缩和剪切速率依赖行为。此外,通过对完整样品与正常固结和超固结重建样品的比较,结合其他高塑性粘土的类似研究结果,评估和讨论了成岩作用和力学超固结对速率依赖行为的影响。
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来源期刊
Geotechnical Testing Journal
Geotechnical Testing Journal 工程技术-地球科学综合
CiteScore
3.10
自引率
12.50%
发文量
53
审稿时长
3.6 months
期刊介绍: The purpose of the Geotechnical Testing Journal is (1) to provide a high-quality publication that informs the profession of new developments in soil and rock testing and related fields; (2) to provide a forum for the exchange of information, particularly that which leads to the development of new test procedures; and (3) to stimulate active participation of the profession in the work of ASTM International Committee D18 on Soil and Rock and related information. The editorial scope of this journal covers test methods for soil and rock, sampling, nomenclature, and practices relating to the determination of properties and behavior of soil and rock for engineering purposes, and for soil as a medium for plant growth.
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