Effect of surcharge loads during curing of lime stabilised Cochin marine clay

IF 1.3 Q3 ENGINEERING, GEOLOGICAL

Proceedings of the Institution of Civil Engineers-Ground Improvement Pub Date : 2023-08-23 DOI:10.1680/jgrim.22.00051

Rija Johny, B. M. Abraham, A. Sridharan

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引用次数: 0

Abstract

The marine clays possess poor engineering properties and need to be improved prior to any construction activities on them. Lime stabilization is a widely adopted method of chemical stabilization for such types of soils. This paper evaluates the effect of surcharge loads during curing of lime stabilization of Cochin marine clays. In the case of lime-stabilized soil cured under surcharge loads, it is necessary to consider two processes, i.e. cementation and consolidation, along which the structures of stabilized soils evolve. These two processes are interrelated and cannot be considered separately, especially in the early stages of curing when significant structural changes occur. This study investigated the strength and deformation characteristics of lime stabilized Cochin marine clay subjected to surcharge loading during curing. The marine clay with 6% lime was subjected to surcharge loads of 20kPa, 40kPa, and 60kPa for different curing periods up to 180 days. The effect of surcharge loading on shear strength and compressibility characteristics were evaluated at different curing periods.

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石灰稳定科钦海相粘土固化过程中附加荷载的影响

海相粘土具有较差的工程性能，在进行施工前需要对其进行改良。石灰稳定是这类土壤广泛采用的化学稳定方法。本文对科钦海相粘土石灰稳定养护过程中附加荷载的影响进行了评价。对于石灰稳定土在附加荷载作用下的固化，需要考虑两个过程，即胶结和固结，稳定土的结构沿着这两个过程演变。这两个过程是相互关联的，不能分开考虑，特别是在固化的早期阶段，当发生重大的结构变化时。研究了石灰稳定科钦海相粘土在附加荷载作用下的强度和变形特性。对含6%石灰的海相粘土分别施加20kPa、40kPa、60kPa的附加荷载，养护时间长达180天。研究了不同龄期附加荷载对混凝土抗剪强度和压缩性的影响。

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来源期刊

Proceedings of the Institution of Civil Engineers-Ground Improvement ENGINEERING, GEOLOGICAL-

CiteScore

3.10

自引率

8.30%

发文量

期刊介绍： Ground Improvement provides a fast-track vehicle for the dissemination of news in technological developments, feasibility studies and innovative engineering applications for all aspects of ground improvement, ground reinforcement and grouting. The journal publishes high-quality, practical papers relevant to engineers, specialist contractors and academics involved in the development, design, construction, monitoring and quality control aspects of ground improvement. It covers a wide range of civil and environmental engineering applications, including analytical advances, performance evaluations, pilot and model studies, instrumented case-histories and innovative applications of existing technology.