Time-dependent settlement behaviour of clayey soil treated with deep cement mixed column

Abstract

In soft and clayey soils, application of deep cement mixing (DCM) columns as an effective ground improvement technique is gaining popularity in comparison to other conventional methods for several reasons such as simple methodology, cost effectiveness, rapid construction and high stiffness end products. However, past studies pertaining to DCM improved composite soil reported limited information about the time-dependent consolidation settlement behaviour. To develop a better understanding of the time-dependent settlement behaviour of the DCM improved composite soil, an experimental setup is developed in this study. From the results, it is found that the creep parameters determined during the primary and secondary stage of consolidation decrease with increase of the loading period. Further observations and results of the distribution behaviour of creep parameters before and post failure of DCM column are presented and comprehensively discussed in this study. © 2023 selection and editorial matter, Askar Zhussupbekov, Assel Sarsembayeva & Victor N. Kaliakin

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