Studying of the Results of Deep Mixing of Lean Clay Using Laboratory and Field Methods

Document Type : Original Article

Authors

1 Department of Civil Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran

2 Associated professor Department of Civil Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran

3 Assistant Professor of Kermanshah University of Technology

Abstract

In this research, laboratory and field modeling have evaluated the effect of deep mixing on the compressive strength of lean clay. Low plasticity or lean clay has low ductility and strength. Mixing it with cement and lime slurry stabilizer has been considered in this article. Cylindrical soil mixing specimens are loaded uni-axially until the moment of failure with the help of loading jack and installation of load cell and strain gauge. Weight ratios of 6, 8, 10, 12 and 14% of binder in cylindrical laboratory samples have been studied. In addition, voluminous and deep field mixing models have also been tested for on-site plate loading. A deep soil-mixing machine designed during the present study performed high volume deep field mixing. The results of this field study provide excellent real-time output graphs for researchers in the field. Based on the various findings presented in this study, the validation of deep mixing processes simulated by alternative numerical and analytical methods can be checked. In this study, the subject of deep mixing in three areas of element laboratory modeling, large-scale field operations and micro-scale evaluation of laboratory samples has been investigated. Based on the results of this paper, it is difficult to obtain a uniform mixing scheme at the field scale. According to the findings of this study, both cement and lime play a significant role in the bonding of clay particles. The difference is that in calcium hydroxide calcareous samples, Ca(OH)2 plays an essential role in the formation of intercellular clay bonds.

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Asas Journal
Volume 24, Issue 67
Summer 2022
September 2022

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History

  • Receive Date: 11 July 2022
  • Revise Date: 04 October 2022
  • Accept Date: 15 April 2023

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