Field and laboratory resistance assessment for deep mixing of clay-cement and clay-lime

Document Type : Research Article

Authors

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

2 Civil engineering faculty, razi university

3 Kermanshah University of Technology

Abstract

Evaluation of the strength of deep mixing columns as a soil improvement method is the main subject of this study. In this research, cylindrical laboratory samples with a length of 20cm and a diameter of 10cm have been constructed. The result of mixing soil-cement and soil-lime was taken into account that cured in the temperature and humidity of both laboratory environments and field conditions and then subjected to unconfined uniaxial loading tests. Different weight mixtures of soil-adhesive materials with a minimum of 6% and a maximum of 14% by weight of adhesive materials have been used for this purpose. Also, in this study, the deep mixing of the soil in real and field scale has been implemented in a layer of thin clayey soil, CL, with low plasticity properties of CL-type clay. Mixing of deep field soil has been carried out by the designed digging-mixing machine. In addition to laboratory cylindrical samples, cylindrical samples were taken from bulk mixing columns in two linear (single) and clock-type (group) arrangements and were subjected to uniaxial loading in the laboratory until the moment of failure. The general result of this study is the proposal of conversion coefficients of strength of laboratory samples to field samples and vice versa, in the same conditions of construction geometry and the type of selected materials and different environmental conditions of samples curing.

Keywords

Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 56, Issue 10
2025
Pages 1219-1246

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