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 20 cm and a diameter of 10 cm, the result of mixing soil-cement and soil-lime processed in the temperature and humidity of both laboratory environments and field conditions, were subjected to unconfined uniaxial loading tests. have taken. 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, deep mixing of the soil in real and field scale has been implemented in a layer of clay soil with low pasty properties of CL type. Mixing of deep desert 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 hourly (collective) 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 resistance 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 processing.

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Amirkabir Journal of Civil Engineering

Articles in Press, Accepted Manuscript
Available Online from 04 September 2024

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