Geotechnical Performance of Encapsulated and Stabilized Stone Columns in a Collapsible Soil
Publication: International Journal of Geomechanics
Volume 22, Issue 6
Abstract
Recent investigations have opened the prospect of using stone columns in collapsible soils through the use of geofabric encapsulation. However, the effectiveness of this type of ground improvement in such soils is still inconclusive. The main objective of this paper is to investigate the geotechnical performance of encapsulated and stabilized sand columns installed in a collapsible soil layer and subjected to full saturation. Fully penetrating sand columns, encapsulated in a geofabric and stabilized with some cementing agents, were tested. A Terram T3000 geofabric was used as the encapsulating material. The cementing agents used were lime, lime with fly ash, and cement. They were used in different proportions, in this case 4%, 8%, and 12%, respectively. The carrying capacity and settlement characteristics of the reinforced and stabilized columns were examined. Furthermore, analytical models were developed to predict the carrying capacity and settlement of encapsulated and stabilized sand columns. Validation of the developed models with the experimental results of the present investigation and with some data reported in the literature was also considered.
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Published In
International Journal of Geomechanics
Volume 22 • Issue 6 • June 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jan 15, 2021
Accepted: Dec 27, 2021
Published online: Mar 24, 2022
Published in print: Jun 1, 2022
Discussion open until: Aug 24, 2022
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