Experimental Study of Failure Mechanisms of Soil Cement Columns under Embankment Loading

Mehran Pourakbar, Abbas Soroush, Mohammad Khosravi, Wen Yi Hung, Ali Nabizadeh, Jun Xue Huang

Research output: Contribution to journalConference articlepeer-review


This paper describes the centrifuge model construction procedure for an embankment on a soft clay profile reinforced by Soil-Cement (SC) columns and presents preliminary results and observations of the ground and embankment responses. Centrifuge model corresponded to, in model scale units, a 12 cm embankment with a relative density of 80% underlain by a 23 cm soft clay layer. Three rows of floating SC columns with a diameter of 2 cm and spacing of 2.4 cm were installed below the embankment toe. The centrifuge modeling procedure including soil consolidation, SC column mix design, and their installation under the embankment toe is described in detail. The results indicated that the prominent failure mode of low-strength SC columns is tension-bending failure. In addition, it was observed that the embankment crest experienced large settlement due to lateral deformation of the foundation soil and SC columns.

Original languageEnglish
Pages (from-to)173-181
Number of pages9
JournalGeotechnical Special Publication
Issue numberGSP 336
StatePublished - 2022
Event2022 GeoCongress: State of the Art and Practice in Geotechnical Engineering - Advances in Monitoring and Sensing; Embankment, Slopes, and Dams; Pavements; and Geo-Education - Charlotte, United States
Duration: 20 Mar 202223 Mar 2022


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