Geosynthetic Encased Column — An Alternative of Technical Solutions in Soft Soil Improvement in Viet Nam

Department of Geotechnics, Faculty of Geology and Petroleum Engineering, HCMC University of Technology, Viet Nam

Abstract: Several technical solutions such as prefabricated vertical drain (PVD), surface and deep compaction, vacuum drainage, preloading as well as stone column with/without geotextile have been available in soft soil improvement for the construction of structures such as a heavy load building — power plant, storage tanks — petroleum refinery and so on. One of efficient solutions is to use geosynthetic encased columns transferring the loads of the large and rigid structures to stronger soil layers which reduce significantly not only settlement but also consolidation time. The paper presents a study on the use of geosynthetic encased column as an alternative solution for the land reclamation in cases of an extension of fabrication yard PTSC-MC and power plant Nhon Trach 2 (NT2) project. The proposed solution is also compared with other methods and the results are shown.