Effect of Geotextile Encapsulation on Lime Column Axial Stress in Pontain Marine Clay

Abstract:

Previous researchers reported that problematic soft clay can be improved by deep lime stabilization. However, due to low confining pressure of surrounding soil, problems often occurred at top part of column which reduced the performance of lime column, such as: crushing at column head and higher settlement for surrounding soil at the upper part of column. Geotextile encapsulated lime column (GELC) was proposed in this study. The stresses on column are essential in the analysis on columnar improved soil. Multi-stage loading test was conducted on lime column and GELC stabilized Pontian marine clay aged 14 days, 28 days and 56 days in order to investigate axial stress on lime column and GELC stabilized Pontian marine clay. Geotextile encapsulation increased the compressive strength of lime column about 70 percent at axial strain of 8 percent.

• Periodical: Applied Mechanics and Materials (Volumes 773-774)
• Pages: 1402-1406
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.773-774.1402
• Online since: July 2015
• Authors: Siaw Yah Chong, Khairul Anuar Kassim*, Kenny Tiong Ping Chiet
• Keywords: Consolidation, Geotextile Encapsulation, Lime Column, Marine Clay, Stress-Strain Curve

References

[1] S. Glendinning, C. Rogers, Deep: Stabilisation Using Lime, Thomas Telford, London, (1996).

[2] Coastal Development Institute of Technology: The Deep Mixing Method Principle, Design and Construction, A. A. Balkema, Tokyo, (2002).

[3] B. B. Broms: Lime and lime/cement columns, in: K. Kirsch (Ed. ), Ground Improvement, Spon Press, 2004, pp.252-330.

DOI: 10.4324/9780203305201_chapter_8

[4] K. Kitsugi, R. Azakami: Lime column techniques for the improvement of clay ground, Proceedings of Symposium on Recent Developments in Ground Improvement Techniques, Bangkok(1982).

[5] G. Zheng, X. L. Gu, X. L. Xiang: Research on the mechanism of load transfer for cement-soil piles, Chinese Journal of Civil Engineering. 35(5) (2002) 82-86.

[6] M. Olsson, T. Edstam, C. Alén: Some experiences from full-scale test embankments on floating lime-cement columns, in: M. Kartunen, M. Leoni (Eds. ), Geotechnics of Soft Soils: Focus on Ground Improvement, Taylor & Francis Group, London, pp. (2009).

DOI: 10.1201/9780203883334.ch8

[7] J. Gniel, A. Bouazza: Improvement of soft soils using geogrid encased stone columns, Geotextile and Geomembrane. 27 (2009) 167-175.

DOI: 10.1016/j.geotexmem.2008.11.001

[8] S. Murugesan, K. Rajagopal: Model tests on geosynthetic-encased stone columns, Geosynthetics International. (2007) 346-354.

DOI: 10.1680/gein.2007.14.6.346

[9] C. S. Wu, Y. S. Hong: Laboratory tests on geosynthetic-encapsulated sand columns, Geotextiles and Geomembranes. (2009) 107–120.

DOI: 10.1016/j.geotexmem.2008.09.003

[10] M. Alamgir, N. Miura, M. R. Madhav: Analysis of granular column reinforced ground-1: estimation of interaction shear stresses, Saga, Japan(1993).

[11] H. B. Poorooshasb, G. G. Meyerhof: Analysis of behaviour of stone columns and lime columns, Computers and Geotechnics. 20(1) (1997) 47-70.

DOI: 10.1016/s0266-352x(96)00013-4

[12] S. Y. Chong and K. A. Kassim: Consolidation Characteristics of Lime Column and Geotextile Encapsulated Lime Column (GELC) Stabilized Pontian Marine Clay, The Electronic Journal of Geotechnical Engineering. 19 Bund A (2014) 129-141.

DOI: 10.11113/jt.v77.6388