Performance Evaluation of a Collapsible Soil Reinforced with Compacted Lateritic Soil Columns
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 145, Issue 9
Abstract
This study was carried out to evaluate a technique to improve lateritic soil layers that are susceptible to collapse upon wetting so that they can be used to support shallow foundations. Specifically, this study focused on the impact of placing groups of compacted lateritic soil columns within a collapsible soil layer, because this may be a more cost-effective alternative than excavating the entire collapsible soil layer and replacing it with a monolithic compacted fill. For this research, oedometer and centrifuge model tests were performed on a lateritic soil collected in the southeastern part of Brazil. The results of the centrifuge tests were used in a numerical analysis to examine the performance of shallow foundations on collapsible soils reinforced with compacted columns under inundated conditions. The experimental and numerical results indicate that such a technique can improve the load-displacement response of shallow foundations constructed on the soil tested and reduce wetting-induced collapse settlements.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors would like to acknowledge the State of São Paulo Research Foundation (FAPESP) (Grant No. 2016/21601-0), the National Council for Scientific and Technological Development (CNPq) (Process 306675/2015-3), and the Coordination of Improvement of Higher Education Personnel (CAPES) (for granting the first author’s scholarship).
References
ASTM. 1995. Test method for laboratory compaction characteristics of soils using standard effort. ASTM D698. West Conshohocken, PA: ASTM.
Bell, F. G. 2000. Engineering properties of soils and rocks. Oxford, UK: Blackwell.
De Freitas, M. C., C. H. C. Tsuha, and O. M. Vilar. 2017. “Briefing: Compacted soil columns for collapsible lateritic soil improvement.” Proc. Inst. Civ. Eng. Ground Improv. 170 (4): 186–192. https://doi.org/10.1680/jgrim.16.00019.
Dickin, E. A., and C. F. Leung. 1983. “Centrifugal model tests on vertical anchor plates.” J. Geotech. Eng. 109 (12): 1503–1525. https://doi.org/10.1061/(ASCE)0733-9410(1983)109:12(1503).
Ferreira, R. S. M. 2007. “Collapsible and swelling soils: An overview of Brazil.” [In Portuguese.] In Vol. 1 of Proc., Brazilian Symp. on Unsaturated Soils, 593–618. Salvador, Brazil: Federal University of Bahia Press.
Gaudin, C., M. J. Cassidy, B. Bienen, and M. S. Hossain. 2011. “Recent contributions of geotechnical centrifuge modelling to the understanding of jack-up spudcan behaviour.” Ocean Eng. 38 (7): 900–914. https://doi.org/10.1016/j.oceaneng.2010.12.001.
Jennings, J. E., and K. Knight. 1957. “The additional settlement of foundations due to a collapse of structure of sandy sub soils on wetting.” In Vol. 1 of Proc., 4th Int. Conf. on Soil Mechanics and Foundation Engineering, 316–319. London: Butterworths.
Jennings, J. E., and K. Knight. 1975. “A guide to construction on or with materials exhibiting additional settlement due to collapse of grain structure.” In Vol. 1 of Proc., 6th Regional Conf. for Africa on Soil Mechanics and Foundation Engineering, 99–105. Rotterdam, Netherlands: A.A. Balkema.
Machado, S. L. 1998. “Elastoplastic concepts applied to non-saturated soils.” [In Portuguese.] Ph.D. thesis, Dept. of Geotechnical Engineering, Univ. of São Paulo.
Medero, G. M., F. Schnaid, and W. Y. Gehling. 2009. “Oedometer behavior of an artificial cemented highly collapsible soil.” J. Geotech. Geoenviron. Eng. 135 (6): 840–843. https://doi.org/10.1061/(ASCE)1090-0241(2009)135:6(840).
Nogami, J. S., and D. F. Villibor. 1995. Low-cost paving with lateritic soils. [In Portuguese.] São Paulo, Brazil: Vilibor Publisher.
Osinubi, K. J., and C. M. Nwaiwu. 2006. “Design of compacted lateritic soil liners and covers.” J. Geotech. Geoenviron. Eng. 132 (2): 203–213. https://doi.org/10.1061/(ASCE)1090-0241(2006)132:2(203).
Otálvaro, I. F., M. P. C. Neto, and B. Caicedo. 2015. “Compressibility and microstructure of compacted laterites.” Transp. Geotech. 5 (1): 20–34. https://doi.org/10.1016/j.trgeo.2015.09.005.
Souza, A., J. C. A. Cintra, and O. M. Vilar. 1995. “Shallow foundations on collapsible soil improved by compaction.” In Vol. 2 of Proc., 1st Int. Conf. on Unsaturated Soils, edited by E. E. Alonso and P. Delage, 1017–1021. Rotterdam, Netherlands: A.A. Balkema.
Taylor, R. E. 2014. Geotechnical centrifuge technology. Boca Raton, FL: CRC Press.
Vargas, M. 1988. “Special lecture: Collapsible and expansive soils in Brazil.” In Vol. 2 of Proc., 2nd Int. Conf. on Geomechanics in Tropical Soils, 489–492. Rotterdam, Netherlands: A.A. Balkema.
Wang, Y., and F. H. Kulhawy. 2008. “Reliability index for serviceability limit state of building foundations.” J. Geotech. Geoenviron. Eng. 134 (11): 1587–1594. https://doi.org/10.1061/(ASCE)1090-0241(2008)134:11(1587).
Information & Authors
Information
Published In
Copyright
©2019 American Society of Civil Engineers.
History
Received: Aug 2, 2018
Accepted: Feb 20, 2019
Published online: Jul 11, 2019
Published in print: Sep 1, 2019
Discussion open until: Dec 11, 2019
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.