Improvement of Geotechnical Characteristics of Clay Soils Using Lime

Abstract:

This study presents the results of an experimental work carried out to investigate the effects of treatment of fine bentonite clay using various contents of lime. Tests conducted verified substantial changes and significant improvement in physical and mechanical characteristics of the clay. Techniques including ultrasonic tests and unconfined compression were utilized for a series of lime content (0%,2%, 4% and 6%) for variable curing times. The studied clay soils revealed that lime treated clays get changed and improved with regard to particular geotechnical characteristics due to cation exchanges, particle rearrangements and pozzolanic reactions. The analysis of ultrasonic tests and compressive strength showed a process of gradual increase in strength and compactness of the reaction products over time. For an optimum dose and extended curing time, the stabilized soil acts as a rock.

• Periodical: Advanced Materials Research (Volume 1105)
• Pages: 315-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1105.315
• Online since: May 2015
• Authors: Bahia Louafi*, Billal Hadef, Ramdane Bahar
• Keywords: Bentonite, Compression, Lime, Stabilization, Swelling Clay, Treatment

References

[1] M. Afes & G. Didier, Bulletin Engineering Geology Environment, Vol. 59 (1999), p.75.

[2] F. Guerridi Z. Derriche. Détermination du taux optimal pour la stabilisation des sols à la chaux. First Méditerranéen Symposium of Géo engineering, SMGE09. Vol. 1 (2009), p.598.

[3] K.M. Gueddouda, A. Smaida A., B. Mekerta B., M. Lamara and I. Goual 2009, Stabilization and shear strength of inflating clays [bentonite of Maghnia]", Seminar international Department of Civil engineering, Institute of higher learning of the technological studies of Sfax, Tunisia (2009).

[4] V. M. Malhotra and N. J. Carino, Handbook on Destructive Testing of Concrete, Edition Eyrolles, 2003. doi: 10. 1201/9781420040050.

[5] M. Goueygou. Non-Destructive Testing in Civil Engineering, (2003).

[6] S.A. A Khattab S.A.A., M. Al-Mukhtar, J.M. Fleureau, Journal of Materials in Civil Engineering, vol. 19 (2007), p.358.

[7] F.G. Bell. Lime stabilization of clay minerals and soils. Engineering Geology, 42(4) (1996), p.223.

DOI: 10.1016/0013-7952(96)00028-2

[8] H. Brandl. Comptes rendus du Xème congrès international de mécanique des sols et des travaux de fondations, Stockholm, Vol. 3 (1981), p.15.

[9] F.G. Bell. . Stabilization and treatment of clay soils with lime, Ground engineering, (1988), p.10.

[10] M. Choquette and al. Mineralogical and micro textural changes associated with lime stabilization of marine of eastern Canada. Groupe de recherche en Geo. de l'Ing. Dept. de Geo. Canada (1987).