Volume Change and Cracks Behavior of Lime Treated Expansive Soils

  • Abdulrahman Aldaood Civil Department, College of Engineering, Mosul University, Mosul, Iraq
  • Amina Khalil Civil Department, College of Engineering, Mosul University, Mosul, Iraq
  • Ibrahim Alkiki Civil Department, College of Engineering, Mosul University, Mosul, Iraq
  • Madyan Alsaffar Civil Department, College of Engineering, Mosul University, Mosul, Iraq

Abstract

This research work study the influence of cyclic wetting and drying on free swell potential of untreated and lime treated expansive clayey soils. Such a study is required to understand the behavior of these soils during wet-dry cycles. Two expansive soils (a polwhite bentonite and a kaolinite) with different plasticity indexes were used in this study. The soil samples were treated with different lime content in the order of (3, 5 and 7% by the dry weight of soil). The lime treated soil samples were cured at 20ºC for 28 and 180 days. The untreated and lime treated soil samples were subjected to four wet-dry cycles. Free swell potential and cracks propagation were studied during lime addition and wet-dry cycles. Results showed that, the free swell potential of untreated soil samples; in general; decreased with increasing wet-dry cycles, and all of the soil samples reached equilibrium after the second cycle. While the cracks propagation increased with these cycles, especially of bentonite soil samples. Larger cracks propagation has been observed in the bentonite soil samples. Lime addition enhanced the free swell potential values of  the two expansive soils and there was a drastic decrease in free swelling potential and cracks propagation of these soils. The beneficial effect of lime treatment to control the swelling values was partly lost by the first wet–dry cycles, and the free swell potential increased at the subsequent cycles.

References

1. Kodikara, J., Barbour, S. L. and Fredlund, D. G., “Change in Clay Structure and Behavior due to Wetting and Drying”, Proceeding of the 8th Australian- New Zealand Conference on Geomechanics, Hobart Tasamia, PP. 179-196, 1999.
2. Abdullah, W. S., Alshibli, k. A. and Al-Zou ,bi, M. S., “Influence of Pore Water Chemistry on the Swelling behavior of Compacted Clays”, Applied Clay Science, No. 15, pp. 447-462, 1999.
3. Afès, M., Didier, G., 2000. Stabilization of expansive soils: the case of clay in the area of Mila (Algeria). Bulletin of Engineering Geological Environment 59 (1), 75–83.
4. Akcanca f. and Aytekin M. (Effect of wetting–drying cycles on swelling behavior of lime stabilized sand–bentonite mixtures) Environ Earth Sci (2012) 66:67–74
5. Al-Mukhtar, M., Lasledj, A., Alcover, J.F., 2014. Lime consumption of different clayey soils. Appl. Clay Sci. 95, 133–145.
6. Al-Mukhtar,M., Khattab, S., Alcover, J.F., 2012. Microstructure and geotechnical properties of lime-treated expansive clayey soil. Eng. Geol. 139–140, 17–27.
7. Al-Mukhtar,M., Lasledj, A., Alcover, J.F., 2010. Behaviour and mineralogy changes in lime treated expansive soil at 20 °C. Appl. Clay Sci. 50, 191–198.
8. Alper, S., Gozde, I., Recep, Y.H., Kambiz, R., 2006. Utilisation of a very high lime fly ash for improvement of Izmir clay. Building and Environment 42 (2), 150–155.
9. Al-Rawas, A.A., Hago, A.W., Al-Sarmi, H., 2005. Effect of lime, cement and Sarooj
10. (artificial pozzolan) on the swelling potential of an expansive soil from Oman.
11. Building and Environment 40 (5), 681–687.
12. Basma, A. A., Al-Homoud, A. S., Malkawi, A. I. H., and Al-Bashabsheh, M. A., “ Swelling-Shrinkage Behavior of Natural Expansive Clays” , Applied Clay Science, No. 11, PP. 211-227, 1996.
13. Bell, F.G., 1996. Lime stabilization of clay minerals and soils. Eng. Geol. 42, 223–237.
14. Dasog, G. S., Acton, D. F., Mermut, A. R. and De Jong, E., “Shrink-Swell Potential and Cracking in Clay Soils of Saskatchewan”, Canadian Soil Science Journal, Vol.68, PP. 251-260, 1988.
15. Day, R.W. “Swell-Shrink Behavior of Compacted Clay”, Journal of Geotechnical Engg., ASCE, Vol.120,No.3, PP.618-623, 1994.
16. Guney Y, Sari D, Cetin M, Tuncan M (2007) Impact of cycling wetting–drying on swelling behavior of lime-stabilized soil. Build Environ 42(2):681–688.
17. Ingles, O.G., Metcalf, J.B., 1973. Soil Stabilization Principles and Practice. John Wiley & Sons, New York.
18. Little, D.N., 1995. Handbook for Stabilization of Pavement Sub Grade and Base Courses with Lime. National Lime Association, Kendall Hunt Publishing Company, Iowa, USA.
19. Rao SM, Reddy BVV, Muttharam M (2001) Impact of cycling wetting and drying on the swelling behaviour of stabilized expansive soils. Eng Geol 60(3–4):221–233.
20. Yazdandoust, F., Yasrobi, S.S., 2010. Effect of cyclic wetting and drying swelling behavior of polymer-stabilized expansive clays. Applied Clay Science 50, 461–468.
21. Zhang JR, Cao X (2002) Stabilization of expansive soil by lime and fly ash. Journal Wuhan University of Technology, Materials Science Edition, 17, 4, 73–77.
Published
2018-12-21
How to Cite
ALDAOOD, Abdulrahman et al. Volume Change and Cracks Behavior of Lime Treated Expansive Soils. Academic Journal of Nawroz University, [S.l.], v. 7, n. 4, p. 81-86, dec. 2018. ISSN 2520-789X. Available at: <http://journals.nawroz.edu.krd/index.php/ajnu/article/view/274>. Date accessed: 20 jan. 2019. doi: https://doi.org/10.25007/ajnu.v7n4a274.
Section
Articles

Most read articles by the same author(s)