Influence of Nano Silica on the Geotechnical Properties of Clayey Soil Stabilized with Lime
DOI:
https://doi.org/10.51983/ajeat-2018.7.1.887Keywords:
Compaction, Lime, Nano Silica, Plasticity, Stabilization, Unconfined Compressive StrengthAbstract
The soil must be able to withstand the load and transfer it to ground within the range of allowable deformations, for which it must possess good physical and geotechnical properties. The conventional method of stabilization such as removal and replacement of ill – suited soils incur higher cost and is time consuming. A new method of stabilization, designated as chemical stabilization can be adopted. This method initiate chemical reactions such as cation exchange, pozzolanic activity etc., which consequently enhance the geotechnical properties of soil. In this study, the mechanical behavior of soil is improved by addition of nanoparticles i.e., nano silica along with cementitious material, lime. Considering economic issues of nano silica usage and results of this research in soil stabilization projects, in this study 0, 1, 3 and 5 % weight of nano silica is used as well as 0, 2 and 4 % weight of lime is used. The effect of these replacements is studied by Atterberg limits test, compaction test and unconfined compressive strength (UCS) test. The effect of curing time on samples at 3, 7 and 28 days of age has also been investigated. The optimum percentage replacement of nano silica in lime stabilized soil is determined. The microstructure of the stabilized soil is studied by Scanning electron microscopy (SEM) test. Thus the results proved that there is a significant improvement in the plasticity, compaction and strength properties with slight addition of nano silica in clayey soil mixed with lime.
References
A. A. S. Correia and M. G. Rasteiro, "Nanotechnology Applied to Chemical Soil Stabilization," in International Conference on Transportation Geotechnics, vol. 143, pp. 1252-1259, June 2016.
F. G. Bell, "Lime Stabilization of Clay Minerals and Soil," Journal of Engineering Geology, vol. 42, pp. 223-237, 1996.
E. Nohani and E. Alimakan, "The Effect of Nano Particles on Geotechnical Properties of Clay," International Journal of Life Science, vol. 9, pp. 25 - 27, 2015.
F. Changizi and A. I. Haddad, "Strength Properties of Soft Clay Treated with Mixture of Nano-SiO2 and Recycled Polyester Fiber," Journal of Rock Mechanics and Geotechnical Engineering, vol. 7, pp. 367 – 378, 2015.
P. Hareesh and R. Vinothkumar, "Assessment of Nano Materials on Geotechnical Properties of Clayey Soils," in International Conference on Engineering Innovations and Solutions, pp. 66 – 70, 2016.
M. A. Pashabavandpouri and S. Jahangiri, "Effect of Nano-Silica on Swelling, Compaction and Strength Properties of Clayey Soil Stabilized with Lime," Journal of Applied Environmental and Biological Sciences, vol. 5, no. 7S, pp. 538-548, May 2015.
M. Al-Mukhtar, A. Lasledj, and J. F. Alcover, "Lime Consumption of Different Clayey Soils," Applied Clay Science, vol. 24, pp. 1-13, 2014.
N. Ghasabkolaei, A. J. Choobbasti, N. Roshan, and S. E. Ghasemi, "Geotechnical Properties of the Soils Modified with Nano Materials: a Comprehensive Review," Archives of Civil and Mechanical Engineering, vol. 17, pp. 639-650, 2017.
L. K. Sharma, N. N. Sirdesai, K. M. Sharma, and T. N. Singh, "Experimental study to examine the independent roles of lime and cement on the stabilization of a mountain soil: A comparative study," Applied Clay Science, vol. 10, pp. 1-13, Nov. 2017.
S. Babu and S. Joseph, "Effect of Nano Materials on Properties of Soft Soil," International Journal of Science and Research, vol. 5, no. 8, pp. 634 – 637, 2016.
S. H. Bahmani, B. B. K. Huat, A. Asadi, and N. Farazadnia, "Stabilization of Residual Soil Using SiO2."
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