Analyzing the Effect of Nano-Silica-Cement Mixture on Shear Strength of Babolsar Sandy Soil

Document Type : Research Article

Authors

1 Geotechnical Engineering Department, Faculty of Civil Engineering, Babol Nushirvani University of Technology, Mazandaran, Iran

2 Faculty of Civil Engineering, Mazandaran Institute of Technology, Mazandaran, Iran

3 Faculty of Civil Engineering, Shahid Rajaee teacher training University, Tehran, Iran

Abstract

In many cases, natural soil does not have the required strength and needs to be improved. One of these methods is soil improvement with the use of additives. In this method the engineering properties of soil are improved by being mixed with one or more other materials. Nano-silica which is a very active pozzolan can also be considered as a stabilizer to perform cementation reactions. In this study, the effect of cement and nanosilica mixture on Babolsar sandy soil shear strength within 7 and 28 days has been studied. Direct shear tests are performed on specimens containing 4, 6 and 8 percent of dry weight of sand, cement and 10, 30 and 50% of the weight of cement nano-silica with the density of 98%. The results showed that the addition of nano-silica to cement up to a certain percentage increases the shear strength and shear strength decreases with additional amounts. In this study 30 percent increase in nano-silica is followed by the optimized shear strength improvement

Keywords

Main Subjects

References

[1] Dermatas, D., Meng, X.G., Utilization of fly ash for stabilization /solidification of heavy metal contaminated soils. Engineering Geology 70: (2003) 377-394.
[2] Gutierrez, M. S., Nano-geomechanics potential applications of nano-mechanics in geotechnical engineering. in: Proc. of the International Workshop on Micro-Geomechanics Across Multiple Strain Scales Cambridge, UK: (2005) 29-30.
[3] Naderi, N., Naeini, S.A., The influence of polymer inclusion and plasticity index on the unconfined compression strength of clays. Proc. of the 2nd International Conf. on New Developments in Soil Mechanics and Geotechnical Engineering, Nicosia, North Cyprus. (2009)
[4] Dupas, J., Pecker, A., Static and dynamic properties of sand cement. Journal of Geotechnical ASCE J Geotech Eng 105(3) (1979) 419-436.
[5] Shihata, S. A., Baghdadi, Z.A.,. Simplified method to assess freeze-thaw durability of soil cement. Journal of Materials in Civil Engineering 13(4) (2001) 243-247.
[6] Esmaeilipour, E., The effect of recession on cement industry and solutions to exit from it. Cement Technology Journal, (2015) (In Persian).
[7] Yılmaz, B., Uçar, A., Öteyaka, B., Uz, V., Properties of zeolitic tuff (clinoptilolite) blended portland cement. Building and Environnement 42(11) (2007) 3808-3815.
[8] Ardestani, P., The environmental effects of using nanosilica in concrete. MS.C. thesis, K. N. Toosi University of Technology, (2008) (In Persian).
[9] Ramzanianpour, A., Firoozmakan, Sh., Ebadi, T., Bahrami, H., The effect of nanosilica on the physical properties and durability of concrete. 6th Civil Engineering Congress, Semnan, (2011) (In Persian).
[10] Sobolev, K., Flores, I., Hermosillo, R., Torres-Martinez, L., Nanomaterials and nanotechnology for high-performance cement composites. Journal of American Concrete Institute 254 (2006) 93-129.
[11] Tobon, J. L., Restrepo, O. J., Paya, J., Comparative analysis of performance of portland cement blended with nano silica and silica fume. Dyna Magazine 163 (2010) 37-48.
[12] Ghazavi, M., Boulhasani, M., Design and construction of grout using lime and nanosilica for stabilization of kaolinite and study of its parameters for application in trash burying sites. 2nd International Symposium of Environment, (2009) (In Persian).
[13] Taha, M. R. (2009). "Geotechnical properties of soil-ball milled soil mixtures" Nanotechnology in Construction 3: 377-385.
[14] Yonekura, R., Miwa, M. (1993). "Fundamental properties of sodium silicate based grout." Proceedings of the 11th Southeast Asia Geotechnical Conference, Singapore: 439-444
[15] Gallagher, P. M., Mitchel, J. K., Influence of collodical silica grout on liquefaction potential and cyclic undrained behavior ond loose sand. Soil Dynamics and Earthquake Engineering 22 (2002) 1017-1026.
[16] Taipodia, J., Dutta, J., Dey, A.K., Effect of nano particles on properties of soil. Proceedings of Indian Geotechnical Conference, December 15-17, (2011) Kochi.
[17] Mohamadzadeh Sani, A., Arabani, M., Haghi, A.K., Chenari, R.J., Effect of nanoclay additive on the geotechnical properties of silty sands. in: Proc. of 4th International Conference on Geotechnical Engineering and Soil Mechanics, Tehran, (2010) (In Persian).
[18] Janalizadeh Choobbasti, A., Vafaei, A., Soleimani Kutanaei, S., Evaluation of the combined effect of cement and nanosilica on the strength of Caspian sea sand. 1st National Conference on Geotechnical Engineering, University of Mohaghegh Ardabili, (2013) (In Persian).
[19] Sadrjamali, M., Athar, S. M., Negahdar, A., Modifying soil shear strength parameters using additives in laboratory condition. Curr World Environ 10(1) (2015) 120-130.
[20] Annual Book of ASTM Standards, Standard test method for sieve analysis of fine and coarse aggregates. American Society for Testing and Materials, West Conshohocken. (2012)
[21] Annual Book of ASTM Standards, Standard test methods for minimum index density and unit weight of soils and calculation of relative density. American Society for Testing and Materials, West Conshohocken. (2012)
[22] Annual Book of ASTM Standards, Standard test methods for maximum index density and unit weight of soils using a vibratory table. American Society for Testing and Materials, West Conshohocken. (2012)
[23] Annual Book of ASTM Standards, Standard test for specific gravity of soil solids by water pycnometer. American Society for Testing and Materials, West Conshohocken. (2012)
[24] Noorzad, R., The behavioral characteristics of geotextile-reinforced sand. Ph.D. thesis, Sharif University, Tehran, (2000) (In Persian).
[25] Sadaghiani, M., Nasr, M., A study on the effect of concentration on the permeability and physical and mechanical behavior of injected sand with silicate grout. 4th National Congress on Civil Engineering, (2008) (In Persian).
[26] Annual Book of ASTM Standards, Standard test methods for laboratory compaction characteristics of soil. American Society for Testing and Materials, West Conshohocken. (2012)
[27] Annual Book of ASTM Standards, Standard test method for direct shear test of soils under consolidated drained conditions. American Society for Testing and Materials, West Conshohocken. (2012)
[28] Ladd, R. S., Preparing test specimens using undercompaction. Geotechnical Testing Journal 1(1) (1978) 16-23.
Amirkabir Journal of Civil Engineering
Volume 50, Issue 1
March and April 2018
Pages 179-188

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