Investigating the Effect of Nanoclay Additives on the Geotechnical Properties of Clay and Silt Soil

Document Type: Original Article

Authors

Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Abstract

With the rapid development of nanotechnology multi-disciplinary cross applications as well as the limitations of traditional materials, nanomaterials have been introduced to improve the soil. This paper investigates the potential advantages of nanotechnology for innovative solutions in the area of soil improvement. Studies on applied nanomaterials in geotechnical engineering show the way these
nanoparticles are applied to improve soil engineering parameters. In the present Study, we aimed to investigate the effect of adding Nano clay on the geotechnical properties of clay and silt soil and improve their engineering properties. For this purpose, a series of tests were conducted including granulation, uniaxial, direct shear, Atterberg limits, compaction and triaxial tests on clay and silty soils. The results show that the liquid and plastic limits of soil will increase with increase in nanoparticles in soil composition. Also according to the results of compaction test, with increase in Nano clay the unit weight of clay soil will increase and optimum moisture content will decrease. According to the results from direct shear tests, by increase in nanoparticles, the adhesion of clay and silt soils also increase,  however the internal friction angle of both clay and silt soil is reduced.

Keywords


[1] Gallagher PM, Conlee CT, Rollins KM. Full-scale field testing of colloidal silica grouting for mitigation of liquefaction risk. Journal of Geotechnical and Geo environmental Engineering. 2007 Feb; 133(2):186-96. [View at Google Scholar] ; [View at Publisher].

 [2] Balba AM. Management of problem soils in arid ecosystems. CRC Press; 2018 May 2. [View at Google Scholar] ; [View at Publisher].

 [3] Seddon KD. Reactive soils. In engineering geology of Melbourne 2018 Feb 6 (pp. 33-37). Routledge. [View at Google Scholar] ; [View at Publisher].

 [4] Gong X, Huang D, Liu Y, Peng Z, Zeng G, Xu P, Cheng M, Wang R, Wan J. Remediation of contaminated soils by biotechnology with nanomaterials: bio-behavior, applications, and perspectives. Critical reviews in biotechnology. 2018 Apr 3; 38(3):455-68. [View at Google Scholar] ; [View at Publisher].

 [5] Pietrzykowski M, Woś B, Pająk M, Wanic T, Krzaklewski W, Chodak M. The impact of alders (Alnus spp.) on the physio-chemical properties of techno sols on a lignite combustion waste disposal site. Ecological engineering. 2018 Sep 30; 120:180-6. [View at Google Scholar] ; [View at Publisher].

 [6] Chang I, Cho GC. Shear strength behavior and parameters of microbial gellan gum-treated soils: from sand to clay. Acta Geotechnical. 2019 Apr 1;14(2):361-75. [View at Google Scholar] ; [View at Publisher].

 [7] Taha MR. Geotechnical properties of soil-ball milled soil mixtures. In Nanotechnology in Construction 3 2009 (pp. 377-382). Springer, Berlin, Heidelberg. [View at Google Scholar] ; [View at Publisher].

 [8] Dermatas D, Meng X. Utilization of fly ash for stabilization/solidification of heavy metal contaminated soils. Engineering Geology. 2003 Nov 1; 70(3-4):377-94. [View at Google Scholar] ; [View at Publisher].

 [9] Naseri F. Dynamic Mechanical Behavior of Rock Materials. Journal of Civil Engineering and Materials Application. 2017 Oct 17; 1(2):39-44. [View at Google Scholar] ; [View at Publisher].

 [10] Asgari MR, Dezfuli AB, Bayat M. Experimental study on stabilization of a low plasticity clayey soil with cement/lime. Arabian Journal of Geosciences. 2015 Mar 1; 8(3):1439-52. [View at Google Scholar] ; [View at Publisher].

 [11] Chow BJ, Chen T, Zhong Y, Qiao Y. Direct formation of structural components using a Martian soil simulant. Scientific reports. 2017 Apr 27; 7(1):1151. [View at Google Scholar] ; [View at Publisher].

 [12] Lin DF, Lin KL, Hung MJ, Luo HL. Sludge ash/hydrated lime on the geotechnical properties of soft soil. Journal of hazardous materials. 2007 Jun 25; 145(1-2):58-64. [View at Google Scholar] ; [View at Publisher].

 [13]  Lambe TW, Whitman RV. Soil mechanics SI version. John Wiley & Sons; 2008. [View at Google Scholar] .

 [14] Hillel D. Fundamentals of soil physics. Academic press; 2013 Oct 22. [View at Google Scholar].

 [15] Astm D. 3080-90: Standard test method for direct shear test of soils under consolidated drained conditions. Annual book of ASTM standards. 1994; 4:290-5. [View at Google Scholar].