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Advances in Materials Research Volume 13, Number 1, February 2024 , pages 19-35 DOI: https://doi.org/10.12989/amr.2024.13.1.019 |
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Assessing the impact of nanoclay on the permeability and geotechnical properties of fine-grained soils in landfill liners |
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Mahdi Nikbakht, Fariba Behrooz Sarand, Rouzbeh Dabiri and Masoud Hajialilue Bonab
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| Abstract | ||
| Presented Article evaluates the effect of nanoclay on permeability, compressive strength, and plasticity behavior of fine-grained soil related to the Tabriz landfill site. In this regard, comprehensive experimental study was performed on taken soil samples (42 specimens) with aim of design high-performance liners for Tabriz landfill. The samples was mixed by 0% (control) 3%, 6% and 9% nanoclay and prepared in 1, 7, 14 and 28 days before testing stage. Index tests like particle-size, permeability, atterberg limits, and uniaxial compressive strength (UCS) was conducted on samples. The results show that studied soil is classified as CL in USCS classification and atterberg limits measured as LL is 37, PL is 20.67, and PI is 16.33 which increase into 75, 45, and 30. The assessment presented the LL was increased about 20.27% based on increasing in nanoclay from 0% to 9%. These variations for PL and PI were 21.77% and 18.37%, respectively. Also, the and soil's compressive strength is increase from 120 kPa to 188 kPa and permeability is estimated as 4.25*10-6 m/s which reduced into the 6.34*10-9 m/s with respect the naboclay content increases form 0% to 9%. | ||
| Key Words | ||
| fine-grained Soils; landfill liners; leachate control; nanoclay; permeability | ||
| Address | ||
| Mahdi Nikbakht, Fariba Behrooz Sarand and Rouzbeh Dabiri: Department of Civil Engineering, Islamic Azad University, Tabriz Branch, Tabriz, Iran Masoud Hajialilue Bonab: Department of Civil Engineering, University of Tabriz, Tabriz, Iran | ||
