Soil Improvement of Clayey Sand Using Nanoparticle
The field of nanotechnology encompasses all technologies that operate on a nanoscale, typically ranging from 1 to 100 nanometers. Nano-particles are the most commonly used materials in this technology. Given the provided definition of nanotechnology, there is a growing interest in exploring its appl...
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Sharif University of Technology
2025-03-01
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| Series: | مهندسی عمران شریف |
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| Online Access: | https://sjce.journals.sharif.edu/article_23525_ba09cf0f73b49ad65db2cc885fc876ab.pdf |
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| author | S. Rahmati sardasht A. A. Heshmati |
| author_facet | S. Rahmati sardasht A. A. Heshmati |
| author_sort | S. Rahmati sardasht |
| collection | DOAJ |
| description | The field of nanotechnology encompasses all technologies that operate on a nanoscale, typically ranging from 1 to 100 nanometers. Nano-particles are the most commonly used materials in this technology. Given the provided definition of nanotechnology, there is a growing interest in exploring its applications in the field of geotechnical engineering. Recently, numerous researchers have directed their efforts toward discovering these applications. This intense interest stems from the unique properties of these particles and their potential to enhance the mechanical and structural characteristics of soil. This article explores the impact of different percentages of calcium oxide and aluminum oxide nanoparticles on the compressive strength of clayey sandy soil with a constant clay content. To achieve this, clayey sandy soil comprising 80% sand and 20% clay, after being treated with varying percentages (0.05%, 0.1%, and 0.2% by dry soil weight) of nanoparticles, including aluminum oxide and calcium oxide, in three different curing times of 7, 14 and 28 days was tested for unconfined compressive strength. The results indicate that samples containing 0.05%, 0.1%, and 0.2% aluminum oxide nanoparticles after 28 days of curing experienced a 24.92%, 46.78%, and 43.28% increase in strength, respectively, compared to the control sample. Similarly, the increase in strength for samples with calcium oxide nanoparticles was 18.73%, 40.43%, and 36.72%, respectively. According to the findings, the curing time did not significantly affect strength improvement, and the optimum percentage for both types of nanoparticles was determined to be 0.1%. Further analysis of stress-strain curves revealed that samples with aluminum oxide nanoparticles exhibited a more brittle behavior compared to those with calcium oxide nanoparticles. Subsequently, the samples were analyzed for microstructural investigations using Field Emission Scanning Electron Microscopy (FESEM). The microstructural examinations demonstrated better compactness among the treated samples, indicating improved microstructural characteristics in the nanoparticle-amended soils. |
| format | Article |
| id | doaj-art-67193dd3ff154d4ebf23d38bedc569cd |
| institution | DOAJ |
| issn | 2676-4768 2676-4776 |
| language | fas |
| publishDate | 2025-03-01 |
| publisher | Sharif University of Technology |
| record_format | Article |
| series | مهندسی عمران شریف |
| spelling | doaj-art-67193dd3ff154d4ebf23d38bedc569cd2025-08-20T02:59:10ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762025-03-0140410811510.24200/j30.2024.63620.327923525Soil Improvement of Clayey Sand Using NanoparticleS. Rahmati sardasht0A. A. Heshmati1Master Student in Geotechnical Engineering at Iran University of Science and Technology, Tehran, Iran.Associate Prof., Faculty of Civil Engineering at Iran University of Science and Technology, Tehran, Iran.The field of nanotechnology encompasses all technologies that operate on a nanoscale, typically ranging from 1 to 100 nanometers. Nano-particles are the most commonly used materials in this technology. Given the provided definition of nanotechnology, there is a growing interest in exploring its applications in the field of geotechnical engineering. Recently, numerous researchers have directed their efforts toward discovering these applications. This intense interest stems from the unique properties of these particles and their potential to enhance the mechanical and structural characteristics of soil. This article explores the impact of different percentages of calcium oxide and aluminum oxide nanoparticles on the compressive strength of clayey sandy soil with a constant clay content. To achieve this, clayey sandy soil comprising 80% sand and 20% clay, after being treated with varying percentages (0.05%, 0.1%, and 0.2% by dry soil weight) of nanoparticles, including aluminum oxide and calcium oxide, in three different curing times of 7, 14 and 28 days was tested for unconfined compressive strength. The results indicate that samples containing 0.05%, 0.1%, and 0.2% aluminum oxide nanoparticles after 28 days of curing experienced a 24.92%, 46.78%, and 43.28% increase in strength, respectively, compared to the control sample. Similarly, the increase in strength for samples with calcium oxide nanoparticles was 18.73%, 40.43%, and 36.72%, respectively. According to the findings, the curing time did not significantly affect strength improvement, and the optimum percentage for both types of nanoparticles was determined to be 0.1%. Further analysis of stress-strain curves revealed that samples with aluminum oxide nanoparticles exhibited a more brittle behavior compared to those with calcium oxide nanoparticles. Subsequently, the samples were analyzed for microstructural investigations using Field Emission Scanning Electron Microscopy (FESEM). The microstructural examinations demonstrated better compactness among the treated samples, indicating improved microstructural characteristics in the nanoparticle-amended soils.https://sjce.journals.sharif.edu/article_23525_ba09cf0f73b49ad65db2cc885fc876ab.pdfsoil improvementnanotechnologycalcium oxidealuminum oxideunconfined compressive strength |
| spellingShingle | S. Rahmati sardasht A. A. Heshmati Soil Improvement of Clayey Sand Using Nanoparticle مهندسی عمران شریف soil improvement nanotechnology calcium oxide aluminum oxide unconfined compressive strength |
| title | Soil Improvement of Clayey Sand Using Nanoparticle |
| title_full | Soil Improvement of Clayey Sand Using Nanoparticle |
| title_fullStr | Soil Improvement of Clayey Sand Using Nanoparticle |
| title_full_unstemmed | Soil Improvement of Clayey Sand Using Nanoparticle |
| title_short | Soil Improvement of Clayey Sand Using Nanoparticle |
| title_sort | soil improvement of clayey sand using nanoparticle |
| topic | soil improvement nanotechnology calcium oxide aluminum oxide unconfined compressive strength |
| url | https://sjce.journals.sharif.edu/article_23525_ba09cf0f73b49ad65db2cc885fc876ab.pdf |
| work_keys_str_mv | AT srahmatisardasht soilimprovementofclayeysandusingnanoparticle AT aaheshmati soilimprovementofclayeysandusingnanoparticle |