Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils
The proper design of protective structures may start from improving the characteristics of soils. In order to obtain reasonable safety criteria, several research studies have recently been dedicated to enhancing complex civil engineering structural systems with the use of nanotechnology. Thus, the f...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/4257530 |
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| author | Ali Ghorbani Hadi Hasanzadehshooiili Mostafa Mohammadi Fariborz Sianati Mahdi Salimi Lukasz Sadowski Jacek Szymanowski |
| author_facet | Ali Ghorbani Hadi Hasanzadehshooiili Mostafa Mohammadi Fariborz Sianati Mahdi Salimi Lukasz Sadowski Jacek Szymanowski |
| author_sort | Ali Ghorbani |
| collection | DOAJ |
| description | The proper design of protective structures may start from improving the characteristics of soils. In order to obtain reasonable safety criteria, several research studies have recently been dedicated to enhancing complex civil engineering structural systems with the use of nanotechnology. Thus, the following paper investigates the effect of nanospheres, including nanosilica (nano-SiO2) and nano zinc oxide (nano-ZnO), on lime-stabilized high-plasticity clay soil. For this purpose, unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were performed on samples. The results showed that the use of the selected nanospheres greatly increased the UCS of the samples compared to untreated soil. The UCS value of samples containing 6% lime and 1.5% nano-ZnO after 28 days of treatment increased by 5-fold compared to the UCS of untreated samples. In addition, the samples containing 6% lime and 2% nano-SiO2, with similar curing conditions, experienced a 5.3-fold increase in their UCS value compared to the untreated samples. These compounds were considered as the optimal amounts and showed the highest mechanical strength in both UCS and CBR tests. The same trend was achieved in the CBR test, in which the CBR value for the optimal mixtures containing nano-ZnO and nano-SiO2 was 14.8 and 16.6 times higher than that of high-plasticity clay soil, respectively. Finally, the results obtained from scanning electron microscopy (SEM) analysis revealed that the nanospheres caused a dense and compact matrix to form in the soil, which led to the enhancement of the mechanical strength of the treated samples. |
| format | Article |
| id | doaj-art-743f52e0f2fb47568faf03a07e1adcd3 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-743f52e0f2fb47568faf03a07e1adcd32025-02-03T06:13:12ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/42575304257530Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay SoilsAli Ghorbani0Hadi Hasanzadehshooiili1Mostafa Mohammadi2Fariborz Sianati3Mahdi Salimi4Lukasz Sadowski5Jacek Szymanowski6Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Guilan, IranDepartment of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Guilan, IranDepartment of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Guilan, IranPardis Branch, University of Guilan, Rasht, Guilan, IranDepartment of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Guilan, IranFaculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 37, 50-370 Wroclaw, PolandFaculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 37, 50-370 Wroclaw, PolandThe proper design of protective structures may start from improving the characteristics of soils. In order to obtain reasonable safety criteria, several research studies have recently been dedicated to enhancing complex civil engineering structural systems with the use of nanotechnology. Thus, the following paper investigates the effect of nanospheres, including nanosilica (nano-SiO2) and nano zinc oxide (nano-ZnO), on lime-stabilized high-plasticity clay soil. For this purpose, unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were performed on samples. The results showed that the use of the selected nanospheres greatly increased the UCS of the samples compared to untreated soil. The UCS value of samples containing 6% lime and 1.5% nano-ZnO after 28 days of treatment increased by 5-fold compared to the UCS of untreated samples. In addition, the samples containing 6% lime and 2% nano-SiO2, with similar curing conditions, experienced a 5.3-fold increase in their UCS value compared to the untreated samples. These compounds were considered as the optimal amounts and showed the highest mechanical strength in both UCS and CBR tests. The same trend was achieved in the CBR test, in which the CBR value for the optimal mixtures containing nano-ZnO and nano-SiO2 was 14.8 and 16.6 times higher than that of high-plasticity clay soil, respectively. Finally, the results obtained from scanning electron microscopy (SEM) analysis revealed that the nanospheres caused a dense and compact matrix to form in the soil, which led to the enhancement of the mechanical strength of the treated samples.http://dx.doi.org/10.1155/2019/4257530 |
| spellingShingle | Ali Ghorbani Hadi Hasanzadehshooiili Mostafa Mohammadi Fariborz Sianati Mahdi Salimi Lukasz Sadowski Jacek Szymanowski Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils Advances in Civil Engineering |
| title | Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils |
| title_full | Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils |
| title_fullStr | Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils |
| title_full_unstemmed | Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils |
| title_short | Effect of Selected Nanospheres on the Mechanical Strength of Lime-Stabilized High-Plasticity Clay Soils |
| title_sort | effect of selected nanospheres on the mechanical strength of lime stabilized high plasticity clay soils |
| url | http://dx.doi.org/10.1155/2019/4257530 |
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