Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
Some Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effec...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/20/7148 |
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| author | Abeer W. Alshami Bashar H. Ismael Mohammed F. Aswad Ali Majdi Murtatha Alshijlawi Mustafa Mohammed Aljumaily Mohamed Khalid AlOmar Ibraheem A. Aidan Mohammed Majeed Hameed |
| author_facet | Abeer W. Alshami Bashar H. Ismael Mohammed F. Aswad Ali Majdi Murtatha Alshijlawi Mustafa Mohammed Aljumaily Mohamed Khalid AlOmar Ibraheem A. Aidan Mohammed Majeed Hameed |
| author_sort | Abeer W. Alshami |
| collection | DOAJ |
| description | Some Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effects of those additives on Atterberg limits, compaction characteristics and unconfined compressive strength, clayey soil samples have been transformed using micro and nano silica fume (by-product materials). In the current investigation, silica fume is used at four different percentages: 0, 2, 4, and 7%. The results show that the plasticity index of soil decreases with the addition of micro silica and increases with the addition of nano-silica. Increasing nano silica percentage improves the dry density of the compacted soil and reduces the optimum moisture content. An opposite behavior is observed with adding micro silica to compacted soil. Finally, 4% of silica fume is found to be the optimum dosage to improve the unconfined compressive strength of the treated soil with both additives. As a result, treating the weak clay soil with micro and/or nano-silica fume has the potential to be impactful. |
| first_indexed | 2024-03-09T19:54:32Z |
| format | Article |
| id | doaj.art-dce053c7a4b54b798fd0e702ecda0942 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T19:54:32Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-dce053c7a4b54b798fd0e702ecda09422023-11-24T01:03:03ZengMDPI AGMaterials1996-19442022-10-011520714810.3390/ma15207148Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano SilicaAbeer W. Alshami0Bashar H. Ismael1Mohammed F. Aswad2Ali Majdi3Murtatha Alshijlawi4Mustafa Mohammed Aljumaily5Mohamed Khalid AlOmar6Ibraheem A. Aidan7Mohammed Majeed Hameed8Civil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqCivil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqCivil Engineering Department, University of Technology, Baghdad 10066, IraqDepartment of Building and Construction Technics Engineering, Al Mustaqbal University College, Hilla 51001, IraqTechnical Institute of Anbar, Middle Technical University, Falluja 31002, IraqCivil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqCivil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqCivil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqCivil Engineering Department, Al-Maarif University College (AUC), Ramadi 31001, IraqSome Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effects of those additives on Atterberg limits, compaction characteristics and unconfined compressive strength, clayey soil samples have been transformed using micro and nano silica fume (by-product materials). In the current investigation, silica fume is used at four different percentages: 0, 2, 4, and 7%. The results show that the plasticity index of soil decreases with the addition of micro silica and increases with the addition of nano-silica. Increasing nano silica percentage improves the dry density of the compacted soil and reduces the optimum moisture content. An opposite behavior is observed with adding micro silica to compacted soil. Finally, 4% of silica fume is found to be the optimum dosage to improve the unconfined compressive strength of the treated soil with both additives. As a result, treating the weak clay soil with micro and/or nano-silica fume has the potential to be impactful.https://www.mdpi.com/1996-1944/15/20/7148clayey soilsoil improvementsilica fumenanomaterial |
| spellingShingle | Abeer W. Alshami Bashar H. Ismael Mohammed F. Aswad Ali Majdi Murtatha Alshijlawi Mustafa Mohammed Aljumaily Mohamed Khalid AlOmar Ibraheem A. Aidan Mohammed Majeed Hameed Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica Materials clayey soil soil improvement silica fume nanomaterial |
| title | Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica |
| title_full | Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica |
| title_fullStr | Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica |
| title_full_unstemmed | Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica |
| title_short | Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica |
| title_sort | compaction curves and strength of clayey soil modified with micro and nano silica |
| topic | clayey soil soil improvement silica fume nanomaterial |
| url | https://www.mdpi.com/1996-1944/15/20/7148 |
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