The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide
When olivine (Mg2SiO4) is activated with potassium hydroxide (KOH), it acquires the ability to improve the unconfined compressive strength of soil. This paper investigates the use of olivine for soil stabilisation through alkaline activation by focusing on the role of different alkali activated oliv...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Springer Verlag
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/63433/1/The%20effect%20of%20olivine%20content%20and%20curing%20time%20on%20the%20strength.pdf |
| _version_ | 1825932600911331328 |
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| author | Fasihnikoutalab, Mohammad Hamed Pourakbar, Shahram Ball, Richard J. Kim Huat, Bujang |
| author_facet | Fasihnikoutalab, Mohammad Hamed Pourakbar, Shahram Ball, Richard J. Kim Huat, Bujang |
| author_sort | Fasihnikoutalab, Mohammad Hamed |
| collection | UPM |
| description | When olivine (Mg2SiO4) is activated with potassium hydroxide (KOH), it acquires the ability to improve the unconfined compressive strength of soil. This paper investigates the use of olivine for soil stabilisation through alkaline activation by focusing on the role of different alkali activated olivine contents (5–20 wt%) in stabilising native soil at different curing durations. The strength results were supported by a detailed microstructural and compositional analysis including scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Use of olivine in the presence of KOH increased the shear strength of soil up to 7.4 MPa in 90 days as a result of the formation of brucite, quartz and mullite in the structure of treated soil. This achievement implies a tremendous effect of olivine on the strength behaviour of treated soil. These results provide essential information which is significant from an environmental perspective as it offers a low energy alternative to existing technologies, for soil stabilisation. |
| first_indexed | 2024-03-06T09:44:31Z |
| format | Article |
| id | upm.eprints-63433 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:44:31Z |
| publishDate | 2017 |
| publisher | Springer Verlag |
| record_format | dspace |
| spelling | upm.eprints-634332018-08-27T04:14:32Z http://psasir.upm.edu.my/id/eprint/63433/ The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide Fasihnikoutalab, Mohammad Hamed Pourakbar, Shahram Ball, Richard J. Kim Huat, Bujang When olivine (Mg2SiO4) is activated with potassium hydroxide (KOH), it acquires the ability to improve the unconfined compressive strength of soil. This paper investigates the use of olivine for soil stabilisation through alkaline activation by focusing on the role of different alkali activated olivine contents (5–20 wt%) in stabilising native soil at different curing durations. The strength results were supported by a detailed microstructural and compositional analysis including scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Use of olivine in the presence of KOH increased the shear strength of soil up to 7.4 MPa in 90 days as a result of the formation of brucite, quartz and mullite in the structure of treated soil. This achievement implies a tremendous effect of olivine on the strength behaviour of treated soil. These results provide essential information which is significant from an environmental perspective as it offers a low energy alternative to existing technologies, for soil stabilisation. Springer Verlag 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/63433/1/The%20effect%20of%20olivine%20content%20and%20curing%20time%20on%20the%20strength.pdf Fasihnikoutalab, Mohammad Hamed and Pourakbar, Shahram and Ball, Richard J. and Kim Huat, Bujang (2017) The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide. International Journal of Geosynthetics and Ground Engineering, 3 (12). pp. 1-10. ISSN 2199-9260; ESSN: 2199-9279 https://link.springer.com/article/10.1007/s40891-017-0089-3 10.1007/s40891-017-0089-3 |
| spellingShingle | Fasihnikoutalab, Mohammad Hamed Pourakbar, Shahram Ball, Richard J. Kim Huat, Bujang The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title | The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title_full | The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title_fullStr | The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title_full_unstemmed | The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title_short | The effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| title_sort | effect of olivine content and curing time on the strength of treated soil in presence of potassium hydroxide |
| url | http://psasir.upm.edu.my/id/eprint/63433/1/The%20effect%20of%20olivine%20content%20and%20curing%20time%20on%20the%20strength.pdf |
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