Sustainable geopolymerization approach to stabilize sabkha soil
Sabkha soils, which predominately exist in arid/semi-arid climate zones worldwide, have raised considerable concerns because of their high compressibility and low bearing capacity. This study aimed to assess the feasibility of stabilizing saline sabkha soil through geopolymer treatment using environ...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423011134 |
| _version_ | 1797798719111823360 |
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| author | Wagdi Hamid Ahmed Alnuaim |
| author_facet | Wagdi Hamid Ahmed Alnuaim |
| author_sort | Wagdi Hamid |
| collection | DOAJ |
| description | Sabkha soils, which predominately exist in arid/semi-arid climate zones worldwide, have raised considerable concerns because of their high compressibility and low bearing capacity. This study aimed to assess the feasibility of stabilizing saline sabkha soil through geopolymer treatment using environment-friendly materials. Untreated and treated specimens were characterized using standard proctor compaction, direct shear, and unconfined compressive strength (UCS) tests, field-emission scanning electron microscopy/energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The effects of alkaline activator molarity, fly ash concentration, and curing period were investigated. ANOVA and response surface method were utilized to assess the influence of the investigated variables on the produced UCS data set. Results revealed that the enhanced UCS of the geopolymer-treated specimens was highly influenced by the molarity of NaOH. In addition, the alkaline activation of sabkha soil incorporating fly ash had higher UCS and shear strength than the untreated and Ordinary Portland cement (OPC) treated specimens. |
| first_indexed | 2024-03-13T04:08:04Z |
| format | Article |
| id | doaj.art-208275a0f9dc4fb78bdd65a774a437a6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:04Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-208275a0f9dc4fb78bdd65a774a437a62023-06-21T06:57:55ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012490309044Sustainable geopolymerization approach to stabilize sabkha soilWagdi Hamid0Ahmed Alnuaim1Department of Civil Engineering, College of Engineering, King Saud University, P.O.Box 800, Riyadh 11421, Saudi ArabiaCorresponding author.; Department of Civil Engineering, College of Engineering, King Saud University, P.O.Box 800, Riyadh 11421, Saudi ArabiaSabkha soils, which predominately exist in arid/semi-arid climate zones worldwide, have raised considerable concerns because of their high compressibility and low bearing capacity. This study aimed to assess the feasibility of stabilizing saline sabkha soil through geopolymer treatment using environment-friendly materials. Untreated and treated specimens were characterized using standard proctor compaction, direct shear, and unconfined compressive strength (UCS) tests, field-emission scanning electron microscopy/energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The effects of alkaline activator molarity, fly ash concentration, and curing period were investigated. ANOVA and response surface method were utilized to assess the influence of the investigated variables on the produced UCS data set. Results revealed that the enhanced UCS of the geopolymer-treated specimens was highly influenced by the molarity of NaOH. In addition, the alkaline activation of sabkha soil incorporating fly ash had higher UCS and shear strength than the untreated and Ordinary Portland cement (OPC) treated specimens.http://www.sciencedirect.com/science/article/pii/S2238785423011134Alkali-activated materialSabkha soilResponse surface methodFly ashSoil stabilizationSustainability |
| spellingShingle | Wagdi Hamid Ahmed Alnuaim Sustainable geopolymerization approach to stabilize sabkha soil Journal of Materials Research and Technology Alkali-activated material Sabkha soil Response surface method Fly ash Soil stabilization Sustainability |
| title | Sustainable geopolymerization approach to stabilize sabkha soil |
| title_full | Sustainable geopolymerization approach to stabilize sabkha soil |
| title_fullStr | Sustainable geopolymerization approach to stabilize sabkha soil |
| title_full_unstemmed | Sustainable geopolymerization approach to stabilize sabkha soil |
| title_short | Sustainable geopolymerization approach to stabilize sabkha soil |
| title_sort | sustainable geopolymerization approach to stabilize sabkha soil |
| topic | Alkali-activated material Sabkha soil Response surface method Fly ash Soil stabilization Sustainability |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423011134 |
| work_keys_str_mv | AT wagdihamid sustainablegeopolymerizationapproachtostabilizesabkhasoil AT ahmedalnuaim sustainablegeopolymerizationapproachtostabilizesabkhasoil |