Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites
Synergistic use of industrial and agricultural by-products can be solution of carbon emission from construction industry. The whole world is facing a crisis in finding ways to dispose of waste material. Hence, this study attempts to use rice husk and rice husk ash in geopolymers. Thus the study aims...
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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 |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423009195 |
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| author | Marvellous Mareya Abdulsalam Bahurudeen Jittin Varghese Blessen Skariah Thomas Nastassia Thandiwe Sithole |
| author_facet | Marvellous Mareya Abdulsalam Bahurudeen Jittin Varghese Blessen Skariah Thomas Nastassia Thandiwe Sithole |
| author_sort | Marvellous Mareya |
| collection | DOAJ |
| description | Synergistic use of industrial and agricultural by-products can be solution of carbon emission from construction industry. The whole world is facing a crisis in finding ways to dispose of waste material. Hence, this study attempts to use rice husk and rice husk ash in geopolymers. Thus the study aims to develop a rice husk/basic oxygen furnace slag based geopolymer and study the factors affecting the performance of the binder. The developed geopolymer specimens were characterized using mechanical testing, physical and chemical techniques. The expansive nature of the organic matter in rice husk resulted in the geopolymer expanding and cracking. For this reason, rice husk ash was used to replace basic oxygen furnace slag. The rice husk was calcined at 600 °C to produce rice husk ash. The amount of rice husk ash as a replacement for basic oxygen furnace slag geopolymer varied from 0% to 50%. The effect of NaOH concentration, solid/liquid ratio, Na2SiO3/NaOH ratio, and the curing temperature was also studied to investigate the optimum parameter. The unconfined compressive strength is used to determine the performance of the binder. The results indicated an uptrend in unconfined compressive strength when increasing the rice husk ash content from 5% to 10%, and the optimum was 10%. Specimen with 8 M NaOH concentration had the highest unconfined compressive strength of 6.285 MPa. Moreover, it was also found that curing at 80 °C is an optimum condition for curing. Efflorescence formation and alkali leaching increased with the increase in rice husk ash content. |
| first_indexed | 2024-03-13T04:09:23Z |
| format | Article |
| id | doaj.art-759d23c4a17844cdbfa5d3c3ee34baae |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:09:23Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-759d23c4a17844cdbfa5d3c3ee34baae2023-06-21T06:57:13ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012462646278Transformation of rice husk modified basic oxygen furnace slag into geopolymer compositesMarvellous Mareya0Abdulsalam Bahurudeen1Jittin Varghese2Blessen Skariah Thomas3Nastassia Thandiwe Sithole4Department of Chemical Engineering, University of Johannesburg, South AfricaDepartment of Civil Engineering, Birla Institute of Technology and Science, Hyderabad Campus, 500078, IndiaDepartment of Civil Engineering, Birla Institute of Technology and Science, Hyderabad Campus, 500078, IndiaCollege of Engineering, American University of Sharjah, 26666, United Arab EmiratesDepartment of Chemical Engineering, University of Johannesburg, South Africa; Corresponding author.Synergistic use of industrial and agricultural by-products can be solution of carbon emission from construction industry. The whole world is facing a crisis in finding ways to dispose of waste material. Hence, this study attempts to use rice husk and rice husk ash in geopolymers. Thus the study aims to develop a rice husk/basic oxygen furnace slag based geopolymer and study the factors affecting the performance of the binder. The developed geopolymer specimens were characterized using mechanical testing, physical and chemical techniques. The expansive nature of the organic matter in rice husk resulted in the geopolymer expanding and cracking. For this reason, rice husk ash was used to replace basic oxygen furnace slag. The rice husk was calcined at 600 °C to produce rice husk ash. The amount of rice husk ash as a replacement for basic oxygen furnace slag geopolymer varied from 0% to 50%. The effect of NaOH concentration, solid/liquid ratio, Na2SiO3/NaOH ratio, and the curing temperature was also studied to investigate the optimum parameter. The unconfined compressive strength is used to determine the performance of the binder. The results indicated an uptrend in unconfined compressive strength when increasing the rice husk ash content from 5% to 10%, and the optimum was 10%. Specimen with 8 M NaOH concentration had the highest unconfined compressive strength of 6.285 MPa. Moreover, it was also found that curing at 80 °C is an optimum condition for curing. Efflorescence formation and alkali leaching increased with the increase in rice husk ash content.http://www.sciencedirect.com/science/article/pii/S2238785423009195Basic oxygen furnace slagRice huskRice husk ashGeopolymerUnconfined compressive strength |
| spellingShingle | Marvellous Mareya Abdulsalam Bahurudeen Jittin Varghese Blessen Skariah Thomas Nastassia Thandiwe Sithole Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites Journal of Materials Research and Technology Basic oxygen furnace slag Rice husk Rice husk ash Geopolymer Unconfined compressive strength |
| title | Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| title_full | Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| title_fullStr | Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| title_full_unstemmed | Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| title_short | Transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| title_sort | transformation of rice husk modified basic oxygen furnace slag into geopolymer composites |
| topic | Basic oxygen furnace slag Rice husk Rice husk ash Geopolymer Unconfined compressive strength |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423009195 |
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