Utilization of black liquor as concrete admixture and set retarder aid
The utilization of black liquor, produced by the pulp and paper industry in Egypt, as a workability aid and set retarder admixture has been investigated. This approach may help eliminate the environmentally polluting black liquor waste. It also provides a low cost by-product, which can be widely use...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2011-04-01
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| Series: | Journal of Advanced Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090123211000063 |
| _version_ | 1829471668717748224 |
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| author | Samar A. El-Mekkawi Ibrahim M. Ismail Mohammed M. El-Attar Alaa A. Fahmy Samia S. Mohammed |
| author_facet | Samar A. El-Mekkawi Ibrahim M. Ismail Mohammed M. El-Attar Alaa A. Fahmy Samia S. Mohammed |
| author_sort | Samar A. El-Mekkawi |
| collection | DOAJ |
| description | The utilization of black liquor, produced by the pulp and paper industry in Egypt, as a workability aid and set retarder admixture has been investigated. This approach may help eliminate the environmentally polluting black liquor waste. It also provides a low cost by-product, which can be widely used in the construction industry. The properties of black liquor and its performance on concrete at two different ratios of water to cement have been studied. The results revealed that black liquor from rice straw pulp increases concrete workability, improves compaction, and reduces honeycombing. Moreover, it retards the initial and final set time and enhances uniform compaction. The effect of incorporating small portions of silica fume has been investigated. The ageing effect of this material over a period of one year, to determine its safe storage period, has been studied. Finally, this admixture was found to comply with the relevant Egyptian standards. |
| first_indexed | 2024-12-14T02:00:36Z |
| format | Article |
| id | doaj.art-6167daf324da4736bf3ff7a533f4d1fc |
| institution | Directory Open Access Journal |
| issn | 2090-1232 2090-1224 |
| language | English |
| last_indexed | 2024-12-14T02:00:36Z |
| publishDate | 2011-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Advanced Research |
| spelling | doaj.art-6167daf324da4736bf3ff7a533f4d1fc2022-12-21T23:21:02ZengElsevierJournal of Advanced Research2090-12322090-12242011-04-012216316910.1016/j.jare.2011.01.005Utilization of black liquor as concrete admixture and set retarder aidSamar A. El-Mekkawi0Ibrahim M. Ismail1Mohammed M. El-Attar2Alaa A. Fahmy3Samia S. Mohammed4Chemical Engineering Department, Cairo University, Giza, EgyptChemical Engineering Department, Cairo University, Giza, EgyptMaterial Research Laboratory, Structural Engineering Department, Cairo University, Giza, EgyptChemical Engineering Department, Cairo University, Giza, EgyptChemical Engineering Department, Cairo University, Giza, EgyptThe utilization of black liquor, produced by the pulp and paper industry in Egypt, as a workability aid and set retarder admixture has been investigated. This approach may help eliminate the environmentally polluting black liquor waste. It also provides a low cost by-product, which can be widely used in the construction industry. The properties of black liquor and its performance on concrete at two different ratios of water to cement have been studied. The results revealed that black liquor from rice straw pulp increases concrete workability, improves compaction, and reduces honeycombing. Moreover, it retards the initial and final set time and enhances uniform compaction. The effect of incorporating small portions of silica fume has been investigated. The ageing effect of this material over a period of one year, to determine its safe storage period, has been studied. Finally, this admixture was found to comply with the relevant Egyptian standards.http://www.sciencedirect.com/science/article/pii/S2090123211000063Rice straw black liquorWorkabilityConcreteSet retarderAdmixture |
| spellingShingle | Samar A. El-Mekkawi Ibrahim M. Ismail Mohammed M. El-Attar Alaa A. Fahmy Samia S. Mohammed Utilization of black liquor as concrete admixture and set retarder aid Journal of Advanced Research Rice straw black liquor Workability Concrete Set retarder Admixture |
| title | Utilization of black liquor as concrete admixture and set retarder aid |
| title_full | Utilization of black liquor as concrete admixture and set retarder aid |
| title_fullStr | Utilization of black liquor as concrete admixture and set retarder aid |
| title_full_unstemmed | Utilization of black liquor as concrete admixture and set retarder aid |
| title_short | Utilization of black liquor as concrete admixture and set retarder aid |
| title_sort | utilization of black liquor as concrete admixture and set retarder aid |
| topic | Rice straw black liquor Workability Concrete Set retarder Admixture |
| url | http://www.sciencedirect.com/science/article/pii/S2090123211000063 |
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