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Incorporation of Silica Fume and Metakaolin on Self Compacting Concrete

Ofuyatan, Olatokunbo M. and Olowofoyeku, Adeoye M. and Edeki, S.O. and Oluwafemi, John and Ajao, A. and David, O. (2019) Incorporation of Silica Fume and Metakaolin on Self Compacting Concrete. In: International Conference on Engineering for Sustainable World, 2019, Online.

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This study carried out an experimental design investigating the reaction of mineral admixtures on fresh and hardened properties of sustainable self compacting concrete (SCC). Silica fume (SF) and metakaolin (MK) were partially replaced by Portland cement at 5, 10, 15, 20 and 25% in varying proportions. The workability on the fresh concrete was examined and the strength performance. The water cement ratio of 0.38 was kept constant for all the samples tested. The compressive strength was measured at 7, 14, 21 and 28 curing days. The test results indicated that with the influence of 2% superplasticizer, the fresh concrete showed a satisfactory workability, decreased the segregation to resistance, ease of flowing ability with the addition of silica fume and metakaolin. It was concluded in this study that, the replacement with silica fume was found to have an early strength gain in the compressive strength of SCC samples and a decrease at varying dosages. However, 15% metakaolin was considered to be a suitable replacement with 49.08 MPa at 28days compared with the control mix..

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Self-compacting concrete, metakaolin, silica fume, workability, compressive strength test
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Divisions: Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 30 Jun 2020 12:12
Last Modified: 30 Jun 2020 12:12

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