Evaluation of fresh and hardened properties of blended silica fume self-compacting concrete (SCC)

Ofuyatan, Olatokunbo M. and Adeniyi, Adewale George and Ighalo, Joshua (2021) Evaluation of fresh and hardened properties of blended silica fume self-compacting concrete (SCC). Research on Engineering Structures and Materials, 7 (2). pp. 211-223.

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Abstract

Recent technologies now investigate the use of materials that can serve as partial cement replacement and also impact on self-compacting ability in concrete mixtures. In this study, fresh and hardened properties of selfcompacting concrete containing silica fumes as partial replacement for cement were evaluated. Cement was replaced by silica fume in the extent of 15%, 25% and 35% by volume alongside the control mix (0%). The flow test, V-funnel test and L-box test were conducted on the fresh concrete. The compressive strength, flexural strength, water absorption property and microstructural properties of the hardened concrete were determined. Utilization of silica fume as partial cement replacement improved the fresh state properties of the concrete in the domain of the flow-ability. Higher partial replacement led to lesser compressive and flexural strength due to weak interfacial transition zone, the porosity of the mortar during adhesion to the fine and coarse aggregates. Rapid water absorption was observed after the first day of the concrete preparation which gradually tailed off with time.

Item Type:	Article
Uncontrolled Keywords:	Self Compacting Concrete; Silica Fume; Cement; Concrete; Partial Replacement
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Patricia Nwokealisi
Date Deposited:	26 Aug 2024 14:37
Last Modified:	26 Aug 2024 14:37
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/18397

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