Deterioration and Microstructural Characterization of Reinforced Concrete Beam Buried in Lagoon and Fresh Waters

Igba, U. T. and Akinyele, J. O. and Alayaki, F. M. and Kuye, Sidikat I. and Oyebisi, S.O (2021) Deterioration and Microstructural Characterization of Reinforced Concrete Beam Buried in Lagoon and Fresh Waters. Nigerian Journal of Technology, 40 (2). pp. 177-185. ISSN 0331-8443, Electronic ISSN: 2467-8821

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Abstract

The effect of the sulphate attack on reinforced concrete structures in Lagos lagoon environment has become a concern for stakeholders in the construction industry. This study investigated the flexural strength and microstructure of reinforced concrete beams for a period of 365 days. Thirty beams with dimension 150 mm £ 150 mm £ 600 mm were cast using grade 30 concrete with water cement ratio of 0.45 and cured for 28, 90 and 365 days, in both lagoon and fresh water. Flexural strength and microstructural test were carried out. The result showed that the flexural strength of concrete submerged in fresh and lagoon water were 24.6 and 20.3 N/mm2 respectively. The microstructure also confirmed the fact that specimens submerged in the lagoon had more defects and deterioration than the sample cured in fresh water at 365 days.

Item Type:	Article
Uncontrolled Keywords:	flexural strength, lagoon water, fresh water, concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery
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:	nwokealisi
Date Deposited:	10 Jan 2023 10:41
Last Modified:	10 Jan 2023 10:41
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/16500

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