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Strength behaviour of coal bottom ash self-compacting concrete exposed to cyclic wetting-drying in seawater

Hamzah, Ahmad Farhan and Fadzil, Norzubaidah and Wan Ibrahim, Mohd Haziman and Jamaluddin, Norwati and Putra Jaya, Ramadhansyah and Arshad, Mohd Fadzil and Zainal Abidin, Norul Ernida and Dahalan, Nurol Huda (2017) Strength behaviour of coal bottom ash self-compacting concrete exposed to cyclic wetting-drying in seawater. Journal of Engineering and Applied Sciences, 12 (5). pp. 6922-6927. ISSN 1816949X

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Abstract

This study presents the strength behaviour of the self-compacting concrete which incorporated the coal bottom ash that was exposed to cyclic wetting and drying processes under the condition of seawater environment. The mixtures were produced by combining 0.40 water/powder ratio and coal bottom ash in varying percentages of 0, 10, 15, 20, 25 and 30%. The samples arising from each mixture were exposed to seawater environment with an average of 15 h of wetting process and 9 h of drying process per day. Consequently, the compressive strength behaviour of the concrete at the durations of 28, 60, 90 and 180 days under curing process were observed to understand the physical mechanisms that affected the concrete during the cyclic wetting and drying phases while exposed to harsh environments. The results of the cyclic wetting and drying processes in the laboratory indicated that there were significant strength reductions across all mixtures. It was found that that the strength of 10% coal bottom ash replacement sample is slightly higher than the control samples.

Item Type: Article
Uncontrolled Keywords: Compressive strength; coal bottom ash; wetting-drying; self-compacting concrete; seawater environment; physical mechanisms
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 11 Feb 2019 00:50
Last Modified: 11 Feb 2019 00:50
URI: http://eprints.uthm.edu.my/id/eprint/10553
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