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Title: Performance Enhancement of Self-Compacting Concrete in Saline Environment by Hydrophobic Surface Protection
Authors: Al-Kheetan, M
Rahman, M
Chamberlain, D
Keywords: Self-compacting concrete;Protection;Impregnation;Moisture content;Sorption
Issue Date: 17-Jan-2019
Publisher: NRC Research Press
Citation: Canadian Journal of Civil Engineering
Abstract: The purpose of this research is to enhance the performance of Self-compacting Concrete (SCC) to make it a more sustainable alternative to traditional concrete. SCC serves the purpose in harsh environments, therefore, requires protection against de-icing agents and harmful saline environments. This paper reports the results from a laboratory study evaluating the efficacy of two impregnants; pure-silane and water-based silane. Both materials were applied on dry and wet SCC specimens manufactured with high and medium doses of superplasticiser. When treatment is applied on dry samples, a significant reduction in chloride penetration was noticed. However, the impregnants were less effective when applied on specimens subjected to intermediate and long-term exposure to water. In dry conditions, pure-silane performed better than the water-based silane, although they had a similar performance when applied on wet specimens. In addition, increasing the internal moisture content has shown an adverse effect on the efficacy of both materials.
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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