Performance Enhancement of Self-Compacting Concrete in Saline Environment by Hydrophobic Surface Protection

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 superplasticizer. 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.

Publication DOI: https://doi.org/10.1139/cjce-2018-0546
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Engineering Systems and Supply Chain Management
Additional Information: © Copyright 2019 – Canadian Science Publishing
Publication ISSN: 0315-1468
Full Text Link:
Related URLs: https://www.nrc ... 46#.Xx_j3UVKiUl (Publisher URL)
PURE Output Type: Article
Published Date: 2019-01-17
Accepted Date: 2018-11-22
Authors: Mazen, Al-Kheetan
Rahman, Mujib (ORCID Profile 0000-0002-5177-4159)
N. Balakrishna, Muniswamappa
Chamberlain, Denis

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