Improvement of the Adhesion between Epoxy-Based Surface Coating and Hydrophobic Impregnated Concrete

Abstract:

Surface protection by hydrophobic impregnation and surface coating are widely used for concrete bridges located at coastal area in Japan. This paper deals with the improvement of adhesion between surface coating and hydrophobic impregnated concrete by different types of silanes and by invastigating surface treatment methods. As a result, adhesion between hydrophobic impregnated concrete and epoxy-based surface coating were improved by applying abrasive paper, portable electric grinder, solvent or diluted hydrochloric acid treatment. Especially, using portable electric grinder gave a remarkable improvement to the adhesive property. Also, hybrid-surface protection system consisting of surface coating and hydrophobic impregnation was discussed to prevent blistering.

• Periodical: Advanced Materials Research (Volume 1129)
• Pages: 256-262
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1129.256
• Online since: November 2015
• Authors: Shinsuke Kumagai*, Hiroki Sakuraba, Atsushi Miyata, Iwao Sasaki, Itaru Nishizaki
• Keywords: Adhesion, Blister, Hydrophobic Impregnation, Re-Repair, Surface Coating, Surface Treatment, Wettability

References

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[3] JSCE, Recommendation for Concrete Repair and Surface Protection of Concrete Structures, Concrete Library 119, 2005 (in Japanese).

[4] M. Ando, T. Fujiwara, M. Yamamoto, T. Yamada, Technical Report of the Investigation Results for the Paint System on Concrete Structures in Coastal Area, Proceedings of the Concrete Structure Senarios, The Society of Materials Science, Japan, Vol. 5, (2005).

[5] S. Kumagai, H. Sakuraba, A. Miyata, I. Sasaki, I. Nishizaki, Deterioration of Repaired Concrete Structures by Patching and Surface Coating, Proceedings of the Concrete Structure Senarios, The Society of Materials Science, Japan, Vol. 14, (2014).