A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Blistering of reactive resin coatings on concrete: Causes and prevention
Epoxy resins have already been used for impregnation and coating of concrete parts since more than 40 years. The phenomenon of blistering of these coatings has been reported for the first time about 35 years ago: Some weeks or months after application usually liquid filled blisters occur within or under the coating. In recent research projects the mechanisms of blistering were mainly described as osmotic transport processes in the contact zone between concrete and base coat. In an ongoing research project at the Institute of Building Materials Research of Aachen University, ibac funded by the German Research foundation DFG it could be shown that osmotic processes seem to be not involved in the effect of blistering. Rather local flaws and areas of disturbed crosslinking cause a weaker bond between the cementitious substrate and the epoxy coating. Furthermore a capillary pressure inside the cementitious pore structure may lead to formation of the liquid filled blisters.
Blistering of reactive resin coatings on concrete: Causes and prevention
Epoxy resins have already been used for impregnation and coating of concrete parts since more than 40 years. The phenomenon of blistering of these coatings has been reported for the first time about 35 years ago: Some weeks or months after application usually liquid filled blisters occur within or under the coating. In recent research projects the mechanisms of blistering were mainly described as osmotic transport processes in the contact zone between concrete and base coat. In an ongoing research project at the Institute of Building Materials Research of Aachen University, ibac funded by the German Research foundation DFG it could be shown that osmotic processes seem to be not involved in the effect of blistering. Rather local flaws and areas of disturbed crosslinking cause a weaker bond between the cementitious substrate and the epoxy coating. Furthermore a capillary pressure inside the cementitious pore structure may lead to formation of the liquid filled blisters.
Blistering of reactive resin coatings on concrete: Causes and prevention
Wolff, Lars (author) / Raupach, Michael (author) / Hailu, Kidist (author)
2007
17 Seiten, 14 Bilder, 2 Tabellen, 13 Quellen
Conference paper
English
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