Exterior, tilt-up concrete panel walls of a warehouse in the northeast United States were exhibiting widespread areas of blistered coating. Some blistered coating was so advanced that the underlying concrete substrate was exposed. These unacceptable conditions raised concerns regarding both aesthetics and durability and prompted a detailed investigation to determine the factors contributing to the coating failure.
In this article, chemist Leonard Phelps provides further details on the investigation techniques used, the field tests performed, the laboratory studies utilized, and the lessons learned from this case study.
This article was originally published in CoatingsPro Magazine.
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