EFFECT OF CREEP OF EPOXY RESIN FLOOR COATINGS ON GROWTH OF BLISTER

Abstract

Tensile and compressive creep of epoxy resin floor coatings was first measured at four levels of stress at 5,20 and 35℃ for making clear the mechanism of blistering of epoxy resin coated floors, and the empirical equation of expressing creep behavior was obtained from the observed creep data. Then, the development of blisters of epoxy resin coatings applied on concrete substrate was experimentally measured at the same three temperatures. The height of the blisters was estimated by FEM calculation considering the creep behavior of the epoxy resin floor coatings. The calculated values are approximately accordance with the observed ones, and it is concluded that growth of the blisters is closely related to the creep of the epoxy resin coatings.