In this study, first, we measured separation-resistance of epoxy resin floor coatings applied to substrate mortar samples, in case of being loaded by a running caster. And we also measured strength properties of substrate mortar samples by three kinds of strength tests, that is, a test for compressive strength, a pull- off test, and a test for bonding strength of finishes with scrape. Secondly, we discussed the relations between the three kinds of strengths of substrate mortar samples and the separation-resistance of floor coatings.
