Meisterprüfung Maler Und Anstreicher Practice Questions - Meisterprüfung Maler Und Anstreicher (Austria) Exam

The sinter skin consists of fine cement paste and release agents with low cohesive tensile strength and low porosity; it must be mechanically removed by diamond grinding or sweep blasting. The sinter skin contains acidic gypsum salts that react with dispersion binders; it must be neutralized by washing with concentrated hydrochloric acid. The sinter skin prevents the evaporation of core moisture; it must be sealed immediately with a vapor-tight 2K epoxy primer. The sinter skin increases surface porosity excessively; it must be consolidated by applying a high-solids penetrating primer.