Concrete moldings with a high gloss, their production and use

摘要

A description is given of a concrete molding which is coated with cement-bound mineral coating composition (cement slurry) and with a transparent varnish, the transparent varnish comprising as binder an aqueous polymer dispersion and also at least one anionic emulsifier containing at least one phosphate and/or phosphonate group. The concrete molding is distinguished by high gloss and can be used in particular as rooftile.