selbstnivellierende fußbodenestrichmischung

摘要

A self-levelling floor screed mix is used in the construction of flats, social housing and light industrial buildings. The aim of the invention is a high-quality self-levelling screed mix which can be pumped from the mixing place in front of the building into the individual rooms even of multi-storey tower blocks. The object which is to be achieved is to obtain this high-grade screed mix by selection of the anhydrite and its treatment and by the mixing of the individual components. The object is achieved when selectively obtained and pretreated natural anhydrite of a defined chemical composition is brought by a combination of activator salts in a grinding/mixing step to a defined screen line and is used together with concrete sand of a grain size from 0 to 2 mm. The screed can be laid without cracks and does not tend to sediment on the conveying travel.