Zementgebundener Untergrund mit einer auf einer Oberflächenseite aufgebrachten Beschichtung aus zementgebundenem Werkstoff und Verfahren zur Verlangsamung oder Verhinderung der Auslaugung und hydrolytischen Korrosion von mit Wasser in Kontakt stehendem zementgebundenen Untergrunden

摘要

A coating for cement-bonded substrates is made from cement-bonded material (I) and, with a layer thickness (d) in the hardened state, shows a porosity gradient between the coated base and the outer surface of the coating such that the porosity in the outer zone is less than that on the inside of the layer (d). An independent claim is also included for a method for retarding or preventing the leach-out and hydrolytic corrosion of cement-bonded substrates in contact with water, by applying a layer (d) of (I) with a water/cement ratio of 0.4-0.5 and then reducing the porosity of the outer zone of the layer to obtained a porosity gradient as above.