Process for hardening concrete building structures, in particular walls, pillars or the like made of crushed brick concrete and a hardening agent for this and also for producing filigreed cast stone elements with a two-phase mixture

摘要

The process for hardening concrete building structures made of crushed brick concrete consists in mixing cement of quality class PZ 45 or PZ 55 with the quantity of water necessary for hydration to form a cement paste which, before hardening, is mixed with an additive consisting of a polymeric thinner to which an acrylic resin dispersion has been added, the mixing taking place in such a manner that first a hardening agent with a blancmange-like consistency is obtained which converts to a creamy consistency.