Process for the waterproofing of porous construction materials

Abstract

A process for the waterproofing of porous construction materials, the process including the steps of mixing water and a composition C, the composition C comprising, in each case based on the total weight of the composition C, a) 2-15 wt.-% of at least one binder selected from natural hydraulic lime (NHL), formulated lime (FL), and hydraulic lime (HL), b) 1-20 wt.-% of at least one pozzolanic material, c) 40-80 wt.-% of at least one aggregate, d) 2-30 wt.-% of at least one synthetic polymer, and wherein the content of Portland cement in said composition C is <3 wt.-%, applying the mixture thus obtained to a porous construction material, and optionally hardening the applied mixture.

Dependencies are inferred from the claim text.