A formulation comprising: at least two inorganic binders, wherein the first inorganic binder is selected from hydraulic binders, latent hydraulic binders, and mixtures thereof, and the second inorganic binder is selected from pozzolanic binders; at least two activators characterized in that the first activator is selected from powdered alkali metal silicates, wherein the alkali metal silicate is selected from compounds having the empirical formula m SiO 2 · n M 2 O, in which the alkali metal M represents Li, Na or K, or a mixture thereof, preferably Na and/or K, and the molar ratio m:n is from 1.0 to 4.0, preferably 1.0 to 3.8 and in particular 2.0 to 3.6, and the second activator is selected from alkali metal carbonates, alkali metal hydroxides, alkali metal aluminates, alkali metal sulfates, and mixtures thereof, wherein the alkali metal has the above meaning; and at least one polycondensation product comprising as monomer components: a) at least one aromatic compound of the formula Ar-O-CHR 1 -CHR 2 -(O-CHR 1 -CHR 2) m -R 3, wherein Ar is an aryl group, R 1 and R 2 each independently of one another are selected from H, methyl and ethyl, with preferably at least one of the groups R 1 and R 2 being H, m is an integer from 0 to 300, and R 3 is selected from OH, alkoxy, aryloxy, arylalkoxy, alkylaryloxy, phosphate, phosphonate, sulfate, sulfonate, carboxylate, and mixtures thereof; b) at least one aromatic carboxylic acid, which is salicylic acid; c) at least one aldehyde. at least two inorganic binders, wherein the first inorganic binder is selected from hydraulic binders, latent hydraulic binders, and mixtures thereof, and the second inorganic binder is selected from pozzolanic binders; at least two activators characterized in that the first activator is selected from powdered alkali metal silicates, wherein the alkali metal silicate is selected from compounds having the empirical formula m SiO 2 · n M 2 O, in which the alkali metal M represents Li, Na or K, or a mixture thereof, preferably Na and/or K, and the molar ratio m:n is from 1.0 to 4.0, preferably 1.0 to 3.8 and in particular 2.0 to 3.6, and the second activator is selected from alkali metal carbonates, alkali metal hydroxides, alkali metal aluminates, alkali metal sulfates, and mixtures thereof, wherein the alkali metal has the above meaning; and at least one polycondensation product comprising as monomer components: a) at least one aromatic compound of the formula Ar-O-CHR 1 -CHR 2 -(O-CHR 1 -CHR 2) m -R 3, wherein Ar is an aryl group, R 1 and R 2 each independently of one another are selected from H, methyl and ethyl, with preferably at least one of the groups R 1 and R 2 being H, m is an integer from 0 to 300, and R 3 is selected from OH, alkoxy, aryloxy, arylalkoxy, alkylaryloxy, phosphate, phosphonate, sulfate, sulfonate, carboxylate, and mixtures thereof; b) at least one aromatic carboxylic acid, which is salicylic acid; c) at least one aldehyde. a) at least one aromatic compound of the formula Ar-O-CHR 1 -CHR 2 -(O-CHR 1 -CHR 2) m -R 3, wherein Ar is an aryl group, R 1 and R 2 each independently of one another are selected from H, methyl and ethyl, with preferably at least one of the groups R 1 and R 2 being H, m is an integer from 0 to 300, and R 3 is selected from OH, alkoxy, aryloxy, arylalkoxy, alkylaryloxy, phosphate, phosphonate, sulfate, sulfonate, carboxylate, and mixtures thereof; Ar is an aryl group, R 1 and R 2 each independently of one another are selected from H, methyl and ethyl, with preferably at least one of the groups R 1 and R 2 being H, m is an integer from 0 to 300, and R 3 is selected from OH, alkoxy, aryloxy, arylalkoxy, alkylaryloxy, phosphate, phosphonate, sulfate, sulfonate, carboxylate, and mixtures thereof; b) at least one aromatic carboxylic acid, which is salicylic acid; c) at least one aldehyde.