Method for avoiding fungal growth in mineral construction materials

A process for inhibiting bacterial and fungal growth on cementitious compositions, the process comprising the step of adding to the cementitious composition an antimicrobial composition comprising

• a) 70-99 wt.-% of an inorganic carrier for biocidally active compounds, and
• b) 0.1-20 wt.-% of at least one bactericidally active compound, selected from the group consisting of (benzothiazol-2-ylthio)methyl thiocyanate, 1-(4-chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-ylmethyl)pentan-3-ol/Terbuconazole, 2,4-dichlorobenzyl alcohol, 2-chloroacetamide, 3-iodo-2-propylnyl butylcarbamate, Biphenyl-2-ol, Boric acid, 3a,4,7,7a-Tetrahydro-2-[trichloromethyl)thio]-1H-isoindole-1,3(2H)-dione), Carbendazim, Chlorothalonil,3,5-Dimethylperhydro-1,3,5-thiadiazin-2-thion, N-(Dichlorfluormethylthio)-N′,N′-dimethyl-N-phenylsulfamid), Dichloro-N-[(dimethylamino)sulphonyl]fluoro-N-(p-tolyl)methanesulphenamide/Tolylfluanid, Dichlorophen, anhydrous disodium tetraborate, Hexa-2,4-dienoic acid, N-(trichloromethylthio)phthalimide, Dinatrium-(N,N′-ethylenbis(dithiocarbamat), P-[(diiodomethyl)sulphonyl]toluene, Pyridine-2-thiol 1-oxide sodium salt, Pyrithione zinc, Sodium 2-biphenylate, Thiabendazole, Bis(dimethylthiocarbamoyl)disulfid and zinc bis(N,N-dimethyldithiocarbamat and
• c) 0.1-25 wt.-% of at least one fungicidally active compound, selected from the group consisting of 1,2-benzisothiazol-3(2H)-one, 2,2-dibromo-2-cyanoacetamide, 2-bromo-2-(bromomethyl)pentane-dinitrile, 2-methyl-2-H-isothiazol-3-one, Bis(trichloromethyl) sulphone, Bronopol, Chlorocresol, Potassium (E,E)-hexa-2,4-dienoate, Silver chloride, Sodium hydrogen 2,2′methylenebis[4-chlorophenolate], Sodium p-chloro-m-cresolate and 4-Chloro-3,5-dimethylphenol, in an amount so that the combined weight of the bactericidally active compound or compounds and of the fungicidally active compound or compounds is between 0.01 and 10 wt.-% of the cementitious composition.