Dry cement mixture

(22) 23.06.2015

(43) 21.01.2016

(57) A dry cement mixture comprises Portland cement and an ultra-fine component consisting of at least one ultra-fine additive, said ultra-fine component being a hydraulic hinder, wherein Portland cement is present in an amount of at least 70 wt% of the mixture and the ultra-fine component is present in an amount of at least 5 wt% of the mixture, wherein the ultra-fine component has a particle size distribution characterized by a particle diameter D₁₀ of between 0.5 μm and 2 μm and a particle diameter D₉₀ of between 2 μm and 8 μm.

(71) Holcim Technology Ltd, Zürcherstrasse 156, CH-8645 Rapperswil-Jona (CH)

(84) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)