WO 2019/129732 A1

Calcium sulfoaluminate cement composition with improved corrosion resistance

(22) 21.12.2018

(43) 04.07.2019

(57) The invention concerns a composition for the production of calcium sulfoaluminate (CSA) reinforced concrete, comprising a calcium sulfoaluminate cement and a passivating salt selected from a nitrite of an alkali or alkaline-earth metal, a nitrate of an alkali or alkaline-earth metal and mixtures thereof, wherein the molar concentration of the anion of the passivating salt is in the range from 15 to 500 mol per 1 cubic meter (m3) of concrete.

(71) Italcementi S.p.A., Via Stezzano, 87, 24126 Bergamo (IT)

(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)

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