WO 2017/182678 A1

Cements and cement mixtures having high mechanical properties at young ages

(22) 19.04.2016

(43) 26.10.2017

(57) The invention relates to Portland cements of the type and category CEM I 52,5 R according to the Spanish Standard UNE-EN 197-1 and which also have a grain-size distribution with a Blaine fineness greater than 6500 cm2/g, a content of tricalcium silicate, C3S, greater than 55 % by weight and a content of tricalcium aluminate, C3A, greater than 4 % and less than 25 % by weight, the sum of both being greater than 75 %, with a strength according to the Spanish Standard UNE 196-1 greater than 40 MPa at one day and greater than 65 MPa at 28 days. The invention also relates to mixtures of the cements with a common cement according to the Spanish Standard UNE-EN 197-1, which have high mechanical properties at young ages, and to the method for obtaining these mixtures and the use of same in the production of cement derivatives, such as concretes, mortars and slurries.

(71) Cement International Technologies, S.L., P° de la Castellana,135, Edificio Cuzco III, 28046 Madrid (ES)

(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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