Cement clinker and cement composition

(22) 18.03.2021

(43) 30.09.2021

(57) Provided is cement clinker and a cement composition with which it is possible to improve the strength development of mortar while suppressing the increase in environmental impact. A cement clinker wherein: the proportion of 3CaO∙SiO₂ calculated using the Bogue equation is 50.0-75.0 mass%, inclusive; the proportion of 2CaO∙SiO₂ calculated using the Bogue equation is 5.0-25.0 mass%, inclusive; MgO, Na₂O, and MnO are included; and equation (1) is satisfied. MgO_C₃Sx(-0.6)+Na₂O_C₃Sx(15.3)+MgO_C₂Sx(-6.9)+Na₂O_C₂Sx(5.2)+MnO_C₂Sx(145.7) > 5.700...(1)

(71) Sumitomo Osaka Cement Co., Ltd., Tokyo (JP)

(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)