WO 2018/056124 A1

Additive for cement composition and cement composition

(22) 12.09.2017

(43) 29.03.2018

(57) The present invention is an additive for a cement composition, said additive containing a powdered cellulose, and addressing the problem of providing an additive for a cement composition that can prepare a cement composition in which additive cellulose can be uniformly dispersed in the cement matrix and thickening can be suppressed, said additive being capable of producing a cement structure having low shrinkage strain (that is, a large reinforcing effect) and a smooth and uniform texture.

(71) Nippon Paper Industries 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)

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