(57) A compressive strength improving, water uptake reducing additive composition comprising: an alkyl silane or its hydrolysate or mixture thereof comprising a silicon resin comprising units of the formula (Ia) thereof along with an additive composition and an antifoam composition; wherein the composition is used before, or during the grinding process in the cement plant not only reduces the energy consumption during grinding but also eliminates any further addition of the hydrophobic additive material to render hydrophobicity along with the improved compressive strength of the constructed structure. Such hydrophobicity along with the improved compressive strength of the constructed structure is achieved even when the composition is used after the grinding process.
(71) Wacker Metroark Chemicals Pvt. Ltd., D H Road, Vill & P.O: Chandi, P.S: Bishnupur, 24 Parganas (South), West Bengal 743503 (IN)
(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)