abstract |
The present invention relates to a cement mortar composition comprising 10-25% by weight of a cementitious binder, 1-5% by weight of an acrylic resin, 1-5% by weight of a siloxane resin, 25-45% by weight of a fine aggregate, 20-35% by weight of a coarse aggregate, 1 to 5% by weight of slag, 1 to 5% by weight of anhydrous gypsum, and 1 to 3% by weight of a compound represented by the following formula 1 or 2: [Chemical Formula 1] (2) |