Patent ID: 8002890
Filing Date: 2011-08-23
Classification: B01F,B28C,C04B

Abstract:
1. A method of preparing a mortar composition, comprising: mixing mortar materials comprising at least 25 to 45 parts by weight of a high-early-strength portland cement, 40 to 60 parts by weight of sand, 0.05 to 0.12 parts by weight of methoxy (polyethlyene glycol) methacrylate copolymer which is a polycarboxylic acid-based powdered water reducing agent, 10 to 25 parts by weight of water, and none or at least one member selected from the group consisting of: 0.05 to 1.0 parts by weight of a water retentive agent, 0.5 to 2.0 parts by weight of a carbon-based powder, 0.1 to 0.3 parts by weight of an anti-foaming agent and 0.2 to 1.0 parts by weight of a gypsum; and no organic adhesives.