| 摘要 |
PURPOSE:To provide a cement mortar compsn. high in adhesion strength and having excellent water retentivity, workability and slipage resistance of a tile. CONSTITUTION:The cement mortar compsn. consists of 100 pts.wt. cement, 0.1-1.0 pts.wt. cellulose ether whose viscosity is 100-100,000cp of 2% aq. soln. at 20 deg.C, and 0.05-0.30 pts.wt. dextrin which delays starting time and finishing time by the extent of not less than 300min of setting of a saccharose and/or a normal portland cement having not larger than 355mum each particle diameter. |
