| 摘要 |
The maintenance dry plaster mixture contains 20 to 85 % by weight of silicate filler with 0.1 to 2 mm grain size and volume weight 230 to 400 kg/m3, 0.5 to 45 % by weight of cement having minimum compression strength 40MPa/28 days, 1 to 25 % by weight of limy hydrate, 1 to 20 % by weight of lightweight granulated filler with volume weight less than 100 kg/m3, 0.1 to 0.5 % by weight of modified methylcellulose, 1.5 to 12 % by weight of dispersing agent, 0.1 to 3 % by weight of porosity agent and eventually up to 2 % by weight of hydrophobization additive, up to 15 % by weight of pozzuolana additive and/or 1 to 7 % by weight of plastificator. |
