冷冻抹灰是在砂浆中掺入一定量的抗冻剂后在负温下操作,经反复冻融后仍能保证质量。这种方法对中级和普通抹灰,在环境温度不低于-5℃时均可采用。左家庄供热厂是北京市重点工程之一,工期紧,大量抹灰工程要在冬季进行。我们在供热厂热网泵房水处理一楼和输煤沟两项工程中作冷冻抹灰试点。经两年使用证明,质量较好。一、施工准备热网泵房水处理一楼是在砖墙和混凝土 The freezing plaster is operated at a negative temperature after incorporating a certain amount of antifreeze in the mortar, and the quality can still be guaranteed after repeated freezing and thawing. This method can be used for medium and ordinary plasters when the ambient temperature is not lower than -5°C. The Zuojiazhuang Heating Plant is one of the key projects in Beijing. The construction period is tight, and a large number of plastering works will be carried out in winter. We conducted a pilot project for cold plastering on the first floor of the heating water pumping room water treatment plant and the coal mining trenches. After two years of use, the quality is better. First, the construction preparation heat network pump room water treatment first floor is in the brick wall and the concrete