抚顺市雷锋纪念馆工程由于工期紧,主体工程于１９９２年１月底完工后立即进入屋面找平层施工,工程量约５０００ｍ２。我们在学习混凝土负温无覆盖施工方法基础上,对屋面找平层在负温下抹灰后无覆盖养护作了试验。其方法是:在砂浆中掺入混凝土防冻剂,抹砂浆时一次压光,让其在负? Due to the tight schedule, the main project of the Leifeng Memorial Project in Fushun City entered the roof leveling construction immediately after the completion of the construction at the end of January 1992. The project volume is about 5000m2. On the basis of studying the construction method of negative temperature and no covering of concrete, we tested the roof screed without covering under the negative temperature after plastering. The method is: in the mortar mixed with concrete antifreeze, when the mortar is lighted at a time, let it be negative?