析霜是混凝土制品水化初期和砖墙完工不久后常见的现象［１，２］。析霜成分多数是硫酸钠和碳酸钙。对于普通混凝土，只要其表面早期析霜比较均匀，问题并不大［３］。但建筑物抹灰析霜使墙饰面鼓包、脱落，墙面发霉起霜，严重影响墙面美观。１　抹灰析霜的环境析霜多在一楼离 Defrosting is a common phenomenon in the initial stage of hydration of concrete products and the completion of brick walls [1, 2]. Most of the defrosting ingredients are sodium sulfate and calcium carbonate. For ordinary concrete, as long as its surface is relatively uniform early frostbite, the problem is not large [3]. However, the plastering and frosting of the buildings caused the wall coverings to bulge and fall off, and the walls had moldy blooms, which seriously affected the appearance of the walls. 1 Eliminating frost and defrosting environment on the first floor