"Efflorescences can occur in natural and built environments. On porous construction materials it may present a cosmetic problem only, but can sometimes indicate serious structural weakness."
Man, the last sentence sounds scary.作者: NewLynnHse 时间: 2013-6-6 22:39:39
superbullet 发表于 2013-6-6 22:31
"Efflorescences can occur in natural and built environments. On porous construction materials it m ...
i think is moisture bring up the salt and another minerals through cement. you can provide ventilation to the place ,such as by using a dehumidifier。作者: 节奏 时间: 2013-7-8 00:12:11