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 加气混凝土砌块墙面抹灰空鼓和裂缝的主要原因


  加气混凝土及各类轻质砌块(如硅酸盐发泡保温板)是各类建筑节能围护结构的重要构件,但因为这类产品表面疏松多孔,存在表面粘结力差及容易渗水等问题。大量实际工程实践证明需要针对该类产品专门开发出适当的防水抗裂砂浆。

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  1.4SHEJIGOUZAOWENTI

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  (3)MOHUICENGYUJICENG、MOHUICENGYUMOHUICENGCAILIAODEWULILIXUEXINGNENGYINGJIEJINHUOHUANMANGUODU,YIJIANSHAOWEN、SHIDUBIANXINGCHANSHENGDEYINGLICHA。

  2.4JIAQIANGMOHUIZHILIANGKONGZHI

  (1)QIANGMIANQINGSAO、QINGJIE,ZHONGDIANSHIQINGCHUFUHUIHEYULINZHUANGKELI,DUIQITAWUBAN、YOUZI、CHENTUDENGWUWUYEYINGQINGLIGANJING。

  (2)CHUQINGSAO、QINGJIEWAI,GUANJIANSHIKONGZHIQIANGMIANDEHANSHUILV。BIJIAOCHENGGONGDEZUOFASHIQIANGMIANSASHUI3BIAN,MEIBIANSASHUISHIJIANKONGZHIZAI20minZUOYOU,SADI3BIANSHUIHOU,DANGQIANGBIAOMIANCHENGSIGANFEIGANSHI,MASHANGSHUAILAMAO。JIANYANSASHUIZHILIANGDEBIAOZHUNSHI,YISHUISHENRUJIAQIHUNNINGTUQIKUAIBIAOMIAN8-10mmWEIZHUN。

  (3) 由于钢筋混凝土与加气混凝土砌体的温、湿度变形不一致,所以接缝处易出现裂缝。有效的预防方法是,在接缝处先抹一层专用粘结砂浆,然后贴玻纤网格布,宽度为100~200mm,铺贴在粘结砂浆面上,并用抹子边拍边抹,以出浆为准,最后进行砂浆抹灰。

 

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广东快乐十分

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