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防水隔离层技术探讨......

作者:盈智防水 来源: 时间:2019-07-30 09:02:39 次数:

为什么要铺设防水隔离层?防水隔离层有什么作用?

屋面防水层的隔离层一般设置在防水层与上面的刚性保护层之间,他有两个作用。 

1、表面的刚性层(通常是40mm厚细石混凝土)会有热胀冷缩变形,如果防水层与刚性层粘结很好,刚性层变形时会牵动防水层一起变形,这样有可能对防水层产生直接拉裂或长期疲劳破坏,所以要在两个构造层间设置具有滑移功能的隔离层。


2、防水层上的其他构造层施工时,有可能刺破损坏防水层,适当的保护是必要的,隔离层同时可以起到保护作用。 

防水卷材上的隔离层用什么材料? 


隔离层以前采用纸筋灰或低标号砂浆,由于刚性层施工时,纸筋灰很容易进入混凝土中,所以不用了。低标号砂浆施工时的运输小车对防水层的损害,而且防滑移性能不理想,所以也少用了。现在一般采用干铺油毡一道,也有用厚质塑料薄膜等材料。 



铺设防水隔离层注意事项有哪些? 


1、ZAISHUINILEIZHAOPINGCENGSHANGPUSHELIQINGLEIFANGSHUIJUANCAI、FANGSHUITULIAOHUOYISHUINILEICAILIAOZUOWEIFANGSHUIGELICENGSHI,QIBIAOMIANYINGJIANGU、JIEJING、GANZAO,PUSHEQIAN,YINGTUSHUAJICENGCHULIJI。JICENGCHULIJIYINGCAIYONGYUJUANCAIXINGNENGPEITAODECAILIAOHUOCAIYONGTONGLEITULIAODEDIZIYOU。 


2、DANGCAIYONGCHANYOUFANGSHUIJIDESHUINILEIZHAOPINGCENGZUOWEIFANGSHUIGELICENGSHI,QICHANLIANGHEQIANGDUDENGJI(HUOPEIHEBI)YINGFUHESHEJIYAOQIU。 


3、PUSHEFANGSHUIGELICENGSHI,ZAIGUANDAOCHUANGUOLOUBANMIANSIZHOU,FANGSHUICAILIAOYINGXIANGSHANGPUTU,BINGCHAOGUOTAOGUANDESHANGKOU;ZAIKAOJINQIANGMIANCHU,YINGGAOYIMIANCENG200—300mmHUOANSHEJIYAOQIUDEGAODUPUTU。YINYANGJIAOHEGUANDAOCHUANGUOLOUBANMIANDEGENBUYINGZENGJIAPUTUFUJIAFANGSHUIGELICENG。 


4、XIAOBIANTIXINGZAIFANGSHUICAILIAOPUSHEHOU,XUJINXINGBISHUISHIYAN。XUSHUISHENDUYINGWEI20—30mm,ERSHISIXIAOSHINEIWUSHENLOUWEIHEGE,BINGZUOJILU。 


5、WEIYUJIANHEYOUFANGSHUIYAOQIUDEJIANZHUDIMIANBIXUSHEZHIFANGSHUIGELICENG。LOUCENGJIEGOUBIXUCAIYONGXIANJIAOHUNNINGTUHUOZHENGKUAIYUZHIHUNNINGTUBAN,HUNNINGTUQIANGDUDENGJIBUYINGXIAOYUC20;LOUBANSIZHOUCHUMENDONGWAI,YINGZUOHUNNINGTUFANBIAN,QIGAODUBUYINGXIAOYU120mm。SHIGONGSHIJIEGOUCENGBIAOGAOHEYULIUKONGDONGWEIZHIYINGZHUNQUE,YANJINLUANZAODONG。 


6、GELICENGYUQIXIAYICENGZHANJIELAOGU,BUDEYOUKONGGU;FANGSHUITUCENGYINGPINGZHENG、JUNYUN,WUTUOPI、QIQIAO、LIEFENG、GUPAODENGQUEXIAN。

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