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安装塑料防水板需要注意哪些方面？

安装塑料防水板需要注意哪些方面？

浏览：26次 | 提问时间： 07-30 09:45

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4个答案

Superman♂ 07-30 09:46

施工要求：

一、施工前环境要求。

地面干燥（水分含量4.5%以下），可专用仪器测试。

地面平整（2米±3mm以内），如地面未达到平整要求，可使用专用自流平水泥整平。

地面无裂缝（如有必须填补平整，较大裂缝须用钢片填补并用树脂修补平）。

地面无油漆、油污。地面上的涂料、油脂等污染，必须*除或用铝箔覆盖，否则会导致脱胶、自流平破裂。

室内温度需保持15-18℃，低于5℃或者高于40℃禁止施工；室内相对空气湿度50%-55%为宜。

地面强度大于或等于C20（20MPA）。

二、施工前准备。

施工前48小时应将产品平铺打开包装，连同辅料放置施工现场48小时以上，防止施工后胀缩。

三、施工方法。

先将专用防水粘合剂涂抹在地面上，注意用量（请严格按照脱水使用方法施工），待粘合剂发按黏性时将产品铺实在地面，注意产品花纹的拼接方向。

铺设完毕后使用70KG压辊对施工处进行开槽和焊接。

1、粘合剂固化后使用开槽机在连接处挖出产品厚度1/2、1/3的焊槽。

2、使用焊*和焊条对焊槽进行密封焊接。

3、待焊条冷却后用焊条铲*将焊条铲平。

我头上有皇冠 07-30 09:54

安装塑料防水板需要注意方面如下：
1、铺设塑料防水板前应先铺缓冲层，缓冲层应用暗钉圈固定在基面上；缓冲层搭接宽度不应小于50mm；铺设塑料防水板时，应边铺边用压焊机将塑料防水板与暗钉圈焊接；
2、两幅塑料防水板的搭接宽度不应小于100mm，下部塑料防水板应压住上部塑料防水板。接缝焊接时，塑料防水板的搭接层数不得超过3层；
3、塑料防水板的搭接缝应采用双焊缝，每条焊缝的有效宽度不应小于10mm；
4、塑料防水板铺设时宜设置分区预埋注浆系统；
5、分段设置塑料防水板防水层时，两端应采取封闭措施。

只会安静 07-30 10:02

应该注意：
(1)在铺设过程中，两块防水板搭接处应预留不少于20cm的搭接余量，防水板的焊缝宽度为10  cm-20  c7r。
  (2)在铺设防水板时，应使防水板保持一定的松弛度，松弛度以手掌将防水板贴在岩面上没有紧绷感为准;在环向铺设时，应注意防水板的纵向与隧道的纵向垂直。
  (3)铺设防水布时，用专用的塑料垫片，并根据基面的不同情况尽量选在基面的四处采用钢钉、螺丝钉及塑料胀管将防水板固定在基面上。
  (4)焊缝尽可能一次完成，尽量减少间断和停机次数，避免不必要的修补，如有间断或停机应及。
  (5)在铺设防水板时，应预留下一段1  m-2  m的搭接余量。
  (6)防水板的纵向焊缝与描向焊缝重合时，首先将焊好的焊缝边缘部位剪平约100  cm，再进行风焊*将两条焊缝的重合部分焊接密实。
  (7)在进行焊缝前，先将热合焊接机进行预热，并设定好温度和爬行进度，温度一般设定在3。(+位当指示灯由绿变红时即可*作，焊接过程中要根据缝的热熔·清况随时调整温度或速度控制旋扭。

泪落旧城轻纱坠≈ 07-30 10:10

1．为实现结构设计构想，防水板下应采取设置软垫层的相应的结构构造措施，确保防水板不承担或承担最少量的地基反力，软垫层应具有以下两方面的特点：
1）软垫层应具有一定的承载能力，至少应能承担防水板混凝土浇注时的重量及其施工荷载，并确保
在混凝土达到设计强度前不致产生过大的压缩变形。
2）软垫层应具有一定的变形能力，避免防水板承担过大的地基反力，以保证防水板的受力状况和设
计相符。
2．工程设计中软垫层的做法大致如下：
1）防水板下设置焦渣垫层
在防水板下设置焦渣垫层，利用焦渣垫层所具有的承载力承担防水板及其施工荷载重量，并确保在
防水板施工期间不致发生过大的压缩变形，同时，在底板混凝土达到设计强度后，具有恰当的可压缩性。受焦渣材料供应及其价格因素的影响，焦渣垫层的应用正在逐步减少。
2）防水板下设置聚*板
近年来随着*柱基加防水板基础应用的普及，聚*板的应用也相当广泛，由于其来源稳定，施工
方便快捷且价格低廉，在工程应用中获得比较满意的技术经济效果。聚*板应具有一定的强度和弹性模量，以能承担基础底板的自重及施工荷载。

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