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高聚物改性沥青卷材屋面防水层施工工艺标准


高聚物改性沥青卷材屋面防水层施工工艺标准

1       范围

  本工艺标准适用于工业与民用建筑工程屋面采用高聚物改性沥青卷材热熔法施工防水层的工程。

施工准备

  2.1 材料及要求:

  211  高聚物改性沥青防水卷材:常用的有APP卷材、SBS卷材、PEE卷材,厚度不小于4mm。其外观质量和物理性能应符合下两表的要求。

高聚物改性沥青防水卷材外观质量

项    目

质 量 要 求

孔洞、缺边、裂口

不允许

边缘不整齐

不超过10mm。

胎体露白、未浸透

不允许

撒布材料粒度、颜色

均匀

每卷卷材的接头

不超过1处,较短的一段不应小于是1000mm,接头处应加长150 mm

 

高聚物改性沥青防水卷材物理性能

项   目

性 能 要 求

聚酯毡胎体

玻纤胎体

聚乙烯胎体

拉力(N/50mm)

≥450

纵向≥350

横向≥250

≥100

延 伸 率(%)

最大拉力时,≥30

断裂时,≥200

耐 热 度(℃,2h)

SBS卷材90,APP卷材110,

无滑动、流淌、滴落

PEE卷材90,无流淌、起泡

低温柔度(℃)

SBS卷材-18,APP卷材-5,PEE卷材-10。

3mm厚r=15mm;4mm厚r=25;3s弯180º,无裂纹

不透

水性

压力(Mpa)

0.3

≥0.2

≥0.3

保持时间(min)

≥30

  注:SBS——弹性体改性沥青防水卷材;APP——塑性体改性沥青防水卷材;

       PEE——改性沥青聚乙烯胎防水卷材;

  212  配套材料:

  1  氯丁橡胶沥青胶粘剂:由氯丁橡胶加入沥青及溶剂等配制而成,为黑色液体。或采用与铺贴的卷材材性相容的基层处理剂。

  2  橡胶沥青嵌缝膏:即密封膏,用于细部嵌固边缘。

 

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发布时间:2015-3-23 9:09:00  点击数:4955  

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