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双组份聚氨酯密封胶及聚硫密封膏变形缝施工技巧事项?
文章作者:admin 更新时间:2020-03-21

在混凝土变形缝采用双组分聚氨酯密封胶或者聚硫密封膏时,要使嵌填的密封胶具有良好的防水性能,除了嵌填的密封胶要密实外,缝两侧的基面处理也十分重要,否则密封材料与基面粘结不紧密,就起不到防水作用。另外,嵌缝密封胶下面的背衬材料不可忽视,否则会使密封材料三向受力,对聚氨酯密封胶的耐久性和防水性都有不利影响。

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