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如何防止混凝土松顶

更新时间: 2020-09-16 00:00:00     

为了防止混凝土发生“松顶”现象,可采取下列措施:

混凝土配合比设计时,要求水灰比不要过大,以减少泌水现象,同时应使混凝土拌合物的保水性好。掺入加气剂或减水剂。混凝土浇筑至顶层时,进行二次振捣和二次抹面,并排除其水分。连续浇筑高度较大的混凝土结构时,随着灌筑高度的上升分层减水。采用真空脱水工艺。

关键词: 如何 防止 混凝土

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