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混凝土热胀冷缩这句话正确吗
更新时间: 2020-08-17 00:00:00  

混凝土凝结硬化过程,水泥水化要释放大量热量,导致混凝土温度升高,体积略微变大;大部分水泥水化反应结束,混凝土温度开始下降,体积将稍微变小。

一般在混凝土浇筑后8至12小时,间距4至6米切割缩缝,切割深度约为路面板厚度的三分之一。可诱导混凝土收缩裂缝沿切割缝产生,防止出现随机裂缝。

关键词: 混凝土 热胀冷缩 正确

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