Due to the processing characteristics of pumping concrete and construction technique and other reasons, cracks often appear on pumping concrete construction works, which affect the impermeability and durability of the structure to a great extent. For example, sedimentation cracks deserve special and constant attention.%由于泵送混凝土本身的工艺特点及施工工艺等原因,泵送砼施工的工程往往会出现一些裂缝,其在很大程度上影响结构的抗渗和耐久性能。如沉陷裂缝的出现,就值得我们特别关注和持续关注。
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