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粉煤灰在泵送混凝土中的应用

HARNESSING THE HUAIHE RIVER(2003)

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Abstract
泵送混凝土的显著特点是在泵压作用下,将混凝土拌和物通过管道输送到浇筑现场.理论与实践表明,泵送混凝土的可泵性较好,以前配制泵送混凝土一般通过增加水泥用量、提高坍落度、加大砂率、掺外加剂等方法予以特殊处理,但这样容易造成水泥水化热大,引起温差裂缝、混凝土离析而堵管等现象.
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