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本文介绍了国内外远距离泵送混凝土施工现状,通过远距离泵送混凝土的理论计算,明确了远距离泵送混凝土的主要影响因素,从而确定C20远距离泵送混凝土的配制技术路线,用机制砂和山砂配制出了C20的混凝土坍落度大于20cm,扩展度大于45cm,经时损失小,在实际工程中泵送施工了650m的距离。
This paper introduces the current situation of construction of long-distance pumping concrete both at home and abroad. Through the theoretical calculation of long-distance pumping of concrete, the main influencing factors of long-distance pumping concrete are clarified, and the technical route of formulating C20 long-distance pumping concrete is determined. Sand and mountain sand prepared out of the concrete slump C20 greater than 20cm, expansion of more than 45cm, the loss over time, in the actual construction of the pump construction of a distance of 650m.