某超高建筑C60高性能混凝土超高泵送参数

C60高性能混凝土的黏度与可泵性的矛盾历来是混凝土超高泵送施工的一大难题。以某超高层建筑物的混凝土泵送施工为例,首先选择适于超高层泵送要求的C60高性能混凝土配合比,并从理论计算和实际推算两方面对所需泵送设备的关键参数进行验算论证,确定选用三一重工生产的HBT90CH-2135D泵送设备,并最终采用了二泵二管一次泵送到顶的混凝土泵送施工方案,成功克服了C60高性能混凝土黏度与可泵性的矛盾,顺利将混凝土一次泵送至383 m高度。对超高层高性能混凝土泵送施工具有重要的参考价值和实际意义。

C60 HIGH PERFORMANCE CONCRETE PUMPING PARAMETERS FOR A SUPERHIGH BUILDING

The contradiction between C60 high-performance concrete’s viscosity and pumpability was always a major problem in high pumping concrete construction.Taking a high-rise building concrete pumping construction of a tall building for example,it was firstly selected the C60 high-performance concrete proportion of mixture suitable for high pumping,and also verified the critical parameters of the pumping equipment from the theoretical calculations and actual estimates,it was selected the HBT90CH-2135D pumping equipment of Sanyi Heavy Industry,eventually the concrete pumping scheme of two-pump and two-tube to the top layer was used,and it was successfully overcome the contradiction between C60 high-performance concrete’s viscosity and pumpability,thus pumping C60 high performance concrete to a height of 383 m smoothly,which had important reference and practical significance to high performance concrete pumping construction for superhigh buildings.