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现代化的城市建设具有高、大、深、重和结构复杂等特点,原来的手工拌制或小型分散机拌混凝土的施工方式已与此不相适应,因而出现了集中搅拌站,专供商品混凝土,与此相辅,产生了泵送混凝土与混凝土泵送技术。前者系指可供泵送的混凝土配制,后者则指如何将拌制好的混凝土顺利输送。本章拟分上、下两集介绍。一、可泵性顾名思义,泵送混凝土即是用混凝土泵作为输送工具,在泵的压力推动下沿泵管进行一定距离的水平或垂
Modern urban construction has features such as high, large, deep, heavy, and complex structures. The original construction method of hand-mixed or small-scale dispersive machine-mixed concrete has not been adapted to this, and thus a centralized mixing plant has emerged and is dedicated to commercial concrete. This, complementing it, produced pumping concrete and concrete pumping technology. The former refers to the concrete that can be pumped, and the latter refers to how the well-mixed concrete can be smoothly conveyed. This chapter is divided into two sets of introduction. First, the pumpability As the name suggests, pumping concrete is the use of concrete pumps as a delivery tool, under the pressure of the pump to promote a certain distance along the pump tube horizontal or vertical