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随着钻孔桩工程施工规模的扩大,用传统的人工方法灌注混凝土已不能满足工程施工的需要,尤其是一些吊车不能进入的场地,单靠人力用小车运送混凝土效率低,劳动强度大,且难以保证工期。由于混凝土输送泵管道可以铺设到吊车或小推车不能到达的地方,并使混凝土在一定压力下充填灌注部位,因此,近年来一些施工单位开始使用混凝土输送泵进行混凝土灌
With the expansion of the construction scale of bored piles, it is no longer possible to fill concrete with traditional manual methods to meet the needs of construction. In particular, some cranes cannot enter the site. Manlifts are used to transport concrete with low efficiency and labor intensity. It is difficult to guarantee the duration. Because the concrete pump pipe can be laid in a place that can not be reached by a crane or a small cart, and the concrete is filled with a filling site under a certain pressure, in recent years, some construction units have begun to use a concrete transfer pump for concrete irrigation.