Introduces the three methods of water measurement on concrete mixing stations, determination of water-content coefficient of sand and rock and revision of gradation ratio, and puts forward effective scheme to control the lump of concrete.

• 介绍混凝土拌合站水计量所采用的三种方法,砂石含水率的测定及配合比的修订,为混凝土坍落度的控制提供了有效解决方案。