在静止状态的新拌混凝土中,固体颗粒相互接触而成为稳定的状态。当受到振动时,颗粒产生运动而相互脱离,失去抗剪切能力而开始流动,这就是混凝土的振动液化。液化混凝土的流动性质主要取决于塑性粘度ηP。屈服值 Sy 的影响很小。由于液化系由固体颗粒的相互运动而 In fresh concrete in a stationary state, solid particles contact each other and become stable. When subjected to vibrations, the particles move and disengage from one another and lose shear resistance and begin to flow. This is the vibrational liquefaction of the concrete. The flow properties of liquefied concrete mainly depend on the plastic viscosity ηP. The effect of the yield value Sy is small. Because liquefaction is caused by the mutual movement of solid particles