混凝土振动器通常利用旋转的偏心块产生简谐振动,在数学分析上被描述为正弦波。一、振动参数粒状材料的振实,实质上就是使这些颗粒产生运动,从而消除其内摩阻力。L′Hermite等曾指出,新拌混凝土在振动过程中的内摩阻力为0.01公斤/厘米~2,在静止时约为0.2公斤/厘米~2。振实新拌混凝土的必要条件为:(1)对于正常稠度的混凝土应有最低限度的加速度;(2)对于很干硬的混凝土应有最低限度的动压力;(3)对于任何给定的混合物均应有最低限度的振幅;(4)对于各种 Concrete vibrators typically use a rotating eccentric mass to generate harmonic vibrations, mathematically described as sine waves. First, the vibration parameters of the granular material, in essence, is to make these particles produce movement, thereby eliminating its internal friction resistance. L’Hermite et al. have pointed out that the internal friction resistance of fresh concrete in the vibration process is 0.01 kg/cm 2 and is about 0.2 kg/cm 2 at rest. The necessary conditions for tapping fresh concrete are: (1) Minimum acceleration for concrete with a normal consistency; (2) Minimum dynamic pressure for very hard and dry concrete; (3) For any given Mixtures should have minimal amplitude; (4) for various