METHOD FOR FINELY DIVIDING AIR BUBBLE IN READY-MIXED CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a method for finely dividing an air bubble in a ready-mixed concrete in which an air bubble on the surface or inside of a ready-mixed concrete can be finely divided, or de-foamed, and a good appearance, homogeneous and high quality precast concrete product can be produced.;SOLUTION: Provided is a method for finely dividing air bubble in ready-mixed concrete for producing a precast concrete product in which an air bubble in a ready-mixed concrete is finely divided, and in which a fluctuating inertial force is given to a ready-mixed concrete, and depending on physical and/or chemical attributes of the ready-mixed concrete and/or physical and/or chemical attributes of the air bubble, the fluctuating inertial force is controlled by one or more conditions selected from the fluctuation range, the number of fluctuations per unit time, the repeatedly fluctuated time duration or fluctuation frequency, and the acceleration of the fluctuating inertial force.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2018,JPO&INPIT