Vibrating Mixing and the Improvement of Concrete Performance

Velocity gradient and low efficiency zone exist in the common forced mixing. The linear velocity of mixing is low, and the mixing time is long. The concrete has poor micro uniformity. The interface bonded strength and the durability are low. Based on the deficiency of common forced mixing, we put forward vibrating mixing technology and have successfully developed a device. The device adopts the method of forced mixing and vibrating mixing combined, which makes the material particle own certain vibrating frequency and present in vibrating status not only to destroy the sticky connection of mixture, but also reduce friction in materials to promote materials from clusters into uniform distribution. Meanwhile, the device improves micro uniformity and interface connection strength of concrete, and air content of concrete can reach above 3%. The mixing time is shorter and the cement dosage is fewer under the condition of invariable concrete strength.