As far as the present situation is concerned, industrial pneumatic vibrators are also suitable for the prefabrication of large concrete components, such as highways, railways, dams, bridge girders, culverts, subway and tunnel concrete construction. According to the actual situation of domestic and foreign vibrators used in the prefabrication of large concrete components, it shows that pneumatic vibrators play a very important auxiliary role.

 

 

According to the technological characteristics of prestressing concrete T-beam prefabrication in China, the application of pneumatic vibrator in prestressing concrete T-beam prefabrication is discussed. Aerodynamic vibrator is a kind of equipment which produces vibration by means of exciting device and transmits vibration to commercial concrete through prefabricated formwork to make it compact. When the concrete vibrator works, the internal friction and cohesion between the particles in the concrete decreases sharply. The concrete is in the state of heavy liquid. The aggregates slide and rearrange each other. The voids between the aggregates are filled with mortar, and the bubbles are extruded, so as to achieve the compact effect.