Vacuum grouting is a commonly used process in bridge concrete structures, and grouting of pores is a very critical link. The traditional grouting process will cause corrosion and component cracking after long-term use, which poses great safety hazards.

Vacuum grouting is a new technology in the construction of post-tensioned prestressed concrete structures. It largely solves the problems left by the traditional grouting process. The use of vacuum grouting technology improves the safety and durability of post-tensioned prestressed concrete structures. Effective measures.

The main application of DVE vacuum pump in vacuum grouting is that at one end of the channel, the DVE vacuum pump is used to vacuum the channel to produce a vacuum of about -0.1Pa, and then the optimized special cement slurry is pumped from the other end of the channel with the grouting pump. Pour in until the entire tunnel is filled, and apply a positive pressure of ≤0.7Mpa to improve the fullness and compactness of the prestressed tunnel grouting.

Main technical advantages
1. In the vacuum state, the air and water in the pores and the bubbles mixed in the cement slurry are eliminated, reducing pores and bleeding.
2. During the grouting process, the channel has a good sealing performance, so that the pressure of the slurry and the filling of the entire channel are guaranteed.
3. The optimization of the process and the slurry eliminates the occurrence of cracks and ensures the fullness and strength of the grouting.
4. The vacuum grouting process is a continuous and rapid process, which shortens the grouting time.