JETCRETE
Jetcrete is an advanced technology of Jet grouting, it allows you to flexibly design the cost and diameter or compressive strength of the Jetting column in accordance with the soil and site conditions.
![picture of Jetcrete one of the jet grouting construction inside a building without demolishing or destroying the structure or building itself](images/img_jetgrout_jetcrete01.jpg)
Summary of the Techniques
Jetcrete creates a column of Jet grout, the drill stem of the Jetcrete monitor then advances to the required depth and the jets (high pressurized air and cement slurry) erode and mix with the in situ soil while withdrawing the rods.
Creating these geometries of grouted soil gives a fixed scope of mechanical strength and water sealing to the soil.
![One of the jet grout Jetcrete construction procedure](images/img_jetgrout_jetcrete02.jpg)
Jetcrete Features
Jetcrete has developed the following features compared with mechanical soil improvement:
- Creates a large jetting column using small equipment.
- Improves partially choosing the layer of soft ground.
- Improves cohesive soil, sand and gravel layers.
- Creates a jetting column with a large depth.
- Executable in existing buildings.
- Executable in factories which are in operation.
- Makes less vibration and noise
- Choose from a diameter of 0.5m to 8.5m.
- Allows you to set the unconfined compressive strength (200KN/㎡~10MN/㎡).
![One of the jet grout Jetcrete construction machine size small to big](images/img_jetgrout_jetcrete03.jpg)
Range of applications
Applications
Cut and cover method
Ground improvement during excavation
Preventing boiling and heaving, increasing bearing force of bottom board, precedent ground girder, etc.
![ground improvement during excavation such as base soil improvement by jet grouting preventing underwater pressure](images/img_jetgrout_jetcrete05.jpg)
Sealing the defects on earth retaining wall
![sealing the defects such as existing embedded pipes with earth retaining wall with jet grouting](images/img_jetgrout_jetcrete06.jpg)
![reinforcing earth retaining wall with beam and reinforcing the caisson type foundation with jet grouting](images/img_jetgrout_jetcrete07.jpg)
For shield tunneling
Existing structures
Case Study for Earthquake Reinforcement or Countermeasures for Liquefaction
Reinforcing Structures or Bridge Piers
![Reinforcing structures and bridge pier or bored cast-in-place piles with jet grouting for earthquake and other purposes](images/img_jetgrout_jetcrete12.jpg)
Earthquake Reinforcement for the High Standard Bank
![Reinforcement for the high standard bank with jet grouting for earthquake and other pueposes](images/img_jetgrout_jetcrete13.jpg)
Liquefaction Prevention for Revetment Structure
![Reinforcement for the revetment structure with jet grouting for liquifaction prevention](images/img_jetgrout_jetcrete14.jpg)