Products
SLURRY TBM
MAK DP
Dispersant
MAK DP
During shield tunneling in cohesive soils such as clay or silt, excavated material may adhere to the cutterhead or cause clogging inside the chamber and screw conveyor, leading to poor muck discharge and reduced tunneling speed. MAK DP is a slurry dispersant that works effectively even at low dosage by modifying the electrochemical properties of excavated soil, reducing the viscosity and cohesion between soil particles. When used together with the Wetting & Penetrating Agent MAK SF, the conditioning effect is further enhanced, helping maintain smooth muck discharge and stable tunneling performance.
Dispersion
•Repulsion caused by steric hindrance
•Repulsion caused by electrostatic charge
Wetting
•Air between particles is replaced by liquid as wettability improves
Product Features
-
1
For Slurry Shield Method
• Prevents adhesion of excavated soil • Reduces slurry viscosity and improves flowability • Enables smooth slurry discharge
-
2
For EPB Shield Method
• Prevents adhesion of excavated soil • Facilitates smooth muck discharge (acts as a fluidizing agent during pumping) • Mitigates slurry thickening caused by contamination (cement or seawater intrusion)
Package
25kg Plastic pail / 1ton IBC Tank
Dispersant Application by Ground Conditions
| Country | Ground Characteristics |
|---|---|
| Singapore | High water content marine clay formations |
| Taiwan | Highly plastic clay formations |
| Thailand | Soft alluvial soils and loose sedimentary layers |
| Philippines | Mixed ground with varying clay adhesiveness |
| Korea | Hard clay and mixed-face ground conditions |
