TamSoil 281AC – Soil conditioning anti-clogging foam for TBMs

TamSoil 281AC is a soil conditioning foam with anti-clogging properties specifically developed to be used on a tunnel boring machine (TBM). It acts as a soil conditioner for various types of soil conditions, especially clayey soils showing tendencies to cohesion problems as well as adhesion to metal surfaces. TamSoil 281AC gives the excavated soil the necessary plastic properties and reduces significantly soil stickiness at the cutterhead, working chamber and screw conveyor. TamSoil 281AC also creates a homogeneous and compressible spoil in order to reduce the cutterhead torque and secure a constant earth pressure in the working chamber during the excavating process.

Key Benefits
  • Very efficient mixing with the excavated soil, reducing cutter head torque
  • Reduces clay cohesion and adhesion effects
  • Improves spoil rheology
Typical Applications
  • EPB tunnelling in clayey ground conditions
  • Soil conditioning
  • Change of rheological behaviour
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