Product Data Sheet Safety Data Sheet Show all documents

Sika® Foam TBM-501 LS (TH)

FOAMING AGENT FOR TBM - EPBM TUNNELING

Sika® Foam TBM-501 LS (TH) is a liquid foaming agent based on biodegradable anionic surfactants and a high efficiency polymer.

  • Produces stable foam which can easily be injected in high to low permeability soils reducing the risk of front shield pressure loss.
  • It can be used both in acid and basic soils.
  • The high efficiency polymer allows keeping the shield clean from clays.
  • Its lubricating capacity minimizes friction between soil particles and reduces the head torque.
  • Easy to handle.
  • Eliminates dust in air drilling and reduces the wear of cutters.
  • Prevents clay from plugging.
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® Foam TBM-501 LS (TH) has been specifically formulated to produce stable foam which can be easily injected in acid and basic soils from low permeability to high permeability during tunnelling operations with earth pressure balance machines (EPBM).  

Advantages

  • Produces stable foam which can easily be injected in high to low permeability soils reducing the risk of front shield pressure loss.
  • It can be used both in acid and basic soils.
  • The high efficiency polymer allows keeping the shield clean from clays.
  • Its lubricating capacity minimizes friction between soil particles and reduces the head torque.
  • Easy to handle.
  • Eliminates dust in air drilling and reduces the wear of cutters.
  • Prevents clay from plugging.

Packaging

50 kg plastic drums

200 kg steel drum

1000 kg plastic tanks

Colour

Clear homogeneous liquid.

Product Details

Product Information

Composition

Biodegradable anionic surfactants and high efficiency polymer.

Shelf life

12 months from date of dispatch if stored in unopened and undamaged original sealed containers.

Storage conditions

Protect from moisture at temperatures between +5°C and +40°C.
Protect against direct sunlight.

Density

1.035 - 1.055 kg/L (@ 25°C)

Solubility

Completely soluble in water.

pH-Value

6.5 - 8.5
System information

Compatibility

Sika® Admixtures:

  • Compatible with all Sika® TBM tunnelling stabilizing polymers e.g. Sika® Foam TBM 900 Bio and Sika® Foam TBM 1000 Bio.
  • Other product compatibility information available on request.

Application

Application Information

Restrictions

If separation of liquid solution occur, mix product intensely before using.
Consumption

Recommended Dosage

1.5 – 3.0 % of Sika® Foam TBM-501 LS (TH).
Support by Sika technical service is recommended.

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