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.