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MAPEDRILL BIO

Natural, biodegradable, powder polymer for water-based drilling
muds and for mechanized tunnelling

Where to use
SLURRY SHIELDS
Mapedrill Bio is a high viscosity product; it can effectively replace bentonite, thus enabling the preparation of fluids with no solids content. Moreover, Mapedrill Bio has an inhibiting action on swelling clays and can avoid undesirable viscosity increases and fine solids dispersion in the fluid.
Fluids prepared with Mapedrill Bio have a high lubricating and cooling effect and can be used even in highly contaminated grounds. Mapedrill Bio has a lubricating effect for mechanized tunnelling, significantly reducing torque (especially in presence of fine particles) and enhancing TBM performance.

EPB
The use of Mapedrill Bio gives more stability to the foam produced with foaming agents, also inhibiting clay swelling.
Mapedrill Bio acts on the foam bubbles, gluing them together, improving foam density before, and during, the injection. Moreover, during mucking operations, Mapedrill Bio improves the stability of the spoil, inhibiting the settling of excavated solids.
Mapedrill Bio is fully compatible with our Foamer range.
Mapedrill Bio lubricates the EPBM, reducing torque, cutter wear and accelerating process.
Mapedrill Bio is suitable for use in the presence of Mg++, Ca++, SO42-, Cl- ions and can be employed also in contaminated soils.

Dosage
A slurry for Hydroshield: from 0.2 to 0.5%.
As foaming stabilizer from 0.2 to 0.8%.
As polymer for brattice stabilizing mud from 2 to 6 kg/m3.
Our technical laboratory is at the customer complete disposal for optimising the right Mapedrill Bio dosage according to the drilling soil characteristics. Please contact our “Underground Technology Team” technical service for assistance in product optimisation.

Packaging
Mapedrill Bio is available in 25 kg polyethynate paper bags.