BENTONITE POWDERS

Kurgan Bentonite Limited manufactures the following grades of bentonite powders PBM-18, PBM-20, PBM-22 which are used for the EPB tunneling, the construction of "slurry wall", groundwater cutoff, "thixotropic jacket" and other construction works.

SPECIAL PROPERTIES OF PBM-GRADE BENTONITE POWDERS:

Developed in accordance with recommendations of the Branch of the JSC TSNIIS R&D “Tunnels and metro” under Russian quality standards in accordance with Technical Specification 5751-001-41219638-2010;
Are a low-budget basis for flushing fluids used in construction;
Environmentally friendly.

Specification:

QUALITY CHARACTERISTICS			GRADE
QUALITY CHARACTERISTICS			PBM-22	PBM-20	PBM-18
Moisture, max		%	10	10	12
Wet sieve residue Mesh № 0071, max		%	2,5	2,5	3,5
Slurry yield with standardized effective viscosity, min		m³	22	20	18
Plastic viscosity, max	For consentration of bentonite 64 g/l	mPa*s	10	10	10
Yield point, min		Pa	7	6	6
Funnel viscosity, max		s	40	40	45
Fluid loss API, max		sm³/30 min	20	20	22
Cake thickness, max		mm	1,5	1,5-2	4

Interesting fact: the filter cake with a thickness of only 1.5-2 mm, formed when using bentonite-based flushing liquids, keeps the walls from collapse at depths of up to 30 meters and more.

FLUSHING LIQUIDS FOR CONSTRUCTION WHERE OUR BENTONITE IS USED:

Have low sand content thus reducing wear on drilling equipment.
Possesses optimal viscoplastic and filtration characteristics.
Provides effective borehole cleanout;
Have excellent penetrating and sealing properties

BENEFITS OF USING OUR BENTONITES:

Improves construction works efficiency;
Reduces consumption of bentonite powder;
The risk of accidents is minimized;
Increases the equipment service life;
Hazard category of drilling cuttings is lowered;
Considerable cost reduction while bore hole drilling.

If you have any questions or need any professional advice, or if you want to order bentonite products, please send us a request:

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