Stuart well Services Ltd

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Bentonite Products

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We stock a range proven to be extremely popular with our drilling and geotechnical engineering clients.

All securely packed in 25kg bags.

Swelltight™ Bentonite Sealing Pellets

Bentonite Sealing Pellets

Extruded Bentonite sealing pellets are prepared from naturally occurring high purity Montmorillonite, sodium activated Bentonite. Contained swelling volume 40%, free swelling volume >500% (48 hours). Retarded swelling onset 15 minutes. Dimensions 10mm diameter 5-15mm length.

Part Number: BBSP

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Swelltight™ Bentonite Granules

Bentonite Granules

Bentonite Granules for dry borehole filling and sealing in underground engineering applications.

Part Number: BBG

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OCMA Grade Bentonite Powder

OCMA Grade Bentonite Powder

CE Bentonite powder prepared from naturally occurring high purity Montmorillonite, sodium activated Bentonite.

Part Number: BBP

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Bentonite Cement / Pellets

Bentonite Cement / Pellets

Cement Bentonite (2:1 ratio) extruded pellet. Montmorillonite Bentonite blended thoroughly with proprietary ordinary Portland cement.

Part Number: BCBP

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Bentonite Cement Powder

Bentonite Cement Powder

Pre-blended cement/Bentonite powder mix. Montmorillonite Bentonite blended thoroughly with proprietary ordinary Portland cement. Typically (2:1 ratio) Cement/Bentonite.

Part Number: BGM

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Thermogrout

Thermogrout

Pre-blended Bentonite powder/sand mix (1:4 ratio). Especially formulated for its thermal conductivity qualities (=1.80 watts/M/K) within the ground source heat pump market.

Part Number: BGTM

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Geoseal™ Grouting Clay

Thermogrout

Geoseal™ is a special grouting clay that provides excellent bore hole sealing yet is easy to mix and use, giving a conductivity of 0.68 watts/m/oC when mixed in water or up to 1.86 watts/m/oC when mixed with sand - see table below.

Geoseal™ has a low swell and slow yield with no flash set, making it ideal for use in Geothermal and sub soil sealing as it has a long working time and can be mixed easily using a wide variety of paddle or cyclone mixers and can be pumped using either a moving diaphragm or piston pump.

Geoseal™ provides excellent bore-hole sealing and fluid loss control, with long term stability and resistance to drying and because it remains plastic it will deform as the land moves and still maintain an excellent seal on the loop.

Applications

  • Geothermal & other grouting
  • Electrical earthing
  • cable and pipe protection

Typical properties

Physical properties
Physical appearance:
Light brown powder
Moisture content:
12% ± 2%
Specific gravity:
2.4 - 2.6
Bulk density:
900 - 1100 kg/m³
Grout properties
Filtrate Loss - ml:
5-10
pH:
7.5-9.0
SG:
1.16-1.74
Permeability m/sec:
1x10-9

Mixing

Grout without Thermal Enhancement
Water - Litres kg Geoseal Final Vol - ltrs Conductivity - watts/m/oC
120 2 bags 136 0.65 - 0.68
880 14 bags 1000 0.65 - 0.68
Thermally Enhanced Grout
Water - Litres Geoseal 20kg Dry Sand 25kg Final Vol - Litres Conductivity - watts/m/oC
80 1 bag 5 bags 138 1.43 - 1.54
87.5 1 bag 8 bags 176 1.68 - 1.82
Water - Litres Geoseal 20kg Moist Sand 25kg Final Vol - Litres Conductivity - watts/m/oC
75 1 bag 6 bags 143 1.50 – 1.62
80 1 bag 9 bags 178 1.73 – 1.98
80 1 bag 10 bags 188 1.86 – 2.06

Note: Quantities are quite critical and for best results the water should be accurately measured into the mixer. Geoseal clay should be added evenly but quickly to water, followed by the sand, and then the grout pumped immediately. Geoseal clay will not flash set, but the mixed grout will get thicker if left mixing, and if necessary small amounts of extra water may be added. *Sand quantity may be varied within the range given for ease of pumping, and the final conductivity depends on the type and quantity of sand used. Consult your Geoseal representative for further information on sand selection and mixing.

Hole Size 3" 4" 5" 6"
Metres/m3 219 123 79 55
Metres/100L 22 12 8 5.5

Available in Bulk, 1mt Big Bags, 20kg sacks on pallets

Part Number: BGEO

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SWS Ready Grout

Thermogrout

A specially formulated blend of OPC, Bentontite and GGBS specifically designed for ease of mixing to provide excellent sealing and a hard but not brittle final grout what exhibits lower shrinkage and lower heat of reaction than regular bentonite/opc grouts.

KM Ready Grout can be used for general purpose grouting to provide a cut off between different strata or to provide a highly impermeable ground barrier that is slightly plastic and which if required can be cut or drilled out easily.

KM Ready Grout comes ready to mix in water - a high shear mixer or a re-circulating centrifugal pump mixer is advised to achieve full dispersion. It also exhibits slow setting time, good pumpability / workability and low bleed so it is easy to place and will not flash set and requires no special plant. It also exhibits slow setting time, good pumpability / workability and low bleed so it is easy to place and will not flash set.

Applications

  • Geothermal & other grouting
  • Repair of slurry walls
  • cable and pipe protection

Typical properties

Physical properties
Physical appearance:
Light grey powder
PH:
12-14
Specific gravity:
2.75 - 3.25
Bulk density:
1100 - 1250 kg/m3
Mean Particle Size:
5-30 microns
LOI:
1.14%
Slurry properties
Marsh funnel viscosity:
38sec
Bleed per litre:
2ml
Fluid loss:
70ml
Conductivity w/m/oc:
0.6 - 0.63
Strength 7/28 days:
352/705 kpa
51/102psi
Permeability 28 days:
7.3x10-11 m/s

Mixing Volumes

* Up to 10% extra water may be used if greater fluidity or if using in very hot weather.
Bags Water - Litres* Final Vol - Litres*
1 90 100
2 180 200
3 270 300
4 360 400
5 450 500
6 540 600
7 630 700
8 720 800
9 810 900
10 900 1000

Available in Bulk, 1mt Big Bags, 25kg sacks on pallets

Part Number: BRG

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