NBS Source
BENTOGROUT®

Application

Suitable for:

  • Foundation walls.
  • Foundation slabs.
  • Tunnels.
  • Sheet piling interlock.
  • Concrete and masonry foundation walls.
  • Manholes.
  • Utility vaults.

Description

A high-solids grout consisting of a proprietary blend of bentonite and polymers, formulated for sealing water leaks in existing below-ground structures.


Features and benefits:

  • BENTOGROUT is pumped in a fluid state adjacent to the exterior of the structure, where it sets into a gelatinous state forming a waterproofing barrier.
  • Can be used to seal leaks in concrete, masonry block, brick, and stone foundations.
  • Fast and easy installation, with limited jobsite space required for injection.
  • Can be pumped from above-ground outside the structure without excavating, or from the interior of the structure through drilled holes in the walls or slabs.
  • Thick BENTOGROUT barrier covers the exterior surface of the structure, filling voids in the adjacent soil and bridging over small cracks in the concrete.
  • Ability to self-seal if the structure settles and therefore performance is not limited by future hair-line cracking in the concrete.
  • Does not shrink or dry out in sub-surface soil formations and is not affected by freeze/ thaw cycling.
  • Remains flexible, maintains a putty-like consistency over time and retains a swell potential to seal itself off.
  • Consists of natural minerals (environmentally friendly) and will last the life of the structure.
  • BENTOGROUT is intended primarily for remedial work, and requires specialist application and equipment, generally by manufacturer.
  • Application: One coat pump applied.
  • Bulk density: 881 kg/m³.
  • Bonded moisture: 12%.
  • Permeability: 5.2 x 10e-8 cm/sec.
  • Mud weight: 1.22 kg/L.

General information

Color

Grey

Material

Bentonite

Grout

Proprietary blend of bentonite and polymers.

Shape

Formless

Powder.

Size

Packaged in 25 kg, multiwall bags, 40 bags per pallet.

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Uniclass

Pr_20_31_53_40 Injection groutsPrimary

CAWS

J30/10 Cold-applied damp-proofing

J30/110 Cold-applied tanking

J30/130 Cold-applied damp-proofing

Specification data - Injection grouts Enhanced data

Grout mix

Hydraulic high-solids, proprietary bentonite and polymer blend grout.

Specific gravity

2.5 gm/cm³.

Density

Bulk Density: 881 kg/m³

MoistureContent

12% (bonded).

Permeability

5.2 x 10^–8 cm/s to ASTM D5084.

Weight

Mud Weight: 1.22 kg/L.

Typical yield

0.06 m³ per bag.

Depth

Cone penetrometer: 44 mm (24 hours).

Literature

BENTOGROUT® - REMEDIAL WATERPROOFING INJECTION GROUT

BENTOGROUT® - REMEDIAL WATERPROOFING INJECTION GROUT