Where our void filling solutions are applied

Our void filling and sinkhole repair solutions are applied across critical infrastructure, including:

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Roads and highways

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Airport runways, taxiways, and aprons

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Rail track beds and embankments

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Manholes, culverts, and buried utility chambers

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Commercial and industrial warehouse floors

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Public buildings and open spaces

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Where our void filling solutions are applied

Our void filling and sinkhole repair solutions are applied across critical infrastructure, including:

Roads and highways
Airport runways, taxiways, and aprons
Rail track beds and embankments
Manholes, culverts, and buried utility chambers
Commercial and industrial warehouse floors
Public buildings and open spaces

Benefits of Geobear void filling

Geobear’s geopolymer injection system provides a rapid, sustainable solution for filling voids and stabilising ground.

Geobear on site

Minimal disruption

Our no-dig approach allows assets to remain operational while we work.

View looking past a rotating laser level on a tripod to Geobear techs working on raising a sunken terrace in a block of flats.

Pinpoint accuracy

Expanding resins fill every cavity and compact surrounding soils, ensuring complete fill and stabilisation.

Void filling graphic

Rapid results

Materials cure in minutes, enabling hand-back in hours.

CO2 assesssed

Lower carbon footprint

Up to 75% less carbon than concrete-based alternatives.

The Geobear process

1

Detailed design

Every site is unique, so our engineers start with a detailed survey and design a detailed treatment plan tailored to your project. This will specify exactly where the geopolymer is to be injected and at what level and in what quantities. Geobear has a range of 22 different geopolymers which have differing performance characteristics, the engineers will choose the one which is best suited for your project.

2

Geopolymer injection

The geopolymer is installed via small diameter temporary steel tubes, which are drilled into the ground to the required depth. The geopolymer is injected in liquid form which then rapidly expands in-situ into a hardened material with specific engineering properties.

3

Expansion

The expansion fills the voids and compacts any loose materials which might be present. The reaction profile of the geopolymer is very quick in comparison to cementitious grouts, gaining 90% of its compressive strength within 15 minutes and then fully cured within 1 hour.

4

Monitoring

Throughout the process, we monitor movement and pressure in real time – ensuring precision, control, and reliable results. Specified performance can be measured via in situ penetration testing.

Case studies

Geobear has delivered urgent void filling and sinkhole remediation throughout the UK. Examples include:

View all case studies
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Shugborough Tunnel shaft void filling

Geobear stabilised hidden construction shafts and tunnel lining voids at Shugborough Tunnel with geopolymer injection.

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Infra case study swanage

Protecting a listed sea wall in Swanage

Geobear filled voids behind Swanage’s Grade II listed sea wall with inert geopolymer resin. The solution reinstated ground support.

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Ground strengthening and void filling on the M11

Geobear delivered rapid void filling solution beneath the M11 at Junction 14, avoiding collapse risk.

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Challenges

Our void-filling solutions are designed to address urgent ground failures, including:

Pavement slab dropped needs re-levelling

Slab settlement and cracking

Indicating loss of support beneath concrete.

Working on ground voids

Unstable ground

Depressions or cracks pointing to hidden voids.

On a sinkhole site

Sinkhole formation

Visible holes or sudden collapse requiring immediate remediation.

Void filled beneath A83

Water erosion

Soil loss from poor drainage or flooding creating hidden cavities

Talk with Geobear today

Don’t wait for a hidden void to become a major failure. Speak to our engineers today for a rapid, safe, and effective void-filling solution.

Contact us
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