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Road bridge abutment strengthening and void filling

Challenge

Voids and weakened ground beneath a road bridge abutment threatened stability, requiring strengthening works without disrupting traffic or undertaking major excavation.

Solution

Geobear used precision geopolymer injection to fill voids, strengthen underlying soils and improve bearing capacity, delivering rapid stabilisation with minimal traffic disruption.

Abutment stabilised

Improved bearing capacity beneath structure

Void filling completed

Targeted geopolymer injection

Traffic disruption minimised

Rapid, non‑intrusive installation

Background

Bridge abutments rely on stable, well‑compacted ground to safely transfer loads from the superstructure.

Void formation or soil weakening can lead to settlement, cracking and long‑term structural risk if not addressed promptly.

Challenge

The project required strengthening beneath the abutment while maintaining road operations.

raditional excavation or rebuild methods would have been disruptive, costly and time‑intensive.

Solutions

Geobear implemented a controlled geopolymer injection programme through small diameter access points.

The expanding resin filled existing voids and densified surrounding soils, increasing bearing capacity and restoring stability.

Real‑time monitoring ensured precise treatment and controlled ground improvement.

Results

The abutment was successfully strengthened and stabilised within a short timeframe.

The solution avoided major excavation, reduced programme duration and minimised disruption to road users.

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