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Vibration control and reduction on rocking slabs

Challenge

Rocking concrete slabs caused vibration, operational disruption and safety concerns, requiring stabilisation without removing or replacing the existing floor structure.

Solution

Geobear used precision geopolymer injection to fill voids, stabilise the sub‑base and eliminate slab movement with minimal disruption to site activities.

Rocking eliminated

Slabs stabilised in situ

No slab replacement

Cost and time savings achieved

Minimal disruption

Operations maintained throughout

Background

Rocking slabs commonly occur when voids develop beneath concrete floors due to soil movement, washout or poor compaction.

Even minor loss of support can lead to vibration under load, affecting safety, equipment performance and occupant comfort.

Traditional repair methods often involve breaking out and replacing slabs.

Challenge

Movement beneath the slabs resulted in noticeable vibration and instability.

The client required a fast, low‑intrusion solution that would restore support and eliminate rocking without major demolition or operational downtime.

Solutions

Geobear implemented a targeted geopolymer injection programme beneath the affected slabs.

The expanding resin filled voids and densified loose soils, re‑establishing continuous contact between slab and sub‑base.

Injection was carefully controlled to prevent over‑lifting.

Results

Rocking and vibration were successfully eliminated, restoring stability and performance.

The solution avoided costly slab replacement and delivered a durable outcome with minimal site disruption.

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