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Rombus BMA mining project case study
Mining case study

BHP Mitsubishi Alliance workshop slab rehabilitation

Rombus delivered an innovative pavement rehabilitation solution for the BHP Mitsubishi Alliance (BMA) Blackwater maintenance workshop in Queensland, restoring a damaged 1,200m² concrete slab without full removal and replacement.
Restoring a failing heavy vehicle workshop without full reconstruction
Following a detailed assessment of the damaged workshop slab, Rombus implemented its modular concrete overlay system to strengthen the existing pavement rather than replace it.

This engineered solution preserved the existing infrastructure while delivering a resilient, long-lasting surface with significantly lower environmental impact and reduced downtime compared to conventional reconstruction methods.
  • $780,000 Cost Saved
  • 130 tonne Carbon Avoided
  • 7 tonne Plastic Utilised
  • 10 days Reduced Downtime

The Challenge

The maintenance workshop for heavy mine vehicles was experiencing severe cracking throughout its concrete slab. Sections of the slab had shifted, allowing groundwater to pump to the surface.

Despite being a 200–350mm thick, 40 MPa fibre-reinforced concrete slab constructed on a compacted sub-base, the pavement had failed under continuous heavy traffic, compromising the workshop's stability and functionality.

The Solution

Although the extensive slab damage and poor subgrade conditions initially indicated that complete removal and reconstruction would be required, Rombus developed a cost-effective, low-downtime alternative.

By overlaying the existing concrete with the Rombus modular pavement system, the project eliminated the need for full replacement while delivering a durable and reliable surface with significantly lower carbon emissions.

Rombus project in action

See how the Rombus modular overlay system restored the existing workshop slab without the need for full reconstruction. The gallery showcases key stages of the installation and the completed surface built to withstand demanding heavy vehicle traffic.
BMA Rombus mining slab project case studyRombus BMA mining project case studyBHP Mitsubishi alliance workshop-rombus-project
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