The Emerald Airport Upgrade featured resurfacing the main runway, taxiway and apron bays, reconstructing the general and eastern aviation aprons and refuelling area, and expanding the general aviation apron.
The project was a result of stakeholders including airport owner, Central Highlands Regional Council, and subcontractors working collaboratively and Boral providing operational and technical expertise to successfully complete the first stone mastic asphalt airport in Australia.
The works involved:
- Removal of unsuitable subgrade material and rock blanket replacement.
- Runway and apron parking area deep asphalt patches.
- Apron parking area surface milling, dense-graded variable thickness corrector and final surface layer on the same night.
- Runway dense graded asphalt at variable thickness surface corrector
- Stone mastic asphalt 14mm final surfacing layer thickness ranging from 45mm to 60mm.
- Removal and replacement of the airport ground lighting.
- Construction of the flanking material.
- Fuel resistant membrane.
- Apron and runway temporary and permanent line marking.
- Boral developed the overall design to satisfy CASA MOS139 National Aviation Standards as part of the upgraded design and construct contract.
The mobile asphalt plant was commissioned in September 2019, with mix design production and placement trials completed in early October, to demonstrate the dense-graded and stone mastic asphalt. The asphalt products could be produced and placed to meet the requirements of the new Australian Asphalt Pavement Association airport performance specification including, asphalt mix design performance characteristics, geometrics, compaction, surface texture and friction survey of the first ungrooved stone mastic asphalt runway in Australia.
Under a short project deliverable timeline and stringent project deliverables, the project team maintained high safety and quality standards that met the expectation of the stakeholders with the main runway works being completed in early 2020.