The M80 Ring Road Completion project has partnered with innovative, local suppliers to introduce ‘void-former’ technology that supports smarter and greener infrastructure in Victoria. This collaboration marks a key step in reducing the environmental impact of concrete construction while delivering durable and efficient outcomes.
The project team used Robovoid formers in retaining walls within the incident response area. This approach delivered clear sustainability and material efficiency gains:
- 29 per cent less concrete in the panels
- 10 per cent less steel reinforcement
- 15.57 per cent reduction in emissions, equal to 6,680.9 kilograms of CO₂e
Robovoid formers are 3D geometric shapes placed inside concrete structures to reduce concrete mass, reinforcement steel and associated emissions. The formers are made from 100 per cent recycled Australian plastic waste and can be removed and recycled at end of life, supporting reuse and circular construction principles.
The construction sector is one of the largest global carbon emitters, with traditional concrete responsible for between 8 and 10 per cent of worldwide emissions. Australia also faces a plastic waste challenge, with only about 13 per cent of plastic waste recycled. Robovoid technology was developed to respond directly to these issues, offering a practical and scalable solution.
By adopting this product for retaining walls, the M80 Ring Road Completion project continues to lead industry innovation and reduce carbon emissions linked to major infrastructure delivery.
Early engagement with stakeholders was crucial to the success of the initiative. The strong collaboration and clear communication during the approval phase mean future projects are expected to progress through the process more efficiently.
Trials focused on refining the concrete mix design and ensuring the void former system could be delivered efficiently at scale.
The result is a smarter, lighter and greener approach to concrete construction that delivers environmental and industry benefits well beyond the project