Case Study – Recycled Material Concrete Production

Recycled Material Concrete Production

Project Partners: Department of Treasury and Finance (Office of Projects Victoria), RMIT, Boral Construction Materials Group, Sustainability Victoria, Whitehorse City Council

This project will investigate and implement new applications of domestic and industrial waste materials (plastics, rubber, crusher dust, industrial by-products) in the concrete construction industry. It will provide long term environmental and economic benefits to key stakeholders: supply-chain, government, and asset owners. 

The project is a strategic response to the demand-supply imbalance in the Victorian infrastructure and waste recovery sector with a primary focus on councils and local municipalities. 

Concrete production in Victoria relies on aggregate and cement sourced from natural and finite sand and rock deposits. These deposits are declining in viability; there is a shortage of quarry materials and natural sands. Alternative sources of sands and aggregates are urgently required to meet forecasted consumption. 

Outcomes and Benefits

  • Optimise concrete mix formulations with combinations of recycled plastic flakes (HDPE) and fines (PET), rubber fines (LDPE), crusher dust fines, recycled concrete aggregates, and supplementary cementitious materials.
  • Develop guidelines for contractors and performance requirements for premix delivery of concrete with recycled material content.
  • Turn waste streams into raw materials.
  • Guarantee the supply chain.

Luke Belfield, Department of Treasury and Finance (Office of Projects Victoria)
Prof. Rebecca Gravina, RMIT