Downer Paves the Way to Greener Roads

Downer EDI (Downer) recently announced the trial of TONERPAVE™, a new asphalt product made with used toner powder extracted from recycled toner cartridges. The trial is a collaboration between Downer, Close the Loop, Stockland and Hume City Council.

TONERPAVE™ was laid on Packington Court in Stockland’s Highlands Estate, a residential development in Craigieburn, 35 kilometres north of Melbourne.

Recycled toner from printer cartridges is well suited to asphalt because toner powder predominantly consists of small particles of very high grade engineering plastics. These same plastics are commonly used to modify bituminous binders for asphalt roads. Cartridges are shredded to separate raw materials for reuse and the toner powder is further refined to make an additive called Modified Toner Polymer (MTP).

TONERPAVE™ uses MTP as an additional ingredient to enhance the performance of conventional asphalt mixes. MTP is made entirely from post-consumer recycled printer cartridges collected by Close the Loop and recovered waste industrial oils.

The Chief Operating Officer of Downer Infrastructure East Sergio Cinerari said TONERPAVE™ was developed by Downer and Melbourne company Close the Loop and is the result of a shared culture of innovation and a genuine desire to reduce the companies’ carbon footprint.

“TONERPAVE™ is the next step in sustainable asphalt development,” Mr Cinerari said. “It utilises waste products from used printer cartridges and waste industrial oils. The addition of MTP in asphalt will reduce our energy consumption and greenhouse gas emissions and gives Downer and our clients the opportunity to recycle waste toner into valuable road infrastructure.

”While it is early days the results are very encouraging. We are pleased to be working with Close the Loop, Stockland and Hume City Council on this initiative and we look forward to the day when TONERPAVE™ can be used widely on Australian roads,” Mr Cinerari said.

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