Use of Recycled Plastics in Road Surfacing

The ban on the export of recycled waste plastic by the Australian government has led to interest in the use of recycled waste plastic in road surfacing applications. Austroads has published a report, Interim guidelines for the use of recycled waste plastic in local government road surfacing applications, to assist local government in the use and procurement of road surfacing products incorporating recycled waste plastic.

This webinar, presented by Azeem Remtulla and Steve Halligan provides key information from the interim guidelines, discusses the status of the use of recycled waste plastic in road surfacing applications, the methods for the addition of recycled waste plastic into bituminous binders and asphalt along with limitations on the use of recycled waste plastic and proposes a methodology to the procurement of products incorporating recycled waste plastic.

The webinar also discusses surfacing applications for local council roads and propose a framework for comparing the properties of conventional asphalt to alternative asphalt mixes containing recycled waste plastic. This framework is based on current state road authority (SRA) and local government asphalt specifications and includes proposed tests to compare the performance properties of conventional asphalt against alternative asphalt mixes.

Worked hypothetical examples of the procurement and assessment process for asphalt incorporating recycled waste plastic as an alternative to conventional asphalt are also shared.