National Specifications for Crumb Rubber Modified (CRM) Asphalt
Tyre Stewardship Australia (TSA) and the Australian Asphalt Pavement Association (AAPA) have introduced new national specifications for Crumbed Rubber Modified (CRM) asphalt, published in early June, for open graded asphalt (OGA) and gap graded asphalt (GGA) mix designs.
This pilot specification sets out the requirements for CRM OGA surface layers with a nominal maximum aggregate size of 10 mm and 14 mm. The specification also includes requirements for CRM GGA mixes with a nominal maximum aggregate size of 14 mm and 20 mm.
New CRM Tech-Talk Series
Supporting the national specifications, TSA and AAPA will be delivering a series of information sessions outlining global best practice and the latest technological developments in road maintenance and construction using recycled crumbed rubber, with the aim of increasing understanding of the application of the products.