Project 5.2 (2019)
Background
Recycling of ground tyre rubber as modifier in bituminous binders for road construction provides a high-value application of the recycled material. According to literature, up to 1,250 waste tyres can be used for a simple 50 mm asphalt overlay of one lane per one kilometre.
The available body of knowledge shows that the use of crumb rubber modified (CRM) binder in both asphalt and sprayed seals can lead to improved field performance; specifically, durability, cracking and skid resistance, and reduced traffic noise. CRM asphalt binder could be engineered to achieve similar performance of polymer-modified binders, widely adopted in Australia. Besides performance, environmental impacts and life-cycle costs of road maintenance can also be reduced by using CRM.
Project Objectives
1. Develop indications and mix-design of asphalt self-healing mixes to be applied as pavement assets preservation treatment
2. Deliver a performance-based classification system of crumb rubber-modified bitumen
- Dr Filippo Giustozzi (LCI - RMIT University)
- Dr Dilan Robert (RMIT University)
