Recycled Materials in Road Construction: Innovation in Practice

Recycled Materials in Road Construction

Using recycled materials in road construction reduces waste, conserves natural resources, and can improve road performance. Australia is at the forefront of innovation in this space.

Materials Being Used

Recycled concrete aggregate can replace virgin crushed rock in road base and sub-base layers. Recycled asphalt pavement (RAP) can be incorporated into new asphalt mixes at rates of 15-50%. Crumb rubber from recycled tyres is being used in asphalt binder and spray seals. Recycled glass, plasite, and printer toner have all been trialled in road construction.

Performance Considerations

Engineering rigour is essential when specifying recycled materials. The performance of recycled materials must be verified through laboratory testing and field trials before widespread adoption. Properties such as particle size distribution, strength, durability, and chemical stability must meet the same standards as virgin materials.

Environmental Benefits

Using recycled materials in road construction diverts waste from landfill, reduces the environmental impact of quarrying, and can reduce the carbon footprint of road construction. When properly specified and placed, recycled materials can match or exceed the performance of virgin materials.

Our View

At ACSES Engineers, we support the use of recycled materials where they can be demonstrated to meet performance requirements. Engineering innovation and environmental responsibility are not mutually exclusive - they are complementary.