Dense Graded Asphalt (DGA) is a common and highly adaptable graded asphalt mix used across Australia’s road networks. Engineered for strength, smoothness and durability, DGA is suitable for a wide range of applications including structural layers, wearing courses and surface rehabilitation.

This mix combines dense graded aggregates with bitumen and optional mineral fillers, laid and compacted hot to form a uniform, long-lasting surface. It’s a key component in modern flexible pavements, offering reliable performance in both urban and regional settings.

Why Choose Dense Graded Asphalt?

As one of the most widely used asphalt types in Australia, Dense Graded Asphalt offers a dependable solution for both new construction and maintenance projects. Its versatility makes it suitable for everything from high-traffic council roads to community infrastructure.

DGA is a trusted option for:

• Long-lasting performance in diverse climates and conditions
• Efficient installation with minimal disruption
• Compatibility with recycled materials and sustainability goals

Technical Details

Dense Graded Asphalt is available in hot mix, warm mix and cold mix formats, and typically supplied in bulk. It is black in colour and designed to meet a variety of performance specifications depending on the project requirements.

The mix includes:

• Dense graded aggregates
• Bitumen binder
• Optional mineral filler for enhanced performance

Frequently Asked Questions

What is graded asphalt used for?
Graded asphalt is used for structural layers, wearing courses, and surface rehabilitation across roads, airports, carparks and footpaths.

Can Dense Graded Asphalt be customised for different projects?
Yes. It can be designed as hot mix, warm mix or cold mix depending on performance needs and site conditions.

Is Dense Graded Asphalt suitable for wet weather?
Yes. Its dense, smooth surface improves road safety and durability in wet conditions.

Do Boral’s dense asphalt mixes support sustainability?
Yes. Select DGA mixes may include recycled asphalt pavement (RAP), supporting circular economy principles.