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Newell Highway Upgrade Project

Proposed Foamed Bitumen Stabilisation

This investigation was for a 28 km stretch of Newell Highway that is a single lane in each direction. It has the highest heavy vehicle traffic in NSW and is an annual flood risk.

Foamed bitumen is a mixture of air, water and bitumen. Once a foaming agent is mixed, it expands about 15 times, it has a large surface area and low viscosity. When mixed with gravel material, the droplets coat the finer particles that binds them together.

Presentation On Foamed Bitumen Thumb


Presentation On Foamed Bitumen (presentation // 4.615 MB) Presentation On Foamed Bitumen (PDF // 6.095 MB)