Downer’s stabilisation solutions strengthen road subbases to support heavier traffic, extend pavement life, and reduce long-term maintenance costs.
Our stabilisation capabilities span roads, airports, civil infrastructure, subdivisions and industrial developments, delivering solutions that strengthen pavement foundations, improve material performance and reduce reliance on virgin resources. Backed by Road Science Australia’s technical expertise and laboratory testing, we help customers select and implement the right stabilisation solution for every project.
Our stabilisation product portfolio includes:
Foam bitumen
FoamEx is an Australian-made, specially-formulated bitumen additive designed to achieve the required expansion ratio and half-life characteristics of foamed bitumen.
HaulPac /MultiPac (AU)
Cost-efficient dust suppressant and maintenance solution for unsealed local roads and mine/construction haul roads.
Stabilite FA-LX
An NTRO-approved sustainable cementitious product designed to reduce lime consumption in the stabilisation of subgrade materials, suitable for both engineering and non-engineering applications.
Emulsions
EnviroBase by Road Science NZ
A New Zealand stabilisation emulsion used to improve base layer strength and reduce environmental impact. This bitumen emulsion is designed to waterproof, strengthen, and extend the life of granular pavements. (CSS/ASS60 equivalent in Australia with a similar application to Haulpac).
Learn more about Road Science in Australia
Visit the Downer team at AustStab 2026 to discover how our stabilisation technologies, technical expertise and delivery capability are helping customers improve pavement performance, reduce whole-of-life costs and achieve sustainability objectives.
When: 15-16 September 2026
Where: Novotel Paramatta NSW
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