Test Methods and Specifications
In Situ Pavement Stabilisation Using Foamed Bitumen
- Publication no: ATS-3350-25
- Published: 17 September 2025
- Edition: 1.0
- PDF (free) Download
Austroads Technical Specification ATS 3350 sets out the requirements for the in situ stabilisation of pavement material using Foamed Bitumen and Secondary Stabilising Binders.
The technical requirements for the mix design of the stabilised material are excluded from this Specification.
This technical specification is also available as a Word document.
- 1. Scope
- 2. Referenced Documents
- 3. Definitions
- 4. Quality System Requirements
- 5. Approval of the Mix Design
- General
- 6. Constituent Materials
- General
- Imported Material to be Stabilised
- Stockpiling of Imported Material to be Stabilised
- Stabilising Binders
- Water
- Foaming Agent
- Testing and approval Approval of Constituent Materials
- 7. Plant and Equipment
- General
- Secondary Stabilising Binder Equipment
- Intelligent Construction Rollers
- 8. Construction of the Stabilised Pavement
- Quality Plan
- General
- Trial Pavement
- Working Time
- Conditions for Stabilisation
- Material not Incorporated into the Stabilised Pavement
- Incorporation of Moisture
- Uniformity of Stabilised Material
- 9. Preparatory Work
- General
- Removal of Material Unsuitable for Stabilisation
- Preliminary Pulverisation
- Shape Correction (if Required)
- Shaping, Compacting and Trimming the Surface
- 10. Secondary Stabilising Binder
- General
- Corrected content
- Spreading of Secondary Stabilising Binder
- Secondary Stabilising Binder Content
- Quicklime as the Secondary Stabilising Binder
- Time Between Spreading and Mixing
- Incorporation of the Secondary Stabilising Binder
- Single pass Secondary Stabilising Binder incorporation
- Two pass Secondary Stabilising Binder incorporation
- Time Between Mixing the Secondary Stabilising Binder and the Primary Stabilising Binder
- Compaction after incorporation of the Secondary Stabilising Binder
- 11. Primary Stabilising Binder
- General
- Compaction and Shaping the Surface Prior to the
- Incorporation of the Primary Stabilising Binder
- Incorporation of the Primary Stabilising Binder and Mixing
Moisture Ratio - Primary Stabilising Binder Content
- Measuring Actual Stabilised Layer Thickness
- 12. Compacting, Trimming, Curing and Finishing the Stabilised Material
- Compaction
- Trimming After Compaction
- Intelligent Construction
- Longitudinal Joints
- Transverse Joints
- Trafficking the Stabilised Layer
- Curing
- Maintenance of the Stabilised Llayer
- 13. Conformity of the Stabilised Pavement
- General
- Conformance Testing
- Time Limits for Testing
- Surface Finish
- Road Roughness
- Compaction
- Proof Rolling
- 14. Conformity – Geometrics
- General
- Geometric Tolerances
- Vertical Tolerances
- Deviation from a Straightedge
- Crossfall
- 15. Acceptance
- Annexure A: Summary of Hold Points, Witness Points and Records
- Annexure B: Incorporation of Stabilising Binder and Mixing
- Amendment Record
- Attachment A: Contract Specific Requirements
Related publications
ATS-3145-26
ATS-3510-25
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