Test Methods and Specifications
Microsurfacing
- Publication no: ATS-3450-23
- Published: 25 January 2023
- Edition: 1.2
- PDF (free) Download
Austroads Technical Specification ATS 3450 sets out the requirements for the manufacture and placement of microsurfacing for use on road pavements and includes requirements for the following:
- component materials
- properties of the microsurfacing
- mix design responsibility
- manufacturing and application
- sampling and testing.
The technical specification can also be downloaded as a Word document.
Edition 1.2 published January 2023
The following changes were made to edition 1.2:
- Table 4.1 change to requirements for mix design.
- Clause 6.7 clarification in relation to percentage points.
- Clause 7.3 clarification of statement to be submitted.
- Clause 9.1 and 9.3 amendment to trial mix requirement.
- Clause 9.13 clarification of rut-filling.
- Table 10.6 amendment to mineral filler test frequency.
Superseded editions
Edition 1.1 published February 2022 (PDF | Word)
The following changes were made to edition 1.1:
- Austroads test method number updated in Clause 2.1 and Table 10.6.
- Clause 6.7 correction to percentage variance allowed in mineral filler added to the mixed materials during placement.
- Clause 8.5 change of terminology in relation to the certificate of calibration.
- Clause 9.23 clarification of traffic type.
- Clause 10.4 clarification in relation to lot.
- Clause 10.6, new note (1) added to table.
- 1. Scope
- 2. Referenced Documents
- 3. Definitions
- 4. Quality System Requirements
- 5. Program of Work
- 6. Materials
- Mineral aggregate
- Mineral filler
- Binder
- Water
- Additives
- 7. Mix Design
- Responsibility for mix design
- Mix design criteria
- Mix design submission
- 8. Plant
- Provision of plant and equipment
- Paving unit calibration
- 9. Field Application
- Placement trial
- General
- Cleaning
- Protection of services and road fixtures
- Tack coat
- Water fog coat
- Weather limitations
- Rut-filling and correction
- Production of microsurfacing mix
- Control of traffic
- Rolling
- 10. Sampling and Testing
- General
- Sampling
- Compliance testing
- 11. Defective Work or Materials
- Annexure A: Summary of Hold Points, Witness Points and Records
Related publications
ATS-3110-26
ATS-3145-26
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