Test Methods and Specifications
Cementitious Patch Repair of Concrete
- Publication no: ATS-5340-25
- Published: 10 July 2025
- Edition: 1.1
- PDF (free) Download
Austroads Technical Specification 5340 sets out the requirements for the patch repair of defective concrete using cementitious materials. It applies to the repair of existing structures where the concrete has deteriorated and to newly cast concrete with defects that require repair.
The process of restoring existing concrete typically includes:
- breaking back to sound and dense concrete to receive repair material
- preparation of steel reinforcement (including possible replacement of steel reinforcement) and concrete substrate
- application of an appropriate steel primer and substrate bonding coat
- placement of cementitious repair material
- finishing and curing.
The technical specification can also be downloaded as a Word document.
Edition 1.1 published July 2025
- amends clauses 1.1, 1.3, 2.1, 4.1, 6.1, 6.6, 7.12, 7.13, 8.12, 12.2.
- adds clauses 5, 8.1, 8.2, 8.4, 10.7 and 12.14.
Superseded editions
- 1. Scope
- 2. Referenced Documents
- 3. Definitions
- 4. Quality System Requirements
- 5. Contractor’s Personnel
- General
- 6. Materials
- General
- Handling and Storage of Materials
- 7. Surface Preparation
- Assessment Report
- Removal of Defective Concrete
- Steel Reinforcement
- 8. Application of Repair Materials
- General
- Reinforcement Protection and Substrate-Bonding Coat Application
- Blowholes and Surface Imperfections
- 9. Curing and Protection
- 10. Finishing and Surface Condition
- 11. Tolerances
- 12. Conformance Testing
- Compressive Strength of Cementitious Repair Material
- Bond Strength (Pull-Off) Testing
- Testing for Drummy Areas
- Test Results
- Non-conformance
- Annexure A: Summary of Hold Points, Witness Points and Records
Related publications
ATS-5341-20
ATS-5343-20
ATS-5330-20
Latest Test Methods and Specifications News