Test methods and specifications

Cover of Cementitious Patch Repair of Concrete
Cementitious Patch Repair of Concrete
  • Publication no: ATS-5340-20
  • Published: 20 January 2020
  • Edition: 1.0

This Austroads Technical Specification sets out the requirements for the patch repair of defective concrete using cementitious materials.

The process of restoring existing concrete typically includes:

  1. breaking back to sound and dense concrete to receive repair material
  2. preparation of steel reinforcement (including possible replacement of steel reinforcement) and concrete substrate
  3. application of an appropriate steel primer and substrate bonding coat
  4. placement of cementitious repair material.
  • 1. Scope
  • 2. Definitions
  • 3. Referenced Documents
  • 4. Quality System Requirements
  • 5. Materials Properties
  • 6. Handling and Storage of Materials
  • 7. Surface Preparation
    • Removal of Defective Concrete
    • Steel Reinforcement
  • 8. Application of Repair Mortar
    • Reinforcement Protection and Substrate-Bonding Coat
    • Application
    • Blowholes and Surface Imperfections
  • 9. Curing and Protection
  • 10. Finishing and Surface Condition
  • 11. Tolerances
  • 12. Quality Control Testing
    • Compressive Strength of Cementitious Repair Material
    • Bond Strength (Pull-Off) Testing
    • Testing for Drummy Areas
    • Test Results
    • Non-conformances
  • Annexure A: Summary of Hold Points, Witness Points and Records