ASTM C882/C882M-23
Standard Test Method for Bond Strength of Bonding Systems Used With Concrete By Slant Shear
- Standard No.
- ASTM C882/C882M-23
- Release Date
- 2023
- Published By
- American Society for Testing and Materials (ASTM)
- Latest
- ASTM C882/C882M-23
- Introduction
Interpretation of the core content of the standard
ASTM C882/C882M-23 specifies a complete method system for determining the strength of concrete bond systems using the oblique shear test method, focusing on solving the problem of quantitative evaluation of the bond performance at the interface between new and old concrete.
Test Principles and Technological Evolution
The 30° inclined shear test method adopted in this standard is derived from the version first published in 1978. The 2023 version mainly updates:
Technical Elements 2020 Edition 2023 Edition Improvements Scope of Application Limited to Epoxy Resin Systems Extended to Cement-Based Repair Materials Specimen Preparation Single Curing Scheme Classification by Binder Type Accuracy Requirements Not Clearly Defined Add the judgment standard of surface void ratio ≤ 10%
Key test parameter control
Specimen size: Must meet the requirements of 75mm×150mm cylinder, bevel angle 30°±1.5°, elliptical bonding surface major axis 150mm±2mm
Substrate strength: The 28-day compressive strength of the benchmark mortar is ≥31MPa. When the expected bond strength is >13MPa, it is recommended that the substrate strength is 2.5 times the expected value
Environmental control: Depending on the type of adhesive, the following needs to be controlled:
- Class I/III/IV/VI/VII systems: Temperature as specified in C881/C881M
- Class II/V systems: Constant temperature of 23±1℃
- Latex materials: 50±4% relative humidity
Implementation Points and Common Problems
Surface Preparation: Aggregate must be exposed by sandblasting to remove loose particles. For wet-bonded systems, the surface must remain moist until the adhesive is applied.
Bond Layer Thickness: Grade 2 systems require a 0.5mm thickness. Grade 3 systems, when applied on non-film-wrapped surfaces, require a 2mm thickness for Class VI/VII contact strength testing.
Typical Failure Modes: The 2023 edition adds the requirement to report the fracture location (within the bonding material/in the mortar/at the interface), which is valuable for failure analysis.
Engineering Application Recommendations
1. Material Selection: For underwater repair projects, an epoxy system that meets Type VI/VII standards should be selected, which has more stringent contact strength testing requirements.
2. Process Control: It is recommended to test three parallel specimens for each batch of bonding material. When the standard deviation exceeds 365psi (2.5MPa), operational factors should be investigated.
3. Acceptance Criteria: In addition to strength values, the distribution of voids on the bonding surface should be checked. The total area of voids with a diameter greater than 3mm should not exceed 10%.
ASTM C882/C882M-23 Referenced Document
- ASTM C109/C109M Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
- ASTM C125 Standard Terminology Relating to Concrete and Concrete Aggregates*， 2025-08-15 Update
- ASTM C150/C150M Standard Specification for Portland Cement*， 2024-07-01 Update
- ASTM C192/C192M Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory*， 2025-11-01 Update
- ASTM C39/C39M Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
- ASTM C470/C470M Standard Specification for Molds for Forming Concrete Test Cylinders Vertically
- ASTM C511 Standard Specification for Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
- ASTM C595/C595M Standard Specification for Blended Hydraulic Cements*， 2025-08-01 Update
- ASTM C617/C617M Standard Practice for Capping Cylindrical Concrete Specimens*， 2023-10-20 Update
- ASTM C881/C881M Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete
- ASTM C928/C928M Standard Specification for Packaged, Dry, Rapid-Hardening Cementitious Materials for Concrete Repairs*， 2025-06-01 Update
ASTM C882/C882M-23 history
- 2023 ASTM C882/C882M-23 Standard Test Method for Bond Strength of Bonding Systems Used With Concrete By Slant Shear
- 2020 ASTM C882/C882M-20 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 2013 ASTM C882/C882M-13a Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 2013 ASTM C882/C882M-13 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 2012 ASTM C882/C882M-12 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 2005 ASTM C882/C882M-05e1 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 2005 ASTM C882-05 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
- 1999 ASTM C882-99 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear
