ASTM A1034/A1034M-24
Standard Specification for Mechanical Splices for Steel Reinforcing Bars
- Standard No.
- ASTM A1034/A1034M-24
- Release Date
- 2024
- Published By
- American Society for Testing and Materials (ASTM) US / ASTM
- Latest
- ASTM A1034/A1034M-24
- Introduction
Analysis of the core content of the standard
Test type Type1 requirements Type2 requirements Type3 requirements Tensile strength ≥tensile strength of steel bar (fu) ≥fu ≥fu Compressive strength ≥min(fu,1.25fy) ≥min(fu,1.25fy) ≥min(fu,1.25fy) Residual slip - ≤0.036"(#11 reinforcement) ≤0.036"(#11 reinforcement)
Details of key test methods
1. Monotonic tensile test
According to ASTM A370 standard, the loading rate is divided into two stages:
- Before yield: 70-700 MPa/min
- Post-yield: According to Section 7.6 of the E8/E8M standard
LVDT displacement sensor needs to be placed 1-3 times the diameter of the steel bar away from the joint. The typical test configuration is shown in Figure 1.
2. Cyclic Load Test
Special requirements for simulating earthquake conditions:
- The strain monitoring area must avoid the joint influence area
- The use of lateral support devices is prohibited
- Type 3 joints must pass 10 strain cycles of -0.5%~+2%Eu
Project Implementation Recommendations
Material Control
The following properties of the coupling sleeve must be verified:
- Chemical composition report must be provided for castings/forgings
- Hardness test value should comply with manufacturer's specifications
- Certified steel mill test report shall be used as the basis for acceptance
On-site installation
Critical Control Points:
Parameters Control requirements Installation torque Record the measured value±5% Grouting and curing Control temperature and humidity according to manufacturer's requirements
Standard evolution analysis
Main changes in the 2024 version:
- Transformation of properties: From test method standard to product specification
- New appendix: Mandatory Appendix A1 clarifies the performance indicators of three types of joints
- Safety clauses: Added Section 10.10 on the judgment rules for invalid test results
ASTM A1034/A1034M-24 Referenced Document
- ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
- ASTM E4 Standard Practices for Force Verification of Testing Machines
- ASTM E466 Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials
- ASTM E467 Standard Practice for Verification of Constant Amplitude Dynamic Forces in an Axial Fatigue Testing System
- ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*， 2025-07-01 Update
- ASTM E83 Standard Practice for Verification and Classification of Extensometer
- ASTM E9 Standard Test Methods of Compression Testing of Metallic Materials at Room Temperature
ASTM A1034/A1034M-24 history
- 2024 ASTM A1034/A1034M-24 Standard Specification for Mechanical Splices for Steel Reinforcing Bars
- 2023 ASTM A1034/A1034M-23 Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2010 ASTM A1034/A1034M-10a(2015) Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2010 ASTM A1034/A1034M-10a Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2010 ASTM A1034/A1034M-10 Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2005 ASTM A1034/A1034M-05b Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2005 ASTM A1034/A1034M-05a Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2005 ASTM A1034/A1034M-05 Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
- 2004 ASTM A1034-04 Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars
