Gauge for residual deformation of mechanical and grouted-sleeve rebar splices after uniaxial tensile tests. Request a quote from iRoad.
Overview
This instrument is designed per JGJ 107-2016 "Technical specification for mechanical splicing of steel reinforcing bars". It is used to measure the residual deformation of grouted-sleeve / mechanical rebar splices after uniaxial tensile testing. The system consists of two symmetric double-lever displacement extensometers and a dual-channel digital indicator: before testing, the knife edges of the two extensometers are clipped onto the rebar on both sides of the splice to set the gauge length; after loading to the prescribed stress and unloading, the indicator directly reads the residual deformation on each side and averages them. It is suitable for rebars of 540mm and for grading splices as Class I / II / III; a standard instrument for construction quality-inspection labs.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Gauge length range | 30–270mm adjustable |
| Measuring range | 0–10mm |
| Display resolution | 0.001mm |
| Applicable rebar diameter | φ5–φ40mm |
| Accuracy class | Class 1 (≤±1%FS) |
| Channels | 2 (A left / B right), auto-average |
| Display | colour LCD touchscreen, shows A, B, average |
| Calibrator | GWB-200B high-precision extensometer calibrator (0–25mm) |
| Storage & comm. | data logging, USB/RS232 upload |
| Power | AC 220V/50Hz (rechargeable battery) |
| Standard | JGJ 107-2016 mechanical rebar splicing |
| Application | residual deformation & class grading of splices |
| Components | dual extensometers + dual-channel indicator + cables |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Residual Deformation Gauge for Rebar Mechanical Splices comply with?
A1: The Residual Deformation Gauge for Rebar Mechanical Splices is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Residual Deformation Gauge for Rebar Mechanical Splices be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
Overview
This instrument is designed per JGJ 107-2016 "Technical specification for mechanical splicing of steel reinforcing bars". It is used to measure the residual deformation of grouted-sleeve / mechanical rebar splices after uniaxial tensile testing. The system consists of two symmetric double-lever displacement extensometers and a dual-channel digital indicator: before testing, the knife edges of the two extensometers are clipped onto the rebar on both sides of the splice to set the gauge length; after loading to the prescribed stress and unloading, the indicator directly reads the residual deformation on each side and averages them. It is suitable for rebars of 540mm and for grading splices as Class I / II / III; a standard instrument for construction quality-inspection labs.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Gauge length range | 30–270mm adjustable |
| Measuring range | 0–10mm |
| Display resolution | 0.001mm |
| Applicable rebar diameter | φ5–φ40mm |
| Accuracy class | Class 1 (≤±1%FS) |
| Channels | 2 (A left / B right), auto-average |
| Display | colour LCD touchscreen, shows A, B, average |
| Calibrator | GWB-200B high-precision extensometer calibrator (0–25mm) |
| Storage & comm. | data logging, USB/RS232 upload |
| Power | AC 220V/50Hz (rechargeable battery) |
| Standard | JGJ 107-2016 mechanical rebar splicing |
| Application | residual deformation & class grading of splices |
| Components | dual extensometers + dual-channel indicator + cables |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Residual Deformation Gauge for Rebar Mechanical Splices comply with?
A1: The Residual Deformation Gauge for Rebar Mechanical Splices is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Residual Deformation Gauge for Rebar Mechanical Splices be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
