1.0.1 This specification is developed with the purpose of regulating the test for reinforcing steel bar in concrete structure and member and the evaluation method for test result and improving the reliability and comparability of test result.
1.0.2 This specification is applicable to the site test for spacing, nominal diameter, corrosion property and concrete protective cover thickness of reinforcing steel bar in concrete structure and member.
1.0.3 The following information should be provided before test:
1 Project name, structure and member names and corresponding design drawing for reinforcing steel bar;
2 Names of development, design, construction and supervision organizations;
3 Ferromagnetic material contained in the concrete;
4 Type, grade, design specification, design protective cover thickness of reinforcing steel bar at tested position as well as the reserved pipeline, metal embedded parts etc. in structural members;
5 Information relevant to construction record etc.;
6 Test reason.
1.0.4 Test for reinforcing steel bar in concrete, if any, shall not only meet the requirements of this specification, but also comply with those in the relevant current national standard.
2 Terms and Symbols
2.1 Terms
2.1.1 Electromagnetic test method
the method of testing the spacing of reinforcing steel bar and thickness and nominal diameter of concrete protective cover in concrete structure and member on the principle of electromagnetic induction
Foreword i 1 General 2 Terms and Symbols 2.1 Terms 2.2 Symbols 3 Test for Spacing and Protective Cover Thickness of Reinforcing Steel Bar 3.1 General Requirements 3.2 Requirements of Instrument Performance 3.3 Test Technology of Reinforcing Steel Bar Detector 3.4 Test Technology of Radar 3.5 Test Data Processing 4 Test for Diameter of Reinforcing Steel Bar 4.1 General Requirements 4.2 Test Technology 5 Test for Corrosion Property of Reinforcing Steel Bar 5.1 General Requirements 5.2 Requirements of Instrument Performance 5.3 Curing, Maintenance and Calibration of Reinforcing Steel Bar Corrosion Tester 5.4 Half-cell Potential Test Technology of Reinforcing Steel Bar 5.5 Test Result Judgment of Half-cell Potentials Test Method Annex A Test Record Tables Annex B Calibration Method of Reinforcing Steel Bar Detector with Electromagnetic Test Method B.1 Preparation of Calibration Specimen B.2 Calibration Items and Index Requirements B.3 Calibration Procedures Annex C Calibration Method with Radar C.1 Preparation of Standard Specimen C.2 Calibration Items and Index Requirements C.3 Calibration Procedures Explanation of Wording in this Specification
Standard
JGJ/T 152-2008 Technical specification for test of reinforcing (English Version)
1 General
1.0.1 This specification is developed with the purpose of regulating the test for reinforcing steel bar in concrete structure and member and the evaluation method for test result and improving the reliability and comparability of test result.
1.0.2 This specification is applicable to the site test for spacing, nominal diameter, corrosion property and concrete protective cover thickness of reinforcing steel bar in concrete structure and member.
1.0.3 The following information should be provided before test:
1 Project name, structure and member names and corresponding design drawing for reinforcing steel bar;
2 Names of development, design, construction and supervision organizations;
3 Ferromagnetic material contained in the concrete;
4 Type, grade, design specification, design protective cover thickness of reinforcing steel bar at tested position as well as the reserved pipeline, metal embedded parts etc. in structural members;
5 Information relevant to construction record etc.;
6 Test reason.
1.0.4 Test for reinforcing steel bar in concrete, if any, shall not only meet the requirements of this specification, but also comply with those in the relevant current national standard.
2 Terms and Symbols
2.1 Terms
2.1.1 Electromagnetic test method
the method of testing the spacing of reinforcing steel bar and thickness and nominal diameter of concrete protective cover in concrete structure and member on the principle of electromagnetic induction
Contents of JGJ/T 152-2008
Foreword i
1 General
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Test for Spacing and Protective Cover Thickness of Reinforcing Steel Bar
3.1 General Requirements
3.2 Requirements of Instrument Performance
3.3 Test Technology of Reinforcing Steel Bar Detector
3.4 Test Technology of Radar
3.5 Test Data Processing
4 Test for Diameter of Reinforcing Steel Bar
4.1 General Requirements
4.2 Test Technology
5 Test for Corrosion Property of Reinforcing Steel Bar
5.1 General Requirements
5.2 Requirements of Instrument Performance
5.3 Curing, Maintenance and Calibration of Reinforcing Steel Bar Corrosion Tester
5.4 Half-cell Potential Test Technology of Reinforcing Steel Bar
5.5 Test Result Judgment of Half-cell Potentials Test Method
Annex A Test Record Tables
Annex B Calibration Method of Reinforcing Steel Bar Detector with Electromagnetic Test Method
B.1 Preparation of Calibration Specimen
B.2 Calibration Items and Index Requirements
B.3 Calibration Procedures
Annex C Calibration Method with Radar
C.1 Preparation of Standard Specimen
C.2 Calibration Items and Index Requirements
C.3 Calibration Procedures
Explanation of Wording in this Specification
