ISO 15630-3:2019
Steel for the reinforcement and prestressing of concrete — Test methods — Part 3: Prestressing steel
This document specifies test methods applicable to prestressing steel (bar, wire or strand) for concrete.
This document does not cover the sampling conditions that are dealt with in the product standards.
A list of options for agreement between the parties involved is provided in Annex A.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 General provisions concerning test pieces
5 Tensile test
5.1 Test piece
5.2 Test equipment
5.3 Test procedure
5.3.1 General
5.3.2 Determination of the modulus of elasticity
6 Bend test
6.1 Test piece
6.2 Test equipment
6.3 Test procedure
6.4 Interpretation of test results
7 Reverse bend test
7.1 Test piece
7.2 Test equipment
7.3 Test procedure
8 Wrapping test
8.1 Test piece
8.2 Test equipment
8.3 Test procedure
9 Isothermal stress relaxation test
9.1 Principle of test
9.2 Test piece
9.3 Test equipment
9.3.1 Frame
9.3.2 Force-measuring device
9.3.3 Length-measuring device (extensometer)
9.3.4 Anchoring device
9.3.5 Loading device
9.4 Test procedure
9.4.1 Provisions concerning the test piece
9.4.2 Application of force
9.4.3 Initial force
9.4.4 Force during the test
9.4.5 Maintenance of strain
9.4.6 Temperature
9.4.7 Frequency of force recording
9.4.8 Frequency of strain recording
9.4.9 Duration of the test
10 Axial force fatigue test
10.1 Principle of test
10.2 Test piece
10.3 Test equipment
10.4 Test procedure
10.4.1 Provisions concerning the test piece
10.4.2 Stability of force and frequency
10.4.3 Counting of force cycles
10.4.4 Frequency
10.4.5 Temperature
10.4.6 Validity of the test
11 Stress corrosion test in a solution of thiocyanate
11.1 Principle of test
11.2 Sample and test piece
11.3 Test equipment
11.3.1 Frame
11.3.2 Force-measuring device
11.3.3 Time-measuring device
11.3.4 Test cell containing the test solution
11.3.5 Test solution
11.4 Test procedure
11.4.1 Provisions concerning the test pieces
11.4.2 Application and maintenance of force
11.4.3 Filling of the test cell
11.4.4 Temperature during the test
11.4.5 Termination of the test
11.4.6 Determination of median lifetime to fracture
12 Deflected tensile test
12.1 Principle of test
12.2 Sample and test pieces
12.3 Test equipment
12.3.1 General description
12.3.2 Dimensions
12.3.3 Anchorages
12.3.4 Mandrel
12.3.5 Loading device
12.4 Test procedure
13 Chemical analysis
14 Measurement of the geometrical characteristics
14.1 Test piece
14.2 Test equipment
14.3 Test procedures
14.3.1 Rib measurements
14.3.2 Indentation measurements
14.3.3 Lay length of strand (P)
14.3.4 Straightness
15 Determination of the relative rib area (fR)
15.1 General
15.2 Calculation of fR
15.2.1 Relative rib area
15.2.2 Simplified formulae
15.2.3 Formula used for the calculation of fR
16 Determination of deviation from nominal mass per metre
16.1 Test piece
16.2 Accuracy of measurement
16.3 Test procedure
17 Test report
Annex A (informative) Options for agreement between the parties involved
Bibliography
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Related Information
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AS/NZS 4672.1:2007
Steel prestressing materials - General requirements
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AS/NZS 4672.2:2007
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BS 4449:2005+A3:2016
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BS 4482:2005
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 General provisions concerning test pieces
5 Tensile test
5.1 Test piece
5.2 Test equipment
5.3 Test procedure
5.3.1 General
5.3.2 Determination of the modulus of elasticity
6 Bend test
6.1 Test piece
6.2 Test equipment
6.3 Test procedure
6.4 Interpretation of test results
7 Reverse bend test
7.1 Test piece
7.2 Test equipment
7.3 Test procedure
8 Wrapping test
8.1 Test piece
8.2 Test equipment
8.3 Test procedure
9 Isothermal stress relaxation test
9.1 Principle of test
9.2 Test piece
9.3 Test equipment
9.3.1 Frame
9.3.2 Force-measuring device
9.3.3 Length-measuring device (extensometer)
9.3.4 Anchoring device
9.3.5 Loading device
9.4 Test procedure
9.4.1 Provisions concerning the test piece
9.4.2 Application of force
9.4.3 Initial force
9.4.4 Force during the test
9.4.5 Maintenance of strain
9.4.6 Temperature
9.4.7 Frequency of force recording
9.4.8 Frequency of strain recording
9.4.9 Duration of the test
10 Axial force fatigue test
10.1 Principle of test
10.2 Test piece
10.3 Test equipment
10.4 Test procedure
10.4.1 Provisions concerning the test piece
10.4.2 Stability of force and frequency
10.4.3 Counting of force cycles
10.4.4 Frequency
10.4.5 Temperature
10.4.6 Validity of the test
11 Stress corrosion test in a solution of thiocyanate
11.1 Principle of test
11.2 Sample and test piece
11.3 Test equipment
11.3.1 Frame
11.3.2 Force-measuring device
11.3.3 Time-measuring device
11.3.4 Test cell containing the test solution
11.3.5 Test solution
11.4 Test procedure
11.4.1 Provisions concerning the test pieces
11.4.2 Application and maintenance of force
11.4.3 Filling of the test cell
11.4.4 Temperature during the test
11.4.5 Termination of the test
11.4.6 Determination of median lifetime to fracture
12 Deflected tensile test
12.1 Principle of test
12.2 Sample and test pieces
12.3 Test equipment
12.3.1 General description
12.3.2 Dimensions
12.3.3 Anchorages
12.3.4 Mandrel
12.3.5 Loading device
12.4 Test procedure
13 Chemical analysis
14 Measurement of the geometrical characteristics
14.1 Test piece
14.2 Test equipment
14.3 Test procedures
14.3.1 Rib measurements
14.3.2 Indentation measurements
14.3.3 Lay length of strand (P)
14.3.4 Straightness
15 Determination of the relative rib area (fR)
15.1 General
15.2 Calculation of fR
15.2.1 Relative rib area
15.2.2 Simplified formulae
15.2.3 Formula used for the calculation of fR
16 Determination of deviation from nominal mass per metre
16.1 Test piece
16.2 Accuracy of measurement
16.3 Test procedure
17 Test report
Annex A (informative) Options for agreement between the parties involved
Bibliography