ISO 10406-3:2019

INTERNATIONAL ISO
STANDARD 10406-3
First edition
2019-07
Fibre-reinforced polymer (FRP)
reinforcement of concrete — Test
methods —
Part 3:
CFRP strips
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Test method for determining tensile properties . 3
5.1 Test pieces . 3
5.1.1 Dimensions . 3
5.1.2 Preparation . 3
5.1.3 Cutting equipment . 4
5.1.4 Cutting accuracy for width of test piece . 4
5.1.5 Number of test pieces . 4
5.2 Testing machine and measuring devices . 5
5.2.1 Testing machine . 5
5.2.2 Strain gauges/extensometers . 5
5.3 Test method . 5
5.3.1 Dimensions of test pieces . 5
5.3.2 Mounting of strain gauges/extensometers . 5
5.3.3 Mounting of test piece . 5
5.3.4 Loading rate . 5
5.3.5 Test temperature . 5
5.3.6 Range of test . 5
5.4 Calculation and expression of test results . 5
5.4.1 General. 5
5.4.2 Load-strain curve . 6
5.4.3 Tensile strength . 6
5.4.4 Young’s modulus . 7
5.5 Test report . 8
6 Test method for exposure to laboratory light sources . 8
6.1 Test pieces . 8
6.1.1 Test plate for accelerated artificial exposure test . . 8
6.1.2 Number of test plates . . 8
6.1.3 Preparation . 8
6.1.4 Number of test pieces . 8
6.2 Testing machine and measuring devices . 8
6.3 Test method . 9
6.3.1 Test period. 9
6.3.2 Tensile strength test . 9
6.4 Calculation and expression of test results . 9
6.4.1 Visual inspection . 9
6.4.2 Handling data . . . 9
6.4.3 Tensile strength retention rate . 9
6.5 Test report . 9
Bibliography .11
Foreword
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.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concreted and
pre-stressed concrete, Subcommittee SC 6, Non-traditional reinforcing materials for concrete structures.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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A list of all parts in the ISO 10406 series can be found on the ISO website.
iv © ISO 2019 – All rights reserved

INTERNATIONAL STANDARD ISO 10406-3:2019(E)
Fibre-reinforced polymer (FRP) reinforcement of
concrete — Test methods —
Part 3:
CFRP strips
1 Scope
This document specifies test methods applicable to unidirectional carbon fibre-reinforced polymer
(CFRP) strips as external-bonded reinforcements on the concrete substrate.
This document is applicable for the CFRP strips that:
— consist of carbon fibre and thermoset resin;
— are manufactured by pultrusion method;
— have a higher carbon fibre fraction such as over 60 %; and
— have a thickness within 3 mm.
Also, the test pieces for determining tensile properties are cut down from CFRP strips along the CFRP
strips axis, and have bonded anchorage block at the both ends.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
ISO 10406-2:2015, Fibre-reinforced polymer (FRP) reinforcement of concrete — Test methods — Part 2:
FRP sheets
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
accelerated artificial exposure testing machine
machine that creates reproducible standard test conditions to accelerate weathering artificially
3.2
anchorage block
tab (3.6) corresponding to the test block to prevent bond failure of the CFRP strips
3.3
anchorage portion
end parts of a test piece fitted with anchoring devices to transmit loads from the testing machine to the
test portion
3.4
Young’s modulus
E
f
elastic modulus in the direction of the fibres
3.5
strip
flat board which has thin thickness compared to width, a flatness-formed rectangular section and
stretches in the longitudinal direction
3.6
tab
plate made of fibre-reinforced polymer, aluminium, or any other suitable material bonded to the test
piece to transmit loads from the testing machine to the test portion
3.7
tensile capacity
F
u
maximum tensile load which the test piece bears during the tensile test
3.8
tensile strength retention rate
R
ett
ratio of the tensile strength after accelerated artificial exposure compared with tensile strength before
accelerated artificial exposure
4 Symbols
For the purposes of this document, the symbols presented in Table 1 apply.
Table 1 — Symbols
Symbol Unit Description Reference
A mm Cross-sectional area 5.4.3, 5.4.4
...