ISO 13180-1

Fibre-reinforced cementitious composites (FRCCs) — Direct tensile test method — Part 1: Strain hardening FRCCs

This document specifies a test method for evaluating direct tensile resistance of strain hardening fibre-reinforced cementitious composites (FRCCs) using tensile parameters. This test method provides tensile stress versus strain curve, first cracking strength, post cracking strength, strain capacity (strain at post cracking point), and the number of cracks within gauge length. This test method is primarily intended for use with FRCCs that exhibit strain hardening behaviour. This test method is not intended for materials that exhibit strain-softening behaviour.

Composites à base de ciment renforcés par des fibres — Méthode d'essai de traction directe — Partie 1: Composites à base de ciment renforcés de fibres à durcissement sous contrainte

General Information

• Status: Not Published
• ICS: 91.100.40 - Products in fibre-reinforced cement
• Technical Committee: ISO/TC 71/SC 6 - Non-traditional reinforcing materials for concrete structures
• Drafting Committee: ISO/TC 71/SC 6 - Non-traditional reinforcing materials for concrete structures
• Current Stage: 6000 - International Standard under publication
• Start Date: 03-Apr-2026
• Completion Date: 02-May-2026

Overview

ISO 13180-1: Fibre-reinforced cementitious composites (FRCCs) - Direct tensile test method - Part 1: Strain hardening FRCCs is an important international standard published by ISO. The document specifies a robust test method for directly evaluating the tensile resistance of strain-hardening fibre-reinforced cementitious composites (FRCCs) through uniaxial tensile testing. This method yields reliable tensile parameters from a tensile stress-strain curve, including first cracking strength, post-cracking strength, strain capacity, toughness, and the number of cracks within a defined gauge length.

The standard is specially designed for FRCCs exhibiting strain-hardening behaviour, such as high-performance fibre-reinforced cementitious composites (HPFRCCs), engineered cementitious composites (ECCs), and ultra-high-performance fibre-reinforced concretes (UHPFRCs). Materials that exhibit strain-softening behaviour are outside of the standard's scope.

Key Topics

• Direct tensile testing of FRCCs: The standard outlines the process for subjecting FRCC specimens to uniaxial tension, eliminating parasitic bending moments and ensuring reliable data reporting.
• Test specimen requirements: Detailed guidance is provided regarding specimen geometry, minimum gauge length, width, thickness, and cross-sectional area. Both cast and cut specimens are permitted if they meet the requirements for ensuring accurate results.
• Testing procedure: The procedure includes specimen preparation, installation, equipment setup with adequate gripping devices, and displacement-controlled tensile testing at defined strain rates.
• Stress-strain curve analysis: The method determines and analyzes key tensile properties such as:
  • First cracking strength
  • First cracking strain
  • Tensile strength after cracking
  • Strain capacity at post-cracking
  • Toughness (area under the stress-strain curve)
  • Number of microcracks within gauge length
• Assessment and reporting: The standard provides requirements for reporting all relevant test parameters, specimen description, materials, and any deviations from the procedure.

Applications

The ISO 13180-1 tensile test method is essential for:

• Quality control and material development: Manufacturers and researchers can assess and compare the strain-hardening properties of FRCCs with consistent, valid metrics.
• Structural engineering design: Structural engineers, designers, and contractors utilize standardized tensile data for FRCCs in civil infrastructure and building applications, especially where enhanced ductility, energy absorption, and fracture toughness are desired.
• Durability and longevity analysis: By quantifying the microcracking behaviour and strain hardening of FRCCs, the standard supports advances in durability and lifespan of reinforced concrete structures, particularly under demanding loads such as earthquakes, impacts, or blasts.
• Certification and specification compliance: The standard helps ensure compliance with internationally recognized test procedures, reducing ambiguity in material selection and procurement processes.

Related Standards

ISO 13180-1 complements several ISO standards dedicated to test methods for fibre-reinforced cementitious composites (FRCCs), including:

• ISO 19044: Test methods for load-displacement curve using notched specimens in FRCCs.
• ISO 21022: Test method for load-deflection curves using circular plates.
• ISO 21914: Test methods for bending moment-curvature curve by four-point bending test.

These standards collectively provide a comprehensive framework for physical and mechanical characterization of cementitious composites reinforced with fibres, advancing research, innovation, and safe application in construction industries worldwide.

Keywords: ISO 13180-1, fibre-reinforced cementitious composites, FRCC, strain-hardening, tensile test, direct tensile strength, stress-strain curve, HPFRCC, ECC, UHPFRC, cementitious materials, tensile properties, civil infrastructure testing.

Standards Content (Sample)

DRAFT
International
Standard
ISO/DIS 13180-1
ISO/TC 71/SC 6
A guideline on direct tension
Secretariat: JISC
test method for fibre-reinforced
Voting begins on:
cementitious composites (FRCCs) —
2025-08-12
Part 1:
Voting terminates on:
2025-11-04
Strain-hardening FRCC
ICS: 91.100.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
This document is circulated as received from the committee secretariat.
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 13180-1:2025(en)
DRAFT
ISO/DIS 13180-1:2025(en)
International
Standard
ISO/DIS 13180-1
ISO/TC 71/SC 6
A guideline on direct tension
Secretariat: JISC
test method for fibre-reinforced
Voting begins on:
cementitious composites (FRCCs) —
Part 1:
Voting terminates on:
Strain-hardening FRCC
ICS: 91.100.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
This document is circulated as received from the committee secretariat. BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 13180-1:2025(en)
ii
ISO/DIS 13180-1:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Test specimens . 2
5.1 Geometry .2
5.2 Fabrication of specimens .3
6 Test equipment . 3
6.1 Testing machine .4
6.2 Testing setup .4
6.3 Measurement devices .4
7 Test procedure . 4
7.1 Preparation of specimens .4
7.2 Installation of specimens .4
7.3 Test procedure .4
8 Evaluation of test results . 4
8.1 Tensile stress versus strain curve.4
8.2 Stress .4
8.3 Strain .5
8.4 First cracking point .5
8.5 Number of cracks .5
9 Assessment of tensile test . 5
10 Test report . 5
Bibliography . 6

iii
ISO/DIS 13180-1:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC71, Concrete, Reinforced Concrete and Pres-
stressed concrete, Subcommittee SC6, Non-traditional reinforcing materials for concrete structures, working
group WG2, Testing methods for fiber-reinforced cementitious composites.

iv
ISO/DIS 13180-1:2025(en)
Introduction
Strain hardening FRCCs have demonstrated their superior tensile strength, ductility, energy absorption
capacity and fracture toughness than normal concrete. Strain hardening FRCCs include high performance
[1,2] [3,4]
fibre reinforced cementitious composites (HPFRCCs), engineered cementitious composites (ECCs) and
[5-9]
ultra-high-performance fibre-reinforced concretes (UHPFRCs). The superior mechanical and material
resistance of strain hardening FRCCs than normal concrete and strain softening FRCCs have motivated
[6,7,9,10]
structural engineers to apply them to civil infrastructure and buildings .
The use of strain hardening FRCCs is highly expected to enhance the mechanical resistance of infrastructure
and buildings especially under extreme loads including earthquakes, impacts and blasts. Moreover, the
smaller width of multiple micro cracks of strain hardening FRCCs than those of normal concrete and strain
softening FRCCs is expected to enhance the durability of structural members and eventually to lengthen the
service life of infrastructure and buildings.
However, the use of strain hardening FRCCs is still very limited even though there have been increasing
applications of those strain hardening FRCCs. The reasons for limited applications of strain hardening
FRCCs include no inter
...

International
Standard
First edition
Fibre-reinforced cementitious
composites (FRCCs) — Direct tensile
test method —
Part 1:
Strain hardening FRCCs
Composites à base de ciment renforcés par des fibres — Méthode
d'essai de traction directe —
Partie 1: Composites à base de ciment renforcés de fibres à
durcissement sous contrainte
PROOF/ÉPREUVE
Reference number
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Test specimens . 2
5.1 Geometry .2
5.2 Fabrication of specimens .4
6 Test equipment . 4
6.1 General .4
6.2 Testing machine . .4
6.3 Testing setup .4
6.4 Measurement devices .4
7 Test procedure . 4
7.1 Preparation of specimens .4
7.2 Installation of specimens .5
7.3 Test procedure .5
8 Evaluation of test results . 5
8.1 Tensile stress versus strain curve.5
8.2 Stress .5
8.3 Strain .5
8.4 First cracking point .5
8.5 Number of cracks .5
9 Assessment of the tensile test . 5
10 Test report . 5
Bibliography . 7
PROOF/ÉPREUVE
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-
stressed concrete, Subcommittee SC 6, Non-traditional reinforcing materials for concrete structures.
A list of all parts in the ISO 13180 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
PROOF/ÉPREUVE
iv
Introduction
Strain hardening fibre-reinforced cementitious composites (FRCCs) have been demonstrated to have
superior tensile strength, ductility, energy absorption capacity and fracture toughness compared to normal
concrete. Strain hardening FRCCs include high performance fibre-reinforced cementitious composites
[1,2] [3,4]
(HPFRCCs) , engineered cementitious composites (ECCs) and ultra-high-performance fibre-reinforced
[5-9]
concretes (UHPFRCs) . The superior mechanical and material resistance of strain hardening FRCCs
compared to normal concrete and strain softening FRCCs have motivated structural engineers to apply
[6,7,9,10]
them to civil infrastructure and buildings .
Strain hardening is defined as the material behaviour observed over a specified tensile strain range
following the initiation of cracking, in which the initial peak stress decreases or nonlinear behaviour begins,
and the tensile stress subsequently increases to a value exceeding the initial cracking strength. Within
the defined strain range, strain hardening is characterized by a monotonic increase in tensile stress with
increasing strain. Local stress fluctuations or oscillations are not considered to satisfy the definition of
strain hardening unless they are explicitly permitted and technically justified. This definition is intended to
ensure an objective interpretation of test results and to enable clear identification of the peak tensile stress
associated with strain-hardening behaviour.
The use of strain hardening FRCCs is highly expected to enhance the mechanical resistance of infrastructure
and buildings especially under extreme loads including earthquakes, impacts and blasts. Moreover, the
smaller width of multiple micro cracks of strain hardening FRCCs compared to that of normal concrete
and strain softening FRCCs is expected to enhance the durability of structural members and eventually to
lengthen the service life of infrastructure and buildings.
However, the use of strain hardening FRCCs is still very limited even though there have been increasing
applications of those strain hardening FRCCs. The reasons for limited applications of strain hardening
FRCCs are the absence of International Standard test methods and design codes in addition to the high cost
[10]
of strain hardening FRCCs versus normal concrete . Current ISO standards such as ISO 19044, ISO 21022
and ISO 21914 are applicable for evaluating the uniaxial and biaxial flexural behaviour of FRCCs, but not the
uniaxial tensile response of strain hardening FRCCs.
Although many research papers have reported direct tensile stress versus strain response of various
HPFRCCs, ECCs and UHPFRCs, the responses were obtained from the specimens with different geometry
[4,7]
and different test setups . Consequently, it is difficult to quantitatively compare the tensile resistance of
various strain hardening FRCCs for the purpose of design consideration without standard test methods.
The tes
...

ISO/DISPRF 13180-1:2025(en)
ISO/TC 71/SC 6/WG 2
Secretariat: JISC
Date: 2025-10-172026-03-05
A guideline on direct tension test method for fibreFibre-
reinforced cementitious composites (FRCCs) — — Direct tensile
test method —
Part 1:
Strain -hardening FRCC
FRCCs
Composites à base de ciment renforcés par des fibres — Méthode d'essai de traction directe —
Partie 1: Composites à base de ciment renforcés de fibres à durcissement sous contrainte
PROOF
ISO/DIS 13180-1:2025(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
iii
ISO #####-#:####(X)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Test specimens . 3
5.1 Geometry . 3
5.2 Fabrication of specimens . 4
6 Test equipment . 4
6.1 General . 4
6.2 Testing machine . 4
6.3 Testing setup . 4
6.4 Measurement devices . 4
7 Test procedure . 5
7.1 Preparation of specimens . 5
7.2 Installation of specimens . 5
7.3 Test procedure . 5
8 Evaluation of test results . 5
8.1 Tensile stress versus strain curve . 5
8.2 Stress . 5
8.3 Strain . 5
8.4 First cracking point . 5
8.5 Number of cracks . 5
9 Assessment of the tensile test . 6
10 Test report . 6
Bibliography . 7

iv © ISO #### – All rights reserved

ISO/DIS 13180-1:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of
(a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice
of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-
stressed concrete, Subcommittee SC 6, Non-traditional reinforcing materials for concrete structures.
A list of all parts in the ISO 13180 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
ISO #####-#:####(X)
Introduction
Strain hardening fibre-reinforced cementitious composites (FRCCs) have been demonstrated to have
superior tensile strength, ductility, energy absorption capacity and fracture toughness compared to
normal concrete. Strain hardening FRCCs include high performance fibre-reinforced cementitious
[1],[2] [1,2] [3] [3,4],[4]
composites (HPFRCCs) ), , engineered cementitious composites (ECCs) ) and ultra-high-
[5]-[9] [5-9]
performance fibre-reinforced concretes (UHPFRCs) ). . The superior mechanical and material
resistance of strain hardening FRCCs compared to normal concrete and strain softening FRCCs have
[6],[7],[9],[10][6,7,9,10]
motivated structural engineers to apply them to civil infrastructure and buildings .
Strain hardening is defined as the material behaviorbehaviour observed over a specified tensile strain
range following the initiation of cracking, in which the initial peak stress decreases or nonlinear
behaviorbehaviour begins, and the tensile stress subsequently increases to a value exceeding the initial
cracking strength. Within the defined strain range, strain hardening shall beis characterized by a
monotonic increase in tensile stress with increasing strain. Local stress fluctuations or oscillations
shallare not be considered to satisfy the definition of strain hardening unless they are explicitly permitted
and technically justified. This definition is intended to ensure an objective interpretation of test results
and to enable clear identification of the peak tensile stress associated with strain-hardening
behaviorbehaviour.
The use of strain hardening FRCCs is highly expected to enhance the mechanical resistance of
infrastructure and buildings especially under extreme loads including earthquakes, impacts and blasts.
Moreover, the smaller width of multiple micro cracks of strain hardening FRCCs compared to that of
normal concrete and strain softening FRCCs is expected to enhance the durability of structural members
and eventually to lengthen the service life of infrastructure and buildings.
However, the use of strain hardening FRCCs is still very limited even though there have been increasing
applications of those strain hardening FRCCs. The reasons for limited applications of strain hardening
FRCCs are the absence of International Standard test methods and design codes in addition to the high
[10] [10]
cost of strain hardening FRCCs versus normal concrete . . Current ISO standards such asISOas
ISO 19044, ISO 21022 and ISO 21914 are applicable for evaluating the uniaxial and biaxial flexural
behaviour of FRCCs, but not the uniaxial tensile response of strain hardening FRCCs.
Although many research papers have reported direct tensile stress versus strain response of various
HPFRCCs, ECCs and UHPFRCs, the responses were obtained from the specimens with different geometry
[4],[7] [4,7]
and different test setups . . Consequently, it is difficult to quantitatively compare the tensile
resistance of various strain hardening FRCCs for the purpose of design consideration without standard
test methods.
The test method defined in this document specifies minimum requirements for specimen geometry and
test setups of strain hardening FRCCs under direct tension. The reported test parameters of various strain
hardening FRCCs using this document are expected to be classified into several categories of strain
hardening FRCCs for structural engineers, contractors, etc. The tensile parameters are determined from
the measured tensile stress versus strain curve obtained by testing a specimen under uniaxial tension
without any parasitic bending moment during the test.
vi © ISO #### – All rights reserved

ISO/DISPRF 13180-1:20252026(en)
Direct tensile test method for fibre
vii
DRAFT International Standard ISO/DIS 13180-1:2025(en)

Fibre-reinforced cementitious composites (FRCCs) – Requirements
and guidelines – — Direct tensile test method —
Part 1:
Strain hardening FRCCs
1 Scope
This document specifies a test method for evaluating direct tensile resistance of strain hardening fibre-
reinforced cementitious composites (FRCCs) using tensile parameters.
This test method provides tensile stress versus strain curve, first cracking strength, post cracking strength,
strain capacity (strai
...