Classification for discrete polymer fibre for fibre-reinforced cementitious composites

This document specifies discrete polymer fibres with a nominal length of 80 mm or less mixed in concrete and mortar. The quality and performance specified in this standard are the raw material resin of discrete polymer fibres, nominal fibre diameter and its allowable range, nominal fibre length and its allowable range, fibre cross-sectional shape, fibre longitudinal shape, grade of fibre strength, and grade of fibre elasticity. There are a wide variety of discrete polymer fibres used to reinforce cement composites. Currently, in discrete polymer fibres products distributed as industrial products, there are many types of raw material resins and various shapes. In addition, the applications that have been used in practical fields are so wide, from structural applications that require high mechanical reinforcement performance to crack control and peeling prevention that are easier to use. Therefore, to select an appropriate product from a wide variety of discrete polymer fibres, the characteristics of discrete polymer fibres need to be classified and revealed based on a unified evaluation method. This document allows manufacturers to ensure the performance of discrete polymer fibres are in accordance with an adequate standard in response to various user requests.

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General Information

Status
Published
Publication Date
25-Jan-2026
Current Stage
6060 - International Standard published
Start Date
26-Jan-2026
Due Date
17-May-2026
Completion Date
26-Jan-2026

Overview

ISO 13182:2025 - "Classification for discrete polymer fibre for fibre‑reinforced cementitious composites" establishes a unified classification system for discrete polymer fibres used in concrete and mortar (FRCC). The standard covers fibres with a nominal length of 80 mm or less and defines how to describe raw material, geometry, mechanical grades and tolerances so manufacturers, specifiers and testing laboratories can communicate fibre properties consistently.

Key topics and requirements

  • Scope: Discrete polymer fibres mixed in concrete and mortar; nominal length ≤ 80 mm.
  • Fibre types (raw materials): Standard symbols for common resins, e.g. Aramid (AR), Nylon (NY), Polyethylene (PE), Polypropylene (PP), Polyvinyl alcohol (PVA), Polyoxymethylene (POM).
  • Geometric classification:
    • Cross-sectional shape: Circular (C), Oval (O), Rectangular (R), Others (Z).
    • Nominal diameter classes and how diameter is defined (circle with same cross‑sectional area).
    • Longitudinal shape: Straight (S), Waved (W), Embossed (E), Split (SP), Others (Z).
    • Length classes: Defined ranges (e.g., <20 mm, 20–50 mm, ≥50 mm).
    • Bundling: Bundled (B) or not (N/A).
  • Quality and performance classification:
    • Tolerance classes for nominal diameter and length (±5 % to ±20 % ranges).
    • Tensile strength grades (F1–F4) with defined ranges.
    • Initial modulus of elasticity grades (E1–E4) with defined ranges.
  • Test methods: Measurement and test methods for diameter, length, tensile strength and initial modulus are to be performed in accordance with ISO 23523.
  • Notation: A standardized notation method (e.g., PVA‑Ca(II)‑Sa(II)‑F2‑E2) lists material, diameter class, cross‑section, tolerance classes, length, longitudinal shape, tensile and elasticity grades.

Applications and users

  • Who uses ISO 13182:
    • Fibre manufacturers and product developers
    • Concrete and mortar producers specifying FRCC mixes
    • Structural and materials engineers selecting fibres for performance-based designs
    • Testing laboratories and certification bodies
    • Standards committees and procurement teams
  • Practical uses:
    • Selecting polymer fibres for crack control, impact resistance, peeling prevention and secondary reinforcement in concrete and mortar
    • Specifying consistent performance, geometry and tolerances for procurement and quality control
    • Enabling clear labelling and communication across supply chains and international markets

Related standards

  • ISO 23523 - Test methods for discrete polymer fibre for fibre‑reinforced cementitious composites (referenced for measurement and testing procedures).

Keywords: ISO 13182, discrete polymer fibre, fibre‑reinforced cementitious composites, FRCC, polymer fibres classification, fibre diameter, fibre length, tensile strength, modulus of elasticity, ISO 23523.

Standard

ISO 13182:2026 - Classification for discrete polymer fibre for fibre-reinforced cementitious composites Released:26. 01. 2026

English language
6 pages
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Frequently Asked Questions

ISO 13182:2026 is a standard published by the International Organization for Standardization (ISO). Its full title is "Classification for discrete polymer fibre for fibre-reinforced cementitious composites". This standard covers: This document specifies discrete polymer fibres with a nominal length of 80 mm or less mixed in concrete and mortar. The quality and performance specified in this standard are the raw material resin of discrete polymer fibres, nominal fibre diameter and its allowable range, nominal fibre length and its allowable range, fibre cross-sectional shape, fibre longitudinal shape, grade of fibre strength, and grade of fibre elasticity. There are a wide variety of discrete polymer fibres used to reinforce cement composites. Currently, in discrete polymer fibres products distributed as industrial products, there are many types of raw material resins and various shapes. In addition, the applications that have been used in practical fields are so wide, from structural applications that require high mechanical reinforcement performance to crack control and peeling prevention that are easier to use. Therefore, to select an appropriate product from a wide variety of discrete polymer fibres, the characteristics of discrete polymer fibres need to be classified and revealed based on a unified evaluation method. This document allows manufacturers to ensure the performance of discrete polymer fibres are in accordance with an adequate standard in response to various user requests.

This document specifies discrete polymer fibres with a nominal length of 80 mm or less mixed in concrete and mortar. The quality and performance specified in this standard are the raw material resin of discrete polymer fibres, nominal fibre diameter and its allowable range, nominal fibre length and its allowable range, fibre cross-sectional shape, fibre longitudinal shape, grade of fibre strength, and grade of fibre elasticity. There are a wide variety of discrete polymer fibres used to reinforce cement composites. Currently, in discrete polymer fibres products distributed as industrial products, there are many types of raw material resins and various shapes. In addition, the applications that have been used in practical fields are so wide, from structural applications that require high mechanical reinforcement performance to crack control and peeling prevention that are easier to use. Therefore, to select an appropriate product from a wide variety of discrete polymer fibres, the characteristics of discrete polymer fibres need to be classified and revealed based on a unified evaluation method. This document allows manufacturers to ensure the performance of discrete polymer fibres are in accordance with an adequate standard in response to various user requests.

ISO 13182:2026 is classified under the following ICS (International Classification for Standards) categories: 83.120 - Reinforced plastics; 91.100.40 - Products in fibre-reinforced cement. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 13182:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


International
Standard
ISO 13182
First edition
Classification for discrete
2026-01
polymer fibre for fibre-reinforced
cementitious composites
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 1
5 Classification . 2
5.1 General .2
5.2 Fibre type .2
5.3 Cross-sectional shape .2
5.4 Longitudinal Shape .3
5.5 Bundle .4
5.6 Classification of the quality and performance .4
6 Test methods for fibre parameters .5
6.1 Fibre diameter .5
6.2 Fibre length .5
6.3 Tensile strength .5
6.4 Initial Modulus of Elasticity .5
7 Notation of the Fibre Classification .5
7.1 Notation method .5
7.2 Notation items . .5

iii
Foreword
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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)
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rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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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.
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.

iv
International Standard ISO 13182:2026(en)
Classification for discrete polymer fibre for fibre-reinforced
cementitious composites
...

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