ISO 11618:2015

Buildings and Civil Engineering Works - Sealants - Classification and requirements for pedestrian walkway sealants

ISO 11618:2015 applies to sealants used for pedestrian walkways, public areas, movement joints between concrete slabs, areas with pedestrian load, areas which are used with trolleys, parking garages, walkable floors, balconies, terraces, and warehouses. This International Standard specifies the types and classes of elastic sealants used in building construction pedestrian walkways according to their performance characteristics. Sealant may be either non-sag or self-leveling as declared by the manufacturer. Areas of application are floor joints which have been designed. Chemical containment, cold applied joint sealants for concrete pavements to be used in roads, airfields, and sewage treatment plants are excluded. Local regulations may be required in addition to this International Standard based on local laws and codes.

Bâtiments et travaux d'ingénierie civile —- Mastics — Classification et exigences pour les mastics des voies pédestres

General Information

• Status: Published
• Publication Date: 16-Aug-2015
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: ISO/TC 59/SC 8 - Sealants
• Drafting Committee: ISO/TC 59/SC 8 - Sealants
• Current Stage: 9093 - International Standard confirmed
• Start Date: 10-May-2021
• Completion Date: 13-Dec-2025

Overview

ISO 11618:2015 defines classification and performance requirements for pedestrian walkway sealants used in buildings and civil engineering works. It covers elastic, non-sag or self‑leveling sealants for floor joints designed to carry pedestrian loads (walkways, plazas, parking garages, balconies, terraces, warehouses, trolley areas). The standard excludes chemical containment and cold‑applied joint sealants for roads, airfields and sewage treatment plants, and notes that local codes may impose additional requirements.

Key topics and technical requirements

• Sealant classes (movement capability): ±25%, ±20%, and ±12.5% movement categories determine which joints a sealant can accommodate.
• Subclasses:
  • Modulus: Low‑modulus (LM) vs high‑modulus (HM) based on secant tensile modulus thresholds (e.g., 0.4 N/mm² at +23 °C and 0.6 N/mm² at −20 °C).
  • Application environment: EXT (exterior; also suitable for interior) vs INT (interior only).
  • Elastic recovery: Class 12.5 requires ≥40% recovery; class 20/25 have higher recovery criteria (e.g., ≥60–70%).
• Performance tests (normative references): tensile properties (ISO 8339, ISO 8340), elastic recovery (ISO 7389), adhesion/cohesion (ISO 9047, ISO 10590), tear resistance (ISO 19863), volume change (ISO 10563), cure rate (ISO 19861), and durability cycling (ISO 19862).
• Conditioning protocols: Method A - 28 days at (23 ± 2) °C and (50 ± 10)% RH; Method B - Method A plus heat/water accelerated cycles (70 °C oven and water immersion sequences).
• Failure criteria: adhesion or cohesion loss >2 mm or visible light transmission through extended durability specimens; tests are performed in triplicate with specified pass/fail rules.
• Designation format: ISO 11618 - TYPE - CLASS - SUBCLASS (e.g., ISO 11618 - 25HM - EXT 6 - M1p).

Practical applications and users

Who uses ISO 11618:2015:

• Architects, structural and civil engineers specifying floor and joint sealants for pedestrian areas
• Specification writers and building code consultants
• Sealant manufacturers and product development teams (for product classification and data sheets)
• Independent test laboratories and quality control teams performing conformity testing
• Contractors and facility managers selecting sealants for plazas, walkways, parking decks, balconies, terraces, and warehouses

Practical value:

• Ensures appropriate sealant selection for joint movement and environmental exposure
• Provides reproducible test methods and pass/fail criteria for product conformity
• Helps reduce failures (adhesion/cohesion, tearing, volume loss) in pedestrian flooring joints

Related standards

Relevant referenced standards include ISO 6927, ISO 7389, ISO 8339, ISO 8340, ISO 9047, ISO 10563, ISO 10590, ISO 13640, ISO 19861, ISO 19862, ISO 19863, and test guidance for natural stone staining potential (ISO 16938‑1 / ISO 16938‑2).

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11618
First edition
2015-08-15
Buildings and Civil Engineering
Works — Sealants — Classification
and requirements for pedestrian
walkway sealants
Construction immobilière — - Mastics — Classification et exigences
pour les mastics des voies pédestres
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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.
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
1  Scope . 1
2  Normative reference . 1
3  Terms and definitions . 1
4  Classification . 2
4.1 Classes . 2
4.2 Subclasses . 2
5 Requirements and test methods for interior and exterior sealants .3
6  Conditioning, test procedure and substrates . 4
6.1 Method A . 4
6.2 Method B . 4
7  Definition of failure . 5
7.1 General . 5
7.2 Additional note on failure . 5
7.3 Durability specimens . 5
8 Designation . 5
9 Test report . 6
Annex A (normative) Modification to ISO 10590 . 7
Bibliography . 8
Foreword
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electrotechnical standardization.
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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
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For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 59, Buildings and civil engineering works,
Subcommittee SC 8, Sealants.
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 11618:2015(E)
Buildings and Civil Engineering Works — Sealants —
Classification and requirements for pedestrian walkway
sealants
1  Scope
This International Standard applies to sealants used for pedestrian walkways, public areas, movement
joints between concrete slabs, areas with pedestrian load, areas which are used with trolleys, parking
garages, walkable floors, balconies, terraces, and warehouses.
This International Standard specifies the types and classes of elastic sealants used in building
construction pedestrian walkways according to their performance characteristics. Sealant may be
either non-sag or self-leveling as declared by the manufacturer. Areas of application are floor joints
which have been designed.
Chemical containment, cold applied joint sealants for concrete pavements to be used in roads, airfields,
and sewage treatment plants are excluded.
Local regulations may be required in addition to this International Standard based on local laws and
codes.
2  Normative reference
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 6927, Buildings and civil engineering works — Sealants — Vocabulary
ISO 7389, Building construction — Jointing products — Determination of elastic recovery of sealants
ISO 8339, Building construction — Sealants — Determination of tensile properties (Extension to break)
ISO 8340, Building construction — Sealants — Determination of tensile properties at maintained extension
ISO 9047, Building construction — Jointing products — Determination of adhesion/cohesion properties of
sealants at variable temperatures
ISO 10563, Building construction — Sealants — Determination of change in mass and volume
ISO 10590, Building construction — Sealants — Determination of tensile properties of sealants at
maintained extension after immersion in water
ISO 13640, Building construction — Jointing products — Specifications for test substrates
ISO 19861, Buildings and civil engineering works — Sealants — Determination of Curing rate behavior
ISO 19862, Buildings and civil engineering works — Sealants — Durability to extension compression cycling
under accelerated weathering
ISO 19863, Buildings and civil engineering works — Sealants — Determination of tear resistance
3  Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6927 apply.
4  Classification
4.1 Classes
Sealants are classified according to their ability to fulfill sealing functions in joints with movement
parameters as given in Table 1.
a
Table 1 — Sealant classes
Class Test amplitude %
25 ±25
20 ±20
12,5 ±12,5
a
For the correct interpretation and application of movement capability to the design of joints, relevant national
standards and advisory documents should be considered.
4.2  Subclasses
4.2.1 Sealants of class 25 and 20 are additionally sub-classified according to their secant tensile modulus.
Low modulus: code LM.
High modulus: code HM.
If the measured secant tensile modulus value at 100% strain exceeds the values specified below for
either or both temperatures, the sealant shall be classified as high modulus. Specified values (see
Table 2 and Table 3) are as follows:
2 °
0,4 N/mm at + 23 C (1)
2 °
0,6 N/mm at – 20C (2)
The secant modulus shall be the mean value of the three measured values. Round the mean value to one
decimal place.
2 2 2 2
EXAMPLE Measured values: 0,43 N/mm , 0,40 N/mm , and 0,46 N/mm . Mean value: 0,43 N/mm . Rep
...