ISO 24070-1:2021
(Main)Building and civil engineering sealants - Determination of cured thickness of one-component sealant - Part 1: Taper-shaped groove test method
Building and civil engineering sealants - Determination of cured thickness of one-component sealant - Part 1: Taper-shaped groove test method
This document specifies a method for the determination of the cured thickness depth of cure of one-component sealants using a taper-wedge-shaped groove test method.
Titre manque — Partie 1: Titre manque
General Information
- Status
- Published
- Publication Date
- 28-Apr-2021
- Technical Committee
- ISO/TC 59/SC 8 - Sealants
- Drafting Committee
- ISO/TC 59/SC 8/WG 22 - Cure properties
- Current Stage
- 6060 - International Standard published
- Start Date
- 29-Apr-2021
- Due Date
- 14-May-2022
- Completion Date
- 29-Apr-2021
Overview
ISO 24070-1:2021 specifies a laboratory method to determine the cured thickness (depth of cure) of one‑component building and civil engineering sealants using a taper‑shaped (taper‑wedge) groove test method. The procedure defines specimen preparation, apparatus, conditioning, direct and indirect measurement techniques, calculation of cured thickness and minimum reporting requirements. This standard is used for sealant testing, quality control and product development to quantify how deep a one‑component sealant cures under defined conditions.
Key topics and technical requirements
- Scope: Determines cured thickness of one‑component sealants using a taper‑wedge groove.
- Principle: Fill a taper‑shaped groove with sealant, tool flush, allow cure, then pull the cured strand until the first adhesion of uncured material is observed; measure the cured depth at that point.
- Standard test jig: Linear rectangular taper from 10 mm to 0 mm depth over a minimum length of 300 mm (standard length: 300 mm). Substrate must be dimensionally stable, non‑porous and anti‑adherent (e.g., PTFE or stainless steel with release agent).
- Apparatus and accuracy: Scraper wider than groove by ≥20 mm; thickness calliper with 0.1 mm reading accuracy; ruler with 1 mm accuracy.
- Conditioning and specimens: Condition jig and sealed product 16 h at (23 ± 2) °C and (50 ± 10) % RH. Prepare three specimens, fill from the deepest end, and tool flush.
- Cure and measurement: Cure under defined climate (typically 23 ± 2 °C, 50 ± 10 % RH) for agreed times (commonly 24, 48, 72 h or longer). Two measurement options:
- Direct: Measure cured layer thickness with calliper after removing uncured paste.
- Indirect (calculation): Measure distance W from the top of the groove to the point where uncured adhesion is first observed and calculate cured thickness using the linear taper relation: cured thickness = (d × W) / L (where d = max groove depth, L = groove length).
- Test report: Must include lab ID, ISO reference, sealant name/type/batch, groove dimensions, climate conditions, cured thickness with cure duration, measurement method and any deviations.
Applications and users
- Manufacturers for product development, formulation optimization and batch quality control.
- Independent test laboratories for performance verification and certification.
- Specifiers, architects and contractors to compare sealant cure depth for application suitability (joint geometry, minimum depth of cure).
- Regulatory and procurement bodies requiring documented test evidence of cure performance.
- R&D teams assessing cure kinetics, tooling procedures and effects of climate on cure depth.
Related standards
- ISO 24070 series (other parts if applicable)
- ISO 6927 - vocabulary for building and civil engineering sealants
Keywords: ISO 24070-1, cured thickness, one-component sealant, depth of cure, taper-shaped groove test, sealant testing, building and civil engineering sealants.
Frequently Asked Questions
ISO 24070-1:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Building and civil engineering sealants - Determination of cured thickness of one-component sealant - Part 1: Taper-shaped groove test method". This standard covers: This document specifies a method for the determination of the cured thickness depth of cure of one-component sealants using a taper-wedge-shaped groove test method.
This document specifies a method for the determination of the cured thickness depth of cure of one-component sealants using a taper-wedge-shaped groove test method.
ISO 24070-1:2021 is classified under the following ICS (International Classification for Standards) categories: 91.100.50 - Binders. Sealing materials. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 24070-1:2021 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 ISO
STANDARD 24070-1
First edition
2021-04
Building and civil engineering
sealants — Determination of cured
thickness of one-component sealant —
Part 1:
Taper-shaped groove test method
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2021 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus and materials. 2
5.1 Substrate with taper-shaped groove . 2
5.2 Scraper . 2
5.3 Thickness calliper . 2
5.4 Ruler . 3
6 Conditioning . 3
7 Preparation of test specimen . 3
8 Test procedure . 3
8.1 General . 3
8.2 Direct measurement . 3
8.3 Indirect measurement . 3
9 Calculation and expression of the test result . 4
9.1 General . 4
9.2 Direct measurement . 4
9.3 Indirect determination (calculation) . 4
10 Test report . 4
Foreword
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This document was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works,
Subcommittee SC 8, Sealants.
A list of all parts in the ISO 24070 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
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iv © ISO 2021 – All rights reserved
INTERNATIONAL STANDARD ISO 24070-1:2021(E)
Building and civil engineering sealants — Determination of
cured thickness of one-component sealant —
Part 1:
Taper-shaped groove test method
1 Scope
This document specifies a method for the determination of the cured thickness depth of cure of one-
component sealants using a taper-wedge-shaped groove test method.
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 appli
...
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