Geosynthetics - Static puncture test (CBR test) (ISO/FDIS 12236:2026)

ISO 12236:2006 specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics.
The test is normally carried out on dry specimens conditioned in the specified atmosphere. The test is applicable to most types of products, but not to materials with apertures greater than 10 mm.

Geokunststoffe - Stempeldurchdrückversuch (CBR-Versuch) (ISO/FDIS 12236:2026)

Dieses Dokument legt ein Verfahren zur Bestimmung des Durchdrückwiderstandes durch Messung der benötigten Kraft beim Durchdrücken eines stumpfen Stempels durch Geokunststoffe fest.
Die Prüfung wird üblicherweise mit trockenen Messproben durchgeführt, die in dem festgelegten Klima konditioniert wurden.
Die Prüfung ist auf die meisten Produkte aus Geokunststoffen anwendbar, gilt jedoch nicht für Produkte mit Öffnungen größer als 10 mm.

Géosynthétiques - Essai de poinçonnement statique (essai CBR) (ISO/FDIS 12236:2026)

L'ISO 12236:2006 spécifie une méthode de détermination de la résistance au poinçonnement des géotextiles et produits apparentés par mesurage de la force requise pour enfoncer un poinçon plat au travers du géotextile.
L'essai est normalement réalisé sur des éprouvettes sèches conditionnées dans l'atmosphère spécifiée.
L'essai s'applique à la plupart des produits mais n'est pas applicable aux matériaux présentant des ouvertures supérieures à 10 mm.

Geosintetike – Statični prebojni preskus z žigom (preskus CBR) (ISO/FDIS 12236:2026)

General Information

Status
Not Published
Publication Date
29-Jun-2026
ICS
59.080.70 - Geotextiles
Technical Committee
CEN/TC 189 - Geotextiles and geotextile-related products
Drafting Committee
CEN/TC 189 - Geotextiles and geotextile-related products
Current Stage
6055 - CEN Ratification completed (DOR) - Publishing
Start Date
30-Apr-2026
Completion Date
30-Apr-2026
Ref Project
kSIST FprEN ISO 12236:2026 - Geosynthetics - Static puncture test (CBR test) (ISO/FDIS 12236:2026)

Relations

Consolidated By
ISO 12236 - Geosynthetics — Static puncture test (CBR test)
Effective Date
12-Feb-2026
Revises
EN ISO 12236:2006 - Geosynthetics - Static puncture test (CBR test) (ISO 12236:2006)
Effective Date
22-Jan-2023

Overview

FprEN ISO 12236: Geosynthetics - Static Puncture Test (CBR Test) is a European and international draft standard developed by CEN and ISO. This standard outlines a reliable method for determining the puncture resistance of geosynthetics by measuring the force required to push a flat-ended plunger through the material. The method is widely known as the California Bearing Ratio (CBR) static puncture test and is key for assessing the mechanical strength of geosynthetic products.

The test is typically performed on dry geosynthetic specimens, appropriately conditioned in a controlled atmosphere, and applies to most geotextiles and related products. However, it is not suitable for materials with apertures larger than 10 mm. The standard is essential for quality control, product comparison, and verifying compliance with engineering specifications, making it highly relevant for industries such as civil engineering, environmental protection, and construction.

Key Topics

  • Puncture Resistance Measurement: Determines the mechanical strength of geosynthetics by assessing their resistance to static puncture using a flat-ended plunger. The test provides crucial data for the selection of materials suitable for demanding applications.
  • Standardized Test Conditions: Specifies the environmental conditioning (temperature and humidity) under which the specimens are tested, ensuring repeatability and comparability of test results.
  • Specimen Preparation: Details how to select and prepare test samples, referencing ISO 9862 for sampling methods and ISO 554 for standard atmospheric conditions.
  • Test Procedure:
    • Clamping the specimen between two steel rings
    • Advancing a standardized plunger at a fixed displacement rate
    • Recording force and displacement until material failure
  • Result Reporting: Includes recording the maximum (push-through) force, corresponding displacement, and presenting a force-displacement graph. The report must also document test conditions and any observed material slippage or failure.

Applications

The static puncture test is extensively used in multiple industries:

  • Civil Engineering and Construction: Ensures geosynthetics used in roadways, embankments, and retaining structures meet puncture resistance requirements for stability and long-term performance.
  • Environmental Protection: Evaluates geomembranes and geotextiles used in landfill liners and containment barriers, verifying their integrity against static loading and potential punctures.
  • Quality Assurance and R&D: Enables manufacturers and researchers to assess new formulations, compare product performance, and ensure compliance with design specifications and regulatory standards.
  • Site Identification and Traceability: Facilitates on-site product identification and traceability through standardized reporting in line with ISO 10320.
  • Procurement and Specification Compliance: Assists engineers and purchasers in choosing appropriate geosynthetic products based on validated puncture resistance data.

Related Standards

  • ISO 554: Specifies standard atmospheres for conditioning and testing, essential for ensuring consistent test environments.
  • ISO 7500-1: Details calibration and verification requirements for uniaxial testing machines, which are critical for accurate force measurement.
  • ISO 9862: Outlines procedures for sampling and preparation of geosynthetic test specimens, promoting reliable and representative test results.
  • ISO 10320: Provides protocols for on-site identification and documentation of geosynthetics, supporting traceability throughout the supply chain.

Practical Value

Adherence to FprEN ISO 12236 helps laboratories, manufacturers, and specifiers ensure the robust performance of geosynthetics under static puncture loads. The standard’s rigorous procedure fosters confidence in material selection for critical infrastructure, environmental safety, and construction resilience. By providing a clear, reproducible test method, FprEN ISO 12236 supports quality control, regulatory compliance, and international trade in geosynthetic products.

Keywords: geosynthetics, static puncture test, CBR, ISO 12236, puncture resistance, standard atmospheres, geotextiles, mechanical strength testing, materials testing standards, construction materials compliance.

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Frequently Asked Questions

FprEN ISO 12236 is a draft published by the European Committee for Standardization (CEN). Its full title is "Geosynthetics - Static puncture test (CBR test) (ISO/FDIS 12236:2026)". This standard covers: ISO 12236:2006 specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics. The test is normally carried out on dry specimens conditioned in the specified atmosphere. The test is applicable to most types of products, but not to materials with apertures greater than 10 mm.

ISO 12236:2006 specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics. The test is normally carried out on dry specimens conditioned in the specified atmosphere. The test is applicable to most types of products, but not to materials with apertures greater than 10 mm.

FprEN ISO 12236 is classified under the following ICS (International Classification for Standards) categories: 59.080.70 - Geotextiles. The ICS classification helps identify the subject area and facilitates finding related standards.

FprEN ISO 12236 has the following relationships with other standards: It is inter standard links to ISO 12236, EN ISO 12236:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

FprEN ISO 12236 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)


SLOVENSKI STANDARD
oSIST prEN ISO 12236:2024
01-julij-2024
Geosintetike – Statični prebojni preskus z žigom (preskus CBR) (ISO/DIS
12236:2024)
Geosynthetics - Static puncture test (CBR test) (ISO/DIS 12236:2024)
Geokunststoffe - Stempeldurchdrückversuch (CBR-Versuch) (ISO/DIS 12236:2024)
Géosynthétiques - Essai de poinçonnement statique (essai CBR) (ISO/DIS 12236:2024)
Ta slovenski standard je istoveten z: prEN ISO 12236
ICS:
59.080.70 Geotekstilije Geotextiles
oSIST prEN ISO 12236:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 12236:2024
oSIST prEN ISO 12236:2024
DRAFT
International
Standard
ISO/DIS 12236
ISO/TC 221
Geosynthetics — Static puncture
Secretariat: BSI
test (CBR test)
Voting begins on:
Géosynthétiques — Essai de poinçonnement statique (essai CBR)
2024-06-04
Voting terminates on:
ICS: 59.080.70
2024-08-27
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.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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 12236:2024(en)
oSIST prEN ISO 12236:2024
DRAFT
ISO/DIS 12236:2024(en)
International
Standard
ISO/DIS 12236
ISO/TC 221
Geosynthetics — Static puncture
Secretariat: BSI
test (CBR test)
Voting begins on:
Géosynthétiques — Essai de poinçonnement statique (essai CBR)
ICS: 59.080.70 Voting terminates on:
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.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
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
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 12236:2024(en)
ii
oSIST prEN ISO 12236:2024
ISO/DIS 12236:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Specimens. 4
7 Conditioning . 4
8 Procedure . 5
9 Recording, calculation and expression of results . 5
9.1 Recording of data .5
9.2 Calculation and expression of results .5
10 Test report . 6

iii
oSIST prEN ISO 12236:2024
ISO/DIS 12236:2024(en)
Foreword
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