ISO 9862:2023/Amd 1:2026

• Status: Published
• Publication Date: 17-Sep-2026
• ICS: 59.080.70 - Geotextiles
• Technical Committee: ISO/TC 221 - Geosynthetics
• Drafting Committee: ISO/TC 221 - Geosynthetics
• Current Stage: 6060 - International Standard published
• Start Date: 18-Sep-2026
• Due Date: 03-Mar-2028
• Completion Date: 18-Sep-2026

• Consolidates: EN ISO 9862:2023/A1:2026 - Geosynthetics - Sampling and preparation of test specimens - Amendment 1: Sample preparation for geosynthetic cementitious composites (GCCs) (ISO 9862:2023/Amd 1:2026)
• Effective Date: 12-Feb-2026
• Consolidates: ISO/DTS 12913-4 - Acoustics — Soundscape — Part 4: Design and intervention
• Effective Date: 08-Mar-2025
• Amends: ISO 9862:2023 - Geosynthetics — Sampling and preparation of test specimens
• Effective Date: 08-Mar-2025

ISO 9862:2023/Amd.1:2026 is an ISO amendment to Geosynthetics - Sampling and preparation of test specimens. It adds sample-preparation rules for geosynthetic cementitious composites (GCCs), mainly for laboratories, manufacturers, and others preparing specimens for testing in hydrated (wet) or cured state.

What does ISO 9862:2023/Amd.1:2026 specify?

ISO 9862:2023/Amd.1:2026 specifies additional preparation rules for GCC specimens within the ISO 9862 framework. The amendment is focused on how to cut and prepare specimens intended for hydrated or cured testing, so users can prepare comparable test pieces before measurement or verification.

The amendment is organized as changes to Clause 2 on normative references, Clause 3 on terms and definitions, Clause 4.1.2 on cutting, Clause 4.2 on preparation of specimens, and Figure 1, which illustrates the cutting layout.

What are the key requirements of ISO 9862:2023/Amd.1:2026?

ISO 9862:2023/Amd.1:2026 adds a small set of practical requirements that matter at the sample-preparation stage. In practice, these rules tell the user what to cut, how large to leave the sample, and which preparation practice to follow for hydrated or cured GCC specimens.

Cutting and oversizing

Clause 4.1.2.6 states that GCC specimens intended for hydrated or cured testing are to be cut from uncured samples. Those uncured samples are required to be oversized by not less than 25 mm along each side of the perimeter compared with the final specimen size.

This matters because the extra margin gives room for trimming and handling after hydration or curing, which helps avoid edge effects and prepares a specimen that better represents the material under test.

Preparation of hydrated and cured specimens

Clause 4.2.11 requires that preparation of hydrated and cured GCC specimens conform to ASTM D8030/D8030M-24. In practice, users preparing these specimens need to follow that referenced practice rather than inventing a local method.

This is important for test consistency between suppliers, laboratories, and purchasers, because the preparation route affects the condition of the specimen before testing.

Defined condition terms

Clause 3 adds terms for the condition of a GCC specimen: cured, uncured, and hydration. These terms give a common way to describe whether the material has been exposed to water and allowed to set before testing.

That distinction matters because preparation depends on the state of the material - a specimen cut before hydration is handled differently from one that has already cured.

Cutting layout guidance

Figure 1 shows the coupon/form template, the 25 mm perimeter within that template, and the test specimen templates marked within that perimeter. This gives a visual guide for where the final specimen boundaries sit relative to the larger starting piece.

For users, the figure helps prevent cutting too close to the edge of the original sample, which could otherwise affect the test result.

What terms does ISO 9862:2023/Amd.1:2026 define?

• GCCs - geosynthetic cementitious composites, the material family covered by this amendment.
• cured - the state of a GCC after initial hydration of the cementitious material and setting.
• uncured - the state of a GCC before it has been hydrated.
• hydration - exposure of the GCC to water in specific conditions for a specific period of time.
• coupon/form template - the larger template shown in Figure 1 from which the specimen layout is taken.
• test specimen template - the marked specimen shape shown within the 25 mm perimeter in Figure 1.

Who uses ISO 9862:2023/Amd.1:2026?

ISO 9862:2023/Amd.1:2026 is used by laboratories, testing personnel, geosynthetics manufacturers, and quality teams that prepare GCC samples for testing. It is also relevant to buyers and specification writers who need a defined preparation route for hydrated or cured GCC specimens.

In practice, these users apply the amendment when cutting samples, setting up specimen dimensions, and deciding which preparation practice to follow before testing or comparison.

What changed in ISO 9862:2023/Amd.1:2026 from the previous edition?

ISO 9862:2023/Amd.1:2026 adds GCC-specific sample-preparation rules to ISO 9862:2023. The amendment introduces a new normative reference to ASTM D8030/D8030M-24, adds the terms cured, uncured, and hydration, requires GCC specimens for hydrated or cured testing to be cut from uncured samples oversized by at least 25 mm on each side, and requires preparation of hydrated and cured GCC specimens to conform to ASTM D8030/D8030M-24.

Which standards are used with ISO 9862:2023/Amd.1:2026?

Clause 2 adds ASTM D8030/D8030M-24, Standard Practice for Sample Preparation for GCCM. ISO 9862:2023/Amd.1:2026 uses that practice as the referenced method for preparing hydrated and cured GCC specimens.

What does the ISO 9862:2023/Amd.1:2026 document contain?

ISO 9862:2023/Amd.1:2026 contains a short set of amendments rather than a full standalone method. The document adds a normative reference, defines the GCC-related condition terms, and sets the oversize cutting requirement for specimens to be tested in hydrated or cured state.

It also includes Figure 1, which shows the coupon/form template, the 25 mm perimeter, and the location of the test specimen templates. That figure supports the cutting step by showing how to lay out specimen boundaries before preparation.

International
Standard
ISO 9862
Third edition
Geosynthetics — Sampling and
2023-11
preparation of test specimens
AMENDMENT 1
AMENDMENT 1: Sample preparation
2026-09
for geosynthetic cementitious
composites (GCCs)
Géosynthétiques — Échantillonnage et préparation des
éprouvettes
AMENDEMENT 1: Préparation d'échantillons pour les
géocomposites à base de ciment (GCC)
Reference number
ISO 9862:2023/Amd.1:2026(en) © ISO 2026

ISO 9862:2023/Amd.1:2026(en)
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ii
ISO 9862:2023/Amd.1:2026(en)
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