EN ISO 12960:2020 PDF

Geotextiles and geotextile-related products - Screening test methods for determining the resistance to acid and alkaline liquids (ISO 12960:2020)

Title (English):

EN ISO 12960:2020

Geotextiles and geotextile-related products - Screening test methods for determining the resistance to acid and alkaline liquids (ISO 12960:2020)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 13
Publication date:: June 17, 2020
Edition:: CEN EN 12960 edition 2 version 1
ICS:: 59.080.70

Document language:

enru

Delivery time:1–7 days

Price:60 €

Description (English):

This document specifies methods for screening the resistance of geotextile and geotextile-related products to liquids while not subjecting them to external mechanical stress. It is applicable to all geotextiles and geotextile-related products. Method A applies particularly to polyamides and method B to polyesters and polyamides. The test results are intended to be interpreted in the context of site conditions. This document is intended to be used in conjunction with ISO/TS 13434. NOTE This document only considers conditions where the specimens are fully immersed in the liquids. Though outside the scope of this document, the test conditions can be modified to accommodate particular applications, e.g. gaseous media. This document does not preclude use for test specimens that are pre-treated by some method, e.g. by weathering, aqueous extraction conditions or installation damage.

Technical details

Technical committee: CEN/TC 189 - Geotextiles and geotextile-related products
SKU: EN ISO 12960:2020

Abstract

Overview

EN ISO 12960:2020 specifies screening (index) test methods to determine the resistance of geotextiles and geotextile‑related products to acidic and alkaline liquids. Intended for use without applying external mechanical stress, the standard provides accelerated immersion tests to assess chemical attack under controlled laboratory conditions. Results are screening-level and must be interpreted in the context of site conditions; they are not alone sufficient to predict long-term service life.

Key topics and technical requirements

Scope and purpose
- Applies to all geotextiles and geotextile‑related products (geosynthetics).
- Used in conjunction with ISO/TS 13434.
Test principle
- Complete immersion of specimens in test liquids; compare properties before and after exposure (and after drying if applicable).
- Where possible, compare with control specimens stored under reference conditions.
Two methods
- Method A: recommended particularly for polyamides. Uses an inorganic acid liquid - 0.025 M sulfuric acid with 1 mmol ferri- and 1 mmol ferro-sulfate.
- Method B: recommended for polyesters and polyamides. Uses inorganic alkaline liquid - saturated calcium hydroxide (~2.5 g/L).
Test conditions
- Temperature: 60 ± 1 °C
- Duration: 3 days
- Water quality: laboratory water meeting ISO 3696, grade 3
Apparatus and procedure
- Corrosion‑resistant container (borosilicate glass or stainless steel), sealing lid, stirring/mixing, specimen holders, air saturation device, and means to control/test liquid composition.
- Maintain constant test‑liquid composition; monitor and adjust or replace liquid if necessary.
- Sampling and specimen preparation per EN 12226.
Limitations
- Only considers fully immersed specimens; gaseous media or combined mechanical/chemical stress are outside the standard scope but can be adapted.
- Intended as screening - not a direct measure of in‑service lifetime unless supported by further evidence.

Applications and users

Who uses it: geosynthetic manufacturers, independent testing laboratories, civil/geotechnical engineers, quality assurance teams, product specifiers and procurement officers.
Practical uses
- Rapid screening of material susceptibility to acidic or alkaline environments (e.g., landfill leachates, industrial effluents, cement pore waters).
- Comparative evaluation during product development or incoming quality control.
- Supporting material selection and risk assessment for installations where exposure to extreme pH is expected.

Related standards

ISO/TS 13434 (use in conjunction)
EN 12226 (sampling and preparation)
ISO 3696 (laboratory water quality)

Keywords: EN ISO 12960, ISO 12960:2020, geotextiles, geosynthetics, acid resistance test, alkaline resistance test, screening test, Method A, Method B, chemical durability.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Scope and purpose
- Applies to all geotextiles and geotextile‑related products (geosynthetics).
- Used in conjunction with ISO/TS 13434.
Test principle
- Complete immersion of specimens in test liquids; compare properties before and after exposure (and after drying if applicable).
- Where possible, compare with control specimens stored under reference conditions.
Two methods
- Method A: recommended particularly for polyamides. Uses an inorganic acid liquid - 0.025 M sulfuric acid with 1 mmol ferri- and 1 mmol ferro-sulfate.
- Method B: recommended for polyesters and polyamides. Uses inorganic alkaline liquid - saturated calcium hydroxide (~2.5 g/L).
Test conditions
- Temperature: 60 ± 1 °C
- Duration: 3 days
- Water quality: laboratory water meeting ISO 3696, grade 3
Apparatus and procedure
- Corrosion‑resistant container (borosilicate glass or stainless steel), sealing lid, stirring/mixing, specimen holders, air saturation device, and means to control/test liquid composition.
- Maintain constant test‑liquid composition; monitor and adjust or replace liquid if necessary.
- Sampling and specimen preparation per EN 12226.
Limitations
- Only considers fully immersed specimens; gaseous media or combined mechanical/chemical stress are outside the standard scope but can be adapted.
- Intended as screening - not a direct measure of in‑service lifetime unless supported by further evidence.

Applications and users

Who uses it: geosynthetic manufacturers, independent testing laboratories, civil/geotechnical engineers, quality assurance teams, product specifiers and procurement officers.
Practical uses
- Rapid screening of material susceptibility to acidic or alkaline environments (e.g., landfill leachates, industrial effluents, cement pore waters).
- Comparative evaluation during product development or incoming quality control.
- Supporting material selection and risk assessment for installations where exposure to extreme pH is expected.

Related standards

ISO/TS 13434 (use in conjunction)
EN 12226 (sampling and preparation)
ISO 3696 (laboratory water quality)

Keywords: EN ISO 12960, ISO 12960:2020, geotextiles, geosynthetics, acid resistance test, alkaline resistance test, screening test, Method A, Method B, chemical durability.

EN ISO 12960:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Geotextiles and geotextile-related products — Screening test methods for determining the resistance to acid a…

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