This document describes index tests for determining the strength of the internal structural junctions under different loading conditions of all geocomposites and of clay geosynthetic barriers.

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This document describes index tests for determining the strength of the internal structural junctions under different loading conditions of all geocomposites and of clay geosynthetic barriers.

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This document describes index tests for determining the strength of the internal structural junctions under different loading conditions of all geocomposites and of clay geosynthetic barriers.

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    11 pages
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This document provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used to fulfil the function of an asphalt interlayer. The key potential failure mechanisms and design aspects to be considered are described, and guidance is proposed to select engineering properties. The state of the art is however limited and does not commend any particular design method. This document can be used as a basis for further research on, for example, system selection, design, performance testing, creation of local guidelines.

  • Technical report
    23 pages
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This document establishes general principles for the sampling of geosynthetics delivered to construction sites, and for the preparation of test specimens from the samples.
The sampling principles are applicable to geosynthetics supplied in rolls or expandable panels.
NOTE            ISO 186 can be used for products supplied in sheet form.
The specimen-preparation principles are applicable to all geosynthetics.

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This document provides general considerations to support design guidance for the evaluation of geosynthetics to fulfil a protective function to any surface or material placed in contact with the protective element.

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    14 pages
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This document establishes general principles for the sampling of geosynthetics delivered to construction sites, and for the preparation of test specimens from the samples.
The sampling principles are applicable to geosynthetics supplied in rolls or expandable panels.
NOTE            ISO 186 can be used for products supplied in sheet form.
The specimen-preparation principles are applicable to all geosynthetics.

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    12 pages
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This document establishes general principles for the sampling of geosynthetics delivered to construction sites, and for the preparation of test specimens from the samples. The sampling principles are applicable to geosynthetics supplied in rolls or expandable panels. NOTE ISO 186 can be used for products supplied in sheet form. The specimen-preparation principles are applicable to all geosynthetics.

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This document describes a procedure for producing mechanical damage to geotextiles and geotextile-
related products due only to compaction of soil or other materials. The damage is assessed visually and
by the loss of tensile strength or other reference tests used to assess the damage caused by this procedure.
The method described is a full-scale test procedure, using a range of fills and compaction methods, and
for the derivation of a reduction factor for installation damage for geotextiles and geotextile-related
products.
This document excludes geosynthetic barriers and products used in pavements and asphalt overlays.

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This document describes a procedure for producing mechanical damage to geotextiles and geotextile-related products due only to compaction of soil or other materials. The damage is assessed visually and by the loss of tensile strength or other reference tests used to assess the damage caused by this procedure.
The method described is a full-scale test procedure, using a range of fills and compaction methods, and for the derivation of a reduction factor for installation damage for geotextiles and geotextile-related products.
This document excludes geosynthetic barriers and products used in pavements and asphalt overlays.

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This document specifies methods of deriving reduction factors for geosynthetic drainage materials to account for intrusion of filter geotextiles, compression creep, and chemical and biological degradation. It is intended to provide a link between the test data and the codes for design with geosynthetic drains. The geosynthetics covered include those whose primary purpose is planar drainage, such as geonets, cuspated cores only, or cuspated cores combined with laminated filter geotextiles, and drainage liners, where the drainage core is made from polypropylene and high-density polyethylene. The majority of geosynthetic drains are geocomposites with geotextiles laminated to a drainage core and it is important, where possible, to consider the drainage behaviour of the geocomposite as a whole rather than the behaviour of the component parts in isolation. This document does not cover the strength of overlaps or joints between geosynthetic drains nor whether these might be more or less durable than the basic material. It does not apply to geomembranes, for example, in landfills. It does not cover the effects of dynamic loading nor any change in mechanical properties due to soil temperatures below 0 °C, or the effects of frozen soil. This document does not cover uncertainty in the design of the drainage structures, nor the human or economic consequences of failure. Design guidance for geosynthetic drains is found in ISO/TR 18228-4.

  • Technical specification
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This European Standard describes an index test method that covers laboratory measurement of water flux through saturated clay geosynthetic barrier (GBR-C) specimens using a flexible wall permeameter at constant head.
This test method is applicable to GBR-C products with no additional sealing layers attached.
This test method provides a measurement of flux under a prescribed set of conditions that can be used for manufacturing quality control. The test method can also be used to check conformance.
The flux value determined using this test method is not considered to be representative of the in-service flux of a GBR-C.

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This document specifies an index test method that covers laboratory measurement of water flux through saturated clay geosynthetic barrier (GBR-C) specimens using a flexible wall permeameter at constant head.
This test method is applicable to GBR-C products with no additional sealing layers attached (e.g. polymeric or bituminous).
This test method specifies a measurement of flux under a prescribed set of conditions that can be used for manufacturing quality control. The test method can also be used to check conformance.
The flux value determined using this test method is not considered to be representative of the in-service flux of a GBR-C.

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This document provides guidelines for the determination of the long-term strength of geosynthetics for soil reinforcement. This document describes a method of deriving reduction factors for geosynthetic soil-reinforcement materials to account for creep and creep rupture, installation damage and weathering, and chemical and biological degradation. It is intended to provide a link between the test data and the codes for construction with reinforced soil. The geosynthetics covered in this document include those whose primary purpose is reinforcement, such as geogrids, woven geotextiles and strips, where the reinforcing component is made from polyester (polyethylene terephthalate), polypropylene, high density polyethylene, polyvinyl alcohol, aramids and polyamides 6 and 6,6. This document does not cover the strength of joints or welds between geosynthetics, nor whether these might be more or less durable than the basic material. Nor does it apply to geomembranes, for example, in landfills. It does not cover the effects of dynamic loading. It does not consider any change in mechanical properties due to soil temperatures below 0 °C, nor the effect of frozen soil. The document does not cover uncertainty in the design of the reinforced soil structure, nor the human or economic consequences of failure.

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This document considers the guidance for geotechnical and civil engineers involved in the design of the barrier function.

  • Technical report
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This document specifies a screening test method for determining the resistance of geotextiles and geotextile-related products to hydrolysis by exposing test specimens to water at elevated temperatures, followed by an evaluation of the changes in properties resulting from such exposure. It is intended as a means of establishing a minimum acceptable level of durability.
The tests described in this document do not allow the determination of reduction factors. The tests described in this document are screening tests to show the ability of a product to serve for a certain time. The reference strength and retained strength of products investigated in this document need to be determined in the same way in accordance with EN 12226.
The test is applicable to any geotextile and geotextile-related product susceptible to hydrolysis, in particular polyester and polyamide based materials, and in addition to the yarns from which these geotextiles are made.
This method is not intended for determining the resistance of geotextiles to hydrolysis under highly acid or alkaline conditions.
NOTE   Performance tests to predict long-term lifetime or to compare products of different polymers or of similar polymers with differing structures can be based on the same method but with a wider range of temperatures and durations.

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This document outlines the criteria for evaluating the available and the required flow rate of geosynthetics in various situations, provides a summary of the available laboratory testing, and lists the safety factors and reduction factors that can be applied to the parameters when designing using geosynthetics for drainage systems.

  • Technical report
    61 pages
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This document provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used to fulfil the function of separation of soils and below ground structures in contact with natural soils and fills. These considerations are always based on installed soils, the installation process and on the strength and/or deformation behaviour of geosynthetics.

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    8 pages
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This document specifies index test methods for determining the compressive creep properties of geosynthetic products. The test specimens are subjected either to normal compressive loading or to a combination of normal compressive loading and shear loading.
The test method with a normal load only (see Clause 5) is the standard method.
The test method in which combined normal and shear loads are applied (see Clause 6) is intended for products that are sensitive to shear failure, i.e. which have a columnar or cuspated structure.
The tests are carried out on dry specimens or on specimens immersed in water. The test is intended to be carried out with the specimen immersed in water when any part of the geosynthetic product contains a hydrophilic polymer.

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This European Standard specifies a screening test method for determining the resistance of geotextiles and geotextile-related products to hydrolysis by exposing test specimens to water at elevated temperatures, followed by an evaluation of the changes in properties resulting from such exposure. It is intended as a means of establishing a minimum acceptable level of durability.
The test is applicable to any geotextile and geotextile-related product susceptible to hydrolysis, in particular polyester and polyamide based materials, and in addition to the yarns from which these geotextiles are made. Reinforcing materials shall be tested without the coating and manufacturers shall ensure that the degradation of the coating will not attack or have any negative influence on the degradation of the yarns.
This method is not intended for determining the resistance of geotextiles to hydrolysis under highly acid or alkaline conditions.
NOTE   Performance tests to predict long-term lifetime or to compare products of different polymers or of similar polymers with differing structures can be based on the same method but with a wider range of temperatures and durations.

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This document provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used as a filter. The key potential failure mechanisms are described, and guidance is proposed to select engineering properties.

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    20 pages
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This document provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used as reinforcement. The key potential failure mechanisms are described, and guidance is proposed to select engineering properties.

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This document specifies a method for the determination of the microbiological resistance of geosynthetics including those of natural fibres and biodegradable polymers by a soil burial test.
NOTE   Experience and exhumation of geosynthetics which had performed successfully, in some cases for more than two decades, indicate that geosynthetics made out of synthetic materials are generally resistant against microbial initiated decay. It can therefore be expected that most of these products commercially available at the present time will pass the soil burial test successfully and it is probably not necessary to submit them all to this test independent of their function. However, if the requirements for appropriate functioning of the geosynthetics demand proof of microbiological resistance or if they are manufactured from newly developed polymers whose resistance is in any doubt, the soil burial test can provide additional information.

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This document specifies a method for determining the constant-head water flow capacity within the plane of a geotextile or geotextile-related product. This document describes the in-plane water flow index test, only applicable to factory-assembled products. For the in-plane water flow performance test, see ISO 12958-2.

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This document specifies a method for determining the constant-head water flow capacity within the plane of a geotextile or geotextile-related product, using boundary materials and test conditions of interest. A standard series of test conditions are proposed, involving soil confinement, low hydraulic gradients, seating times and an array of normal loads.

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This document specifies index test methods for determining the compressive creep properties of
geosynthetic products. The test specimens are subjected either to normal compressive loading or to a
combination of normal compressive loading and shear loading.
The test method with a normal load only (see Clause 5) is the standard method.
The test method in which combined normal and shear loads are applied (see Clause 6) is intended for
products that are sensitive to shear failure, i.e. which have a columnar or cuspated structure.
The tests are carried out on dry specimens or on specimens immersed in water. The test is intended
to be carried out with the specimen immersed in water when any part of the geosynthetic product
contains a hydrophilic polymer.

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This specific test serves to determine the protective effect of different geosynthetics against water erosion by heavy rain. The test is performed in a laboratory apparatus and the results serve as a performance test.

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This document specifies an index test method for the simulation of rainfall-induced erosion on the surface of a slope protected by geosynthetic erosion control products.
The test is normally carried out on specimens conditioned under a specified atmosphere.
The test is applicable to most geosynthetics, but is especially suited to geosynthetic erosion control products.

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This document specifies index test methods for determining the compressive creep properties of geosynthetic products. The test specimens are subjected either to normal compressive loading or to a combination of normal compressive loading and shear loading. The test method with a normal load only (see Clause 5) is the standard method. The test method in which combined normal and shear loads are applied (see Clause 6) is intended for products that are sensitive to shear failure, i.e. which have a columnar or cuspated structure. The tests are carried out on dry specimens or on specimens immersed in water. The test is intended to be carried out with the specimen immersed in water when any part of the geosynthetic product contains a hydrophilic polymer.

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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.

  • Standard
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This standard specifies a method for the determination of the microbiological resistance of geotextiles and geotextile-related products by a soil burial test. It does not specify for which products or in which applications the soil burial test is required. Further reference should be made to CR ISO 13434.

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This document specifies test methods for the determination of tensile properties of polymeric geosynthetic barriers PE (e.g. PE-HD and PE-LLD), FPO (e.g. EVA, FPP, and PE-VLD), PVC-P and EPDM.
Method A is suitable for testing polymeric geosynthetic barriers (GBR-P), made of PVC-P, EPDM and FPO (e.g. EVA, FPP and PE-VLD), non-reinforced (including maximum 80gsm glass fleece) and without backing.
Method B is suitable for testing polymeric geosynthetic barriers (GBR-P) made of PE (e.g. PE-HD and PE-LLD), non-reinforced and without backing.
Method C is suitable for testing polymeric geosynthetic barriers (GBR-P), reinforced and/or with backing.
Method D is suitable for measuring modulus (if required) of all non-reinforced GBR-P.
NOTE   For homogenous polymers not listed above, method A and D can be used.

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This document specifies a method for determining the constant-head water flow capacity within the
plane of a geotextile or geotextile-related product, using boundary materials and test conditions of
interest. A standard series of test conditions are proposed, involving soil confinement, low hydraulic
gradients, seating times and an array of normal loads.

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This document specifies a method for determining the constant-head water flow capacity within the
plane of a geotextile or geotextile-related product. This document describes the in-plane water flow
index test, only applicable to factory-assembled products. For the in-plane water flow performance test,
see ISO 12958-2.

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This document provides guidelines for the assessment of the durability of geosynthetics, the object of which is to provide the design engineer with the necessary information, generally defined as changes in material properties or as partial safety factors, to ensure that the expected design life of a geosynthetic can be achieved with confidence. This document is not applicable to products designed to survive for only a limited time, such as erosion-control fabric based on natural fibres. This document is applicable to the durability of the geosynthetics and not to the durability of the geotechnical structure as a whole. NOTE The calculation of reduction factors for soil reinforcement applications is described in ISO/TR 20432.

  • Technical specification
    42 pages
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  • Technical specification
    42 pages
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This document specifies a method for determining the constant-head water flow capacity within the plane of a geotextile or geotextile-related product, using boundary materials and test conditions of interest. A standard series of test conditions are proposed, involving soil confinement, low hydraulic gradients, seating times and an array of normal loads.

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  • Standard
    16 pages
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  • Standard
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  • Standard
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  • Standard
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This document specifies a method for determining the constant-head water flow capacity within the plane of a geotextile or geotextile-related product. This document describes the in-plane water flow index test, only applicable to factory-assembled products. For the in-plane water flow performance test, see ISO 12958-2.

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  • Standard
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This document specifies a method for the determination of the characteristic size of the openings of a single layer of a geotextile or geotextile-related product using the wet-sieving principle.

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This standard specifies methods for screening the resistance of geotextile products to liquids while not subjecting them to external mechanical stress.
The standard 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 should be interpreted in the context of site conditions.
NOTE This standard only considers conditions where the specimens are fully immersed in the liquids. Though outside the scope of this standard, the test conditions may be modified to accommodate particular applications, e.g. gaseous media. This standard does not preclude use for test specimens that are pre-treated by some method, e.g. by weathering, aqueous extraction conditions or installation damage.

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This document describes an index test procedure for simulating mechanical damage to geosynthetics, caused by granular material, under repeated loading. The damage is assessed visually and by the loss of tensile strength.
Other reference tests can be used to assess the damage caused by this test. The test method described is an index test procedure, using a standard granular material, and is not intended to be used for the derivation of a reduction factor for geosynthetic reinforcement.

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This document describes index test methods for the determination of the strength of internal structural junctions of geocells under different loading conditions.

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This document specifies a test method for determining the abrasion resistance of geotextiles and geotextile-related products under wet conditions. This document is applicable to geotextiles and geotextile-related products intended to be used as e.g. geo bags or filter beneath armourstone. The test method simulates abrasion impacts on geotextiles and geotextile-related products such as that caused by the movement of rocks in an embankment or transport of sediment in rivers. This document provides an index test which can be used for performance and acceptance testing. It can be used as performance test by comparison of mechanical and/or additional hydraulic properties before and after abrasion impact.

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  • Standard
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  • Standard
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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.

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This document specifies test methods for the determination of tensile properties of polymeric geosynthetic barriers (PE (PEHD and PELLD, FPO (EVA, FPP, and PEVLD), PVC-P and EPDM).
Method A is suitable for testing polymeric geosynthetic barriers (GBRP), PVC, EPDM and FPO (EVA, FPP and PEVLD), non-reinforced (including 80gsm glass fleece) and without backing.
Method B is suitable for testing polymeric geosynthetic barriers (GBRP), PE (HDPE and PELLD), non-reinforced and without backing.
Method C is suitable for testing polymeric geosynthetic barriers (GBRP), reinforced and/or with  backing.
Method D is suitable for measuring modulus (if required) of all non-reinforced products.

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This document provides general considerations to support the guidance to geotechnical and civil engineers for design using geosynthetics provided in the subsequent parts of the ISO/TR 18228 series.

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This document specifies a method for the on-site installation and retrieval of geosynthetic samples, irrespective of the particular degradation mechanisms to which they are exposed.
The method is also appropriate to test for mechanical damage, much of which occurs during installation, and to provide an owner with information about the state of the geosynthetic product in their structure.

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This document specifies a method for the determination of the characteristic size ofthe openings of a single layer of a geotextile or geotextile-related productusing the wet-sieving principle.

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This document specifies two test methods for determining the water permeability characteristics of a single layer of geotextile or geotextile-related product normal to the plane:
a)    the constant head method; and
b)    the falling head method.

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