EN 12447:2001
(Main)Geotextiles and geotextile-related products - Screening test method for determining the resistance to hydrolysis in water
Geotextiles and geotextile-related products - Screening test method for determining the resistance to hydrolysis in water
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.
Geotextilien und geotextilverwandte Produkte - Auswahlprüfverfahren zur Bestimmung der Hydrolysebeständigkeit in Wasser
Diese Norm legt ein Prüfverfahren zur Bestimmung der Beständigkeit von Geotextilien und geotextilverwandten Produkten gegen Hydrolyse fest, indem Messproben bei erhöhten Temperaturen Wasser ausgesetzt und dann bewertet werden, um die durch diese Einflüsse bedingten Eigenschaftsänderungen zu ermitteln. Das Prüfverfahren ist zur Festlegung einer Mindestanforderung für die Beständigkeit vorgesehen.
Die Prüfung ist auf alle hydrolyseanfälligen Geotextilien und geotextilverwandten Produkte anwendbar, besonders auf Materialien auf Polyester- und Polyamidbasis und zusätzlich auf die Garne, aus denen diese Geotextilien hergestellt sind. Bewehrungsmaterialien müssen unbeschichtet geprüft werden; die Hersteller müssen sicher-stellen, dass durch eine Beschädigung der Beschichtung die Garne weder angegriffen noch ungünstig beeinflusst werden.
Das Verfahren ist nicht zur Bestimmung der Beständigkeit von Geotextilien gegen Hydrolyse unter stark sauren oder alkalischen Bedingungen vorgesehen.
ANMERKUNG Auf der Grundlage dieses Verfahrens können auch anwendungsbezogene Prüfungen für langfristige Lebensdauervorhersagen oder zum Vergleich von Produkten aus unterschiedlichen Polymeren oder aus gleichen Polymeren mit unterschiedlicher Struktur entwickelt werden, wobei jedoch für Temperatur und Dauer weitere Bereiche ausgewählt werden müssen.
Géotextiles et produits apparentés - Méthode d'essai sélective pour la détermination de la résistance à l'hydrolyse dans l'eau
La présente Norme européenne spécifie une méthode d'essai sélective permettant de déterminer la résistance des géotextiles et des produits apparentés aux géotextiles à l'hydrolyse par exposition des éprouvettes à de l'eau à températures élevées, suivie d'une évaluation des changements de propriétés résultant de cette exposition. Le but de cet essai est d'établir un niveau minimal acceptable de durabilité.
L'essai s'applique à tous les géotextiles et produits apparentés aux géotextiles sensibles à l'hydrolyse, notamment les matériaux à base de polyester et de polyamide et par extension aux fils dont les géotextiles sont faits. Les matériaux de renforcement doivent être soumis à essai sans leur revêtement et les fabricants doivent s'assurer que la dégradation du revêtement n'attaquera pas les fils ou n'aura pas d'incidence sur la dégradation de ces derniers.
La méthode décrite n'est pas prévue pour la détermination de la résistance des géotextiles à l'hydrolyse dans des conditions élevées d'alcalinité ou d'acidité.
NOTE Les essais de performance destinés à prévoir la durée de vie à long terme ou à comparer les produits composés de polymères différents ou des mêmes polymères mais ayant une structure différente peuvent utiliser la même méthode mais avec une plage plus large de températures et de durées.
Geotekstilije in geotekstilijam sorodni izdelki - Preskusna metoda za ugotavljanje odpornosti proti hidrolizi v vodi
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Geotekstilije in geotekstilijam sorodni izdelki - Preskusna metoda za ugotavljanje odpornosti proti hidrolizi v vodiGeotextilien und geotextilverwandte Produkte - Auswahlprüfverfahren zur Bestimmung der Hydrolysebeständigkeit in WasserGéotextiles et produits apparentés - Méthode d'essai sélective pour la détermination de la résistance a l'hydrolyse dans l'eauGeotextiles and geotextile-related products - Screening test method for determining the resistance to hydrolysis in water59.080.70GeotekstilijeGeotextilesICS:Ta slovenski standard je istoveten z:EN 12447:2001SIST EN 12447:2002en01-junij-2002SIST EN 12447:2002SLOVENSKI
STANDARDSIST ENV 12447:19991DGRPHãþD
SIST EN 12447:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12447October 2001ICS 59.080.70Supersedes ENV 12447:1997English versionGeotextiles and geotextile-related products - Screening testmethod for determining the resistance to hydrolysis in waterGéotextiles et produits apparentés - Méthode d'essaisélective pour la détermination de la résistance àl'hydrolyse dans l'eauGeotextilien und geotextilverwandte Produkte -Auswahlprüfverfahren zur Bestimmung derHydrolysebeständigkeit in WasserThis European Standard was approved by CEN on 10 August 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12447:2001 ESIST EN 12447:2002
EN 12447:2001 (E)2ForewordThis European Standard has been prepared by Technical Committee CEN/TC 189"Geosynthetics", the secretariat of which is held by IBN.This European Standard shall be given the status of a national standard, either bypublication of an identical text or by endorsement, at the latest by April 2002, and conflictingnational standards shall be withdrawn at the latest by April 2002.This European Standard supersedes ENV 12447:1997.This standard includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom.SIST EN 12447:2002
EN 12447:2001 (E)3IntroductionThis standard describes a screening test method to establish a minimum acceptance levelof resistance of geotextiles and geotextile-related products to soil moisture.In certain polymers moisture leads to hydrolysis throughout the thickness of the fibre(internal hydrolysis) but the rate of degradation is such that over short periods it is onlymeasurable at elevated temperatures, e.g. by immersion in hot water.NOTE
This standard should be used with reference to CR ISO 13434.1ScopeThis European Standard specifies a screening test method for determining the resistance ofgeotextiles and geotextile-related products to hydrolysis by exposing test specimens towater at elevated temperatures, followed by an evaluation of the changes in propertiesresulting from such exposure. It is intended as a means of establishing a minimumacceptable level of durability.The test is applicable to any geotextile and geotextile-related product susceptible tohydrolysis, in particular polyester and polyamide based materials, and in addition to theyarns from which these geotextiles are made. Reinforcing materials shall be tested withoutthe coating and manufacturers shall ensure that the degradation of the coating will notattack or have any negative influence on the degradation of the yarns.This method is not intended for determining the resistance of geotextiles to hydrolysis underhighly acid or alkaline conditions.NOTE
Performance tests to predict long-term lifetime or to compare products of different polymers orof similar polymers with differing structures can be based on the same m
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