Railway applications - Track - Polymer composite sleepers and bearers - Part 2 : methodology for assessing material ageing

Introduction 4

1 Domaine d'application 4

2 Références normatives 4

3 Principe 5

4 Identification et caractérisation du matériau composite 6

5 Essais de vieillissement artificiel accéléré 6

5.1 Objectifs des essais 6

5.2 Méthodes d'exposition en laboratoire 7

6 Exposition au vieillissement naturel 10

6.1 Généralités 10

6.2 Éprouvettes 10

6.3 Évolution des propriétés mécaniques 10

7 Essai de vieillissement thermique 10

7.1 Principe 10

7.2 Vieillissement en enceinte climatique 11

7.3 Évolutions des propriétés mécaniques 11

Annexe A (informative) Détermination de l'énergie d'activation thermique d'un matériau pour l'oxydation 12

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