Comparaison des méthodes de mesures des déformations dans les matériaux bitumineux

• Unité de recherche: COST
• Numéro de projet: C02.0004

Mots-clé (Anglais)

Road; pavement; accelerated loading; tests

Programme de recherche (Anglais)

COST-Action 347 - Tests de charge accélérés

Description succincte (Anglais)

See abstract

Autres indications (Anglais)

Full name of research-institution/enterprise: EPF Lausanne LAVOC - Laboratoire des voies de communications

Partenaires et organisations internationales (Anglais)

A, B, CZ, DK, FIN, F, D, GR, H, IS, NL, RO, SI, E, S, CH, GB

Résumé des résultats (Abstract) (Anglais)

From 2002 to 2004 the COST action 347 (European Co-operation in the field of Scientific and Technical Research) was organised under the title 'Improvements in Pavement Research with Accelerated Load Testing', including full-scale pavement tests at a number of European research laboratories. In Lausanne, Switzerland (EPFL) a test pavement of a fully-flexible type was constructed and equipped with strain gauges of different types usually in service in Europe and Canada. The loading-facility in Lausanne is an indoor test-pit where road structures can be repeatedly loaded by a linear heavy-pavement-rutting-tester. Within the ALT-program the loading conditions were controlled, comprising a variation of the pavement temperature, a variation of the loading parameters (axle load, tyre type and tyre pressure, loading speed) and an investigation of the lateral distribution of the responding strains with respect to the load axis. Longitudinal and transversal signals were recorded, that resulted from measurements on the different types of strain gauges and in two different depths: 40 mm and 220 mm from the pavement surface. As a result the shape and the order of magnitude of strains were found for different levels of observation and for defined loading conditions. This makes it possible to comparatively analyse the functionality of the different types of strain gauges on the one hand, and, on the other hand, through a number of Short Term Scientific Missions which were organised and prepared by LAVOC, to derive important information on pavement response that may be used in pavement modelling and performance prediction.

Références bases de données (Anglais)

Swiss Database: COST-DB of the State Secretariat for Education and Research Hallwylstrasse 4 CH-3003 Berne, Switzerland Tel. [phone] Swiss Project-Number: C02.0004