The LCPC's ALT facility contribution to pavement cracking knowledge
Résumé
The full scale observation of damage and failure mechanisms of pavements due to traffic is quite essential for the improvement of road materials and construction methods, as well as for the development and the validation of modelling tools and pavement design methods. An alternative to the survey of real roads over long periods consists in performing accelerated pavement tests (APT). LCPC has today more than 20 years of experience in APT applied to study of pavement deterioration and cracking. Since 2006, in relation with an LCPC research program to update the French pavement design method, a detailed analysis of existing data of LCPC APT tests is being carried out. The objective of this work is to improve the understanding and modellingof the development of rutting and fatigue in different types of pavements. This paper presents the first conclusions of this synthesis, in relation to fatigue cracking, for the purpose of the RILEM Technical Committee – Cracking in Asphalt Pavements (TC-CAP).
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