Probabilistic parametric approach for rutting evaluation: application to hot and warm asphalt

Autor:	Anissa Eddhahak Ouni, Johan Colin, A. Dony
Rok vydání:	2012
Předmět:	Materials science Rheology Mechanics of Materials Rut Asphalt Principle of maximum entropy Probability density function Geotechnical engineering Viscoelasticity Civil and Structural Engineering Parametric statistics Stiffening
Zdroj:	International Journal of Pavement Engineering. 15:58-65
ISSN:	1477-268X 1029-8436
DOI:	10.1080/10298436.2012.725473
Popis:	This paper deals with a stochastic approach to evaluate the rut depth of hot and warm bituminous mixtures. First, the rutting performance of both mixtures using the French rutting tester device was evaluated. Given the random uncertainties derived from the numerous experimental measurements of the rut depth, statistical information was collected. Accordingly, the entropy maximum principle was used here to define adequate probability density function of the rut. Confidence regions with a high probability of 99% were determined for the estimation of the rut depth. In addition, comparison of mechanical and rheological results is performed with aged bitumen recovered from reclaimed asphalt and virgin bitumen to analyse the effect of ageing on bitumen viscoelastic properties. The experimental characterisation of the different binders based on rheological and conventional tests showed stiffening and hardening effects due to bitumen ageing.
Databáze:	OpenAIRE
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