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Digital image correlation to investigate crack propagation and healing of asphalt concrete
Navid Hasheminejad 1 , Alexandros Margaritis 1 , Bart Ribbens 1 , Cedric Vuye 1 , Johan Blom 1 , Wim Van den bergh 1 , Joris Dirckx 2 , Steve Vanlanduit 1

1  Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium
2  Laboratory of Biomedical Physics, University of Antwerp, Antwerp, Belgium

Published: 21 June 2018 by MDPI AG in Proceedings of The Eighteenth International Conference of Experimental Mechanics in The Eighteenth International Conference of Experimental Mechanics
MDPI AG, Volume 2; 10.3390/ICEM18-05381

Accurate determination of the mechanical properties of asphalt concrete is very important in Road Engineering. The traditional method to calculate these properties is to run experiments using a hydraulic/pneumatic actuator and strain gauges to apply stress and measure the strain. However, in the last decade optical measurement techniques have become popular for strain calculation on the surface of the specimen and detecting the cracks on the surface. In this study, digital image correlation is used to estimate the strain map on the surface of an asphalt specimen, predict the location of crack initiation, and investigate the healing phenomenon in asphalt concrete.

Keywords: crack propagation, Digital Image Correlation, healing, asphalt

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