1. Department of Investments, Technology and Environment, Swedish Transport Administration , Neptunigatan 52 , Box 366, SE-201-23, Malmö , Sweden
2. Department of Building and Environmental Technology, Division of Building Materials, Lund University, Lunds Tekniska Högskola LTH (Faculty of Engineering) , Box 118, SE-221-00 , Lund , Sweden
3. École polytechnique de Bruxelles (Brussels Faculty of Engineering), Laboratory of Image Synthesis and Analysis (LISA), Université Libre de Bruxelles (ULB), Campus de Solbosch – CP 165/57 , Av. F. D. Roosevelt 50 , B-1050 Brussels , Belgium