1. Ph.D. Student, Royal Institute of Technology, School of Architecture and Built Environment, Department of Civil and Architectural Engineering, Brinellvägen 34, 100 44 Stockholm, Sweden; formerly, Ph.D. Student, School of Industrial Technology and Management, Road Technology, Dalarna Univ., 781 88 Borlänge, Sweden (corresponding author).
2. Professor, School of Industrial Technology and Management, Road Technology, Dalarna Univ., 781 88 Borlänge, Sweden.