Advances in backcalculating the mechanical properties of flexible pavements |
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| Affiliation: | 1. Department of Civil Engineering, Ege University, 35100 Izmir, Turkey;2. Istanbul Technical University, Department of Civil Engineering, 34469 Ayazaga, Istanbul, Turkey;1. National Laboratory for Civil Engineering, LNEC, Av. do Brasil 101, 1700-066 Lisbon, Portugal;2. Doctoral Programme in Geotechnologies Applied to Construction, Energy & Industry, University of Vigo, School of Mining Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain;3. Defense University Center, Spanish Naval Academy, Plaza de España 2, 36920 Marín, Pontevedra, Spain;4. Applied Geotechnologies Research Group, University of Vigo, School of Mining Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain;5. Elevolution – Engenharia e Construção S.A., Estrada do Seminário 4 Alfragide, 2610-171 Amadora, Portugal;1. National Laboratory for Civil Engineering, LNEC, Av. do Brasil 101, 1700-066 Lisbon, Portugal;2. Doctoral Programme in Geotechnologies Applied to Construction, Energy & Industry, University of Vigo, School of Mining Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain;3. Defense University Center, Spanish Naval Academy, Plaza de España 2, 36920 Marín, Pontevedra, Spain;4. Applied Geotechnologies Research Group, University of Vigo, School of Mining Engineering, Campus Lagoas-Marcosende, 36310 Vigo, Spain;1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Transportation and Logistics, Dalian University of Technology, Dalian 116024, China;3. College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China;1. Lublin University of Technology, Faculty of Mechanical Engineering, Department of Machine Design, Nadbystrzycka 36 Str., Lublin, Poland;2. Lublin University of Technology, Faculty of Civil Engineering and Architecture, Department of Solid Mechanics, Nadbystrzycka 40 Str., Lublin, Poland |
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| Abstract: | In current practice, the evaluation of the performance of existing road pavements has become a priority issue for many highway engineers. To make appropriate rehabilitation and management decisions the engineer must rely on an efficient method for determining the structural conditions of pavements. Nondestructive testing (NDT) reveals the stress–strain properties of pavement layers at relatively low strain levels. Since the theoretical approaches used to determine the stress–strain relationships in pavement layers calculate the deflections for given mechanical properties, it is necessary to make an inversion using a backcalculation tool. Several methods have been developed to backcalculate the mechanical properties of flexible pavement; these methods vary in analysis type, material model, and optimization algorithm. This study is designed to explain these methods and to compare and contrast them in terms of modeling precision, computational expense, and calculation details. Consequently, innovations and advances in backcalculating flexible pavements are considered in this paper. |
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