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- W648326660 abstract "The conventional dynamic back-calculation software (DBALM) has been used for estimating material parameters of muli-layer pavement such as Young’s modulus and damping coefficient. These two parameters are back-calculated using the load and deflection data on the surface of the pavements measured by Falling Weight Deflectometer (FWD). This paper will introduce the newly developed dynamic back-calculation software to estimate not only each pavement layer Young’s modulus and damping coefficient as well as each layer density simultaneously using FWD time series load and deflection data. 2D FEM pavement structure model with four layers system was created. The FEM dynamic back-calculation attempted to estimate 12 unknown parameters, which are each layer Young’s modulus, damping coefficient, and density. Both of numerical simulation data and in-situ FWD load and deflection data are used to verify the accuracy of the back-calculated parameter values by FEM dynamic back-calculation. It shows that the back-calculated parameter values are reasonable and close to their laboratory material property values." @default.
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- W648326660 date "2009-01-01" @default.
- W648326660 modified "2023-09-26" @default.
- W648326660 title "Development of Method for Back-Calculation to Estimate Pavement Layer Material Densities" @default.
- W648326660 hasPublicationYear "2009" @default.
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