Abstract
In this study, pavement layers’ elastic moduli obtained from different deflection devices were compared. This was based on measurements with the Falling Weight Deflectometer (FWD), Traffic Speed Deflectometer (TSD) and Rapid Pavement Tester (Raptor) at four road sections in the Norwegian road network. An elastic back-calculation software system called EBS was introduced to compare the results. Also, a new viscoelastic back-calculation procedure was performed on TSD data using the ViscoRoute software. The findings of this study demonstrate the limitations of the elastic approach in capturing the viscoelastic characteristics of pavement layers. The proposed viscoelastic back-calculation procedure marks a preliminary effort to integrate dynamic modulus calculation into the Pavement Management System, potentially leading to more cost-effective maintenance strategies.
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