Abstract
It is consensus that overloads on vehicle axles accelerate pavement deterioration, which produce effects on these structures’ lifespan. Therefore, this study sought to evaluate the effect of traffic overload on a pavement’s estimated lifespan through stress–strain analyses, considering different layer interface conditions (fully bonded, partially and fully debonded) as well as different deflectometric basins, average and maximum, obtained from tests with Falling Weight Deflectometer (FWD). Data from three Homogeneous Segments (HS) that are part of a highway duplication and restoration project being developed from KM 387.41 to KM 427.75 of BR-116/BA were used. Deflectometric data were back calculated on BackMeDiNa software, which estimated the resilient moduli used as inputs during stress–strain analyses on AEMC software. These simulations aimed to determine not only the elastic responses of the structure but also the overlay thicknesses required to restore pavement functional properties on each HS. Results indicate that pavement lifespan predictions are closely related to loading percentual increases, whilst a decreasing and non-linear relationship between these parameters was observed. Moreover, it was found that, when friction between layers is disregarded, overlays are considerably thicker than those obtained when pavement layers are fully or partially bonded.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
