Abstract
The concept of single axle load equivalency factor (LEF) was reviewed and an in‐depth study was focused on the idea of equivalent single axle load (ESAL) developed by AASHO. A three‐dimensional finite element model was utilized to simulate the AASHO Road Test pavement sections and to develop LEF formulae for various pavement sections under various axle loadings. The characteristics of the mechanistic‐empirical derived LEF formula were examined through the viewpoints of pavement structural factors. Comparing the current AASHTO Design Guide, additional effect of base courses, joint devices, and subgrade strength were found for rigid pavement thickness design. Adequacy of traffic equivalency estimation for a specific pavement structure can be enhanced through the proposed LEF regression formula. The design example also showed that the current LEF tables in the AASHTO Design Guide resulted in lower ESALs than those from the proposed LEF formula for pavements with cement‐treated and bituminous‐treated bases.
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.
