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Evaluation of asphalt pavement interface conditions for enhanced bond performance : [summary].
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2017-05-01
[PDF-86.92 KB]
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Abstract:In this project, University of Florida researchers conducted a comprehensive program of modeling to understand interface debonding and near-surface longitudinal cracking in the wheel path of asphalt pavements.
To understand the interaction of debonding and cracking, the researchers set two goals. First, they wished to model asphalt pavements to find where stresses caused by vehicle loads might make debonding possible. Second, once debonding occurred, they wanted to know how stresses were distributed in the separated layers and how that contributes to near-surface longitudinal cracking.
The primary method for modeling the pavement-vehicle system was finite element analysis of a four-layer pavement model. To properly frame this work, the researchers evaluated various parameters and modeling scales to determine the appropriate level of complexity needed to provide meaningful results.
Understanding the precise mechanisms of pavement failures can lead to improved materials and procedures that reduce maintenance and increase durability of Florida roadways.
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