Evaluation of the Effect of Interlayer Shear Strength of a Layered Asphalt Pavement on Observed Distresses in the Field: A Case Study
Publication: Airfield and Highway Pavements 2021
ABSTRACT
This study was undertaken to determine how the distresses developed in a layered asphalt pavement structure under in-service conditions are affected by its interlayer shear strength. For this purpose, a newly constructed asphalt pavement, as a part of a city project, in which several premature distresses were observed was selected for this study. The pavement under the study has started to exhibit rutting as well as extensive half-moon cracking in the surface course. Full-depth cores were extracted from several locations including those exhibiting distresses as well as the locations which were seemingly intact. Cores were tested in the laboratory and their interlayer shear strength (ISS) values were determined. Also, densities of both surface and base layers for each sample were measured. It was observed that the measured densities and the ISS values of the tested core samples collected from proximity of the rutted and cracked areas were correlated with observed distresses.
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Airfield and Highway Pavements 2021
Pages: 264 - 271
Copyright
© 2021 American Society of Civil Engineers.
History
Published online: Jun 4, 2021
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