Evaluation of Engineering Properties of Recycled Aggregates and Preliminary Performance of Recycled Aggregate Base Layers
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 5
Abstract
Although there have been several studies about using recycled aggregates to construct recycled aggregate base (RAB) layers, there is a lack of information about the effects of gradation of recycled concrete aggregate (RCA) materials on the performance of such layers. There is also limited information available regarding the use of RCA and recycled asphalt pavement (RAP) materials together in RAB layers. In this study, three test cells were constructed with RAB layers using two different RCA materials with different gradations and a blend of RCA and RAP materials, and another cell was constructed with a natural aggregate base layer. Physical characteristics of the base layer aggregates were determined, and resilient modulus () tests were performed. A series of falling weight deflectometer (FWD) tests were performed in the field, and changes in air and soil temperatures over time were monitored. This paper contains detailed information about the evaluation of the engineering properties of recycled aggregates and the preliminary performance of the constructed RAB layers.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study is a part of a project funded by the National Road Research Alliance (NRRA), a multistate pooled fund. The authors would like to thank John Siekmeier, Dave Van Deusen, and Raul Velasquez of MnDOT for providing the field data. The authors would also like to thank Dr. Soheil Nazarian and the Center for Transportation Infrastructure Systems at the University of Texas at El Paso (UTEP) for performing the tests and sharing the data. The findings and opinions expressed in this study are solely those of the authors.
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Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 5 • May 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Mar 9, 2021
Accepted: Sep 14, 2021
Published online: Feb 22, 2022
Published in print: May 1, 2022
Discussion open until: Jul 22, 2022
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