Tran-SET 2020
A Comparative Study between Emulsion Residue Recovery Methods Based on Polymer Degradation
Publication: Tran-SET 2020
ABSTRACT
In this study, two commonly used emulsion recovery methods (beaker method and thin-film 2-day method) have been compared based on polymer degradation. The performance of polymer modified asphalt emulsion has been determined based on the ductilometer-based force ductility and recently introduced dynamic shear rheometer (DSR)-based extensional deformation test parameters. In the case of the force ductility test, the second peak force, F2, indicates polymer characteristics. In the case of the extensional deformation test, the second peak force, F2, detects the presence and quantifies the amount of elastomeric polymer in asphalt binder and emulsion. It was hypothesized that the lower the F2 value, the higher the polymer degradation. Three polymer-modified asphalt emulsions (CRS-2P, CHFRS-2P, and PME) were tested. The thin-film 2-day residue recovery method exhibited lower F2 value than the beaker method which, indicated the polymer network was damaged more during the thin-film 2-day residue recovery method. The findings of this study will help to understand the recovery methods of asphalt emulsion residue and select the appropriate recovery method.
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ACKNOWLEDGMENTS
This study is funded by the Transportation Consortium of South-Central States (Tran-SET) under the project "Development of a Standard Test Method for Characterization of Asphalt Modifiers and Aging-Related Degradation Using an Extensional Rheometer".
REFERENCES
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Information & Authors
Information
Published In
Tran-SET 2020
Pages: 205 - 214
Editors: Craig Newtson, Ph.D., New Mexico State University, Susan Bogus Halter, Ph.D., University of New Mexico, and Marwa Hassan, Ph.D., Louisiana State University
ISBN (Online): 978-0-7844-8330-5
Copyright
© 2021 American Society of Civil Engineers.
History
Published online: Jan 12, 2021
Published in print: Jan 12, 2021
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