Influence of Aggregate Gradation on Clogging Characteristics of Porous Asphalt Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 7
Abstract
This research investigates the influence of aggregate gradation on the clogging characteristics of porous asphalt mixtures. Ten representative gradations used for open graded friction course (OGFC) applications from across the United States were used in this evaluation. The aggregate gradation was found to be strongly correlated to the macrotexture depth of the porous pavement and the permeability of the mixes both before and after clogging. Utilizing graded sand as the clogging material, it was also found that the operational (or secondary) clogging rate is approximately half of the measured initial clogging rate. Additionally, the operational clogging rate can be estimated from the value for the system, which is the ratio of the of the porous asphalt gradation to the of the clogging material.
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Acknowledgments
The authors wish to acknowledge the South Carolina Department of Transportation for sponsoring this research.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 7 • July 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Feb 19, 2013
Accepted: Nov 4, 2013
Published online: Nov 6, 2013
Published in print: Jul 1, 2014
Discussion open until: Sep 7, 2014
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