Rutting Resistance of Rubberized Asphalt Concrete Pavements Containing Reclaimed Asphalt Pavement Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 6
Abstract
Improved understanding of rutting resistance of a rubberized asphalt concrete pavement that contains reclaimed asphalt pavement (RAP) is important to stimulating the use of rubberized asphalt mixtures. Use of RAP in the past has proved to be economical, environmentally sound, and effective in increasing the rutting resistance of asphalt mixtures. Rubberized asphalt has been used successfully in improving the mechanical characteristics, such as rutting resistance, of typical hot mix asphalt (HMA) mixture around the country and the world. The objective of this research was to investigate the rutting resistance characteristics of the rubberized asphalt mixtures through a laboratory testing program. The experimental design included use of two rubber types (ambient and cryogenically produced), four rubber contents, and three crumb rubber sizes. The results of the experiments indicated that the use of RAP and crumb rubber in the HMA can effectively improve the rut resistance of these mixes.
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Acknowledgments
The writers thank Ms. Jennifer Aune for providing some of the data presented in this paper. The assistance of Dr. Junan Shen and Dr. Brad Putman is very much appreciated. The financial support from the South Carolina Department of Health and Environmental Control through the Asphalt Rubber Technology Services (ARTS) of Clemson University is also greatly appreciated.
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© 2007 ASCE.
History
Received: Sep 20, 2005
Accepted: Jul 31, 2006
Published online: Jun 1, 2007
Published in print: Jun 2007
Notes
Note. Associate Editor: Baoshan Huang
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