Developing Master Curves and Predicting Dynamic Modulus of Polymer-Modified Asphalt Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 2
Abstract
Four kinds of polymer modifier widely used in China are selected to modify the performance of asphalt mixture: styrene butadiene styrene (China), PR PLAST.S (France), Domix (Germany), and Rad Spunrie (China). The main objective of this paper is to evaluate the influence of these polymer modifiers on the performance of asphalt mixture with the dynamic modulus indicator through simple performance test. Dynamic modulus is adopted as the primary material property of hot mix asphalt mixtures in the M-E Pavement Design Guide 2002. In this study, the influences of temperature, frequency, and confining pressure on the dynamic characteristic of asphalt mixture are analyzed, and the master curves of dynamic modulus are developed and interpreted. The Witczak predictive model, which is used in the M-E Pavement Design Guide, is also applied to predict the dynamic modulus, and the predicted values are compared with the examined results. Results show that all these polymer modifiers, especially Domix, can strengthen the mixture stiffness, and that high frequency, low temperature, and high confining pressure increase the dynamic modulus of asphalt mixtures. Additionally, the Witczak model can soundly predict the dynamic modulus of polymer-modified asphalt mixtures.
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Acknowledgments
The writers are very thankful to anonymous reviewers for their insightful and constructive comments, which enable the writers to improve the content of the original manuscript, and to Ms. Siyuan Zhou at Nanjing Normal University and Ms. Regina Zolbrod at Catholic University of America, who helped to edit the presentation of the paper. This study is sponsored in part by the National Science Foundation (NSF) under Grant No. NSFCMMI-0408390 and NSF CAREER Award No. NSFCMMI-0644552, by the American Chemical Society Petroleum Research Foundation under Grant No. UNSPECIFIEDPRF-44468-G9, by the Changjiang Scholarship of Ministry of Education of China, by the Huoyingdong Educational Foundation under Grant No. UNSPECIFIED114024, by the Jiangsu Natural Science Foundation under Grant No. UNSPECIFIEDSBK200910046, by the Jiangsu Postdoctoral Foundation under Grant No. UNSPECIFIED0901005C, by the Shandong DOT, by the Shanxi DOT, by the Shanxi DOT under Grant No. UNSPECIFIED7921000015, and by the Yunnan DOT under Grant No. UNSPECIFIED2007(A)1–03, to which the writers are very grateful.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 2 • February 2011
Pages: 131 - 137
Copyright
© 2011 ASCE.
History
Received: Nov 18, 2009
Accepted: Jun 22, 2010
Published online: Jan 14, 2011
Published in print: Feb 2011
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