Transportation Research Congress 2017
Research on New Component Analysis Method for Pyrolytic Crumb Rubber Modified Asphalt
Publication: Transportation Research Congress 2017: Sustainable, Smart, and Resilient Transportation
ABSTRACT
On the basis of the problems in analyzing the components of pyrolytic crumb rubber modified asphalt (PRA) by the current component analysis method, a new method applicable to component analysis of PRA was proposed through material characteristics analysis of PRA and solubility test of rubber hydrocarbon. Components of PRA were divided into petroleum ether soluble fraction, toluene soluble fraction, and insoluble fraction. The matching formulas were put forward and the operation of the experiment was simplified. The new method was used to analyze the components of PRA made by pyrolysis at 250°C for 0 min, 30 min, 60 min, 120 min, 240 min, and 480 min respectively. And the content of maltenes, asphaltenes, and base asphalt in PRA was obtained by the formulas. The pyrolysis mechanism of PRA was well explained by the composition change rules of PRA. The content of base asphalt in PRA increased from 70% to 91.25% at 60 min pyrolysis, and the conversion of the crumb rubber powder to the asphalt was realized.
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ACKNOWLEDGMENT
This study was supported by National International S&T Cooperation Program-funded Project (No. 2013DFR50550) and National Natural Science Foundation of China (No. 51578097).
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Information & Authors
Information
Published In
Transportation Research Congress 2017: Sustainable, Smart, and Resilient Transportation
Pages: 189 - 196
Editors: Linbing Wang, Ph.D., Virginia Polytechnic University, Hongren Gong, Ph.D., University of Tennessee, Knoxville, and Baoshan Huang, Ph.D., University of Tennessee, Knoxville
ISBN (Online): 978-0-7844-8251-3
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Oct 3, 2019
Published in print: Oct 3, 2019
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