Paper Title:
Research on Aging Mechanism of Modified Asphalt by Gel Permeation Chromatography and Grey Relevant Methods
  Abstract

The aging of modified asphalt includes modifier and asphalt aging. Combining with the changes of macroscopic properties index for modified asphalt before and after aging, aging mechanism of modified asphalt was studied by gel permeation chromatography(GPC) and grey relevant methods. And the results indicated that changes in content, molecular weight and dispersion degree of asphalt before and after aging are the most significant factors influencing macroscopic properties of modified asphalt. Asphalt content is the most significant factor influencing penetration, toughness and tenacity, ductility(5 °C) and quality; Weight average molecular weight of asphalt is the most significant factor influencing viscosity(135°C); Dispersion degree of asphalt is the most significant factor influencing elastic recovery. Conclusion provides the test basis for the evaluation of anti-aging properties of modified asphalt.

  Info
Periodical
Advanced Materials Research (Volumes 230-232)
Edited by
Ran Chen and Wenli Yao
Pages
1005-1009
DOI
10.4028/www.scientific.net/AMR.230-232.1005
Citation
Y. Zhou, K. Zhang, S. F. Chen, "Research on Aging Mechanism of Modified Asphalt by Gel Permeation Chromatography and Grey Relevant Methods", Advanced Materials Research, Vols. 230-232, pp. 1005-1009, 2011
Online since
May 2011
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Price
$32.00
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