VGTU talpykla > Transporto inžinerijos fakultetas / Faculty of Transport Engineering > Moksliniai straipsniai / Research articles >

Lietuvių   English
Please use this identifier to cite or link to this item: http://dspace.vgtu.lt/handle/1/4209

Title: Further exploration of the pavement oxidation model – Diffusion-reaction balance in asphalt
Authors: Cui, Yuanchen
Glover, Charles J.
Bražiūnas, Justas
Sivilevičius, Henrikas
Keywords: Pavement oxidation mode
Asphalt oxidation
Diffusion-reaction balance
Aging
Issue Date: 2018
Publisher: Elsevier
Citation: Cui, Y., Charles J. G., Braziunas, J., Sivilevicius, H., 2018. Further exploration of the pavement oxidation model – Diffusion-reaction balance in asphalt. Construction and Building Materials. 161, 132-140. https://doi.org/10.1016/j.conbuildmat.2017.11.095
Series/Report no.: 161;
Abstract: Oxygen diffusion and oxidative reaction are two main factors in asphalt oxidative aging discovered by experiment, but the dynamic balance between them could not be easily studied by experimental methods due to its comprehensiveness. A pavement oxidation model was utilized to simulate this process in asphalt: oxygen molecules penetrate into the asphalt film and then react with the asphalt molecules. In some special cases, diffusion or reaction can become the determination step of asphalt oxidative aging. Another factor, asphalt hardening, which is a result of oxidative reaction, slows the oxygen diffusion seriously and consequently. With the help of the model simulation, the efforts of binder reaction kinetics, hardening properties and temperature on this balance have been studied and discussed in detail. A new standard for asphalt binder, solely from oxidation aspect, includes high activation energy, low hardening susceptibility and high hardening intercept. A new idea of anti-oxidant development was proposed. By decreasing oxygen diffusion, asphalt oxidation can be slowed down, but only works for oxygen diffusion determined cases.
URI: http://dspace.vgtu.lt/handle/1/4209
ISSN: 0950-0618
Appears in Collections:Moksliniai straipsniai / Research articles

Files in This Item:

File Description SizeFormat
Further exploration of the pavement oxidation model – Diffusion-reaction balance in asphalt.pdf1.22 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback