Monitoring Separation Tendency of Partial Asphalt Replacement by Crumb Rubber Modifier and Guayule Resin
Guayule resin was utilized as a partial asphalt replacer for sustainable, flexible pavement. This research aimed to study the effect of such an innovative replacer on asphalt-rubber separation tendency. The replacement denoted 25–75% triggering a binder competitive with conventional asphalt. Upon Stoke’s law, viscosity variation between asphalt and guayule was dominant, which affected the rubber particle sedimentation. A binder of 62.5% asphalt, 12.5% rubber, and 25% guayule provided better rheological behavior than that of conventional asphalt at elevated temperatures. Such a binder showed almost no liquid phase separation but poor storage stability in the whole matrix, after lab-simulated storage.
A. Hemida and M. Abdelrahman, "Monitoring Separation Tendency of Partial Asphalt Replacement by Crumb Rubber Modifier and Guayule Resin," Construction and Building Materials, vol. 251, Elsevier, Aug 2020.
The definitive version is available at https://doi.org/10.1016/j.conbuildmat.2020.118967
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Asphalt rubber; Crumb rubber; FTIR; Guayule resin; Master curve; Phase separation; Storage stability; TGA
International Standard Serial Number (ISSN)
Article - Journal
© 2020 Elsevier, All rights reserved.
10 Aug 2020