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Abstract 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.… Click to show full abstract
Abstract 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.
Journal Title: Construction and Building Materials
Year Published: 2020
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