Master of Science (MS)


Construction Management

Document Type



Self-healing microencapsulation in asphalt concrete is an emerging technology that would allow this particular material to resist cracking damage caused by vehicular and environmental loading. The objectives of this study were to evaluate the effect of an asphalt rejuvenator on asphalt binder in reversing the aging process and to develop a synthesis procedure for the production of microencapsulation of asphalt rejuvenators. Production parameters such as agitation rate, heating temperature and EMA concentration were varied to determine the effect on microcapsules properties such as size, shell thickness and morphology. Based on the results of the experimental program, it was concluded that the use of PennzSuppress D as a rejuvenator was effective in partially reversing the aging of asphalt binder by positively influencing both the high temperature and low temperature grades of the binder 70-22. In contrast, the use of PennzSuppress D as a rejuvenator did only influence the low temperature grade of the binder 76-22 and the high temperature grade of the RAP. A synthesis procedure was developed for the preparation of microencapsulation of PennzSuppress D and to characterize microcapsule properties such as diameter, shell thickness and morphology of the prepared microcapsules.



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Committee Chair

Harper, Chris