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Reclaimed Asphalt Pavement Asphalt Binder Properties Using Impact Resonance Testing (IRT)

Purpose:  To determine an alternative procedure and test method to characterize Reclaimed Asphalt Pavement (RAP) material asphalt binder properties.  Impact Resonance Testing has demonstrated, in preliminary and initial study, it is a quicker, less expensive procedure and method to characterize RAP material asphalt binder properties than the current chemical solvent extraction and asphalt binder recovery process followed by Performance Graded Asphalt Binder (PGAB) testing of the recovered asphalt binder.  Impact resonance testing is also much less harmful to the environment by reducing use and disposal of chemical solvents and significantly reduces the chemical exposure to employees performing the chemical solvent extraction and recovery process.

Construction - Project No: PSU WO 010


Anticipated Outcomes

An accurate alternate procedure for determining the performance-grade of the asphalt binder in Reclaimed Asphalt Pavement (RAP) Material.  This would be an alternate to the current procedure that includes  chemical solvent extraction of the RAP material, recovery of the extracted asphalt binder, and Performance-Graded Asphalt Binder testing of the recovered asphalt binder.

PennDOT Technical Advisor:
​Deborah Reihart
Project Duration:
​3/1/19 - 10/1/20
Research Contractor:
​Penn State University
Principal Investigator:
Mansour Solaimanian
Project Cost:
$127,254.85