Evaluation of polymer modification in asphalt mixtures through digital image correlation and performance space diagrams

•High and low temperature performance of polymer modified mixtures was completed.•Performance space diagram showed best mixture performance with PG70-28 binder.•DIC results displayed increased fracture process zone size with polymer modification.•Asphalt mixture fracture process zone size shrunk due to test boundaries.•Asphalt mixture fracture process zone size was a function of test geometry.