An alternative of crack length extension in R-curve analysis of asphalt concrete

This study applies the Digital Image Correlation (DIC) technique to capture the displacement field on the specimen surface in the SC(B) fracture test of asphalt concrete for the construction of R-curves. Previous research, utilizing a displacement method, did not capture the micro-cracking that occurs during the formation of the cohesive zone in a fracture specimen. A Crack Opening Displacement Matrix (CODM) is defined based on the DIC...