International Research Award on Civil and Environmental Engineering

  Introduction Cement Stabilized Macadam (CSM) plays a vital role as a semi-rigid base layer in modern highway pavement systems, particularly in China. However, its long-term performance is often compromised due to environmental conditions and continuous vehicular loading, which promote cracking and structural deterioration. Repairing such damage effectively remains a major challenge. Although various repair materials have been proposed, the fracture behavior of CSM after repair has not been extensively studied. This research aims to investigate the mechanical and fracture characteristics of repaired CSM (RCSM) using three-point bending tests, focusing on crack evolution through acoustic emission (AE) and digital image correlation (DIC) methods. Literature Review on CSM Damage and Repair Previous studies have primarily focused on the mechanical strength and durability of CSM under traffic and environmental stressors. Cracking in CSM typically originates from shrinkage, temperat...