Degradation of Tensile Properties in CFRCM Composites Under Anodic Polarization: Role of Standardized Electrolyte Solutions

This study systematically investigates the tensile property degradation of Carbon Fabric-Reinforced Cementitious Matrix (CFRCM) composites under anodic polarization, explicitly comparing the effects of three standard-required electrolyte environments (NACE/ISO). CFRCM specimens were polarized for 20 days at current densities of 200 and 400 mA/m2 in NaCl, NaOH, and simulated concrete pore solutions. Results reveal that anodic polarization significantly reduces peak tensile strength and post-cracking stiffness, with degradation severity dependent on the electrolyte type (NaCl > NaOH > Pore Solution). Crucially, comparative analysis demonstrates that the strength degradation of carbon fiber bundles embedded in the mortar matrix is more pronounced than that of bare bundles. This work provides essential durability data for CFRCM composites for integrated ICCP-Structural Strengthening systems.