Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of chopped carbon fiber on interfacial behaviors of ICCP-SS system
Highlights Mechanical tests were evaluated the interface performance of C-FRCM and concrete. The ICCP-SS system is effective in retarding the steel corrosion of RC structures. Chopped CFs bypass polarization current and alleviate the deterioration of CFRP mesh. Chopped CFs ensure the interface performance under long-run of anodic polarization.
Abstract In the present work, chopped carbon fibers (CFs) were incorporated into a CF-reinforced cementitious matrix (C-FRCM) and are considered to be an operative reinforcement material with a good compatibility with concrete. The interfacial bonding between the C-FRCM and concrete was evaluated by pull-off and double-shear tests. The pull-off and shear strengths of the C-FRCM with chopped CFs were enhanced under long-term polarization compared to those for matrixes without chopped CFs. The microstructure of the interface between the C-FRCM and concrete was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The microanalyses showed that the presence of CFs retarded the degradation of the CF-reinforced plastic (CFRP) mesh, indicating that chopped CFs can serve as a secondary anode and form a three-dimensional conductive system, where the CFRP mesh serves as the main anode and can diffuse the polarization current, lessening the electrical degradation of the CFRP mesh.
Effect of chopped carbon fiber on interfacial behaviors of ICCP-SS system
Highlights Mechanical tests were evaluated the interface performance of C-FRCM and concrete. The ICCP-SS system is effective in retarding the steel corrosion of RC structures. Chopped CFs bypass polarization current and alleviate the deterioration of CFRP mesh. Chopped CFs ensure the interface performance under long-run of anodic polarization.
Abstract In the present work, chopped carbon fibers (CFs) were incorporated into a CF-reinforced cementitious matrix (C-FRCM) and are considered to be an operative reinforcement material with a good compatibility with concrete. The interfacial bonding between the C-FRCM and concrete was evaluated by pull-off and double-shear tests. The pull-off and shear strengths of the C-FRCM with chopped CFs were enhanced under long-term polarization compared to those for matrixes without chopped CFs. The microstructure of the interface between the C-FRCM and concrete was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The microanalyses showed that the presence of CFs retarded the degradation of the CF-reinforced plastic (CFRP) mesh, indicating that chopped CFs can serve as a secondary anode and form a three-dimensional conductive system, where the CFRP mesh serves as the main anode and can diffuse the polarization current, lessening the electrical degradation of the CFRP mesh.
Effect of chopped carbon fiber on interfacial behaviors of ICCP-SS system
Li, Wan-qian (Autor:in) / Pei, Chun (Autor:in) / Zhu, Yaoteng (Autor:in) / Zhu, Ji-Hua (Autor:in)
19.12.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Online Contents | 1997
Zonal ICCP system control interactions
| British Library Conference Proceedings | 2005