Mechanical and Electrochemical Performance of Carbon Fiber Reinforced Polymer in Oxygen Evolution Environment

Abstract

Carbon fiber-reinforced polymer (CFRP) is recognized as a promising anode material to prevent steel corrosion in reinforced concrete. However, the electrochemical performance of CFRP itself is unclear. This paper focuses on the understanding of electrochemical and mechanical properties of CFRP in an oxygen evolution environment by conducting accelerated polarization tests. Different amounts of current density were applied in polarization tests with various test durations, and feeding voltage and potential were measured. Afterwards, tensile tests were carried out to investigate the failure modes for the post-polarization CFRP specimens. Results show that CFRP specimens had two typical tensile-failure modes and had a stable anodic performance in an oxygen evolution environment. As such, CFRP can be potentially used as an anode material for impressed current cathodic protection (ICCP) of reinforced concrete structures, besides the fact that CFRP can strengthen the structural properties of reinforced concrete.

Grafting Halloysite Nanotubes with Amino or Carboxyl Groups onto Carbon Fiber Surface for Excellent Interfacial Properties of Silicone Resin Composites

“…Carbon fibers (CFs) have become one of the ideal reinforcements for matrix resin composites because of their strong specific strength, outstanding chemical resistance and superior environmental stability [1,2,3]. The quality of interface between the fibers and matrix resin is the main element in the properties of polymer composites, and the weak quality of fiber–matrix interface leads to inferior stress transfer efficiency at the interfacial region and the dissatisfied performance of the resulting composites [4,5].…”

Study on Bearing Capacity of Reinforced Concrete Beams Strengthened With Carbon Fiber Reinforced Polymer Sheet

“…Taking the CFRP studied in this paper as an example, it can be used in concrete structures in the form of bars to replace steel bars [18], which can be used in special environments such as the ocean and can also be made into composite plates for the bridge deck, roof, etc. [19]. Also, CFRP also has good conductivity [20], which can be used as an electromagnetic shielding plate and conductive board [21,22].…”

C-FRCM Jacket Confinement for RC Columns under Impressed Current Cathodic Protection

“…However, these conventional anodes are rather expensive. Recently, Zhu et al (2016Zhu et al ( , 2017Zhu et al ( , 2018 proposed using carbon fiber (CF) mesh as the anode material, which utilized the good electrical conductivity and stable electrochemical properties of the CF mesh. Moreover, to ensure good electrical conduction between the CF mesh and the rebars, the bonding material is also important.…”