Durability and ultimate performance of concrete beams with epoxy-coated reinforcing bars

Xiao Hui Wang, Li Zheng

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A series of experimental tests on reinforced concrete specimens with normal uncoated and epoxy-coated reinforcing bars (ECRBs) was carried out. A comprehensive report of the specimens, from material level to overall performance, is presented in this paper. At the material level, evaluation of the epoxy coating thickness showed that the production quality was not good. Some mechanical properties of bars with a thinner coating were better than those of their uncoated counterparts, while an increase in coating thickness offset the better mechanical properties and decreased the bond strength. Regarding durability, a comparison of the corrosion behaviour of the reinforcing bars and chloride penetration of the concrete cover in unloaded, statically-loaded and fatigue-loaded test specimens showed that higher fatigue loads and longer fatigue loading cycles decreased the corrosion resistance of the bars and increased the chloride penetration. The ultimate loads of the specimens were reduced and comparatively lower values were obtained for beams with bars with thicker coatings. The results of this work highlight the interrelationships among materials performance, durability and ultimate performance to achieve sustainable design for concrete elements with ECRBs in chloride-containing environments.

Original languageEnglish
Number of pages16
JournalProceedings of the Institution of Civil Engineers: Structures and Buildings
Early online date4 Jan 2021
DOIs
Publication statusE-pub ahead of print - 4 Jan 2021

Keywords

  • Concrete structures
  • Corrosion
  • Sustainability

Fingerprint

Dive into the research topics of 'Durability and ultimate performance of concrete beams with epoxy-coated reinforcing bars'. Together they form a unique fingerprint.

Cite this