Effect of low-level cyclic loading on bond behavior of a steel bar in concrete with pre-existing damage

Chongku Yi, Jeeho Lee, Kee Jeung Hong

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding the bond behavior of steel rebar in concrete is important in order to determine the performance of a reinforced concrete structure. Although numerous studies have been carried out by many researchers to develop a robust model for numerical analysis, no consensus has been reached as the bond behavior depends on hysteresis. In this study, the bond behavior of a steel bar in concrete with pre-existing damage is investigated under low-level cyclic loading. Based on the experimental bond stress and slip curve, a numerical model for finite element analysis to simulate the effect of low-level cyclic loading is proposed. The results from the numerical analysis show good agreement with the experimental data, including accumulated damage on stiffness and strength throughout entire load cycles.

Original languageEnglish
Article number7080
JournalMaterials
Volume14
Issue number22
DOIs
Publication statusPublished - 2021 Nov 1

Keywords

  • Bond-slip
  • Concrete
  • Cyclic loading
  • Numerical model
  • Steel rebar

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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