Numerical simulation of bond degradation subjected to corrosion-induced crack by simplified rebar and interface model using RBSM

Yizhou Yang*, Hikaru Nakamura, Yoshihito Yamamoto, Taito Miura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The bond degradation subjected to corrosion-induced crack was investigated numerically using 3D Rigid Body Spring Model (RBSM) in which rebar was modeled by solid elements without modeling explicitly the details of rebar ribs. The proposed numerical model considers both corrosion expansion and shear stress transfer behavior through the interface elements. Validation of proposed model showed that it is possible to obtain reasonable bond performance of non-corroded specimen as meso-scale models. By comparison with experimental results, the proposed model was verified to reproduce the bond deterioration considering corrosion-induced crack with different concrete cover thickness. Moreover, bond deterioration mechanism subjected to corrosion-induced crack was clarified through the crack development and stress distribution of concrete and was found to be the combined effects of degradation of the compressive stress in diagonal compression struts and ring-tension around rebar. Bond deterioration of specimen with larger concrete cover is more sensitive to formation of corrosion crack.

Original languageEnglish
Article number118602
JournalConstruction and Building Materials
Volume247
DOIs
Publication statusPublished - 2020 Jun 30
Externally publishedYes

Keywords

  • 3D RBSM
  • Bond deterioration mechanism
  • Bond-slip relationship
  • Concrete cover
  • Corrosion-induced crack
  • Surface crack width

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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