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Seismic rehabilitation of reinforced concrete joints by epoxy pressure injection technique

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

The use of the epoxy pressure injection technique to rehabilitate reinforced concrete beam-column joints damaged by earthquakes is investigated experimentally. Two full-scale exterior beam-column joint specimens were submitted to reverse cyclic pseudo-static displacements. The first specimen was typical of existing structures built in the fifties and sixties where the special seismic recommendations related to the spacing of lateral reinforcement in the beam, column and joint were ignored. The second specimen was typical of new structures and incorporated full seismic details as prescribed in current building codes. The specimens were then repaired with an epoxy pressure injection technique. The repaired specimens were subjected to the same displacement history as that imposed on the original specimens. The results indicate that epoxy pressure injection was effective in restoring the strength, stiffness and energy-dissipation capacity of the specimens. For the specimen representing an older design, the strength and energy dissipation of the repaired assembly were increased as the result of the epoxy injection repair.

Original languageEnglish
Title of host publicationSeismic Rehabilitation of Concrete Structures
EditorsGajanan M. Sabnis, Avanti C. Shroff, Lawrence F. Kahn
PublisherAmerican Concrete Institute
Pages73-92
Number of pages20
ISBN (Electronic)9780870316586
StatePublished - Jun 1 1996
EventSeismic Rehabilitation of Concrete Structures at 1994 ACI Spring Convention - San Francisco, United States
Duration: Mar 20 1994Mar 25 1994

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-160

Conference

ConferenceSeismic Rehabilitation of Concrete Structures at 1994 ACI Spring Convention
Country/TerritoryUnited States
CitySan Francisco
Period03/20/9403/25/94

Keywords

  • Beams (supports)
  • Columns (supports)
  • Earthquakes
  • Epoxy resins
  • Joints (junctions)
  • Reinforced concrete
  • Repairs

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