Seismic retrofit with discontinuous slurry infiltrated mat concrete (SIMCON) jackets

N. Krstulovic-Opara, J. M. LaFave, E. Dogan, C. M. Uang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Older reinforced concrete structures constructed in seismically active areas of the United States are usually non-ductile and are thus identified as hazardous. Extensive efforts have been devoted to the development of adequate retrofitting techniques for these buildings. While laboratory studies have shown that the usc of "conventional" Fiber Reinforced Concretes (FRCs) and High Performance FRCs (HPFRCs) in new construction leads to substantially improved seismic response, seismic retrofit techniques have not yet taken advantage ofthese advanced composites. The advantage of conventional FRCs is a significant increase in ductility over that of reinforced concrete. The advantage of 1-IPFRCs is that, when loaded beyond the elastic limit, they exhibit significant increases in tensile strength and ductility, leading to a substantial increase in the ability of the structure to dissipate energy - a feature particularly desirable for earthquake-resistant design. The goal of the presented research was to develop a novel seismic retrofit technique, using recently developed 1-IPFRCs, to solve the following common problems of non-seismically designed reinforced concrete frames: (1) inadequate anchorage of the discontinuous bottom beam reinforcement, (2) inadequate confinement of the column lap splices, and (3) inadequate confinement of the joint. I-IPFRCs used in the presented research include Slurry Infiltrated Fiber Concrete (SIFCON) and Slurry Infiltrated Mat Concrete (SIMCON). The presented research was conducted in collaboration with a project Advisory Panel consisting of consulting structural engineers from Wiss, Janney, Elstner Associates, Inc.

Original languageEnglish (US)
Title of host publicationHigh-Performance Fiber Reinforced Concrete in Infrastructural Repair and Retrofit
EditorsNeven Krstulovic-Opara, Ziad Bayasi
PublisherAmerican Concrete Institute
Pages141-185
Number of pages45
ISBN (Electronic)9780870316845
StatePublished - Feb 1 2000
Externally publishedYes

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-185
ISSN (Print)0193-2527

Keywords

  • Composite materials
  • Concretes
  • Construction materials
  • Metal fibers
  • Slurry

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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