Experimental investigation of nonconventional confinement for concrete using FRP

Michael Karantzikis, Catherine G. Papanicolaou, Costas P. Antonopoulos, Thanasis C. Triantafillou

Research output: Contribution to journalArticlepeer-review


The present study investigates experimentally the behavior of concrete confined with fiber reinforced polymers (FRP) in the form of jackets which are applied according to a number of nonconventional techniques. First, the effectiveness of various jacketing configurations combined with anchors as a measure of increasing the strength and deformability of L-shaped columns is investigated. It is concluded that easy to install and low-cost anchors made of resin impregnated fibers properly placed at the reentrant corner of L-shaped columns enable excellent mobilization of confining stresses supplied by the FRP jackets. Next, a number of alternative confinement methods are investigated on concrete cylinders, aimed at quantifying the effectiveness of (1) unbonded jacketing, (2) spirally applied strips attached only at their ends, and (3) jacketing directly on concrete with mortar plastering. Although the study may be regarded as preliminary, it provides useful experimental support to a number of techniques which have the potential to open new horizons in the field of externally applied FRP for enhancing concrete confinement.

Original languageEnglish (US)
Pages (from-to)480-487
Number of pages8
JournalJournal of Composites for Construction
Issue number6
StatePublished - Nov 2005


  • Anchors
  • Concrete
  • Confinement
  • Experimentation
  • Fiber reinforced polymers

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering


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