COMPRESSIVE BEHAVIOR OF CARBON FIBER REINFORCED POLYMER-CONFINED CONCRETE IN ELLIPTICAL COLUMNS

Reinforced concrete columns can be strengthened by a fiber-reinforced polymer (FRP) jacket providing lateral confinement to the column. This technique is very effective for circular columns, but its effectiveness is much reduced for rectangular columns. One possibility for increasing effectiveness of FRP confinement for a rectangular column is to modify the column section into an elliptical section. For such section modification to be widely adopted in practice, it is necessary to develop a good understanding of the behavior of FRP-confined concrete in elliptical columns. This paper therefore presents the results of an experimental study on FRP-confined concrete in elliptical columns. Test results are provided, indicating that although the confining FRP becomes increasingly less effective as the section becomes more elliptical, substantial strength gains from FRP confinement can still be achieved even for strongly elliptical sections. The ultimate axial strain of the confined concrete is also shown to increase as the FRP confinement becomes stronger. Based on test results, a simple compressive strength model for FRP-confined concrete in elliptical columns is given, in which the effect of the section shape is taken into account by a shape factor.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Teng, J G
  • Lam, L
• Publication Date: 2002-12

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 1535-43
• Serial:
  • Journal of Structural Engineering
  • Volume: 128
  • Issue Number: 12
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Axial compression; Bridge engineering; Carbon fibers; Columns; Compressive strength; Confined concrete; Fiber reinforced concrete; Highway engineering; Jacketing (Strengthening); Structural engineering; Structural strengthening; Structural supports
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00935600
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 16 2003 12:00AM