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Post-strengthening of reinforced concrete beams with prestressed CFRP strips [Part 1]

Analysis under static loading

Author(s):


Medium: journal article
Language(s): English
Published in: Revista IBRACON de Estruturas e Materiais, , n. 3, v. 5
Page(s): 343-361
DOI: 10.1590/s1983-41952012000300006
Abstract:

Different FPR post-strengthening techniques have been developed and applied in existing structures aiming to increase their load capacity. Most of the FRP systems used nowadays consist of carbon fibers embedded in epoxy matrices (CFRP). Regardless of the advantages and the good results shown by the CFRP post-strengthen technique, experimental studies show that, in most cases, the failure of post-strengthened structures is premature. Aiming to better use the tensile strength of the carbon fiber strips used as post-strengthening material, the application of prestressed CFRP strips started to be investigated. The main purpose of this paper is to analyze the effects of the composite prestressing in the performance of the CFRP post strengthening technique. The experimental program was based on flexural tests on post-strengthened reinforced concrete beams subjected to static - part 1 and cyclic - part 2 loading. Experimental results allowed the analysis of the quality and shortcomings of post-strengthen system studied, which resulted in valuable considerations about the analyzed post-strengthened beams.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1590/s1983-41952012000300006.
  • About this
    data sheet
  • Reference-ID
    10413587
  • Published on:
    12/02/2020
  • Last updated on:
    12/02/2020
 
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