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Smart FRP-OFBG bars and their application in reinforced concrete beams

  • Jinping Ou*
  • , Zhi Zhou
  • , Bo Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Fiber Reinforced Polymer (FRP) has shown advantages of corrosion-resistance, high strength, nonmagnetic, fatigue-resistance and so on. Optical Fiber Bragg Grating (OFBG) is now widely accepted as smart sensor due to its advantages of electric-magnetic resistance, small size, distributed sensing, durability, and so on. Combined the FRP with OFBG, new kind of smart FRP-OFBG composite oars were developed, and their properties of mechanics, micro-structures and sensing properties were studied. Furthermore, the FRP-OFBG reinforced concrete beams under static load were tested and the distribution strain of the FRP bars and the cracking of concrete were monitored, especially the slip between FRP bars and concrete. The experimental results show that FRP-OFBG can be conveniently used in reinforced concrete structures as sensors as well as reinforcing bars.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalGaojishu Tongxin/Chinese High Technology Letters
Volume15
Issue number4
StatePublished - Apr 2005
Externally publishedYes

Keywords

  • FRP
  • FRP-OFBG bar
  • Optical FBG
  • Reinforced concrete beam
  • Structural health monitoring

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