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Mechanical performance of beams strengthened by carbon fiber sheet bonded with inorganic adhesive after fire

  • Fuxiong Wan*
  • , Wenzhong Zheng
  • *Corresponding author for this work
  • Kunming University of Science and Technology
  • School of Civil Engineering, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

According to the fact that softening temperature of organic epoxy adhesive is too low to meet fire, an inorganic adhesive whose strength at 600°C is not lower than that at normal room temperature, is developed to bond Carbon Fiber Sheet (CFS) in order to strengthen reinforced concrete beams. To understand all-round mechanical performance of RC beams strengthened by CFS bonded by an inorganic adhesive after fire, on the base of experimental research, Conjugate Beam Method is used to analyze the whole mechanical process from loading to failure. The test and analysis results show that, for RC slabs strengthened by CFS bonding with the inorganic adhesive, maximum stress of CFS decreases with small amplitude compared with that before fire, and the strength of the sheet can be utilized to a great extent, even if temperature (about 300°C~470°C) an inorganic adhesive experienced outclasses softening temperatures of ordinary organic epoxy adhesives. Beams strengthened by CFS bonded with inorganic adhesive perform good fire behavior.

Original languageEnglish
Title of host publicationAdvances in Civil Engineering II
Pages873-877
Number of pages5
EditionPART 1
DOIs
StatePublished - 2013
Externally publishedYes
Event2nd International Conference on Civil Engineering and Transportation, ICCET 2012 - Guilin, China
Duration: 27 Oct 201228 Oct 2012

Publication series

NameApplied Mechanics and Materials
NumberPART 1
Volume256-259
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Civil Engineering and Transportation, ICCET 2012
Country/TerritoryChina
CityGuilin
Period27/10/1228/10/12

Keywords

  • After fire
  • An inorganic adhesive
  • Carbon fiber sheet
  • Conjugate beam method
  • RC beam

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