Flexural cracks in fibre-reinforced concrete beams with fibre-reinforced polymer reinforcing bars

Scientific paper - Original scientific paper

• Author: Enes Krasniqi
• Author: Domagoj Damjanović
• Author: Naser Kabashi
• Editor: Nina Štirmer
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

There are several reasons why civil and structural engineers may need to use FRP reinforcement (fibre reinforced polymer) in concrete. The primary reason is durability, but other reasons include electromagnetic neutrality, high strength, and lightweight. The use of fibre-reinforced polymer composites, as replacement for steel reinforcement in concrete structures, is a widespread practice in many countries. The unique characteristic of FRP as a material not susceptible to corrosion makes it particularly suitable in a variety of situations. Due to generally low elastic modulus and poor bond, the use of FRP results in larger crack widths, especially when beams are reinforced with GFRP bars. The aim of this research is to use fibre-reinforced concrete (FRC) in order to reduce crack widths. The paper provides results for 16 beams (three samples per set for GFRP and two samples per set for steel reinforcement) tested under four point bending. Based on the applied methodology, the existing codes are reviewed, compared and modified, so as to enable their calibration in accordance with appropriate results.

• Keywords (english): RC beams; GFRP; CFRP; FRC; fibre coefficients; crack width
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - domestic
• Publication version: Published version
• Publication title: 6th Symposium on Doctoral Studies in Civil Engineering
• Numbering: pp. 175-187
• ISBN: 978-953-8168-42-0
• DOI: https://doi.org/10.5592/CO/PhDSym.2020
• URN:NBN: urn:nbn:hr:237:608767
• Publication: 2020
• Conference: Title: 6. simpozij doktorskog studija građevinarstva 2020; Location: ZAGREB, Croatia; Start date: 2020-09-07; End date: 2020-09-08; Assembly type: Lecture
• Type of resource: Text
• Publisher: Sveučilište u Zagrebu, Građevinski fakultet
• Publishing place: Zagreb
• Access conditions: Open access
• Created on: 2024-08-25 14:59:31