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Design of concrete beam reinforced with GFRP bars as per ACI codal provisions

Authors :
Reddy R. Venkata Suraj
Reddy V. Srinivasa
Rao M.V. Seshagiri
Shrihari S.
Kadhim Sokaina Issa
Awasthi Monisha
Source :
E3S Web of Conferences, Vol 391, p 01213 (2023)
Publication Year :
2023
Publisher :
EDP Sciences, 2023.

Abstract

This document provides design principles for concrete beams reinforced with glass fiber reinforced polymer (GFRP) bars per the ACI 440.1R-15 regulation. One of the main advantages of using glass fiber reinforced polymer rods instead of traditional steel reinforced rods is their lighter weight and higher corrosion resistance. However, the bending failure mode of FRP reinforced concrete (FRP-RC) beams is brittle rather than ductile because the elasticity of fiber reinforced polymer (FRP) bars is linear until failure and the elongation at break is small. For FRP-RC elements, concrete crushing compression failure, which gives various warnings before failure, is the preferred failure mode. In other words, unlike the usual design practice for reinforced concrete (steel-RC) beams, for FRP-RC beams, an over-reinforced structure is preferable to an under-reinforced structure. In addition, since the FRP RC member has low rigidity of the FRP rod, it bends more and cracks larger than the steel RC member. These factors limit the field of application of FRP. Here is a design example of a rectangular beam with tension reinforcement according to ACI regulations.

Details

Language :
English, French
ISSN :
22671242
Volume :
391
Database :
Directory of Open Access Journals
Journal :
E3S Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.27406d1ae6b49c1838afaeceae24557
Document Type :
article
Full Text :
https://doi.org/10.1051/e3sconf/202339101213