Effect of Different Strengthening Ways on Rc Beams Using Gfrp, Cfrp and Ultra High Strength Concrete

DOI

10.2991/978-94-6239-654-8_65How to use a DOI?

Keywords

Reinforced concrete beams; Retrofitting; Ultra High Strength Concrete (UHSC); GFRP; CFRP; Flexural strengthening; Finite Element Analysis (FEA); Structural performance; Ductility; Crack behavior

Abstract

A new type of cement mix called Ultra High Strength Concrete (UHSC) was employed for making weak RC beams stronger. Other retrofitting methods like GFRP and CFRP were also tried, and each one has its own good and bad sides. To keep the study fair, same ingredients and same process were followed for all the beams. The behavior of the beams after strengthening was also checked using finite element analysis (FEA). The results from computer model matched well with the lab test results. The cracks, damaged areas and crushing of concrete shown in simulation were almost same as what happened during testing, so the FEA model was quite accurate. It was seen that the main failure of retrofitted beams was still like normal RC beams, mainly flexural failure where steel starts yielding first and then concrete crushes. So the way of failure did not change much, but the strength and ductility improved clearly. From the whole study it can be said that UHSC is a very good method to retrofit damaged RC beams. It avoids many problems that come with steel plates or FRP laminates. Beams retrofitted with UHSC not only become stronger but also show more ductility and better performance in long run.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Kallamadi Naveen Reddy
AU  - M. Hemapriya
PY  - 2026
DA  - 2026/04/24
TI  - Effect of Different Strengthening Ways on Rc Beams Using Gfrp, Cfrp and Ultra High Strength Concrete
BT  - Proceedings of the Global Conference on Sustainable Energy Systems, Smart Electronics and Intelligent Computing (GCSESEIC 2025)
PB  - Atlantis Press
SP  - 834
EP  - 850
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-654-8_65
DO  - 10.2991/978-94-6239-654-8_65
ID  - Reddy2026
ER  -