Strengthening of Reinforced Concrete Beams Experiencing Shear Failure Using Ferofoam Concrete Plates

DOI

10.2991/978-94-6463-952-0_15How to use a DOI?

Keywords

Ferofoam Concrete; Strengthening of Reinforced Concrete; wiremesh

Abstract

Over time, concrete structures can suffer strength degradation, potentially causing structural failure, especially in beam elements under bending moments and shear forces due to excessive loads or natural disasters. This study analyzes the behavior and shear capacity of reinforced concrete beams after being strengthened with ferrofoam concrete. Two specimens were tested: B-NP (normal-strengthened beam using natural aggregate) and B-LP (recycled-strengthened beam with 50% recycled concrete aggregate). Testing was conducted at 28 days. For comparison, data from unstrengthened beams (B-N and B-L) were taken from previous studies. B-N and B-L had maximum loads of 19.52 tons and 18.21 tons, with deflections of 8.99 mm and 15.28 mm, respectively. Crack patterns showed initial flexural cracks at 4 tons (0.89 mm deflection) for B-N and 3.2 tons (5.44 mm) for B-L, progressing diagonally to indicate shear failure. After experiencing shear failure, both beams were strengthened with wire mesh and ferrofoam concrete, then retested. B-NP sustained 20.45 tons with a deflection of 10.90 mm, while B-LP sustained 17.63 tons with a deflection of 9.34 mm. Initial cracks in B-NP and B-LP occurred at 2 tons and 2.4 tons, respectively, again showing shear failure. The results confirm that ferrofoam concrete improves shear capacity. However, performance depends on the aggregate type, with natural aggregate yielding better post-strengthening results than recycled aggregate.

Copyright

© 2025 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  - Nurul Bahagia
AU  - Abdullah Abdullah
AU  - Arief Panjaitan
PY  - 2025
DA  - 2025/12/26
TI  - Strengthening of Reinforced Concrete Beams Experiencing Shear Failure Using Ferofoam Concrete Plates
BT  - Proceedings of the 6th Aceh International Symposium on Civil Engineering (AISCE 2025)
PB  - Atlantis Press
SP  - 173
EP  - 184
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-952-0_15
DO  - 10.2991/978-94-6463-952-0_15
ID  - Bahagia2025
ER  -