# Flexural Behavior of Reinforced Concrete Beams with Varying Carbon Content in Steel
> Marsella A.A.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105037623448
Jurnal / Konferensi: Engineering Technology and Applied Science Research
Tahun terbit: 2026
DOI: https://doi.org/10.48084/etasr.16551
ISSN: 22414487
Kuartil SJR: Q2
Citations: 0

## Authors
- Marsella A.A.

## Abstract
This study examines the influence of carbon content in reinforcing steel on the flexural behavior of reinforced concrete beams subjected to two-point loading. Three categories of reinforcing steel were investigated: low-carbon (0.302%), medium-carbon (0.318%), and high-carbon (0.411%), with three beam specimens tested for each type. The average ultimate loads (Pu) were 48.78 kN for Low-Carbon Bars (LCB), 57.39 kN for Medium-Carbon Bars (MCB), and 62.28 kN for High-Carbon Bars (HCB). The corresponding average mid-span deflections at ultimate load were 85.14 mm, 51.09 mm, and 47.72 mm, respectively. An increase in carbon content resulted in an approximately 28% increase in ultimate strength from LCB to HCB, accompanied by a 54% reduction in ductility (μ). In terms of structural response, LCB beams exhibited significant plastic deformation and gradual flexural crack development, indicating high energy dissipation capacity. MCB beams demonstrated a balanced combination of strength and ductility. In contrast, HCB beams achieved the highest strength but exhbited limited post-yield deformation and more pronounced crack localization.

## Keywords
- Flexural strength
- Materials science
- Ductility (Earth science)
- Composite material
- Beam (structure)
- Reinforced concrete
- Deformation (meteorology)
- Dissipation
- Carbon fibers
- Ultimate tensile strength
- Ultimate load
- Structural engineering
- Reduction (mathematics)
- Strength of materials
- Carbon steel
- Strength reduction
- Peak load

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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