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All Journal AGREGAT
Abdillah Ramadhan, Tegar
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Structural Performance Analysis of Post-Fire Reinforced Concrete Buildings Using Hammer Test Method and ETABS Modeling Susanto, Willy; Abdillah Ramadhan, Tegar; Ahmad, Raudah; Kamil, Insan; Ahmad Firdaus, Gusti
AGREGAT Vol 10 No 2 (2025)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v10i2.29188

Abstract

Reassessing the structural integrity of reinforced concrete buildings after a fire is crucial to ensure the continued operation of healthcare facilities. This study evaluates the structural performance of a multi-story hospital building that sustained significant fire damage by integrating non-destructive testing using a rebound hammer and finite element modeling in ETABS. The test results indicated substantial variations in residual concrete strength across structural elements: the average strengths of columns and beams were 25.95 MPa and 22.51 MPa, respectively, while floor slabs showed drastic reductions on fire-affected levels, ranging from 11.82 MPa to 51.42 MPa on unaffected floors. Structural modeling with these degraded material properties demonstrated that column stresses remained within acceptable limits, whereas 69% of the second-floor slabs and several beams on upper floors exceeded permissible stress thresholds. Consequently, the rehabilitation strategy prioritizes strengthening the floor slabs and enhancing beam capacity, while column replacement is not required. This approach enables cost- and time-efficient recovery without compromising structural safety.
Co-Authors Ahmad Firdaus, Gusti Ahmad, Raudah Kamil, Insan Susanto, Willy