AGREGAT
Vol 10 No 2 (2025)

Structural Performance Analysis of Post-Fire Reinforced Concrete Buildings Using Hammer Test Method and ETABS Modeling

Susanto, Willy (Unknown)
Abdillah Ramadhan, Tegar (Unknown)
Ahmad, Raudah (Unknown)
Kamil, Insan (Unknown)
Ahmad Firdaus, Gusti (Unknown)



Article Info

Publish Date
29 Nov 2025

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.

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Journal Info

Abbrev

agregat

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Engineering Transportation

Description

AGREGAT is a journal of Department of Civil Engineering, University of Muhammadiyah Surabaya. The journal will be published in every May and November yearly. The journal consists of result of research, literature review, and case reports created as realization of Tridharma ...