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Assessment of a fire damaged reinforced concrete building
Arup Ghatak,P.N. Ojha,Singh Brijesh,Singh Abhishek,Reddy TVG,Mohapatra B N 아시아콘크리트학회 2021 Journal of Asian Concrete Federation Vol.7 No.1
A proper condition assessment of reinforced concrete structure after a fire event involves field and laboratory work to determine the extent of fire in order to design an appropriate and cost effective repair scheme. The present paper presents a case study where an attempt has been made to carry out a condition assessment of a fire damaged building in a systematic manner. The approach adopted broadly consisted of questioning of on-site personnel, a detailed visual survey, on-site non-destructive / partially-destructive tests, collection of in-situ samples from site along with some laboratory based investigations on samples collected from site. Differential Thermal Analysis (DTA), X-Ray Diffraction (XRD) Analysis and Scanning Electron Microscopy (SEM) Imaging were conducted for microstructural characterization and analysis of concrete to correlate, corroborate and validate the results obtained through on-site assessment. Since the building was an old structure, carbonation depth in structural members was also evaluated. Finally, based on the visual inspections indicating the condition of surface and structural elements such as spalling, exposure and condition of reinforcement, cracks, honeycombing etc. along with NonDestructive Test / Laboratory test results, the repair methodology of structural members are presented.