Heating temperature prediction of concrete structure damaged by fire using a Bayesian approach

Hae-Chang Cho, Sun-Jin Han, Inwook Heo, Hyun Kang, Won-Hee Kang, Kang Su Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A fire that occurs in a reinforced concrete (RC) structure accompanies a heating temperature, and this negatively affects the concrete material properties, such as the compressive strength, the bond between cement paste and aggregate, and the cracking and spalling of concrete. To appropriately measure the reduced structural performance and durability of fire-damaged RC structures, it is important to accurately estimate the heating temperature of the structure. However, studies in the literature on RC structures damaged by fire have focused mostly on structural member tests at elevated temperatures to ensure the fire resistance or fire protection material development; studies on estimating the heating temperature are very limited except for the very few existing models. Therefore, in this study, a heating temperature estimation model for a reinforced concrete (RC) structure damaged by fire was developed using a statistical Bayesian parameter estimation approach. For the model development, a total of 77 concrete test specimens were utilized; based on them, a statistically highly accurate model has been developed. The usage of the proposed method in the framework of the 500 ◦C isotherm method in Eurocode 2 has been illustrated through an RC column resistance estimation application.
Original languageEnglish
Article number4225
Number of pages17
JournalSustainability
Volume12
Issue number10
DOIs
Publication statusPublished - 2020

Open Access - Access Right Statement

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Keywords

  • Bayesian statistical decision theory
  • fires
  • reinforced concrete construction
  • temperature

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