Towards prediction of the thermal spalling risk through a multi-phase porous media model of concrete

D. Gawin, F. Pesavento, B. A. Schrefler

Research output: Contribution to journalArticle

103 Scopus citations

Abstract

Physical phenomena in heated concrete, leading to thermal spalling are discussed. Contribution of the stored elastic energy and vapour pressure build-up to the kinetic energy of spalled concrete pieces is estimated. A mathematical model of hygro-thermo-chemo-mechanical phenomena in heated concrete is presented. Different simplified models of thermal spalling are used to define special indexes, aiming for quantitative assessment of its risk. These are tested for the results of numerical simulations based on an experimental test. A simplified energy analysis to estimate the kinetic energy of spalled concrete pieces and to make predictions about explosive or non-violent character of the phenomenon is proposed.

Original languageEnglish (US)
Pages (from-to)5707-5729
Number of pages23
JournalComputer Methods in Applied Mechanics and Engineering
Volume195
Issue number41-43
DOIs
StatePublished - Aug 15 2006

Keywords

  • Concrete
  • Damage
  • Fracture
  • High temperature
  • Porous media
  • Spalling

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Mechanics

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