Modelling the behaviour of polymer coated reinforced concrete panels subjected to blast loads

S. N. Raman, T. Pham, T. Ngo, P. Mendis

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper presents the findings of numerical modelling on the behaviour of reinforced concrete (RC) panels retrofitted with polymer coatings when subjected to blast loads. The analysis was undertaken via the finite element (FE) code LS-DYNA, using the Lagrangian FE approach with explicit time integration. The FE modelling was undertaken to simulate an experimental blast trial that will be undertaken by the authors in Vietnam. The dimensions of all the panels modelled were 1700 × 1000 × 60 mm. Several polyurea coated panels with varying thicknesses and locations of polyurea coatings were modelled and analysed with LS-DYNA. The behaviour of these retrofitted panels under blast loads from the detonation of 2 kg Ammonite explosive at 1.6 m stand-off, were compared with the behaviour of a control (unretrofitted) bare RC panel. The results obtained were evaluated in terms of panel deformation, displacement-time history and panel damage profile. The findings of the FE analysis indicate that under blast loading conditions, the RC panels coated with polyurea performed much better than the bare RC panel. The resistance of the panels to blast was only marginally improved when the thickness of the polyurea coatings was increased. It was also evident that applying the polyurea coating on the tension face of the panel was more pronounced in terms of panel displacement and deformation control.

Original languageEnglish
Pages497-504
Number of pages8
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Shock and Impact Loads on Structures 2009 - Adelaide, Australia
Duration: 2 Dec 20094 Dec 2009
Conference number: 8th

Conference

ConferenceInternational Conference on Shock and Impact Loads on Structures 2009
Country/TerritoryAustralia
CityAdelaide
Period2/12/094/12/09

Keywords

  • Blast loads
  • Finite element (FE)
  • Polymer
  • Reinforced concrete (RC)
  • Retrofitting

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