Deformation of bitumen based porous material: Experimental and numerical analysis

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This paper presents a theoretical and experimental work aiming at understanding the mechanical behaviour of Bituminized Waste Product (BWP). This material is considered for this purpose as a mixture of bitumen and crystals of sodium nitrate. For BWP, both bitumen and crystals contribute to the creep deformations. In this study, an attempt is made to develop an elasto-viscoplastic model that describes the creep behaviour of BWP considering the constituents’ creep behaviour. An experimental program has been set up to get insight in the material response. The elasto-viscoplastic constitutive model has been implemented into a finite element program. The modelling results have been compared with the experimental data.


Original languageEnglish
Pages (from-to)144-153
JournalJournal of Nuclear Materials
Issue number2
Publication statusPublished - Jul 2010


  • Bituminized Waste Product (BWP), sodium nitrate, creep deformation, odometer cell, elasto-viscoplastic constitutive model, finite elements, modelling

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