Intrinsic permeability evolution in high temperature concrete: An experimental and numerical analysis

S. Dal Pont; B. A. Schrefler; A. Ehrlacher

doi:10.1007/s11242-004-3252-y

Intrinsic permeability evolution in high temperature concrete: An experimental and numerical analysis

S. Dal Pont, B. A. Schrefler, A. Ehrlacher

Research output: Contribution to journal › Article

16 Scopus citations

Abstract

This paper presents an experimental and thermo-hydro-chemical-mechanical numerical analysis of concrete at high temperatures, aiming at the definition of a law describing the evolution of intrinsic permeability. The evaluation of heat and mass transfers, evolution of the phases composing the porous medium, and mechanical performances of concrete are taken into account in a full three phases coupled analysis. An experimental set-up and a numerical simulation are then presented. A hollow cylinder has been heated up to 523.15 K (250 °C) on the internal side and subjected to gas pressure/temperature measurements; the experience has been then simulated by means of a numerical code. The analysis has allowed for the definition of an original relationship describing intrinsic permeability evolution. Finally, the law has been validated measuring the actual value of intrinsic permeability on heated concrete.

Original language	English (US)
Pages (from-to)	43-74
Number of pages	32
Journal	Transport in Porous Media
Volume	60
Issue number	1
DOIs	https://doi.org/10.1007/s11242-004-3252-y
State	Published - Jul 2005

Keywords

Chemical dehydration
Concrete hollow cylinder
Damage
Intrinsic permeability
Numerical and experimental finite element analysis

ASJC Scopus subject areas

Chemical Engineering(all)
Catalysis

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abstract = "This paper presents an experimental and thermo-hydro-chemical-mechanical numerical analysis of concrete at high temperatures, aiming at the definition of a law describing the evolution of intrinsic permeability. The evaluation of heat and mass transfers, evolution of the phases composing the porous medium, and mechanical performances of concrete are taken into account in a full three phases coupled analysis. An experimental set-up and a numerical simulation are then presented. A hollow cylinder has been heated up to 523.15 K (250 °C) on the internal side and subjected to gas pressure/temperature measurements; the experience has been then simulated by means of a numerical code. The analysis has allowed for the definition of an original relationship describing intrinsic permeability evolution. Finally, the law has been validated measuring the actual value of intrinsic permeability on heated concrete.",

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AB - This paper presents an experimental and thermo-hydro-chemical-mechanical numerical analysis of concrete at high temperatures, aiming at the definition of a law describing the evolution of intrinsic permeability. The evaluation of heat and mass transfers, evolution of the phases composing the porous medium, and mechanical performances of concrete are taken into account in a full three phases coupled analysis. An experimental set-up and a numerical simulation are then presented. A hollow cylinder has been heated up to 523.15 K (250 °C) on the internal side and subjected to gas pressure/temperature measurements; the experience has been then simulated by means of a numerical code. The analysis has allowed for the definition of an original relationship describing intrinsic permeability evolution. Finally, the law has been validated measuring the actual value of intrinsic permeability on heated concrete.

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