Journal ArticleDOI
Numerical analysis of hygro-thermal behaviour and damage of concrete at high temperature
TLDR
In this article, a computational analysis of hygro-thermal and mechanical behavior of concrete structures at high temperature is presented, and the evaluation of thermal, hygral and mechanical performance of this material, including damage effects, needs the knowledge of the heat and mass transfer processes.Abstract:
A computational analysis of hygro-thermal and mechanical behaviour of concrete structures at high temperature is presented. The evaluation of thermal, hygral and mechanical performance of this material, including damage effects, needs the knowledge of the heat and mass transfer processes. These are simulated within the framework of a coupled model where non-linearities due to high temperatures are accounted for. The constitutive equations are discussed in some detail. The discretization of the governing equations is carried out by Finite Elements in space and Finite Differences in time. Copyright © 1999 John Wiley & Sons, Ltd.read more
Citations
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Numerical modelling and experimental assessment of concrete spalling in fire
TL;DR: In this paper, a numerical model has been developed, which takes into account main characteristics of the real phenomenon of concrete spalling in fire to improve the stability, robustness and calculation time of the model analysis.
Journal ArticleDOI
Experimental investigation of physical, thermal, hygral and mechanical properties of cementitious composites at high temperatures
TL;DR: In this article, the authors present the results of an experimental program that compares the material properties of various types of cementitious composites subjected to high temperatures, including bulk density, porosity, thermal conductivity, specific heat capacity, permeability and compressive strength of the materials.
Journal ArticleDOI
Modelling and numerical simulation of concrete structures subject to high temperatures
Lars Ostermann,Dieter Dinkler +1 more
TL;DR: In this article, a model based on the physical processes in concrete subject to high temperatures was developed in the framework of continuum damage mechanics and the theory of porous media and demonstrated on selected structures.
Journal ArticleDOI
A Hygro-Thermo-Mechanical Multiphase Model for Long-Term Water Absorption into Air-Entrained Concrete
TL;DR: In this paper, the presence of air pores significantly affects the absorption of water into concrete structures in cold climates and in contact with free water are cast with air-entrained concrete.
References
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Book
The finite element method
TL;DR: In this article, the methodes are numeriques and the fonction de forme reference record created on 2005-11-18, modified on 2016-08-08.
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Dynamics of fluids in porous media
TL;DR: In this paper, the Milieux poreux Reference Record was created on 2004-09-07, modified on 2016-08-08 and the reference record was updated in 2016.
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Hydraulics of Groundwater
TL;DR: The reference record was created on 2004-09-07, modified on 2016-08-08 as discussed by the authors, using the reference record of the Ecoulement souterrain reference record.
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Dynamics of fluids in porous media
TL;DR: In this article, the authors present the definitive work on the subject by one of the world's foremost hydrologists, designed primarily for advanced undergraduate and graduate students of ground water hydrology, soil mechanics, soil physics, drainage and irrigation engineering and sanitary, petroleum and chemical engineering.
Book ChapterDOI
Simultaneous Heat, Mass, and Momentum Transfer in Porous Media: A Theory of Drying
TL;DR: In this article, the authors present a general theory that provides a starting point for the construction of special theories so that various drying processes can be studied analytically without recourse to an enormous computational effort.