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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Journal ArticleDOI
Research progress on numerical models for self‐healing cementitious materials
TL;DR: In this paper, the authors provide a summary of current self-healing techniques along with descriptions of the processes that govern their behaviour, and a considerable section is devoted to the simulation of carbonation in concrete since the essential mechanisms that govern this process are applicable to SH systems that employ calcite as a healing material.
Journal ArticleDOI
Numerical simulation of polypropylene fibres in concrete materials under fire conditions
TL;DR: The role of polypropylene fibres on concrete at high temperature is numerically evaluated in this paper, where an appropriate hygro-thermal FE code is developed to such a scope.
Journal ArticleDOI
Heat transfer mechanisms and models for a gypsum board exposed to fire
TL;DR: In this article, the effects of vapour transport and condensation are included to improve the simulations of gypsum boards, and it is shown that without condensation, a mechanism similar to a heat pipe is able to reproduce the observed temperature plateau at the unexposed face at around 100°C.
Journal ArticleDOI
Decontamination of Radionuclides from Concrete by Microwave Heating. I: Theory
Zdeněk P. Bažant,Goangseup Zi +1 more
TL;DR: In this article, the authors proposed a scheme of decontamination of radionuclides from concrete structures, in which rapid microwave heating is used to spall off a thin contaminated surface layer.
Journal ArticleDOI
Coupled transport and poro-mechanical properties of a heat-treated mortar under confinement
TL;DR: In this article, an experimental investigation was conducted on a mortar heated/cooled up to 105, 200, 300 or 400°C and the authors concluded that the irreversible pore closure of heat-treated mortar is related to that of micro-cracks mainly located at the paste/aggregate interface.
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.
Book
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.
Book
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.
Book
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.