Modelling of coupled multifield problems in concrete by means of porous media mechanics

F. Pesavento, B. A. Schrefler, D. Gawin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A mathematical and numerical model to predict the non-linear behaviour of concrete as a multiphase porous material is proposed. The model can be usefully applied to several practical cases: evaluation of concrete performance in the high temperature range, e.g. during fire, to early stages of maturing of massive concrete structures, to shotcrete in tunnelling, and to durability processes (e.g. leaching/carbonation). All the important phase changes of water and chemical reactions, i.e. adsorption-desorption, condensation-evaporation, and hydration-dehydration, skeleton dissolution/carbonation as well as the related heat and mass sources or sinks are considered. Changes of the material properties caused by temperature and pressure changes, concrete damage, carbonation, leaching, fresh concrete hardening, as well as coupling between thermal, hygral, chemical and mechanical phenomena are taken into account. This model further allows to incorporate sorption hysteresis. Some relevant applications of the model will be shown in this work.

Original languageEnglish (US)
Title of host publicationProceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures - Fracture Mechanics of Concrete and Concrete Structures
Pages485-493
Number of pages9
Volume1
StatePublished - Dec 1 2007
Event6th International Conference on Fracture Mechanics of Concrete and Concrete Structures - Fracture Mechanics of Concrete and Concrete Structures - Catania, Italy
Duration: Jun 17 2007Jun 22 2007

Other

Other6th International Conference on Fracture Mechanics of Concrete and Concrete Structures - Fracture Mechanics of Concrete and Concrete Structures
CountryItaly
CityCatania
Period6/17/076/22/07

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction

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