Modelling of concrete degradation due to Alkali - Silica reaction in variable hygro-thermal conditions

D. Gawin, W. Grymin, F. Pesavento, L. Simoni, B. A. Schrefler

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

Abstract

Durability of cement based materials in normal and chemically aggressive environment has been an important subject of research in recent two decades. Several mathematical models have been developed for predicting the service life of concrete structures. Different chemical degradation processes are considered, including also those due to the Alkali - Silica Reaction (ASR). Most of the models describing the latter process are based on a phenomenological approach. Here a mechanistic-type approach to mathematical modelling of chemical degradation of concrete, based on mechanics of multiphase porous media, due to combined action of hygro-thermal, chemical and mechanical loads, is presented. Then the model has been applied to the concrete degradation due to ASR reaction and the sensitivity analysis of the model for variations of some selected material parameters, has been performed.

Original languageEnglish (US)
Title of host publicationECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers
Pages7802-7821
Number of pages20
StatePublished - Dec 1 2012
Event6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 - Vienna, Austria
Duration: Sep 10 2012Sep 14 2012

Other

Other6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012
CountryAustria
CityVienna
Period9/10/129/14/12

Keywords

  • Chemical damage
  • Concrete
  • Multiphysics
  • Silica-alkali reaction
  • Two stage process

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Applied Mathematics

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