Multiscale numerical simulation of thermo-hygral alkali-silica reaction in concrete under the influence of mechanical loading

Zarina Itam, C. Koenke, J. Stark

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

Abstract

This research aims to model ASR gel expansion in concrete under the influence of hygral and thermal loading. ASR provokes a heterogeneous expansion in concrete leading to dimensional changes and eventually the premature failure of the concrete structure. Factors that influence ASR are parameters like cement alkalinity, the amount of deleterious silica from aggregate, porosity, and external factors like temperature, humidity and external source of alkali from ingression of de-icing salts. The problem is formulated as a multi-field problem, combining heat and fluid transfer and the damage model with mechanical stress field. Simulation is performed as a mesoscale model considering aggregates and mortar matrix. Expansion strain values will be determined from concrete prism tests. The resulting model will be able to predict the rate of ASR expansion and the cracking propagation that arise.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Engineering Computational Technology
Publication statusPublished - 01 Dec 2010
Event7th International Conference on Engineering Computational Technology, ECT 2010 - Valencia, Spain
Duration: 14 Sep 201017 Sep 2010

Publication series

NameProceedings of the 7th International Conference on Engineering Computational Technology

Other

Other7th International Conference on Engineering Computational Technology, ECT 2010
CountrySpain
CityValencia
Period14/09/1017/09/10

All Science Journal Classification (ASJC) codes

  • Computer Science(all)

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    Itam, Z., Koenke, C., & Stark, J. (2010). Multiscale numerical simulation of thermo-hygral alkali-silica reaction in concrete under the influence of mechanical loading. In Proceedings of the 7th International Conference on Engineering Computational Technology (Proceedings of the 7th International Conference on Engineering Computational Technology).