Ageing effects of alkali-silica reaction in concrete structures

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Abstract

The alkali-silica reaction (ASR) is a long-term deterioration process, which produces a hydrophilic and expansive gel causing damage. The ASR acts on concrete as an ageing phenomenon, modifying the material on the basis of its stress state. Focussing on the mechanical degradation of concrete, estimated trends for the mechanical properties in free expansive affected concrete arepresented. These show the result of recent research which collected and statistically analysed laboratory tests on 54 concrete mixes performed by 11 authors. Comparable findings are also obtained through a multiscale material model, which aims to capture the micro and macro aspects of the problem. The ASR-affected concrete is seen as an evolving material, whose state should be followed over time taking into account chemomechanical coupling.
Original languageEnglish
Title of host publicationProceedings of the International Conference on Ageing of Materials and Structures AMS 14
Subtitle of host publicationDelft, The Netherlands
EditorsK. van Breugel
PublisherDelft University of Technology
Pages1-7
Number of pages7
Publication statusPublished - 2016
Event1st International Conference on Ageing of Materials and Structures - Aula, Delft, Netherlands
Duration: 26 May 201428 May 2014
Conference number: 1
http://www.citg.tudelft.nl/nl/actueel/agenda/event/detail/ams14-conference-ageing-of-materials-structures/

Conference

Conference1st International Conference on Ageing of Materials and Structures
Abbreviated titleAMS14
CountryNetherlands
CityDelft
Period26/05/1428/05/14
Other978-94-6186-314-0
Internet address

Keywords

  • Alkali-Silica Reaction (ASR)
  • degradation, mechanical properties
  • damage assessment
  • multiscale modelling

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