Ageing effects of alkali-silica reaction in concrete structures

Ageing effects of alkali-silica reaction in concrete structures

Esposito, R. (TU Delft Applied Mechanics)
Hendriks, M.A.N. (TU Delft Applied Mechanics)

van Breugel, K. (editor)

2016

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.

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

http://resolver.tudelft.nl/uuid:518b3f8d-a196-48a1-a5e0-58d132f6fe9b

Delft University of Technology

Proceedings of the International Conference on Ageing of Materials and Structures AMS 14: Delft, The Netherlands

1st International Conference on Ageing of Materials and Structures, 2014-05-26 → 2014-05-28, Aula, Delft, Netherlands

Institutional Repository

conference paper

© 2016 R. Esposito, M.A.N. Hendriks