Modeling of Thermomechanical Effects of Alkali-Silica Reaction
Publication: Journal of Engineering Mechanics
Volume 125, Issue 4
Abstract
In this paper, a nonlinear continuum theory is applied to model the thermomechanical behavior of concrete subjected to alkali-silica reaction. The reaction results in formation of silica gel around the aggregate particles, which expands triggering a progressive damage of the material. The expansion rate is assumed to be controlled by the alkali content, the magnitude of confining stress as well as the evolution of the temperature. The progress in the reaction is assumed to be coupled with degradation of the mechanical properties of concrete. First, the constitutive model describing the thermomechanical effects of the reaction, as recently developed by the second writer, is presented. Subsequently, numerical examples are provided to assess the performance of the proposed formulation. In particular, the model is applied to analyze different structural elements of the Beauharnois power plant, situated in Quebec, Canada.
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Published In
Journal of Engineering Mechanics
Volume 125 • Issue 4 • April 1999
Pages: 476 - 485
History
Received: Feb 4, 1998
Published online: Apr 1, 1999
Published in print: Apr 1999
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