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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Toward Macro-Modeling of Alkali-Silica Reaction-Affected Structures
Author(s): Anca C. Ferche, Daman K. Panesar, Shamim A. Sheikh, and Frank J. Vecchio
Publication: Structural Journal
Appears on pages(s): 1121-1129
Keywords: alkali-silica reaction; analysis; assessment; finite element; nonlinear analysis; reinforced concrete; structures
Abstract:Although much attention has been directed toward modeling alkali-silica reaction (ASR) since its first deleterious effects on concrete structures were identified 75 years ago, there remain many unresolved issues. Among them, according to CSA A864-00, is that conventional methods of analysis become invalid for the assessment of ASR-affected structures due to the induced anisotropy with regards to the mechanical properties of concrete. To address this need, an alternative procedure for nonlinear analysis of ASR-affected reinforced concrete structures is presented, implemented within the framework of finite-element programs developed for the analysis of membrane and three-dimensional structures. Reinforced concrete is treated as an orthotropic material based on a smeared rotating crack model within the context of a total-load secant-stiffness macro-modeling approach. Verification is provided through analyses of reinforced concrete beams with behavior governed by either flexural or shear mechanisms.
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