Modeling ASR/DEF Expansion Strains in Large Reinforced Concrete Specimens
Publication: Journal of Structural Engineering
Volume 144, Issue 7
Abstract
A recent alkali silica reaction (ASR)/delayed ettringite formation (DEF) expansion model was modified to account for the load-induced precracks within a structure. Factors such as the orientation of the exposure face, the reinforcement details, and the location of the strain measurements were also considered. The model was implemented for environmentally exposed large-scale reinforced concrete specimens. The model provided a satisfactory simulation of the expansion results, with most results within the extremities of the measured data. The model successfully simulated the expansion strains inside and outside the development length zone. The expansion induced by ASR/DEF deterioration mechanisms in large structural concrete members could be effectively modeled using the minimalist semiempirical formulation.
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Acknowledgments
The work presented was part of the first author’s Ph.D. dissertation under the supervision of Prof. John B. Mander and Prof. Stefan Hurlebaus. The experimental part of the project was made possible through the financial support from the Texas Department of Transportation and Federal Highway Administration (Grant No. 0-5997).
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©2018 American Society of Civil Engineers.
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Received: May 30, 2017
Accepted: Nov 1, 2017
Published online: May 8, 2018
Published in print: Jul 1, 2018
Discussion open until: Oct 8, 2018
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