Abstract
Alkali-silica reactivity (ASR) has been recognized as one of the most deleterious phenomena in concrete. In fact, ASR can cause significant loss of mechanical properties and cracking in concrete structures that could lead to structural failure. The challenge now exists in evaluating the degree of the ASR damage in existing structures so that informed decisions can be made toward mitigating ASR progression and damage. Reliable methods and tools are needed in order to evaluate the condition of ASR affected structures. This evaluation includes (a) tests to determine the degree of expansion that has already occurred; (b) the degree of expansion that can be expected; and (c) the rate at which that expansion can take place.
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References
EPRI.: Evaluation of Laboratory Tests to Detect Up-to-Date Expansion and Remaining Expansion in Concrete Structures Affected by Alkali-Silica Reaction. Technical report 3002013192. Electric Power Research Institute (2018)
Acknowledgements
This study is part of a project conducted by the University of Tennessee Knoxville and funded by the Electric Power Research Institute (EPRI) entitled “Aging management of ASR affected structures”- EPRI report # 3002013192.
The authors would like to express their gratitude and sincere appreciation to Maria Guimaraes (a program manager at EPRI) for supporting this study and providing an aged ASR-affected slab as well as covering the costs of cores extracting and ship** for the purpose of round robin analysis.
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Abd-elssamd, A., Le Pape, S., John Ma, Z., le Pape, Y., Johnson, S. (2021). Round Robin for ASR Expansion. In: Saouma, V.E. (eds) Diagnosis & Prognosis of AAR Affected Structures. RILEM State-of-the-Art Reports, vol 31. Springer, Cham. https://doi.org/10.1007/978-3-030-44014-5_12
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DOI: https://doi.org/10.1007/978-3-030-44014-5_12
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