This book gathers the peer-reviewed papers presented at the 17th International Conference on Alkali-Aggregate Reaction in Concrete (ICAAR), held in Ottawa, Ontario, Canada, on May 19-24, 2024. It highlights the latest advances and innovations in the field of internal swelling reactions, particularly alkali-aggregate reaction (AAR), and combined mechanisms such as delayed ettringite formation (DEF). The conference topics encompass understanding the reaction mechanisms and the affecting factors; testing methods and preventative measures; diagnosis, evaluation, and prognosis; monitoring and NDT; structural effects and modeling at all scales; repair and remedial measures; and combined mechanisms (e.g., DEF). The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.

Highlights the latest advances in alkali-aggregate reaction in concrete Bridges the gap between scientific research and applied engineering, and between micro and macro scales Written by leading experts in the field

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Evaluation of the non-destructive character of the stiffness damage test for damage assessment of concrete structures affected by alkali-silica reaction using acoustic emission.- Effectiveness of non-destructive testing methods to assess concrete sleepers affected by internal swelling reactions (ISR).- Monitoring of damage due to alkali silica reaction in concrete at different temperatures by using non-destructive testing methods.- Efficiency of the dynamic resonance frequency in assessing ASR induced damage at numerous exposure conditions.- Assessment of ASR-induced expansion and deterioration in conventional concrete incorporating a highly reactive coarse aggregate via resonant ultrasound spectroscopy coupled with imaging techniques.- Measuring alkali-silica reaction expansion in concrete with optical fiber sensors.- ASR-induced damage detected by site air-permeability tests.- Damage quantification through digital images of cracked concrete surfaces presenting anisotropic behaviour.