Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete

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

Inhalt

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.