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

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

Holthuizen, Patrick (TU Delft Materials and Environment)
Zhou, Y. (TU Delft Concrete Structures)
Šavija, B. (TU Delft Materials and Environment)
Copuroglu, Oguzhan (TU Delft Materials and Environment)

Sanchez, Leandro F.M. (editor)
Trottier, Cassandra (editor)

2024

The Stiffness Damage Test (SDT), a cyclic test in compression, is considered as a reliable tool for assessing concrete structures affected by ASR. Depending on the extent of ASR damage in concrete, loading levels up to 40% of the compressive strength may contribute to increasing internal damage during testing. Nevertheless, previous research found that no additional damage was induced by the SDT. This confirmed the non-destructive character of the SDT making it valid to determine the compressive strength on the same test specimens following the SDT. However, other research suggests that loading levels above 15% of the compressive strength could lead to load-induced damage in the first load cycle. The implication of the non-destructive character and the loading level of the SDT needs more attention, especially when testing anisotropically ASR-damaged concrete structures. This paper thus presents a critical evaluation of the non-destructive character of the SDT by utilizing Acoustic Emission (AE) measurements. The SDT was used to evaluate an ASR affected concrete structure after 60 years in use. Several cores from cantilever slabs were extracted enabling damage assessment of the concrete structure in use. AE allowed to measure crack occurrence with a higher accuracy. Therefore, the critical load level could be more accurately identified using AE. The magnitude of enhancing internal damage during the SDT is related to the extent of ASR. From this study it can be concluded that the non-destructive character of the stiffness damage test depends the critical load level in relation to the internal degree of damage, which can be determined by means of Acoustic Emission.

Acoustic emission
Alkali-Silica reaction
Damage assessment
Non-destructive testing
Stiffness damage test

http://resolver.tudelft.nl/uuid:9be89e13-4c19-4c53-91d6-41049a6db261

https://doi.org/10.1007/978-3-031-59349-9_1

Springer Science and Business Media B.V.

2024-11-06

978-3-031-59351-2

Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete: ICAAR 2024 - Volume II

RILEM Bookseries, 2211-0844, 50

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

book chapter

© 2024 Patrick Holthuizen, Y. Zhou, B. Šavija, Oguzhan Copuroglu