Crack closure assessment in cementitious mixtures based on ultrasound measurements

Onderzoeksoutput: Conference paperResearch

Samenvatting

Cracking of cementitious materials poses severe problems for the mechanical performance and the durability of concrete structures. Self-healing cementitious materials provide a means of countering these issues, but the testing procedures to assess the self-healing efficiency are mostly impractical for in-situ evaluation. This study concerns the evaluation of the crack closure in cementitious mixtures with and without superabsorbent polymers by ultrasound measurements. Ultrasonic waves are sent through the cracks by means of pencil lead break tests, thereby offering information on the sound material as well as on the healing products formed within the cracks. The healing process is promoted by placing the specimens in wet-dry curing cycles and is monitored for a period of 14 days. Ultrasound was found to be sensitive to the closure of cracks, which was confirmed by the visual reduction in crack width opening, as investigated by microscopic analysis.

Originele taal-2English
TitelProceedings of the 75th RILEM Annual Week 2021: Advances in Sustainable Construction Materials and Structures
UitgeverijSpringer
Pagina's838-845
Aantal pagina's8
DOI's
StatusPublished - 2023
EvenementProceedings of the 75th RILEM Annual Week 2021: Advances in Sustainable Construction Materials and Structures - Merida, Mexico
Duur: 29 aug 20213 sep 2021
https://www.rilem.net/global/gene/link.php?news_link=2021150643_75th-rilem-week-report-3.pdf&fg=1

Publicatie series

NaamRILEM Bookseries
Volume40
ISSN van geprinte versie2211-0844
ISSN van elektronische versie2211-0852

Conference

ConferenceProceedings of the 75th RILEM Annual Week 2021: Advances in Sustainable Construction Materials and Structures
Land/RegioMexico
StadMerida
Periode29/08/213/09/21
Internet adres

Bibliografische nota

Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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