Long-term Influence of Concrete Surface and Crack Orientation on Self-healing and Ingress in Cracks – Field Observations
| Author(s): |
Tobias Danner
(MSc, PhD, Researcher, Norwegian University of Science and Technology , Department of Structural Engineering , Richard Birkelandsvei 1a, NO-7491 Trondheim)
Mette Rica Geiker (MSc, PhD, Professor, Norwegian University of Science and Technology , Department of Structural Engineering , Richard Birkelandsvei 1a, NO-7491 Trondheim) |
|---|---|
| Medium: | journal article |
| Language(s): | English |
| Published in: | Nordic Concrete Research, June 2018, n. 1, v. 58 |
| Page(s): | 1-16 |
| DOI: | 10.2478/ncr-2018-0001 |
| Abstract: |
This paper presents results from investigations on the long-term influence of concrete surface and crack orientation on ingress in cracks. Five reinforced concrete structures from Norway exposed to either de-icing salts or seawater have been investigated. Concrete cores were taken with and without cracks from surfaces with vertical and horizontal orientation. Carbonation in cracks was found on all de-iced structures, and a crack on a completely horizontal surface appeared to facilitate chloride ingress. Ingress of substances from seawater was found in all cracks from marine exposure. However, the impact of cracks on chloride ingress was unclear. Horizontal cracks on vertical surfaces appeared to facilitate self-healing. |
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10705870 - Published on:
19/02/2023 - Last updated on:
19/02/2023
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