1. bookVolume 58 (2018): Issue 1 (June 2018)
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30 Sep 2018
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English
access type Open Access

Long-term Influence of Concrete Surface and Crack Orientation on Self-healing and Ingress in Cracks – Field Observations

Published Online: 01 Dec 2018
Page range: 1 - 16
Received: 12 Mar 2018
Accepted: 03 May 2018
Journal Details
License
Format
Journal
First Published
30 Sep 2018
Publication timeframe
2 times per year
Languages
English
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.

Keywords

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