Innovative method used to evaluate the effect of power washing on marine concrete – a UK site study

Hughes, P, Fairhurst, D, Sherrington, I, Renevier, Nathalie orcid iconORCID: 0000-0003-2471-7236 and Morton, G (2013) Innovative method used to evaluate the effect of power washing on marine concrete – a UK site study. Insight - Non-Destructive Testing and Condition Monitoring, 55 (7). pp. 382-386. ISSN 13542575

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Official URL: http://dx.doi.org/10.1784/insi.2012.55.7.382

Abstract

At a study site on the north west coast of England, concrete revetment armour that has been power washed on a regular basis has been monitored for surface changes over three years. Three tests have been utilised. Replication was employed as a means of measuring surface roughness of the concrete surfaces and lays the foundation for the development of a new non-destructive testing (NDT) method for concrete surface analysis. Surface roughness doubled from Sa 12.29 μm, increasing to Sa 24.67 μm in three years. A Schmidt/rebound hammer test has also been used throughout the research to evaluate the surface hardness of the concrete, and has demonstrated a significant deterioration in the concrete surface after three years. Ultrasonic pulse velocity (UPV) testing, used to measure the sound velocity of the concrete, has also implied degradation.


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