Innovative method used to evaluate the effect of power washing on marine concrete – a UK site study
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.
Document Type: Research Article
Publication date: 01 July 2013
- Official Journal of The British Institute of Non-Destructive Testing - includes original research and development papers, technical and scientific reviews and case studies in the fields of NDT and CM.
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