Capabilities of non-destructive testing of RC structures–quality assurance for crack repairusing ultrasonic echo

Friese, Martin; Effner, Ute; Mielentz, Frank; Helmerich, Rosemarie

doi:10.1201/b10430-223

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Non-destructive Testing (Ndt) Of Cracks In Concrete1

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2018

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“…The ultrasonic echo method has also been used to investigate the differences between the detection of empty and repaired cracks [17].…”

Section: Non-destructive Testing (Ndt) Of Cracks In Concretementioning

confidence: 99%

Controlled Creating of Cracks in Concrete for Non-destructive Testing

et al. 2018

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The non-destructive assessment of cracks in concrete is a common task for which non-destructive evaluation solutions have been published. Primarily, these tests have been carried out on artificial cracks that have been created by using notches instead of natural cracks. This study evaluates a procedure designed to create reproducible and controlled cracks in concrete. The procedure is based on using expanding mortar in a series of blind holes. This is done in combination with carefully aligned reinforcement to guide the direction of the crack development. The depth of the crack is also controlled by reinforcement. Crack depth varies statistically in the range of the maximum aggregate size (16 mm) used for concrete.

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“…The ultrasonic echo method has also been used to investigate the differences between the detection of empty and repaired cracks [17].…”

Section: Non-destructive Testing (Ndt) Of Cracks In Concretementioning

confidence: 99%