• Heckert, Mirko
• Enghardt, Stefan
• Bauch, Juergen
• Dinkelaker, Max
• Liebschner, Mandy
• Schladitz, Frank

Abstract

Examination of concrete samples with CFRP and GFRP reinforcement by X-ray computed tomography and laminography – concrete samples with CFRP and GFRP reinforcement. Non-metallic reinforcements are already widely used in concrete construction today. Up to now, material testing has mainly been carried out under destructive conditions. As a consequence, the position of the reinforcement within the concrete matrix is determined by inspection and measurement of saw cut interfaces. Imaging procedures as X-ray computed tomography (XCT) and laminography (XCL) enable the nondestructive evaluation and location of carbon and glass fiber reinforcements within the volume of a concrete structure platform. The concrete cover as well as the yarn cross-section, spacing and the position of the reinforcement can be determined in the concrete matrix by XCT, the latter with a deviation of < 0.2 mm in comparison with the destructive control measurements of the previous method by means of a measuring microscope. A special combination of limited-angle X-ray computed tomography (LAT) followed by XCL has been shown to increase the detailed recognition of the reconstructed sectional images compared to the individual procedures.

Topics

• impedance spectroscopy
• Carbon
• tomography
• glass
• glass