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Nde of Tendon Ducts in Concrete Using 3D-Saft

Published online by Cambridge University Press:  10 February 2011

M. Krause ,
H. Wiggenhauser ,
W. Müller  and
V. Schmitz
M. Krause
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Division VII.3, 12205 Berlin, Germany, [email protected] / [email protected]
H. Wiggenhauser
Affiliation:
Federal Institute for Materials Research and Testing (BAM), Division VII.3, 12205 Berlin, Germany, [email protected] / [email protected]
W. Müller
Affiliation:
Fraunhofer Institute for Non-Destructive Testing, University, Building 37, 66123 Saarbrüicken, Germany, [email protected] / [email protected]
V. Schmitz
Affiliation:
Fraunhofer Institute for Non-Destructive Testing, University, Building 37, 66123 Saarbrüicken, Germany, [email protected] / [email protected]
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Abstract

Prestressed or post-tensioned concrete structures are vulnerable to hazardous corrosion, if the tendon ducts are not fully injected with grout. Also compaction faults reduce the concrete strength. Advanced ultrasonic testing techniques and data analysis have been utilized to evaluate ducts in concrete members nondestructively. A laser Doppler vibrometer is used as an ultrasonic receiver to automatically collect the data. With this method ducts could be investigated which are not accessible by other methods as radiography or impact-echo. Encouraging results on different specimens are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 503: Symposium JJ – Nondestructive Characterization of Materials in Aging Systems , 1997 , 237
Copyright
Copyright © Materials Research Society 1998

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References

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