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Magnetic detection of prestressing steel fractures in prestressed concrete
Author(s) -
Hillemeier B.,
Scheel H.
Publication year - 1998
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/(sici)1521-4176(199811)49:11<799::aid-maco799>3.0.co;2-g
Subject(s) - prestressed concrete , structural engineering , engineering , nondestructive testing , materials science , forensic engineering , physics , quantum mechanics
The paper deals with the remanent magnetism method (RM‐method) to identify unsafe prestressed structures concerning sudden collapses of structural components due to fractures of the prestressing steel. It describes the non‐destructive testing method that allows to localize fractures of single prestressing steel wires even in post‐tensioned tendons. The method uses the magnetic field of externally magnetized tendons, measured at the concrete surface. The parameters that determine the characteristic fracture signal have been studied and are reported. The method has been successfully applied on full size units.