Investigations on hydrogen-induced embrittlement of quenched and tempered prestressing steels

Mietz, J.

doi:10.1002/(sici)1521-4176(200002)51:2<80::aid-maco80>3.0.co;2-a

Cited by 15 publications

(11 citation statements)

References 11 publications

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“…The results [30,32,35] showed that these quenched and tempered prestressing steels of the ªold typeº (i.e. without Cr-alloying and manufactured until 1965) as well as comparable steels from the former GDR do not pass the test without fracture and are to be classified as ªnot approvableº according to today's standards.…”

Section: Test Methods With Electrolyte Solution Representative Of Actumentioning

confidence: 99%

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Assessment of test methods for evaluation stress corrosion cracking susceptibility of prestressing steels

Mietz¹,

Isecke²

2002

Materials and Corrosion

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Prestressing steels can be exposed in prestressed concrete structures in construction stage (ungrouted duct) to environmental conditions causing formation and growth of hydrogen induced cracks with brittle fracture of the steel. The risk of this hydrogen induced stress corrosion cracking can be minimized by appropriate treatment, but there is a requirement for construction to approve only prestressing steel having no enhanced susceptibility to stress corrosion cracking. The paper describes the historical development of the different test methods proposed in the past and gives an overview on the general requirements for a suitable test method to assess the hydrogen‐induced stress corrosion susceptibility of prestressing steels. Since 1982, based on investigations on construction sites and transfer of the results into laboratory tests, a test method is available enabling realistic estimation of suitable application possibilities of prestressing steels. This so called DIBt‐test is approved to distinguish between prestressing steels susceptible to hydrogen induced stress corrosion cracking and those suitable and therefore approvable steels at practical environmental conditions. Furthermore the test enables estimation of corrosion risk for newly developed prestressing steels with higher strength.

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Section: Test Methods With Electrolyte Solution Representative Of Actumentioning

confidence: 99%

“…without Cr-alloying and manufactured until 1965) as well as comparable steels from the former GDR do not pass the test without fracture and are to be classified as ªnot approvableº according to today's standards. The investigations are described in detail in [32,35].…”

Section: Test Methods With Electrolyte Solution Representative Of Actumentioning

confidence: 99%

Assessment of test methods for evaluation stress corrosion cracking susceptibility of prestressing steels

Mietz¹,

Isecke²

2002

Materials and Corrosion

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show abstract

“…However, the possibility of other possible modes of failure (e.g. brittle fracture or SCC) cannot be ruled out, especially with the old type quenched and tempered wires [18].…”

Section: Modes Of Prestressing Failurementioning

confidence: 99%

Spatial time-dependent reliability analysis of corroding pretensioned prestressed concrete bridge girders

2007

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“…Results 23,64 showed that annealed prestressing steels of the`old type' (i.e. without Cr-alloying and manufactured prior to 1965) and also comparable steels from the former GDR do not pass the test and should be classified as`not approvable' according to today's standards.…”

Section: Historical Developmentmentioning

confidence: 99%

Degradation of prestressed concrete

Nürnberger

Sawade

2007

Durability of Concrete and Cement Composites

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Investigations on hydrogen-induced embrittlement of quenched and tempered prestressing steels

Cited by 15 publications

References 11 publications

Assessment of test methods for evaluation stress corrosion cracking susceptibility of prestressing steels

Assessment of test methods for evaluation stress corrosion cracking susceptibility of prestressing steels

Spatial time-dependent reliability analysis of corroding pretensioned prestressed concrete bridge girders

Degradation of prestressed concrete

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