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Zairyo-to-Kankyo
Vol. 61 (2012), No. 6

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

ONLINE ISSN:	1881-9664
PRINT ISSN:	0917-0480
Publisher:	Japan Society of Corrosion Engineering

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21 Nov. (Last 30 Days)

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Kimio Ito

pp. 235-

DOI:

10.3323/jcorr.61.235

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Article Title

Let's Learn from Biodiversity

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Ris

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Tomoki Doshida, Kenichi Takai, Mikiyuki Ichiba

pp. 249-256

DOI:

10.3323/jcorr.61.249

Abstract

A solution of ammonium thiocyanate is used in the FIP (Fédération International de la Précontrainte) test as a hydrogen charging method. Though this method is comparatively simple, fracture time in the FIP test and hydrogen content often differ among various testing institutes. However, the detailed hydrogen absorption behavior in the solution is still not clear. In this context, the effects of existing states of hydrogen, oxide film on the specimen surface, specific solution volume to specimen surface area, immersion time and solution temperature on the hydrogen absorption behavior of a steel bar for reinforcing prestressed concrete were investigated by immersing it in the solution. The amount of absorbed hydrogen increased with immersion time, reached its maximum, and then decreased with increasing immersion time. A main factor of the decrease in the amount of absorbed hydrogen was corrosion products, including Fe, O and S, formed on the specimen surface, since the amount of absorbed hydrogen increased again as a result of merely polishing the surface. This indicates that corrosion products formed on immersing specimens in a solution of ammonium thiocyanate strongly affect hydrogen absorption behavior. Whereas, variation of the solution, such as increase in pH, during immersion also affects slightly hydrogen absorption behavior.

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Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

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Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Keyword Ranking

reduction caco3 in electric furnace

kinetics of decarburization of liquid iron with high concentration ofcarbon

kinetics of decarburization of liquid iron by ar-coz gasmixture

ahss

charpy impact chemistry

dual phase steel

foamy slag in eaf

kinetics of decarburization of liquid iron by

ladle furnace flicker

scm440

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Share it with SNS

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Share it with SNS

Article Access Ranking

In-situ Observation of Precipitation and Growth of MnS Inclusions during Solidification of a High Sulfur Steel

Measurement of Bubble Size Distribution and Generation Position of Bubbles Generated during Smelting Reduction of Iron Oxide-containing Slag

Injection of hydrogenous gases into the blast furnace tuyeres for reducing CO₂ emissions: a review

Development of a Low-carbon Sintering Process Technology and Its Application to a Pilot-scale Sintering Testing

Precipitation Behavior of MnS from Molten Iron to Al₂O₃ during Solidification

Molecular dynamics simulation of viscosity of the CaO, MgO and Al₂O₃ melts

Effect of Al Content on Precipitation Behavior of AIN Inclusions during Unidirectional Solidification Process of Fe-(0.5-2.0)%Al-2.0%Mn Alloys

Quantitative Understanding of Solute Concentration Distribution by Microsegregation During Solidification

SOKD: A soft optimization knowledge distillation scheme for surface defects identification of hot-rolled strip

Reduction and Carburization Behaviors of Iron Oxide Composite with Iron Carbide and Free Carbon

Advanced Search

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Keyword Ranking

reduction caco3 in electric furnace

kinetics of decarburization of liquid iron with high concentration ofcarbon

kinetics of decarburization of liquid iron by ar-coz gasmixture

ahss

charpy impact chemistry

dual phase steel

foamy slag in eaf

kinetics of decarburization of liquid iron by

ladle furnace flicker

scm440

Zairyo-to-Kankyo Vol. 61 (2012), No. 6

Let's Learn from Biodiversity

Share it with SNS

Hydrogen Absorption Behavior of Steel Bar for Prestressed Concrete in a Solution of Ammonium Thiocyanate

Share it with SNS

Article Access Ranking

In-situ Observation of Precipitation and Growth of MnS Inclusions during Solidification of a High Sulfur Steel

Measurement of Bubble Size Distribution and Generation Position of Bubbles Generated during Smelting Reduction of Iron Oxide-containing Slag

Injection of hydrogenous gases into the blast furnace tuyeres for reducing CO2 emissions: a review

Development of a Low-carbon Sintering Process Technology and Its Application to a Pilot-scale Sintering Testing

Precipitation Behavior of MnS from Molten Iron to Al2O3 during Solidification

Molecular dynamics simulation of viscosity of the CaO, MgO and Al2O3 melts

Effect of Al Content on Precipitation Behavior of AIN Inclusions during Unidirectional Solidification Process of Fe-(0.5-2.0)%Al-2.0%Mn Alloys

Quantitative Understanding of Solute Concentration Distribution by Microsegregation During Solidification

SOKD: A soft optimization knowledge distillation scheme for surface defects identification of hot-rolled strip

Reduction and Carburization Behaviors of Iron Oxide Composite with Iron Carbide and Free Carbon

Advanced Search

Injection of hydrogenous gases into the blast furnace tuyeres for reducing CO₂ emissions: a review

Precipitation Behavior of MnS from Molten Iron to Al₂O₃ during Solidification

Molecular dynamics simulation of viscosity of the CaO, MgO and Al₂O₃ melts