scholarly journals Synchrotron XRD Analysis of Local Positions in Laminated Heavy Rust Layer Formed on Weathering Steel Bridge

2007 ◽  
Vol 71 (3) ◽  
pp. 346-353 ◽  
Author(s):  
Shuichi Hara ◽  
Masato Yamashita ◽  
Takayuki Kamimura ◽  
Masugu Sato
Keyword(s):  
Xrd Analysis ◽  
Weathering Steel ◽  
Steel Bridge ◽  
Rust Layer ◽  
Synchrotron Xrd

scholarly journals Analysis for Structure of Rust Layer Formed on Weathering Steel Bridge for Bare Use Exposed in Coastal Industrial Zone for 27 Years

2000 ◽  
Vol 49 (2) ◽  
pp. 67-71 ◽  
Author(s):  
Kazuhiko Shiotani ◽  
Wataru Tanimoto ◽  
Chizuko Maeda ◽  
Fumimaru Kawabata ◽  
Keniti Amano
Keyword(s):  
Weathering Steel ◽  
Steel Bridge ◽  
Industrial Zone ◽  
Rust Layer

Taxonomy for protective ability of rust layer using its composition formed on weathering steel bridge

2007 ◽  
Vol 49 (3) ◽  
pp. 1131-1142 ◽  
Author(s):  
Shuichi Hara ◽  
Takayuki Kamimura ◽  
Hideaki Miyuki ◽  
Masato Yamashita
Keyword(s):  
Weathering Steel ◽  
Steel Bridge ◽  
Rust Layer ◽  
Protective Ability

scholarly journals X-ray Diffraction Analysis of Rust Layer on a Weathering Steel Bridge with Surface Treatment Using Synchrotron Radiation

2007 ◽  
Vol 48 (3) ◽  
pp. 579-583 ◽  
Author(s):  
Masato Yamashita ◽  
Shuichi Hara ◽  
Takayuki Kamimura ◽  
Hideaki Miyuki ◽  
Masugu Sato
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
Surface Treatment ◽  
Weathering Steel ◽  
Steel Bridge ◽  
X Ray Diffraction ◽  
Rust Layer ◽  
X Ray

scholarly journals Corrosion Assessment of a Weathering Steel Bridge Structure after 30 Years of Service

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3788
Author(s):  
Agnieszka Królikowska ◽  
Leszek Komorowski ◽  
Izabela Kunce ◽  
Damian Wojda ◽  
Katarzyna Zacharuk ◽  
...  
Keyword(s):  
Phase Analysis ◽  
Diffraction Method ◽  
Visual Assessment ◽  
Product Layer ◽  
Carbon Steels ◽  
Bridge Engineering ◽  
Quantitative Phase Analysis ◽  
Weathering Steel ◽  
Steel Bridge ◽  
Structural Problems

The first steel with improved resistance towards atmospheric corrosion, the so-called weathering steel, was patented in the USA in 1933 and was initially used for coal railway cars, and after that, in building and bridge engineering. Weathering steels show higher corrosion resistance than carbon steels in many types of atmosphere due to their ability to form a compact, stable, adherent and protective patina during the time of exposure. Morphological evaluation of the appearance of the corrosion product layer, together with phase analysis of its components, can enable determination of the type of patina and the degree of protection of the steel. To support the visual assessment of a patina, a check based on the qualitative and quantitative phase analysis of its components may be carried out, and the PAI (Protective Ability Index) can be calculated. The estimation of the corrosion processes on original Polish-made weathering steel (12HNNbA) was carried out on a 30-year-old bridge in Poland. There are some structural problems within the deck derived not only from corrosion but also steel cracking, both inside and outside the boxes, at different heights. Fourteen representative samples of patina were analysed and their phase structures were determined by the X-ray powder diffraction method. The PAIs were determined and analysed.

Design Challenges of the Horotiu Paa Bridge - Maximising Structural Efficiency and Economy

2016 ◽  
Author(s):  
Liam Edwards
Keyword(s):  
New Zealand ◽  
Weathering Steel ◽  
Steel Bridge ◽  
Design Development ◽  
Economic Prosperity ◽  
Total Length ◽  
The Government ◽  
National Significance ◽  
Bridge Spans ◽  
Design Challenges

The Horotiu Paa Bridge, also known as the Karapiro Gully Bridge is the largest weathering steel bridge in New Zealand. Construction of the bridge was recently completed in November 2015. The bridge is part of the Cambridge section of the Waikato Expressway in New Zealand. The Waikato Expressway is one of the seven state highways, named the Roads of National Significance, identified by the government as essential to New Zealand's economic prosperity. The bridge spans over the Karapiro Gully with a total length of 200m, consisting of four 50m long equal spans and is 24m wide, servicing 4 lanes of traffic.<p> This paper discusses the design development, key design aspects, innovations and technical challenges for the design of the Horotiu Paa Bridge.

scholarly journals Investigation of Rust Layer Formed on Weathering Steel Coated with a Surface Treatment Promoting Protective Rust Formation

2007 ◽  
Vol 56 (11) ◽  
pp. 1035-1041 ◽  
Author(s):  
Takayuki KAMIMURA ◽  
Takashi DOI ◽  
Kazuyuki KASHIMA ◽  
Norio WAGURE ◽  
Shuichi HARA ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Weathering Steel ◽  
Rust Layer

scholarly journals Development of a Structural Integrity Non-destructive Inspection System for Bridges Made of Weathering Steel

2019 ◽  
Vol 278 ◽  
pp. 03006
Author(s):  
Björn Torsten Salmen ◽  
Marina Knyazeva ◽  
Frank Walther
Keyword(s):  
Structural Steel ◽  
Crack Detection ◽  
Structural Integrity ◽  
Test Methods ◽  
Point Of View ◽  
Inspection System ◽  
Weathering Steel ◽  
Steel Bridge ◽  
Electro Magnetic ◽  
Non Destructive

Due to the increasing volume of traffic, bridges are exposed to higher loads as it was considered during the planning phase. Therefore, a regular inspection is necessary in order to detect cracks at very early stages. The use of weathering structural steel in bridges, as well as in composite bridge constructions is an alternative to conventional bridges, not only from an economic but also from an ecological point of view, since it is not necessary to apply a corrosion protection layer and renew it during the lifetime of the bridge. Unfortunately, conventional visual inspection or magnetic particle inspection on the weathering steel bridge are hindered by the protective patina and requires development of new test methods. Within the framework of this project, a combined crack detection technique using non-destructive inspection by means of Active Thermography and by Electro-Magnetic Acoustic Transducer (EMAT) were evaluated in laboratory environments and in real conditions on bridge structures made of weathering structural steel.

In situ synchrotron XRD analysis of the kinetics of spodumene phase transitions

2018 ◽  
Vol 20 (16) ◽  
pp. 10753-10761 ◽  
Author(s):  
Radhika L. Moore ◽  
Jason P. Mann ◽  
Alejandro Montoya ◽  
Brian S. Haynes
Keyword(s):  
Phase Transitions ◽  
Kinetic Model ◽  
Xrd Analysis ◽  
Kinetics Of ◽  
Synchrotron Xrd

A kinetic model for the decomposition of α-spodumene and γ-spodumene is derived using in situ XRD to monitor the transitions.

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