Development and Prediction of Corrosion Processes on Weathering Steel Structures

2015 ◽  
Author(s):  
V. Urban ◽  
V. Krivy ◽  
K. Kreislova
Keyword(s):  
Steel Structures ◽  
Weathering Steel

Corrosive Environment Factors and their Influence on the Development of Weathering Steel Corrosion Products

2020 ◽  
Vol 832 ◽  
pp. 137-146
Author(s):  
Monika Kubzová ◽  
Vit Křivý ◽  
Viktor Urban ◽  
Katerina Kreislova
Keyword(s):  
Atmospheric Corrosion ◽  
Steel Surface ◽  
Protective Layer ◽  
Steel Structures ◽  
Corrosion Products ◽  
Outdoor Environment ◽  
Weathering Steel ◽  
Low Alloy Steels ◽  
Time Of Wetness ◽  
The Impact

This article deals with the topic of atmospheric corrosion. Atmospheric corrosion causes damage to nearly 80% of all existing steel structures. The main parameters of atmospheric corrosion are the time of wetness (TOW), air temperature and aggressive corrosive agents such as chlorides, sulfur dioxide and others. Currently, low alloy steels with improved atmospheric corrosion resistance called weathering steels are used for the steel structures located in outdoor environment. A protective layer of corrosion products is created on the steel surface and this layer can reduce continuation of corrosion of steel. The time of wetness together with the effect of aggressive corrosive agents are various for surfaces oriented vertically or horizontally. Experimental tests of atmospheric weathering steel were carried out to monitor the impact of location and position of surface on the different constructions. These tests allow monitoring the development of corrosion products in real exposures. The article presents a part of the research, which includes monitoring the development of the thickness of corrosion products with regard to the position on the structure. Research is developed to refine of prediction models with the aim of improving determination of corrosion losses during the service life of the structure. Second part of these experiments is dedicated to measuring the deposition rate of chlorides. Chlorides have a corrosive impact on the steel surface. Under normal conditions the chlorides does not create suitable environment for the development of a protective layer of corrosion products.

Experimental Investigation of Corrosion Processes on Weathering Steel Structures

2013 ◽  
Vol 577-578 ◽  
pp. 397-400 ◽  
Author(s):  
Vit Křivý ◽  
Viktor Urban ◽  
Lukáš Fabián
Keyword(s):  
Experimental Investigation ◽  
Czech Republic ◽  
Prediction Model ◽  
Experimental Testing ◽  
Steel Structures ◽  
Steel Bridges ◽  
Weathering Steel ◽  
Salt Solutions ◽  
The Czech Republic ◽  
Corrosion Rates

This paper introduces the experimental corrosion tests that are carried on the existing weathering steel structures in the Czech Republic. The influence of the position and location of the surface in the structure on the resulting corrosion rates can be evaluated using this experimental testing. Typical surfaces of steel bridges are tested, e.g. webs of main girders, upper and lower surfaces of flanges, surfaces affected by leaking salt solutions. Results of the corrosions tests are used for the specification of corrosion prediction model.

Protective ability index measurement through Raman quantification imaging to diagnose the conservation state of weathering steel structures

2014 ◽  
Vol 45 (11-12) ◽  
pp. 1076-1084 ◽  
Author(s):  
Julene Aramendia ◽  
Leticia Gomez-Nubla ◽  
Ludovic Bellot-Gurlet ◽  
Kepa Castro ◽  
Céline Paris ◽  
...  
Keyword(s):  
Steel Structures ◽  
Weathering Steel ◽  
Protective Ability ◽  
Index Measurement ◽  
Ability Index

(Invited) Measurement of Salt Abundance on Weathering Steel Structures By Portable XRF

2020 ◽  
Vol MA2020-02 (13) ◽  
pp. 1301-1301
Author(s):  
Masamichi Takebe ◽  
Makoto Ohya ◽  
Ayaka Matsumoto
Keyword(s):  
Steel Structures ◽  
Weathering Steel ◽  
Portable Xrf

Spatial Statistical Analyses for Time-Dependent Corroded Surfaces of Uncoated Weathering Steel Plates in Various Corrosive Environments

2011 ◽  
Vol 488-489 ◽  
pp. 57-60
Author(s):  
Shigenobu Kainuma ◽  
Young Soo Jeong
Keyword(s):  
Time Dependence ◽  
Steel Structures ◽  
Statistical Technique ◽  
Statistical Analyses ◽  
Steel Plates ◽  
Time Dependent ◽  
Weathering Steel ◽  
Okinawa Island ◽  
Uncoated Steel ◽  
Corrosive Environments

To ensure the safety of steel structures, it is important to evaluate the time-dependent corrosion behavior. The purpose of this research is to develop a method of predicting time-dependence of the corrosion surfaces of uncoated weathering steel plates in various corrosive environments. Atmospheric exposure tests were carried out on the uncoated steel plates for 0.5, 1, 2 and 4-years in Okinawa Island, Japan. Spatial statistical analyses were carried out on the corrosion surfaces of the tested specimens. In addition to this, the time-dependence of the corrosion surfaces were simulated by the spatial statistical technique.

Additions to Contingency Plan for Enhancing Secureness of Weathering Steel Structures

2019 ◽  
Vol 16 (43) ◽  
pp. 115-124 ◽  
Author(s):  
Hiroshi Kihira ◽  
Atsumi Imai ◽  
Mikijiro Hiramatsu ◽  
Takehide Aiga ◽  
Tsuyoshi Matsumoto ◽  
...  
Keyword(s):  
Steel Structures ◽  
Weathering Steel ◽  
Contingency Plan
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