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Galvanized steel is generally used in mechanically stabilized earth walls to reinforce the soil due to its high corrosion resistance compared to carbon steel and also its cost effectiveness compared to stainless steel. In this work, the stages of galvanized steel corrosion were modeled using the finite element analysis and a numerical study was conducted to determine the corrosion rate of galvanized steel in soil exposed to corrosive environments. [ABSTRACT FROM AUTHOR]

The article presents questions and answers related to corrosion, including one on whether flexing and yielding of metal in shell-and-tube heat exchanger head can cause accelerated internal corrosion, whether it is ideal to use dehumidification on bridges to extend the blast before priming, and another on whether galvanized steel can be used in offshore platforms/marine environments.

A special water treatment program is required for the corrosion protection of galvanized steel in cooling water systems. This article shows the effectiveness and advantage of vapor phase corrosion inhibitors in the protection of different metals, including galvanized steel. The product is biodegradable and has low aquatic toxicity. [ABSTRACT FROM AUTHOR]

Concern for smog, greenhouse gases, and other contaminants from gasoline engines has added to the development of alcohol/gasoline blends. Because alcohol is hygroscopic, coatings have been investigated to protect storage tanks homing these fuels. This article describes the evaluation of an alumina-rich epoxy coating for galvanealed steel tanks. [ABSTRACT FROM AUTHOR]

This article presents the results obtained from six years of atmospheric exposure of carbon steel, galvanized steel, copper, and anodized aluminum panels at 85 sites in Kuwait. The corrosion rates were plotted as a function of the indices of the sites in the form of area maps, using a geographical information system. The time-of-wetness sensors and chloride candles placed at several locations showed low to moderate values. The corrosion rates of carbon and galvanized steels were mostly low. The corrosion of these alloys appeared to be primarily controlled by the humidity and airborne salinity. With regard to copper, the corrosion rates were mostly high and were mainly affected by sulfur gases. The anodized aluminum did not corrode, but experienced sand erosion in a few places. The results were attributed to the desert nature of the country and its types of industrial activities. [ABSTRACT FROM AUTHOR]

Most galvanized structures exposed to marine environments worldwide show evident signs of deterioration, particularly in tropical climates. This happens shortly after erection, especially with those exposed to erosive environments because of the high wind speeds in those areas. This article discusses results that were obtained from the Iberoamerican network PATINA (Anticorrosive Protection for Materials Exposed to the Atmosphere) after 42 months' exposure, and from a new station set up at the Lake Maracaibo crossing after 36 months' exposure. These results showed that bare galvanized steel should not be used in these atmospheres, but should be coated with high-performance systems. [ABSTRACT FROM AUTHOR]

Despite recent literature that discourages the use of prestressed galvanized steel in concrete, a 40- year-old bridge with these characteristics has performed well. A detailed inspection was performed using electrochemical, mechanical, physical, and chemical techniques on-site and in the laboratory. Contrary to what was expected, the results indicated that some strands showed corrosion on some wires because of insufficient concrete cover; this exposed the strand to the atmosphere instead of causing stress corrosion or hydrogen embrittlement. [ABSTRACT FROM AUTHOR]

Presents case histories describing the use of hot-dip galvanized steel in various water and atmospheric applications. Interaction of zinc coating with oxygen, hydrogen and carbon dioxide; Length of corrosion prevention of a galvanized system in water; Effect of temperature on corrosion rate of zinc.

The article focuses on the new technology developed by Commonwealth Scientific and Industrial Research (CSIRO) of Australia which can provide non-toxic protective coating over galvanized steel. The alternative coat called Quench Coat is described as an inorganic water-based additive during the quench stage of the galvanizing process instead of the usual chromate used at present. Researchers claim that the new coating technology allows excellent paint adhesion and provides the same anti-corrosion protection against white rust.

The article presents several answers to a question related to galvanized handrails, including the advantage of utilizing sweep blasting even for new galvanizing, problem to be encountered when sweep blasting galvanized coating, and recommended abrasives for galvanized surface.

Flat, horizontal coupons of galvanized steel sheet exposed to outdoor atmospheres corrode faster on the top surfaces than on the bottom surfaces. The coating fails first on the top side, and the time to first rust is determined by the upper rate. Most corrosion rates reported in the literature are calculated from the total loss on both surfaces. The resulting corrosion rates are an average of top and bottom rates. Use of the average rate to calculate coating life leads to overestimates of 20 to 80%. Thus, estimates of galvanized coating life based on flat coupon corrosion rates should be reduced accordingly. [ABSTRACT FROM AUTHOR]

The article looks at the factors for proper assembly of impressed current anodes on coated piles of a jetty. Topics discussed include the potential of mounting design of current anodes on jetties, as tested on a study involving an Iranian jetty, the role of hypochlorus acid in causing internal corrosion on galvanized steel support tubes, and the results of the study showed important factors in designing anodes on a jetty like corrosion rate in the splash zone and the mounting method.

Answers a question on any options for corrosion control for galvanized steel potable water pipes in a 10-story apartment block suffering from random pinhole failures. Corrosion control approach if the structural integrity of the pipe is not compromised; Factors to consider in in-situ lining of the pipes.

Discusses the safety issues concerning the use of galvanized piping for drinking water. Risk of zinc ion contamination associated with galvanized piping; Correlation between the hydrogen-ion concentration in water and galvanize piping efficiency; Factors that influence corrosion in galvanized carbon steel.

Focuses on stainless steel galvanizing. Factors that need to be considered in austenitic stainless steel galvanization.

Answers question on the expected current density for the galvanized wire material used for cathodic protection. Advantages of zinc grounding system; Corrosion problem experience with zinc grounding system; Factors to consider before using galvanized steel wire earthing grid.

Discusses the correlation between hydrogen-ion concentration (pH) and zinc corrosion. Levels of pH in which zinc corrodes and oxidizes; Influence of galvanized steel on the effect of pH on zinc corrosion.

Explains the corrosion of galvanized steel sheet piles. External conditions that could influence the piles; Factor that influenced the corrosion of the piles.