Journal Name:
- International Journal of Science and Engineering Investigations
Abstract (2. Language):
Corrugated iron sheet is the most widely used material for making roof of the low cost houses. The main problem of these sheets is corrosion. In order to protect corrosion, corrugated iron sheets are galvanized. In the market, there are varieties of galvanized corrugated iron sheets with different coating thickness levels. The purpose of this study is to know the effect of zinc coating thickness on the corrosion behavior of galvanized corrugated iron sheets. For this regard, two types of galvanized iron sheets were collected from the local market. Thickness of the two sheets was measured by using coating thickness meter. Then corrosion test was done in three different environments i.e. fresh water, sea water and brine (3.5% NaCl solution) in a water/salt spray bath. After 35 hours exposure time, samples of each group were investigated and weight losses were measured. The samples were exposed in the corresponding environment for another two cycles (35 hours each). For each cycle, same investigation procedure was followed and weight losses were measured. Finally it was found that, with increasing the thickness of zinc coating, corrosion resistance of the galvanized corrugated iron sheet also increases. In this paper, the underlying corrosion mechanisms, response of the samples toward different environments and other details will be discussed.
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FULL TEXT (PDF):
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