The structural steel had the following specifications:
|Structure||Steel I-beams of various sizes|
|Surface Preparation||Sa 2.5|
|Design Temperature||65 °C|
|Application Temperature||35 °C|
|Design Life||5 years|
|Repair Length||Approx 50m|
|Weight of Repair||Approx 300kg|
|Corrosion Type||Through wall and surface|
|Defect Details||- Complete loss of cross section to top and bottom flanges and webat localised areas
- General loss of cross section throughout
- Corrosion of connection plates and bolts
- Coating deterioration
Critical structural steel I-beams at a mine site had suffered significant loss of cross section, reducing their structural capacity. The composite repair was required to restore the beams to their original capacity and prevent future corrosion of the steel substrate.
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