After checking the damaged guardrail panel, it is necessary to inspect whether there is any damage near the beams and columns. Sometimes visual inspection can be used, but professional tools are needed to ensure that the guardrail panel can effectively maintain the surrounding environment. When replacing damaged guardrail panels, it must be ensured that they are fully assembled to achieve protective effects and ensure durability. If the column is damaged, it needs to be replaced and thoroughly compacted after laying to ensure a smooth road surface.
On highways, corrugated guardrail panels often experience scratching. If the guardrail panel is only scratched on the surface and not deformed, it does not need to be replaced, only corrosion protection treatment is required. Because scratching does not affect the protective effect of the guardrail panel. The method to deal with scratched guardrail panels is to repair the corrosion protection layer. The simplest and most direct method is to apply silver powder, but its resistance to acid rain corrosion is relatively short, about 3-5 years. Another more complex repair method is hot-dip galvanizing treatment, which is more cumbersome. If this method is not chosen, you can also consider directly purchasing new guardrail panels to replace the scratched ones.