The use of plain steel tying wires in proximity to Class F4 and F5 concrete finishes can lead to rust staining, compromising the visual appeal of exposed surfaces. These wires, similar to standard steel reinforcement, are susceptible to corrosion over time. However, due to their small diameter, they corrode rapidly, leading to extensive rusting that can stain the formwork and significantly mar the finished concrete surface.
To mitigate this issue, stainless steel tying wires are often specified for areas requiring high-quality finishes. Unlike plain steel, stainless steel is highly resistant to corrosion, preventing the formation of rust and subsequent staining. This ensures that the aesthetic integrity of the finished concrete surface is maintained, even in exposed locations.
It’s important to note that tying wires are essential for securing and connecting steel reinforcement bars. While their primary function is structural, their impact on the final appearance cannot be ignored, especially in architectural concrete applications where aesthetics are paramount. By choosing stainless steel tying wires for critical areas, construction professionals can safeguard the visual quality of their projects and avoid costly rework due to rust staining.