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A concrete problem rarely stays small for long. A hairline crack lets in water, winter finds the weak point, the steel inside starts to rust, and before long a simple patch turns into a larger structural concrete restoration project. Facility owners usually see the evidence first at ground level, a spall near a loading dock, rust staining under a balcony edge, a rough patch on a parking structure deck, or a slab that sounds hollow when tapped. The challenge is not only deci