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" width="560" height="315" style="border: none;" allowfullscreen> Concrete is a fundamental part of New York City's built environment. Sidewalks, curbs, stoops, steps, walkways, driveways, patios, building entrances, and other surfaces rely on concrete for strength and everyday functionality. Despite its durability, concrete does not remain unaffected by years of weather exposure, pedestrian traffic, moisture, temperature changes, tree roots, ground movement, and genera