Patent ID: 8806839

Claim:
A combined concrete material comprising: a) a concrete, the concrete comprising an outer surface; b) a reinforcing bar, the reinforcing bar disposed inside the concrete; and c) a decorative sheet, the decorative sheet comprising a flat part comprising an inner surface, a first junction, and a second junction; wherein: the concrete, the reinforcing bar, and the decorative sheet are fixed together as one whole body; the decorative sheet is disposed outside the concrete, and the inner surface of the flat part is attached to the outer surface of the concrete; the first junction and the second junction are disposed on two ends of the flat part; the inner surface of the flat part is concaved to form a dovetail slot; neighboring decorative sheets are connected together via the first junction and the second junction; the first junction and the second junction are embedded in the concrete; the first junction comprises a first extended wall and a first parallel wall; the first extended wall is formed by extending and inclining one end of the flat part backward; the first parallel wall is in parallel with the flat part and is formed by extending and inclining one end of the first extended wall backward; the second junction comprises a second extended wall and a second parallel wall; the second extended wall is formed by extending and inclining the other end of the flat part backward; the second parallel wall is in parallel with the flat part and is formed by extending and inclining one end of the second extended wall backward; a vertical distance between the first parallel wall and the flat part is smaller than a vertical distance between the second parallel wall and the flat part; a gap is arranged between two neighboring flat parts of two neighboring decorative sheets; and a filler is filled between the first extended wall and the second extended wall of the two neighboring decorative sheets.