COMPOSITE WOODEN BRICK OF WOODEN MATERIAL AND CONCRETE

PROBLEM TO BE SOLVED: To prevent a composite wooden brick from being floated by rainwater by forming a dovetail coupling projection on the back face of a rectangular solid wooden material, and placing and fixing concrete on the forming face of the dovetail coupling projection. SOLUTION: Joint gaps are provided between machined and processed wooden materials 1, and joint seals 3 are stuck to the joint gaps. The joint seals 3 are stuck to both sides of a wooden material 1A, it is pinched by the wooden materials 1, 1 located on both sides, and they are spread in a form with dovetail coupling projections 1a faced upward. Concrete 2 is placed on the dovetail coupling projections 1a of the wooden materials 1, 1, and the concrete 2 is trowel-finished to be flush with the upper edge face of the form. After the concrete 2 is dried in a curing period, the form is released to extract a product, thereby strength is improved, the warp or peeling of a wooden plate is prevented, floating by rainwater us prevented, and a stable, high-strength wooden brick can be laid.