Method and apparatus for making substantially parallelepiped formwork modules for constructing buildings, restraining walls, embankments, dykes, anti-erosion and anti-seismic foundations starting from out-of-use tires, and related formwork module

A method for making substantially parallelepiped square cross-section formwork modules for building constructions, cut-off walls, embankments, dams, anti-erosion and anti-seismic foundations and/or the like, starting from used pneumatic tires, characterized in that said method comprises at least the steps of:

• a) providing a used pneumatic tire deriving both from a periodic replacement of worn tires or from the rubber industry wastes or from the recovering of used pneumatic tires;
• b) removing from said pneumatic tire the two wall iron beads;
• c) performing cuts at diametrically opposite positions on the edges, said cuts defining cut-out regions separated by a middle solid region of the tire wall;
• d) removably mounting said pneumatic tire on basket-drum supporting means;
• e) pressing in diametrical directions towards a center of said pneumatic tire the tread portions of said pneumatic tire near said cuts thereby causing said tire to assume a substantially parallelepiped configuration, preferably of a square cross-section;
• f) pressing the corner regions of said substantially square configuration toward the center of said pneumatic tire and simultaneously continuing said pressing step thereby defining, at said cuts, hollow ribs of a substantially U-shape substantially extending through the overall width of said pneumatic tire, from a wall to the other wall of said pneumatic tire;
• g) providing a plurality of locking elements for locking the arms of each said rib and related connecting means;
• h) providing a corresponding plurality of substantially laminar flat upright elements;
• i) locking the arms of the U hollow rib of each said rib and simultaneously locking to each outer wall of each arm of said U of the two walls of each said rib a respective pair of said upright elements;
• l) introducing the pneumatic tire having assumed said substantially parallelepiped configuration, and supported by said supporting means, into a heating and/or cooking oven;
• m) withdrawing the pneumatic tire from said oven and cooling it to definitively fix said substantially parallelepiped configuration.