| 摘要 |
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, comprising 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 pneumatic tire tread portions 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; I) 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. |
