| 摘要 |
PCT No. PCT/FR93/00548 Sec. 371 Date Dec. 9, 1994 Sec. 102(e) Date Dec. 9, 1994 PCT Filed Jun. 9, 1993 PCT Pub. No. WO93/25776 PCT Pub. Date Dec. 23, 1993A formwork constructed of prefabricated elements, preferably for building a concrete wall. The formwork has two parallel walls that define a space that is filled with concrete laden with water, sand and large aggregates. An inner wall of the formwork has a lattice or perforated structure to filter and pass water and small aggregates from the space that is filled with concrete. An outer wall also has a lattice or perforated structure to filter additional water and smaller aggregates from the space that is filled with concrete. This invention also includes a concrete heating wall that may be constructed from formwork. |
