Formwork for building a concrete wall
OwnerPhilippe Durand, Fran.cedilla.oise Dauroninventors
Life of this patent
Estimating the term…
Abstract
A 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.
Claims20
In a sacrificial formwork for building a concrete wall, the formwork having a first outer wall (1) and a second outer wall (2), the improvement comprising:
- the first outer wall (1) positioned generally parallel to and at a distance from the second outer wall (2), the second outer wall (2) having a plurality of first openings (9), at least one inner filtering wall (5) positioned generally parallel to and between the first outer wall (1) and the second outer wall (2) and forming a first space (3) between the first outer wall (1) and the at least one inner filtering wall (5) and a second space (8) between the second outer wall (2) and the at least one inner filtering wall (5), the at least one inner filtering wall (5) having a plurality of second openings (6), a first diameter of each of the first openings (9) being less than a second diameter of each of the second openings (6), such that when fluidic concrete is poured within the first space (3) aggregates of the fluidic concrete of a size smaller than the second diameter are allowed to pass from the first space (3) through the second openings (6) to the second space (8).
In a method for building a concrete wall with a sacrificial formwork, wherein the sacrificial formwork has a first outer wall (1) and a second outer wall (2), the improvement comprising:
- positioning the first outer wall (1) generally parallel to and at a distance from the second outer wall (2) which has a plurality of first openings (9) each with a first diameter;
- positioning at least one inner filtering wall (5) which has a plurality of second openings (6), each with a second diameter greater than the first diameter, generally parallel to and between the first outer wall (1) and the second outer wall (2) and forming a first space (3) between the first outer wall (1) and the at least one inner filtering wall (5) and a second space (8) between the second outer wall (2) and the at least one inner filtering wall (5);
- and
- pouring fluidic concrete into the first space (3), wherein concrete aggregates of a size smaller than the second diameter pass from the first space (3) through the second openings (6) to the second space (8).
Dependencies are inferred from the claim text.