DD283032A7 - ARRANGEMENT FOR NON-MECHANICAL DESTRUCTION OF CONCRETE / STEEL CONCRETE AND ROCK - Google Patents

Abstract

The invention is applicable in the construction industry, in particular for material recovery from concrete / reinforced concrete. It is essential to the invention that a compressive-stress wave generated by an incompressible medium with less effort, which is reflected in the boundary region between a compressible medium and the surface of the objects to be destroyed as a tensile wave wave, destroys the objects. FIG {concrete; Reinforced concrete; Rocks; Building construction; Materialrueckgewinnung; Concrete / rocks; Stole; non-mechanical destruction; Compression stress wave; tensile stress; lower energy consumption}

Description

For this 1 page drawing

Field of application of the invention

The invention is applicable in the construction industry for the non-mechanical destruction of concrete / reinforced concrete and rocks, in particular for the recovery of material from concrete / reinforced concrete.

Characteristic of the known state of the art

Mechanical crushing and rolling plants are known for crushing concrete structures and concrete construction elements.

The disadvantage of mechanical crushing and rolling plants is that such plants themselves are material-intensive and require a lot of energy to break the concrete and completely detach from the steel. Furthermore, a geometric limit is given for crushing and rolling plants, that is, depending on the opening width of the crusher, the part size is limited to relatively small-sized parts.

For wall elements pre-crushing is necessary, which is very expensive.

In further development of the known solutions, a completely surrounded by water concrete construction is destroyed by a compressive stress wave, so that the steel surrounded concrete breaks into chunks and the steel is exposed.

The compressive stress wave is triggered by electrodynamic pulses generated in the water.

The disadvantage of this method is that for generating the electrodynamic pulse or the pressure wave, a high electrical power is required, which is provided by a large gerätetechi / electrical and technical effort and produced and the chunks of crumbling concrete of very different sizes ,

Object of the invention

The aim of the invention is to crush concrete / reinforced concrete and rocks with less expenditure of energy and t aterial and exposed by concrete steel.

Explanation of the essence of the invention

The invention has for its object to destroy by a generated propagation mechanism of a compressive stress wave concrete / reinforced concrete and rocks controllable and exposed by concrete steel.

According to the invention, an arrangement for the destruction of concrete / reinforced concrete and rocks with an existing in an incompressible medium Druckspannungswellen source is characterized in that to be destroyed concrete / reinforced concrete or the rock to be destroyed between the incompressible medium and a compressible medium in the range of Druck7Zugspannungswelle between the compressive stress source and the boundary region of the surface of the concrete / reinforced concrete or the rock and the compressible medium is arranged.

The concrete / reinforced concrete to be destroyed or the rock (objects) to be destroyed are held and fixed by a holder, preferably by a supporting frame, by means of chains or wire between the two media.

The spatial arrangement of more than one source for generating one or more pressure waves in the incompressible medium (liquid), these are triggered successively or simultaneously to destroy the objects. This makes it possible that the compressive stress wave or waves are optimally selectively controlled with respect to their duration and strength according to the dimensions of the objects to be smashed and their sound properties.

The arrangement of the objects to be destroyed between incompressible and compressible medium in the boundary region between the compressible medium and the object to be destroyed which reflects the object to be destroyed continuous compressive stress wave and runs back as a tensile wave. Part of the pressure wave impinging on the object to be destroyed is already reflected and refracted in the object. The compressive stress wave coming from the incompressible medium from the compressive stress wave source passes through the object adjacent to a compressible medium to be destroyed and is reflected from the boundary between the compressible mode and the surface of the object to be destroyed as a tensile wave returning and destroying the object. As a result of the destructive pressure / tension wave, the concrete / reinforced concrete or the rocks disintegrate in a controllable manner into determinable maximum concrete chunks or rocks. After the destruction of concrete / reinforced concrete, the steel surrounded by concrete is exposed. The identifiable concrete or rock fragments and the exposed steel are then available for recyling processes or for further use. The use of a source of compressive wave generating source or pressure wave generating sources, disintegrants (eg explosives), the device technology and energy cost to generate the compressive wave energy is significantly reduced.

In the incompressible medium, the compressive stress wave passes through the very good transmission properties of the incompressible medium at the speed of sound against the object to be destroyed. Furthermore, the dust produced during the destruction is bound by the incompressible medium and the effective space is limited. Through the use of sources that z. B. explosives to trigger one or more pressure waves, the device technical and energy costs for generating and providing the energy for one or more pressure waves is substantially reduced.

embodiment

The invention will be explained in more detail with reference to an embodiment.

It shows the figure: a cross section of a destruction plant for concrete / reinforced concrete elements.

A container 4 is in the ground. He is filled with water 3.

To be destroyed concrete / reinforced concrete elements 1 are on a support frame 5 by chains, wire, ropes 6 o.a. suspended so that they dip into the incompressible medium water and a boundary surface between the compressible medium Ljft 9 and a surface of the concrete / reinforced concrete element 1 is located.

Below the concrete / reinforced concrete elements 1 is the source 2 for the compressive stress wave. Source 2 is an explosive.

The sieve bottom 7 has the task of retaining coarse-grained fragments and reinforcing steel.

The enclosure 8 has a protective function and allows the outgoing water (fountain) run back. After introducing the concrete / reinforced concrete elements, the source 2 can be ignited. By appropriate energy densities, adapted to the size of the concrete / reinforced concrete elements 1, arises or arise a compressive stress wave / several successive compressive stress waves. These impinge on the BetonVStahlbetonelemente 1 and are partially reflected and broken.

In the concrete / reinforced concrete element 1, the compressive stress wave travels to the reflection at the boundary between the compressible medium air 9 and the concrete Z-steel concrete elements 1 and from there back as a tensile wave.

Due to the compressive stress wave and the tensile wave, the concrete / reinforced concrete elements with less energy consumption in determinable maximum concrete chunks ierstört, so that the steel surrounded by concrete is exposed.

Claims (4)

1. An arrangement for the destruction of concrete / reinforced concrete and rocks with an existing in an incompressible medium pressure wave source, characterized in that the concrete to be destroyed / reinforced concrete (1) or the destroyer de rock between the incompressible medium (3) and a compressible medium (9) is arranged in Beteich a compressive / tensile stress wave between the compressive stress source and the boundary region of the surface of the concrete / reinforced concrete (1) or the rock and the compressible medium (9). 2. Arrangement according to claim 1, characterized in that more than one compressive stress wave source (2) in the incompressible medium (3) is arranged. 3. Arrangement according to claim 1 and 2, characterized in that the compressive stress wave sources (2) are arranged spatially in the incompressible medium (3). 4. Arrangement according to claim 1,2 and 3, gekennzeichne, characterized in that the compressive stress wave source (2) and the compressive stress wave sources (2) «.'in ignitable disintegrant or are ignitable disintegrants.