DE10355750B3 - Demolition of weather protection and heat-insulating laminated wall for building involves making holes in wall panels near top edge and pouring in water to soak mineral fiber layer - Google Patents

Abstract

The multilayer wall covering (1) has a surface layer e.g. of tiles on its outer surface. An insulating layer is sandwiched between inner and outer concrete layers. It consists of a layer of mineral fibers which may form harmful dust if the wall panel is broken up in a dry state. Holes (6) are made in the inner concrete layer near the top edge of the panel (7) to allow water to be poured into the fibrous insulating layer to lay the dust while the wall panel is being opened up.

Description

The The invention relates to a method for the environmentally friendly dismantling of Prefabricated buildings, their outer wall elements consist of multi-layer panels, according to the preamble of the claim 1.

at the production of buildings in montage construction were in the past from armed or unweighted lightweight or heavy concrete bearing, preferably room wall-sized wall elements prefabricated, which with prefabricated ceiling elements to a spatial Structure joined together were.

Especially make the outer wall elements manufactured according to this technology themselves as multilayer plates having an inner layer, which consists of artificial mineral fibers to achieve the necessary thermal insulation.

in the Framework of dismantling of unused prefabricated buildings in housing and society is the use of environmentally friendly technologies necessary. In the conventionally practiced Demolition of buildings is one of the most important prerequisites that no contaminated dusts be released to the environment.

At the Demolition of the described outer wall elements according to the conventional Procedure by means of demolition bulb or other special fragmentation technique the plate is destroyed and the mineral fiber layer previously enclosed by concrete layers gets released. These fibers form a mixture with the concrete dust, that is released uncontrollably to the environment.

Around avoiding this burden on the environment and health, become the described prefabricated buildings in a particularly gentle way selectively dismantled. The connection structures of the structure are loosened and each one Ceiling and wall element covering the mineral fiber layer has, is removed largely undamaged. Each multilayer board is fed in this state a special treatment plant, the ensures an environmentally friendly material separation.

Such a procedure with a special treatment after disassembly of the plates is from the DE 42 34 474 A1 known. This document relates to a method for breaking large-scale slabs of prefabricated houses built in Plattenbauweise, in which a bent by means of a Knickstößels part of the plate by means of a folding device against a previously clamped plate member is pressed to approximately in area investment with this.

In order to is it possible to reduce the dimensions of the plate to a degree, leaving another Disposal, for example, the removal of the broken plate with a truck or crushing the broken plate in one Breaker, is relieved.

The For this Case applied method for dismantling of prefabricated buildings is complex and caused against the usual Demolition technology significantly higher Costs.

task The invention is a method for environmentally friendly dismantling of To provide prefabricated constructions in which the conventional demolition technology can be used, the release of the harmful Mineral fiber components of the multilayer board over the dust generated during the demolition to the environment is prevented.

The The object is achieved by the method according to the invention according to the features of claim 1 solved.

The Process is used for the environmentally friendly dismantling of gutted prefabricated buildings, the outer wall elements consist of multi-layer panels, the an inner concrete layer and an outer concrete layer formed between which is an insulating layer from contaminated mineral fibers is used.

there becomes the inner concrete layer and / or the outer concrete layer of the multilayer board in a preferably near the upper edge of the multilayer panel area with at least one breakthrough to the insulating layer Mistake.

By the breakthrough becomes a fluid one Binder in the insulation layer initiated by the liquid Binder the mineral fiber components of the insulation soaked and bound.

The Multilayer plate is by means of conventional abortion technology before Place smashed, wherein the bound mineral fiber constituents are not at the dust formation involved.

The bonded mineral fiber components are manually removed from the crash selected.

In the dependent claims are special designs the features of the invention shown.

The Invention is based on an embodiment explained in more detail. The associated drawings show in

1 a cross-section through a multi-layer plate, as used in the manufacture of prefabricated buildings used;

2 the view of an outer wall element, prepared for the introduction of water in the insulation layer.

Of the deconcentrated cored plate construction essentially exists from a spatial Structure comprising a plurality of interconnected interior wall elements, Outside wall elements and associated ceiling elements is formed.

The outer wall element consists of a multilayer plate 1 who have a in 1 has shown construction. The multi-layer plate 1 is made from an inner concrete layer 2 and an outer concrete layer 3 formed, which is an insulating layer 4 enclose. The insulating layer 4 consists of artificial mineral fibers 5 , which serve the thermal insulation of the outer wall element.

The mineral fibers 5 consist of an environmentally and health-endangering material whose admixture must be avoided in the form of fiber dust to concrete dust when demolishing the panel.

The avoidance of this admixture takes place by the introduction of water into the insulating layer 4 , For this purpose, in the inner concrete layer 2 breakthroughs 6 introduced, preferably by coring, through which access to the mineral fibers 5 filled space between the inner concrete layer 2 and the outer concrete layer 3 he follows.

Through these breakthroughs 6 Water is introduced until the mineral fibers filling the space 5 completely soaked in water. In the upright multi-layer panels 1 It is beneficial to the breakthroughs 6 in an area near the top edge 7 the multi-layer plate 1 bring in, since the gap thereby up to near the top 7 filled with water.

After the single multi-layer plate 1 Treated in this way, can the fragmentation of the multilayer plate 1 done with conventional aids. The moistened mineral fibers 5 do not participate in the formation of dust that occurs as a result of the demolition, but they remain largely in the state bound by the water, which is the manual environmentally friendly and reduced risk removal of mineral fibers 5 relieved from the concrete break.

For professionals, who are familiar with the described technology, it is without further possible, the features of the method according to the invention to vary without departing from the scope of the patent.

Thus, the demolition of the panel can be done plate by plate from top to bottom, after the multi-layer plates 1 were successively treated with the inventive method and smashed.

Of the Demolition can also affect the entire prefabricated building at the same time in which case all To undergo multi-layer panels of a treatment according to the invention are.

In In any case, the inclusion of mineral fibers in the demolition inevitable dust formation prevented.

Around the temporary binding of mineral fibers through the water can be avoided as Binding agent suitable liquids, z. As liquid adhesives be used, which is the composite of mineral fibers over a Any length of time and thus the manual removal This material from the concrete break also at a later date facilitate.

Claims (5)

Process for the environmentally sound dismantling of cored plate constructions, the outer wall elements of which consist of multilayer plates, which are formed from an inner concrete layer and an outer concrete layer, between which an insulating layer of contaminated mineral fibers is enclosed, characterized in that - the inner concrete layer ( 2 ) and / or the outer concrete layer ( 3 ) of the multilayer plate ( 1 ) with at least one breakthrough ( 6 ) to the insulating layer ( 4 ) - through the breakthrough ( 6 ) a liquid binder in the insulating layer ( 4 ) is initiated, wherein by the liquid binder, an adhesion of the mineral fibers ( 5 ) of the insulating layer ( 4 ), - the multilayer plate ( 1 ) is smashed on site by means of conventional demolition technique, the mineral fibers ( 5 ) are not involved in dust formation due to their internal adhesion, and - the bound mineral fibers ( 5 ) can be selected manually or mechanically from the abort. A method according to claim 1, characterized gekenn records that the introduction of liquid binder into the insulating layer ( 4 ) is depressurized. A method according to claim 1, characterized in that the introduction of liquid binder into the insulating layer ( 4 ) under pressure. Method according to Claims 1 to 3, characterized that as a liquid Binder water is used. Method according to claim 1 to 4, characterized in that the at least one breakthrough ( 6 ) in a near the upper edge of the multilayer board ( 1 ) is introduced.