Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1997-11-24
2000-07-04
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
52 791, 156290, 428223, B28B 718, B28B 1900, E04B 202
Patent
active
060833343
DESCRIPTION:
BRIEF SUMMARY
Large-scale panels have been introduced, for rational building. Usually such panels are made from reinforced concrete in a concrete works and then transported to the site. It is also already know to produce double-shell panels, the intermediate space of which is filled with a heat-insulating material, for example a foam. In that case however problems occur due to corrosion at the connecting bars between the two shells if in winter the temperature falls below the dew point in that region and moisture has an on-going effect. In addition assembly of the known large-scale panels requires a considerable amount of expenditure at the connecting locations between the panels, in particular in the region of corners of buildings and when connecting internal walls.
The object of the present invention is to provide a process with which heat-insulated panels can be produced rationally and with a high degree of accuracy. At the same time the invention seeks to provide that the large-scale panels produced thereby are easy to fit, already include all subsequent openings for doors, windows and the like and as far as possible facilitate the later installation of pipes, conduits and the like. The invention further seeks to provide that a very good heat barrier effect is achieved without heat bridges and without the risks of corrosion.
That object is attained by the process steps recited in claim 1.
The panels which are produced with the process and which can be used for load-bearing and non-load-bearing walls and supporting walls have a good heat barrier effect by virtue of the hard foam panel which is arranged on the subsequent outside of the panels and which can be of great thickness. A secure and also loadable durable connection is achieved between the hard foam panel and the concrete layer cast thereon, by means of the connecting members which are fixed with bonding agent, for example in the form of known connectors in accordance with EP-B-0 299 353 and additionally or also alone in the farm of grooves of an undercut configuration in the hard foam panel. The concrete layer may comprise normal concrete or also a lightweight concrete with air pores or also a fiber-reinforced concrete. A smooth surface with an accurate thickness dimension is obtained by stripping oft or dressing the concrete layer.
Developments of the invention are the subject-matter of the appendant claims. If a high degree of strength of the panels is required, steel reinforcing means of known kind can be applied at a spacing to the hard foam panel, prior to the application of the concrete layer. For that purpose mats or nets can also be used, which are provided with cut-outs for the means for keeping spaces for the production of door, window and other openings. In addition, before the application of the concrete layer, empty tubes and/or installation tubes and/or conduits and/or other installations, for example for solar apparatuses, can be put on to the hard foam plate at a desired spacing.
Advantageously, prior to the application of the concrete layer, perpendicularly and/or horizontally and/or diagonally extending steel bars or tubes may also be applied at a spacing to the hard foam panel, which then after application of the concrete layer before complete hardening thereof are pulled to produce hollow chambers for subsequently inserting reinforcing or sheathing means. Desirably the steel bars or tubes are provided on the outside with a TEFLON.RTM. (Polytetraflouroethylene) layer so that they can be easily pulled. Then, on site, reinforcing bars are introduced into the hollow chambers and cast therein with concrete. Besides reinforcing the panels the reinforcing bars may also serve to connect the panels and also to anchor the lowermost panel in a foundation.
A cladding or facing on the outward side of the panels can be produced in a particularly rational fashion by a procedure whereby, prior to the application of the hard foam panel, a material layer is applied to the table surface, which forms the subsequent external cladding or facing of the panel. A
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Ball Michael W.
Ipa-Isorast International S.A.
Rossi Jessica
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