DE2004101C - Process for the production of a self-supporting composite building panel - Google Patents

Description

The invention relates to a method for producing a self-supporting composite building board for raised floors, ceilings, roofs or the like, in which in one of a '.' m material with high tensile strength and high modulus of elasticity, e.g. B. sheet steel formed Cavity a flowable or pourable and hardenable material with low tensile strength and low Young's modulus, e.g. B. concrete, is introduced, the material with high tensile strength and high Modulus of elasticity serves as reinforcement of the plate.

It is known (German Offenlegungsschrift 1559 479) that composite building panels, e.g. as wall elements serve for prefabricated houses by making two steel sheets at their edges crimped, welded together at the joints of the edges and in the hollow body formed in this way or cavity introduces a foamable plastic and foams. It is also common to the steel sheets with anchoring tabs for the punched out and bent into the cavity Plastic. However, in order to obtain exact outer dimensions of the plate, one must not only have the Carry out welding of the steel sheets very carefully, but also rework the finished weld seam, which in turn weakens their strength. The welding work required here also adversely affects the economy of this type of plate production. There is also the risk of that disadvantageous air inclusions occur when foaming the hollow body. In addition, as a filler material only foamable plastic must be used here, since the practically closed Hollow body a compression of the filling material, for. B.

by pressing, excludes. ^p ÜR a rational, low-cost mass production hence this composite plate is not suitable.

It is also generally known to have molded bodies made of concrete with internal reinforcement made of steel rods or steel mats, for example also in Form flat building panels, which are mainly subjected to bending, and through Vibrating or pressing the concrete before it hardens and finally to accelerate it add heat to curing. In order to obtain good strength properties, it is necessary to that the steel reinforcement is embedded as evenly as possible in the cross-section of the building board. However, this causes considerable difficulties, especially in the case of large building boards with a relatively small thickness. as the steel reinforcement can easily shift during the concrete's compaction and out of this Basically, the use of special brackets makes it necessary, their arrangement additional labor claimed. In addition, if the steel reinforcement is embedded in the concrete, the one on the tension side Lying concrete cross-section statically not used, and due to the embedded reinforcement such building boards are relatively thick and therefore correspondingly heavy, so that they are unsuitable for many purposes or are at least uneconomical. Conventionally reinforced concrete building panels can also not be used alone at their corners, as the reinforcement does not usually extend into the corners and thus the Support forces cannot be introduced directly into the reinforcement either. Another disadvantage of the known Process for the production of concrete building panels consists in the fact that the hereby achievable Dimensional accuracy in the finished products is not sufficient for many purposes. With spatial trusses and raised floors for electronic computers, control rooms and similar cases should use the building boards as roof or floor elements

It must be possible that they have too much or too little fluid or pourable material with a very low weight

probably bending forces as well as tensile and compressive forces is created in the material without the

the plate plane itself, so that the manufacturing process is practically extended. There

Required bonding effect between the building panels, furthermore, the external and tension-side arranged

and the bar elements of the spatial framework 5 nete reinforcement of the composite building panel forming

or the substructure of raised floors. Material with high tensile strength and high elasticity

aim. This composite effect, however, requires a large modulus of elasticity than is preformed as an open top tub,

Dimensional accuracy of the building panels, as it is with metal, there is advantageously the possibility of simple

components is common, in advance (e.g. in the order of magnitude the exact dimensional accuracy or external dimensions

tolerance of ± 0.2 mm). io of the finished composite building board by accordingly

To ensure the precise preforming of the tub produced in the manner indicated above, see above

ton building panels for building construction or under Ver that such composite panels advantageous, z. B. with

So-called sand-typed construction elements made of metal made of concrete are used for production

wich elements are easily damaged during transport - composite structures can be combined-

bar, as the edges of the building boards break off easily. Another advantage is that the flowing

and the building boards are compacted in the tub, even with strong impacts that are not stable or pourable

keep. so that after it has hardened, not only the

The invention is based on the object of providing a required composite effect between the two economical, simple and thus economical materials achieved, but also disadvantageous air in-process for the production of composite panels 20 conclusions can be reliably avoided. The after indicate the composite structural panels produced with a very high method according to the invention composite dimensional accuracy and dimensional accuracy guaranteed building panels therefore have high strength values and eliminates the need for post-processing steps, with relatively small thickness and low difficulty with conventional embedding like weight.

of reinforcement avoids as well as building panels 25 The flowable or pourable material can depending

leads, the high strength properties with low according to the intended use of the composite building board

Have thickness and are free v: 1 air pockets. e.g. from concrete, from minerals with cement binding

According to the invention, this task is in manure (including aerated concrete), plaster of paris or plaster-bound a method of the type mentioned at the outset by means of minerals, synthetic resin compounds, organic fibers solved that the material with high tensile strength 30 substances with synthetic resin binders, synthetic resin compounds speed and high modulus of elasticity than open at the top with embedded fillers, such as. B. Expanded concrete, Tub is preformed that then the flowing or perlite, wood concrete made of wood fibers and cement, or pourable material in one or more of the asbestos cement or the like. Also the to sogemen the hollow space of the tub corresponding to the called artificial stones processable fabric conformation introduced and at least pre-compressed 35 tior.en can be used for this. The tub is, and that then the pourable fluid material can be made of steel, galvanized sheet steel or sheet steel fabric during or after compaction or before with a rust protection layer on both sides and / or artificial compaction brought to the desired volume, silicone coating on the visible side, light metal alloy is. stanchions, compression-molded plastics with large tension

It is already a composite panel for installation strength, such as fiberglass-reinforced synthetic resin, etc.,

floor has been proposed (German disclosure to be produced.

document 1 609 738), which has an external sheet metal reinforcement arranged on the tensile GeT. has introduced gene into which, optionally with intermediate 45, and after compaction, a wooden chipboard guide of the desired volume can be pressed in excess in order to connect an adhesive. The material can be wiped off or squeezed off at the upturned edges. Sheet metal reinforcement is a plastic frame angegos- By the last-mentioned process step is sen, whereas at the bottom of the sheet me ^'iV> ewehrung an additional compression of the material and a hump-like elevations provided which achieves the 50 Giättung of its surface.
Achieving the same panel heights accordingly. The flowable or pourable material can also be milled or sanded. in a small overdose in the tub.

Because in the method according to the invention, and the desired volume can be achieved The preformed tubs are continuously molded before being pressed out over them during compaction Press with the flowable or pourable material through openings in the fabric, e.g. B. concrete, filled and then intermittently de: tub. The OfT press is advantageous for this can be supplied, in which the flow or openings on anchoring un-pourable anchors pressed into the tub Material not only compacted or used in advance. In a procedure in which compacted, but the composite building board also precompacts the flowable or pourable material The flowable or pourable material can also be machined to the exact size and height at the same time . is processed, a rational, economical series is introduced into the tub with a slight underdosage Production enables any post-processing, and the desired volume and subsequent steps makes redundant. Advantageously, compression can be achieved by forming cavities while the amount of the men in the cavity in the material can be achieved. This will Well-placed / pourable or pourable material 65 advantageously flowable or pourable material does not exactly save with the theoretically required.

Filling quantity match, since during or after

After compressing or pre-compressing a compensation for gene pressed into the tub and by continuing

of the spinning tools the redensification is advantageous and also leads to an additional compaction will. This has the advantage that the pressure lent compaction and smoothing of the concrete surface tools enables two functions to be carried out immediately one after the other. After the compaction and hardening of the which meet by first anchoring openings Concrete forms a bond with the tub 1, gene into the tub and then into the 5 and the latter becomes the outer reinforcement, the Run in the material filling the tub, around which the, ^ desired high dimensional accuracy of the finished verses to compress. bund building board guaranteed. The one in the openings 2

In a process management in which the flowing or penetrated concrete forms conical anchoring

loose material is pre-compacted, the body, which advantageously supports the composite effect, can

Flowable or pourable material slightly under- io zen.

be introduced into the tub in a metered manner, and in the exemplary embodiment according to FIGS. 3 and 4 End of the pre-compression of the flowable or pourable, the preformed tub 1 is entWerkstoffes in a mold 7 a leveling layer with a lower speaking cross-section can be inserted, and this is Thickness from a heat inflatable the concrete back in a small overdose and curable synthetic resin or the like. Filled into the flow or 15 the tub 1. By lowering the pourable Material are bound. This stempeis 8, the concrete 3 is compacted, with the same leveling layer Another option is the early on during the compaction of excess concrete Specify the composite panel height exactly. through the openings 2 and through

The invention is then pressed out using the openings 9 in the bottom of the press mold 7 rerer embodiment shown in the drawing is ao. Gain the exact desired volume of concrete explained in more detail. It is enough to show it here with its compression so that the

Fig. 1 and 2 each a partial sectional view, the two original filling amount is not critical.

different stages of an exemplary embodiment. The concrete can also be slightly underdosed

of the procedure, fill in the warning 1 and the desired volume

I · i g. 3 and 4 each a partial sectional view, the two as men of the concrete by the formation of Hohlräu-Stufcn Another embodiment of the method men (not shown) achieve in concrete. Such hollow points spaces can be z. B. produce that one

F i g. 5 and 6 each have a partial sectional view, which after lowering the press pin 8 into the in

rere stages of a further exemplary embodiment of FIG. 4 position shown, not shown stamp by the

Method show 30 introduces openings 9 and 2 in the concrete.

7 and 8 each have a partial sectional view, the two in the embodiment according to FIGS Process stages similar to FIGS. 3 and 4, the preformed tub 100 is shown without openings 2 Illustrative, but inserted in connection with a modified in a mold 10, and the concrete is changed Bath, then filled in with a slightly underdosed amount. Loading

F i g. 9 a longitudinal section of a 35 note that the anchorages (not

the composite building board produced for a double display) for the load-bearing substructure (not

bottom, shows) already when deforming the tub with

Fig. 10 and 10a each form a partial sectional view of one. Then the ram 11 is in the

composite building board produced by the method in FIG. 6 lowered, with the concrete

as a ceiling panel for a space framework. 40 is compressed. With the help of

The method for producing the composite component of the compression mold 10 guided spinning tools

plates can be made of different materials - 12 the openings 2 in the bottom of the tub 1 -

to lead. For the sake of simplicity, however, it is next pressed, and the pressing tools 12 are then

starting only from concrete as a material with low tension through these openings 2 for re-compaction of the

strength and low modulus of elasticity and of 45 tons introduced into them and after compaction

Sheet steel as a material with high tensile strength and withdrawn. The cavities 12C are in the

high modulus of elasticity spoken. Concrete trained.

The open top, flat tub 1 is preformed from a thin-walled sheet steel in the embodiment according to FIGS. B. formge- a preformed tub 1 α is used, which presses with, at the same time anchors for the loading 50 a peripheral flange 13 and inwardly pressed clay in the form of openings 2 with inwardly drawn anchoring tabs 14 is provided for the concrete. indented edges. In the same Ar- The tub 1 α is here in a corresponding Auseitsgang also in the F i g. 1 and 2 insert mold 15, not formed, and the concrete is molded into the anchoring shown in the tub, which is filled in slightly overdosed. The compression of the concrete used for fastening the composite building board to 55 takes place by lowering the ram 16 in a supporting substructure, not shown, as shown in FIG. 8 position shown, namely with interim, circuit a cover plate 17. Excess concrete

In the tub 1 is shown in FIG. 1 as tlicß- or is here when compressing by the when pressing

pourable material 3 concrete in a small opening of the anchoring tabs 14

Filled overdosage. The tub 1 is then 60 18 and through openings 19 aligned with these

brought to a vibrating table 4 on which the compression is pressed out in the bottom of the mold 15, as shown in FIG. 8

processing of the concrete takes place. Excess material 3 'shows. The cover plate 17 can be used to complete the

is according to Figure 2 by means of a stripper 5 composite building board on any conventional

removed to a smooth and additionally compacted concrete way with the peripheral flange 13 of the tub 1 α

surface6 to get. Tied in place of the one shown in FIG. This cover plate can depending on the Shown scrapers can also be used as a roll-shaped material, either only Wipers (not shown) can be used to beautify the concrete surface or a

to form especially in the production of elongated composite leveling layer or additional static

7 8

To take over functions. For example, there is 23 cingcformt to accommodate the fitting pin 22 of the

The cover plate is made from a flat steel plate, so will create footrests. Anchoring flaps 14 un-

dic composite building board closed on all sides. This supports the bond between the tub

The cover plate can also be used in addition to the horizontal 101 and the concrete.

zontal forces in the plane of the plate or parallel to the S Figs. 10 and 10 A show another application

Transfer plate. training example of a z. B. according to the method according to

The composite panel produced during compression molding of the tub la at the same time as FIGS. I and 2

trained anchors for a load-bearing un- cover plate of a space framework, consisting of

The construction is shown in FIGS. 7 and 8 not shown node pieces 24 and rods 25. This composite construction

Instead of the above process steps for the educational plate again contains a trough 102 with anchoring screws 26 pressed in when preparing the desired volume of the concrete and the form, for also for the precise measurement of the height of the finished concrete and a peripheral flange 13 'in In the case of underdosed concrete, a leveling layer less than 15 or pins 28 can be worked out during the precompacting of the concrete at anchoring openings 27 for fastening screws. After being bound to the thickness, which, when exposed to heat, FIG. 10A, the composite building board additionally expands and hardens. Here, accordingly, the one cover plate 17, analogous to FIG. The screw flange or the upper peripheral edge of the tub ao ben 28 are aligned during the assembly of the Verbundbauplatvorzugsweisc. th in support plates 30 at the node pieces 24

The F i g. 9 shows an application example of the screwed in after. In this embodiment of the composite construction panel produced by the method according to the invention, it is not necessary for the composite construction panels as a base element for a double outer edge of the peripheral flange 13 'to be precisely semifinished. The composite building panels must for this purpose, as the composite effect between the panels have precise outer dimensions with a tolerance and the supporting substructure by exactly ± 0.2 mm, which is achieved by the fixed screw 28.
Formpicssen of the tub 101 exactly vertically upwards. From the above application examples, it can be seen that a narrow peripheral edge 20 is achieved. Simultaneously . that the precise arrangement of Verankerungsöffwe * gestures during compression molding of the tub 101, the voltages in the tub 30 Veran- a great significance kerungsöffnungen 21 excluded at precisely fixed points, and that in some applications, for example. B. in the preparatory work, in the context of the double floor, also the Außenab fitting pin 22 of the footrests 222 intervene during the construction of the double floor. In this case, the finished composite building board measures within a narrow range and the teeth must be precisely fixed automatically. By preforming, bund building board in that the openings in the 35 z. B. Compression molding of the tub, which at the same time incorporates the tub with precise dimensions in an economical manufacture- external reinforcement of the finished composite construction course. When compacting the plaite forms, the above conditions can be met in the conventional way cavities res without large concrete.

1 sheet of drawings

Claims (6)

Patent claims: 1. Process for the production of a self-supporting composite panel for raised floors, ceilings, Roofs or the like, in which in one of a material with high tensile strength and high Young's modulus, e.g. B. sheet steel, cavity formed a flowable or pourable and curable Material with low tensile strength and low modulus of elasticity, e.g. B. concrete, introduced the material with high tensile strength and high modulus of elasticity as reinforcement the plate is used, characterized that the material with high tensile strength and holiPTi modulus of elasticity as open at the top Tub (1, iöO, 1 λ) is preformed that then the flowable or pourable material (3) in approximately the volume of the cavity of the Tub appropriate dosage is introduced and at least vorverdichtot and that then the flowable or pourable material during or after compaction or pre-compaction is brought to the desired volume. 2. The method according to claim 1, characterized in that the flowable or pourable material (3) is introduced into the tub (1) in a slight overdose and after Ae.m compression to bring about the desired volume of excess material (3 ') ubges' - is soaked or squeezed. 3. The method according to claim 1, characterized in that the flowable or pourable Material (3) introduced into the tub (!, La) in a slight overdose and the desired Volume takes place during compression by pressing out excess material through openings (2, 18) in the tub. 4. The method according to claim 1, wherein the flowable or pourable material precompacts is, characterized in that the flowable or pourable material (3) is slightly underdosed is introduced into the tub (100) and the desired volume and compression is achieved by forming cavities (120) in the material 5. The method according to claim 4, characterized in that by pressing tools (12) Openings (2) are pressed into the tub (100) and, by continuing the pressing tools, the Redensification is brought about. 6. The method according to claim 1, wherein the flowable or pourable material precompacts is, characterized in that the flowable or pourable material (3) is slightly underdosed is introduced into the tub and that during the pre-compression of the flowable or pourable Material a compensating layer of small thickness made of a heat-inflatable and hardenable synthetic resin or the like. Is bound to the flowable or pourable material.