NL1030969C2 - Casting method for slab containing channels, used for floors or ceilings in buildings, involves forming channels in concrete layers cast around heating or cooling pipes - Google Patents

Abstract

A concrete core activating means is cast in an open mold and then a first layer of concrete is cast on top, followed by a second layer of concrete. At least one channel (28) is formed in the first and/or second concrete layer during casting and the concrete core activating means is completely enclosed by the concrete. The activating means comprises one or more heating and/or cooling pipes (6). Independent claims are also included for the following: (A) Slab (23) comprising a concrete upper shell and concrete lower shell, one or both of the shells containing at least one channel extending in the slab length direction and the lower shell containing a concrete core activation means secured to a length reinforcing structure (5); and (B) Floor comprising one or more of these slabs.

Description

CHANNEL PLATE WITH CONCRETE CORE ACTUATION

The present invention relates to a method for manufacturing a channel plate with collapsed concrete core activation; on a channel plate available with the said method; on a channel plate and on a floor provided with said channel plate.

Channel plates have been used for a long time when building buildings. The channel plates are hereby used primarily for forming floors and ceilings. A channel plate comprises a concrete plate which is provided with longitudinally extending cavities or channels. A channel plate floor comprises channel plates which are provided with a first and second support edge for being able to form a supported floor field quickly and efficiently. The channel plate comprises a concrete lower shell and a concrete upper shell connected thereto, wherein a longitudinal reinforcement is arranged in the lower shell from one bearing edge to the other bearing edge. The lower shell and / or upper shell is designed in such a way that it can absorb and transmit the transverse forces expected and provided for the channel plate, and if desired also the bending forces, to the support edge.

Partly due to the rising energy costs and an increasingly strict environmental policy, there is a growing need for 25 alternative and more sustainable ways of heating and cooling buildings. Nowadays, however, this often happens with radiator and air conditioning systems respectively. However, these systems consume a relatively large amount of energy. Another disadvantage of these systems is that it is hardly possible to get a homogeneous temperature distribution in a space. This is often perceived by users of a building as unpleasant and is not healthy due to 1030969 2 dust swirls. A further disadvantage is that the installations take up a lot of fixed space.

From the Dutch patent NL 1 017 845 a floor heating system is known in which the heating pipes 5 are installed in the existing channels of the channel plate floor. However, the known system has a limited efficiency, since the air in the channels of the floor is a poor heat conductor and therefore only a limited heat transfer from the heating pipes and the concrete floor is achieved.

It is an object of the present invention to provide a solution to the aforementioned disadvantages.

A first aspect of the present invention relates to a method for manufacturing a channel plate comprising: - providing an open mold, which mold is provided with a bottom; - installing concrete core activators in the open mold; - pouring a first layer of concrete into the open mold, - pouring a second layer of concrete onto the first layer; wherein during pouring of the first and / or the second layer at least one channel is formed in the first and / or second layer and the concrete core activating means are poured into the concrete of the first and / or second layer such that the concrete completely encloses the concrete core activating means encloses. By collapsing the concrete core activation means in the channel plate, good heat conduction between the concrete core activation means and the concrete mass of the channel plate can be achieved. Due to this relatively good transfer, the duct plate can be given such a temperature that as a result of the radiant heat developed by the duct plate in the building, a comfortable indoor climate can be provided. Moreover, this can lead to a more homogeneous temperature distribution in a building with a relatively low energy consumption.

It is to be noted here that concrete core activation means can be understood to mean means which serve for transferring to or taking up heat or cold from channel plate, or, more generally, means for conditioning the concrete mass. In a preferred embodiment the concrete core activating means comprise one or more heating and / or cooling pipes that can be flowed through with fluid (liquid or gas, usually water) of suitable temperature.

Furthermore, it is preferable if the concrete core activation means are attached to reinforcement extending in the longitudinal direction of the open mold. An advantage of this is that in this way it is guaranteed that the concrete core activating means remain in the correct position during pouring, that is to say that they do not shift. The concrete core activation means therefore end up in the correct position in the cured plate. It is thus achieved that a good heat / cold distribution can be obtained in the plate. Moreover, this also has a favorable effect on the mechanical properties of the plate. Furthermore, by connecting the concrete core activation means to the reinforcement of the channel plate, it is achieved that in the cured plate one knows exactly where the concrete core activation means are located. This prevents the concrete core activation from being damaged when mounting the plates, such as for example by drilling. The reinforcement preferably comprises prestressing reinforcement or mild steel reinforcement.

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During the method according to the invention, a recess is preferably provided on one side of the first and / or second concrete layer, such that connections of the concrete core activation means protrude.

The advantage of this is that the connections of the concrete core activation means of different channel plates can be attached to each other and / or to supply / discharge manifolds. This makes it possible to centrally control the concrete core activation means.

A second aspect of the present invention relates to a channel plate obtainable according to the method described above.

A third aspect of the present invention relates to a channel plate comprising a concrete bottom shell and a concrete top shell connected thereto, which top shell and / or bottom shell is provided with one or more channels extending in the longitudinal direction of the plate, and wherein at least the bottom shell is provided with a longitudinal reinforcement and with collapsed concrete core activating means, wherein the concrete core activating means are attached to the longitudinal reinforcement.

An advantage of such a channel plate is that a very good energetic transfer is obtained between the concrete core activation means and the concrete mass of the channel plate. Because the concrete core activating means are connected to the reinforcement and the position of the concrete core activating means is thus precisely determined, a good heat / cold distribution in the slab is achieved. This has a favorable effect on the mechanical properties of the plate as well as on the energy consumption.

Furthermore, by connecting the concrete core activating means to the reinforcement of the channel plate, it is achieved that in the cured plate one knows exactly where the concrete core activating means are located. This prevents the concrete core activating means from being damaged by, for example, drilling when mounting the plates. The reinforcement preferably comprises prestressing reinforcement or mild steel reinforcement.

An advantage of the fact that the concrete core activating means are included at least in the bottom shell is that the concrete core activating means are located in a solid part of the channel plate, whereby a relatively large solid surface is obtained in order to be able to effectively regulate the temperature in a building, space.

However, it is preferable to also include the concrete core activators in the upper shell. An even better temperature control of the channel plate can thus be obtained.

In a preferred embodiment according to the present invention, the upper shell and / or lower shell comprises a recess for connections of the concrete core activation means. An advantage hereof is that the connections of the concrete core activation means of different channel plates can be attached to each other. This makes it possible to centrally control the concrete core activation means.

The channel plate is preferably provided with connecting means for mutually connecting plates adjoining one another in the longitudinal direction. Such connecting means preferably comprise cup connections.

It is furthermore preferred if the concrete core activating means are positioned between the channels of the channel plate and the longitudinal reinforcement. A very good energetic profile is thus obtained.

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A fourth aspect of the present invention relates to a floor, which floor comprises one or more of the floor plates described above.

The connections of the concrete core activation means of one plate are herein preferably coupled to the connections of the concrete core activation means of another plate or to one or more manifolds.

Furthermore, the concrete core activating means preferably comprise one or more heating and / or cooling pipes.

Mentioned and other features of the method for manufacturing the channel plate, the channel plate and the floor according to the invention will be further elucidated hereinafter on the basis of a number of exemplary embodiments which are only given by way of example 15 without thereby affecting the invention deemed to be limited. Reference is hereby made to the accompanying drawings in which:

Figure 1 shows a perspective view of a dump track provided with a dump machine with which a channel plate floor according to the invention can be manufactured;

Figure 2 shows a more detailed top view of the dump track near the connection of two successive channel plates; Figure 3 shows a section along III / III at the location of the dumping machine; and

Figure 4 is an end view of a channel plate floor according to a preferred embodiment of the invention.

Figure 1 shows a pouring track 1 which is provided in a known manner with a bottom 4 and two track ends 3. The pouring track 1 thus forms an elongated track open at the top on which concrete can be poured for the concrete floor. As shown, the dump has been made suitable for manufacturing a number of channel plates one after the other. The length of such a dump is therefore in the order of magnitude of 100 meters or more.

A number of parallel reinforcement elements 5 extend in the longitudinal direction of the dump track 1. These reinforcement elements 5 are for instance made of steel and are tensioned between the two end ends 3 of the dump 1. The reinforcement elements are arranged at a short distance a (typically approximately 3 to 5 cm; Figure 4) above the bottom 4 of the dump 1 .

One or more heating and / or cooling pipes, also referred to as climate pipes 6, are provided on the reinforcement elements 5 with coupling elements not shown. The climate pipes 6 can be arranged in a hose-shaped pattern over substantially the entire plate length and width of each of the channel plate to be produced in the dump track 1, as is shown in figures 1 and 2. In the embodiments shown the coupling elements ensure that the climate pipes 6 extend at a distance (b) from the bottom such that the climate pipes 6 are positioned at a suitable position between the reinforcement elements and the channels of the channel plate. Moreover, by connecting the climate pipes 6 to the reinforcement elements 5, it is achieved that the climate pipes 6 do not shift during the pouring of the concrete.

The longitudinal sides 2 of the dump track 1 are furthermore provided with rails 9 on which the wheels 8 of a dump machine 7 to be described later can be moved. The wheels 8 of the dump machine 7 are mounted in a chassis 10 in which a first dump bin 11 and a second dump bin 12 are arranged. Figure 3 shows the construction of the dumping machine 7 in detail.

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Figure 3 shows that the first cistern 11 is provided on its underside with a funnel-shaped conduit 14 which is provided with an outlet nozzle 16 along which the concrete mortar B can be poured into the caster track 1 (direction Ρ3). Similarly, the second cistern 12 is provided with a funnel-shaped conduit 15. The concrete mortar B in the second cistern 12 can be poured into outlet site 1 via outlet mouth 17 on the underside of the conduit 15 (direction P2).

A support 10 is attached to the underside of the chassis 10. One or more horizontal pipes 21 are provided on the support 20, which pipes provide the required elongated channels in the channel plate floor, as will be apparent from the following.

The transport machine 7 can be transported by means of drive means (not shown) over the rails 9 of the dump 1. Figures 1 and 3 show the situation in which the dump machine 7 moves from left to right (direction P3).

The layer of concrete that first arrives at the bottom 4 of the dump lane 1 comes from the first dump bin 11, as is clearly shown in Figure 3. Due to the outflow speed from the dump bin 11 and the speed of displacement of the dump machine 7 properly adjusted, the thickness dj of the first layer 25 can be varied. In all cases, however, the first layer will be chosen so thick that the reinforcement elements 5 and the climate pipes 6 will be entirely through the concrete from the first layer. cistern 11 are enclosed.

j

The thickness dx of the first concrete shell 25 can be chosen such that the boundary layer 23 between the first and two layers, that is to say the top of the first layer, extends at approximately the same height as the bottom of the aforementioned pipe 21. However, it is also possible to increase the thickness of the first layer to the thickness of the first layer so that the first layer partially surrounds said pipe 21. This situation is shown in figures 3 and 5. In any case, the thickness of the first layer must be so large that when applying the second layer the reinforcement and any concrete core activating means are not touched by the machine with which the second concrete layer is poured .

The concrete mortar for this concrete layer 26 comes from the second cistern 12. Because the cistern 7 moves and the pipe 21 has a finite length, channel-shaped cavities will arise where pipe 21 has temporarily been located but has already been removed. These cavities form the channels 28 of the channel plate floor.

In the embodiment shown in Figure 4, it is shown that the climate pipes 6 are provided at a higher position in the floor 22, 23 than the longitudinal reinforcement elements 5 (distance b> distance a). In other embodiments (not shown), the conduits 6 can also be provided at other positions in the first layer 25. It is important that both the longitudinal reinforcement elements 5 and the climate pipes 6 are arranged in the lower shell 25 of the channel plate floor 22, 23.

The rights sought are not limited to the preferred embodiments of the invention described herein, but are defined by the following claims within the scope of which many modifications are conceivable.

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Claims (15)

CLAIMS 1. Method for manufacturing a channel plate provided with a number of channels, comprising: 5. providing an open mold, which mold is provided with a bottom; - installing concrete core activators in the open mold; - pouring a first layer of concrete into the open mold, - pouring a second layer of concrete onto the first layer; wherein during the pouring of the first and / or the second layer at least one channel is formed in the first and / or second layer and the concrete core activating means are poured into the concrete of the first and / or second layer such that the concrete completely encloses the concrete core activating means encloses. 2. Method as claimed in claim 1, comprising pouring the first layer of concrete of such a thickness that the concrete core activating means are completely enclosed by the concrete of the first layer. 3. Method according to claim 1 or 2, wherein a first part of the channel is formed in the first concrete layer and a second part of the channel is formed in the second concrete layer. A method according to any of claims 1-3, comprising attaching the concrete core activating means to reinforcement extending in the longitudinal direction of the open mold. A method according to any one of claims 1-4, wherein a recess is provided on one side of the first and / or second concrete layer, such that connections of the concrete core activation means protrude. 1030969 Channel plate obtainable with the method according to one of claims 1-5. 7. Channel plate comprising a concrete lower shell and a concrete upper shell connected thereto, which upper shell and / or lower shell is provided with one or more channels extending in the longitudinal direction of the plate, and wherein at least the lower shell is provided with a longitudinal reinforcement and with collapsed concrete core activation means, wherein the concrete core activation means are attached to the longitudinal reinforcement. Channel plate as claimed in claim 7, wherein the upper shell is also provided with concrete core activation means. 9. Channel plate as claimed in any of the claims 7-8, wherein the upper shell and / or the lower shell comprises one or more recesses for external connections of the concrete core activation means. 10. Channel plate according to claims 7-9, wherein the longitudinal reinforcement comprises mild steel and / or prestressed reinforcement. 11. Channel plate as claimed in any of the claims 7-10, wherein the plate is provided with connecting means for mutually connecting plates adjoining one another in the longitudinal direction. 12. Channel plate according to any of claims 7-11, wherein the concrete core activation means are positioned between the channels of the channel plate and the longitudinal reinforcement. A floor comprising one or more channel plates according to any of claims 6-12. 14. Floor as claimed in claim 13, wherein the connections of the concrete core activation means of one plate are coupled to the connections of the concrete core activation means of another plate. Method or channel plate according to at least one of the preceding claims, wherein the concrete core activation means comprise one or more heating and / or cooling pipes. 1030969