ES2224840A1 - Fabrication of wood effect reinforced concave beams comprises pouring into a three interhinged sections moulds for final coating of the beam with acrylic resin - Google Patents

Abstract

Procedure for obtaining concrete beams imitation wood, comprises: preparation of concrete with a color imitate wood and with a minimum strength of 300 kg/cm2 preparation of a mold configuration corrugated and coated inside with a rubber relief to imitate wood pouring of concrete on the mold filling the mold with concrete removing the mold with the concrete in interior on the vibration table drying removing the concrete beam sanding and cleaning the entire surface of the beam, and hand application by roller of acrylic resin on all sides of the beam. Procedure for obtaining concrete beams imitation wood, comprises: preparation of concrete with a color imitate wood and with a minimum strength of 300 kg/cm2 preparation of a mold configuration corrugated and coated inside with a rubber relief to imitate wood closed end mold by special parts according to the decorative form that intended to give the beam ends mold arrangement on a vibrating table pouring of concrete on the mold until have a third of it provision of armor on concrete poured into the mold filling the mold with concrete, covering the whole armor, vibrate the concrete by vibro-conventional, which is passed all along the surface top of the concrete contained in the mold removing the mold with the concrete in interior on the vibration table drying for a period of 24 hours removing the concrete beam regarding mold, after it opens, storage of the beam during a period of a few days for final drying sanding and cleaning the entire surface of the beam, and hand application by roller of acrylic resin on all sides of the beam.

Description

Procedure for obtaining concrete beams armed imitating wood.

Object of the invention

The present invention relates to a procedure for obtaining reinforced concrete beams whose definitive termination imitates an old wooden beam, with all its relief, streaks and color, having different ends decorative finishes

It is an object of the invention to provide a method that, using a special mold, makes it possible to obtain a reinforced concrete beam that offers the same external appearance as an old wooden beam anywhere, be it " in situ ", in the workshop, etc.

Background of the invention

Currently, prefabricated beams imitation Old wood used in the works are divided into two classes: one corresponding to the interior beams, used as beams decorative overlays of fiber or cork, and other corresponding to the beams for outdoor pergolas, so that the latter They are usually made of concrete reinforced with cement so that once placed  be painted and decorated imitating wood.

In both cases the beams, although they try to imitate wood, do not offer a finish that could be confused with wood proper, being perceived even by non-experts That is about artificial products.

On the other hand, the use of wooden beams natural requires maintenance and yet it happens that sometimes destroy little by little, in some cases by moth attack, in others cases because the cure has not been optimal and they are twisted, in other cases crack, etc. In addition, the use of wood natural is the felling of trees so it is a system against the one who is currently fighting for the effects Ecological that this implies.

Description of the invention

The procedure that is recommended allows get reinforced concrete beams that mimic old wood, offering a final look that is confusing with wood natural.

For this, the procedure consists in preparing concrete with the color of the wood to be obtained, and with a minimum resistance of 300 Kg / cm2, so that that concrete it is poured into a special mold of corrugated configuration and of hinged side walls to allow opening and closing, those walls of the mold and bottom being internally provided with a special rubber coating that includes the relief of the wood to be imitated.

The mold is closed at its ends by parts that have to have a special configuration to determine the ends of the beam, ends that will be decorative or even straight, according to the shape of the inner edge of those pieces that close the ends of the mold.

Once prepared the mold in a referred way and equipped with the inner face of the rubber coating with a release agent, is arranged on a vibrating table that will be vibrating virtually the entire process of obtaining the beam, process that in addition to the referred phases includes the pouring of the previously prepared concrete in the referred mold until reaching approximately one third of it, at which time it is available the corresponding armor to then continue pouring concrete to fill the mold, completely covering the armor.

The concrete is then vibrated by a common vibro that is passed along the entire surface top of the concrete contained in the mold, finally remove the vibrating table assembly and keep it for a time period of approximately 24 hours in the process of dried

Then the beam is removed from the mold, by opening it, and then said beam for a period of time of a few days for its definitive drying, then sanding and cleaning the surface corresponding to the four faces of the beam, for finally proceed to the application by hand and by roller of a acrylic resin, thus obtaining the reinforced concrete beam that imitates wood with a series of advantages over beams Conventional natural wood and with respect to those so far they were made in imitation wood.

Among the advantages that can be cited, are They find the following:

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It is not required any maintenance

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It is not destroyed by The moth neither twists nor cracks.

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It doesn't burn and so therefore, in combination with the previous advantages, it is a beam of indefinite duration.

Finally and as one of the advantages fundamental is that being the reinforced concrete beam will avoid logically the use of wood and therefore the deforestation

The mold used in the procedure will be metal structure and is basically composed of three parts movable, one as bottom of the mold and two hinged sides longitudinally to the previous one, to carry out the arrangement perpendicular to those side walls with respect to the part of bottom and form the corrugated mold, which will be opened for the concrete beam extraction.

Said mold will logically complement each other. superiorly with means for retaining the side walls in working position.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1. Shows a perspective view of a mold in the open position, from which a reinforced concrete beam according to the procedure of the invention.

Figure 2. Shows the mold the previous figure in working disposition.

Figure 3. Shows pieces with different shapes to close the ends of the mold, allowing to obtain different decorative finishes of the reinforced concrete beam.

Figure 4. Shows a sectional view cross section of an example of a reinforced concrete beam imitating wood obtained according to the procedure of the invention.

Preferred Embodiment of the Invention

In view of the figures outlined you can be observed as the mold on which the Execution of the process object of the invention is a mold metallic consisting of three articulated parts, one central or intermediate (1) and the other two of greater width constituting the side walls (2) of the configuration mold fluted as shown in figure 2, since said mold it can occupy an opening position as represented in the Figure 1 or arrange the side walls (2) perpendicular to the intermediate part (1) and form the mold fluted depicted in figure 2.

Both the intermediate part (1) and the walls sides (2) have a coating or layer on their inner face of special rubber (4) that includes the relief of the wood, the surface of that rubber layer having a film being of release agent composed of oil to which a Natural black pigment with brush, leaving it impregnated.

The mold thus constituted is closed by its ends by pieces (5) whose part to be given inside of the mold can be straight (6), ... curved (6 ') or staggered (6 ''), or any other way that will determine the extremes Decorative beam to get.

Once the mold is prepared conveniently as it is represented in figure 2 and closed by any of the pieces (5) represented in figure 3, concrete is poured previously prepared with its wood color and with a resistance minimum of 300 Kg / cm2, up to approximately one third of the mold, at which time an armor (7) is arranged inside, which can be simple, double or with any configuration appropriate, to proceed definitively to the concrete filling, covering the armor (7).

Before pouring concrete into the mold, this It is arranged on a vibrating table and also stays in position working by means of semi-clamps or any other appropriate elements or means that will maintain the side faces in vertical position to maintain configuration corrugated mold.

Subsequently and after a short period of time After approximately one day, the mold is opened and the beam is removed (8) of reinforced concrete, whose outer surface (9) will be equipped with relief that imitates wood, and that logically corresponds to the inner surface of the inner layer or rubber coating (4).

After a few days of drying, the beam of reinforced concrete (8) is sanded over its entire surface and finally subjected to an acrylic resin application process, by roller by hand.

It is noteworthy the fact that independently of the vibration that it undergoes virtually constantly the mold during the whole process, after filling by concrete a vibration of this one is carried out.

Claims (2)

1. Procedure for obtaining reinforced concrete beams imitating wood, characterized in that it comprises a series of operational phases consisting of:

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Preparation of concrete with a color that mimics wood and with a resistance minimum of 300 Kg / cm2.

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Preparation of a configuration mold corrugated and internally coated with a rubber with relief to imitate wood;

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Closed of the mold ends using special pieces according to the shape decorative that is intended to give the ends of the beam;

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Disposition of mold on a vibrating table.

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Concrete pouring on the mold until it has a third of it.

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Disposition of the reinforcement on concrete poured into the mold;

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Filling the mold with concrete, covering all the armor;

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Concrete vibrating through a conventional vibro, which is passed along of the upper surface of said concrete contained in the mold;

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Mold removal with the concrete inside with respect to the table vibrated

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Drying for a Time period of approximately 24 hours.

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Extraction of the concrete beam with respect to the mold, after opening East;

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Storage of the beam for a period of time of a few days for its definitive dried up

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Sanding and cleaning of the entire surface of the beam;

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Hand application by means of an acrylic resin roller, on all sides of the beam.

2. Procedure for obtaining reinforced concrete beams imitating wood, according to claim 1, characterized in that the mold is formed by three articulated parts, an intermediate one, while the other two determine the lateral faces of the mold configuration of the mold, the which will be complemented by means that maintain the working position during the process.