KR100959025B1 - Method for fabricating the exposure concreate pannel - Google Patents

Abstract

PURPOSE: A method for manufacturing an exposed concrete panel is provided to naturally express unique textures on the surface of the concrete panel by vibrating a mold and to prevent damage to the concrete panel by maximizing mechanical strength. CONSTITUTION: A method for manufacturing an exposed concrete panel comprises the following steps: a mold preparation step provides a mold(100) with a cavity by fixing multiple plates(120) on the outer circumference of a main board(110) using a connecting part(125); a concrete panel molding step supplying concrete to the cavity and curing the concrete after applying a vibration to the mold; a side plate separation step separating a side plate from the main plate after decomposing the connecting part; and a panel separation step separating the molded concrete panel from the main plate.

Description

Method for Fabricating the Exposure Concreate Pannel}

The present invention relates to a method for manufacturing an exposed concrete panel, and more particularly, to an exposed concrete panel manufacturing method improved to be able to manufacture a concrete panel exposed to the exterior wall of the building firmly without failure.

In general, a concrete panel is a building finishing material that is molded into a square plate with a concrete material so that the exterior surface is neatly finished, not only has excellent strength and durability, but also has a beautiful appearance.

Since these concrete panels must be constructed continuously using separate anchorages on the walls of buildings such as houses or buildings, the standard is not only constant but also the molded panel specifications must be exactly the same as the design.

In addition, due to the characteristics of the concrete panel, the surface texture should be natural, and the side of the panel should be free of stains such as water marks generated during concrete molding.

In addition, the construction of the building wall has to be made of a thin thickness to facilitate the handling and transport of workers, as well as to provide sufficient strength to prevent cracking and damage caused by external forces.

On the other hand, Republic of Korea Patent Publication No. 2009-0062535 (2009.06.17. Publication date) discloses a method for manufacturing a concrete panel used as a surface finishing material of the building.

This is simply to cast concrete in a mold having an open top, and to cure the poured concrete to produce a concrete panel.

However, this prior art is not only easy to separate and detach the cured concrete panels after being poured from the mold open to the upper part in the process of manufacturing the concrete panels, but also allows the operator to evenly apply the demolding oil to the inner surface of the mold before the concrete is poured. Since it has to be applied, the surface of the panel is damaged when demolding, which lowers the product yield and increases the worker's workload.

In addition, in the process of drying and curing the concrete panel separated from the mold, the panel is warped to the front side due to the difference in density between the front and rear surfaces of the panel. If such warpage is excessive, the construction is impossible and the product must be disposed of. Resulted in a defect.

Accordingly, the present invention is to solve the above problems, the object is to demould without demolishing the concrete panel molded from the mold, giving a sufficient vibration to the mold has a unique texture on the surface of the concrete panel produced The present invention provides a method of manufacturing an exposed concrete panel that can be naturally expressed and can fundamentally prevent water leakage from occurring at edge portions of concrete panels, and can dry molded concrete panels without bending deformation.

As a specific means for achieving the above object, the present invention, in the method for producing a concrete panel, a plurality of side forming plates on the outer edge of the body plate formed in the intaglio portion of a predetermined depth on the upper surface as a fastening portion A mold preparation step of fixing and providing a mold having a cavity open to the top; A concrete molding step of supplying and pouring concrete into the cavity, applying vibration to the mold, and curing the concrete; A side plate separating step of disassembling the fastening part and separating the side plate for side forming from the body plate in a horizontal direction; And a panel separation step of separating the molded concrete panel from the body plate.

Preferably, an inclined surface that is inclined at a predetermined angle is formed between the bottom surface of the intaglio portion and the fixed installation surface on which the side plate is fixed to form an edge surface between the front and side surfaces of the concrete panel.

Preferably, the intaglio is formed to a depth of 1/4 to 1/5 of the total thickness of the body plate.

Preferably, the intaglio portion has a plurality of ridges to be provided with a plurality of grooves are formed in the bottom surface in a predetermined depth in the front of the concrete panel.

Preferably, the side forming side plate includes at least one fitting groove forming iron to form a fitting groove of a predetermined depth on the side of the concrete panel, the fitting forming iron is fitted to the side of the concrete panel And a vertical fixing part fixed to the outer surface of the side plate for forming a side to form an arrangement groove connecting the groove and the rear surface, and a protrusion extending bent at a right angle from a lower end of the fixing part.

More preferably, the protruding portion is provided in a cross-sectional shape that becomes narrower toward the tip.

Preferably, the concrete further comprises a certain amount of fiber reinforcement.

Preferably, the method further includes a panel drying step of naturally drying the concrete panel separated from the main body plate, wherein the panel drying step comprises stacking a plurality of concrete panels horizontally and multilayered so that the front face downward and the rear face upward. In order to maintain panel spacing between the stacked concrete panels, a plurality of spacing members are disposed.

More preferably, the space maintaining member is disposed so that the upper end is inserted into the groove formed in the front of the concrete panel and the lower end is in contact with the rear surface of the adjacent concrete panel.

According to the present invention, a plurality of side forming plates are fixed to an outer edge of a main body plate having a concave portion of a predetermined depth to provide a mold having a cavity open to the upper side, and a certain amount of concrete is supplied and poured into the cavity, After the vibration is applied, the concrete is cured and molded, the side plate for side forming is horizontally separated from the main plate, and the concrete panel formed from the main plate is manufactured to produce an exposed concrete panel, thereby forming the edge of the concrete panel formed from the mold. It is possible to demould without damaging the part and to give sufficient vibration to the mold to naturally express the unique texture on the surface of the manufactured concrete panel, thereby improving the quality of the manufactured concrete panel.

In addition, concrete panels can be manufactured without shrinkage deformation in accordance with pre-designed specifications, and the mechanical strength can be sufficiently secured while maintaining the panel thickness in a thin state, thereby preventing panel breakage during construction on building walls, and poor construction. Can be minimized.

In addition, it is possible to prevent water leakage through the boundary area between the body plate and the side plate to fundamentally prevent water leakage at the corners and sides of the concrete panel, thereby improving the quality of the concrete panel product manufactured.

In addition, since the warpage deformation due to the difference in moisture drying speed between the front and rear surfaces may be prevented in the process of drying the molded concrete panel, it is possible to manufacture an exposed concrete panel having excellent quality without warpage deformation.

In addition, in the process of constructing the concrete panel continuously along the building wall using the anchorage by forming a fitting groove having a placement groove on the side of the concrete panel can be placed in the space formed by the upper and lower placement grooves Therefore, by minimizing the gap between the concrete panels arranged up and down, it is possible to simplify the post-processing to fill the panel gap and to minimize the post-processing after construction.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 (a) (b) (c) (d) (e) is a process diagram of a method for manufacturing an exposed concrete panel according to a preferred embodiment of the present invention.

Method for producing exposed concrete according to a preferred embodiment of the present invention, as shown in Figure 1 (a) (b) (c) (d) (e), mold preparation step, concrete panel molding step, side plate separation step And a panel separation step.

In the mold preparation step, the bottom surface and the side are closed, and the upper part to which the concrete is supplied is prepared by providing a mold 100 having an open cavity to a work object not shown.

2 to 4, the mold 100 includes a body plate 110 and a plurality of side plates 120 for forming side surfaces, and the body plate 110 is a concrete panel to be manufactured. It is made of a substantially visual plate-like metal plate formed by recessing the intaglio portion 112 of a predetermined depth on the front surface and the upper surface corresponding to the.

A plurality of fastening holes 114 are formed through the outer edge of the body plate 110 at predetermined intervals, and the fastening holes 114 are coincident with the fastening holes 124 formed in the side plate 120. .

And, as shown in Figure 5 (a) (b) between the bottom surface of the intaglio portion 112 and the fixed installation surface on which the side plate for side forming 120 is fixed, the concrete panel 200 to be manufactured An inclined surface 113 that is inclined at a predetermined angle is formed to form an edge surface 204 that is inclined at a predetermined angle between the front surface 201 and the side surface 203.

Here, the inclined surface 113 is preferably provided to have an angle of approximately 45 degrees with respect to the bottom surface of the intaglio portion.

Accordingly, by forming the corner surface 204 by the inclined inclined surface 113 between the front and side surfaces of the concrete panel 200 manufactured using the mold 100, it is transmitted to the corner of the concrete panel It is to prevent the edge portion from being damaged by the external force.

The intaglio portion 112 is preferably formed to a depth of about 1/4 to 1/5 of the total thickness of the body plate 110, which is the depth of formation of the intaglio portion of the body plate 110 If the plate thickness of the main body plate becomes thinner than 1/4 with respect to the thickness T, the surface state of the manufactured panel cannot be imparted because it cannot impart uniform and stable vibration to the concrete when vibrating for concrete placement. If the depth of formation of the intaglio portion is shallower than 1/5 to the total thickness T of the main body plate 110 and the plate thickness of the main body plate is thickened, This is because the contained water leaks and causes surface defects such as water leak marks on the side of the manufactured panel.

In addition, the bottom surface of the intaglio portion 112 is provided with a plurality of ridges 115 to be provided with a plurality of grooves 205 recessed in a predetermined depth on the front of the concrete panel to be manufactured.

The ridge 115 is preferably provided in the cross-sectional shape of the outer diameter is reduced from the upper end to the lower end to facilitate the demolding operation when the panel is separated from the main plate 110.

Although the ridge 115 is illustrated and described as being integrally provided on the bottom surface of the intaglio portion 112, the ridge portion 115 is not limited thereto and may be provided in a bottom surface of the intaglio portion 112.

In addition, the side plate forming side 120 is made of a metal angle member of the 'b' cross-section fixed to the outer edge of the body plate 110 by a plurality of fastening portion 125, such a side plate 120 Is formed through the plurality of fastening holes 124 matching the fastening hole 114 formed in the main body plate 110 to be mounted on the upper surface of the main body plate 110, and the right angle direction from the end of the horizontal portion It includes a vertical portion that is bent to form a side of the concrete panel to be manufactured to have a certain height.

Accordingly, a plurality of side plates 120 for forming side surfaces are provided through a plurality of fastening portions 125 including fastening bolts 125a, nuts 125b, and washers 125c for each outer edge of the body plate 110. By being fixedly installed, as shown in FIG. 1 (b), a cavity having a predetermined size opened upward to fill and pour concrete by assembling the body plate 110 and the plurality of side plate forming side plates 120. It is provided with a mold 100 to be formed.

At this time, the side plate forming side plate 120 fixed by the fastening unit 125 should be fixed so as not to loosen the fastening state by the vibration applied to the body plate (110).

Here, the side plate forming side plate 120, as shown in Figure 5 (a) (b), at least one for forming a fitting groove 206 of a predetermined depth on the side of the concrete panel 200 to be manufactured The fitting groove forming iron 126 is provided.

As shown in FIG. 4, the fitting groove forming iron 126 is perpendicular to the vertical fixing part 126a fixed to the outer surface of the side plate 120 and the lower end of the fixing part 126a. It includes a protrusion 126b is bent to extend a predetermined length toward the cavity side.

The protrusion 126b is provided in a cross-sectional shape that becomes narrower toward the front end, so that the separation and separation of the fitting groove forming iron 126 when the side plate forming side plate 120 is separated is caught with the fitting groove 206. It works smoothly without

In addition, the fitting groove 206 formed in the side surface 203 of the concrete panel 200 corresponding to the fitting forming iron, as shown in Figure 6 (a) (b), by the fixing part the concrete An arrangement groove 206a connected to the rear surface 202 of the panel 200 is formed.

Accordingly, by forming the fitting groove 206 having the placement groove 206a on the side of the concrete panel 200, the building using the fixing unit 210 having the upper locking jaw 211 and the lower locking jaw 212 In the process of continuously constructing the concrete panel on the wall, the upper and lower fitting grooves 206 are inserted into the upper and lower fitting grooves 206, respectively, in the space formed by the upper and lower positioning grooves 206a. Since it can be arranged, the gap between the concrete panels arranged up and down can minimize the occurrence.

As shown in FIG. 1 (c), the concrete panel molding step is performed by filling and pouring a certain amount of concrete into the cavity of the mold 100, and placing the concrete panel at a predetermined period on the body plate 110 of the mold 200. After the vibration is applied for a predetermined time, the concrete is molded to allow demolding from the mold by curing the concrete for a predetermined time.

Concrete (C) supplied into the cavity is preferably used by mixing the fiber reinforcing material 220 to maintain the thickness of the concrete panel while maintaining good thickness.

The fiber reinforcement 220 refers to a short-fiber reinforcement used to improve the mechanical properties of the concrete panel, the concrete panel (fiber reinforcement concrete panel) in which the reinforcement is evenly distributed compared to the general concrete panel tensile strength, flexural strength It is excellent in plastic shrinkage and dry shrinkage cracking can be generated relatively less than the general concrete panel.

In addition, since the fiber reinforcing material included in the concrete (C) has a very thin fiber structure, even if the thickness of the concrete panel 200 is sufficiently thin, problems such as rust generation that may occur when using reinforcing bars are not caused at all. It is the most suitable material for the concrete panel to be used as.

As the fiber reinforcing material, steel fiber, synthetic fiber, glass fiber, carbon fiber, etc., which are made of carbon steel and stainless steel as a raw material, can be optionally used. It is most preferable in all aspects, such as resistance to.

In the manufacturing method according to the present invention, the fiber reinforcement used in the concrete is intended to produce a panel with a thin thickness, PP fiber as the fiber reinforcement is 0.1 ~ 2 mm in diameter, 4 ~ 6 cm in length of the thread piece structure It is preferable to process the furnace and mix it with concrete.

It is more preferable that such a PP fiber is formed in a bent shape rather than a straight shape in terms of the development of strength.

The amount of the PP fiber is preferably about 2 to 4 kg per 1 m 3 of concrete, more preferably about 2.5 to 3.5 kg per 1 m 3 of concrete.

In addition, the thickness of the panel can be reduced while applying the fiber reinforcement 220 is about 15 ~ 50 cm, more preferably appeared to be 25 ~ 35 cm.

In order to precisely finish the front surface 201 constituting the concrete panel 200, the coarse aggregate included in the concrete is most preferably 13 mm maximum.

On the other hand, in order to improve the strength and finish degree of the concrete panel 200, it is good to apply a fine vibration to the mold 100 in the step of curing the concrete in the mold 100, more excellent physical properties when applying steam curing It was found to have.

Here, in the process of providing vibration to the mold 100, by separating the high frequency and low frequency and applying a vibration of a predetermined period to the mold for 30 seconds each, the entire body plate on which the concrete is poured can be evenly vibrated, The front surface of the concrete panel product to be manufactured can be formed evenly.

In addition, the curing process of the concrete panel is a short time rapid curing of the surface texture of the concrete panel product is not natural, hot air curing using dry hot air can reduce the dust generation and strength of the concrete panel, It is preferable to cure the concrete panel by steam curing method using steam.

In addition, the concrete (C) may include a certain amount of hardener to reduce the curing time of the concrete panel in the cavity of the mold.

Subsequently, the side plate separation step is to separate the side plate forming side plate 120 assembled via the fastening portion 125 to the body plate 110, which is shown in Figure 1 (d), When the panel side forming side plate 120 freed from the body plate 110 by the disassembly of the fastening part 125 is pulled out and separated in the horizontal direction, the concrete is formed on the intaglio portion 112 of the body plate 110. The cured and cured substantially square plate-shaped concrete panel 200 remains, and the rear and side surfaces of the concrete panel 200 are exposed to the outside.

At this time, the upper and lower locking jaw of the fixing unit is inserted into the side surface 203 of the concrete panel 200 by at least one fitting groove forming hardware 126 provided in the side plate forming side plate 120. At the same time to form a fitting groove 206 is connected to the rear surface 202 of the concrete panel 200 to form a placement groove 206a in which the anchorage is disposed.

The panel separating step is to separate the cured concrete panel 200 from the body plate 110, the side plate for forming the fitting groove is separated, as shown in Figure 1 (e).

The concrete panel 200 separated from the main body plate 110 has an edge surface 204 by an inclined surface formed on the intaglio portion of the main body plate 110 at a corner portion that is a boundary area between the front surface 201 and the side surface 203. And a plurality of recesses 205 are recessed on the front surface 201 by a plurality of ridges 115 provided on the bottom surface of the intaglio portion 112.

On the other hand, the concrete panel 200 separated from the main body plate to remove the moisture contained in the panel by performing a panel drying step of natural drying for a predetermined time in the air.

In the panel drying step, the front surface 201 of the concrete panel dried in the air is formed to be in contact with the bottom surface of the intaglio portion of the mold 100, and thus is formed very smoothly, while the rear surface 202 is formed as it is exposed to the atmosphere. Will be formed rougher than the front surface 201.

In this case, since the rear surface 102 of the roughly formed concrete panel 200 has a larger area exposed to the atmosphere than the smoothly formed front surface 101, the amount of moisture contained in the concrete panel is relatively larger than that of the front surface. As shown in FIG. 7B, the concrete panel 200 may be flexibly deformed so that the rear center region is convex upward and the front center region is concave downward.

Accordingly, in order to dry a large amount of concrete panels in a limited space while preventing the bending deformation of the concrete panel 200, as shown in Fig. 7 (a) (b), the front surface 201 is directed downward and the rear surface ( The plurality of concrete panels 200 are horizontally stacked in a multi-layered manner so that 202 faces upward, and a plurality of gap maintaining members 230 are disposed between the stacked concrete panels 200 so as to maintain panel gaps.

Here, the gap maintaining member 230 is disposed in the groove 205 formed in the front of the concrete panel 200 is inserted into the upper end is in contact with the rear surface 204 of the concrete panel 200 adjacent to the lower end. It can also be arranged to.

In this case, natural drying of the front and rear surfaces of the concrete panel may be uniformly performed under the same conditions by the air flow freely passing through the gap formed by the gap maintaining member between the concrete panels.

In addition, the concrete panels 200 stacked in a multi-layer horizontally receive the external force during panel drying due to the vertical load (P) applied directly below by the self-weight so that the deflection of the concrete panel to be deflected to the top to compensate for the bending of the concrete panel Minimizing deformation, which makes it possible to produce flat quality concrete panels.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Figure 1 (a) (b) (c) (d) (e) is a process diagram of a method for manufacturing an exposed concrete panel according to a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view showing a mold used in the method of manufacturing an exposed concrete panel according to a preferred embodiment of the present invention.

3 is an assembly view showing a mold used in the method of manufacturing an exposed concrete panel according to a preferred embodiment of the present invention.

Figure 4 is a partial detailed view showing a coupling state between the body plate and the side plate in the mold used in the method for producing an exposed concrete panel according to an embodiment of the present invention.

5 is a view showing exposed concrete manufactured by a method for manufacturing exposed concrete panels according to a preferred embodiment of the present invention.

(a) is a perspective view,

(b) is sectional drawing.

6 is a side view of the exposed concrete manufactured by the method of manufacturing exposed concrete panel according to an embodiment of the present invention,

(a) is a perspective view,

(b) is a coupling state diagram.

FIG. 7 illustrates a process of drying exposed concrete manufactured by the method of manufacturing exposed concrete panels according to an exemplary embodiment of the present invention.

(a) is a perspective view,

(b) is a front view.

   Explanation of symbols on the main parts of the drawings

100 mold 110 body plate

112: intaglio 113: inclined surface

115: ridge 120: side plate for side forming

125: fastening portion 126: iron for forming the fitting groove

200: concrete panel 201: front

202: rear 203: side

204: corner surface 205: groove

206: fitting groove 206a: placement groove

210: anchorage 230: spacing member

Claims (9)

In the method of manufacturing the concrete panel, A mold preparation step of providing a mold having a cavity open upward by fixing a plurality of side forming plates as fastening portions on an outer edge of a main body plate having a concave portion having a predetermined depth on an upper surface thereof; A concrete panel molding step of supplying and pouring concrete into the cavity, applying vibration to the mold, and curing the concrete; A side plate separating step of disassembling the fastening part and separating the side plate for side forming from the body plate in a horizontal direction; And And a panel separation step of separating the molded concrete panel from the body plate. Between the bottom surface of the intaglio portion and the fixed installation surface on which the side plate is fixed to form a slope inclined at an angle to form a corner between the front and side of the concrete panel, The side plate for forming the side includes at least one fitting groove forming iron to form a fitting groove of a predetermined depth on the side of the concrete panel, The fitting groove forming hardware is a vertical fixing part fixed to the outer surface of the side plate for forming the side to form an arrangement groove connecting between the fitting groove and the rear surface formed on the side of the concrete panel, and the fixing portion It includes a protrusion that is bent at a right angle from the lower end to extend a certain length, Further comprising a panel drying step of naturally drying the concrete panel separated from the body plate, In the panel drying step, a plurality of concrete panels are horizontally stacked in multiple layers such that the front faces downward and the rear faces upward, and a plurality of gap maintaining members are disposed to maintain panel gaps between the stacked concrete panels. Method for producing exposed concrete panels. delete The method of claim 1, The engraved portion is exposed concrete panel manufacturing method, characterized in that formed in a depth of 1/4 to 1/5 of the total thickness of the body plate. The method of claim 1, The engraved portion is exposed concrete panel manufacturing method characterized in that it has a plurality of ridges to be provided with a plurality of grooves are formed in the bottom surface in a predetermined depth in the front surface of the concrete panel. delete The method of claim 1, The protrusion is exposed concrete panel manufacturing method characterized in that provided in the cross-sectional shape narrowing toward the tip. The method of claim 1, The concrete is exposed concrete panel manufacturing method characterized in that it further comprises a certain amount of fiber reinforcement. delete The method of claim 1, The gap maintaining member is exposed concrete panel manufacturing method characterized in that the upper end is inserted into the groove formed in the front surface of the concrete panel is disposed so as to contact the rear end of the adjacent concrete panel.

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