JP2004181736A - Method for producing precast concrete plate having architectural finish tone surface and mold material used in the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a plate having a concrete architectural finish tone surface which is simple in construction. <P>SOLUTION: A mat-shaped mold material 4 is placed in a side mold 3 mounted on a base A. After a plastic cone mold material 5 is mounted on the mold material 4, concrete is charged into the mold 3. After the strength of the concrete reaches prescribed strength, the concrete is removed from the mold 3. In this way, a concrete architectural finish tone PC plate 1 having a plastic cone hole which does not need a decorative joint and mortar packing in the outside surface 2A is obtained. A three-dimensional pattern expressing a concrete architectural finish tone surface can be formed on the outside surface 2A of a concrete main body 2 by cutting without using the mold material 4 etc. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a precast concrete plate (hereinafter, referred to as a PC plate) whose surface is exposed and finished, and a mold used therefor.
[0002]
[Prior art]
For example, at the time of finishing the exterior and interior of a reinforced concrete building, the interior and exterior walls and the like may be finished with bare concrete due to design requirements. In such a case, conventionally, reinforcing bars are assembled at a construction site to form a formwork, and at this time, a rod-like member is attached to the formwork so that a decorative joint is formed. When the strength of the separator has been reached, it is removed from the mold, and to prevent rust from being generated at the end of the separator that protrudes into the recess of the plastic cone for mold assembly remaining on the surface of the concrete body, The interior is filled with waterproof mortar, etc., and finished with bare concrete.
[0003]
[Problems to be solved by the invention]
However, according to the above-described conventional bare concrete finishing method, since a concrete body is constructed at a construction site, rocks or nests are likely to be generated on the concrete body, and the aesthetic appearance of the bare concrete finish may be impaired. In order to prevent this, it is necessary to carefully carry out the construction plan and carry out the construction with great care, and this takes time and labor, so the construction period becomes longer, and the cost increases due to the longer construction period. This causes a problem. Furthermore, according to the conventional method of attaching a rod-shaped member in a mold frame to form a decorative joint, it is troublesome to attach a rod-shaped member serving as a mold material, and the cost must be increased. Also have.
[0004]
In addition, there is a problem that the construction cost is increased because an operation of rust prevention treatment is required to fill the hollow formed on the surface of the concrete body with waterproof mortar. Problems similar to those described above include not only PC board, but also mortar board, ceramic board, and glass fiber reinforced concrete (herein referred to as GRC) board to obtain a finished surface. Also occurs.
[0005]
An object of the present invention is to provide a method of manufacturing a precast concrete plate having an exposed finish surface, which can solve the above-mentioned problems in the prior art, and a mold used therefor.
[0006]
[Means for Solving the Problems]
According to the present invention, there is provided a method for manufacturing a precast concrete plate having an exposed finished surface, comprising the steps of: installing a side form on a base; A step of providing a mold material for forming a finished finish surface on the base in the mold, and thereafter, a step of pouring cast concrete into the side mold and solidifying it. A method for producing a precast concrete plate is proposed.
[0007]
According to the invention of claim 2, there is provided a method for producing a precast concrete plate having an exposed finished surface, comprising the steps of: installing a side form on a base; A method of laying a mat-shaped mold material having a joint type and a cone type thereon, and thereafter, a method of manufacturing a precast concrete plate, comprising: a step of placing concrete in the side formwork. Suggested.
[0008]
According to the third aspect of the present invention, there is provided a method for manufacturing a precast concrete plate having an exposed finish surface, wherein after producing the precast concrete plate, a pattern representing the exposed finish surface on the surface of the precast concrete plate. A method for manufacturing a precast concrete plate, characterized in that a precast concrete plate is formed by cutting.
[0009]
According to the invention of claim 4, there is provided a method for manufacturing a precast concrete plate having an exposed finish surface, wherein after manufacturing the precast concrete plate, an upper layer having a flat surface on the surface of the precast concrete plate. Wherein a pattern representing a finished surface is formed by cutting on the surface of the upper layer, and a method for producing a precast concrete plate is proposed.
[0010]
According to the invention of claim 5, there is provided a method for producing a precast concrete plate having an exposed finish surface, wherein after producing a precast concrete plate, the plate material having an exposed finish surface is formed on the surface of the precast concrete plate. A method for manufacturing a precast concrete plate characterized by being attached to the surface of a precast concrete plate is proposed.
[0011]
According to the invention of claim 6, there is provided a method for manufacturing a precast concrete plate having an exposed finish surface, wherein after the precast concrete plate is manufactured, the exposed finish pattern is transferred using a transfer sheet. A method for producing a precast concrete plate, characterized in that it is transferred to the surface of a precast concrete plate.
[0012]
According to a seventh aspect of the present invention, there is provided a form member for forming an exposed finished surface used for manufacturing the precast concrete plate according to the first, second, third, fourth, fifth or sixth aspect, There is proposed a molding material characterized in that the molding material has a mat shape in which a joint type and a cone type are integrally formed.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described in detail.
[0014]
FIG. 1 is a perspective view showing an example of a PC board manufactured so that the outer surface is exposed and finished by the method of the present invention. On the outer surface 2A of the concrete body 2 of the PC board 1, four grooves 21 to 24 simulating a joint trace by a concrete panel are formed as decorative joints, and a plurality of depressions simulating a wooden concrete trace are provided. 25, whereby the outer surface 2A has a bare concrete finish.
[0015]
In the present embodiment, the four grooves 21 to 24 divide the outer surface 2A of the concrete main body 2 into four small rectangular regions, and the plurality of recesses 25 form the quartered outer surface 2A of the concrete main body 2. 9 pieces each, and a total of 36 pieces are formed.
[0016]
Next, an embodiment of a method of manufacturing the PC board 1 shown in FIG. 1 will be described.
[0017]
First, as shown in FIG. 2, in a PC board manufacturing plant or the like, the side mold 3 is installed on a base A made of a steel plate or the like and provided in a horizontal state. The side formwork 3 is formed by connecting four formwork members 31 to 34 to form a hollow formwork as shown in the drawing, and each of the formwork members 31 to 34 is reinforced by a rib-shaped steel plate. The two sets of holes 35, 35 and 36, 36 provided in the formwork member 31 are for inserting the ends of the hanging fittings in a later step. In the present embodiment, the side mold 3 made of a steel plate is used. However, the present invention is not limited to this, and a mold formed by using a plywood or the like may be used. After the installation of the side mold 3, the mat-shaped member 4 is laid on the inside of the side mold 3 and on the surface of the base A. The mat-shaped mold 4 is a mold for forming a concrete-finished finished surface.
[0018]
FIG. 3 shows a cross-section of the mat-shaped member 4. The mat-shaped member 4 is a mat-shaped member formed by processing a steel plate and integrally forming the ridges 41 corresponding to the grooves 21 as joints. A large number of cone-shaped members 5 corresponding to the concave portions 25 in FIG. 1 are firmly attached to the surface 4A of the shaped member 4 by appropriate means such as bonding and screwing. The cone section 5 is also a section for forming a bare concrete finish. In FIG. 3, only the ridge 41 is shown, but the other ridges 42 to 44 are integrally formed on the mat-shaped member 4 in the same manner as the ridge 41.
[0019]
Here, the material of the cone-shaped member 5 is plastic, but the material of the cone-shaped member 5 is not limited to this, and steel, wood, rubber, GRC, a heat insulating material, or the like can be used. On the other hand, as a matter of course, a plywood, a rubber sheet, a plastic plate, a GRC plate, or the like may be used for the mat-shaped member 4 instead of the steel plate. However, in any case of using any material, the ridges 41 to 44 are formed integrally with the plate material. When a rubber sheet or a plastic plate is used, it is only necessary to form grooves corresponding to the ridges in a molding die for molding the rubber sheet or the plastic plate, so that the production is simple. In the case of plywood or plate material, it is sufficient to cut out the ridges, but it is also possible to adopt a configuration in which a bar-shaped wood or the like having a size and shape corresponding to the ridges is fixed to the plywood in advance by means of bonding, nailing, etc. Good.
[0020]
FIG. 4 shows a modification of the mat-shaped mold member 4 shown in FIG. In the mat-shaped member 4 ′ shown in FIG. 4, not only the ridge 41 but also the cone member 5 ′ are formed integrally with the steel plate. According to this configuration, the step of attaching the cone-shaped member 5 after the mat-shaped member 4 is laid is unnecessary, and the ridges 41 to 44 and the plurality of cone-shaped members 5 'are formed by simply laying the mat-shaped member 4'. Since it can be installed in the frame 3, it is useful to reduce the number of steps. That is, the mat-shaped mold 4 'alone can serve as a mold for forming the joint trace pattern of the concrete panel and the wooden concrete pattern.
[0021]
Next, the next step will be described with reference to FIG. After the laying of the mat-shaped members 4 and the attachment of the cone-shaped members 5 are completed, a plurality of reinforcing bars 6 are arranged inside the side surface forming frame 3 at predetermined intervals in parallel with the forming member 31, and then the plurality of reinforcing bars 6 are arranged. The steel bars 7 are arranged in parallel with the form member 32 at a predetermined interval. At this time, in order to separate each reinforcing bar 6 and 7 from the surface of the base A by a predetermined distance, the respective reinforcing bars 6 and the surface of the base A at both ends and the center of each of the plurality of reinforcing bars 6. Arrange the bars across the block.
[0022]
After the reinforcing work is completed, the respective ends 81, 81 of the U-shaped suspension fitting 8 made of round steel or the like are inserted into a pair of holes 35, 35 provided at the ends of the formwork member 31 of the side formwork 3. It is inserted and fixed by welding to an appropriate position of any one of the reinforcing bars 6 arranged in the side surface forming frame 3. Similarly, the respective ends 91, 91 of the U-shaped hanging fitting 9 are inserted into a pair of holes 36, 36 provided at the other end of the form member 31 and welded to the reinforcing bar 6. Fix it. Then, as attachment members for attaching the completed PC board to a beam or the like, the two steel plates 10, 11 are located near the two suspension fittings 8, 9, respectively, and the respective surfaces 10A, 11A are viewed from the side mold 3. Attach to the height using leg members.
[0023]
In the above description, the reinforcing bars are arranged to reinforce the mechanical strength of the PC board 1. However, this reinforcing step is not always necessary, and can be omitted if there is no problem in strength. In addition, this type of reinforcement can be performed by a known means such as embedding a fiber sheet such as a mesh bar, an expanded metal band, or a glass fiber in place of the reinforcing bar arrangement.
[0024]
Next step will be described with reference to FIG. After the reinforcing bars and the attachment of the hanging metal fittings 8 and 9 are completed, concrete is poured into the side formwork 3 to level the placing surface 2B. After the concrete of the concrete body 2 reaches a predetermined strength after being sufficiently cured, the side mold 3 is removed from the concrete body 2 and removed. This release can be carried out by hanging the hooks 8 and 9 with hooks of a crane (not shown) or the like. Thereby, the PC board 1 shown in FIG. 1 is obtained.
[0025]
Since the PC board 1 is manufactured as described above, grooves 21 to 24 serving as decorative joints are respectively formed on the outer surface 2A of the concrete body 2 by the ridges 41 to 44, and the plurality of cone-shaped members 5 are formed. Thus, a plurality of concave portions 25 as the traces are formed, and the outer surface 2A of the PC board 1 can be made to look like a concrete-exposed tone.
[0026]
In the above-described embodiment, the case where the surface is a PC board having a bare concrete finish surface is described, but the present invention is not limited to the PC board, and a mortar board, a ceramic board, an inorganic plate-shaped such as a GRC board, or the like. Also in this case, the present invention can be applied in the same manner to produce a plate material having a surface with a finished surface.
[0027]
Further, in the above-described embodiment, the unfinished finished surface forms the four grooves 21 to 24 simulating a joint trace as cosmetic joints, and also forms a plurality of dent portions 25 simulating a wooden cone trace. This gives a bare concrete finish, but the present invention is not limited to this. An exposed finish surface is any surface finish that resembles an exposed finish surface.For example, an exposed finish that mimics a joint trace or a wooden concrete trace is also used here. Configure the surface. Thus, the exposed finished surface need not exactly match the actual exposed finished surface.
[0028]
Here, cone-shaped members 5, 5 'were used as the mold used to imitate the traces of the wooden concrete, but the size and shape of the cones do not necessarily match those of the wooden concrete actually used. You may. For example, even a mold that differs in size and shape from an actual wooden cone can be used as a cone mold for forming an exposed finished surface.
[0029]
FIG. 7 is a process chart for explaining another embodiment of the present invention. In the embodiment shown in FIG. 7, the outer surface 2A of the concrete main body 2 is cut off to strike the concrete to give a finished surface. First, as shown in FIG. 7A, a concrete body 2 having an outer surface 2A that is flat is prepared. Next, the transfer sheet SH is attached to the outer surface 2A (FIG. 7B). The transfer sheet SH is printed with a positioning mark indicating a processing position for cutting to be performed on the outer surface 2A, for example, a contour line of a processing shape and other appropriate marks, and the transfer surface of the transfer sheet SH is printed. The necessary transfer is performed by closely contacting the outer surface 2A, and the positioning mark is transferred to the outer surface 2A of the concrete body 2 ((C) in FIG. 7).
[0030]
Thereafter, the outer surface 2A of the concrete body 2 is cut using electric tools such as a drill or by spraying fine particles such as water or sand in accordance with the transferred positioning marks to form the grooves 41 and the recesses 25. . As a result, the outer surface 2A of the concrete main body 2 can be made the same as the bare concrete finish as shown in FIG.
[0031]
In the above description, the configuration in which the processing position for cutting on the outer surface 2A is marked using the transfer sheet has been described. However, the marking method is not limited to this, and may be a method using blackout or a template. May be prepared, and an operator may directly mark the outer surface 2A using a template.
[0032]
Further, in the example of FIG. 7, the concrete body 2 was prepared, but instead of this, a mortar plate, a ceramic plate, a GRC plate, etc. were prepared, and the surfaces of these were similarly cut and exposed. It can also be a finished surface.
[0033]
In the embodiment shown in FIG. 7, an example is shown in which the joint trace pattern and the wooden concrete pattern of the concrete panel are formed on a required surface by cutting, but the present invention is not limited to this. May be formed on a required surface by cutting.
[0034]
FIG. 8 is a process chart showing another embodiment of the present invention. In the embodiment shown in FIG. 8, the concrete body 2 is first prepared (FIG. 8A), and then the upper layer 100 having a relatively thin thickness is formed on the outer surface 2A of the concrete body 2. ((B) of FIG. 8). The upper layer 100 is preferably formed by, for example, applying a thin layer of mortar, but the material of the upper layer 100 is not limited to mortar, and an appropriate material such as concrete or GRC can be used. If a material softer than the concrete body 2 is used as the upper layer 100, the cutting becomes easy.
[0035]
Then, as shown in FIG. 8C, by cutting the upper layer 100 to form the grooves 41 and the concave portions 25, the surface 100A of the upper layer 100 can be exposed and finished. In this case, it is clear that the technique described with reference to FIG. 7 can be applied as it is to the cutting method and the marking method.
[0036]
The upper layer 100 may be configured such that a concrete board, a mortar board, a ceramic board, a GRC board, or the like is attached to the outer surface 2A of the concrete body 2 with an adhesive or the like, or may be attached by porting or other appropriate means.
[0037]
FIG. 9 shows a process chart of still another embodiment according to the present invention. Here, first, a concrete body 2 having a flat outer surface 2A is prepared (FIG. 9 (A)), and at the same time, grooves 41 and concave portions 25 are formed in advance, and the surface 110A of the concrete surface 2 is used as a finished finish surface. A thin plate material 110 is prepared (FIG. 9B). Note that the thin plate 110 can be a thin plate made of a suitable material such as a concrete plate, a mortar plate, a ceramic plate, a GRC plate, or the like. Then, the plate material 110 is attached to the outer surface 2A of the concrete main body 2 using an adhesive, thereby exposing the surface of the concrete main body 2 to a finished surface.
[0038]
Here, instead of the concrete body 2, a mortar plate, a GRC plate, or the like can be used. Further, the plate member 110 can be a concrete plate, a mortar plate, a ceramic plate, or the like.
[0039]
In addition, the outer surface 2A of the concrete main body 2 may be exposed and finished to a finished surface by using a transfer sheet to transfer the pattern of the finished surface to the outer surface 2A of the concrete body 2 without using the plate material 110. it can. In this case, durability can be ensured by applying a jade material after the pattern is transferred.
[0040]
In the above-described embodiment, an example has been described in which the outer surface 2A of the concrete main body 2 is exposed and finished to give a finished surface. The present invention can be applied in the same manner and the same effect can be obtained.
[0041]
【The invention's effect】
According to the present invention, without making a detailed construction plan and paying careful attention as in the case of on-site construction, without having to create a junk or a nest in the concrete, it has a good-looking exposed finish Concrete or other plates having a surface can be formed. Furthermore, since it is not necessary to use a plastic cone or the like for holding the formwork, a waterproof mortar treatment for rust prevention treatment is not required, so that the number of steps can be reduced and cost reduction can be expected. Further, if a mat-shaped mold material in which a joint type and a cone type are integrally formed is used, installation of the mold material is simplified, which contributes to reduction of the number of steps, and further cost reduction can be expected.
[0042]
In addition, if the PC board of the present invention having an exposed concrete design surface in which the shape of joints and / or cone holes is formed on the outer surface or the like is used, when constructing a wall portion of an outer peripheral portion of a building, a gate, a fence, etc. In addition, a beautiful bare finish can be easily realized at various parts without concrete placing work on site.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment of a PC board manufactured by a method of the present invention.
FIG. 2 is a partial process chart for explaining one embodiment of a method for manufacturing the PC board shown in FIG.
FIG. 3 is a sectional view of the mat-shaped member shown in FIG. 1;
FIG. 4 is a cross-sectional view of the mat-shaped member shown in FIG.
FIG. 5 is a partial process chart for explaining one embodiment of a method for manufacturing the PC board shown in FIG.
FIG. 6 is a partial process chart for explaining one embodiment of a method of manufacturing the PC board shown in FIG.
FIG. 7 is a process chart for explaining another embodiment of the present invention.
FIG. 8 is a process chart for explaining another embodiment of the present invention.
FIG. 9 is a process chart for explaining still another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 PC board 2 Concrete main body 2A Outer surface 3 Side form 4 Mat-shaped form 5, 5 'Cone form 6, 7 Reinforcing bar 8, 9 Suspension fittings 21-24 Groove 25 Recess 31-34 Formwork 41-44 Protrusion A base 100 upper layer 100A surface SH transfer sheet 110 plate 110A surface

Claims (7)

A method for producing a precast concrete plate having an exposed finish surface,
A process of installing a side formwork on the base,
A step of providing a mold material for forming a finished finish surface on the base in the side mold,
Thereafter, pouring the cast concrete into the side form and solidifying the cast concrete. A method for producing a precast concrete plate having an exposed finish surface,
A process of installing a side formwork on the base,
Laying a mat-shaped mold having a joint type and a cone type on the base in the side mold,
And thereafter, a step of placing concrete in the side surface formwork. A method for producing a precast concrete plate having an exposed finish surface,
A method for producing a precast concrete plate, comprising: producing a precast concrete plate; and exposing the surface of the precast concrete plate to a pattern representing a finished surface by cutting. A method for producing a precast concrete plate having an exposed finish surface,
After manufacturing the precast concrete plate, an upper layer having a flat surface is provided on the surface of the precast concrete plate, and a pattern representing a finished surface is formed by cutting on the surface of the upper layer. The method of manufacturing a precast concrete plate. A method for producing a precast concrete plate having an exposed finish surface,
A method for manufacturing a precast concrete plate, comprising: after manufacturing a precast concrete plate, mounting a plate material having a finish finish on the surface to the surface of the precast concrete plate. A method for producing a precast concrete plate having an exposed finish surface,
A method for producing a precast concrete plate, comprising: producing a precast concrete plate; and transferring the finished pattern to the surface of the precast concrete plate using a transfer sheet. A shape material for forming an exposed finish surface used for manufacturing the precast concrete plate according to claim 1, 2, 3, 4, 5, or 6, wherein the shape material is a joint type or a cone type. A shape member characterized in that it has a mat shape formed integrally.

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