JP2012219480A - As-cast concrete finish construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for constructing the front faces of wall, floor, ceiling, roof, or the like of a steel-frame or wooden building, with an as-cast concrete texture created as if by using formwork, without the use of formwork.SOLUTION: In finishing the surface of a building or a structure with an as-cast concrete texture, a masking member 3 is fixed to at least the edge of a first partitioned plane part 1A formed in advance. Subsequently, a repair material is applied to a neighboring substrate surface 4, and the masking member 3 is then removed in advance of curing a plane forming member so as to form a second partitioned plane part 1B. Consequently, an unevenness 10 is formed to create the as-cast concrete texture at the boundary part between the first partitioned plane part 1A and the second partitioned plane part 1B.

Description

  The present invention relates to a construction method in which the surface of a building or structure such as a wall, floor, ceiling, or roof has a concrete-like finish.

In recent years, there has been an increase in demand for a concrete-free building or structure (hereinafter simply referred to as “building”) that has a modern and stylish feeling, regardless of whether it is a new construction or a renovation. In the case of SRC (steel-framed reinforced concrete) or RC (steel reinforced concrete) buildings, this concrete exposed surface is basically exposed by removing the formwork after casting the concrete into the formwork. Obtainable.
In this way, in SRC and RC buildings, the exposed surface can be formed by a normal construction method. However, in the case of a steel or wooden building, it is specially designed to have an appearance similar to that of concrete. We are constructing.

  For example, on a base material that has fine irregularities resembling a grain of wood and cell holes on the surface, and a finishing material with a flexible mortar or aggregate coloring in concrete color is used as a cosmetic material. Immediately after that, it is covered with a release paper having minute unevenness similar to the grain, and after passing through a drying process, it is cut into a desired size, and it is released by applying it to the surface of the building. In this way, a finish surface is obtained (see, for example, Patent Document 1).

  Also, it has a finish plate with a concrete surface and a back reinforcing plate bonded to the back side of the finish plate. A hole is provided at a predetermined position of the finish plate, and the back reinforcing plate is bonded so as to close the hole. Then, the back reinforcing plate is applied to the base member, and after fixing the back reinforcing plate exposed from the hole to the base member with screws, the hole is filled with decorative mortar to finish like concrete (For example, refer to Patent Document 2).

JP 2001-1482 A JP 2000-291222 A

  However, all of the above technologies are made by attaching wall materials such as cover materials and finishing plates to the construction surface. Even if it is said to be a concrete-free finish, only the color of the surface is concrete-like. It was not possible to bring out a texture as if it was constructed by RC construction.

Further, in the above-described conventional method, there is a problem that since a specific front covering material, a finishing plate, a back reinforcing material, and the like are used, only the material cost is increased, which increases the cost.
In particular, despite the fact that wooden construction is cheaper than SRC construction and RC construction, there is a problem that if the cost increases, there will be no merit of laying concrete in wooden construction. there were.

  The present invention was made in order to solve the above-described problems, and the surface of the wall, floor, ceiling, roof, and the like of a steel structure or a wooden building, although no formwork is used, It is an object of the present invention to provide a construction method in which the texture of the concrete is released like the case of construction using a formwork.

  The present invention makes it easy to finish concrete at the construction site, so even without using a formwork, when using a formwork, there is a difference between the joints of the formwork (panel) that appears on the concrete surface. By making it appear, it is designed to create a feel of concrete.

  That is, the concrete exposed finishing method of the present invention is a method for finishing the surface of a building or structure in a concrete-like manner, and the surface is applied to one section of the construction surface divided into predetermined sections. Applying a material to form a first section screen portion, attaching a masking member on the first section screen portion along at least one edge of the first section screen portion, and A step of forming a second section screen portion by applying a surface material to the construction surface of the section adjacent to the first section screen section along the edge of the first section screen section equipped with the masking member; And a step of removing the masking member mounted on the first section screen portion.

  Here, the surface of a building or a structure is not limited to an inner wall or an outer wall of a steel or wooden building, but includes a floor, a ceiling, a roof, and the like. In addition, the first and second section screen sections are distinguished from the temporal difference in the surface material application that occurs on the surface of the section screen that is adjacent to each other. Is the first, and the section screen section that was constructed after the first section screen section is the second. Furthermore, a masking member means the member which coat | covers and protects the adjacent surface so that it may not protrude from the predetermined division area which a surface material constructs.

  As described above, the masking member is attached to the edge of the first partition surface formed earlier, and the surface material is applied later to the construction base surface adjacent to the first partition screen portion, so that the second partition is applied. By forming the screen portion, a difference in thickness (step) can be generated at the boundary portion between the edge portion of the first section screen and the edge portion of the second section screen along the masking member. Therefore, this difference in thickness (step) exhibits an appearance similar to that of the difference between the joints of the frame plates that appear when the work is performed using a formwork (panel), and brings out a texture of concrete-free finish. Further, when the surface material is applied by the masking member, it can be easily removed together with the masking member as long as it is on the upper surface of the masking member even if the surface material slightly protrudes from a predetermined partition area.

The first section screen portion may be formed by mounting a masking member on an outer edge portion of a predetermined section of the construction surface and applying a repair material on the inner side of the masking member.
That is, the first section screen portion is provided with a masking member on the ground surface from the beginning, and after applying the surface material to the inside of the masking member, the masking member is removed before the applied surface material is cured. You may make it form. Thereby, the edge of the first section screen is formed cleanly, and it becomes easy to apply the surface material for the second section screen section to be applied later, and the sizes of the first and second section screen sections are increased. As a result, the finish of the boundary becomes beautiful.

  At this time, the first and second sections are formed by applying a mortar on the waterproof sheet and further applying a repair material on the mortar after installing the waterproof sheet on the base surface. You may do it. Then, if necessary, the repair material may be patterned with an aqueous paint with a brush or a sponge, and then a water repellent may be applied.

  When the masking member is attached to the base surface on which the surface material is applied to form the first section screen portion, the masking member may have a predetermined thickness. The predetermined thickness is determined so as to be equal to the thickness of the surface material applied to the construction surface. By making the masking member equal to the thickness of the surface material applied to the construction surface, It becomes easy to apply the surface material at the edge of the surface.

  In addition, the concrete release finishing method of the present invention is a staggered form of the first section screen by applying a repair material intermittently to the construction surface divided into grid-like sections, Next, the second section screen portion can be formed by applying a repair member to a section where the repair material is not applied.

  And after formation of each 1st and 2nd section screen part, the upper surface of these section screen parts may be notched circularly-concave, and you may make it form Pcon trace. In addition, this P-con trace refers to a trace in which P-con, which is a member that maintains the interval between the reinforcing bars and the formwork (mold into which concrete is poured), is installed. Thereby, it becomes possible to bring out the texture of the concrete-free finish in addition to the mistake.

  According to the present invention, even in a steel or wooden building that does not use a formwork for construction, the surface of the wall, floor, ceiling, roof, etc., has the same texture as that of the RC or SRC structure. It will be easy to create a concrete-free finish that exudes

It is the schematic which shows the wall surface constructed | assembled by the concrete exposed finishing method which concerns on the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows simply the concrete releasing finishing construction method concerning the 1st Embodiment of this invention. FIG. 3 is a process diagram for sequentially explaining the concrete releasing finish method according to the first embodiment of the present invention. It is process drawing which demonstrates the formation method of the division screen part which concerns on another form of this invention sequentially. It is explanatory drawing which shows the other masking member used for the concrete exposed finishing method which concerns on embodiment of this invention. It is explanatory drawing which shows the formation method of the section screen part which concerns on another embodiment of this invention. It is explanatory drawing which shows the construction method which forms a 1st division screen part collectively efficiently using the formation method of the division screen part which concerns on another embodiment of this invention. It is explanatory drawing which shows the construction method which forms a 2nd division screen part efficiently collectively using the formation method of the division screen part which concerns on another embodiment of this invention. It is the schematic which shows the wall surface constructed by the concrete exposed finishing method shown in FIG.7 and FIG.8. It is explanatory drawing which shows the Pcon trace formed in the wall constructed by the concrete release finishing method of this invention.

Hereinafter, the case where the wall surface of a wooden building is constructed as one form concerning this invention is demonstrated with reference to drawings.
FIG. 1 is a schematic view showing a wall surface constructed by a concrete-like finishing method according to the first embodiment of the present invention. The wall surface shown in FIG. 1 is formed inside the pillars 2 and 2 that are indoors in the building. In this embodiment, the wall between the pillars 2 and 2 is divided into three sections. The difference 10 is formed at the boundary between the sections. Then, by providing the P-con trace 20 on the ward screen, the concrete-released surface 1 was obtained. It should be noted that a resin or metal siding board may be attached to the side not to be subjected to the concrete finishing method.

  The hitting surface 1 can be constructed, for example, as shown in FIG. FIG. 2 is an explanatory view simply showing the concrete releasing finish method according to the present embodiment. First, a repair material as a surface material is applied to a central section portion obtained by dividing the construction surface into three sections, and the first section screen portion 1A is formed first. As this repair material, for example, a mixture of cement and cinnabar sand in a predetermined ratio or a commercially available repair material can be used.

  Then, the masking members 3 are respectively mounted along the edge portions on both sides on the first section screen portion 1A. Thereby, it contacts the adjacent 2nd division screen part 1B among 1A division screen parts 1A.

Next, the second section screen portion 1B is formed by applying a repair material to the construction base surfaces 4 and 4 on both sides adjacent to the first section screen portion 1A. At this time, even if the repair material protrudes from the second section screen portion 1B, the repair material is not applied on the first section screen portion 1A because the masking member 3 is mounted.
Then, by completing the coating of the repair material on the entire second section screen portion 1B, the thickness of the repair material of the first section screen portion 1A previously formed and the repair material of the second section screen portion 1B There is a slight difference in the thickness of the material, and this step becomes a difference 10 when the concrete is exposed.

The construction method of this concrete exposed surface 1 is demonstrated in detail with reference to FIG.
FIG. 3 is a process diagram showing an example of applying a concrete-like finishing method according to the present invention.
First, it is divided into three sections between the columns 2 and 2. Then, the masking members 3 and 3 are vertically mounted on the left and right sides of the section (the center section in the figure) that forms the first section screen portion 1A on the construction base surface 4 (see FIG. 3A). As a method of determining this section, for example, the size of the plate forming the formwork (for example, 1800 mm × 900 mm) may be arbitrarily set as in the case of concrete release.

  Then, a repair material is applied between the two masking members 3, 3, that is, the middle section divided into the three sections, thereby forming the first section screen portion 1 A (FIG. 3A). reference).

Next, the masking members 3 and 3 mounted on the construction base surface 4 are removed before the repair material is cured.
After the repair material is cured and the first section screen portion 1A is formed, the masking members 3 and 3 are mounted along both side edges of the first section screen portion 1A (see FIG. 3C). . Thereby, the masking members 3 and 3 are attached to the boundary edge with the adjacent second section screen portion 1B.

And the 2nd division screen part 1B is formed by apply | coating a repair material to the construction base surface 4 of the both sides adjacent to the 1st division screen part 1A formed previously (refer FIG.3 (D)).
Thereafter, the masking members 3 and 3 attached to both side edges of the first section screen portion 1A are removed, and the repair material constituting the second section screen portion 1B is cured.
As a result, a slight step is formed between the first section screen portion 1A and the second section screen portion 1B. Due to this step, the boundary between the first section screen portion 1A and the second section screen portion 1B is visible. It can be set as the concrete exposed surface 1 in which the difference 10 was formed (refer FIG. 3 (o)).

By the construction method as described above, it is possible to easily make the concrete wall finish on the wall surface of a steel or wooden building using a formwork at the construction site.
In addition, since a special board or the like is not required, material costs and the like can be reduced, and costs can be reduced.

Further, by using the masking member 3, the edge of the first section screen 1A can be formed cleanly. As a result, it becomes easier to apply the repair material for the second section screen portion 1B later, the sizes of the first and second section screen portions 1A, 1B are aligned, and the finish of the boundary portion is finished. It becomes beautiful and can make the difference 10 in order.
In the above example, the masking member 3 is used when forming the first section screen portion 1A. However, the masking member 3 is not essential.

  Moreover, although the example which removes the masking members 3 and 3 mounted on the construction base surface 4 before the repair material is cured has been described, the masking member 3 is left without being removed, and the second section from above is removed. It is also possible to apply a repair material constituting the screen portion 1B.

  Further, when forming the first section screen portion 1A, the masking member 3 attached to the construction base surface 4 is not a tape having a thin and thin strip having an adhesive layer on one side (attached to the construction surface) side. The masking member 13 may be a narrow strip having a predetermined thickness as shown in FIG. Thereby, if the thickness for applying the repair material for forming the first section screen portion 1A is made equal to the thickness of the masking member 13, the repair material can be easily applied. Moreover, the edge of the first section screen portion 1A formed using the masking member 13 can be formed cleanly without collapsing. Therefore, it is easy to apply the repair material that constitutes the second section screen portion 1B thereafter, and it is possible to form a proper mistake.

  Next, an example of applying the concrete-like finishing method according to the present invention will be described with reference to FIG. FIG. 4 is a process diagram for sequentially explaining a method of forming the first and second section screen portions. Each of the first and second section screen portions 1A, 1B can be formed as follows. First, the waterproof sheet 5 is mounted on the construction base surface 4. (See FIG. 4A). As this waterproof sheet 5, it can be set as glass wool, for example.

  Next, a mortar 6 is applied on the waterproof sheet 5 (see FIG. 4A). After the mortar 6 is applied, the repair material 7 is applied thereon. (See FIG. 4 (c)). As the repair material 7, for example, cement can be mixed with dredged sand. Further, after paper is applied on the repair material 7 to make it flat, a pattern is formed with a water-based paint to make the entire surface a concrete color (see FIG. 4D).

Examples of the water-based paint include aqueous resins such as alkyl acrylate copolymer emulsions, styrene-alkyl acrylate copolymer emulsions, polyester resin emulsions, silicone resin emulsions, fluororesin emulsions, and urethane resin emulsions. It is possible to use a paint in which a color pigment is blended with an emulsion paint in which is dispersed in water. Among these, silicon resin emulsions and fluororesin emulsions are particularly preferable because they exhibit effects such as weather resistance, durability, water resistance and the like, and excellent finishing performance.
By using the water-based paint in this way, it is possible to give a concrete-like texture when the water-based paint bleeds moderately.

The application method of the aqueous paint is not particularly limited, and can be performed by means of spray coating, roller coating, brush coating, flow coating, or the like. Moreover, you may make it paint, hitting the surface with the sponge etc. which included the aqueous paint so that it might become the texture of concrete.
Moreover, you may make it use the water-colored paint of predetermined colors, such as blue and yellow, and may mix | blend colored powder and it may be made to give desired hue.

  And it can be set as the concrete exposed surface 1 by apply | coating a water repellent to the whole surface. (See FIG. 4 (e)). At this time, the patterning and the application of the water repellent are performed collectively after applying the repair material without distinguishing between the first and second section screen portions 1A and 1B.

  Thereby, a difference in thickness (step) can be generated at the boundary between the edge of the first section screen and the edge of the second section screen along the masking member, and the difference in thickness (step). However, it has the same appearance as the misalignment due to the joints of the frame plates that appear when it is constructed using a formwork (panel), and it gives the texture of concrete-free finish. And by giving patterning to the section screen part, it can be made to have the external appearance resembling a concrete concrete finish.

  Moreover, as shown in FIG. 6, on the construction base surface 4 to which the repair material is applied, a partition area surrounded by the masking members 3.. 3 is formed on the four sides, and the repair material is applied to the inside of the partition area. The first section screen 1A can be formed first. Then, by using a method of forming the section screen portion by surrounding the periphery with the masking member 3, the section screen portions may be formed efficiently and collectively.

  As another method for efficiently and collectively forming the section screen portions, it can be performed as shown in FIGS. 7 and 8, for example. FIG. 7 is an explanatory diagram showing a construction method for forming the first section screen portion using a method for efficiently forming the section screen portion collectively, and FIG. 8 is a method for efficiently forming the section screen portion collectively. It is explanatory drawing which shows the construction method which forms a 2nd division screen part using a.

  First, in order to form the first section screen portion 1A first, on the construction base surface 4 on which the repair material is applied, the rectangular sections surrounded by the masking members 3. Form. Next, the first section screen portion 1A is formed first by applying a repair material to the inside of this section area surrounded by the masking members 3. Thereby, the 1st division screen part 1A is formed in zigzag form (refer FIG. 7).

  Next, the masking members 3 and 3 mounted on the construction base surface 4 are removed before the repair material is cured, and after the repair material is cured and the first section screen portion 1A is formed, the first section screen 1A is formed. Masking members 3 and 3 are attached to both side edges of the section screen portion 1A. And the 2nd division screen part 1B is formed by applying a repair material to the construction base surface 4 of the both sides adjacent to the 1st division screen part 1A formed previously (refer FIG. 8).

  Thereafter, the masking members 3 and 3 attached to both side edges of the first section screen portion 1A are removed, and the difference 10 having a slight step at the boundary portion with the second section screen portion 1B. Can be a concrete-like surface 11 formed in a lattice shape (see FIG. 9).

  Thereby, not only can the partition screen portions be formed efficiently and have a mistake, but also the concrete exposed finish surface having the partition screen portion of any size can be easily formed.

  In the above embodiment, the four sides are surrounded by the masking members 3 .. 3 to form the lattice-shaped Mechiga with the zigzag pattern by the rectangular section screen. However, the present invention is not limited to this. By enclosing with masking members 3 and 3, it is made into a mountain fold-like miscellaneous stacking with a triangle pattern on a triangular screen, or by hexagonal screen by surrounding with hexagonal masking members 3 and 3 It is also possible to arbitrarily make a honeycomb-like mistake with a tortoiseshell pattern.

  In this embodiment, after forming the section screen portion and applying the repair material on the upper surface thereof, the section screen is further cut into a circular concave shape with a drill or the like as shown in FIG. It is recommended to add a P-conc mark (separator mark) that is depressed. As a result, the concrete appearance can be more effectively achieved.

  In addition, although the case where the wall surface of a wooden building is constructed is described in the form of the main ground element, the present invention is not limited to this, and the wall surface of a steel building can be constructed. In addition, the construction site is not limited to the wall surface, and it is possible to construct surfaces such as floors, ceilings and roofs of buildings made of wood or steel. Furthermore, in the present embodiment, only one (inner) side of the wall surface is finished like concrete, but it can also be applied to the other (outer) side.

  DESCRIPTION OF SYMBOLS 1,11 ... Concrete exposed surface, 1A ... 1st section screen part, 1B ... 2nd section screen part, 2 ... Column, 3,13 ... Masking member, 4.・ ・ Construction ground plane, 5 ... Waterproof sheet, 6 ... Mortar, 7 ... Repair material, 8 ... Pattern, 9 ... Water repellent, 10 ... Difference, 20 ... P-con trace.

Claims (9)

A method for finishing the surface of a building or structure with concrete,
Forming a first section screen portion by applying a surface material to one section of the construction surface divided into predetermined sections;
Mounting a masking member on the first section screen portion along at least one edge of the first section screen section;
A step of forming a second section screen portion by applying a surface material to a construction surface of a section adjacent to the first section screen portion along an edge of the first section screen portion on which the masking member is mounted; ,
Removing the masking member attached to the first section screen portion;
A concrete-like finish finishing method characterized by comprising: The first section screen portion is formed by attaching a masking member to an outer edge portion of a predetermined section of the construction surface and applying a repair material on the inner side of the masking member.
The concrete releasing-like finishing method according to claim 1. The masking member has a predetermined thickness,
A concrete-like finishing method according to claim 1 or 2. For the construction surface divided into grid-like sections, the first section screen portion is formed in a staggered manner by applying the repair material intermittently first, and then in the section where the repair material is not applied Forming the second section screen by applying a repair member;
4. Concrete finishing-like finishing method according to any one of claims 1 to 3. In each of the first and second sections, after a waterproof sheet is laid on the construction surface, a mortar is applied on the waterproof sheet to form a construction base surface, and a surface material is further applied on the mortar. Formed by,
The concrete-like finish finishing method according to any one of claims 1 to 4. After forming the first and second section screen portions, a pattern is formed by applying a paint to the concrete surface portion.
7. Concrete finishing-like finishing method according to any one of claims 1 to 6. The above pattern is formed by a water-based paint.
7. Concrete finishing-like finishing method according to claim 6. After forming each of the first and second section screen portions, a P-con trace is formed by notching the upper surface of the section screen portion into a circular concave shape,
The concrete releasing-like finishing method according to any one of claims 1 to 7. The building or structure is steel or wooden.
9. Concrete finishing-like finishing method according to any one of claims 1 to 8.

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