JP2008285867A - Wall-to-wall mold and method of constructing proximity wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall-to-wall mold installed between walls and not deteriorating construction efficiency when a new wall in proximity to an existing wall or new walls in proximity to each other are constructed and a method of constructing a proximity wall using the mold. <P>SOLUTION: When a new wall 4 in proximity to an existing wall 3 is constructed, a wall-to-wall mold A formed of a biodegradable synthetic resin foam body is disposed between the existing wall and the new wall, a general frame B is disposed on one side of the new wall, and concrete is deposited in the mold. After the concrete is cured, an alkaline solution and a bacteria-containing water are sprayed on the wall-to-wall mold left undisturbed. The solution and the water flow into the entire mold through a groove 2, and promote the decomposition of the wall-to-wall mold. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a formwork between walls used when building a building adjacent to the existing building with a slight gap or when building a building adjacent to each other with a slight gap. And a method for constructing a proximity wall.

  For example, when building a new building in a densely built-up area such as a commercial area in an urban area, it is enforced in a place where the distance between the existing building and the distance between the newly built buildings can only be several tens of centimeters. .

  If there is such a slight gap between the existing building and the newly constructed building or between the newly constructed buildings, the existing wall (existing wall) and the existing wall In order to secure the distance between buildings, a polystyrene foam plate is interposed between the newly constructed walls (newly constructed walls) and between the newly constructed walls that are constructed in close proximity to each other. A new wall is constructed by building a wall formwork for a new wall and placing concrete. The expanded polystyrene plate as the inter-wall mold is usually left as it is, but it causes a squeak noise due to the shaking of the building due to the wind after completion.

  Conventionally, in order to prevent the occurrence of the squeaking noise, it is possible to use a mat that has been inflated by applying internal pressure to form a wall-to-wall formwork, and after removing the internal pressure after construction, the mat that is the wall-to-wall formwork can be extracted from the gap between buildings. It is known to be able to do this (see Patent Document 1).

JP-A-3-206261

  However, a thin and light mat is easy to puncture during construction, and a mat that is strong and difficult to puncture becomes heavy, and in any case, there is a problem of deteriorating the workability when constructing a new wall. In addition, it is necessary to use an internal pressure supply means such as a compressor at the time of installation to inflate until an appropriate internal pressure is obtained while performing positioning, which also causes deterioration in workability.

  The present invention has been made in view of the above-described conventional problems, and in constructing a new wall close to an existing wall or a new wall close to each other, the existing wall and the new wall or new It is an object of the present invention to make it possible to easily remove a formwork between walls arranged between walls.

  A first aspect of the present invention is an inter-wall mold that is interposed between an existing wall and a new wall that is constructed in the vicinity of the existing wall, the biodegradable resin foam single-layer foam plate or The present invention provides an inter-wall mold, which is composed of a laminated foam plate of a biodegradable resin foam with an intermediate layer interposed.

In the first aspect of the present invention, a groove having one end opened on the upper surface is formed on the surface of the single-layer foam plate or laminated foam plate on the existing wall side.
One or both sides of a single-layer foamed plate or a laminated foamed plate are covered with an outer frame material,
One side or both sides of the single-layer foam plate or the laminated foam plate are covered with an outer frame material, and a groove having one end opened on the upper surface is formed on the mating surface of the single-layer foam plate or the laminated foam plate and the outer frame material. That
The cell structure of the biodegradable resin foam is open cell,
Is included as a preferred embodiment thereof.

  A second aspect of the present invention is an inter-wall mold interposed between new walls constructed close to each other, and biodegradable with a single-layer foam plate or intermediate layer of a biodegradable resin foam The present invention provides an inter-wall formwork characterized by comprising a laminated foam plate of resin foam.

The second aspect of the present invention is that one side or both sides of a single-layer foamed plate or a laminated foamed plate are covered with an outer frame material,
A groove having one end opened on the upper surface is formed on the mating surface of the single-layer foam plate or the laminated foam plate and the outer frame material,
The cell structure of the biodegradable resin foam is open cell,
Is included as a preferred embodiment thereof.

  In the third aspect of the present invention, the new wall is formed by interposing the inter-wall mold according to the first or second aspect of the present invention between the existing wall and the new wall constructed close to the existing wall. After constructing the wall formwork and placing concrete in the wall formwork, spray an alkaline aqueous solution and / or microorganism-containing water on the wall formwork to promote the decomposition of the biodegradable synthetic fat foam The construction method of the proximity wall characterized by doing is provided.

  The fourth aspect of the present invention is to respectively constitute the wall formwork of both new walls by interposing the inter-wall formwork according to the second of the present invention between the new walls constructed close to each other, After placing concrete in each wall formwork, spraying an alkaline aqueous solution and / or microorganism-containing water on the formwork between walls to promote the decomposition of the biodegradable synthetic fat foam A method for constructing a wall is provided.

  The inter-wall mold of the present invention is a laminate of a biodegradable resin foam intervening a single-layer foam plate or an intermediate layer of a biodegradable resin foam that is a foam similar to a conventionally used polystyrene foam plate Since it uses a foamed plate, it is light and excellent in handleability and can prevent deterioration of workability. In addition, since the biodegradable resin foam constituting all or part of the inter-wall form of the present invention is decomposed even if it is left alone, it is removed without taking time and effort after the construction of a new wall. can do.

  If a groove is provided on the surface of a single-layer foamed plate or a laminated foamed plate, an alkaline aqueous solution and / or microorganism-containing water can be distributed from above and flowed through the groove to promote the entire decomposition. be able to.

  Cover the surface of the single-layer foam board or laminated foam board with an outer frame material, and form the groove on the mating surface of the single-layer foam board or multilayer foam board and outer frame material, so that concrete for building a new wall will be cast. When installed, it is possible to prevent the inflow of concrete into the groove. In addition, if an outer frame material of a biodegradable material (for example, ordinary synthetic resin, synthetic resin foam, wood, metal, etc.) is used, a single-layer foam board or laminated foam using an expensive biodegradable resin foam The board can be made thin and the cost can be reduced.

  Furthermore, when the cell structure of the biodegradable resin foam is open cells, when the alkaline aqueous solution and / or the microorganism-containing water is sprayed, the entire biodegradable resin foam can easily permeate and promote the entire degradation.

  The present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing a first example of an inter-wall mold according to the present invention, and FIG. 2 is a cross-sectional view when a proximity wall is constructed using the inter-wall mold shown in FIG.

  An inter-wall mold A shown in FIG. 1 is composed of a single-layer foamed plate 1 of a biodegradable resin foam. In addition, as shown in FIG. 2, the inter-wall formwork A of this example is interposed between the existing wall 3 and the new wall 4 newly constructed in the vicinity of the existing wall 3. The wall mold C of the new wall 4 is configured together with the general mold B.

  Examples of the biodegradable resin include biodegradable polyester resin, cellulose, and starch. Examples of biodegradable polyester resins include lactone polyester resins, aliphatic carboxylic acid polyester resins, and polylactic acid resins. The single-layer foam board 1 can be obtained by extrusion foam molding, bead foam molding, or the like using these biodegradable resins.

  The cell structure of the biodegradable resin foam is preferably open-celled in order to facilitate penetration when water such as an alkaline aqueous solution and / or microorganism-containing water for promoting the decomposition is distributed.

  The open cells may be constituted by foaming temperature and / or additives at the time of molding, or may be constituted after molding. When open cells are formed during molding, there is a relationship between density and cell size, but the open cell ratio (measured with an air-comparing hydrometer according to ASTM D-2856) causes shrinkage if it is too high. If it is too low, it is difficult to obtain sufficient water permeability, so 30 to 70% is preferable. In addition, as a method for forming open cells after molding, there are a method by hole punching by a plate with a needle or a roller or secondary foaming.

  Grooves 2 are formed in a grid pattern on one side of the single-layer foamed plate 1 that is the inter-wall mold A in this example. Although this groove | channel 2 is not essential structure, alkaline aqueous solution and / or microorganisms containing water for accelerating | stimulating decomposition | disassembly of the single-layer foam board 1 comprised by the biodegradable resin foam are carried out above the formwork A between walls. It is preferable to provide it because it is easy to guide it over a wide range when sprayed. The shape of the groove 2 can be formed only in the vertical direction as long as one end is open on the upper surface of the single-layer foamed plate 1 so as to accept an alkaline aqueous solution and / or microorganism-containing water distributed from above. It can also be formed in an oblique direction or meandering. Moreover, the groove | channel 2 of this example is formed in the surface at the side of the existing wall 3 so that the concrete cast in when constructing the new installation wall 4 may not flow.

  The construction of the proximity wall using the inter-wall mold A in this example is performed by placing the inter-wall mold A in this example with the groove 2 between the existing wall 3 and the new wall 4 facing the existing wall 3 side. It is carried out by interposing, assembling the wall mold C of the new wall 4 together with the general mold B, and placing concrete in the wall mold C. General formwork B refers to a commonly used formwork made of wood, made of ordinary synthetic resin that is not biodegradable, made of metal, or the like.

  Since the present inter-wall mold A is a single-layer foamed plate 1 of a biodegradable resin foam, after assembling the wall mold C together with the general mold B, and placing concrete in the wall mold C Even if it is left alone, it can be decomposed and removed naturally. Further, it is also preferable that a drawing means (not shown) such as a belt is attached to the inter-wall mold A and the end portion is extended to a position where it can be easily drawn. After the single-layer foam board 1 of the inter-wall mold A is disassembled to some extent and loosens in a state sandwiched between the existing wall 3 and the new wall 4, the inter-wall mold A is installed by pulling this pulling means. It can be easily pulled out from between the wall 3 and the new wall 4.

  In order to decompose the single-layer foamed plate 1 at an early stage, after placing concrete in the wall mold C, an alkaline aqueous solution and / or microorganism-containing water for accelerating the decomposition of the biodegradable resin is used. It is preferable to spray from above the frame A. In particular, when the biodegradable resin is a biodegradable polyester resin, it is hydrolyzed with an alkaline aqueous solution (for example, a sodium hydroxide aqueous solution, a potassium hydroxide aqueous solution, etc.) to reduce the molecular weight. In addition, when the enzyme solution is distributed, further degradation by microorganisms is added, and finally, it is decomposed into carbon dioxide and water.

  The surface on the new wall 4 side of the single-layer foamed plate 1 may be a surface in direct contact with the concrete placed in the wall mold C, but in order to prevent adhesion with the concrete, a polyethylene sheet, It is also possible to attach a sheet (not shown) on which the concrete is difficult to adhere. When this sheet is attached, it is preferable that a part of the edge of the sheet is extended outward from the edge of the single-layer foamed plate 1. In this way, when a plurality of single-layer foam plates 1 which are the inter-wall molds A of this example are arranged along the new wall 4, the joints between the adjacent inter-wall molds A are extended. Covering with a part, it can prevent the outflow of Noro.

  FIG. 3 is a perspective view showing a second example of the inter-wall mold according to the present invention.

  The inter-wall mold A in this example includes a single-layer foam plate 1 made of a biodegradable resin foam and an outer frame material 5 that covers one surface of the single-layer foam plate 1.

  The outer frame material 5 can be composed of a biodegradable resin foam as well as a normal biodegradable material such as a synthetic resin, a synthetic resin foam, wood, and metal. Of these, ordinary synthetic resin foam plates, particularly foamed polystyrene plates, are preferred because they are lightweight and inexpensive. Moreover, the outer frame material 5 can also be comprised with a biodegradable resin foam.

  On the mating surface of the single-layer foamed plate 1 and the outer frame member 5, a groove 2 having one end opened on the upper surface is formed. In the case of this example, the groove 2 is formed on the single-layer foam plate 1 side, but depending on the thickness of the outer frame material 5, it may be formed on the outer frame material 5 side, or the single-layer foam plate 1 and the outer frame material. 5 can also be formed.

  The inter-wall mold A in this example is installed with the outer frame material 5 side facing the new wall 4 (see FIG. 2), and the outer frame material 5 allows the single-layer foam plate 1 and the outer frame material 5 to be installed. It is possible to prevent the inflow of concrete into the grooves 2 formed on the mating surfaces. In addition, if the outer frame material 5 is made of a biodegradable material, the costly single-layer foam plate 1 made of a biodegradable resin foam can be made thinner by the thickness of the outer frame material 5. Cost can be reduced.

  When the outer frame material 5 is made of a biodegradable material, the outer frame material 5 may remain attached to the surface of the new wall 4 (see FIG. 2) to be constructed. It is preferable to attach the above-mentioned sheet so that it can be pulled out as the single-layer foam board 1 is disassembled. If the outer frame member 5 is attached with the above-described drawing means (not shown) such as a belt, the drawing becomes easy.

  In the illustrated example, the grooves 2 are formed on both surfaces of the single-layer foamed plate 1, but either one can be omitted or both can be omitted. In particular, when the groove 2 formed on the side opposite to the side on which the outer frame material 5 is attached is omitted, it may be used in the mode shown in FIG. 6 to be described later, that is, in the mode of being interposed between the two new walls 4 and 4. it can. However, it is preferable to form the grooves 2 on both sides because decomposition can be promoted more effectively by spreading the alkaline aqueous solution and / or the microorganism-containing water.

  FIG. 4 is a perspective view showing a third example of the inter-wall mold according to the present invention.

  The inter-wall mold A of this example is provided with a single-layer foamed plate 1 made of a biodegradable resin foam and an outer frame material 5 that covers one surface of the single-layer foamed plate 1. The thickness of the outer frame material 5 is larger than that of the plate 1. When the outer frame material 5 is made of a biodegradable material and the thickness of the outer frame material 5 is increased, the thickness of the high-cost single-layer foamed plate 1 can be significantly reduced, which is much higher than the example of FIG. Cost can be reduced.

  Further, when the thickness of the outer frame member 5 is increased, it becomes easy to form the groove 2 on the outer frame member 5 side at the mating surface of the single-layer foamed plate 1 and the outer frame member 5 as shown in the figure. In particular, when the thick outer frame member 5 is used as in this example, a lightweight polystyrene foam plate is optimal as the outer frame member 5.

  In the case of the outer frame material 5 made of a hardly biodegradable material, the outer frame material 5 of this example also adheres to the surface of the new wall 4 to be constructed (see FIG. 2) in the same manner as the outer frame material 5 of FIG. You may let them. However, the above-mentioned sheet is attached to the surface of the outer frame member 5 so that the single-layer foamed plate 1 is disassembled so that it can be pulled out after being loosened between the existing wall 3 and the new wall 4. It is preferable to keep it. It is also preferable to attach a drawing means (not shown) such as a belt to the outer frame material 5.

  In the illustrated example, in addition to the groove 2 formed on the outer frame material 5 side of the mating surface of the single-layer foam plate 1 and the outer frame material 5, the side opposite to the attachment side of the outer frame material 5 is provided. Although the groove | channel 2 is formed also in the surface of the single layer foam board 1, either one can be abbreviate | omitted or both can also be abbreviate | omitted. In particular, when the groove 2 formed on the side opposite to the side on which the outer frame material 5 is attached is omitted, it may be used in the mode shown in FIG. 6 to be described later, that is, in the mode of being interposed between the two new walls 4 and 4. it can. However, it is preferable that the surface having the grooves 2 is formed because decomposition can be promoted more effectively by spreading the alkaline aqueous solution and / or the microorganism-containing water.

  FIG. 5 is a perspective view showing a fourth example of an inter-wall mold according to the present invention, and FIG. 6 is a cross-sectional view when constructing a proximity wall using the inter-wall mold shown in FIG.

  The inter-wall mold A shown in FIG. 5 includes a single-layer foamed plate 1 made of a biodegradable resin foam and outer frame materials 5 and 5 that cover both surfaces thereof. Further, the outer frame members 5 and 5 are thicker than the single-layer foam plate 1 in the same manner as in the example of FIG. Grooves 2 and 2 are formed on the frame members 5 and 5 side. The materials of the outer frame materials 5 and 5 may be the same or different.

  In the inter-wall mold A of this example, if at least one outer frame material 5 or 5 is made of a biodegradable material, the thickness of the costly single-layer foamed plate 1 can be reduced, Cost can be reduced.

  As shown in FIG. 6, the inter-wall formwork A of this example is interposed between the new walls 4 and 4 newly constructed close to each other, and both the new walls 4 and 4 together with the general formwork B and B. Wall formwork C, C can be configured. That is, the construction of the proximity wall using the inter-wall mold A of the present example is performed by interposing the inter-wall mold A of the present example between the new walls 4 and 4 newly constructed in close proximity to each other. This is performed by assembling the wall molds C and C of the new walls 4 and 4 together with the frames B and B, and placing concrete in the wall molds C and C.

  After placing the concrete, it may be left to wait for the decomposition of the single-layer foamed plate 1, but it is preferable to promote decomposition by spraying an alkaline aqueous solution and / or microorganism-containing water from above the inter-wall mold A. Is as described above. Also, the outer frame members 5 and 5 of this example can be made of a biodegradable material in the same manner as the outer frame member 5 described with reference to FIGS. It may be left attached to. However, when it is made of a biodegradable material, the above-mentioned sheet is attached to the surface of the outer frame materials 5 and 5, and the single-layer foam plate 1 is decomposed and sandwiched between the existing wall 3 and the new wall 4. It is preferable that the pulled-out state be pulled out after being loosened. It is also preferable to attach drawing means (not shown) such as a belt to the outer frame members 5 and 5.

  FIG. 7 is a perspective view showing a fifth example of the inter-wall mold according to the present invention.

  The inter-wall mold A in this example is made of outer frame materials 5 and 5 that are thinner than the single-layer foam plate 1 made of biodegradable resin foam, and the single-layer foam plate 1 and the outer frame materials 5 and 5 are combined. The surface is the same as the example of FIG. 5 except that the grooves 2 and 2 are formed on the single-layer foamed plate 1 side. 7 and FIG. 5 can be used for both the mode shown in FIG. 6 and the usage mode shown in FIG.

  FIG. 8 is a perspective view showing a sixth example of the inter-wall mold according to the present invention.

  The inter-wall mold A in FIG. 8 is composed of a laminated foam plate 8 in which an intermediate layer 7 is interposed between biodegradable resin foam layers 6 and 6 constituting both surfaces. The intermediate layer 7 is made of the above-described biodegradable material or biodegradable resin foam. By interposing the intermediate layer 7, it becomes easy to adjust the overall strength. 1, 3, 4, 5, and 7 can be used as a configuration in which the single-layer foamed plate 1 is replaced with the laminated foamed plate 8 of this example.

  FIG. 9 is a perspective view showing a seventh example of a mold between walls according to the present invention.

  9 is provided with outer frame members 5 and 5 on both surfaces of the laminated foam plate 8 constituting the inter-wall mold A shown in FIG. 8, and the laminated foam plate 8 and the outer frame material are provided. Grooves 2 are formed on the laminated foam plate 8 side on the 5, 5 mating surfaces. In other words, the single-layer foamed plate 1 in the example shown in FIG.

  8 and 9, the inner layer material 6 is a single layer, but it may be formed of two or more layers.

  FIG. 10 is a perspective view showing an eighth example of an inter-wall mold according to the present invention.

  The inter-wall mold A of this example is composed of a single-layer foamed plate 1 made of a biodegradable resin foam, and is provided with a hole 9 having one end opened on the upper surface. This hole 9 guides the alkaline aqueous solution and / or the microorganism-containing water in the same manner as the above-described groove 2 (see FIGS. 1 to 9). In addition, this hole 9 can be applied. The guide of the alkaline aqueous solution and / or the microorganism-containing water can be performed by combining the holes 9 and the grooves 2 in communication with each other.

It is a perspective view which shows the 1st example of the formwork between walls concerning this invention. It is a cross-sectional view at the time of proximity | contact wall construction using the formwork between walls shown by FIG. It is a perspective view which shows the 2nd example of the formwork between walls concerning this invention. It is a perspective view which shows the 3rd example of the formwork between walls which concerns on this invention. It is a perspective view which shows the 4th example of the formwork between walls concerning this invention. It is a cross-sectional view at the time of proximity | contact wall construction using the formwork between walls shown by FIG. It is a perspective view which shows the 5th example of the formwork between walls concerning this invention. It is a perspective view which shows the 6th example of the formwork between walls concerning this invention. It is a perspective view which shows the 7th example of the formwork between walls concerning this invention. It is a perspective view which shows the 8th example of the formwork between walls concerning this invention.

Explanation of symbols

A Form between walls B General form C Wall form 1 Single layer foam plate 2 Groove 3 Existing wall 4 New wall 5 Outer frame material 6 Biodegradable resin foam layer 7 Intermediate layer 8 Laminated foam plate 9 Hole

Claims (11)

  Biodegradation with a single-layer foam plate or intermediate layer of biodegradable resin foam interposed between an existing wall and a new wall constructed close to the existing wall It is comprised with the laminated foam board of a porous resin foam, The inter-wall formwork characterized by the above-mentioned.   The inter-wall mold according to claim 1, wherein a groove having one end opened on the upper surface is formed on the surface of the single-layer foam plate or the laminated foam plate on the existing wall side.   The inter-wall mold according to claim 1 or 2, wherein one or both surfaces of the single-layer foamed plate or the laminated foamed plate are covered with an outer frame material.   One side or both sides of the single-layer foam plate or the laminated foam plate are covered with an outer frame material, and a groove having one end opened on the upper surface is formed on the mating surface of the single-layer foam plate or the laminated foam plate and the outer frame material. The inter-wall formwork according to claim 1, wherein:   The inter-wall mold according to any one of claims 1 to 4, wherein the cell structure of the biodegradable resin foam is open cells.   A wall-to-wall mold interposed between new walls constructed close to each other, and a biodegradable resin foam single-layer foam board or an intermediate layer biodegradable resin foam laminated foam board An inter-wall formwork characterized by comprising   The inter-wall mold according to claim 6, wherein one or both surfaces of the single-layer foamed plate or the laminated foamed plate are covered with an outer frame material.   The inter-wall mold according to claim 7, wherein a groove having one end opened on the upper surface is formed on a mating surface of the single-layer foam plate or the laminated foam plate and the outer frame material.   The inter-wall mold according to any one of claims 6 to 8, wherein the cell structure of the biodegradable resin foam is open cells.   A wall formwork of the new wall is configured by interposing the inter-wall formwork according to any one of claims 1 to 9 between the existing wall and a new wall constructed close to the existing wall, A proximity wall characterized in that after placing concrete in a wall formwork, spraying an alkaline aqueous solution and / or microorganism-containing water on the formwork between walls to promote the decomposition of the biodegradable synthetic foam. How to build.   The wall molds of both new walls are respectively constructed by interposing the inter-wall molds according to any one of claims 6 to 9 between the new walls constructed close to each other, A method of constructing a proximity wall characterized in that after placing concrete on a wall, an alkaline aqueous solution and / or microorganism-containing water is sprayed on a mold between walls to promote the decomposition of the biodegradable synthetic fat foam.

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