JP2017031756A - Joint filler material and installation method thereof for exterior finishing boards of structure with ventilation layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fill a joint filler material in a joint between exterior finishing boards of exterior heat insulation panels with a ventilation layer for firmly adhering the panels, thus enabling tiles to be installed over the joint.SOLUTION: A joint filler material is to be filled in a joint between exterior heat insulation panels with a ventilation layer that integrates a heat insulation panel with an exterior finishing board with the ventilation layer interposed therebetween, or a joint between exterior finishing boards in a ventilation layer method that forms a ventilation layer between the heat insulation panel and the exterior finishing board. After curing, compressive strength and tensile strength of the joint filler material equals or is greater than compressive strength and tensile strength of the heat insulation panel, and peel strength equals or is greater than material failure strength of the heat insulation panel. Furthermore, the joint filler material does not contain a substance that comes outside after curing. A tile is installed on the exterior finishing board of the exterior heat insulation panel with the ventilation layer using the joint filler material, in the following steps for: filling the joint filler material in the joint between the adjacent exterior finishing boards; applying a tile adhesive on the joint part and the exterior finishing board after the joint filler material has cured; and positioning and bonding the tile thereon, regardless of a position of the joint.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a joint filling material for filling joints between exterior panels in a configuration having a ventilation layer such as an outer heat insulating panel with a ventilation layer or a ventilation layer construction method, and a construction method using the same.

  Patent Document 1 discloses an outer heat insulating composite panel with a ventilation layer integrated with a ventilation layer interposed between a heat insulating panel and an exterior plate (hereinafter, this type of composite panel is referred to as an “outer heat insulation panel with a ventilation layer”). To do. As for the outer heat insulation panel with a ventilation layer, various products are currently distributed depending on the type of the exterior board and the shape of the ventilation layer. When the outer heat insulating panel has the ventilation layer, the back surface of the exterior plate can communicate with the outside air. As a result, there is no stagnation of moisture (such as through-flow moisture from the room or rainwater that has entered the interior) within the layer structure constituting the outer heat insulation panel, and as a result, frost damage due to freezing of the stagnation of moisture is eliminated.

  On the other hand, as a general finishing construction, there is a case where tile construction is performed using an exterior plate as a base. “Tile adhesive organic adhesive (JIS A5557)” (hereinafter referred to as “tile adhesive”) is used as an adhesive for tile construction. This tile adhesive has low moisture permeability, and the tile itself has no moisture permeability. Therefore, in order not to stagnate moisture, it can be said that a structure having an air-permeable layer is indispensable on the housing side of the exterior plate as the tile base. The “configuration having a ventilation layer” is, for example, the above-described outer heat insulating panel with a ventilation layer or a ventilation layer method. Therefore, the exterior board which can be a tile base is, for example, an exterior insulation panel with a ventilation layer or an exterior board which is one of the components in the ventilation layer method.

  FIG. 4 is a horizontal cross-sectional view showing a conventional method for constructing ceramic tiles on the exterior plate of the outer heat insulation panel with a ventilation layer as an example. The outer heat insulating panel 10 with a ventilation layer is fixed to the concrete housing 30. The heat insulating panel 10 with a ventilation layer is a product in which a heat insulating material 12 and an exterior plate 14 are joined and integrated, and a ventilation layer 13 penetrating in the vertical and horizontal directions is formed at an appropriate position between them. Appropriate gaps (joints) are provided at the joints between the adjacent outer heat insulating panels 10 with the ventilation layer. The joint rod 15 is sandwiched between the joints of the heat insulating materials 12 and the hired actual material 16 is handed over. The joints between the exterior plates 14 are filled with a sealing material 111 as a joint filler for waterproofing. The conventional sealing material 111 has elastic flexibility and can absorb the movement of the exterior plate 14 due to seismic force, thermal expansion of the exterior plate, or the like. In other words, the conventional joint filler is a working joint that is premised on movement.

  On the other hand, the tile 24 stuck on the tile adhesive 22 applied to the surface of the exterior material 14 is a rigid body. The tile joint mortar 23 is also a non-flexible solid (however, since only the portion straddling the joint of the exterior material 14 is a working joint, the tile joint mortar 23 is a tile joint sealing material 25). Accordingly, a non-woven fabric-attached butyl rubber tape 121 (hereinafter referred to as “butyl tape”) having a predetermined width is provided as a buffer material that physically insulates the tile 24 and the tile joint mortar 23 from the movement of the sealing material 111 of the exterior plate 14. It is done. The butyl tape 121 is attached to the surface of the sealing material 111 along the joints of the exterior plate 14. The butyl tape 121 also serves as a chemical insulation that prevents the plasticizer contained in the sealant 111 from penetrating the tile adhesive 22. When the plasticizer penetrates, it causes discoloration and strength reduction of the tile adhesive 22. Thus, the butyl tape 121 is provided to physically and chemically insulate the tile 24, the tile joint mortar 23, and the tile adhesive 22 from the sealing material 111.

Japanese Patent No. 4009249

  The tile construction performed using butyl tape on the exterior plate having the above-described air-permeable layer has the following problems.

  First, as shown in FIG. 4, there is a problem that the tile 24 cannot be pasted across the joint of the exterior plate 14. As a rule for tile construction, both the part 24a of the left tile 24 and the part 24b of the right tile 24 of the joint (sealing material 111) of the exterior plate 14 are hung on the butyl tape 121. This is because it is stipulated that it must be done. This means that the position of the tile 24 is restricted by the position of the joint of the exterior plate 14, and the degree of construction freedom and work efficiency are greatly reduced.

  Also, the butyl tape itself has problems that workability is poor and adhesion strength and long-term durability are low. These problems are particularly remarkable at low temperatures such as in winter.

  The present invention has been made in view of the above problems in tile construction performed using a butyl tape on an exterior plate having a structure having a ventilation layer. An object of the present invention is a joint filling material for an exterior plate having a ventilation layer, which does not transmit unexpected movement to a rigid tile and does not penetrate into a tile adhesive without using butyl tape. It is to avoid. Moreover, the objective of this invention is providing the construction method which is not restrained by the position of the joint of an exterior material by using such a joint filling material.

In order to achieve the above object, the present invention provides the following configurations.
According to a first aspect of the present invention, in the outer heat insulating panel with a ventilation layer in which the heat insulating panel and the outer plate are integrated with a ventilation layer interposed therebetween, the ventilation plates provided with a ventilation layer between each other or between the heat insulation panel and the exterior plate are provided. A joint filling material for filling the joints of the exterior panels in the layer construction method,
It is characterized in that it does not contain a substance that becomes rigid and goes outside after curing.
In this aspect, it is preferable that the compressive strength and tensile strength after curing of the joint filler are not less than the compressive strength and tensile strength of the exterior plate and the peel strength is not less than the material breaking strength of the exterior plate. .
In this embodiment, it is preferable that the joint filler is an epoxy adhesive.

A second aspect of the present invention is a method for constructing a tile on an exterior plate of an outer heat insulation panel with a ventilation layer, in which the joint filler is used and the heat insulation panel and the exterior plate are integrated with a ventilation layer interposed. Because
Filling the joints between the adjacent exterior panels with the joint filler,
After the joint filling material is cured, a tile adhesive is applied to the joint portion between the exterior plates and the exterior plate, and the tile is positioned and pasted on the joint plate regardless of the position of the joints. Features.

A third aspect of the present invention is a method for constructing a tile on the exterior plate after performing a ventilation layer construction method using the joint filling material described above and providing a ventilation layer between the heat insulation panel and the exterior plate,
Filling the joints between the adjacent exterior panels with the joint filler,
After the joint filling material is cured, a tile adhesive is applied to the joint portion between the exterior plates and the exterior plate, and the tile is positioned and pasted on the joint plate regardless of the position of the joints. Features.

According to a fourth aspect of the present invention, the exterior plate or the heat insulation panel and the exterior in the outer heat insulation panel with a ventilation layer in which the joint filling material is used and the heat insulation panel and the exterior plate are integrated with a ventilation layer interposed therebetween. A method of painting the exterior plate in a ventilation layer method for providing a ventilation layer between plates,
Filling the joints between the adjacent exterior panels with the joint filler,
After the joint filling material is hardened, it is coated on the joint portion between the exterior plates and the exterior plate.

  The joint filling material of the exterior board in the configuration having the air-permeable layer according to the present invention becomes a rigid body after curing, and more preferably, the compression strength and tensile strength after curing are equal to or higher than the compression strength and tensile strength of the exterior board and the peel strength is Since it is higher than the material breaking strength of the exterior plate, the joint filling material does not move and has strong adhesion strength even due to seismic force or thermal expansion of the exterior plate. That is, the joint filler of the present invention is a non-working joint that is premised on not moving. Since the joint filling material is stationary, no motion is transmitted to the tiles above it and the tile joint mortar. Thereby, the use of the conventional butyl tape which played the role of physical insulation can be excluded.

  Further, the joint filler according to the present invention does not include a substance that goes out after curing. That is, the chemical reactivity disappears after construction, and the phenomenon that the plasticizer and the like are eluted does not occur. Therefore, an undesirable substance does not penetrate into the tile adhesive. Thereby, the use of the butyl tape which was playing the role of the chemical insulation conventionally can be excluded.

  By using the joint filling material according to the present invention, the use of the conventional butyl tape can be eliminated, so that the tile position is not restricted by the joint position of the exterior material in the tile construction using the exterior plate as a base. Therefore, the freedom degree and workability of tile construction are improved.

FIG. 1 is a construction example using a joint filling material for an exterior board according to the present invention, (a) is a horizontal sectional view of tile construction performed using an outer heat insulation panel with a ventilation layer, and (b) It is a front view. FIG. 2 is another construction example using the joint filling material of the exterior board according to the present invention, and is a horizontal sectional view of the tile construction performed by using the ventilation layer method. FIG. 3 is a construction example using the joint filling material of the exterior board according to the present invention, and is a horizontal sectional view of the paint finishing construction performed using the outer heat insulating panel with a ventilation layer. FIG. 4 is a horizontal cross-sectional view showing a conventional method for constructing ceramic tiles on the exterior plate of the outer heat insulation panel with a ventilation layer as an example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings showing construction examples to which the present invention is applied. In all drawings including FIG. 4 showing the above-described conventional method, the same or similar components are denoted by the same reference numerals.

  FIG. 1 is a construction example using a joint filling material for an exterior board according to the present invention, (a) is a horizontal sectional view of tile construction performed using an outer heat insulation panel with a ventilation layer, and (b) It is a front view.

  The heat insulating panel 10 with a ventilation layer is a product in which a panel-shaped heat insulating material 12 and an exterior plate 14 are joined and integrated, and a ventilation layer 13 penetrating in the vertical and horizontal directions is formed at an appropriate position between them. The outer heat insulation panel 10 with a ventilation layer is firmly fixed to the concrete frame 30 by simultaneous placing of concrete. As another example, the outer heat insulating panel 10 with the air-permeable layer may be back-tung on the concrete frame 30. For example, a joint rod 15 having a thickness of 10 mm is sandwiched between the joints of the heat insulating materials 12 at the joints between the adjacent heat insulating panels 10 with the adjacent ventilation layers, and the actual material 16 is handed over.

  The joints between the exterior plates 14 are filled with joint fillers 11 different from the conventional sealing material. The joint filling material 11 is filled in the joint using a sealing gun, smoothed with a spatula, and finished with a smooth surface. Details of the joint filler 11 will be described later.

  After the joint filler 11 is cured, the tile adhesive 22 is applied by combing on the joint portions of the exterior plate 14 and the exterior plate 14, and the tile 24 is bonded by pressure bonding. Finally, tile joint mortar 23 is appropriately filled.

  In the present invention, when the tile 24 is pasted, the tile 24 can be positioned and pasted regardless of the position of the joint (joint filling material 11) of the exterior plate 14. That is, even if it is constructed so that only one tile 24 straddles the joint of the exterior plate 14, there is no problem. The present invention eliminates the use of the conventional butyl tape by using the joint filler 11 different from the conventional sealing material, and realizes the tile construction without being restricted by the joint position of the exterior plate 14. .

  Here, the joint filler 11 of the present invention will be described. The joint filler 11 is suitable to have predetermined physical and chemical performances, and to eliminate as much as possible problems that may occur in actual construction.

  The chemical performance required for the joint filler 11 is that the chemical reaction completely stops after curing and does not cause elution of the plasticizer. That is, it should not contain any substances that go out after curing.

  The physical performance required for the joint filler 11 is to become a rigid body after curing. Preferably, the following physical performance is provided. First, the compressive strength and tensile strength of the joint filler 11 after curing are set to be equal to or higher than the compressive strength and tensile strength of the exterior board 14. Secondly, the peel strength of the joint filler 11 is set to be equal to or higher than the material breaking strength of the exterior board 14. That is, the joint filler 11 does not cause interface peeling. Thereby, the joint filling material 11 can function as a non-working joint having rigidity instead of the conventional flexible working joint.

  As a specific example of the joint filler 11, an epoxy adhesive is suitable. The epoxy adhesive has a lighter specific gravity than the cement-based material. Furthermore, since it has an appropriate viscosity, it can be installed in a sealing gun which is a general joint filling tool. In addition, since the epoxy adhesive does not contain moisture, it is less likely to freeze and cause composition destruction even during winter construction.

  In one example of the joint filling material 11 using the epoxy adhesive, the compression test and the tensile test of the joint filling material 11 and the exterior plate 14 were performed. As a result, it was confirmed that the joint filler 11 having a compressive strength and a tensile strength equal to or higher than the compressive strength and tensile strength of the exterior plate 14 can be prepared.

  Moreover, in one Example of the joint filler 11 which has the said performance, it confirmed that predetermined | prescribed performance was satisfied also about the assumed temperature expansion-contraction stress and temperature expansion-contraction amount. Specifically, it is as follows.

  The temperature difference of year-round weather data in Asahikawa City, Hokkaido, where the annual temperature difference is large, was taken into consideration when adding the amount of solar radiation to the normal maximum outdoor temperature and the normal minimum outdoor temperature. In this case, it is assumed that the temperature difference is 53 ° C. on the joint contraction side (the exterior plate is thermally expanded and the joint is crushed), and the temperature difference is 68 ° C. on the joint expansion side (the exterior plate is thermally contracted and the joint is spread). The compressive strength and tensile strength of the joint filler 11 obtained from actual measurements were compared with the expansion and contraction stress calculated from the linear expansion coefficient and elastic modulus, which are known physical property values of the exterior panel 14. As a result, the embodiment of the joint filler 11 had a safety factor of 5.3 times in compression and 1.3 times in tension. Further, it was confirmed that the amount of deformation with respect to the same stretching stress was about 0.2 mm and hardly deformed. In addition, the standard allowable strain of the tile adhesive 22 is 2.0 to 3.0 mm, and the “Outside Insulation Construction Method Design Guidelines (Edited by the Hokkaido Building Technology Association)” used mainly in Hokkaido. A certain amount of allowable deformation of an outer heat insulation construction method member was largely cleared within 1.0 mm, and it was confirmed that there was no problem.

  FIG. 2 is another construction example using the joint filling material of the exterior board according to the present invention, and is a horizontal sectional view of the tile construction performed by using the ventilation layer method.

  The ventilation layer construction method is a construction method in which the ventilation layer 13 is provided by sandwiching the ventilation trunk edge 17 between the individual heat insulation panel 12 and the exterior plate 14. In this example, a hat-type joiner 18 is installed between the ventilator edge 17 and the exterior plate 14 at the joint of the exterior plate 14.

  Thereafter, similarly to the construction example shown in FIG. 1, the joint filling material 11 is filled in the joints between the exterior plates 14, and after the joint filling material 11 is cured, the tile construction is performed.

  The construction method using the joint filling member of the present invention is a construction having a ventilation layer in any case, but there are various construction methods in which the detailed construction of the joint of the exterior plate is different. The main principle of the present invention is to make the joint of the exterior plate in the configuration having the ventilation layer a rigid non-working joint. As long as this principle is followed, various variations other than the above construction examples can be considered.

  FIG. 3 is a construction example using the joint filling material of the exterior board according to the present invention, and is a horizontal sectional view of the paint finishing construction performed using the outer heat insulating panel with a ventilation layer.

  First, similarly to the construction example shown in FIG. 1, the joint filler 11 is filled into joints between the adjacent exterior plates 14 after fixing the outer heat insulating panel 10 with the ventilation layer. Next, after the joint filler is cured, the coating 26 is applied to the joint portion of the exterior plate 14 and the exterior plate 14.

  In the case of a paint finish, the joint portion which is a non-working joint of the present invention is superior in terms of durability compared to a construction method in which a coating material is applied to the joint which is a conventional working joint.

  The joint filling material of the exterior board of the present invention has physical properties such as compressive strength, tensile strength, and peel strength as appropriate depending on the type, material, performance of the exterior board, and the overall configuration of the outer heat insulation method constituting the exterior board. Is set. In actual construction, the joint filling material of the present invention is applied to a location where a non-working joint is more advantageous in terms of structure. As a general rule, do not fill joint fillers for earthquake-resistant slits necessary for earthquake-resistant structures, joints around openings or joint corners where loads are concentrated during an earthquake.

DESCRIPTION OF SYMBOLS 10 Outer insulation panel with ventilation layer 11 Joint filling material (of exterior board) 12 Thermal insulation material 13 Ventilation layer 14 Exterior board 15 Joint rod 16 Employed actual material 17 Venting trunk edge 18 Hat type joiner 22 Tile adhesive 23 Tile joint mortar 24 Tile 25 Tile joint sealing 26 Painting 30 Concrete frame 111 Sealing material 121 Butyl tape

Claims (6)

Joints between the exterior panels in the external thermal insulation panel with a ventilation layer in which the thermal insulation panel and the exterior panel are integrated with a ventilation layer interposed therebetween, or joints between the exterior panels in the ventilation layer construction method in which a ventilation layer is provided between the thermal insulation panel and the exterior panel Joint filling material for filling
A joint filling material for an exterior board in a configuration having a ventilation layer, characterized in that it does not contain a substance that becomes rigid after curing and goes out.   The compressive strength and tensile strength after curing of the joint filler are not less than the compressive strength and tensile strength of the exterior plate, and the peel strength is not less than the material breaking strength of the exterior plate. The joint filling material of the exterior board in the structure which has a ventilation layer of description.   The joint filler for an exterior plate according to claim 1 or 2, wherein the joint filler is an epoxy adhesive. A method for constructing a tile on the exterior plate of the outer heat insulation panel with a ventilation layer, wherein the joint material according to any one of claims 1 to 3 is used and the heat insulation panel and the exterior plate are integrated with each other through a ventilation layer. Because
Filling the joints between the adjacent exterior panels with the joint filler,
After the joint filling material is cured, a tile adhesive is applied to the joint portion between the exterior plates and the exterior plate, and the tile is positioned and pasted on the joint plate regardless of the position of the joints. A tile construction method on an exterior plate in an outer heat insulation panel with a ventilation layer. A method for constructing a tile on the exterior plate after performing a ventilation layer construction method using the joint filling material according to any one of claims 1 to 3 and providing a ventilation layer between the heat insulation panel and the exterior plate,
Filling the joints between the adjacent exterior panels with the joint filler,
After the joint filling material is cured, a tile adhesive is applied to the joint portion between the exterior plates and the exterior plate, and the tile is positioned and pasted on the joint plate regardless of the position of the joints. The tile construction method on the exterior board in the ventilation layer construction method. The exterior plate or the heat insulation panel and the exterior in the outer heat insulation panel with a ventilation layer obtained by using the joint filling material according to any one of claims 1 to 3 and integrating the heat insulation panel and the exterior plate with a ventilation layer interposed therebetween. A method of painting the exterior plate in a ventilation layer method for providing a ventilation layer between plates,
Filling the joints between the adjacent exterior panels with the joint filler,
A coating finishing method for an exterior board, comprising: coating the joint material between the exterior boards and the exterior board after curing the joint filling material.

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