JP3122800U - External insulation structure using calcium silicate plate - Google Patents

Abstract

An outer heat insulating structure having good fire resistance, non-flammability, heat insulating properties and durability is provided.
An outer heat insulating structure formed on an outdoor wall surface of a building frame made of reinforced concrete, steel reinforced concrete, or masonry,
After the calcium silicate plate is provided on the outdoor wall surface of the building frame with or without an air layer, a net is laid on the entire outdoor surface of the calcium silicate plate, and the silica is further applied from above the net. After driving the anchor through the calcium plate to reach the building frame, fix the mesh and the calcium silicate plate, fix the calcium silicate plate and the building frame, and then form the mortar base layer on the net An outer heat insulating structure formed by providing an exterior material via a mortar adhesive on the mortar base layer.
[Selection] Figure 1

Description

  The present invention relates to an outer heat insulating structure using a calcium silicate plate as a heat insulating material.

  Conventionally, as one of the construction methods, there is an external heat insulation method in which a heat insulating material is provided on the outdoor wall surface of a building frame. The outer heat insulating structure obtained by the outer heat insulating method has a feature that the heat insulating property of the building frame is excellent and the temperature fluctuation in the room is small throughout the year because the heat insulating material is provided on the outside wall surface of the building frame.

  That is, the outer heat insulating structure has an effect of preventing the occurrence of internal dew condensation, which is a problem in the inner heat insulating structure, suppressing the generation of mold, and having high cooling / heating efficiency. In addition, since the building frame is not directly affected by temperature fluctuations in the outside air, there is no influence on the building frame due to heat or frost damage, and the life of the building frame can be greatly extended.

  In the outside heat insulation method, as the heat insulating material provided on the outdoor wall of the building frame, organic heat insulating materials such as rigid urethane foam, expanded polystyrene, phenol foam, or fibrous heat insulating materials such as rock wool and glass wool are generally used. It is done.

  However, there is a problem that organic heat insulating materials are likely to cause deterioration of heat insulating performance due to deterioration, are not fire resistant, and are liable to generate toxic gas in the event of a fire. Further, since the fibrous heat insulating material is gradually compressed by its own weight, there is a problem that a heat insulating gap is likely to be generated, and further, the heat insulating performance is deteriorated over time because it is weak against condensation and water.

  Therefore, it is desired to develop an outer heat insulating structure that can maintain good heat insulating performance for a long period of time and has excellent fire resistance. In addition, the development of an external heat insulation method that can easily construct such an external heat insulation structure is also desired.

  The main object of the present invention is to provide an outer heat insulating structure having good fire resistance, non-flammability, heat insulating properties and durability.

  As a result of earnest research on the outer heat insulating structure and its construction method, the present inventor found that the outer heat insulating structure suitably formed by a specific outer heat insulating method can achieve the above-mentioned purpose, and has completed the present invention. .

  That is, the present invention relates to the following outer heat insulating method and outer heat insulating structure.

≪Outer insulation method≫
1. An external heat insulation method characterized in that a calcium silicate plate is provided on an outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete, or masonry with or without an air layer.

  2. Item 2. The outer heat insulation method according to Item 1, wherein the calcium silicate plate has a bulk specific gravity of 0.05 to 1 and a thickness of 5 to 300 mm.

3. (Wet method (I))
3. The outer heat insulation method according to the above item 1 or 2, wherein the calcium silicate plate is provided on the outdoor wall surface of the building frame with or without an air layer, and then the entire outdoor surface of the calcium silicate plate. A net is laid on the top of the net, and the anchor is driven to reach the building frame through the calcium silicate plate from above the net, fixing the net and the calcium silicate plate, and fixing the calcium silicate plate and the building frame. Then, after forming a mortar base layer from above the net-like material, a wet outer heat insulation method in which an exterior material is provided on the mortar base layer via a mortar adhesive.

  4). In the wet outer heat insulation method according to the above item 3, instead of providing an exterior material via a mortar adhesive on the mortar base layer, a mortar base adjustment layer is further formed on the mortar base layer, A method of exterior finishing on the base adjustment layer.

5. (Wet method (II))
The outer heat insulation method according to item 1 or 2, wherein a net is preliminarily laid on the entire surface of one side of the calcium silicate plate and a mortar base layer is further formed on the net. A calcium silicate plate on which the mortar base layer is formed is provided on the outdoor wall surface with or without an air layer so that the mortar base layer is on the outdoor side, and then the calcium silicate plate is placed on the mortar base layer. The anchor is driven through to reach the building frame, fixing the mesh and calcium silicate plate, fixing the calcium silicate plate and building frame, and further covering the mortar base layer with mortar adhesive Wet outer insulation method of construction.

  6). 6. In the wet external heat insulation method according to the above item 5, instead of providing an exterior material via a mortar base material on the mortar base layer, a mortar base adjustment layer is further formed on the mortar base layer, A method of exterior finishing on the base adjustment layer.

7). (Wet method (III))
3. The outer heat insulation method according to the above item 1 or 2, wherein a net is preliminarily laid on the entire surface of one side of the calcium silicate plate, and a mortar base layer is formed on the net, and then the mortar base layer A calcium silicate plate with an exterior material provided with an exterior material via a mortar adhesive on the part other than the part where the anchor is to be driven later is placed on the outdoor wall surface of the building frame via an air layer or interposed First, the calcium silicate plate with the exterior material is provided so that the exterior material becomes the outdoor side, and then the calcium silicate plate is penetrated from above the mortar base layer without the exterior material so as to reach the building frame The anchor is driven in, the net and the calcium silicate plate are fixed, and the calcium silicate plate and the building frame are fixed. Finally, an exterior material is provided at the anchor driving portion via a mortar adhesive. Wet external insulation construction method.

8). (Wet method (IV))
3. The external heat insulation method according to item 1 or 2, wherein the wet external heat insulation method has the following steps;
(1) A step of laying a net on the entire surface of one side of the calcium silicate plate in advance, and further forming a mortar base layer from above the net;
(2) a step of driving the anchor through the calcium silicate plate from above the mortar base layer, and fixing the net and the calcium silicate plate;
(3) A step of providing an exterior material via a mortar-based adhesive on the mortar base layer to obtain an anchor and a calcium silicate plate with the exterior material,
(4) A reinforced concrete layer is arranged on the anchor protruding side of the calcium silicate plate while reinforcing the reinforcing bar while maintaining a space between the calcium silicate plate and then embedding the reinforcing bar and in close contact with the calcium silicate plate. A step of forming a calcium silicate / precast reinforced concrete composite plate by forming, and (5) a step of installing and fixing the composite plate so that the reinforced concrete layer becomes a building frame during construction.

  9. In the outer heat insulation method according to Item 8, instead of performing the work of providing an exterior material on the mortar base layer described in Step (3) via a mortar adhesive in Step (3), Step (5) ) Wet external insulation method performed after).

  10. 3. The outer heat insulation method according to item 1 or 2, wherein the calcium silicate plate is provided on the outdoor side wall of the building frame with or without an air layer, and then the calcium silicate plate is passed through the building frame. The anchor or screw screw is driven in so that the exterior material fixing tool is installed on the outside surface of the calcium silicate plate and the calcium silicate plate is fixed to the building frame, and then the exterior material is attached to the exterior material fixing tool. A dry outer insulation method to fix.

  11. Item 11. The outer heat insulation method according to any one of Items 3 to 10, wherein the anchor is driven without providing spot facings on the calcium silicate plate.

≪Outer insulation structure≫
12 It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
After the calcium silicate plate is provided on the outdoor wall surface of the building frame with or without an air layer, a net is laid on the entire outdoor surface of the calcium silicate plate, and the silica is further applied from above the net. After driving the anchor through the calcium plate to reach the building frame, fix the mesh and the calcium silicate plate, fix the calcium silicate plate and the building frame, and then form the mortar base layer on the net An outer heat insulating structure formed by providing an exterior material via a mortar adhesive on the mortar base layer.

  13. 13. The outer heat insulating structure according to Item 12, wherein a mortar base adjustment layer is further formed on the mortar base layer instead of providing an exterior material via a mortar base adhesive on the mortar base layer. An outer heat insulating structure formed by applying an exterior finish on a layer.

14 It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
Preliminarily laying a net on the entire surface of one side of the calcium silicate plate and further forming a mortar base layer on the net, the air wall on the outdoor wall of the building frame with or without an air layer A calcium silicate plate with a mortar base layer formed is provided so that the mortar base layer is on the outdoor side, and then the anchor is driven so as to penetrate the calcium silicate plate from the top of the mortar base layer and reach the building frame. And an external heat insulating structure formed by fixing the calcium silicate plate and the calcium silicate plate and the building frame, and further providing an exterior material on the mortar base layer via a mortar adhesive.

  15. Item 15. The outer heat insulating structure according to Item 14, wherein a mortar base adjustment layer is further formed on the mortar base layer instead of providing an exterior material via a mortar base adhesive on the mortar base layer. An outer heat insulating structure formed by applying an exterior finish on a layer.

16. An outer heat insulating structure formed on the outside wall surface of the building frame made of reinforced concrete, and formed by going through the following steps:
(1) A step of laying a net on the entire surface of one side of the calcium silicate plate in advance, and further forming a mortar base layer from above the net;
(2) a step of driving the anchor through the calcium silicate plate from above the mortar base layer, and fixing the net and the calcium silicate plate;
(3) A step of providing an exterior material via a mortar-based adhesive on the mortar base layer to obtain an anchor and a calcium silicate plate with the exterior material,
(4) A reinforced concrete layer is arranged on the anchor protruding side of the calcium silicate plate while reinforcing the reinforcing bar while maintaining a space between the calcium silicate plate and then embedding the reinforcing bar and in close contact with the calcium silicate plate. A step of forming a calcium silicate / precast reinforced concrete composite plate by forming, and (5) a step of installing and fixing the composite plate so that the reinforced concrete layer becomes a building frame during construction.

17. It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
After the calcium silicate plate is installed on the outdoor wall of the building frame with or without air layer, the anchor or screw screw is driven through the calcium silicate plate to reach the building frame, and the exterior material fixture An outer heat insulating structure formed by fixing the calcium silicate plate to the building frame, and then fixing the exterior material to the exterior material fixture.

  18. Item 18. The outer heat insulating structure according to any one of Items 12 to 17, wherein the anchor is driven without providing spot facings on the calcium silicate plate.

19. The external heat insulating structure according to any one of Items 12 to 18, wherein the calcium silicate plate has a bulk specific gravity of 0.05 to 1 and a thickness of 5 to 300 mm.

Hereinafter, the present invention will be described in detail.

  The outer heat insulating structure of the present invention is preferably formed by the outer heat insulating method of the present invention.

  The external heat insulation method of the present invention is characterized in that a calcium silicate plate is provided on the outdoor wall surface of a building frame made of reinforced concrete, steel reinforced concrete or masonry with or without an air layer.

Calcium silicate board calcium silicate board, refractory material, is preferred which can sufficiently exhibit the performance of the non-combustible and heat-insulating material. Such a calcium silicate plate preferably has a bulk specific gravity of 0.05 to 1, more preferably 0.1 to 0.5. A calcium silicate plate having a bulk specific gravity of 0.05 to 1 is particularly preferable because it is excellent in heat insulation and strength.

  Although the thickness of a calcium silicate board is not specifically limited, 5-300 mm is preferable normally and 15-100 mm is more preferable. In particular, a calcium silicate plate having a bulk specific gravity of 0.05 to 1 and a thickness of 5 to 300 mm is preferable because it has good fire resistance, incombustibility, and heat insulation properties, and has little deterioration over time.

  The kind of calcium silicate constituting the calcium silicate plate is not particularly limited, and any of synthetic calcium silicate and natural calcium silicate may be used. Synthetic calcium silicate is obtained by hydrothermal reaction from a lime raw material and a silicic acid raw material, for example, zonotlite, tobermorite, foshygite, gyrolite, α-dicalcium silicate, tricalcium silicate, and hireblandite. , Synthetic silicates such as rosenhanite, trusscotite, riellite, calciochondrodite, kilkoanite, affilite, quasicrystalline calcium silicate (CSHn), synthetic silicates such as zonotlite and tobermorite Examples thereof include wollastonite obtained by heating calcium hydrate. Among the synthetic calcium silicates, zonotlite is particularly preferable because of its excellent fire resistance.

  In the outer heat insulating method of the present invention, the calcium silicate plate is preferably a surface or the whole of which is water repellent. The method of water repellent finish is not particularly limited, and any water repellent finish may be used.

  For example, when the surface is subjected to water repellent finish, the water repellent finish can be achieved by a method of immersing a calcium silicate plate in a water repellent, a method of spraying or applying a water repellent to a calcium silicate plate, and the like. When a calcium silicate plate with a water repellent finish is cut to adjust the dimensions at the construction site, etc., there is no water repellency on the cut surface. What is necessary is just to apply | coat and provide water repellency.

  Further, when the water repellency of the entire calcium silicate plate is desired, for example, as disclosed in JP-A-2-15511, a water repellant is added to the calcium silicate slurry, and the slurry is molded. -The calcium silicate board by which the whole was water-repellent processed by the method of drying should just be produced.

  It does not specifically limit as a water repellent, A well-known water repellent, such as a silane type and a silicone type, can be used conveniently. The water-repellent-processed calcium silicate plate, for example, hardly absorbs moisture in the adhesive even when a mortar adhesive is applied, so that sufficient adhesion strength of the adhesive can be secured. Moreover, since the strength fall of the calcium silicate board based on water absorption can also be suppressed sufficiently, it is preferable.

Building frame The outer heat insulation method of the present invention is applied to a building frame made of reinforced concrete, steel reinforced concrete or masonry. Specifically, the outer heat insulation method of the present invention is mainly applied to the outdoor side wall surfaces of these buildings.

  There is no particular limitation on the building frame made of reinforced concrete, and widely known building frames whose main structure is reinforced concrete are widely applicable. There are no particular limitations on the building frame made of steel-framed reinforced concrete, and widely known building frames that integrate steel frame and reinforced concrete are widely applicable. Moreover, there is no particular limitation on the building frame made of masonry, and widely known building frames formed by stacking small pieces such as stones, bricks, and concrete blocks are widely applicable.

External heat insulation method according to the present invention In the external heat insulation method according to the present invention, the calcium silicate plate is provided on the outside wall surface of the building frame with or without an air layer.

  When the calcium silicate plate is provided on the outdoor side wall of the building frame via an air layer, for example, adhesives are installed in a dumpling form at several locations on the indoor surface of the calcium silicate plate, and the calcium silicate plate Can be provided by pressing and adhering to the outside wall surface of the building frame.

  Moreover, it can also provide by apply | coating an adhesive material to the indoor side surface of a calcium-silicate board in the shape of a several line, and pressing the said adhesive material application surface against the outdoor side wall surface of a building frame. In these methods, the portion where the adhesive is not installed or applied does not adhere to the outdoor wall surface of the building frame and forms an air layer.

  In particular, in the method of installing the adhesive material in a dumpling form, even if the outdoor wall surface of the building frame is uneven, the calcium silicate plate is attached to the building frame by adjusting the thickness of the dumpling adhesive material. It can be provided vertically. That is, the method of installing the adhesive in a dumpling shape is effective when there is unevenness on the outdoor side wall surface of the building frame.

  In these methods, before the adhesive is installed in a dumpling form or applied in a line, the same adhesive is applied in advance to the surface of the calcium silicate plate and / or the building frame where the adhesive contacts. By doing so, the adhesive strength between the calcium silicate plate and the building frame can be further increased.

  When the calcium silicate plate is provided on the outdoor wall of the building frame without an air layer, for example, an adhesive is applied to the entire indoor surface of the calcium silicate plate, and the surface to which the adhesive is applied is applied to the building frame. It can provide by pressing and adhere | attaching on the outdoor side wall surface. This method is effective when there is no unevenness on the outdoor wall surface of the building frame. Moreover, it can also provide by making a calcium-silicate board closely_contact | adhere to the outdoor side wall surface of a building frame, and fixing using an anchor, without using an adhesive material.

  The kind of the above-mentioned adhesive is not particularly limited as long as it can reliably adhere the calcium silicate plate to the building frame. As such an adhesive, polymer cement mortar is particularly suitable.

  After the calcium silicate board is provided on the outside wall of the building frame with or without air layer, usually, exterior material or exterior finish is provided on the outside of the calcium silicate board. Thus, the outer insulation method is completed.

  Examples of the exterior material include tiles, siding materials, metal panels, plastic panels, and stone sticking. Examples of the exterior finish include spraying, painting, and plastering finish.

  More specifically, the external heat insulation method of the present invention can be divided into (1) a wet external heat insulation method and (2) a dry external heat insulation method. Hereinafter, these wet and dry outer heat insulation methods will be described in detail.

(1) Wet external heat insulation method The wet external heat insulation method is a method of laying a net-like material on the outdoor side of a calcium silicate plate and forming a mortar base layer, and then providing an exterior material on the outdoor side of the mortar base layer. It is characterized by finishing.

  As the wet outer heat insulating method of the present invention, for example, the four types of wet methods (I) to (IV) described above are suitable.

  Hereinafter, these wet methods (I) to (IV) will be specifically described.

(I) Method (I) In the method (I), first, a calcium silicate plate is provided on the outdoor wall surface of the building frame with or without an air layer, and then the entire surface of the calcium silicate plate on the outdoor surface is meshed. Laying things. The method for providing the calcium silicate plate on the outdoor wall surface of the building frame with or without an air layer is as described above.

  When the delamination occurs on the calcium silicate plate due to the difference in thermal expansion / shrinkage between the calcium silicate plate and the mortar base layer described later, the reticulate is partly composed of components on the outdoor side of the peeling site. Prevent or suppress peeling.

Such a net-like material is not particularly limited as long as it is excellent in tensile strength and dimensional stability in both longitudinal and lateral directions and can achieve the above-mentioned object. Examples thereof include a net made of alkali-resistant glass fiber having a tensile strength in the vertical and horizontal directions of 12 N / mm ² or more and a thickness of about 0.25 to 0.35 mm, a metal net, and the like. When laying the net-like material, it can be easily laid by temporarily fixing several locations of the net-like material to the calcium silicate plate using staples or the like.

  Next, an anchor is driven so as to penetrate the calcium silicate plate from above the mesh to reach the building frame, fixing the mesh and calcium silicate plate, and fixing the calcium silicate plate and building frame.

  The kind of anchor is not particularly limited, and known anchors can be widely used in the conventional outer heat insulation method. Such an anchor not only has a role of securely fixing the net and the calcium silicate plate, but also has a role of securely fixing the calcium silicate plate and the building frame.

  In addition, when using a washer with a thin head as an anchor bolt, the process of providing the bolt accommodation space called a spot facing on the outdoor side surface of a calcium-silicate board can be made unnecessary. Not providing spot facings is preferable not only in that it can ensure as much as possible the non-flammability, fire resistance, and heat insulation properties of the calcium silicate plate, but also in that the efficiency of the external heat insulation method can be improved.

  However, when spot facings are provided depending on the type of anchor bolt, the surface of the calcium silicate plate should be flattened by filling the recesses of spot facings with polymer cement mortar, cement mortar, etc. after anchoring. Is preferred.

  Next, a mortar base layer is formed on the net. The mortar underlayer is preferably formed so that a net-like material is embedded, and can generally be set as appropriate within a thickness range of about 0.25 to 0.35 mm or more.

  The mortar base layer can be formed using various mortar materials, but it is particularly preferable to form using a polymer cement mortar. Since the polymer cement mortar has excellent elasticity among mortar materials, the expansion and shrinkage of the mortar adhesive due to changes in solar radiation and outside air temperature can be reduced. The mortar adhesive will be described in detail later, but is used, for example, when an exterior material is provided on a mortar base layer.

  That is, when forming a mortar base layer using polymer cement mortar, it is possible to more reliably prevent or suppress delamination of the calcium silicate plate due to the difference in thermal expansion and contraction between the calcium silicate plate and the mortar adhesive. . Moreover, it can also contribute to preventing or suppressing the occurrence of cracks in tile joints when a tile is provided as an exterior material using a mortar adhesive.

  Next, an exterior material is provided on the mortar base layer via a mortar adhesive. As the mortar adhesive, for example, cement mortar, polymer cement mortar, and the like can be suitably used. In particular, when the mortar base layer is formed of polymer cement mortar and polymer cement mortar is used as the mortar-based adhesive, both are familiar and the adhesive force can be improved more reliably. The type of the exterior material is not limited, and examples thereof include the tile, the siding material, the metal panel, the plastic panel, and stone pasting described above.

  In the construction method (I), instead of providing a packaging material on the mortar base layer via a mortar base material, a mortar base adjustment layer is further formed on the mortar base layer, and then on the mortar base adjustment layer. Exterior finish can also be applied.

  Usually, the mortar base adjustment layer is formed to improve the accuracy of exterior finishing such as plastering, painting, and spraying. Such a mortar base adjustment layer can be formed using, for example, cement mortar, polymer cement mortar, or the like. The thickness of the mortar base adjustment layer is not particularly limited, but is usually preferably about 0.5 to 20 mm, more preferably about 1 to 10 mm. Exterior finishes such as spraying, painting, plastering, etc. can be performed according to conventional methods in the field.

In the construction method (II) of (II), prior to the construction of the outer heat insulation construction method, a mesh was laid in advance on the entire surface of one side of the calcium silicate plate, and a mortar base layer was formed on the mesh. Prepare things. The method for laying the net-like material and the method for forming the mortar base layer are as described in the method (I).

  Next, at the time of construction, a calcium silicate plate on which the mortar base layer is formed is provided on the outdoor side wall surface of the building frame with or without an air layer so that the mortar base layer becomes the outdoor side. The method for providing the calcium silicate plate is as described above.

  Next, an anchor is driven so as to penetrate the calcium silicate plate from above the mortar base layer to reach the building frame, fixing the net and the calcium silicate plate, and fixing the calcium silicate plate and the building frame.

  The method of driving the anchor is as described in the method (I). Also in this case, when a washer with a thin head is used as the anchor bolt, it is not necessary to provide a bolt housing space called a spot facing on the outdoor surface of the mortar base layer or the calcium silicate plate.

  Next, an exterior material is provided on the mortar base layer via a mortar adhesive. The method of providing the exterior material is as described in the method (I).

  In the method (II), instead of providing an exterior material on the mortar base layer via a mortar base material, a mortar base preparation layer is further formed on the mortar base layer, and then on the mortar base preparation layer. The exterior finish can also be given. The method for forming the base adjustment layer and the exterior finishing method are as described in the method (I).

(III) Method (III) In the method of (III), prior to the construction of the outer heat insulation method, a mesh is preliminarily laid on the entire surface of one side of the calcium silicate plate, and a mortar base layer is formed on the mesh. Then, a calcium silicate plate with an exterior material provided with an exterior material via a mortar-based adhesive on a portion of the mortar base layer other than a portion where an anchor is driven later is prepared.

  The method for laying the net-like material and the method for forming the mortar base layer are as described in the method (I). The method of providing the exterior material on the mortar base layer via the mortar-based adhesive is basically the same as the method in the method (I), except that the exterior material is not provided in the portion where the anchor is driven later. It is different.

  Next, at the time of construction, the calcium silicate plate with the exterior material is provided on the exterior wall surface of the building frame with or without an air layer so that the exterior material is on the exterior side, and then the exterior material is not provided. The anchor is driven so that the calcium silicate plate penetrates from the top of the mortar base layer to reach the building frame, the net and the calcium silicate plate are fixed, the calcium silicate plate and the building frame are fixed, and finally the anchor driving part In addition, an exterior material is provided through a mortar adhesive.

  The anchor driving method is as described in the above (I) and (II). Finally, when the exterior material is provided at the anchor driving portion, for example, it can be provided by applying a mortar adhesive to the anchor head and the periphery thereof and adhering the exterior material.

(IV) Method (IV) In the method of (IV), pre-cast concrete is applied in advance to the reinforced concrete layer that will be the building frame and the calcium silicate plate that is provided on the outside wall of the building without an air layer before the external insulation method. Prepare by the member assembly method. That is, it is a construction method in which a building frame and a calcium silicate plate are simultaneously installed at the time of construction. Specifically, the following steps are included.
(1) A first step of previously laying a net on the entire surface of one side of the calcium silicate plate and further forming a mortar base layer on the net.
(2) a second step of fixing the net and the calcium silicate plate by driving the anchor through the calcium silicate plate from above the mortar base layer;
(3) A third step in which an exterior material is provided on the mortar base layer via a mortar-based adhesive to obtain an anchor and a calcium silicate plate with the exterior material,
(4) A reinforced concrete layer is provided on the anchor protruding side of the calcium silicate plate so that a reinforcing bar is placed while maintaining a space between the calcium silicate plate and then the reinforcing bar is embedded and in close contact with the calcium silicate plate. Forming a calcium silicate plate / precast reinforced concrete composite plate, and (5) installing and fixing the composite plate so that the reinforced concrete layer becomes a building frame during construction. Process.

  The method of laying the net-like material, forming the mortar base layer, driving the anchor, and providing the exterior material in the first to third steps are as described in the method (I).

  In the fourth step, first, reinforcing bars are arranged on the anchor protruding side of the calcium silicate plate while maintaining a space between the calcium silicate plate and a reinforcing bar layer is formed. The formation method of a reinforcing bar layer is not specifically limited, What is necessary is just to follow the well-known precast concrete member assembly method. The size of the space between the reinforcing bars to be arranged and the calcium silicate plate is not particularly limited, and can be set in consideration of the desired width of the reinforced concrete layer to be the building frame.

  The end of the reinforcing bar is usually projected from the end of the concrete of the calcium silicate / precast reinforced concrete composite plate (preferably about 5 to 400 mm). A method of using the protruding reinforcing bars will be described later.

  Next, a reinforced concrete layer is formed so that the reinforcing bars are embedded and in close contact with the calcium silicate plate. The method for forming the reinforced concrete layer is not particularly limited, and can be performed according to the procedure of a known precast concrete member assembling method.

  For example, a formwork for forming a reinforced concrete layer is formed on the outer periphery of the calcium silicate plate, and after placing the rebar, the concrete is placed in the formwork so that the rebar layer is in the middle of the concrete layer, The mold can be removed after the concrete is hardened. Thereby, a calcium silicate board / precast reinforced concrete composite board is obtained.

  In the fifth step, the construction method is completed by installing and fixing the calcium silicate plate / precast reinforced concrete composite plate so that the reinforced concrete layer becomes the building frame at the time of construction.

  In the fifth step, in order to join a plurality of composite plates to form a composite plate having a desired size, the protruding portion of the reinforcing bar described above can be used. That is, the joining of the composite plates can be performed by joining the reinforcing bars protruding from the composite plates adjacent to each other by welding or joints. In this case, it is preferable that the distance between adjacent bonded calcium silicate plates / precast reinforced concrete composite plates is about 5 to 400 mm. If the space generated in the joint is filled with concrete later, the joint can be held more firmly and the structure of the building frame can be made stronger.

  In the method (IV), the work of providing the exterior material does not always need to be included in the step (3), and can be performed after the step (5). That is, the exterior material can be provided at the end of all steps. Usually, since the type of exterior material varies depending on the property or preference, it is possible to construct an exterior material that more closely matches the property and preference if the exterior material is provided last. Further, it is possible to prevent the exterior material from being damaged during the construction.

(2) Dry type external heat insulation method The dry type external heat insulation method is characterized in that an exterior material fixture is provided on the outside of the calcium silicate plate and the exterior material is then fixed to the exterior material fixture.

  As such a dry-type external heat insulation method, for example, after a calcium silicate plate is provided on the outside wall surface of the building frame with or without an air layer, the calcium silicate plate is penetrated to reach the building frame. The anchor or screw screw is driven in, the exterior material fixture is installed on the outdoor surface of the calcium silicate plate, the calcium silicate plate is secured to the building frame, and then the exterior material is secured to the exterior material fixture Is preferred. As a screw screw, a well-known thing can be used.

  The exterior material fixture is not particularly limited, and can be appropriately selected according to the type of exterior material to be secured. For example, a lip groove type steel, a hat type steel, etc. are mentioned. Examples of the exterior material include the siding material, metal panel, plastic panel, and stone sticking.

  Anchors and screw screws not only serve to securely install the exterior material fixture on the outdoor surface of the calcium silicate plate, but also serve to securely fix the calcium silicate plate to the building frame. The anchor and screw screw driving method may be in accordance with a conventional method conventionally performed in a dry method.

  According to the outer heat insulation construction method of the present invention, it is possible to easily construct an outer heat insulating structure having good fire resistance, non-flammability, heat insulation and durability.

  The calcium silicate plate has good fire resistance, non-flammability and heat insulation, and has little deterioration over time. Therefore, the outer heat insulating structure obtained by the outer heat insulating method of the present invention can maintain good fire resistance, incombustibility, and heat insulating effects without deteriorating for a long time.

  Hereinafter, Example 1 and Example 2 are shown using FIG. 1 and FIG. 2, respectively, and this invention is demonstrated more concretely. However, the present invention is not limited to the description of the embodiments.

Example 1
On the outdoor side wall of the reinforced concrete frame ((1) in FIG. 1), through a mortar adhesive ((2) in FIG. 1) (manufactured by Nippon Stucco Co., Ltd.), a 910 mm square, a thickness of 30 mm and a specific gravity of 0.17 A calcium silicate plate ((3) in FIG. 1) (trade name “New Best Light” manufactured by Nippon Insulation Co., Ltd.) having a water repellent finish was provided on the surface thereof. The thickness of the air layer between the concrete frame and the calcium silicate plate was 15 mm.

The following procedure was followed when providing a calcium silicate plate;
· The surface of the reinforced concrete frame and calcium silicate plate, where the mortar adhesive described later is in contact with the mortar adhesive in advance. · 9 spots per sheet on the surface of the calcium silicate plate. A dumpling mortar adhesive was installed. A calcium silicate plate was crimped to the outdoor wall of the reinforced concrete frame.

  After providing the calcium silicate plate, a glass net (FIG. 1 (5)) (trade name “ARG Net TS” manufactured by Nippon Electric Glass Co., Ltd.) is used on the entire outdoor surface of the calcium silicate plate. Was laid by temporarily fixing several places.

  From the top of the glass net, the calcium silicate plate was penetrated, a hole for anchor driving was made so as to reach the reinforced concrete frame, and the anchor ((4) in FIG. 1) was driven. As the anchor bolt, a washer with a thin head was used, and the calcium silicate plate was driven without providing spot facings.

  Next, using a polymer cement mortar (trade name “Spring Coat” manufactured by Nippon Stucco Co., Ltd.), a mortar base layer ((6) in FIG. 1) was formed on the glass net. The thickness of the mortar base layer was 1 mm.

  Lastly, a 45 two-chome tile (FIG. 1 (8)) (trade name “Standard Earth”) manufactured by Nagoya Mosaic Kogyo Co., Ltd. via a mortar adhesive (FIG. 1 (7)) on the mortar base layer. ) To complete the outer insulation method.

Example 2
On the outdoor side wall of the reinforced concrete frame ((1) in FIG. 2), a mortar adhesive ((2) in FIG. 2) (manufactured by Nippon Stucco Co., Ltd.), a 910 mm square, a thickness of 30 mm, a specific gravity of 0.17 A calcium silicate plate ((3) in FIG. 2) (trade name “New Best Light” manufactured by Nippon Insulation Co., Ltd.) having a water repellent finish was provided on the surface thereof. The thickness of the air layer between the concrete frame and the calcium silicate plate was 5 mm.

The following procedure was followed when providing a calcium silicate plate;
-The surface of the reinforced concrete frame and calcium silicate, where the below-mentioned linear mortar adhesive is in contact, the mortar adhesive is squeezed in advance. A mortar-based adhesive was applied by applying three trowels in a linear shape of 200 mm and a length of about 800 mm. A calcium silicate plate was pressure-bonded to the outdoor wall surface of a reinforced concrete frame.

  After the calcium silicate plate is installed, screw screws ((9) in Fig. 2) are driven into the outdoor surface of the calcium silicate plate through the calcium silicate plate to reach the reinforced concrete frame, and the hat steel (Fig. 2 (10)) was fixed.

  Further, a metal panel ((11) in FIG. 2) was installed on the hat-shaped steel using screw screws ((9) in FIG. 2), and the outer heat insulating method was completed.

It is a figure which shows the one aspect | mode of the external heat insulation structure (formed by a wet construction method) of this invention. It is a figure which shows the one aspect | mode of the outer heat insulation structure (formed by a dry construction method) of this invention.

Explanation of symbols

(1) Building frame (steel reinforced concrete)
(2) Mortar adhesive (3) Calcium silicate plate (4) Anchor (5) Alkali-resistant glass net (6) Mortar base layer (7) Mortar adhesive (8) 45 2-chome tile (9) Screw screw (10) Exterior material fixture (hat steel)
(11) Exterior material (metal panel)

Claims (8)

It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
After the calcium silicate plate is provided on the outdoor wall surface of the building frame with or without an air layer, a net is laid on the entire outdoor surface of the calcium silicate plate, and the silica is further applied from above the net. After driving the anchor through the calcium plate to reach the building frame, fix the mesh and the calcium silicate plate, fix the calcium silicate plate and the building frame, and then form the mortar base layer on the net An outer heat insulating structure formed by providing an exterior material via a mortar adhesive on the mortar base layer.   The outer heat insulating structure according to claim 1, wherein a mortar base adjustment layer is further formed on the mortar base layer instead of providing an exterior material via a mortar base adhesive on the mortar base layer. An outer heat insulating structure formed by applying an exterior finish on a layer. It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
Preliminarily laying a net on the entire surface of one side of the calcium silicate plate and further forming a mortar base layer on the net, the air wall on the outdoor wall of the building frame with or without an air layer A calcium silicate plate with a mortar base layer formed is provided so that the mortar base layer is on the outdoor side, and then the anchor is driven so as to penetrate the calcium silicate plate from the top of the mortar base layer and reach the building frame. And an external heat insulating structure formed by fixing the calcium silicate plate and the calcium silicate plate and the building frame, and further providing an exterior material on the mortar base layer via a mortar adhesive.   The outer heat insulating structure according to claim 3, wherein a mortar base adjustment layer is further formed on the mortar base layer instead of providing an exterior material via a mortar base adhesive on the mortar base layer. An outer heat insulating structure formed by applying an exterior finish on a layer. An outer heat insulating structure formed on the outside wall surface of the building frame made of reinforced concrete, and formed by going through the following steps:
(1) A step of laying a net on the entire surface of one side of the calcium silicate plate in advance, and further forming a mortar base layer from above the net;
(2) a step of driving the anchor through the calcium silicate plate from above the mortar base layer, and fixing the net and the calcium silicate plate;
(3) A step of providing an exterior material via a mortar-based adhesive on the mortar base layer to obtain an anchor and a calcium silicate plate with the exterior material,
(4) A reinforced concrete layer is arranged on the anchor protruding side of the calcium silicate plate while reinforcing the reinforcing bar while maintaining a space between the calcium silicate plate and then embedding the reinforcing bar and in close contact with the calcium silicate plate. A step of forming a calcium silicate / precast reinforced concrete composite plate by forming, and (5) a step of installing and fixing the composite plate so that the reinforced concrete layer becomes a building frame during construction. It is an outer heat insulating structure formed on the outdoor side wall of a building frame made of reinforced concrete, steel reinforced concrete or masonry,
After the calcium silicate plate is installed on the outdoor wall of the building frame with or without air layer, the anchor or screw screw is driven through the calcium silicate plate to reach the building frame, and the exterior material fixture An outer heat insulating structure formed by fixing the calcium silicate plate to the building frame, and then fixing the exterior material to the exterior material fixture.   The outer heat insulating structure according to any one of claims 1 to 6, wherein the anchor is driven without providing spot facings on the calcium silicate plate.   The outer heat insulating structure according to any one of claims 1 to 7, wherein the calcium silicate plate has a bulk specific gravity of 0.05 to 1 and a thickness of 5 to 300 mm.

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