KR101027618B1 - A Outer Insulating Gang Form, a Method of Construction Outer Wall Concrete of a Building, and a Outer Wall of the Same - Google Patents

Abstract

The present invention is an external insulating gangform for curing the concrete for forming the external wall of the building, the outer formwork of a certain shape, the mesh attached to the front surface of the outer formwork, a plurality of horizontal supports spaced apart at a certain distance on the front surface of the mesh And an external insulating gangform comprising a plurality of vertical supports spaced apart at a distance from the front of the horizontal support and a layer of insulating foam uniformly applied to the front surface of the mesh.

According to the present invention, by improving the thermal curing curing process of the concrete wall outside Korea-China concrete, to simplify the construction process, it is possible to achieve cost reduction and air shortening by simplifying the construction process, to further improve the quality of the concrete exterior wall, construction The appearance of heavy buildings can be significantly improved.

Exterior wall, concrete, curing, insulation foam layer, urethane foam.

Description

A Outer Insulating Gang Form, a Method of Construction Outer Wall Concrete of a Building, and a Outer Wall of the Same}

The present invention relates to an external insulation gangform, a method for constructing a concrete exterior wall of a building, and a concrete exterior wall of a building constructed thereby, and more particularly, by applying an external insulation gangform in which an insulation foam layer is formed on an outer side of an external formwork. By improving the thermal curing process of winter concrete exterior wall, it simplifies the construction process of concrete exterior wall, achieves cost reduction and air shortening by simplifying the construction process, and improves the quality of concrete exterior wall of West and Korea The present invention relates to an exterior heat insulation gangform, a concrete exterior wall construction method of a building, and a concrete exterior wall of a building constructed thereby, which can significantly improve the appearance of a heavy building.

Typically, concrete is cured by the heat of hydration generated by the chemical reaction of water and cement, ie by the hydration reaction. The hardening of concrete is greatly affected by the outside temperature. In case of placing concrete during the cold season, the frost reaction and the frost damage due to water freezing in the concrete inhibit the hardening or strength formation of the concrete. In addition, when concrete is poured in the west, it is difficult to maintain the wet state due to the rapid evaporation of moisture, and the crack occurs as the temperature of the concrete rises more than necessary due to the heat of hydration and the outside temperature, which may cause fatal defects in the concrete. do.

As a security measure for solving the above-mentioned problems, in the middle and middle concrete curing process, after the concrete is poured, the structure is wrapped with a tent or a shade, or a non-woven fabric is attached to the form with an adhesive.

However, tents can be easily damaged by rapidly changing climates such as rainy seasons, sea breezes, typhoons, or heavy snow, which invade outside temperatures and cause the East Sea of concrete. Due to the maintenance work, the construction period may be delayed. On the other hand, nonwoven fabrics are easily damaged by being exposed to the outside, and are inefficient and economically incapable of permanent use.

In addition, the installation process of the tent or shade in a narrow working environment may cause a safety accident of the worker, there is also a problem that it is difficult to control the finish quality in the environment in which the tent or shade is installed.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an external insulation gangform formed with an insulation foam layer on the outside of the external formwork so as to simplify the thermal curing process of the winter concrete exterior wall. .

In addition, the present invention by applying an external insulation gangform to improve the thermal insulation process of the winter concrete exterior wall, to simplify the construction process of the concrete exterior wall, to achieve cost reduction and air shortening by simplifying the construction process, the middle and middle It is an object of the present invention to provide a method of constructing a concrete exterior wall of a building and a concrete exterior wall of a building constructed thereby, which can further improve the quality of the concrete exterior wall and significantly improve the appearance of the building during construction.

In order to achieve the above object, according to a preferred embodiment of the present invention, in the outer insulation gangform for curing the concrete outer wall of the building, the outer formwork of a certain shape, a mesh attached to the outer formwork front, Comprising a plurality of horizontal supports spaced apart at a certain distance on the front surface of the mesh, a plurality of vertical supports spaced apart at a distance on the front of the horizontal support, and a thermal insulation foam layer uniformly applied to the front surface of the mesh, Provide external insulation gangfoam.

Preferably, the insulating foam layer may be formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm.

Preferably, the insulating foam layer is attached to the front surface of the mesh by bonding or piece attachment to form a thickness of substantially 20mm to 40mm, the molded insulation is styrofoam, glass wool, rock wool board, It may also include at least one or more of the ondol or atyr insulation.

Preferably, a mesh or a dust net may be attached to the front surface of the insulating foam layer.

Preferably, the outer formwork, the mesh, and may further include a band surrounding the outer end of the insulation foam layer, the outer formwork, the mesh, and the insulation foam layer is in close contact with each other.

Preferably, it may further include a hot wire layer attached to the front of the outer formwork.

According to another preferred embodiment of the present invention, in the concrete exterior wall construction method of the building, a) installing the internal formwork for forming the concrete external wall of the building, and b) an external insulation gang form spaced apart from the internal formwork Install the outer insulation gangform, the outer formwork of a predetermined shape, the mesh is attached to the front surface of the outer formwork, a plurality of horizontal supports disposed at a predetermined distance on the front surface of the mesh, and a predetermined distance on the front of the horizontal support And a plurality of vertical supports which are arranged and disposed, and an insulating foam layer uniformly coated on the front surface of the mesh; and c) concrete is formed in the concrete injection space for forming an external wall formed between the installed inner formwork and the outer insulating gangform. Concrete in the building, including the step of injecting, and d) curing the injected concrete. It provides a section wall construction method.

Preferably, the insulating foam layer may be formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm.

According to another preferred embodiment of the present invention, in the concrete outer wall of the building, the inner formwork for forming the concrete outer wall of the building is installed, and then spaced apart from the inner formwork to install the outer insulation gangform, and then Injecting concrete into the concrete injection space for forming the outer wall formed between the inner formwork and the outer insulation gangform installed, and then curing the injected concrete is constructed, the outer insulation gangform, the outer formwork of the predetermined shape, and the outer formwork A mesh attached to the front surface, a plurality of horizontal supports disposed at a predetermined distance on the front surface of the mesh, a plurality of vertical supports disposed at a predetermined distance on the front surface of the horizontal support, and an insulating foam uniformly coated on the front surface of the mesh It provides a concrete exterior wall of a building, including a layer.

Preferably, the insulating foam layer may be formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm.

According to the present invention, by forming a heat insulation foam layer by applying a heat insulating material or a molded heat insulating material to the outside of the outside form to a certain thickness, it is possible to effectively prevent the external exposure of the heat of hydration of concrete, and effectively block the heat exchange with the outside air temperature, And there is an effect that can further improve the quality of the concrete exterior wall of China.

In addition, compared to a separate process for curing heat-insulating concrete, such as installing a tent on a concrete outer wall to insulate curing during winter and winter, construction costs are simplified and cost can be reduced. By shortening the duration of the internal and external formwork there is an effect that can significantly reduce the process period and construction costs.

In addition, unlike the tent installation environment for curing concrete insulation, by carrying out the subsequent process in an open environment, the finishing work is easier to manage, and it can maintain the beautiful appearance by blocking the inflow and binding of external dust to the concrete exterior wall. It has an effect.

Furthermore, regardless of external conditions, such as rapid temperature changes or weather changes in heavy snow, the fluctuations in construction periods and construction costs can be minimized, making it easier to predict and manage process periods and construction costs.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A is a schematic perspective view of an outer insulation gangform according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of the outer insulation gangform of FIG. 1A.

1A and 1B, the outer insulation gangform 100 according to an embodiment of the present invention includes an outer formwork 110, a mesh 120, a horizontal support 130, a vertical support 140, and an insulation foam layer. Consists of 150.

First, in the outer insulation gangform 100 for curing the concrete for forming the outer wall of the building, the outer formwork 110 may be formed of a panel of a predetermined shape. Here, the outer formwork 110 is a formwork spaced apart from the inner formwork (not shown) to form a concrete injection space for forming the concrete outer wall.

Mesh 120 is attached to the front of the outer formwork 110, as shown in Figures 1a and 1b. On the other hand, the mesh 120 facilitates the removal of the insulation foam layer 150 to be described later, ie, the removal of the insulation foam layer 150 from the external formwork 110 after use of the outer insulation gang foam 100, Environmental pollution due to dissolution (melting) or incineration of the unnecessary insulation foam layer 150 may be prevented in advance.

The horizontal support 130 is disposed a plurality of spaced apart at a predetermined distance in front of the mesh 120. Here, the horizontal support 130 may be fixed by welding to the front of the outer formwork 110.

The vertical support 140 is disposed a plurality of spaced apart at a predetermined distance in front of the horizontal support (130). On the other hand, the vertical support 140 is formed by a horizontal support 130, the outer mold 110 and the mesh 120 is formed a predetermined distance apart.

The insulation foam layer 150 is uniformly applied to the entire surface of the mesh 120. Here, the insulating foam layer 150 is formed by applying at least one or more of a heat insulating material, such as urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm. Can be. Alternatively, the insulation foam layer 150 is attached to the front surface of the mesh 120 by bonding or piece attachment to form a thickness of 20 mm to 40 mm, wherein the molded insulation is made of styrofoam, glass wool ( It may include at least one or more of glass fiber, rockwool board, ondol, or an artilon thermal insulation.

Here, the insulation foam layer 150 having a thickness of less than 20 mm has little effect of blocking heat exchange with the outside temperature, and the heat of hydration of concrete is exposed to the outside, which may significantly delay the hardening of the concrete. As a result, it is not possible to ensure the high quality of the Seojung and Korea-China concrete exterior walls. In addition, the formation of the insulating foam layer 150 having a thickness of more than 40 mm, there is a problem that the construction cost is significantly increased compared to the heat exchange blocking effect and the hydration heat exposure effect.

Therefore, it is preferable to apply the above-described heat insulating material to a thickness of substantially 20 mm to 40 mm to form the heat insulating foam layer 150. For reference, forming the insulation foam layer by applying urea foam to a thickness of 20 mm to 40 mm among the above-described heat insulating materials has a similar effect of preventing heat exchange and exposure to heat of hydration similar to the insulation foam layer formed of styrofoam having a thickness of 80 mm or more. Can be provided.

Meanwhile, the insulation foam layer 150 coated with a thickness of 20 mm to 40 mm meets the insulation standard of the central part of Korea, and the thickness and insulation of the insulation foam layer 150 according to the type of building, construction area, or season. Can be optionally set.

In addition, a mesh (not shown) or a dust net (not shown) may be additionally attached to the front surface of the insulation foam layer 150 to prevent damage to the insulation foam layer 150 and maintain a beautiful appearance.

In addition, the band surrounding the outer formwork 110, the mesh 120, and the outer end of the insulation foam layer 150, the outer formwork 110, the mesh 120, and the insulation foam layer 150 in close contact with each other ( It may also include a). That is, at the end, such as the sides or corners of a conventional thermal insulation gangform, the side or corners of the components forming the thermal insulation gangform due to a decrease in the adhesion force may be spaced apart and fall or penetrate the outside air into the spaces spaced apart. In order to form the steel band to closely contact the outer formwork 110, the mesh 120, and the insulating foam layer 150 according to the present embodiment. For example, it is possible to configure a triangular-shaped steel band that can surround the '' 'shape or the corners.

In addition, it may further include a hot wire layer (not shown) attached to the front of the outer mold (110). That is, since a cold bridge phenomenon may occur at the lowermost end of a conventional thermal insulation gangform, for example, a joint part with another sulting layer, in order to prevent this, a hot wire layer in which a heating wire is inserted at the lowermost end of the front surface of the external formwork 110 is prevented. May be formed.

In addition, a side length of, for example, 30 cm or more may be formed on one side of the outer insulating gangform according to the present embodiment so as to allow overlap with another adjacent outer insulating gangform. On the other hand, by separately forming a cup-shaped heat insulation cover (not shown) to cover the form tie, it is possible to easily solve the heat insulation foam layer defect of the form tie (not shown) as a connecting rod.

Therefore, as mentioned above, by forming a heat insulation foam layer by applying a heat insulating material or a molded heat insulating material to the outside of the external formwork to a certain thickness, it is possible to effectively prevent the external exposure of the heat of hydration of concrete, and effectively block heat exchange with the outside temperature. Therefore, it is possible to further improve the quality of the middle and outer concrete concrete walls. In addition, compared to a separate process for curing heat-insulating concrete, such as installing a tent on a concrete outer wall to insulate curing during winter and winter, construction costs are simplified and cost can be reduced. By shortening the lifetime of the internal and external formwork, the process period and the construction cost can be significantly reduced. In addition, unlike the tent installation environment for curing concrete insulation, by carrying out the subsequent process in an open environment, the finishing work is easier to manage, and it can maintain the beautiful appearance by blocking the inflow and binding of external dust to the concrete exterior wall. have. Furthermore, regardless of external conditions, such as seasonal changes, sudden temperature changes, or weather changes in heavy snow, the fluctuations in construction periods and construction costs can be minimized, making it easier to predict and manage process periods and construction costs.

Figure 2 is a schematic process flow chart of a concrete exterior wall construction method of a building according to another embodiment of the present invention.

2, the concrete outer wall construction method of the building according to another embodiment of the present invention is the internal formwork installation step (S110), the external insulation gangform installation step (S120), concrete injection step (S130), It is made of concrete curing step (S140).

First, an internal formwork for forming an exterior wall of a building, such as an apartment, an apartment-type factory, an apartment house, or an officetel, that is, a concrete exterior wall is installed (S110).

Then, by installing the outer insulation gang foam so as to be spaced apart from the inner formwork to form a concrete injection space for forming the outer wall (S120). Here, the internal formwork refers to the formwork installed inside the concrete outer wall of the building, that is, the interior side of the building, the outer insulation gangform is the outer formwork and insulation foam layer installed on the outside of the outer wall, that is, the outdoor side of the building. it means. For example, the outer insulation gangform may have a shape of external formwork, a mesh attached to the front of the external formwork, a plurality of horizontal supports disposed at a predetermined distance on the front surface of the mesh, and a plurality of vertical positions disposed at a predetermined distance on the front surface of the horizontal support. And a support and a layer of insulating foam uniformly applied to the entire surface of the mesh.

Here, the insulation foam layer may be formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of substantially 20mm to 40mm. On the other hand, as is well known, the thickness of the insulation foam layer by the thermal insulation or molded insulation to be sprayed may be determined differently depending on the required heat permeation according to the regional difference.

In this embodiment, a heat insulating material or a molded heat insulating material to be sprayed on the outside of the outer formwork was applied to a thickness of 20 mm to 40 mm to form a heat insulating foam layer. Here, the insulating foam layer having a thickness of less than 20mm has little effect of blocking heat exchange with the outside temperature, and the heat of concrete hydration is exposed to the outside, which may significantly delay the hardening of concrete. As a result, it is not possible to ensure the high quality of the Seojung and Korea-China concrete exterior walls. In addition, when the insulating foam layer having a thickness of more than 40mm, there is a problem that the construction cost is significantly increased compared to the heat exchange blocking effect and the hydration heat exposure effect.

Therefore, it is preferable to apply the above-described heat insulating material to a thickness of substantially 20 mm to 40 mm to form a heat insulating foam layer. For reference, forming the insulation foam layer by applying the urea foam to the thickness of 20 to 40 mm of the above-described thermal insulation material, the heat exchange blocking effect and the prevention of hydration heat exposure similar to the insulation foam layer formed of styrofoam having a thickness of 80 mm or more Can be provided.

Then, the concrete is injected into the concrete injection space for forming the outer wall formed between the inner formwork and the outer insulation gangform (S130).

On the other hand, after the concrete injection step (S130), it is also possible to install a guide frame (G / F; guide frame) for the work reinforcement on the outside of the outer insulation gangform. Here, the outer side of the outer insulation gangform means the outer side of the outer insulation gangform facing the concrete injection space.

After that, the thermal insulation of the concrete injected into the concrete injection space for forming the outer wall (S140). Here, the heat-insulated curing of the concrete injected using a heating device, such as a stove or a hot air fan can be heated.

Figure 3a is a schematic cross-sectional view of the concrete exterior wall of the building constructed by the concrete exterior wall construction method according to another embodiment of the present invention, Figure 3b is a schematic enlarged cross-sectional view of the external insulating gangform of Figure 3a, Figure 5a Figure 2 shows the actual picture of the concrete exterior wall of the building constructed by the concrete exterior wall construction method of Figure 2, Figure 5b is a concrete exterior wall of the building constructed by the concrete exterior wall construction method of the building of Figure 2 Another real picture is shown. Here, the description overlapping with the concrete exterior wall construction method of the building described above with reference to FIG. 2 will be simplified or omitted below.

As shown in Figure 3a, the concrete outer wall of the building, install the internal formwork 210 for forming the concrete external wall of the building, and then install an external insulation gang foam spaced apart from the internal formwork 210 by a certain distance, Since the concrete 230 is injected into the concrete injection space for forming the outer wall formed between the inner formwork 210 and the outer insulation gangform installed, and then curing the injected concrete is constructed.

On the other hand, the outer insulation gangform, a certain shape of the external formwork 221, the mesh attached to the front surface of the external formwork 221, a plurality of horizontal supports arranged at a certain distance on the front surface of the mesh, and a predetermined distance on the horizontal support front It includes a plurality of vertical support and disposed in the insulating layer, the insulating foam layer 222 uniformly applied to the front surface of the mesh. Here, the insulating foam layer 222 may be formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm. On the other hand, since the effect on the setting range of the appropriate thickness of the insulating foam layer 222 is substantially the same as the effect on the appropriate thickness of the insulating foam layer 222 described with reference to FIGS. It will be omitted below.

On the other hand, after the concrete 230 is injected, a guide frame (not shown) which is a reinforcing bar for work may be installed on the outside of the outer insulation gangform.

Reference numeral 240 denotes a footrest for the worker.

FIG. 4A is a schematic layout view of a temperature measuring sensor installed inside and outside a concrete exterior wall that is constructed by the concrete exterior wall construction method of FIG. 2, and FIG. 4B is a change in hydration heat for each time measured by the temperature measuring sensor of FIG. 4A. 5C is a reference diagram showing a temperature sensor and equipment, and FIG. 5D is a reference diagram showing a concrete construction part of a building.

4A, 5C, and 5D, the concrete exterior wall construction method according to an embodiment of the present invention and the heat loss prevention effect of the concrete exterior wall, that is, the hydration heat exposure and the effect of leaving the outside temperature and heat exchange blocking so that it can be verified Temperature measuring sensors A, B, C, D, E, and F are installed inside and outside the exterior walls of the building.

The first to third temperature measuring sensors A, B, and C measure the temperature of the outer wall, that is, the external reinforcing bar, during the concrete curing process for forming the concrete outer wall 230 at each time zone. The fourth temperature measuring sensor (D) measures the temperature of the inner wall, that is, the internal reinforcement, for each time zone, the fifth temperature measuring sensor (E) measures the internal temperature of the household for each time zone, and the sixth temperature measuring sensor (F) Measure the outside temperature by time zone.

Table 1 and Table 2 below are the data recording the temperature measured for each time zone of the first to sixth temperature measuring sensors (A, B, C, D, E, F).

division 12:00 14:00 16:00 18:00 20:00 22:00 0:00 2:00 4:00 6:00 8:00 External rebar -0.6 2.6 7.5 13.1 12.6 10.4 12.9 9.2 9.1 9.1 9.2 Internal rebar 0 4.5 9.8 14.4 13.8 15.5 15.3 16.6 16.3 19.5 20.7 Outside temperature -2.5 0.8 0.7 0.2 -0.6 -1.2 -2.1 -2.2 -3.5 -3.9 -3.4 Inside household 4.4 16.8 13.9 10.7 12.1 16.2 13.4 16.4 16.1 16.7 16.7

division 10:00 12:00 14:00 16:00 18:00 20:00 22:00 0:00 2:00 4:00 6:00 External rebar 9.5 10.9 11.7 13.1 14 11.9 10.9 12.8 13.3 11.3 9.4 Internal rebar 22 23.5 25.1 25.3 25.4 24.2 23.3 22.1 21.8 18.8 16.2 Outside temperature -1.6 -0.5 1.5 1.4 1.4 0.1 -0.4 -1.1 -1.5 -2.1 -1.4 Inside household 20.3 20.1 19 18.5 16.6 15.9 15.6 14.2 13.6 12.7 7.5

In FIG. 4B, graphs showing changes in sign language for each time zone recorded in Tables 1 and 2 are shown. As shown in Figure 4b, it can be seen that the temperature of the concrete outer wall according to the present embodiment is relatively small temperature fluctuation range or change range compared to the time-phase change of the inner wall temperature or the temperature inside the generation. In addition, it can be seen that the temperature of the concrete outer wall maintains a constant temperature around 10 ° C in the image even in comparison with the outside air temperature below zero.

Therefore, by applying the above-described heat insulating material to the outside of the external formwork to a certain thickness, by applying an external heat insulating gang form in which the heat insulating foam layer is formed in the concrete external wall curing process, the external exposure of the heat of hydration of concrete can be effectively prevented, and the heat exchange with the outside temperature It can effectively block the, it is possible to further improve the quality of the west and China-China concrete exterior wall.
On the other hand, as an embodiment different from the above embodiment, it is possible to omit the components of the mesh 120 constituting the external insulation gangform 100, and to add a release agent and a peeling paint applied.
That is, in order to facilitate the separation of the mold of the outer mold 110 and the insulating foam layer 150, the releasing agent is a smooth organic substance called silicon and a releasing agent mainly used in the polymer compound or fluorine-based compound combined with silicon. In an embodiment, a silicone release agent (concentration 20%) is applied to the entire portion of the insulation that is insulated through the insulation foam layer 150.
In order to facilitate the separation of the mold of the outer mold 110 and the insulating foam layer 150, the peeling paint, which is mainly made of alkyd resin, has a thickness of approximately 30 microns on the applied release agent. Is applied.
After that, the insulating foam layer 150 is formed on the applied peeling paint.
Accordingly, after using the insulation gang foam 100 in the construction site, the outer formwork 110 and the insulation foam layer 150 is easily separated by the release agent and the peeling paint.

In the above description of the embodiments of the present invention with reference to the accompanying drawings, but described with respect to the external insulation gangform having a specific shape and structure, the concrete external wall construction method of the building, and the concrete exterior wall of the building thereby constructed, The present invention can be variously modified and changed by those skilled in the art, and such modifications and variations should be interpreted as falling within the protection scope of the present invention.

1A is a schematic perspective view of an outer insulation gangform according to one embodiment of the present invention.

FIG. 1B is a schematic cross-sectional view of the outer insulating gangform of FIG. 1A.

Figure 2 is a schematic process flow chart of a concrete exterior wall construction method of a building according to another embodiment of the present invention.

Figure 3a is a schematic cross-sectional view of the concrete exterior wall of the building constructed by the concrete exterior wall construction method according to another embodiment of the present invention.

3B is a schematic enlarged cross-sectional view of the outer insulating gangform of FIG. 3A.

FIG. 4A is a schematic layout view of a temperature measuring sensor installed inside and outside the concrete exterior wall to be constructed by the concrete exterior wall construction method of the building of FIG. 2.

FIG. 4B is a graph showing hydration heat change for each time zone measured by the temperature measuring sensor of FIG. 4A.

Figure 5a shows the actual picture of the concrete exterior wall of the building constructed by the concrete exterior wall construction method of the building of FIG.

Figure 5b is another actual picture of the concrete exterior wall of the building constructed by the concrete exterior wall construction method of the building of FIG.
5C is a reference diagram showing a temperature measuring sensor and equipment.
5d is a reference diagram showing a concrete construction of a building.

Claims (10)

In the external thermal insulation gang foam containing the insulation foam to insulate the concrete for forming the exterior wall of the building, An outer formwork having a predetermined shape formed spaced apart from the inner formwork at a predetermined interval; A mesh attached to the front side of the outer formwork; A plurality of horizontal supports spaced apart at a distance from the front of the mesh; And a plurality of vertical supports spaced apart at a distance from the front of the horizontal support. Insulating foam layer is uniformly applied to the front of the mesh; including, The insulation foam layer, An outer insulating gangform, characterized in that formed by applying at least one or more of urethane foam, urea foam, perlite, soft lightweight aqueous foam insulation, or rock wool to a thickness of 20 mm to 40 mm. delete delete delete delete delete In the construction method of the concrete exterior wall of the building using the external insulation gang foam containing the insulation foam, Installing an internal formwork for forming a concrete external wall of the building; The outer formwork having a predetermined shape formed to be spaced apart from the inner formwork, the mesh is attached to the front of the outer formwork, a plurality of horizontal supports arranged at a predetermined distance to the front of the mesh and the front of the horizontal support Installing an outer insulation gangform configured to include a plurality of vertical supports disposed at a distance and an insulation foam layer uniformly coated on the front surface of the mesh so as to be spaced apart from the inner formwork by a predetermined distance; Placing concrete in the concrete injection space for forming an external wall formed between the installed internal formwork and the external insulating gangform; Curing the injected concrete; Concrete exterior wall construction method of the building, characterized in that it comprises a. delete In the concrete exterior wall of the building using the external insulation gang foam containing the insulation foam, Install an internal formwork for forming the concrete external wall of the building, and then install an external insulation gangform spaced apart from the internal formwork, and then concrete in the concrete injection space for forming an external wall formed between the installed internal formwork and the external insulation gangform After pouring, after curing the poured concrete to be constructed, The outer insulation gangform, the outer formwork of a predetermined shape formed to be spaced apart from the inner formwork, a mesh attached to the front surface of the outer formwork, a plurality of horizontal supports disposed at a predetermined distance on the front surface of the mesh and the A concrete exterior wall of a building configured to include a plurality of vertical supports disposed at a predetermined distance in front of the horizontal support, and a layer of insulation foam uniformly applied to the front of the mesh. delete

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