Interior insulation exposed concrete wall system and construction method using transparent formwork and separated concrete placing device

Abstract

The present invention relates to a construction technology for concrete walls of building structures, and more specifically, to a system and a construction method thereof that enables stable construction of an exposed concrete wall with intermediate insulation by using a separate pouring machine to supply a concrete mixture (ready-mix concrete) supplied from the discharge section of a pump truck to the inner and outer wall spaces, respectively, separated by an intermediate insulation material, controlling the flow rate of the concrete mixture to regulate the pouring amount for each space, thereby preventing deformation of the intermediate insulation material, and visually checking the pouring status through a transparent formwork.

Description

Technology Field

[0001] The present invention relates to a construction technology for concrete walls of building structures, and more specifically, to a system and a construction method thereof that enables stable construction of an exposed concrete wall with intermediate insulation by using a separate pouring machine to supply a concrete mixture (ready-mix concrete) supplied from the discharge section of a pump truck to the inner and outer wall spaces, respectively, separated by an intermediate insulation material, controlling the flow rate of the concrete mixture to regulate the pouring amount for each space, thereby preventing deformation of the intermediate insulation material, and visually checking the pouring status through a transparent formwork. Background Technology

[0002] The intermediate insulation exposed concrete wall system (hereinafter referred to as the "intermediate insulation system") is a construction method that simultaneously ensures structural stability and thermal insulation performance by placing insulation material between the inner and outer sides of a concrete structure. Due to its advantage of effectively reducing heat loss, its scope of application is gradually expanding as the demand for high-insulation and high-airtight buildings increases recently. In such intermediate insulation systems, since the insulation material is formed by being embedded within the concrete structure, maintaining the positional stability of the insulation during construction acts as a key factor determining the structural and thermal performance of the entire wall.

[0003] However, in the construction method of intermediate insulation systems according to conventional technology, there was a problem in that it was difficult to precisely control the flow and pouring volume of concrete supplied to the inner and outer wall spaces during concrete pouring. In particular, when the concrete mixture (ready-mix concrete) supplied via a pump truck is poured through a single discharge path, the pouring pressure acts equally or unevenly despite the thicknesses of the inner and outer wall spaces formed based on the intermediate insulation material being different, which can cause a phenomenon where the lateral pressure of the concrete is concentrated in a specific area.

[0004] Due to the concentration of lateral pressure in the concrete, problems frequently occurred where intermediate insulation was pushed to one side or deformed during the concrete pouring process. In particular, when localized lateral pressure was high, it resulted in damage to the insulation or caused the joints between the insulation layers to separate or break. Such displacement of the insulation and damage to the joints impair the continuity of the insulation layer, leading to thermal bridging. This not only significantly reduces the insulation performance intended during the architectural design phase but can also lead to long-term issues such as condensation, increased energy loss, and reduced durability of the concrete structure.

[0005] Furthermore, in the construction method of intermediate insulation systems according to conventional technology, sufficient means were not provided to intuitively check the pouring status from the indoor or outdoor side during the concrete pouring process. Consequently, there were limitations in identifying in real-time during construction whether the position or deformation of the intermediate insulation material had changed, or in detecting imbalances in the pouring progress and volume between the inner and outer wall spaces formed based on the insulation material, and in responding immediately to such issues. In particular, because it is difficult to visually check for changes in lateral pressure acting on the intermediate insulation material or the flow state of the concrete during the continuous pouring process, problems arose where construction proceeded without the contractor recognizing abnormalities in the condition of the insulation material or pouring imbalances in advance. Prior art literature

[0006] KR 10-1214980 B1, 2012. 12. 17.KR 10-1258188 B1, 2013. 04. 29.KR 10-1286016 B1, 2013. 07. 09.KR 10-2025-0045318 A, 2025. 04. 01. The problem to be solved

[0007] As explained above, the construction technology for exposed concrete walls with intermediate insulation according to the prior art has limitations in effectively controlling the flow and lateral pressure generated during the concrete pouring process and maintaining a stable arrangement of the insulation material, and furthermore, it fails to provide sufficient means to check the pouring status in real time during construction.

[0008] Therefore, the present invention can be proposed to solve the various problems of the prior art.

[0009] The objective of the present invention is to provide a method for constructing an exposed concrete wall with intermediate insulation that enables the stable construction of an intermediate insulation system by effectively controlling the flow and lateral pressure generated during the concrete pouring process when constructing the exposed concrete wall with intermediate insulation, thereby preventing deformation or displacement of the intermediate insulation material and stably securing the continuity of the insulation layer.

[0010] In addition, another objective of the present invention is to provide a method for constructing an exposed concrete wall with intermediate insulation, which allows for the stable construction of the intermediate insulation system by supplying a concrete mixture supplied from the discharge section of a pump truck to the inner and outer wall spaces formed based on the intermediate insulation material, optimizing the amount of concrete poured between the inner and outer wall spaces by controlling the flow rate of the concrete mixture in correspondence with the wall thickness of each space, and preventing the phenomenon where concrete lateral pressure is concentrated in a specific area.

[0011] In addition, another objective of the present invention is to provide a system for an exposed concrete wall with intermediate insulation and a method for constructing the same, which allows for the visual inspection of the pouring status from both the indoor and outdoor sides during the concrete pouring process by applying a transparent formwork, thereby enabling real-time identification of whether the insulation is deformed and the progress of the pouring during construction, and allowing for appropriate responses to prevent construction defects that may occur after the completion of pouring.

[0012] Furthermore, the present invention is not limited to the aforementioned purposes, and various additional purposes may be provided through the technologies described in the embodiments and claims below. means of solving the problem

[0013] An embodiment of the present invention for achieving the above-mentioned purpose comprises: (a) a process of constructing a foundation; (b) a process of installing an outer formwork on the foundation; (c) a process of installing a window / door opening box on the outer formwork; (d) a process of installing a pattern formwork on the inner surface of the outer formwork; (e) a process of arranging reinforcing bars for the outer wall inside the pattern formwork; (f) a process of installing an intermediate insulation material for the wall inside the reinforcing bars for the outer wall; (g) a process of installing tie bolts penetrating the outer formwork, the pattern formwork, and the intermediate insulation material; (h) a process of arranging reinforcing bars for the inner wall inside the intermediate insulation material; (i) a process of installing an inner formwork made of a transparent board inside the reinforcing bars for the inner wall; (j) a process of fastening and fixing the tie bolts penetrating the inner formwork using nuts. and (k) a method for constructing an exposed concrete wall system with intermediate insulation using a transparent formwork and a separate pouring machine, comprising the process of controlling the discharge flow rate of a concrete mixture supplied through a separate discharge pipe connected to a transfer pipe connected to the discharge part of a pump truck using a separate pouring machine, and thereby supplying the concrete mixture separately to the inner wall space and the outer wall space and pouring it.

[0014] In addition, the above process (a) includes the process of horizontally installing a passive-type foundation floor insulation on the upper surface of the foundation; the process of vertically installing a foundation intermediate insulation on the side of the foundation; and the process of forming a foundation concrete mat on top of the foundation floor insulation, wherein the foundation intermediate insulation may be installed extending higher than the upper surface of the foundation concrete mat.

[0015] Additionally, between the above process (e) and the above process (f), the method further includes a process of installing a spacer on the reinforcing bar for the outer wall, and in the above process (f), the spacer can be fitted into and joined to a groove formed in the middle insulation material for the wall.

[0016] In addition, between the above process (f) and the above process (g), the process of installing a support rod at the joint between the intermediate insulation materials for the wall may be further included.

[0017] In addition, between the above process (f) and the above process (g), the process of installing a non-combustible reinforcing material around the opening box for the window may be further included.

[0018] Additionally, between the above process (j) and the above process (k), the process may further include: a process of protecting the upper part of the intermediate insulation material for the wall with a protective cover; a process of fixing the outer formwork and the inner formwork using an insulation material fixing bracket; and a process of installing a marking member for checking the concrete pouring height on one side of the pattern formwork.

[0019] In addition, the separation discharge pipe is formed into two branches to supply the concrete mixture supplied from the transfer pipe separately to the inner wall space and the outer wall space, respectively, and the separation discharge pipe may be formed with the same diameter.

[0020] In addition, the above-mentioned separation pouring device is installed in the outer wall discharge pipe among the separation discharge pipes that discharges the concrete mixture into the outer wall space, and can control the flow rate of the concrete mixture supplied to the outer wall space.

[0021] Additionally, the separation pouring device may include a guide coupler coupled to the discharge pipe for the outer wall; a discharge volume control inserted perpendicular to the axis of the discharge pipe for the outer wall through the guide coupler to partially or completely block the discharge path; and a movable rod connected to the discharge volume control to operate the insertion and withdrawal of the discharge volume control.

[0022] In addition, an embodiment of the present invention for achieving the above-mentioned purpose provides a mid-insulation exposed concrete wall system constructed through a construction method of a mid-insulation exposed concrete wall system using the above-mentioned transparent formwork and a separate casting machine. Effects of the invention

[0023] As described above, according to the present invention, a concrete mixture supplied from the discharge section of a pump truck is supplied separately to inner and outer wall spaces formed based on the intermediate insulation material, and by controlling the flow rate of the concrete mixture in correspondence with the wall thickness and construction conditions of each space, the flow and lateral pressure generated during the concrete pouring process can be controlled more effectively. Accordingly, unbalanced lateral pressure acting on the intermediate insulation material can be alleviated, and deformation or displacement of the insulation material can be prevented, thereby stably maintaining the continuity of the insulation layer.

[0024] Furthermore, according to the present invention, since the pouring volume between the inner and outer wall spaces can be precisely controlled, the phenomenon of concrete lateral pressure being locally concentrated in a specific area can be suppressed, thereby improving structural stability and construction quality when constructing intermediate insulation exposed concrete walls. In particular, by securing appropriate pouring volumes for wall spaces having different thicknesses based on the intermediate insulation material, construction defects caused by pouring imbalances, which frequently occurred in the construction methods of conventional intermediate insulation systems, can be effectively reduced.

[0025] In addition, according to the present invention, by applying a transparent formwork so that the pouring status can be visually checked from both the indoor and outdoor sides during the concrete pouring process, it is possible to identify in real time during construction whether the intermediate insulation is deformed or the pouring progress status, and to respond appropriately. As a result, problems such as the discovery of construction defects after the pouring is completed can be prevented in advance, and delays in the construction period and increases in costs due to repair and reinforcement work can be reduced.

[0026] Accordingly, the intermediate insulation exposed concrete wall system and the construction method according to the present invention can provide the effect of simultaneously securing stable constructability and excellent thermal insulation performance by comprehensively improving structural and construction problems that may occur during the construction of an intermediate insulation wall. Brief explanation of the drawing

[0027] FIG. 1 is a flowchart showing a construction method of an exposed concrete wall system with intermediate insulation according to an embodiment of the present invention. FIGS. 2 to 17 are drawings showing the construction method of the intermediate insulation exposed concrete wall system illustrated in FIG. 1, for each process. Specific details for implementing the invention

[0028] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms.

[0029] The embodiments described herein are provided to ensure that the disclosure of the invention is complete and to fully inform those skilled in the art of the scope of the invention. The invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously.

[0030] Throughout the specification, the same reference numerals refer to the same components. Additionally, each drawing may be exaggerated for convenience of explanation, and additional components may be formed above or below it. Furthermore, the terms mentioned are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. Also, components and operations referred to as 'comprising (or comprising)' do not exclude the addition of one or more other components and operations.

[0031] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless otherwise defined.

[0032] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

[0033] FIG. 1 is a flowchart schematically illustrating a construction method of a mid-insulation exposed concrete wall system according to an embodiment of the present invention, and FIGS. 2 to 17 are drawings schematically illustrating the construction method of the mid-insulation exposed concrete wall system illustrated in FIG. 1 for each process.

[0034] Referring to FIGS. 1 and FIGS. 2, first, the foundation is constructed (S1).

[0035] As shown in FIG. 2, a passive type foundation floor insulation (2) is horizontally arranged on the upper surface of the foundation (foundation base of a building) (1), and a foundation intermediate insulation (3) is vertically arranged on the side of the foundation (1). Accordingly, the foundation intermediate insulation (3) is orthogonally arranged in a vertical direction from one side of the foundation floor insulation (2) while one side of the foundation (1) is in close contact with the side of the foundation (1).

[0036] A foundation concrete mat (4) is formed on the upper part of the foundation floor insulation (2). At this time, a plurality of grooves (refer to the 'circular dotted line' in FIG. 1) are formed in the foundation floor insulation (2) and the foundation middle insulation (3), respectively. Accordingly, after pouring the foundation concrete mat (4), the foundation concrete mat (4) is joined by interlocking within the grooves of the foundation floor insulation (2) and the foundation middle insulation (3). As a result, the lifting phenomenon of the foundation floor insulation (2) and the foundation middle insulation (3) can be prevented.

[0037] Meanwhile, the foundation intermediate insulation (3) is positioned to extend upward above the upper height of the foundation concrete mat (4). For example, the foundation intermediate insulation (3) can be installed to extend upward by approximately 200 to 500 mm or more relative to the upper surface of the foundation concrete mat (4). Accordingly, the foundation floor insulation (2) and the foundation intermediate insulation (3) are continuously connected to the foundation (1), thereby preventing the insulation layer from being severed at the joint between the foundation and the foundation (1).

[0038] Through this configuration, the foundation intermediate insulation material (3) is continuously arranged even in the boundary area where the foundation part and the foundation (1) meet, so that the joint section prone to thermal bridges is blocked by the insulation line, thereby reducing the heat transfer path between the outside air and the inside air. As a result, the thermal insulation performance of the entire exterior wall can be improved. In particular, compared to a conventional structure where insulation is limited to the top of the foundation concrete mat (4), the structure in which the foundation intermediate insulation material (3) extends upward can more stably secure the continuity of the insulation layer in the connection section with the exterior wall insulation layer, thereby effectively reducing heat loss at the joint between the foundation part and the foundation (1).

[0039] Next, as shown in FIGS. 1 and 3, a Euroform is installed as an outer formwork (5) on the upper part of the foundation (1), and a window opening box (6) is installed on the outer formwork (5) (S2). At this time, a square (horizontal square 60×28mm) is placed on the foundation concrete mat (4) to form a reference line in order to secure the installation standard of the outer formwork (5). Afterward, an outer formwork (5) made of Euroform is installed on the upper part of the foundation (1). Since tie holes are formed in the Euroform at standardized locations, for example, at intervals of 300 to 700 mm, the position of the outer formwork (5) is aligned based on the arrangement of the tie holes and then fastened to install it. By applying an outer formwork (5) with standardized tie hole positions in this way, the outer formwork (5) can be reused at the same location even when construction is repeated, thereby improving reproducibility.

[0040] The window opening box (6) is a temporary structure positioned in correspondence with the location where the window is to be installed while the outer formwork (5) is installed, and serves to accurately maintain the shape and dimensions of the window opening during concrete pouring. The window opening box (6) is installed in the central part of the outer formwork (5) (or may be changed depending on the window location), and prevents concrete mixture from flowing into the interior of the opening during the concrete pouring process, while simultaneously guiding the concrete around the window opening to be stably molded according to the design shape. The window opening box (6) is firmly connected to the outer formwork (5) so that its position is not deformed or displaced by the flow and lateral pressure of the concrete occurring during pouring, and may also be additionally fixed to the inner formwork and / or reinforcing bars on the internal load-bearing wall side as needed. Through this, the verticality and right angle of the window opening can be secured, and damage to the concrete around the window opening or shape defects can be suppressed even when demolding after pouring is completed.

[0041] Next, as shown in FIGS. 1 and 4, a pattern formwork (7) is installed (S3). A pattern formwork (7) is installed on the inner side of the outer formwork (5). The pattern formwork (7) is intended to form a uniform texture or pattern on the surface of the concrete outer wall that is exposed after concrete pouring. For example, EPS (Expanded Polystyrene) may be used, and a release agent may be applied to the surface of the pattern formwork (7) to facilitate easy demolding after concrete pouring. At this time, the pattern formwork (7) may be installed in a non-processing manner without separately drilling tie holes that could impair the aesthetics of the surface of the exposed outer wall or cause surface defects. This allows the continuity and uniformity of the pattern to be maintained. That is, the pattern formwork (7) is placed in close contact with the outer formwork (5) or fixed through an attachment means, but is configured so that holes resulting from the penetration of tie bolts are not formed on the pattern surface. Accordingly, traces caused by tie holes or finishing defects do not occur even after concrete pouring and demolding, so the surface pattern of the exposed exterior wall is uniformly formed according to the design intent, and the quality of the exterior wall finish can be improved.

[0042] Next, as shown in FIGS. 1 and 5, reinforcing bars (8) for the outer wall are arranged (e.g., single reinforcement) (S4). In the area where the outer wall is formed, reinforcing bars (8) for the outer wall are arranged at intervals of, for example, 100 to 300 mm according to the designed structural conditions. At this time, since the outer wall is formed as a wall with a relatively thin thickness compared to the inner wall based on the middle insulation material (10) for the wall, the placement position and spacing of the reinforcing bars are precisely adjusted so as to ensure sufficient resistance to lateral pressure and flow occurring during the concrete pouring process. For example, the reinforcing bars (8) for the outer wall can be arranged to be staggered with the arrangement of tie holes to prevent interference with the tie holes formed in the Euroform applied as the outer formwork (5). Through this, even when the pattern formwork (7) is installed, the tie bolt fastening and the reinforcement bars (8) for the outer wall do not interfere with each other, thereby improving constructability and maintaining the continuity and consistency of the reinforcement bars (8) for the outer wall.

[0043] Next, as shown in FIGS. 1 and 6, a spacer (9) and an intermediate insulation material (10) for the wall are installed (S5). The spacer (9) is installed so that a predetermined spacing is stably maintained based on the direction in which the pattern formwork (7) is arranged. The spacer (9) is intended to prevent the position of the reinforcing bar (8) for the outer wall from shifting or becoming eccentric during the concrete pouring and compaction process, thereby ensuring that the surface of the outer wall formed by the pattern formwork (7) is uniformly formed to the designed quality. Such a spacer (9) may be made of a rod structure, for example, made of EPS material.

[0044] Afterward, a wall intermediate insulation material (10) is installed. The wall intermediate insulation material (10) may be made of a foamed material. For example, it may be formed from EPS material and may be shaped so that adjacent insulation materials can interlock and be joined together on the left and right sides. Accordingly, gaps or separations that may occur at the joints between insulation materials are suppressed, thereby ensuring stable continuity of the insulation layer. A groove may be formed in the wall intermediate insulation material (10) to allow the spacer (9) to be adhesively fixed, and the groove may be extended along the thickness direction of the wall intermediate insulation material (10) or arranged at regular intervals. During construction, the wall intermediate insulation material (10) is installed with the spacer (9) attached in advance using an adhesive means such as foam bond by utilizing the groove, thereby preventing the wall intermediate insulation material (10) from moving due to the flow and lateral pressure of the concrete mixture during the pouring process.

[0045] The spacer (9) is positioned vertically on the wall intermediate insulation material (10) to provide support resistance against the flow force and lateral pressure acting on the wall intermediate insulation material (10) during concrete pouring. Accordingly, the wall intermediate insulation material (10) can be stably maintained in the designed position, and deformation of the joints of the wall intermediate insulation material (10) or discontinuity of the insulation layer is prevented. This configuration can provide favorable conditions for maintaining the positional stability of the wall intermediate insulation material (10) even during the subsequent separate pouring process of the concrete mixture. The installation of the wall intermediate insulation material (10) utilizing the interlocking structure between the wall intermediate insulation materials (10) and the groove of the spacer (9) can ensure the continuity and positional stability of the wall intermediate insulation material (10) during construction.

[0046] Next, as shown in FIGS. 1 and 7, a support rod (11) is installed at the joint between the intermediate insulation materials (10) for the wall (inward direction of the joint of the intermediate insulation material (10) for the wall) (S6). After the installation of the intermediate insulation material (10) for the wall is completed, additional reinforcement work is performed around the joint formed by interlocking adjacent intermediate insulation materials (10) for the wall. At this time, the joint is a vulnerable section where cement paste separated from the concrete mixture during the concrete pouring process can flow in relatively easily. If the cement paste flows into the interior of the joint, the continuity of the insulation layer may be compromised, or the bonding state between the insulation materials may be weakened, leading to separation or damage. Accordingly, a support rod (11) is additionally installed along the joint of the intermediate insulation material (10) for the wall to physically block the joint while simultaneously performing structural reinforcement.

[0047] The support rod (11) can be made of, for example, EPS material, and can be arranged continuously along the length direction of the joint or at regular intervals, and can be fixed to the intermediate insulation material (10) for the wall using an adhesive means such as foam bond. Through this, it is possible to fundamentally prevent cement paste from flowing into the interior of the joint due to the flow and lateral pressure of the concrete mixture generated during the pouring process. In addition, the support rod (11) installed at the joint strengthens the bonding force between the intermediate insulation materials (10) for the wall, thereby preventing the joint from separating or the intermediate insulation material (10) for the wall from being locally deformed during the concrete pouring and compaction process. Accordingly, the continuity of the insulation layer can be stably maintained even at the joint of the intermediate insulation material (10) for the wall, and the possibility of thermal bridges occurring in the intermediate insulation structure can be effectively reduced.

[0048] Next, as shown in FIGS. 1 and FIGS. 8, a non-combustible reinforcing material (12) is installed around the opening box (6) for the window (S7). After the reinforcement of the joints of the intermediate insulation material (10) for the wall is completed, a non-combustible reinforcing process is performed in the surrounding area of ​​the opening box (6) for the window, taking into account the possibility of fire spread and structural deformation due to high temperature. For example, a non-combustible reinforcing material (12) is installed around the opening box (6) for the window to be installed using a high-compression mineral wool board made of a non-combustible material.

[0049] The non-combustible reinforcing material (12) has the characteristic of not burning or suppressing the spread of combustion when a fire occurs, thereby supplementing fire resistance performance in relatively vulnerable areas such as window openings. In a middle insulation structure, due to the characteristic that the middle insulation material (10) for the wall is embedded inside the wall, the area around the window opening forms a composite region where the middle insulation material (10) for the wall and the structure intersect, and this area may be relatively vulnerable to deformation caused by fire and heat. Accordingly, by applying a high-compression mineral wool board around the window opening, the vulnerable area due to the difference in material characteristics between the section where the middle insulation material (10) for the wall is applied and the window opening can be structurally reinforced, and the heat transfer path in case of fire can be blocked to suppress flame spread and thermal deformation.

[0050] Next, as shown in FIGS. 1 and FIG. 9, tie bolts (13) are installed (S8). Tie bolts (13) made of glass fiber reinforced plastic (GFRP) are installed to structurally connect the inner and outer walls and to stably maintain the formwork spacing. Based on the position of the tie bolt holes pre-formed in the outer formwork (5), a drilling device such as a drill is used to perform a drilling operation to penetrate the outer formwork (5), the pattern formwork (7), and the intermediate insulation material (10) for the wall in a straight line. At this time, the drilling is performed precisely based on the arrangement of tie holes formed in the outer formwork (5) so that deviations in the drilling position are minimized. Afterward, tie bolts (13) are inserted through the drilled holes to prepare the outer formwork (5) and the inner formwork (16, see FIG. 12) to be installed later so that they can be mutually connected.

[0051] The tie bolt (13) provides a structural connection between the inner and outer walls and also serves to prevent deformation of the spacing between the formwork (5, 16) due to lateral pressure generated during the concrete pouring process. In particular, in a middle insulation structure, since the middle insulation material (10) for the wall is embedded inside the wall, if the positional precision of the tie bolt (13) is not secured, there is a risk of local damage or displacement of the middle insulation material (10) for the wall. Accordingly, the position of the penetration hole is managed with a minimum deviation so that the tie bolt (13) stably penetrates the insulation material (10) without hindering the continuity of the insulation layer. Such penetration hole and insertion process of the tie bolt (13) stably maintains the spacing between the formwork during the subsequent concrete pouring process.

[0052] Next, as shown in FIGS. 1 and FIGS. 10, reinforcing bars (14) for the inner wall are arranged (S9). Since the inner wall (internal load-bearing wall structure) requires relatively greater structural performance compared to the outer wall based on the middle insulation material (10) for the wall, reinforcing bars can be arranged in a double-reinforcement structure according to design conditions. At this time, the reinforcing bars (14) for the inner wall are installed by adjusting the placement position so as not to interfere with the pre-installed tie bolts (13), thereby ensuring that the tie bolt (13) fastening function and the reinforcing bar placement are maintained independently of each other. In addition, considering the support of the support rod (11) placed to secure the positional stability of the middle insulation material (10) for the wall, the reinforcing bars (14) for the inner wall can be arranged so that the horizontal reinforcing bars are located relatively inward. Accordingly, during the concrete pouring process, the flow force and lateral pressure of the concrete acting on the wall intermediate insulation material (10) and the support rod (11) are dispersed by the inner wall reinforcing bar (14), thereby effectively preventing movement or deformation of the wall intermediate insulation material (10). In addition, spacers may be additionally installed to stably maintain the designed thickness of the inner wall. At this time, the spacers may be configured as square (4-sided) spacers that have a wide contact cross-sectional area with the inner wall reinforcing bar (14) and can provide structurally stable support. Through this, positional change or eccentricity of the inner wall reinforcing bar (14) can be prevented during the concrete pouring and compaction process.

[0053] Next, as shown in FIGS. 1 and FIGS. 11, a reinforcement process is performed to prevent structural sagging around the window opening (S10). Since the structure supported from below is limited around the window opening, particularly the upper part, there is a risk of sagging or local deformation occurring during the concrete pouring or curing process, additional reinforcing tie bolts (15) are installed diagonally. For example, the reinforcing tie bolts (15) are positioned to extend from the upper part of the window opening to the inner wall area where reinforcing bars are arranged, and then the reinforcing bars are connected using binding wires from the inside to strengthen the tensile resistance against the load acting on the upper part of the window opening. If necessary, a reinforcing head can be attached to the end of the reinforcing tie bolt (15) to improve the bonding strength between the reinforcing tie bolt (15), the concrete, and the reinforcing bars (14) for the inner wall. In addition, since the area around the window opening is prone to structural weakness, double reinforcement is applied by arranging inner wall reinforcing bars (14) diagonally at the four corners (4 corners) of the window opening to alleviate stress concentration around the window opening and ensure structural stability. This reinforcement configuration for the upper and surrounding areas of the window opening compensates for structural weakness caused by the window opening when constructing a double-insulated exposed concrete wall, and contributes to maintaining the shape of the opening stably throughout the concrete pouring and curing process.

[0054] Next, as shown in FIGS. 1 and FIGS. 12, an inner formwork (16) is installed (S11). The inner formwork (16) is formed as a transparent formwork. For example, a transparent board made of PETG (Polyethylene Terephthalate Glycol-modified) material can be used. The inner formwork (16) is installed based on a square (horizontal beam) placed on the foundation floor surface (foundation concrete mat (4)). The square serves to ensure positional accuracy of the inner formwork (16) by providing the installation position and vertical and horizontal alignment standards for the inner formwork (16). The inner formwork (16) can be formed with a relatively smooth exposed surface in contact with the concrete, so it can be used as the finished surface of the inner exposed concrete without undergoing a separate finishing process after demolding. In addition, due to the transparent material properties, it is possible to visually check in real time whether voids (voids) occur on the inside during the concrete pouring process and whether the concrete is unfilled at the bottom of the window opening, thereby enabling immediate response to construction defects that may occur during pouring. Furthermore, when installing the inner formwork (16), the alignment and fastening status of the formwork surfaces are checked to ensure that no leakage or deformation occurs during the concrete pouring process. Through this, the shape accuracy of the inner wall and the quality of the exposed concrete finish can be reliably secured.

[0055] Next, as shown in FIGS. 1 and FIGS. 13, the process of reinforcing the inner formwork (16) and fastening the tie bolt (13) is performed (S12). For example, to ensure the structural stability of the inner formwork (16), steel pipes (17) are installed in the horizontal and vertical directions for reinforcement, and a nut (18) is assembled and fastened to the inner end of the tie bolt (13) inserted in the previous process. At this time, since deformation is expected where the formwork is pushed toward the outer formwork (5) due to lateral pressure generated during the concrete pouring process, the fastening of the tie bolt (13) can be performed by adjusting it to be tilted preemptively, for example, by about 30 to 50 mm, taking into account the displacement toward the outside. That is, by setting the initial fastening state by reflecting the expected direction of deformation in advance, the outward deformation of the formwork during concrete pouring can be suppressed, and the risk of deformation or displacement of the intermediate insulation material (10) for the wall can be reduced accordingly. This method of inner steel pipe reinforcement and tie bolt fastening contributes to maintaining the shape stability of the formwork throughout the concrete pouring and curing process, and ensures that the exposed concrete walls with intermediate insulation are constructed at the designed location and shape.

[0056] Next, as shown in FIGS. 1 and FIGS. 14, a protective process is performed on the upper part of the intermediate insulation material (10) for the wall (S13). For example, a protective cover (18) is cut to a width of approximately 100 to 5000 mm and installed over the upper part of the intermediate insulation material (10) for the wall to prevent cement paste that may occur during the concrete pouring process from adhering to the upper part of the intermediate insulation material (10) for the wall or flowing into the joints of the intermediate insulation material (10). At this time, for example, vinyl for a greenhouse can be used for the protective cover (18).

[0057] Next, as shown in FIGS. 1 and FIGS. 15, a process of installing an insulation fixing bracket (20) to prevent the intermediate insulation material (10) for the wall from shifting position is performed (S14). Since there is a risk that the intermediate insulation material (10) for the wall may move forward and backward or tilt in the left and right directions due to the movement of the separation pouring machine, the flow of the concrete mixture, or the vibrating operation during the concrete separation pouring process, an insulation fixing bracket (20) is installed to prevent this. The insulation fixing bracket (20) is configured to be fixed to both sides of the outer formwork (5) and the inner formwork (16), respectively, and its central part is formed in a bent shape so as to grip the intermediate insulation material (10) for the wall to a depth of, for example, about 30 to 100 mm or more. Accordingly, the insulation fixing member (20) can effectively prevent the intermediate insulation (10) for the wall from shifting or tilting by providing mechanical restraint against the fluidity and vibration acting on the intermediate insulation (10) for the wall during the concrete pouring and compaction process. The installation of such an insulation fixing member (20) contributes to stably securing the continuity of the insulation layer and the quality of the wall by ensuring that the intermediate insulation (10) for the wall is stably maintained in the designed position during the construction of an exposed concrete wall with intermediate insulation.

[0058] Next, as shown in FIGS. 1 and FIGS. 16, a fluorescent rod (21) for checking the concrete pouring height is installed (S15). Since it is difficult to directly check the concrete pouring height when pouring concrete, a fluorescent rod with a different color for each height is installed on the side of the pattern formwork (7), for example, so that the pouring height can be visually checked. For example, the fluorescent rod (21) is configured so that the color is distinguished in approximately 1.2m increments so that the pouring height can be intuitively recognized.

[0059] Next, as shown in FIGS. 1 and 17, the concrete mixture supplied through the transfer pipe (30) is supplied separately to the inner and outer wall spaces using the separate discharge pipe (22) and the separate pouring machine (23) (S16). The separate discharge pipe (22) is branched into two to supply the concrete mixture to the inner wall space and the outer wall space, respectively, and can be formed with the same diameter to prevent clogging or uneven flow during the discharge process, taking into account the maximum size of the aggregate contained in the concrete mixture (e.g., about 25 mm). This allows the concrete mixture to flow smoothly and enables uniform pouring. The separate pouring machine (23) controls the amount of pouring by controlling the flow rate of the discharge pipe among the separate discharge pipes (22) that are discharged into the outer wall space, taking into account the outer wall which is formed with a relatively thin thickness.

[0060] The separation pouring machine (23) is configured to selectively control the flow rate of the concrete mixture discharged into the outer wall space. To this end, the separation pouring machine (23) includes a guide coupler (23a) installed in the outer wall discharge pipe (22) that discharges the concrete mixture into the outer wall space. The guide coupler (23a) is coupled to one side of the outer wall discharge pipe and serves to guide the discharge volume control panel (23b), described later, so that it can be stably inserted in a direction perpendicular to the axis of the outer wall discharge pipe. The discharge volume control panel (23b), which is inserted into the outer wall discharge pipe through the guide coupler (23a), is installed to partially or completely block the discharge path of the outer wall discharge pipe. That is, the discharge volume control (23b) can control the discharge volume of the concrete mixture supplied to the outer wall space in stages by adjusting the cross-sectional area of ​​the flow path of the concrete mixture passing through the discharge pipe for the outer wall according to the insertion depth. Accordingly, precise flow rate control is possible by considering the wall thickness of the outer wall space, the pouring height, and the positional stability of the intermediate insulation material (10) for the wall. In addition, a movable rod (23c) is connected to one side of the discharge volume control (23b), and the movable rod (23c) is configured to operate the insertion and withdrawal operation of the discharge volume control (23b) by being operated directly from the outside or through a separate device by an operator. By adjusting the position of the discharge volume control (23b) through the movable rod (23c), the discharge volume of the discharge pipe for the outer wall can be adjusted in real time even during concrete pouring, allowing for active response to changes in pouring conditions. Through such a separate pouring machine (23), the flow rate of the concrete mixture supplied to the inner and outer wall spaces can be controlled independently of each other, and in particular, by mitigating the flow force and lateral pressure of the concrete acting on the outer wall space, the displacement or deformation of the intermediate insulation material (10) for the wall can be suppressed and the quality of the exposed concrete wall with intermediate insulation can be improved.

[0061] As described above, the technical concept of the present invention has been specifically described in preferred embodiments; however, the aforementioned preferred embodiments are for illustrative purposes only and are not intended to be limiting. As such, a person skilled in the art will understand that various embodiments are possible within the scope of the technical concept of the present invention through the combination of embodiments thereof. Explanation of the symbols

[0062] 1 : Foundation 2 : Foundation floor insulation 3 : Foundation intermediate insulation 4 : Foundation concrete mat 5: Outer formwork 6: Window and door opening box 7 : Pattern formwork 8 : Reinforcement for exterior walls 9 : Spacer 10 : Intermediate insulation for walls 11: Support bar 12: Non-combustible reinforcement 13: Tie bolt 14: Reinforcement for inner wall 15: Reinforcement tie bolt 16: Inner formwork (transparent formwork) 17 : Steel pipe 18 : Nut (tie bolt) 19: Protective cover 20: Insulation holder 21: Fluorescent rod 22: Separating discharge tube 23: Separating pouring machine 23a: Guide coupler 23b: Discharge volume control panel 23c: Moving rod

Claims

Claim 1 (a) a process of constructing the foundation; (b) a process of installing an outer formwork on the foundation; (c) a process of installing a window / door opening box on the outer formwork; (d) a process of installing a pattern formwork on the inner surface of the outer formwork; (e) a process of arranging reinforcing bars for the outer wall inside the pattern formwork; (f) a process of installing an intermediate insulation material for the wall inside the reinforcing bars for the outer wall; (g) a process of installing tie bolts penetrating the outer formwork, the pattern formwork, and the intermediate insulation material; (h) a process of arranging reinforcing bars for the inner wall inside the intermediate insulation material; (i) a process of installing an inner formwork made of a transparent board inside the reinforcing bars for the inner wall; (j) a process of fastening and fixing the tie bolts penetrating the inner formwork using nuts; and (k) a process of controlling the discharge flow rate of a concrete mixture supplied through a separate discharge pipe coupled to a transfer pipe connected to the discharge part of a pump truck using a separate pouring machine, and thereby separately supplying and pouring the concrete mixture into an inner wall space and an outer wall space, respectively; and further comprising, between process (f) and process (g), a process of installing a support rod at the joint between the intermediate insulation materials for the wall and a process of installing a non-combustible reinforcing material around the opening box for the window, wherein the separate pouring machine is installed in the outer wall discharge pipe among the separate discharge pipes that discharges the concrete mixture into the outer wall space and controls the flow rate of the concrete mixture supplied to the outer wall space, and the support rod is installed along the joint between the intermediate insulation materials for the wall to prevent the joint from separating or the intermediate insulation materials for the wall from being locally deformed during the pouring and compaction process of the concrete mixture, a method of constructing an exposed concrete wall system using a transparent formwork and a separate pouring machine. Claim 2 A method for constructing an exposed concrete wall system with intermediate insulation using a transparent formwork and a separate pouring machine, wherein the process (a) comprises: a process of horizontally installing a passive type foundation floor insulation on the upper surface of the foundation; a process of vertically installing a foundation intermediate insulation on the side of the foundation; and a process of forming a foundation concrete mat on the upper surface of the foundation floor insulation, wherein the foundation intermediate insulation is installed extending higher than the upper surface of the foundation concrete mat. Claim 3 A method for constructing an exposed concrete wall system with intermediate insulation using a transparent formwork and a separate casting machine, wherein, in claim 1, between process (e) and process (f), the method further includes the step of installing a spacer on the reinforcing bar for the outer wall, and in process (f), the spacer is fitted into and joined to a groove formed in the intermediate insulation material for the wall. Claim 4 delete Claim 5 delete Claim 6 A method for constructing an exposed concrete wall system with intermediate insulation using a transparent formwork and a separate pouring machine, wherein, in the first step between the above (j) and above (k), the upper part of the intermediate insulation material for the wall is protected with a protective cover; the outer formwork and the inner formwork are fixed using an insulation material fixing bracket; and a marking member for checking the concrete pouring height is installed on one side of the pattern formwork. Claim 7 In claim 1, the separation discharge pipe is formed into two branches to supply the concrete mixture supplied from the transfer pipe separately to the inner wall space and the outer wall space, respectively, and the separation discharge pipe is formed with the same diameter. A method of constructing a mid-insulation exposed concrete wall system using a transparent formwork and a separation pouring machine. Claim 8 delete Claim 9 In claim 7, the separation casting machine comprises: a guide coupler coupled to the discharge pipe for the outer wall; a discharge volume control panel inserted perpendicular to the axis of the discharge pipe for the outer wall through the guide coupler to partially or completely block the discharge path; and a movable rod connected to the discharge volume control panel to operate the insertion and withdrawal of the discharge volume control panel; a method of constructing an exposed concrete wall system with intermediate insulation using a transparent formwork and a separation casting machine. Claim 10 An exposed concrete wall system with intermediate insulation constructed through the construction method of an exposed concrete wall system with intermediate insulation using a transparent formwork and a separate casting machine according to any one of Claims 1, 2, 3, 6, 7, or 9.

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