KR100806253B1 - Water proof execution method of the construction structure and the waterproof structure - Google Patents

Abstract

A rooftop waterproofing method of a building structure and a waterproof structure formed by the method are provided to minimize cracks or damage to a slope layer by making a waterproof structure correspond to expansion and contraction of a building structure caused by external factors such as a change of temperature, to reduce the separation of a joint between waterproof sheets by coupling a waterproof coating layer to a cutting groove, to exhaust water and to correspond to expansion by air by letting air in and out through air ventilation pipes, to cut down the cost required for maintenance by repairing a slope layer, a waterproof sheet or a waterproof coating layer partially, to contribute to environmental preservation by reducing the quantity of waste materials, and to heighten work efficiency and to shorten a period of construction by simplifying construction work. A rooftop waterproofing method of a building structure comprises the steps of: forming cutting grooves(10) in the lattice shape all over the top of a slope layer(G) formed by placing mortar or concrete to the appointed thickness to protect the rooftop of a structure or various slabs using a cutter; forming many insertion grooves(20) to be perpendicular to the cutting grooves formed on the slope layer; installing an air ventilation pipe(30) to the insertion groove to make two ends of the air ventilation pipe upward in the U-shape and placing silicon or low viscosity urethane on the air ventilation pipe to be fixed strongly; applying adhesives on the top of the slope layer where the cutting groove and the lower edge of a waterproof sheet are located, and attaching a waterproof sheet(40) tightly; forming an air vent(50) on the slope layer to exhaust moisture or air between the slope layer and the waterproof sheet; forming a waterproof coating layer(60) to unify with the slope layer strongly by applying liquefied urethane on the upper part of the waterproof sheet to the appointed thickness and filling up the cutting grooves with urethane to waterproof the rooftop and slabs to prevent a water leakage in a structure; and forming a protective color layer by applying paints or pigments on the upper part of the waterproof coating layer to protect the waterproof coating layer from ultraviolet rays or rainwater, so that a waterproof structure formed by the method comprises a cutting groove and an insertion groove, an air ventilation pipe, a waterproof sheet, an air vent, a waterproof coating layer and a protective color layer.

Description

Water proof execution method of the construction structure and the waterproof structure

The present invention relates to a waterproof method and a waterproof structure that is constructed on the roof of the construction structure or to prevent leakage to the various slabs, more specifically to protect the roof or slab of the construction structure and to facilitate drainage A cutting groove having a predetermined interval and depth is formed in a lattice shape on the upper surface of the gradient layer to be cast with a predetermined thickness, and a plurality of insertion grooves are formed at a predetermined position on the upper surface of the gradient layer on which the cutting groove is formed. Attach the waterproof sheet to the gradient layer between the cutting grooves in a lattice form, install a plurality of degassing holes at a predetermined position of the gradient layer, and then apply urethane to the entire upper portion of the waterproof sheet to form a coating waterproof layer and a coloring protective layer. It is further formed to maximize the responsiveness to contraction, expansion, and cracking of construction structures occurring in places with severe climate change. It is related to the waterproofing method and the waterproof structure of the construction structure so as to lengthen the life of the building as well as the waterproofing layer, and to minimize the work process to shorten the construction period and improve the work efficiency.

In general, construction structures such as bridges or buildings are made of concrete and reinforcing bars, and various interior and exterior materials are installed inside and outside of the building. Although the waterproof layer was formed to prevent the occurrence of such a waterproof layer, water leakage occurred due to cracks on the roof layer or the slab as well as the waterproof layer due to repeated contraction and expansion of the structure due to temperature change. It penetrates into the interior and shortens the life of the whole structure.

In order to solve such a problem, in recent years, the coating waterproofing material is not directly applied to the gradient layer formed on the roof of the structure or the upper part of the slab, but the waterproof sheet such as asphalt series or PVC is floated from the top of the gradient layer in between. A composite that joins the connecting portions of the sheets in a spaced or overlapping manner as shown in FIG. 1 and installs the necessary number of degassed holes (not shown) per predetermined area and then forms the coating layer 2 thereon. Since the waterproofing method has been widely used, such a composite waterproofing method does not consider the behavior of the gradient layer (G) existing at the bottom of the waterproofing layer at all, and the surface adhesion with the gradient layer is only performed at each connection portion of the waterproofing sheet (1). As a result, a continuous strong adhesive force was required at the connection portion of the waterproof sheet 1, that is, the joint portion.

However, such a composite waterproofing method does not have the function of suppressing cracking during shrinkage and elastically absorbing expansion during expansion in response to the deformation of the gradient layer (G). In this case, the weakest waterproof sheet (1) is separated from the gradient layer (G) at the connection part, and it is lifted or cracked and torn.

In addition, if the waterproof sheet 1 is constructed in a state where foreign matter remains on the upper part of the gradient layer G where the connection part is located, the waterproof sheet 1 is lifted up or cracks are generated. When rainwater penetrates through the crack of the waterproof sheet 1 connection part, the surface adhesive force of the adjacent waterproof sheet 1 connection part is also degraded prematurely, thereby distinguishing the joint function and the area connecting the waterproof sheet 1 to each other. The function is lost, and rainwater freely moves between the waterproofing layer and the gradient layer (G), soaking into the gradient layer (G) and acting as a cause of leakage, as well as being unable to pinpoint the location of the leakage. Due to the repetition of water leakage, cracks and damages of the mortar or concrete of the gradient layer are intensified, and eventually, during the renovation work, the entire gradient layer and the waterproof layer are removed and the waterproofing work is performed again. It was so weighted cost burden it was causing serious environmental problems due to the increase in waste.

In addition, the rooftop waterproofing method and the waterproof structure of the construction structure installed as described above should be provided with a plurality of degassing holes in each waterproof sheet so as not to expand between the gradient layer and the waterproof layer due to air or moisture. For this reason, a relatively small number of degassing holes is installed at an arbitrary position of the waterproof sheet 1, that is, one degassing hole is installed per predetermined area without installing the degassing holes in the partitioned waterproof sheet 1, respectively. The problem of not completely discharging the moisture occurred, resulting in shortening the life of the waterproof sheet (1) as well as the coating layer (2).

Meanwhile, the waterproof sheet 1 used in the related art is mainly manufactured using materials such as asphalt or PVC, and physical changes such as expansion and expansion due to temperature change with the urethane forming the coating layer 2 There is a difference in physical properties. After the urethane is applied on the waterproof sheet 1, the waterproof sheet 1 is bent in one direction. It is pointed out as a problem that the stress caused by the deformation of the waterproof sheet (1) is continuously acting on the waterproof sheet (1) connection portion, which also lowers the surface adhesion of the waterproof sheet (1) connection portion.

In addition, when the waterproof sheet 1 and the coating layer 2 are damaged, water leakage occurs, and in order to repair this, in the prior art, in the state where all the upper portions of the gradient layer G are removed, the waterproof layer is waterproofed on the upper portion of the gradient layer G again. Although the repair of the sheet 1 and the coating layer 2 and the like has been performed, a lot of waste is generated in this case, and it has been pointed out as the main culprit that worsens the burden of treatment costs and environmental pollution.

Therefore, in order to solve the above problems, the present invention grating the cutting groove at a predetermined interval on the upper surface of the gradient layer formed by pouring mortar or concrete of a predetermined thickness in order to protect the roof or slabs of the construction structure and to facilitate drainage. And a plurality of insertion grooves are formed at a predetermined depth to form a cross shape at a predetermined position of the cutting groove, so that both ends of the air communication tube face upwards, so that the air according to the grid section is smoothly communicated. The required number of degassing holes per predetermined area is installed between the cutting grooves in a state of covering a predetermined size, and the urethane is filled in the cutting grooves, and at the same time, the urethane is coated on the entire waterproof sheet to form a waterproof layer. Afterwards, by forming a coloring protective layer on top of it, The waterproof structure responds smoothly to the expansion and contraction of the construction structure due to the minimization of cracks and breakage of the gradient layer, and the waterproofing layer filled in the cutting groove is firmly bound to lift each connection of the waterproof sheet installed continuously In addition to significantly reducing the phenomenon, the grid compartment in which the waterproof sheet is installed is interconnected by the air communication tube to allow air to communicate, thereby facilitating the discharge of moisture and responding to the expansion caused by air. In case of breakage of waterproof sheet and coating waterproof layer, it is possible to partially repair each compartment to reduce the cost of maintenance, and greatly reduce the amount of waste that needs to be dismantled and treated during repair work, contributing to environmental preservation and simplifying construction. The construction zone is designed to improve work efficiency and shorten the construction period. The purpose has been made to provide water roof waterproofing method and waterproof.

In order to achieve the above object, the present invention provides a waterproofing layer in a gradient layer that is poured to a certain thickness in order to protect the roof and slabs of the construction structure in the waterproof method to prevent water leakage into the structure, the gradient layer A first step of cutting the cutting groove of a predetermined depth to form a grid using a cutter on the entire upper surface of the; A second step of cutting and forming a plurality of insertion grooves each having a predetermined depth so as to have a cross shape at a predetermined position of the cutting groove formed by the first step using a cutter; The third step of inserting the air communication tube provided with a predetermined length in the insertion groove formed by the second step, the both ends are upward so as to fill the bent central portion of silicone or low viscosity urethane to be firmly fixed. ; A fourth step of applying an adhesive to the upper surface of the gradient layer on which the cutting edge of the lattice-shaped cutting groove formed by the first step and the lower edge of the waterproof sheet are located, and then covering the entire waterproof layer tightly with the waterproof sheet provided to a predetermined standard. Steps; A fifth step of installing degassing holes per predetermined area to discharge moisture or air in the waterproof sheet installed by the fourth step; A sixth step of filling a urethane into the cutting groove formed by the first step and simultaneously forming urethane on the entire upper portion of the waterproof sheet to form a coating waterproof layer to be integrated with the gradient layer; And a seventh step of forming a coloring protective layer by applying a coating material or a pigment to a predetermined thickness on the upper portion of the waterproofing layer formed by the sixth step.

In addition, the present invention in the waterproof structure to form a waterproof layer on the upper surface of the gradient layer to be cast to a certain thickness in order to protect the roof and the slab of the construction structure so that no leakage occurs inside the structure, a predetermined depth throughout the gradient layer The cutting grooves are formed in a lattice shape, and a plurality of insertion grooves are formed at predetermined positions of the cutting grooves so that both ends of the air communication tube are upwardly fixed to the insertion grooves, thereby being firmly fixed by silicone or low viscosity urethane. Then, the watertight sheet provided to a predetermined standard is laminated between the cutting grooves, and a plurality of ventilation holes are respectively installed at a predetermined position of the watertight sheet so as to be exposed upward, and the urging is filled in the cutting grooves. Apply urethane to the entire upper part of the waterproof sheet to a certain thickness to bind the coating film waterproof layer to be integral with the gradient layer. In order to protect the base film waterproof layer, it is another feature that the color protective layer is applied to a predetermined thickness over the entire upper portion thereof.

As described above, by providing a rooftop waterproofing method and a waterproof structure of the construction structure of the present invention, the waterproof structure smoothly corresponds to the expansion and contraction of the construction structure due to external factors such as changes in temperature, so that the crack or damage of the gradient layer Minimizing, and the coating film waterproof layer filled in the cutting groove is firmly bound to significantly reduce the lifting phenomenon of each connection portion of the waterproof sheet is installed continuously, as well as the grid compartment in which the waterproof sheet is installed by the air communication tube It is connected to each other so that the air can be connected to facilitate the discharge of moisture and to cope with the expansion caused by the air, and in addition to the partial maintenance in the case of breakage of the gradient layer, the waterproof sheet and the coating waterproof layer, the cost of maintenance To reduce waste and significantly reduce the amount of waste to be disposed of during renovation To contribute to environmental preservation as well as to useful inventions that may be due to simplification of the construction efficiency and shortened construction period of work at the same time.

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

2 is a block diagram showing a construction process according to the present invention, Figure 3 is a plan view showing a waterproof structure according to the present invention, Figure 4 shows a waterproof structure according to the present invention 5 is a bottom perspective view showing a waterproof sheet which is a main part of the present invention, and FIG. 6 is an enlarged cross-sectional view of the waterproof sheet of the present invention.

As shown, the rooftop waterproofing method of the construction structure of the present invention is largely classified into the first step to the seventh step (S10 to S70), and the waterproof structure formed by the step-by-step process is the cutting groove 10 and the insertion groove ( 20), the air communication tube 30, the waterproof sheet 40, the degassing holes 50, the coating film waterproof layer 60 and the colored protective layer 70 is large.

The first step (S10) is to form a cutting groove 10 in the entire upper surface of the gradient layer (G) formed by pouring mortar or concrete to a certain thickness to protect the roof or various slabs of the structure, asphalt or concrete Forming a cutting groove 10 of a predetermined depth so as to form a grid using a cutter used to cut the, the interval between the cutting grooves is about 1 ~ 2 cm larger than the area of the waterproof sheet 40 is provided It is formed to an area, the depth is preferably about 3 ~ 5cm, in some cases in consideration of the shrinkage, expansion of the mortar or concrete of the gradient layer (G), the width and length direction of the waterproof sheet (40) Cutting groove 10 can be formed as if cutting the entire thickness of the gradient layer (G) in the required position, and after the cutting groove 10 is formed, the dust penetrating into the cutting groove 10 during cutting Air gun (not shown) French will be inside.

The second step (S20) is to form the insertion groove 20 to be perpendicular to the cutting groove 10 formed in the gradient layer (G) by the first step (S10), that is, cross-shaped, the cutter Using a plurality of insertion grooves 20 by cutting at right angles to a predetermined position of the cutting groove 10 formed in a lattice shape, the width is about 5mm, the depth is preferably about 3 ~ 5cm. .

The third step (S30) is to install the air communication tube 30 in the insertion groove 20 formed in the second step (S20) to allow the waterproof sheet 40 to communicate with each other, the air provided in a predetermined length The communication tube 30 is inserted into the insertion groove 20, and both ends of the air communication tube 30 are upwardly, that is, deeply and closely inserted to the bottom of the insertion groove 20 so as to have a "U" shape and then gradient Filling the silicone or low-viscosity urethane over the air communication tube 30 to the height of the layer (G) is to be fixed and installed firmly.

The fourth step S40 includes a waterproof sheet 40 having an area of about 1 to 2 cm smaller than the area between the cutting grooves 10 formed by the first step S10 of the gradient layer G. Covering and stacking the entire upper surface, first suitable for the waterproof sheet 40 in a width of about 5 cm to the upper surface of the gradient layer (G), the lower edge of the cutting groove 10 and the waterproof sheet 40 is located. Each of the adhesive is applied, and then the waterproof sheet 40 is to be closely attached.

The fifth step (S50) is a degassing hole 50 to the upper proper position of the gradient layer, that is, 50 to 100㎡ 2 so as to discharge moisture or air between the gradient layer (G) and the waterproof sheet (40) By installing one degassing hole 50, first cut into a "+" shape in the waterproof sheet of the installation position to form a cutting groove, and then inserting and fixing the lower end of the degassing hole 50, the cutting groove and the The pores 50 are in contact with each other by reinforcing the connecting portion of the glass fiber and then apply a high viscosity urethane to be installed tightly.

The sixth step (S60) is to form a coating film waterproof layer 60 by applying a liquid urethane to a predetermined thickness, while coating so that the entire thickness of the upper portion of the waterproof sheet 40 to about 1.5mm ~ 2.5mm By filling the cutting groove 10 with urethane to form a waterproof layer 60 so as to be tightly integrated with the gradient layer (G) to waterproof the roof and slabs so as not to leak into the structure.

The seventh step (S70) is to apply a paint or pigment on top of the waterproof film 60 formed in the sixth step (S60) to form a colored protective layer 70 of a predetermined thickness to the waterproof film 60 It is possible to protect the coating waterproof layer 60 by preventing direct contact with ultraviolet rays or rain. In some cases, after forming the coating waterproof layer 60 in the sixth step (S60), the silica sand is applied to the upper part and slips. It is desirable to be able to prevent.

Thus, the cutting groove 10 of the waterproof structure made by a method for waterproofing the gradient layer (G) poured to a certain thickness on the roof of the construction structure or the slab to a predetermined thickness of about 5 the entire upper surface of the gradient layer (G). Formed to form a lattice in a width of about ~ 8㎜ and a depth of about 3 ~ 5㎝ to penetrate the liquid urethane so that the coating layer 60 is firmly bound to the gradient layer (G) to the gradient layer (G). By elastically responding to the contraction and expansion of the) will be able to prevent the lifting or cracking of the connection portion of the waterproof sheet (40).

The insertion groove 20 is to be inserted and seated in the air communication tube 30, it is formed so as to have a cross shape at a predetermined position of the cutting groove 10, the width and depth is similar to the cutting groove 10 What is necessary is just to form a large number using a cutter.

The air communication tube 30 is formed of a synthetic resin or a metal material to be provided in a predetermined length, and inserted into the insertion groove 20 to have a "U" shape. What is necessary is to discharge the air or moisture which exist in each waterproof sheet 40 through the degassing hole 50 installed in a predetermined position.

The waterproof sheet 40 can be manufactured using various materials to be integrated with the waterproof layer 60. For example, the waterproof sheet 40 has a width of about 1 to 1.5m and a length of about 1.5 to about 1.5. On one surface of the nonwoven fabric 42 having an area of about 2 m, an adhesive layer 44 is formed of synthetic rubber in a vulcanized state in which formulation is adjusted to have elasticity similar to that of the coating film waterproof layer 60, and the bottom surface of the adhesive layer 44 is formed. The length of one side is about 2 cm, the height is about 0.5 to 1.5 mm rectangular projections 46 are formed at regular intervals of 2 to 5 mm intervals on all sides to withstand the load of the upper portion at the same time between the projections 46 The air can be smoothly communicated with each other, through the inlet hole 48 having a diameter of about 5 to 10 mm in the center of each of the projections, the liquid urethane is introduced to be closely adhered to the gradient layer (G). You can do that.

As another example, as shown in FIG. 6, the adhesive layer 44 of the waterproof sheet 40 is formed of a synthetic rubber in a non-vulcanized state in which the mixing is adjusted to have a similar elasticity to that of the waterproof layer 60. The width is about 1.0 to 1.5 m, the length is about 18 to 25 m, and the thickness is about 1 to 2 mm in the form of a roll to be stored. The bottom is formed flat and the bottom of the adhesive layer 44 is protected. The protective film (P) may be attached so that the insulating layer and the protective film (P) are installed on the gradient layer (G) without removing the protective film (P). The non-insulating method, which is closely adhered to the gradient layer G, may be selectively used according to the surrounding environment.

Such two types of waterproof sheet 40 can be selectively used according to the conditions of the site, for example, a large number of projections (46) formed on the bottom surface when the usual weather around the site is windy and the temperature change is severe. The waterproof sheet 40 through which the inlet hole 48 is perforated in the center is suitable, and in the structure of the region where rain often falls suddenly, it is preferable to use the waterproof sheet 40 having flat bottom without protrusions and inlet holes.

The degassing hole 50 is to discharge moisture or air between the gradient layer (G) and the waterproof sheet (40), and is provided in the form of a pipe with a hollow inside to be fixed and installed on the upper surface of the gradient layer (G). To be exposed to the upper portion of the waterproof sheet 40, a plurality of degassing holes 50 are to be installed at appropriate positions, respectively.

The coating film waterproof layer 60 is formed by applying a liquid urethane to the entire upper surface of the gradient layer (G) to a predetermined thickness, at the same time injection and coating on the cutting groove 10 and the waterproof sheet 40 at the time of urethane coating Since it is firmly bound to the gradient layer (G) integrally, it will be able to elastically respond to the expansion and contraction action of the structure, thereby preventing damage and preserving the waterproofing function for a long time.

The coloring protective layer 70 is to protect the coating waterproof layer 60 from ultraviolet rays and to extend the life. The coloring protective layer 70 may be hardened by applying a pigment or a paint having a coloring effect to the upper part of the coating waterproof layer 60 as a whole. will be.

On the other hand, Figures 7 and 8 relates to a method of performing a rooftop waterproofing with the existing waterproof layer as it is installed in the rooftop gradient layer (G) by the existing composite waterproofing method, but when the water leak occurs repair work First, the first step of forming the cutting groove 10 to form a grid portion of the connection portion of the existing waterproof sheet (1) using a cutter without removing the existing waterproof sheet (1) and the coating layer (2) ( S10); A second step S20 of cutting a plurality of insertion grooves 20 having a predetermined depth so as to form a cross shape using a cutter at a predetermined position of the cutting groove 10 formed by the first step S10; ; Insert the air communication tube 30 provided with a predetermined length into the insertion groove 20 formed by the second step (S20), both ends of the "U" between the gradient layer (G) and the existing waterproof sheet (1). A third step (S30) of filling the silicon or low-viscosity urethane to the gradient layer (G) height in the center portion that is bent in the shape of a child to be firmly installed. Covering both ends of the air communication tube 30 with a piece sheet 40 'of about 2 to 3 cm by the third step (S30) while inserting under the existing waterproof sheet (1), the insertion groove 20 is formed In order to apply a low-viscosity urethane to the cut portion of the existing waterproof sheet (1) for the barrier layer (C) so that the urethane applied when forming the coating waterproof layer (60) does not flow between the gradient layer (G) and the existing waterproof sheet (1). Forming a fourth step (S40); Install one degassing hole (50) per 50 ~ 100㎡ each so as to discharge moisture or air between the gradient layer (G) and the existing waterproof sheet (1), the existing waterproof sheet (1) "+ "Cut to form the cutting groove (1 ') and then insert the lower end of the degassing hole 50 through the cutting groove (1'). The degassing hole 50 and the cutting groove (1 '). A fifth step (S50) of firmly fixing and installing a plurality of degassing holes 50 by reinforcing the connecting portion by glass fiber and applying high viscosity urethane to make it watertight; A sixth step (S60) of forming an adhesive layer (80) by applying an adhesive with a predetermined thickness on the cutting groove (10) formed by the first step (S10) and the existing coating layer (2); By forming a coating film with a predetermined thickness to the entire upper portion of the adhesive layer 80 and the cutting groove 10 formed by the sixth step (S60) to form a coating layer waterproof layer 60 to be integrated with the existing coating layer (2) Step 7 (S70); And an eighth step (S80) of forming a coloring protective layer 70 by applying a coating material or a pigment to a predetermined thickness on the upper portion of the waterproof film 60 formed by the seventh step (S70). It features.

In this way, by forming a new waterproof layer without removing the existing waterproof layer, not only can greatly improve the work efficiency, but also reduce the cost of dismantling because it does not have to deal with a large amount of waste. Environmental pollution can be minimized.

On the other hand, the present invention is not limited to the above embodiments, and various modifications can be made in the art without departing from the scope of the claims.

Figure 1a, 1b is a schematic cross-sectional view showing a conventional waterproof structure.

Figure 2 is a block diagram showing a construction process according to the present invention.

Figure 3 is a plan view showing a waterproof structure according to the present invention.

Figure 4 is a schematic cross-sectional view showing a waterproof structure according to the present invention.

Figure 5 is a bottom perspective view showing a waterproof sheet which is the main part of the present invention.

Figure 6 is an enlarged cross-sectional view showing another embodiment of the waterproof sheet which is the main part of the present invention.

Figure 7 is a block diagram showing a process of another embodiment of the present invention.

8 is a schematic cross-sectional view showing a waterproof structure according to another embodiment of the present invention.

    *** Description of the symbols for the main parts of the drawings ***

  10: cutting groove 20: insertion groove

  30: air communication tube 40: waterproof sheet

  42 nonwoven fabric 44 adhesive layer

  46: protrusion 48: inlet hole

  50: degassing hole 60: coating film waterproofing layer

  70: coloring protective layer S10 ~ S80: first step to eighth step

  80: adhesive layer

Claims (5)

In the waterproof method to prevent the leakage of water inside the structure by forming a waterproof layer on the gradient layer of mortar or concrete to a certain thickness to protect the roof of the construction structure or various slabs, A first step (S10) of cutting the cutting groove 10 having a predetermined depth to form a lattice by using a cutter on the entire upper surface of the gradient layer G; A second step S20 of cutting a plurality of insertion grooves 20 having a predetermined depth so as to form a cross shape using a cutter at a predetermined position of the cutting groove 10 formed by the first step S10; ; Insert the air communication tube 30 provided with a predetermined length into the insertion groove 20 formed by the second step (S20), but the both ends are upward to fill the bent central portion of the silicone or low viscosity urethane firmly To fix and install the third step (S30); The waterproof sheet is provided to a predetermined standard after applying the adhesive to the upper surface of the gradient layer (G), the lower edge of the grid-shaped cutting groove 10 and the waterproof sheet 40 formed by the first step (S10) A fourth step (S40) of covering the entirety of the gradient layer (G) to be closely attached thereto; A fifth step S50 of installing a degassing hole 50 per predetermined area to discharge moisture or air in the waterproof sheet 40 installed by the fourth step S40; Filling the urethane into the cutting groove 10 formed by the first step (S10) and at the same time coating the urethane to the entire upper portion of the waterproof sheet 40 to a certain thickness coating layer to be integrated with the gradient layer (G) A sixth step (S60) of forming a 60; And And a seventh step (S70) of forming a coloring protective layer 70 by applying a coating material or a pigment to a predetermined thickness on top of the waterproofing layer 60 formed by the sixth step (S60). Roof waterproofing method of construction structure. In the waterproof structure to prevent water leakage into the structure by forming a waterproof layer on the upper surface of the gradient layer to be cast to a certain thickness to protect the roof of the construction structure or various slabs, The cutting grooves 10 having a predetermined depth are formed in a lattice shape in the entirety of the gradient layer G, and the plurality of insertion grooves 20 are formed at predetermined positions of the cutting grooves 10, respectively, so that the insertion grooves 20 are formed. ) Installed at both ends of the air communication tube 30 upward to be firmly fixed by silicone or low viscosity urethane. Then, the watertight sheet 40 provided to a predetermined size is laminated between the cutting grooves 10 and laminated. After installing a plurality of air vents 50 exposed to the upper portion at a predetermined position of the waterproof sheet 40, the coating film waterproof layer formed by applying a urethane to the entire cutting groove 10 and the upper portion of the waterproof sheet 40 ( The roof of the construction structure, characterized in that 60 is bound to be integral with the gradient layer (G), and the colored protective layer 70 is applied to the entire upper portion to protect the coating layer 60 with a predetermined thickness. Waterproof structure. The waterproof sheet 40 has elasticity similar to that of the waterproof layer 60 on one surface of the nonwoven fabric 42 having an area of about 1.0 to 1.5 m in width and about 1.5 to 2 m in length. The adhesive layer 44 is formed of synthetic rubber in a vulcanized state in which the compounding is adjusted to have a shape, and the bottom surface of the adhesive layer 44 has a length of about 2 cm on one side and a height of about 0.5 to 1.5 mm in a rectangular protrusion. Is formed at regular intervals of 2 to 5 mm in all directions to withstand the load on the top and at the same time to allow the air to communicate smoothly between the projections 46, the inflow of the diameter of each of the projections 5 to 10 mm respectively The rooftop waterproof structure of the construction structure, characterized in that through the hole 48 to the liquid urethane is introduced to be in close contact with the gradient layer (G). According to claim 2, wherein the waterproof sheet 40 is about 1.0 to 1.5m, the length is about 18 to 25m on one surface of the nonwoven fabric 42 having an area similar to the coating film waterproof layer 60 so as to have Although the adhesive layer 44 is formed of a synthetic rubber in a non-vulcanized state in which the mixing is adjusted, a protective film P is attached to protect the bottom of the adhesive layer 44, and then wound and stored in a roll shape. Rooftop waterproofing structure of construction structure. In order to protect the roof of the construction structure or various slabs, the waterproof sheet 1 and the coating layer 2 are formed on the gradient layer G which is poured into mortar or concrete to a certain thickness to prevent leakage of water into the structure. In the construction method, First step (S10) of forming a cutting groove (10) to form a grid of the connection portion of the existing waterproof sheet (1) using a cutter in a state in which the existing waterproof sheet (1) and the coating layer (2) is not dismantled )Wow; A second step S20 of cutting a plurality of insertion grooves 20 having a predetermined depth so as to form a cross shape using a cutter at a predetermined position of the cutting groove 10 formed by the first step S10; ; Insert the air communication tube 30 provided with a predetermined length into the insertion groove 20 formed by the second step (S20), both ends of the "U" between the gradient layer (G) and the existing waterproof sheet (1). A third step (S30) of filling the silicon or low-viscosity urethane to the gradient layer (G) height in the bent central portion so as to be positioned in the shape of a child and firmly installing it; Covering both ends of the air communication tube 30 with a piece sheet 40 'of about 2 to 3 cm by the third step (S30) while inserting under the existing waterproof sheet (1), the insertion groove 20 is formed In order to apply a low-viscosity urethane to the cut portion of the existing waterproof sheet (1) for the barrier layer (C) so that the urethane applied when forming the coating waterproof layer (60) does not flow between the gradient layer (G) and the existing waterproof sheet (1). Forming a fourth step (S40); Install one degassing hole (50) per 50 ~ 100㎡ each so as to discharge moisture or air between the gradient layer (G) and the existing waterproof sheet (1), the existing waterproof sheet (1) "+ "Cut to form the cutting groove (1 ') and then insert the lower end of the degassing hole 50 through the cutting groove (1'). Fixed, the degassing hole 50 and the cutting groove (1 ') The fifth step (S50) of firmly fixing and installing a plurality of degassing holes 50 by reinforcing the connecting portion in contact with the glass fiber and then applying high viscosity urethane to make it watertight; A sixth step (S60) of forming an adhesive layer (80) by applying an adhesive with a predetermined thickness on the cutting groove (10) formed by the first step (S10) and the existing coating layer (2); By forming a coating film with a predetermined thickness to the entire upper portion of the adhesive layer 80 and the cutting groove 10 formed by the sixth step (S60) to form a coating layer waterproof layer 60 to be integrated with the existing coating layer (2) Step 7 (S70); And And an eighth step (S80) of forming a coloring protective layer 70 by applying a coating material or a pigment to a predetermined thickness on top of the waterproof film 60 formed in the seventh step (S70). Roof waterproofing method of construction structure.

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