KR102461838B1 - Method for performing waterproof of the roof of a building - Google Patents

Abstract

A waterproofing construction method of a building roof floor according to an embodiment of the present invention comprises the steps of dividing the waterproofing area of the building roof floor into predetermined unit areas; a perforating step of perforating a hole in a vertical direction to the floor for each of the unit areas; an air injection step of vertically injecting air into the hole; and an acrylic injecting step of injecting an acrylic material into the hole, wherein the air injecting step is performed so that the water present therein is adjacent to the first hole by the air injected into the first hole among the holes formed for each unit area. Injecting air at an air pressure set to be discharged through the second holes, by injecting air from a hole located in the center of the holes and by injecting air into other adjacent holes sequentially from the center hole radially outward from the center Water content can be reduced by discharging water radially to the outside.

Description

Method for performing waterproofing of the roof of a building

The present invention relates to a waterproofing construction method of a building roof floor, and more particularly, to a waterproofing construction method of a building roof floor by reducing the moisture content of a waterproofing layer formed on the building roof floor and constructing the waterproofing layer.

In general, when moisture such as rainwater seeps in from the roof or basement of a building, some of the moisture does not evaporate but penetrates into the building and adversely affects the durability of the structure. do waterproofing.

1 is a view showing a cross-section of a floor waterproofed on the roof of a building according to the prior art.

Referring to FIG. 1 , a concrete layer 10 is formed by slab construction on the roof of a building or the floor of the roof, and a waterproofing layer 20 is formed by waterproofing it with a waterproofing solution such as asphalt concrete. On the waterproofing layer 20, a heat insulating material such as Styrofoam, rock wool, glass wool, or the like is used as a heat insulating material to form a heat insulating layer 30, and a protective layer 40 is formed thereon with urethane to perform waterproofing construction.

In this waterproofing construction process, the insulating material is a type of foaming resin and has hygroscopicity containing moisture. When the amount of water 50 permeated over time increases, cracks or corrosion is induced on the roof floor, and in particular, it freezes in winter to promote freezing and cracking.

In addition, the surplus moisture generated when the waterproofing material containing moisture among the gambling waterproofing materials is solidified exists between the waterproofing layers 20, which causes swelling of the waterproofing layer due to a physical phenomenon due to heat exchange and promotes deterioration and fracture, When working with an iron trowel by a skilled worker for finishing treatment around the slope and drain during concrete construction on a waterproof base, concrete is double-bonded in a certain area, causing the waterproofing layer to float due to water retention due to rainfall and heat exchange due to solar radiation. do.

Therefore, in waterproof construction, it is important to remove or minimize the water 50 present in the waterproof layer 20 and the heat insulation layer 30 . In particular, even in the case of repairing the waterproof layer 20 using a leak repair material, if the amount of water 50 is large, there is a problem in that the repair becomes difficult. In fact, in the case of water leakage and waterproof construction, the water content of the waterproof layer 20 should be reduced to 6% or less to perform waterproof construction.

Therefore, in the technical field, there is a problem in that effective waterproofing construction is not performed because it is difficult to reduce the moisture content in the prior art, although a technique for reducing the water content in the waterproof layer 20 is required when waterproofing the floor of a building.

An object of the present invention is to solve the above problems, and to provide a method for waterproofing the roof of a building by removing the water contained in the waterproofing layer formed on the floor of the building so that the moisture content is minimized.

In addition, an object of the present invention is to provide a waterproofing construction method of the roof of a building to prevent water leakage by repairing the waterproofing layer by reducing the moisture content of the waterproofing layer.

A waterproofing construction method of a building roof floor according to an embodiment of the present invention comprises the steps of dividing the waterproofing area of the building roof floor into predetermined unit areas; a perforating step of perforating a hole in a vertical direction to the floor for each of the unit areas; an air injection step of vertically injecting air into the hole; and an acrylic injection step of injecting an acrylic material into the hole, wherein the air injection step is performed so that the water present therein is adjacent to the first hole by the air injected into the first hole among the holes formed for each unit area. Injecting air at an air pressure set to be discharged through the second holes, by injecting air from a hole located in the center of the holes, and by injecting air into other adjacent holes sequentially from the center hole radially outward from the center Water content can be reduced by discharging water radially to the outside.

The waterproof construction method of the building roof floor may further include, after the acrylic injection step, additionally forming a protective layer on the waterproof area.

The additionally formed protective layer may be a urethane waterproofing layer.

The acrylic material may be a two-component water-based acrylic gel.

The acrylic injection step may include installing an acrylic injection nozzle in each hole and injecting the acrylic material through the injection nozzle.

The injection nozzle may allow the acrylic material to be injected in one direction and prevent the injected acrylic material from being discharged in the opposite direction.

The waterproof construction method of the building roof floor may further include, after the acrylic injection step, removing the injection nozzle after a set time has elapsed.

The injected acrylic material may be 1 kg per 1 m × 1 m.

According to the present invention, since the amount of water present in the waterproofing layer formed on the floor of the building roof can be effectively minimized, the induction of cracks or corrosion in the roof floor can be prevented, and freezing and cracking caused by freezing of water in winter can be prevented. .

In addition, according to the present invention, it is possible to prevent the swelling of the waterproof layer by minimizing the moisture content of the waterproof layer and to prevent the problem of the waterproof layer being lifted due to heat exchange due to pooling and solar radiation.

In addition, according to the present invention, since the water content of the waterproof layer is minimized, the leak repair material can be effectively used, thereby maximizing the effect of waterproof construction.

1 is a view showing a cross-section of a floor waterproofed on the roof of a building according to the prior art.
2 is a view for explaining a waterproofing construction method of a building roof floor according to an embodiment of the present invention.
3 is a cross-sectional view of a building roof floor to which a waterproof construction method according to an embodiment of the present invention is applied.
4 is a cross-sectional view of a building roof floor to which a waterproof construction method according to an embodiment of the present invention is applied.
Figure 5 shows a flowchart of a waterproofing construction method according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but between each component another component It will be understood that may also be "connected", "coupled" or "connected".

2 is a view for explaining a waterproof construction method according to an embodiment of the present invention. 3 is a cross-sectional view of a building roof floor to which a waterproof construction method according to an embodiment of the present invention is applied.

2 and 3, the concrete layer 100 is formed by slab construction on the roof of the building or the floor of the roof, and the waterproofing layer 200 is is formed

A heat insulating layer 300 is formed as a heat insulator on the waterproof layer 200 , and a protective layer 400 is formed thereon with a pressed mortar (or also referred to as a protective mortar).

A roof drain (not shown) may be provided at any one point on the roof of the building or the floor of the roof. A roof drain may be provided for draining water accumulated on the roof of a building or on the floor of the roof for one day.

On the other hand, on the roof of the building, the waterproof layer or the insulation layer may be damaged, resulting in cracks (2) or cracks may occur in the reinforced concrete. However, in the case of the roof or roof of a building, not all of the water generated by rain or snow is drained and removed, but part of it seeps into the insulation layer 300 inside the roof floor by the cracks (2) formed in the floor of the building roof. If the amount of water 50 seeped over this time increases, it will cause cracks or corrosion on the roof floor.

In FIG. 3 , the crack 2 is illustrated as being formed in the protective layer 400 and the heat insulating layer 300 , but the crack 2 may also occur in the waterproof layer 200 and/or the concrete layer 100 .

Therefore, waterproof construction of the building roof floor should include performance restoration and crack repair of the waterproof layer 200.

The waterproof construction method according to the present invention makes it possible to effectively perform waterproof construction at a low cost for an existing waterproofing area.

Again, referring to FIGS. 2 and 3 , according to the waterproof construction method according to an embodiment of the present invention, the area to be subjected to a predetermined waterproof construction first (hereinafter referred to as a waterproof area) is a predetermined unit area 71 , 72, ...). The predetermined unit area is preferably 1 m × 1 m. These areas may be changed according to the moisture content of the interior. When the amount of water in the waterproof layer 200 is large, the area may be smaller. In another embodiment, the unit area may be recommended to be 0.5 to 2 m × 0.5 to 2 m.

Then, vertical drilling is performed so that at least one hole 81, 82, ... for waterproof construction is formed in each of the unit areas 71, 72, ... in a direction perpendicular to the bottom surface, respectively. . In this case, the size of each hole is preferably 0.5 to 1.5 mm in diameter. This is so that a strong wind can be formed when the wind is blown alone, as will be described later. At least one of the holes 81 , 82 , ... is perforated in a direction perpendicular to the bottom surface, that is, preferably, the waterproofing layer 200 . The reason is that, if the drilling is performed obliquely instead of in a vertical direction, wind is transmitted only in an oblique direction when a strong wind is blown, as will be described later, and the wind is not effectively transmitted in the other direction. This is explained in detail below.

As shown in FIG. 3 , at least one hole 81 , 82 , ... formed in the unit areas is drilled up to the waterproof layer 200 with a high possibility of stagnating water. In FIG. 3 , the at least one hole 81 , 82 , ... formed in the unit regions is illustrated as being formed in the protective layer 400 and the heat insulating layer 300 in the vertical direction, but at least one hole formed in the unit regions One hole 81 , 82 , ... may lead to the waterproof layer 200 and/or the concrete layer 100 . In addition, although each layer constituting the building roof floor is shown to be thick for convenience of the city, the thickness of the protective layer 400 , the heat insulating layer 300 , and the waterproof layer 200 is several mm.

Accordingly, in FIG. 3 , for example, holes 81 , 82 , ... are formed in the protective layer 400 and the heat insulating layer 300 in a vertical direction.

Then, air is vertically injected into the at least one hole (eg, 81) with a strong air pressure using an air compressor. In this embodiment, the air compressor may be a known compressor (compressor). In this case, since air is injected with a strong pressure through one hole, for example, the water 50 accumulated in the heat insulating layer 300 or the waterproof layer 200 can be discharged through an adjacent hole by this air pressure.

Specifically, by momentarily and strongly injecting air with strong air pressure through the first hole 81 , the water 50 existing in the vicinity of the first hole 81 is pushed by this air pressure and the first hole 81 ) to be discharged through the other second holes 82 adjacent to each other. Accordingly, the air pressure has a size such that at least the water 50 can be discharged through the adjacent second hole 82 by the air injected through the first hole 81 .

Thereafter, air is strongly injected through the second hole 82 in the same manner again so that water is discharged again through other holes adjacent to the second hole 82 . As such, in this embodiment, preferably, air is first injected into the hole in the center of the floor of the building roof first so that the water is discharged radially from the central part, and the air is sequentially injected through the adjacent holes in the same way. Again, the water continues to move away from the center so that it continues to push the water outward, eg towards the roof drain.

Through this process, the water content of the waterproof layer 200 is reduced by pushing the water 50 present in the waterproof layer 200 from the central part to the outside, that is, in the direction of the loop drain at the outside. Accordingly, the moisture content of the heat insulating layer 300 or the waterproof layer 200 may be reduced.

Moisture content is the moisture content, and it is calculated as a percentage by dividing the difference between drying before and after drying by the weight before drying when a sample, such as a fiber, achieves moisture equilibrium from a low moisture content in a standard state. That is, if the weight of the sample in the standard state is a and the weight of the sample after drying is b, (a-b) × a × 100 = moisture content or moisture content (%).

At this time, since strong air is blown through the holes formed in the vertical direction, if the holes are formed in an oblique direction instead of in the vertical direction, air is injected only in an oblique direction, and in this case, water can be pushed out only in one direction . In this case, water cannot be pushed out in the other direction than the one direction, so the reduction of the moisture content does not proceed efficiently.

If the holes are formed in the vertical direction as in this embodiment, if strong air is blown in the vertical direction momentarily through the hole, the water is radially pushed to the surrounding holes surrounding the corresponding hole, for example, at least 8 perimeters. Water can be discharged through the holes of As a result, effective moisture content reduction proceeds.

In some cases, when the amount of water 50 present in the waterproofing layer 200 is very small or there is no water 50 at all, even if a strong wind blows the water 50 through other adjacent holes. It may be emitted in very small quantities or not at all. In this case, it can be confirmed that there is little or no water 50 in the waterproof layer 200 by checking the strength of the wind discharged through other adjacent holes. In this case, it can be confirmed that the moisture content has already been reduced through the amount of water discharged through other holes or the strength of the wind.

In this way, after the moisture content is reduced by using strong air from the central part of the roof floor of the building to the outer shell radially, the work of filling each hole is carried out.

Specifically, the waterproof layer 200 is then formed by injecting a high-viscosity moisture-absorbing material into at least one hole 81, 82, ... formed in each of the unit regions 71, 72, ... of the waterproof region. play it back In this case, injection nozzles 510 and 520 are installed in each of the holes 81, 82, ... so that the high-viscosity water-absorbing material can be easily injected into the floor of the building roof. At this time, the water-absorbing material is injected by vertical pressure injection.

When the injection of the high-viscosity water-absorbing material is completed, the injection nozzles 510 and 520 may be removed after a predetermined time elapses. The injection nozzle may be, for example, a disposable packer. Such a packer can inject a liquid in one direction, but has a characteristic that the liquid is not discharged in the opposite direction.

On the other hand, the high-viscosity water-absorbing material is preferably a high-viscosity hydrophilic acrylic. For example, the high-viscosity water-absorbing material may be a two-component water-based acrylic gel.

It is preferable to inject 1 kg of such high viscosity acrylic per 1 m 2 . In other words, 1 kg of high-viscosity acrylic can be injected into one hole.

Accordingly, the moisture content of the heat insulating layer 300 or the waterproof layer 200 is lowered by the high-viscosity water-absorbing material. Accordingly, the moisture content inside the floor of the roof of the building may drop to 8% or less, preferably to 6% or less.

Thereafter, a protective film may be formed on the protective layer 400 by forming a urethane waterproofing layer (not shown) on the protective layer 400 .

Meanwhile, a heat insulating layer may be formed under the concrete layer 100 .

4 is a cross-sectional view of a building roof floor to which a waterproof construction method according to an embodiment of the present invention is applied.

As shown in Figure 4, the roof of the building or the floor of the roof is formed by arranging a heat insulating material, etc. to form the heat insulating layer 320, and the concrete layer 100 is formed by slab construction with concrete etc. on the heat insulating layer 320, A waterproofing layer 200 is formed thereon by waterproofing with a waterproofing liquid such as asphalt or a membrane. A protective layer 400 is formed on the waterproof layer 200 by pressing maltard or the like.

In this case, at least one hole (81, 82, ...) can be formed from the unit areas (71, 72, ...) of the waterproof area to the concrete layer 100 in the same way, and strong wind After reducing the moisture content by injection, the high-viscosity hydrophilic acrylic may be injected from the upper portion or the lower portion of the concrete layer 100 .

Figure 5 shows a flowchart of a waterproofing construction method according to an embodiment of the present invention.

The waterproof construction method according to an embodiment of the present invention includes a step 710 of dividing the waterproofing area into predetermined unit areas 71, 72, ... first. The predetermined unit area is preferably 1 m × 1 m.

The waterproof construction method is to perform perforation so that at least one hole (81, 82, ...) for waterproof construction is formed in each of the unit areas (71, 72, ...) in the vertical direction to the floor surface, respectively. step 720 .

Then, the waterproof construction method includes a step 740 of injecting air into the hole 81 with strong air pressure using an air compressor in at least one hole (eg, 81 ). In this case, since air is instantaneously injected with strong air pressure through one hole, for example, the water 50 stagnated in the heat insulating layer 300 or waterproof layer 200 is pushed by this air pressure to the adjacent hole (eg, 82). can be discharged through

In other words, the water 50 accumulated in the heat insulating layer 300 or the waterproof layer 200 is pushed by air and blown with air of strong air pressure so that it can be discharged through another adjacent hole 82 . Accordingly, the moisture content of the heat insulating layer 300 or the waterproof layer 200 may be reduced.

In this case, the order of injecting air into the hole may be required depending on the hole. Specifically, air is first injected into the first hole formed in the central part of the roof floor of the building to radially push the water, so that the water is discharged through the second holes adjacent to the first hole.

Thereafter, air is injected into the second holes to continuously push water outward, so that water is discharged through other holes adjacent to the second holes.

By continuing this process, the water is pushed out radially from the center and discharged, and eventually the water is discharged through the outermost hole or loop drain, thereby increasing the efficiency of reducing the moisture content.

Then, the waterproof construction method comprises the steps of injecting a high-viscosity water-absorbing material into at least one hole (81, 82, ...) formed in each of the unit areas (71, 72, ...) of the waterproof area ( 740).

Then, the waterproof construction method includes a step 750 of forming a protective film on the protective layer 400 by forming a urethane waterproofing layer (not shown) on the protective layer 400 .

According to the embodiments of the present invention, waterproof construction is carried out by drilling a structure in the roof floor, discharging moisture inside the roof floor to the outside using high-pressure compressed air to lower the moisture content of the roof floor, and then injecting a high-viscosity hydrophilic material. do.

In the above, even though all components constituting the embodiment according to the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "include", "compose" or "have" described above mean that the corresponding component may be inherent unless otherwise stated, so excluding other components Rather, it should be construed as being able to include other components further. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: concrete layer
200: waterproof layer
300, 320: insulation layer
400: protective layer

Claims (8)

In the waterproof construction method on the roof floor of a building in which a waterproofing layer, an insulating layer and a protective layer are sequentially stacked on a concrete layer,
a dividing step of dividing the waterproofing area of the building roof floor into predetermined unit areas;
A drilling step of drilling holes having a diameter of 0.5 to 1.5 mm in each of the unit areas in a vertical direction to the floor, and drilling to the waterproof layer;
an air injection step of vertically injecting air into the hole; and
Including an acrylic injection step of injecting an acrylic material into the hole,
In the air injection step,
Air is momentarily strongly injected at an air pressure set so that water existing in the vicinity of the first hole is discharged through the second holes adjacent to the first hole by the air injected into the first hole among the holes formed in each unit area, Among the holes, air is injected first from the central hole, and air is sequentially injected into other adjacent holes while going radially outward from the central hole so that the water continues to move away from the center so that water is radially from the center. A building having a strength such that water content is reduced by discharging it to a roof drain installed outside, and the air pressure is at least capable of discharging the water through the adjacent second hole as water is pushed by the air injected through the first hole How to waterproof the roof floor.
The waterproof construction method according to claim 1, further comprising the step of forming a protective layer on the waterproof area after the acrylic injection step.
The waterproof construction method according to claim 2, wherein the additionally formed protective layer is a urethane waterproofing layer.
The waterproof construction method according to claim 1, wherein the acrylic material is a two-component water-based acrylic gel.
The waterproof construction method according to claim 1, wherein the acrylic injection step includes installing acrylic injection nozzles in each hole and injecting the acrylic material through the injection nozzles.
The waterproof construction method according to claim 5, wherein the injection nozzle injects the acrylic material in one direction and prevents the injected acrylic material from being discharged in the opposite direction.
The waterproof construction method according to claim 5, further comprising, after the acrylic injection step, removing the injection nozzle after a set time has elapsed.
The method of claim 1, wherein the injected acrylic material is 1kg per 1m Х 1m.

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