KR102673800B1 - Exposed composite sheet and waterproofing method using the same - Google Patents

Abstract

The present invention relates to an exposed composite sheet and a waterproofing method using the same, and more specifically, to an exposed composite sheet with a waterproof function used with a liquid waterproofing material.
This invention, SBS improved asphalt; and a first PET nonwoven fabric and a PET film, and an upper laminate provided on top of the SBS improved asphalt.

Description

Exposed composite sheet and waterproofing method using the same {EXPOSED COMPOSITE SHEET AND WATERPROOFING METHOD USING THE SAME}

The present invention relates to an exposed composite sheet and a waterproofing method using the same, and more specifically, to an exposed composite sheet with a waterproof function used with a liquid waterproofing material.

If fine cracks occur on the surface of a building structure that is exposed to the external environment, such as the roof of a building, an underground parking lot, or a bridge, the lifespan of the structure will be significantly reduced due to the deterioration of the building structure due to water leakage. , it can cause serious safety problems.

Accordingly, various waterproofing works are carried out to prevent deterioration of the surface of building structures that are frequently exposed to the external environment.

As a waterproofing method, there is a liquid waterproofing method (see Patent No. 10-0622062 (hereinafter referred to as Prior Art 1)) that applies a waterproofing liquid to the construction surface, but there is a problem that the liquid waterproofing layer is uneven if the construction surface is uneven. As the above-mentioned waterproofing liquid, urethane or the like is used as an example.

In addition, as a waterproofing method, there is a sheet waterproofing method (Patent No. 10-0157053 (see Prior Art 2 below)) that attaches a sheet made of waterproof material to the construction surface, but the problem is that if the construction surface is uneven, a lifting phenomenon may occur. There is.

On the other hand, when applying a waterproofing liquid to the upper part of the construction surface, cracks occur in the construction surface of the structure over time, and the hardened waterproofing layer also cracks. In this case, there is a problem in that water leakage occurs and waterproofing performance deteriorates.

The present invention was developed to solve the above problems, and its purpose is to provide an exposed composite sheet that can maintain waterproof performance for a longer period of time when used with a liquid waterproofing material, and a waterproofing method using the same.

Another object of the present invention is to provide an exposed composite sheet that has excellent durability, heat resistance, weather resistance, etc., effectively suppresses delamination, and has improved rooting properties, and a waterproofing method using the same.

The present invention, aimed at solving the above problems, has the following configuration and characteristics.

SBS modified asphalt; and a first PET nonwoven fabric and a PET film, and an upper laminate provided on top of the SBS improved asphalt.

In addition, the first PET nonwoven fabric is provided on the SBS modified asphalt, the PET film is provided on the first PET nonwoven fabric, and the upper laminate may further include a second PET nonwoven fabric provided on the PET film. You can.

In addition, it may further include a third PET nonwoven fabric provided under the SBS modified asphalt and a lower lamination portion including a hot melt adhesive layer provided under the third PET nonwoven fabric and containing acrylic.

A waterproofing method using an exposed composite sheet, comprising the steps of applying asphalt primer to the upper part of the construction surface (S10); Attaching the exposed composite sheet to the top of the asphalt primer (S20); Injecting a sealing material containing urea into the border of adjacent exposed composite sheets (S30); and applying a liquid waterproofing material to the upper part of the exposed composite sheet (S40).

The present invention having the above configuration and features has the effect of maintaining waterproof performance for a longer period of time when used together with a liquid waterproofing material.

In addition, the present invention has excellent durability, heat resistance, weather resistance, etc., effectively suppresses peeling, and has improved rooting properties.

1 is a diagram for explaining an exposed composite sheet according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of the exposed composite sheet.
Figure 3 is a schematic flowchart for explaining a waterproofing method according to an embodiment of the present invention.
Figure 4 is a diagram for explaining an exposed composite sheet and liquid waterproofing material constructed by a waterproofing method according to an embodiment of the present invention.
Figure 5 is a diagram for explaining a further embodiment of the present invention.

Since the present invention can be subject to various changes and can have various forms, implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in this specification are merely used to describe specific implementation examples (sun, aspect, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~include~ or ~consist of~ are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

~First~, ~Second~, etc. described in this specification are only used to distinguish different components, and are not limited by the order of manufacture, and the names are used in the detailed description and claims of the invention. may not match.

Throughout this specification, when a part is said to be “connected” to another part, this includes not only the case where it is “directly connected” but also the case where it is “indirectly connected” with another element in between. do.

1 is a diagram for explaining an exposed composite sheet according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the exposed composite sheet.

The exposed composite sheet (S) according to an embodiment of the present invention is attached to the construction surface (C) of the concrete structure, and will hereinafter be referred to as 'this sheet' for convenience of explanation.

Referring to Figures 1 and 2, this sheet (exposed composite sheet (S) according to an embodiment of the present invention) includes SBS modified asphalt (1) and an upper laminate (2).

SBS improved asphalt (1) improves the temperature sensitivity and viscoelastic properties of petroleum asphalt by mixing SBS (Styrene-Butadiene-Styrene) with petroleum asphalt (for example, straight asphalt). The above-mentioned SBS is a high molecular weight polymer obtained by solution polymerization of styrene and butadiene.

In order to add a waterproof function to a concrete structure, a liquid waterproofing material such as urethane is applied to the surface to form a liquid waterproofing layer. However, over time, cracks occur in the concrete structure or liquid waterproofing layer, and waterproofing is not maintained for a long period of time.

The above-described SBS improved asphalt (1) basically adds waterproofing function to this sheet, and is attached to the surface of the concrete structure in the form of a sheet to add waterproofing even if cracks occur in the concrete structure due to long-term use.

In addition, the SBS modified asphalt (1) has excellent adhesion, so that the upper layer (2) and the lower layer (3), which will be described later, can be easily attached.

The upper laminate (2) includes a first PET nonwoven fabric (21) and a PET film (22), and is provided on top of the SBS modified asphalt (1).

The upper side (top, top, upper surface, etc.) refers to the upper side (top, top, upper surface, etc.) with respect to Figure 2, and the lower side (lower, lower, lower surface, etc.) refers to the lower side (lower, lower, lower surface, etc.) with respect to Figure 2. etc.), which will be explained in the same way in the following description.

The first PET nonwoven fabric (21) (polyethylene terephthalate nonwoven fabric) is a long fiber nonwoven fabric that is distinguished from short fiber (needle punched felt, chemical, stitch bonding) nonwoven fabric, and is a mixture of fibers such as PET with low melting point plasticity. It is manufactured by combining fibrous tissue by igniting or melting it with heat or pressure.

The first PET nonwoven fabric (21) does not use adhesives, so it is hygienic and environmentally friendly, and has excellent properties such as high strength, heat resistance, weather resistance, and chemical resistance. In particular, the first PET nonwoven fabric 21 can play a role in securing the rigidity of the SBS modified asphalt 1 or this sheet.

PET film (22) (polyethylene terephthalate film) is made by drying and melting PET, extruding it into a sheet shape, and then stretching it about three times, and has excellent properties such as excellent strength, heat resistance, and impact resistance. there is.

The first PET nonwoven fabric (21) and PET film (22) have properties such as excellent strength and heat resistance, improving the mechanical properties of this sheet, and are provided on the top of the SBS modified asphalt (1) to form the upper laminate (described later). 2) Damage to the SBS modified asphalt (1) can be prevented by preventing oily components such as thinner of the liquid waterproof layer provided at the top from coming into contact with the SBS modified asphalt (1).

In addition, as described above, the PET film 22 has excellent strength, so it can additionally add a rooting function to the sheet.

Referring to FIGS. 1 and 2, the first PET nonwoven fabric 21 is provided (placed) on the SBS modified asphalt 1, and the PET film 22 is disposed on the first PET nonwoven fabric 21. It can be provided.

At this time, the upper laminated part 2 may include a second PET nonwoven fabric 23 provided on the PET film 22.

The second PET nonwoven fabric 23 differs only in position from the first PET nonwoven fabric 21 provided below the PET film 22 in that it is provided on top of the PET film 22, and its components and characteristics are Since it corresponds to the above-described first PET nonwoven fabric 21, the description of the above-described first PET nonwoven fabric 21 will be replaced.

The important point in the upper layered portion (2) is that it is provided on top of the SBS modified asphalt (1), and the PET film (22) is provided between the first PET nonwoven fabric (21) and the second PET nonwoven fabric (23). When the PET film 22 is attached directly to the top of the SBS improved asphalt 1 or is located at the top and exposed to the outside, there is a problem that the PET film 22 is easily peeled off due to the nature of the film.

The upper laminated portion (2) is such that the PET film (22) is disposed between the first PET nonwoven fabric (21) and the second PET nonwoven fabric (23) to separate the PET film (22) from the SBS modified asphalt (1) by external force. This was done to minimize peeling.

In addition, PET non-woven fabrics (first PET non-woven fabric 21, second PET non-woven fabric 23, etc.) are formed by pressing PET fibers into a non-woven fabric, and the surface is generally uneven and is more deformed than the PET film 22 when pressed downward. Because this is easy, the PET film 22 is protected from the top and bottom against external forces, so the PET film 22 and the SBS modified asphalt 1 described above can be effectively protected from external forces.

For example, a PE film may be attached between the first PET nonwoven fabric 21 and the PET film 22 and between the second PET nonwoven fabric 23 and the PET film 22. Each component of the upper laminate 2 can be attached by various known adhesives.

Referring to Figures 1 and 2, this sheet includes a third PET nonwoven fabric 31 provided under the SBS improved asphalt (1) and a hot melt adhesive layer provided under the third PET nonwoven fabric 31 and containing acrylic ( It may include a lower laminated portion 3 including 32).

The third PET nonwoven fabric 31 is different from the first PET nonwoven fabric 21 only in its location in that it is provided below the SBS modified asphalt 1, and has components corresponding to the first PET nonwoven fabric 21 described above. Since it has characteristics, it will be replaced with the description of the first PET nonwoven fabric 21 described above.

The third PET nonwoven fabric 31 can be attached to the lower part of the SBS modified asphalt (1) by the self-adhesive force of the SBS modified asphalt (1). As described above, the PET nonwoven fabric has heat resistance, fatigue resistance, durability, strength, It has excellent weather resistance, etc., so it protects the lower part of the SBS improved asphalt (1) and, in particular, can maintain the formation of the lower part of the SBS improved asphalt (1).

In other words, the holding power can be improved so that the sheet has the intended shape, and through this, the constructability of the sheet can be improved.

The hot melt adhesive layer 32, that is, the above-mentioned hot melt adhesive layer 32, may be an acrylic-based hot melt adhesive layer 32 containing acrylic. Since the above-mentioned hot melt adhesive layer 32 is known, a more detailed description will be omitted.

The hot melt adhesive layer 32 can be attached to the lower part of the third PET nonwoven fabric 31 by self-adhesive force, and is attached to the upper part of the construction surface (C) during construction so that the sheet can be constructed on the construction surface (C). do.

This sheet may include release paper 4 (release film) provided below the lower laminated portion 3 described above. The release paper 4 may be of various known types and may be attached to the lower part of the hot melt adhesive layer 32.

During construction, the release paper 4 can be separated from the hot melt adhesive layer 32 and removed.

Figure 3 is a schematic flowchart for explaining a waterproofing method according to an embodiment of the present invention. Figure 4 is a diagram for explaining an exposed composite sheet and liquid waterproofing material constructed by a waterproofing method according to an embodiment of the present invention.

Hereinafter, a waterproofing method (hereinafter referred to as 'this method') according to an embodiment of the present invention will be described. This method is a waterproofing method using the above-described sheet, and includes the same or corresponding technical features as the above-described sheet. Therefore, the same reference numerals are used for the same or similar configurations as the previously examined configurations, and overlapping descriptions are briefly provided. Or decide to omit it.

Referring to Figures 3 and 4, this method includes a primer application step (S10), a sheet attachment step (S20), a sealing step (S30), and a liquid waterproofing material application step (S40).

The primer application step (S10) is a step of applying asphalt primer (5) to the upper part of the construction surface (C). As the asphalt primer 5, known ones can be used.

The above-mentioned asphalt primer (5) can be applied on the upper part of the construction surface (C) to smoothen the uneven construction surface (C) and improve the adhesion between the sheet and the construction surface (C).

The sheet attachment step (S20) is a step of attaching the sheet to the top of the asphalt primer (5). As described above, in step (S20), the release paper (4) can be separated, and the lower part of the lower bonded portion (3) can be placed and attached to the upper part of the asphalt primer (5).

The sealing step (S30) is a step of adding a sealing material (6) containing urea to the boundary between neighboring bone sheets.

In step (S20), the sheets may be constructed so that their ends overlap, or they may be constructed without overlapping each other. In order to prevent water, etc. from penetrating through the boundaries between neighboring sheets, in step (S30), adjacent sheets may be constructed so as to overlap each other. Fill the border of this sheet with sealing material (6). That is, the sealing material 6 reinforces density and water resistance at the boundaries of the sheets.

The above-described sealing material 6 may include urea and urethane, and has a low viscosity, so no scraping is required during construction, and it can be applied by spraying. In addition, the sealing material (6) has excellent water resistance, chemical resistance, and weather resistance when cured.

The liquid waterproofing material application step (S40) is a step of applying the liquid waterproofing material (7) on the upper part of the main sheet described above.

By way of example, the liquid waterproofing material (7) may include urethane, and the liquid waterproofing material application step (S40) is an intermediate construction step (S71) of applying and curing the liquid waterproofing material (7) on the upper part of the main sheet. It may include a top coat construction step (S71) of applying and curing the liquid waterproofing material (7) on the cured liquid waterproofing material (7).

This sheet may include a waterproofing material (GS) that is always applied to the upper part (upper surface) of the upper laminate (2) and an additive material (G) mixed with the waterproofing material (GS).

The waterproofing material (GS) may be applied to the upper surface of the upper layer 2 and may be composed of 5 parts by weight of urethane (compared to 0.1 part by weight of latex, which will be described later). The waterproofing material (GS) is composed of urethane and adds waterproofing properties.

Urethane is commonly used as a waterproofing material, and is applied in liquid form to an object and then cured. The above additive material (G) can be mixed with urethane in a liquid state in the form of particles.

Referring to Figure 5, a fibrous inner film (G1) composed of 0.1 part by weight of latex; A cushioning material (G2) containing 0.1 part by weight of heptadecane relative to 0.1 part by weight of the latex and disposed inside the inner film (G1); An outer shell material (G3) composed of 0.1 part by weight of polyethylene relative to 0.1 part by weight of the latex, surrounding the inner film (G1), and having a plate shape; An absorbent material (G4) composed of 0.1 part by weight of VantaBlack relative to 0.1 part by weight of the latex, and disposed between the inner film (G1) and the outer covering material (G3); A weight body (G5) composed of 0.1 parts by weight of magnesium relative to 0.1 parts by weight of the latex, has a plate shape, and is provided on the outer lower portion of the outer shell material (G3); A floating body (G6) composed of 0.3 parts by weight of aerographite compared to 0.1 parts by weight of the latex and provided on the upper inner side of the outer shell material (G3); A cationic material (G7) composed of 0.1 part by weight of polyethyleneimine relative to 0.1 part by weight of the latex and provided on the inside of both sides of the outer shell material (G3); And a reflector (G8) composed of 0.1 part by weight of aluminum relative to 0.1 part by weight of the latex, extending laterally from the side of the outer shell material (G3) but slanted upward, and disposed above the cationic material (G7). do.

The above-mentioned heptadecane, polyethylene, vantablack, magnesium, aerographite, polyethyleneimine, aluminum, and urethane of the additive material (G) will be explained based on 0.1 part by weight of the above-mentioned latex.

The inner film (G1) is composed of 0.1 part by weight of latex and is fibrous. The inner film (G1) has a receiving space formed on the inside so that the inside is filled with a cushioning material (G2), which will be described later.

Here, the inner side refers to the center side (the center side of the buffer material (G2)) when looking at the additive material (G) in a cross-sectional view as shown in FIG. 5, and the outer side refers to the radial direction side from the center side, and the same is true in the following description. It is decided to be the same.

The cushioning material (G2) contains 0.1 part by weight of heptadecane relative to 0.1 part by weight of latex, and is placed and accommodated inside (inner space) of the inner film (G1).

The above-described heptadecane is a phase change material (PCM) with a melting point of about 22°C.

A phase change material is an energy storage material that can actively store and release heat without external factors in the form of latent heat without a change in temperature when the phase changes depending on the surrounding temperature.

In general, latent heat, which is heat that enters and exits without a temperature change when a phase change occurs, has a significantly higher amount of heat than sensible heat, which is heat that enters and exits with a temperature change without accompanying a phase change. This feature can be used to store high amounts of thermal energy or maintain temperature.

The above-mentioned cushioning material (G2) is composed of undecane, dodecane, tridecane, pentadecane, and tetradecane in addition to heptadecane to change the melting point. , Heptadecane, Octadecane, Nonadecane, Eicosane, and Triacontane may be further included. The melting point of the cushioning material (G2) can be adjusted within the range of 1 to 30°C, which is room temperature.

As described above, the inner film (G1) surrounding the cushioning material (G2) is formed in a fibrous form and can add toughness to the additive material (G) together with the cushioning material (G2) accommodated inside.

The above-mentioned inner film (G1) is preferably composed of 0.1 part by weight of latex. If it exceeds 0.1 part by weight, there is a risk that the cushioning material (G2) may be lost as it cannot sufficiently surround the above-mentioned cushioning material (G2). In this case, the weight of the additive (G) may be excessively increased and the dispersibility may be reduced.

The outer shell material (G3) surrounds the inner film (G1), is composed of 0.1 part by weight of polyethylene, and may be plate-shaped or fibrous with a space formed inside to accommodate the inner film (G1).

Inside the outer shell (G3), an absorber (G4) made of Vantablack, which will be described later, as well as the inner film (G1) can be accommodated, and the outer shell (G4) can be accommodated to supply light to the absorber (G4), which will be described later. G3) is made of transparent polyethylene, allowing light to pass through.

The outer covering material G3 is formed in a plate shape or fiber shape to maximize the area on which light is irradiated.

The outer shell material (G3) is composed of 0.1 part by weight of polyethylene. If the polyethylene is less than 0.1 part by weight, it cannot sufficiently surround the absorber (G4) and the inner film (G1), which will be described later, and if it exceeds 0.1 part by weight, light transmittance may be reduced. there is.

The absorbent material (G4) is composed of 0.1 part by weight of VantaBlack and is accommodated inside the outer shell material (G3) and disposed between the outer shell material (G3) and the inner film (G1). That is, the absorber (G4) described above can wrap the inner film (G1).

Vantablack is a material that absorbs 99.965% of light. The above-described Vanta Black is made by erecting fine carbon nanotubes and going through a process of reflecting each other countless times between tubes, so that most of the incoming light is absorbed.

The Vantablack may be disposed between the outer shell material (G3) and the inner film (G1) in the form of a pigment.

After the mixture of the above-described additive material (G) and the waterproofing material (GS) is applied and cured to the upper layer 2, when light is irradiated, the light passes through the outer shell material (G3) and is absorbed into the absorber ( G4) is absorbed.

As light is absorbed through the Vantablack, the temperature of the additive material (G) temporarily rises, and the heat is transferred to the cushioning material (G2) through the latex, and the cushioning material (G2) is the Vantablack It absorbs the heat and lowers the temperature of the additive material (G) again.

In this way, Vantablack suppresses the rise in ambient temperature by minimizing the light reflected from XX, and at the same time, the cushioning material (G2) absorbs the heat generated by absorption by Vantablack to maintain the temperature of the additive material (G) constant. You can.

In other words, by suppressing the temperature change of the waterproofing material (GS) and minimizing thermal expansion of the waterproofing material (GS), damage to the waterproofing material (GS) is suppressed and waterproofing is maintained for a long time, and the temperature of the upper layer 2 and the upper There is an advantage in that temperature changes around the laminated section 2 can be minimized.

Meanwhile, the weight body (G5) is composed of 0.1 part by weight of magnesium, has a plate shape, and is provided on the outer lower part of the outer shell material (G3).

Here, the lower part (lower side, etc.) is the lower part (lower side, etc.) when the floating body (G6) described later is viewed in a cross-sectional view of the additive material (G) with the floating body (G6) disposed above the above-mentioned weight body (G5) (see FIG. 5). means, and the upper part (upper side, etc.) refers to the upper part (upper side, etc.) when viewed in a cross-sectional view of the additive material (G) with the floating body (G6) disposed above the above-mentioned weight body (G5). The same will be applied in the explanation.

The above-described weight (G5) may be attached to the above-described outer covering material (G3) via a common adhesive or the like.

The above-mentioned weight (G5) is provided at the lower part of the outer covering material (G3) so that its center line parallel to the vertical direction coincides with the center line parallel to the vertical direction of the outer covering material (G3). .

Additionally, the floating body (G6) is composed of 0.3 parts by weight of aerographite and is provided on the outer upper part of the outer shell material (G3). Likewise, the floating body (G6) may be provided on the outer shell material (G3) so that the center line parallel to the vertical direction coincides with the center line parallel to the vertical direction of the outer shell material (G3). Likewise, the floating body (G6) described above can be attached to the outer covering material (G3) using a common adhesive or the like.

The above-mentioned aero-graphite is obtained by processing zinc oxide, and when viewed under a microscope, it has a sponge-like structure with intertwined very thin carbon tubes, that is, porous walls.

The above-mentioned aerographite has a specific gravity of about 0.18, which is much smaller than the specific gravity of urethane (about 1.13), and thus plays a role in allowing the additive material (G) to float in the waterproofing material (GS).

As described above, the center line parallel to the vertical direction of the weight body G5 and the floating body G6, respectively, is aligned with the center line parallel to the vertical direction of the outer covering material G3, so that the plate-shaped additive material G is formed. Instead of standing up, it can be distributed in a lying down form as shown in Figure 5. Through this, the area on which light is irradiated can be made as large as possible by having the widest possible surface of the additive material (G) face upward.

The above-mentioned floating body (G6) is preferably composed of 0.3 parts by weight of aerographite. If it is less than 0.3 parts by weight, the additive material (G) may not be sufficiently suspended, and 0.3 parts by weight is used to determine the size of the space of the outer shell material (G3). There is a problem with reducing it.

The floating body (G6) is provided on the inner upper part of the outer covering material (G3) and can play the role of separating the inner film (G1) from the outer covering material (G3), through which it flows to the upper part of the inner film (G1). To form a space where the absorber (G4) can be placed. Additionally, the floating body (G6) may be disposed inside the outer shell (G3) and protected by the outer shell (G3).

The above-mentioned weight (G5) is provided at the outer lower part of the above-described outer covering material (G3) and can also serve to reflect the light that has passed through the Vanta Black and move it to the Vanta Black, and therefore, it is preferable to have a plate shape. , It is preferable that it is provided on the outer lower part of the outer covering material (G3).

The above-described weight (G5) is composed of magnesium (specific gravity about 1.74), which has a relatively small specific gravity, as described above. If magnesium exceeds 0.1 part by weight, the own weight of the additive (G) increases excessively, and 0.1 part by weight If it is less than that, there is a problem of not sufficiently reflecting the light passing through.

The reflector (G8) is composed of 0.1 part by weight of aluminum compared to 0.1 part by weight of the latex, and is oriented laterally (left and right with respect to FIG. 5) from the side of the outer shell material (G3) (left and right with respect to FIG. 5). ), but is slanted upward.

The reflector (G8) plays the role of reflecting light and concentrating it on the top of the additive material (G), thereby improving the light absorption of Vanta Black.

The reflector G8 may also be provided by being attached to the outer covering material G3 using a common adhesive or the like.

The cationic material (G7) is provided at both ends of the outer shell material (G3) and consists of 0.1 part by weight of polyethyleneimine.

The cationic material (G7) can also be attached to the outer shell material (G3) using a conventional adhesive or heat fusion method.

Polyethyleneimine, which constitutes the cationic material (G7), is a polymer obtained by polymerizing ethyleneimine and is known to have the highest cation density among existing materials.

A number of monomers (GU) of the additive material (G) may be mixed with the waterproofing material (GS), and the cationic material (G7) may play a role in improving the dispersibility of neighboring monomers (GU).

The above-mentioned cationic material (G7) is provided below the reflector (G8) to minimize the deterioration of the light reflection function of the reflector (G8).

The present invention described above with reference to the accompanying drawings can be modified and modified by those skilled in the art, and such modifications and changes should be construed as falling within the scope of the present invention.

Exposed composite sheet: S
SBS modified asphalt: 1 Top layer: 2
First PET nonwoven fabric: 21 PET film: 22
Second PET nonwoven fabric: 23 Bottom lamination: 3
Third PET nonwoven fabric: 31 Hot melt adhesive layer: 32
Release paper: 4
Asphalt Primer: 5 Sealing Material: 6
Liquid waterproofing material: 7 Construction surface: C

Claims (4)

SBS modified asphalt; and
An upper laminate comprising a first PET nonwoven fabric and a PET film, and provided on top of the SBS improved asphalt; Including,
The first PET nonwoven fabric is provided on the SBS modified asphalt, and the PET film is provided on the first PET nonwoven fabric,
The upper laminate further includes a second PET nonwoven fabric provided on the PET film,
The first PET nonwoven fabric and the second PET nonwoven fabric protect the PET film and the SBS modified asphalt from external force,
It further includes a lower laminate including a third PET nonwoven fabric provided under the SBS modified asphalt and a hot melt adhesive layer provided under the third PET nonwoven fabric and containing acrylic,
An exposed composite sheet comprising a release paper attached to the lower part of the hot melt adhesive layer. delete delete A waterproofing method using the exposed composite sheet according to claim 1,
Applying asphalt primer to the upper part of the construction surface (S10);
Attaching the exposed composite sheet to the top of the asphalt primer (S20);
Injecting a sealing material containing urea into the border of adjacent exposed composite sheets (S30); and
Applying a liquid waterproofing material on the exposed composite sheet (S40);
A waterproofing method comprising:

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