KR101098953B1 - waterproof sheet - Google Patents

Abstract

The present invention relates to a double-sided adhesive water-expandable waterproof sheet and a waterproofing method using the same, and more particularly, after the process oil and softener are added to rubber asphalt or butyl rubber containing SBS to form a pressure-sensitive adhesive material having fluidity. A water-expandable waterproof layer having a semi-solid adhesive property formed by mixing a resin having a property of absorbing bentonite or water; A mesh net impregnated to be located at or near the one side or the other side of the waterproof layer, and having a mesh with a predetermined thickness and size, the mesh being made of synthetic resin or metal; Adhesion protection layer made of a non-expandable material formed by adding process oil and softener to rubber asphalt or butyl rubber containing SBS to form another waterproof layer by attaching or applying to at least one of both sides of the water-expandable waterproof layer. and; A first release paper attached to one of the adhesive protective layers; And a second release paper attached to the other side of the water-expandable waterproof layer or the other adhesive protective layer.

Therefore, the waterproof sheet of the present invention having a double-sided adhesive function by the adhesive is attached to one side of the base surface after removing the release paper, and then remove the release paper of the other side, and separately attached to the waterproof sheet or waterproof layer protective material attached in accordance with the subsequent process The adhesive sheet is manufactured to be easily attached by the adhesive force of the waterproof sheet without the adhesive treatment process, and the mesh net serves as a support layer of the waterproof sheet composed of the adhesive material. This push minimizes the phenomenon, and is fixed by nails or anchors such as slurry walls and earth walls during the construction of plywood sections, and serves as a supporting layer for preventing sagging of the waterproof sheet. Protects the surface of the adhesive layer and includes it on the surface of the adhesive layer By applying a coating layer not included, there is provided a double-sided adhesive water-expandable waterproof sheet having a function of preventing premature expansion even when the base surface containing moisture is contained, and a waterproofing method using the same.

Description

 Double-sided adhesive water-expandable waterproof sheet and waterproof method using same

The present invention relates to an adhesive water-expandable waterproof sheet which is easily attached to both sides by self-adhesive force, and a waterproofing method using the same. In particular, it minimizes the phenomenon of the adhesive layer being pushed due to walking or concrete pouring pressure after waterproofing construction, During construction of the section, the mesh wall serves as a support layer to prevent sagging of the waterproof sheet by being fixed to the wall of soil such as slurry walls and earth walls by nails or anchors, and to protect the adhesive layer under the mesh when subsequent concrete is laid. And by applying a pressure-sensitive adhesive layer that does not contain it on the surface of the pressure-sensitive adhesive layer containing the expansion material, double-sided adhesive water-expandable waterproof sheet having the function of preventing premature expansion even when the base surface containing water and the same It relates to a waterproof method.

In particular, it is possible to prevent air pollution by attaching by self-adhesive strength of sheets without heat-melting process where primers and adhesives that use organic solvents are high, and dioxin, etc. It relates to a waterproofing agent and a method having environmental characteristics.

The semi-solid adhesive material having a conventional expansion function has the property of absorbing water introduced into the damaged part and expanding when the damage occurs after the waterproofing layer is formed, thereby restoring the damaged space to block leakage.

The function of restoring damage caused by swelling is that if the expansion is made freely in the absence of a load on the adhesive material, the internal density is lowered and the waterproof function is reduced by restoration. When expanded under consolidation under load, the relative internal density due to compression is increased and the effect is greatly exerted.

 In other words, when the expansion of the adhesive material is performed by the base surface-containing moisture during the construction of the adhesive material, the relative consolidation is achieved when the expansion of the adhesive material is performed before the consolidation structure, such as concrete pouring or soil refilling, is achieved. Due to the degradation, the ability to restore expansion is halved.

In addition, the adhesive material maintains a semi-solid gel shape, and after the base surface is applied, the waterproof layer is partially pushed out by impact and load such as walking, material loading, concrete pouring, and backfilling. The site does not secure the proper thickness, the problem is that the waterproof performance is reduced.

In addition, the adhesive material is to add a separate solid sheet on the top to prevent the adhesion of the adhesive material when walking for the subsequent process, such as after coating the base surface, and after the waterproofing to the top of the waterproof layer for the purpose of forming a flower bed on the top In case of installing with a sheet or the like, or attaching a waterproof protective layer with a cushion to prevent damage from impact when refilling the outer wall, the adhesive sheet for attaching due to the solid sheet is used separately. And extension of air occurs.

In particular, when the adhesive material is applied to the plywood section, the adhesive material is exposed for a long period of time, resulting in premature expansion and the following problems.

 In the waterproof construction process in the plywood section, prior to the waterproof construction, mortar is applied to smooth the curved and uneven surface formed on the surface of the underground mud wall, or the plane work is performed by fixing the cement panel on the front surface. Then, in order to prevent premature expansion from groundwater generated on the soil side, the solid sheet is fixed with a nail or an adhesive, and then a semi-solid adhesive expandable material is applied. Afterwards, meshes such as lattice type are attached to protect the adhesive material from the impact generated during the reinforcing steel reinforcement or after the concrete is poured.

However, the above construction method, first, the mesh layer is protruded to block the aggregates such as gravel when pouring concrete, and cement and sand is not filled, thereby forming a gap between the adhesive layer and the pour concrete, and second, the reinforcing bars Early expansion occurs due to contact with water and the waterproofing layer due to reinforcement process, formwork installation process, and excellentness in the parallax space until the concrete is placed.In case of water penetration after construction, the expansion pressure is significantly lowered, resulting in the waterproofing effect by water expansion. There was a problem of being lost.

In addition, cost smoothing and delay of air may occur during the smoothing operation using cement and panels.

On the other hand, in order to improve the hassle of attaching a solid waterproof sheet in the field in order to protect it after applying the adhesive material, as shown in Figure 1, the first waterproof layer (1) as a modified asphalt protective material and modified asphalt 2nd waterproof layer 2, the 3rd waterproof layer 3 which consists of an asphalt adhesive, the sheet | seat of the release paper 4, etc. are developed and used.

The first waterproof layer (1) is a surface of an asphalt sheet or a non-woven fabric sheet impregnated with asphalt, the composition of the second waterproof layer (2) is asphalt, process oil synthetic rubber (styrene butadiene styrene) calcium carbonate filler, water-soluble synthesis The modified asphalt layer and the third waterproofing layer 3 which are crosslinked while stirring and dispersing rubber and the like are crosslinked by mixing a water-soluble emulsion, an oily acid agent, bentonite, etc. in the two waterproofing layers, and the second waterproofing layer 2. It is applied to and sheeted.

However, the improved sheet as described above also does not solve the problem of premature expansion due to the exposed structure of the expanded layer containing bentonite, etc. Problems, such as a separate bonding process, are not solved at all.

The present invention devised to solve the above problems is to provide a waterproof layer for maximizing the function of the water-expandable material after construction by preventing premature hydration expansion in the first wall section as well as the general exterior wall waterproof section, in particular, construction Even though water penetrates due to breakage in the process and expands the water-expandable material, the internal structure of the adhesive water-expanded material maintains sufficient density to provide a waterproofing agent capable of maintaining the water-expanding effect as much as possible.

The purpose of the present invention is to provide a seismic waterproof sheet for the support layer for supporting the push of the adhesive material by the role of the central material and the upper load supporting the semi-solid adhesive material. It is also an object of the present invention to provide a waterproofing agent that can easily attach a protective sheet and a protective layer without a separate adhesive treatment by maintaining both sides self-adhesive function.

Another object of the present invention is to provide a uniform surface during waterproof construction on irregular wall surface in the joining section, to prevent the waterproof layer from being damaged by the impact of aggregates when placing concrete, and in particular, while preventing premature expansion, The waterproof material is filled up to the mesh layer surface of the grid, which prevents voids caused by the jamming of aggregates during concrete placement. It allows the existence of the cross section of the waterproof layer serves to maintain the waterproof performance as it is.

The above object is made by adding a process oil and a softening agent to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) to form a pressure-sensitive adhesive material having a fluidity, and then mixing a resin having a property of absorbing bentonite or water. A water-expandable waterproof layer having an adhesive property; A mesh net impregnated to be located at or near the one side or the other side of the waterproof layer, and having a mesh with a predetermined thickness and size, the mesh being made of synthetic resin or metal; A non-expandable material formed by attaching or applying to at least one of both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and softener to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) An adhesive protective layer made of; A first release paper attached to any one adhesive protective layer; It is achieved by a double-sided adhesive water-expandable waterproof sheet, characterized in that it comprises a second release paper attached to the other side of the water-expandable waterproof layer or the other adhesive protective layer.

Here, it is preferable that the mesh net is impregnated to the surface of the water-expandable waterproof layer or protruded to the upper surface of the mesh, so that the adhesive protective layer is impregnated to the matching line.

On the other hand, the above object, by adding a process oil and a softener to the rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) to form a pressure-sensitive adhesive material having a fluidity and then mixed with a resin having the property of absorbing bentonite or water A water-expandable waterproof layer made of an adhesive property; A mesh net impregnated to be located at or near the one side or the other side of the waterproof layer, and having a mesh with a predetermined thickness and size, the mesh being made of synthetic resin or metal; A non-expandable material formed by attaching or applying to at least one of both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and softener to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) An adhesive protective layer made of; A first release paper attached to one of the adhesive protective layers; It is achieved by a double-sided adhesive water-expandable waterproof sheet, characterized in that it comprises a film made of a synthetic resin material attached to the other side or the other one of the adhesive protective layer of the water-expandable waterproof layer.

Then, the mesh net is impregnated to the surface of the water-expandable waterproof layer, or after protruding to the upper surface of the surface, it is preferable to allow the adhesive protective layer to be impregnated to the matching line.

On the other hand, the above object is to remove the first release paper or the second release paper of the adhesive water-expandable waterproof sheet according to claim 1 attached to the surface of the plywood section or the structure to form a flat surface, the mesh net is water-expandable waterproof layer When biased or protruded to one side of the structure, the mesh net is disposed on the opposite side of the structure surface to secure the sheet by anchor bolts or nails; Filling the separation space formed between the waterproof sheet and the structure surface to remove the separation space by filling a powder or liquid filler; Forming the formwork at a distance from the watertight sheet, and by placing concrete between the watertight sheet and the form is achieved by the plywood section waterproofing method using a double-sided adhesive water-expandable waterproof sheet characterized in that it comprises a step. do.

In addition, the filler is a plywood wall using a double-sided adhesive adhesive water-expandable waterproof sheet, characterized in that made of any one of a powder material, such as sand, earth, remittal, bentonite, and a liquid material made by adding water to the powder material. It is also achieved by section waterproofing.

The adhesive protective layer attached to both sides of the water-expandable waterproof layer is attached to the wall surface of the joining wall and the surface of the concrete to be poured, and the adhesive protective layer is fixed to the mesh net. In the horizontal construction such as the floor surface as well as the construction, even if the load is concentrated on the part of the waterproof sheet, the thickness of the mesh is filled between the meshes of the mesh of constant thickness or the mesh is impregnated in the adhesive protective layer. Since the minimum waterproof layer can be secured has the effect that the waterproof performance can be preserved.

In particular, even if rainwater or the like penetrates into the parallax that occurs after the waterproofing layer is formed, concrete is prevented from invading the expanded portion by the adhesive layer, thereby preventing premature expansion. Since the intrusion of water to the expanded portion is suppressed by this, consolidation effect due to subsequent pouring and refilling of concrete can be obtained as it is. In addition, even when the waterproofing agent is attached, it is easy to attach the base surface as well as the sheet joints by the self-adhesive force without applying the primer and the adhesive treatment process.By attaching by self-adhesive force during the waterproof sheet and protective layer construction after the waterproofing layer construction, The effect is to produce no air pollutants.

In addition, by forming a flat surface by uniformly fixing the waterproof sheet on an irregular surface of the joining section, forming a space between the joining section and the waterproof sheet, and filling the filling space in the space between the filler and the concrete, By consolidation, the internal density of the water-expandable waterproof layer existing between the adhesive protective layers is further increased, thereby increasing the water-tightness.

Figure 2 is an exploded perspective view showing the structure of the double-sided adhesive water-expandable waterproof sheet according to the present invention, Figure 3 is a view showing the cross-sectional structure of the double-sided adhesive water-expandable waterproof sheet according to the present invention, Figure 4 Is a cross-sectional view showing a structure waterproofed by the plywood section waterproofing method according to the present invention.

Hereinafter, with reference to Figures 2 to 4 attached to the configuration and operation of the present invention.

The double-sided adhesive water-expandable waterproof sheet 110 according to the present invention may be divided into the first embodiment and the second embodiment, but the structural difference of the second release paper 105 of the first embodiment will be described below. In the present invention, the structure and operation of the second embodiment will be briefly described while describing the first embodiment.

First, as shown in FIG. 2, the process oil and the softener are added to rubber asphalt or butyl rubber to form an adhesive material having semi-solid fluidity.

The pressure-sensitive adhesive material is typically a pressure-sensitive adhesive material used in the waterproof sheet, the viscosity of the pressure-sensitive adhesive according to the composition has a slight difference depending on the composition ratio, but the detailed description will be omitted because the conventional composition ratio is applied. .

Therefore, the water-expandable waterproof layer 101 of the first embodiment is formed by mixing a resin having a property of absorbing bentonite or water to the adhesive material, and having a pressure-sensitive adhesive material.

Typically, the adhesive material serves to constrain an expandable material such as bentonite, and absorbs the adhesive material, bentonite, and water having an appropriate amount of viscosity so that the expandable material, such as bentonite, expands in contact with water. A resin having properties should be mixed with a material having an expansion structure through water absorption such as resin.

In other words, when there are more expandable materials such as bentonite than adhesive materials, the water-expandable property is improved to increase the expandable properties of bentonite, but the adhesive force is bound to bind the bentonite, so that the binding force is lowered, so that the tissue is broken and the waterproof performance is inferior. If there is more adhesive material than bentonite, the water-expandable property may be degraded, and thus the problem of inability to properly cope with water may occur. If bentonite is expanded, the internal density may be reduced.

Therefore, in the present invention, by increasing the composition ratio of the bentonite than the adhesive material to increase the maximum expansion effect, by forming an adhesive protective layer 102 made of a non-expandable material on both sides of the water-expandable waterproof layer 101, the primary water penetration When the adhesive protective layer 102 is blocked, and the adhesive protective layer 102 is damaged and water penetrates, bentonite of the water-expandable waterproof layer 101 is allowed to expand in response to water.

As a result, the problem of tissue detachment due to pre-expansion and over-expansion caused by exposure of the conventional water-expandable material was solved.

On the other hand, the structure of the sheet is filled with an expandable adhesive material in the mesh net 106 having a certain thickness and then the adhesive protective layer 102 is applied to both sides or on either side and the first, The second release paper 104 and 105 or the first release paper 104 and the film paper are attached to each other.

Here, the mesh net 106 may be a structure impregnated inside the waterproof layer 101, as shown in Figure 2, the waterproof layer 101 is a structure filled in the mesh eye 106a of the mesh net 106, It may be made to the extent that barely covers the surface of the mesh net 106.

Accordingly, the adhesive layer 102 having non-expandable properties is attached to one side or both sides of the mesh net 106 or the waterproof layer 101, wherein the protective layer 102 is as shown. It may be a relatively thick structure, but may have a thin structure, such as film paper, which can be variously adopted and changed in accordance with the intention of the manufacturer is not limited thereto.

In this case, when the mesh net 106 is attached to the adhesive protective layer 102, since the adhesive protective layer 102 is made of an adhesive material, the mesh net 106 is a water-expandable waterproof layer 101 and a protective layer 102. It may have a structure impregnated on both sides, as shown in Figure 2 may have a structure impregnated only in the water-expandable waterproof layer 101.

Accordingly, the water-expandable material of the water-expandable waterproof layer 101 protrudes into the mesh 106a of the mesh net 106 to have a structure exposed to the surface or in close contact with the protective layer 102.

As a result, an adhesive protective layer 102 is formed on one side or both sides of the water-expandable waterproof layer 101 of the first embodiment according to the present invention, and the mesh net protrudes from the water-expandable waterproof layer 101 on the adhesive protective layer 102. Since the adhesive protective layer 102 is attached to the surface even when the 106 is attached, as shown in FIGS. 2 and 3, the first release paper 104 and the second release paper 105 have one side and the other side, respectively. Attached to the adhesive management layer 102 to prevent contamination or damage to the foreign matter in the logistics management and work.

In addition, the adhesive protective layer 102 made of a non-expandable material can be formed on both sides of the water-expandable waterproof layer 101 as described above, thereby preventing contamination and premature expansion of the waterproof layer in advance. It is also preferable to.

On the other hand, the second embodiment according to the present invention has a configuration and structure in which the second release paper 105 is replaced with a film paper (not shown) in the same structure as the first embodiment.

In the second embodiment, the film paper in the horizontal construction, such as the bottom surface, when the load due to walking and mortar, etc. acts as the waterproof sheet 110, the adhesive protective layer 102 and the water-expandable waterproof layer made of relatively soft physical properties Since the 101 is pressed by the load, the cross section of the waterproof sheet 110 may be thinner, and thus the waterproof performance may be reduced, but the mesh net 106 has a certain thickness, and the mesh eye 106a has a certain amount of the adhesive protective layer. Since 102 and the water-expandable waterproof layer 101 are impregnated, the minimum waterproof layer 101 can always exist, so that the minimum waterproof performance can be ensured.

Hereinafter, the action and effect of the adhesive water-expandable waterproof sheet 110 according to the first and second embodiments of the present invention described above is waterproofing the lap wall using the double-sided adhesive water-expandable waterproof sheet 110 according to the present invention. We will explain the process in parallel.

As shown in FIG. 4, the sidewalls of the sump section have a CIP, a surface of a continuous wall such as a slurry wall, and an earth wall.

Conventionally, the cost is increased by filling the surface with mortar or fixing the panel to form a waterproof surface and then forming a waterproof layer. Also, when reinforcing reinforcement and formwork and placing concrete, The waterproof layer was torn or damaged, and concrete was installed after the grid-type mesh was fixed to the waterproof layer. When concrete aggregates were caught in the mash, cement and sand could not be filled tightly and voids were generated.

However, the present invention is to solve such a problem to prevent the damage of the waterproof layer due to the aggregate filling of the voids, as well as the aggregate during concrete pouring.

In other words, by applying the adhesive water-expandable waterproof sheet 110 to an irregular surface 107 such as a joining wall section, it provides a waterproofing method of a joining wall section to enable close filling of voids.

That is, the second release paper 105 of the double-sided adhesive water-expandable waterproof sheet 110 is removed and attached to the joining section or the surface 107 of the structure to form a flat surface, but the mesh net 106 is structured. Positioning the opposite side of the surface to perform the step of fixing the waterproof sheet with an anchor bolt or nail (not shown).

When the mesh net 106 is located on the opposite side of the structure surface 107, it means that the reinforcing bar is adjacent to the reinforcing area, and when the concrete 108 is placed, the concrete aggregate can be directly contacted. It is arranged as shown in FIG.

As described above, when the waterproof sheet 110 constitutes a flat surface relatively uniformly on the surface 107 of the structure, a powder or liquid filler 109 in a space formed between the waterproof sheet 110 and the surface of the structure. Fill the space to remove the space.

Here, the filler 109 is preferably composed of any one of a powder material, such as sand, earth and sand, remittal, bentonite, and a liquid material made by adding water to the powder material.

Therefore, it is sufficiently compacted by the moisture contained in the filler 109, the compacted filler 109 is to press the side of the waterproof sheet 110, at this time, the adhesive protective layer of the waterproof sheet 110 ( 102 and the water-expandable waterproof layer 101 is a force that tries to partially project through the mesh 106a of the mesh net 106.

On the other hand, after the waterproof sheet 110 is fixed as described above to produce the formwork 111 so that the concrete 109 can be placed at a predetermined distance spaced, bar may be reinforced as necessary. Since the concrete 108 may be poured in a dry state, the reinforcement work may be selectively adopted, and thus the detailed description thereof will be omitted.

Therefore, when the formwork 111 is completed, as described above, the step of pouring concrete between the waterproof sheet 110 and the formwork is performed, wherein the aggregate of the concrete 108 impacts the waterproof sheet 110. Even if it is applied, since the mesh net 106 is attached to the side of the waterproof sheet 110 to which the impact is applied, as shown in Figure 3, the impact by the aggregate is transmitted to the mesh net 106 The mesh net 106 is to protect the adhesive protective layer 102 and the water-expandable waterproof sheet 110 from the concrete 108 aggregate.

1 is a cross-sectional view showing the structure of a conventional waterproof sheet.

Figure 2 is an exploded perspective view showing the structure of the double-sided adhesive water-expandable waterproof sheet according to the present invention.

Figure 3 is a view showing a cross-sectional structure of the double-sided adhesive water-expandable waterproof sheet according to the present invention.

Figure 4 is a cross-sectional view showing a structure waterproofed by the plywood section waterproofing method according to the present invention.

<Description of the symbols for the main parts of the drawings>

101: water-expandable waterproof layer 102, 103: adhesive protective layer

104, 105: 1st, 2nd release paper

106: mesh network 107: side wall surface of the joining wall section

108: concrete 109: filler 110: adhesive water-expandable waterproof sheet

Claims (6)

It is made by adding process oil and softening agent to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) to form a pressure-sensitive adhesive material, and then mixing resin with the property of absorbing bentonite or water. An expansion waterproofing layer; A mesh net impregnated to be located at or near the one side or the other side of the waterproof layer, and having a mesh with a predetermined thickness and size, the mesh being made of synthetic resin or metal; A non-expandable material formed by attaching or applying to at least one of both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and softener to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) An adhesive protective layer made of; A first release paper attached to one of the adhesive protective layers; Double-sided adhesive water-expandable waterproof sheet, characterized in that it comprises a second release paper attached to the other side of the water-expandable waterproof layer or another adhesive protective layer. The method of claim 1, Double-sided adhesive water-expandable waterproof sheet, characterized in that the mesh net is impregnated to the surface of the water-expandable waterproof layer or protruded to the upper surface of the surface, so that the adhesive protective layer is impregnated to the matching line. It is made by adding process oil and softening agent to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) to form a pressure-sensitive adhesive material, and then mixing resin with the property of absorbing bentonite or water. An expansion waterproofing layer; A mesh net impregnated to be located at or near the one side or the other side of the waterproof layer, and having a mesh with a predetermined thickness and size, the mesh being made of synthetic resin or metal; A non-expandable material formed by attaching or applying to at least one of both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and softener to rubber asphalt or butyl rubber containing SBS (Styrene Butadiene Sytrene) An adhesive protective layer made of; A first release paper attached to one of the adhesive protective layers; Double-sided adhesive water-expandable waterproof sheet, characterized in that it comprises a film of a synthetic resin material attached to the other side of the water-expandable waterproof layer or another adhesive protective layer. The method of claim 3, Double-sided adhesive water-expandable waterproof sheet, characterized in that the mesh net is impregnated to the surface of the water-expandable waterproof layer or protruded to the upper surface of the surface, so that the adhesive protective layer is impregnated to the matching line. When the first release paper or the second release paper of the adhesive water-expandable waterproof sheet according to claim 1 is removed and attached to the surface of the earthquake wall, and the mesh net is biased or protruded to one side of the water-expansion waterproof layer, Securing the waterproof sheet with an anchor bolt or nail by placing the mesh net in position; Filling the spaced space formed between the waterproof sheet and the earthenware wall surface with powder or liquid filler to remove the spaced space; Forming a formwork at a distance spaced apart from the waterproof sheet, and placing the concrete between the waterproof sheet and the form, the plywood wall waterproofing method using a double-sided adhesive adhesive water-expandable waterproof sheet, characterized in that it comprises. The method of claim 5, The filler, Waterproofing method of plywood section using double-sided adhesive water-expandable waterproof sheet, characterized in that it is made of any one of powder material, such as sand, earth, remittal, bentonite, or a liquid material made by adding water to the powder material.

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