KR20100021831A - Waterproof sheet - Google Patents

Abstract

PURPOSE: An adhesive water swelling waterproof sheet, and a waterproofing method using the same are provided to prevent a waterproof sheet from being sagged by fixing an adhesive protection layer to a mesh. CONSTITUTION: An adhesive water swelling waterproof sheet comprises a water swelling waterproof layer(101), adhesive protection layers(102,103), a mesh(106), a first release paper(104), and a second release paper(105). Softener and process oil is added to rubber asphalt or butyl rubber, and an adhesive material is formed. The water swelling waterproof layer is formed by mixing the adhesive material and bentonite or high-absorbent resin. The adhesive protection layers are attached on both sides of the water swelling waterproof layer. The mesh is made of synthetic resin or a metal material, and attached on the upper adhesive protection layer. The first release paper is attached on the mesh. The second release paper is attached on the other surface of the water swelling waterproof layer.

Description

Adhesive water-expandable waterproof sheet and waterproof method using same

The present invention relates to an adhesive water-expandable waterproof sheet and a waterproofing method using the same. In particular, the water-tight waterproof layer and adhesiveness are fixed by filling a filler in the space between the irregular wall and the waterproof sheet, and fixing the waterproof sheet on the surface of the laminate wall and the structure. The protective layer consolidates toward the mesh of the mesh net, and the impact caused by aggregates, etc., generated during concrete pouring is prevented in the mesh net, so that the water-tight adhesive waterproof sheet and waterproof using the same prevent the tear layer from being torn or broken. It is about public law.

Conventional improved asphalt sheet is reinforced with low temperature by improving the elasticity, elongation and impact resistance by injecting oil and melting and bonding rubber to compensate for the weakness of low temperature, but still inflexibility due to cold Loss phenomenon also occurs, and even after construction, the responsiveness of the fundamental material to the cold is weak, resulting in the problem that the response to the structure is poor, causing cracking or breaking, and weakening of adhesion to the floor causes the phenomenon of lifting and leakage. It became.

In addition, the asphalt sheet waterproofing material is made only by the asphalt interlayer hot melt bonding by the torch burner, and it is difficult to expect the inherent properties of asphalt due to excessive heat. It is difficult to overcome the limitations of the material against temperature changes because it is not made.

On the other hand, the recently marketed self-supporting butyl sheet is butyl rubber used as a raw material for butyl sheet is three times more expensive than styrene rubber used in general asphalt, and it is difficult to be generalized as a expensive product compared to general improved asphalt. It is difficult to generalize in terms of productivity and facilities, so it is difficult to construct universally.

In addition, such standardized asphalt sheet is easily lifted or broken from the structure in a completely cured state, and loses its waterproofing ability when lifted and broken, so that the asphalt primer is applied by a double compounding method to overcome the limitation of these materials. Although a semi-solid asphalt, such as a turboseal or mastic, is applied to the concrete at the bottom of the floor, the installation method is applied. It is inconvenient due to the need of, and it is difficult to uniformly apply or even the part which is not applied is often difficult to achieve the expectation as a perfect waterproofing material.

On the other hand, to improve the above problems, as shown in Figure 1, the first waterproofing layer (1) as a modified asphalt protective material, the second waterproofing layer (2) made of modified asphalt, the third waterproofing layer (3) of asphalt adhesive ) And a release paper (4).

The first waterproof layer 1 is an asphalt sheet or a non-woven fabric sheet impregnated with asphalt, and the composition of the second waterproof layer 2 on the surface thereof is made of asphalt, process oil synthetic rubber (styrene butadiene styrene), fillers such as calcium carbonate, and water-soluble. The modified asphalt layer and the third waterproofing layer (3) crosslinked by mixing and dispersing synthetic rubber and the like are crosslinked by mixing a water-soluble emulsion, an oily acid agent, bentonite, and the like in the two waterproofing layers, and the second waterproofing layer (2). ) To form a sheet.

However, the improved sheet as described above does not have watertight adhesion with the asphalt-impregnated nonwoven fabric, so defects in the joint portion occur, and sufficient adhesion is obtained by melting the cured sheet in a cold season such as winter. It did not completely solve the fundamental problem that causes leakage. In addition, the waterproof effect due to the expansion pressure is halved due to the expansion phenomenon due to premature hydration before the compression situation through the backfill of the absorbent material such as bentonite during wet surface construction.

In addition, in the case of the waterproofing material in which the conventional adhesive material and the expandable material are mixed to give functionality such as a self-healing function, the construction method is manufactured in a semi-solid state and applied to the concrete surface, and then laid with a sheet. It is inconvenient due to manpower consumption, workability inconvenience, and much time required for coating, and it is difficult to apply uniformly, or it is often separated from each other by forming an air layer between the adhesive material and the sheet attached to the upper part. Generated and difficult to achieve as a complete waterproofing material.

In particular, in the case of constructing the waterproofing layer first and then placing the structural concrete, such as in the plywood section, the surface of the waterproofing layer is exposed for a long time, which causes problems due to premature expansion.

Looking at this in detail.

When constructing the plywood section, mortar may be used to secure the smoothness on the uneven surface formed on the continuous surface of the underground continuous wall, or plan work shall be performed by fixing the cement panel to the front.

After fixing the asphalt sheet to the surface by heat bonding or nails, etc. and then applying the adhesive expandable material is attached to the grid mesh to protect the waterproof layer from the impact generated during the reinforcing fixing step or concrete pouring.

However, this construction method provides a leakage path by first forming a void by protruding mesh layer and being blocked by aggregate such as gravel when concrete is poured and not filling with cement and sand. Second, until reinforcement process, formwork installation, and concrete casting Due to the excellent parallax space, water and the waterproofing layer are in contact with each other, and early expansion is performed, and when water penetrates after construction, the expansion pressure is significantly lowered, thereby losing the waterproofing effect due to water expansion.

In addition, when unevenness occurs during the smoothing operation using cement or the like or when the panel is damaged due to the concrete placing pressure and impact, the consolidation effect is halved and the waterproof ability is halved.

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 if water penetrates due to breakage in the process and the water expandable material expands, the internal structure of the tacky water expandable material maintains sufficient density to provide a waterproof material capable of maintaining the water expansion effect as much as possible.

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 aggregate impact during concrete pouring, and in particular, the grid mesh of the sheet As the waterproofing material is filled up to the surface of the net, it prevents voids caused by the jamming of aggregates during concrete laying, and there can be a minimum of the cross section of the waterproof layer due to the supporting force of the mesh net even if pressure is applied at any place even during the construction. To provide the purpose of maintaining the waterproof performance.

The above object is, by adding a process oil and a softener to rubber asphalt or butyl rubber to form a pressure-sensitive adhesive material having a fluidity and then mixed with bentonite or superabsorbent resin, and a water-expandable waterproof layer having an adhesive property; An adhesive protection layer formed by attaching or applying to both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and a softener to rubber asphalt or butyl rubber; a first release paper attached to the adhesive protective layer; Wow; It is achieved by the adhesive water-expandable waterproof sheet, characterized in that it comprises a second release paper layer attached to the other side of the water-expandable waterproof layer.

In addition, the above object is, by adding a process oil and a softener to rubber asphalt or butyl rubber to form a pressure-sensitive adhesive material having a fluidity and then mixed with bentonite or superabsorbent resin, and a water-expandable waterproof layer having an adhesive property; An adhesive protective layer formed by attaching or applying to both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and a softener to rubber asphalt or butyl rubber; Is attached to be impregnated on one side of the protective layer, a mesh of a predetermined thickness and size is formed and mesh net made of synthetic resin or metal material; A first release paper attached to the adhesive protective layer protruding into the mesh of the mesh net; It is also achieved by an adhesive water-expandable waterproof sheet comprising a film made of a synthetic resin material attached to the other side of the water-expandable waterproof layer.

On the other hand, the above object is to remove the second release paper of the adhesive water-expandable waterproof sheet and attach to the surface of the plywood section or the structure to form a flat surface, the mesh net is located on the opposite side of the structure of the anchor bolt Or fixing the waterproof sheet with a nail; 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 a formwork at a distance spaced apart from the waterproof sheet, and is also achieved by the waterproofing method using the adhesive water-expandable waterproof sheet comprising the step of pouring concrete between the waterproof sheet and the formwork.

In addition, the filler 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.

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 is generated after the waterproofing layer is formed, concrete is prevented from invading the expanded portion by the adhesive layer, thereby preventing premature expansion and adhesion even if there is water on the surface of the structure in the flat portion construction. By suppressing the intrusion of water to the expanded portion by the layer, it has the effect that the consolidation effect due to subsequent pouring and refilling of concrete can be obtained as it is.

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 present between the adhesive protective layers is further increased, thereby increasing the watertightness.

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

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

Adhesive water-expandable waterproof sheet 110 according to the present invention can be divided into the first embodiment and the second embodiment, the structural difference is to replace the second release paper 105 of the first embodiment to be described later to replace the film paper As such, the structure and operation of the second embodiment will be briefly described with reference to the first embodiment.

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

The pressure-sensitive adhesive material is usually a pressure-sensitive adhesive material used in the waterproof sheet, the viscosity of the pressure-sensitive adhesive according to the above composition is slightly different 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 made by mixing bentonite or a super absorbent polymer with the adhesive material, and the adhesive material is mixed and thus has an adhesive quality.

Typically, the adhesive material serves to bind bentonite grains, and an appropriate amount of the adhesive material and bentonite should be mixed so that bentonite can expand fluidly when bentonite is in contact with water and expands.

That is, when the bentonite is more than the adhesive material, the water expandability is improved, and the expandability of the bentonite is increased. However, the adhesive material is hardly bound to bind the bentonite, so the tissue is broken and the waterproof performance may be lowered. When more adhesive materials are present, there is a problem that the water-expandable property can not be properly coped with infiltration of water, and when the bentonite is expanded, the internal density can 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 attaching the adhesive material on both sides of the water-expandable waterproof layer 101 by configuring the adhesive protective layer (102, 103) When the adhesive protective layer 102 blocks primary water penetration and the adhesive protective layer 102 is damaged and the water penetrates, the bentonite of the water-expandable waterproof layer 101 may expand in response to water. . Therefore, the problem of tissue detachment due to pre-expansion and over-expansion due to the exposure of the conventional water-expandable material was solved.

Meanwhile, a mesh net 106 having a constant thickness and a mesh eye 106a formed thereon is attached to one of the adhesive protective layers 102 on both sides.

In this case, when the mesh net 106 is attached to the adhesive protective layer 102, the mesh net 106 has an impregnated structure because the adhesive protective layer 102 is made of an adhesive material.

Therefore, the adhesive material of the adhesive protective layer 102 has a structure that protrudes into the mesh 106a of the mesh net 106 and is exposed to the surface.

As a result, the adhesive protective layers 102 and 103 are formed on both sides of the water-expandable waterproof layer 101 of the first embodiment according to the present invention, and even if the mesh net 106 is attached to the adhesive protective layer 102, the adhesive protective layer is provided. Since 102 is exposed to the surface, the first release paper 104 and the second release paper 105 are attached to one side and the other side, respectively, as shown in FIGS. The protective layers 102 and 103 can be prevented from being contaminated or damaged with foreign matter.

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.

When the film paper in the second embodiment acts as the waterproof sheet 110 in the horizontal construction such as the bottom surface, the adhesive protective layer 102 and the water-expandable waterproof layer 101 which are relatively soft in physical properties are subjected to the load. Since the cross-section of the waterproof sheet 110 may be thinned, the waterproof performance may be reduced, but the mesh net 106 has a certain thickness, and the mesh 106a has a certain amount of the adhesive protective layer 102 and the water expansion. Since the waterproof layer 101 is impregnated, the minimum waterproof layer 101 can always exist, so that the minimum waterproof performance can be ensured.

Hereinafter will be described the waterproofing method of the plywood section using the adhesive water-expandable waterproof sheet 110 according to the present invention to the action and effect of the adhesive water-expandable waterproof sheet 110 according to the first and second embodiments of the present invention. I will explain 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, an earth wall, and the like, as shown in FIG. 4.

Conventionally, the cost is increased by forming a waterproof surface after filling the surface with mortar or fixing a panel, and forming a waterproof surface. Also, by forming reinforcing bar and formwork and placing concrete, the impact during concrete pouring As the waterproof layer is torn or broken, the concrete layer is fixed after the grid-type mesh is fixed to the waterproof layer. When concrete aggregates are caught in the mesh, cement and sand are not filled in tightly and voids are generated.

The present invention is to solve such a problem to prevent the damage of the waterproof layer due to the aggregate filling of the air gap as well as the tight filling of the voids.

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 adhesive water-expandable waterproof sheet 110 is removed and attached to the joining section or the surface 107 of the structure so that a flat surface is formed, and the mesh net 106 is opposite to the structure surface. Positioned so as 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 installed 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 adhesive water-expandable waterproof sheet according to the present invention.

Figure 3 is a view showing a cross-sectional structure of the 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 (4)

A water-expandable waterproof layer formed by adding a process oil and a softener to rubber asphalt or butyl rubber to form an adhesive material having fluidity, and then mixing bentonite or a super absorbent resin and having an adhesive property; An adhesive protective layer formed by attaching or applying to both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and a softener to rubber asphalt or butyl rubber; Is attached to be impregnated on one side of the protective layer, a mesh of a predetermined thickness and size is formed and mesh net made of synthetic resin or metal material; A first release paper attached to the adhesive protective layer protruding into the mesh of the mesh net; 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. A water-expandable waterproof layer formed by adding a process oil and a softener to rubber asphalt or butyl rubber to form an adhesive material having fluidity, and then mixing bentonite or a super absorbent resin and having an adhesive property; An adhesive protective layer formed by attaching or applying to both sides of the water-expandable waterproof layer to form another waterproof layer, and adding process oil and a softener to rubber asphalt or butyl rubber; Is attached to be impregnated on one side of the protective layer, a mesh of a predetermined thickness and size is formed and mesh net made of synthetic resin or metal material; A first release paper attached to the adhesive protective layer protruding into the mesh of the mesh net; Adhesive water-expandable waterproof sheet, characterized in that it comprises a film made of a synthetic resin material attached to the other side of the water-expandable waterproof layer. The second release paper of the adhesive water-expandable waterproof sheet according to claim 1 is removed and attached to the surface of the plywood section or the structure so that a flat surface is formed, and the mesh net is disposed opposite the surface of the structure to anchor bolts or nails. Fixing the waterproof sheet; 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 a formwork at a position spaced apart from the watertight sheet, and waterproofing method using the adhesive water-expandable waterproof sheet comprising the step of pouring concrete between the waterproof sheet and the formwork. The method of claim 3, The filler, Waterproofing method using the adhesive water-expandable waterproof sheet, characterized in that made of any one of the powder material, such as sand, earth, remittal, bentonite and liquid material by adding water to the powder material.

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