KR20130019653A - Urethane waterproof membrane structure comprising fiber reinforced mesh, and construction method thereof - Google Patents

Abstract

PURPOSE: A urethane waterproofing structure including a fiber-reinforced mesh layer and a manufacturing method thereof are provided to reduce expansion and fracture and to enhance an adhesive force of urethane. CONSTITUTION: A urethane waterproofing structure including a fiber-reinforced mesh layer includes a first waterproofing layer(A) formed in a bottom plane(10a) of a structure and a second waterproofing layer(B) formed on the top of the first waterproofing layer. The waterproofing layer includes a non-woven fabric layer having a non-woven fabric(12) in the bottom plane of a structure and a first waterproofing coating layer having a first waterproofing coated on the top of the non-woven fabric layer. The second waterproofing layer includes a reinforced-fiber mesh layer(14) having a reinforced-fiber mesh formed on the top of the first waterproofing film coated layer, a second waterproofing coating layer having a second waterproofing film coated on the top of the reinforced-fiber mesh layer and a third waterproofing coating layer having a third waterproofing film coated on the top of the second waterproofing film coated layer.

Description

Urethane waterproof membrane structure comprising fiber reinforced mesh, and construction method

The present invention relates to a urethane coating waterproof structure including a fiber reinforced mesh layer and a construction method thereof, and more particularly, a lifting phenomenon that may occur in coating a urethane waterproofing agent on a finishing layer of a structure formed of concrete or other solids, Urethane including fiber reinforced mesh layer with improved durability that can be applied to all fields of new construction and renovation, which is designed to reduce coating adhesion, bubble generation, and minimize the destruction of waterproof layer after construction. It relates to a coating waterproof structure and its construction method.

In general, civil and building structures constructed from inorganic materials, such as concrete or mortar, or other solids, will age and crack over time.

In particular, the crack may be accelerated in a place subject to external resistance such as weather change or frequent vibration, and the leakage of water and condensation on the crack may reduce the durability of civil and building structures.

In order to solve this problem, in the construction of civil and building structures, a waterproofing layer may be installed on a roof or an outer wall of a building exposed to external resistance, and a waterproofing layer may be repaired even on a base of a cracked structure.

As the waterproofing method as described above, generally, a sheet waterproofing method for constructing a sheeted waterproofing material on a base of a structure, a coating film waterproofing method for applying a liquid waterproofing material, and a method of forming a waterproofing layer in combination thereof have been developed.

First, the sheet waterproofing method is generally used by overlapping or bonding sheets of synthetic polymer, polyethylene, soft polyvinyl chloride, ethylene vinyl acetate copolymer, synthetic rubber, etc., which is easy to construct and shorten construction time, but concrete Very low adhesion to the structure, such as not only the inconvenience of the seam between the seat construction, but also after the construction of the joints of the sheet joints fall off, such as defects are difficult to ensure a solid waterproof.

Next, the coating waterproofing method is a waterproofing method using the remaining film by applying liquid remaining waterproof material such as asphalt, rubber paint dissolved in volatile solvent, reactive hardening resin on the base surface of the structure, and the thickness of the waterproof layer. Is relatively constant, and some coating materials contain inherent stretching force, which has the advantage that the coated film is resistant to cracking of the structure.

However, in the case of rubber paint, construction is easy and coloration is free, but care should be taken in the occurrence of fire or ventilation due to the use of volatile solvents. It is difficult to construct, and it is difficult to adequately cover long-term cracks generated in the structure by the stretching force of the waterproof coating made of a single liquid coating material. In this case, it also affects the waterproofing layer, which may cause leakage and condensation due to cracks.

In addition, since the coating film waterproofing method is generally made by wet construction, the construction work is cumbersome and inconvenient, and a lot of construction costs are spent, as well as the work time is extended, the air is long.

On the other hand, among the coating film waterproofing methods, construction is simple and the most commonly used method is the exposed film waterproofing method using urethane. Since the liquid urethane waterproofing agent is cured and a waterproof coating film is formed, a seamless coating film can be formed. It also has the advantage of excellent adhesiveness, and because it is a front contact method, it is widely used as a waterproofing material because it is easy to repair when a defect occurs.

In addition, polyurethane has good elasticity to withstand the background cracks of concrete structures less than 1mm, has excellent strength, adhesion, and excellent elongation, so it can be used for various purposes, and it has strong resistance to external shock and building vibration. Doing.

However, due to the nature of urethane, when the dry state of the concrete structure surface is bad and the moisture content is high, the adhesive strength is not good, and carbon dioxide is generated by reaction with moisture, which may cause defects such as pinholes as it is discharged to the surface.

In addition, even when the thickness of the urethane coating film is too thin or less than 1mm, or when it is applied at high temperature, the curing speed is increased so that the bubbles generated during the work are not broken, and the bubbles are formed as it is, which may cause lifting, swelling and breakage. Over time, deterioration may occur, leading to failure.

In addition, if the shape of the concrete structure is curved or the surface is not smooth, the urethane adhesive force may be greatly reduced, and it may be vulnerable to impact and tension, causing the waterproof layer to be destroyed and leaking again. There is this.

On the other hand, due to the peculiarity of urethane, the adhesion with other waterproofing agents is poor, and thus, when the other waterproofing agents are installed before the waterproofing of urethane, there may be a problem in adhesion, and thus, the peeling phenomenon of the adhesive surface may become severe as time passes. In particular, since the peeling of the coating film may occur severely due to the difference in the heat resistance of the urethane and other waterproofing agents in the summer high temperature phenomenon, an improvement is required.

As described above, in recent years, a composite waterproof method for solving problems that may occur in a waterproof method using a sheet or a waterproof method using urethane has been studied.

The problem to be solved by the present invention is to solve the problems of the prior art described above, to reduce the swelling and breakage that can occur when the waterproofing of the urethane coating film, the adhesion of the urethane that can be reduced when the surface condition is not smooth Its purpose is to strengthen it.

In addition, another object of the present invention is to solve the leakage caused by the crack of the waterproof layer which may be caused by the crack of the structure bonded to the waterproof layer after construction, and to improve the wear resistance and weather resistance.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

The present invention to solve the above-mentioned problems, the first waterproof layer formed on the base surface of the structure formed of concrete or other solid content; And a second waterproof layer formed on the first waterproof layer, wherein the first waterproof layer comprises: a nonwoven fabric layer formed by installing a nonwoven fabric on a base surface of the structure; And a first waterproof coating layer formed by applying a first waterproof coating on the nonwoven fabric layer, wherein the second waterproof layer comprises: a reinforcing fiber mesh layer formed by installing a reinforcing fiber mesh on the first waterproof coating; A second waterproof coating layer formed by applying a second waterproof coating on the reinforcing fiber mesh layer; And a third waterproof coating layer formed by applying a third waterproof coating on the second waterproof coating.

In addition, the present invention provides a waterproof film structure, characterized in that the nonwoven layer is non-adhesive on the base surface of the structure, the void layer is formed between the base surface and the nonwoven layer.

In addition, the present invention provides a waterproof film structure, characterized in that the reinforcing fiber mesh layer using a glass fiber mesh or fiber reinforced plastic mesh material.

In addition, the present invention is the reinforcing fiber mesh layer and the second waterproofing coating layer formed by applying a second waterproofing coating on the reinforcing fiber mesh layer, the second waterproofing coating penetrates the upper portion of the reinforcing fiber mesh layer to the reinforcement It fills up to the thickness of the fiber mesh layer or less, and a second waterproof coating is applied to the upper surface of the reinforcing fiber mesh layer to provide a waterproof coating structure, characterized in that a urethane coating film having a predetermined thickness is formed.

In addition, the present invention comprises the steps of forming a first waterproofing layer on the base surface of the structure; And forming a second waterproof layer on the first waterproof layer, wherein the forming of the first waterproof layer comprises: installing a nonwoven layer on a base surface of the structure; And applying a first waterproof coating layer on the nonwoven fabric layer, wherein the forming of the second waterproof layer includes: installing a reinforcing fiber mesh layer on the first waterproof coating layer; Coating a second waterproof coating on the reinforcing fiber mesh layer; And it provides a urethane coating waterproof construction method comprising the step of applying a third waterproof coating on the second waterproof coating.

In addition, the present invention comprises the steps of constructing the first waterproofing layer and the second waterproofing layer, the bottom surface of the structure is extended to the inner wall by folding at the corner point leading to the side wall; V-cutting said first waterproofing layer and said second waterproofing layer in the transverse direction at a predetermined height of the side wall; Bending and inserting a waterproof silicon filling and stainless steel sheet into the v-cut groove; And it provides a urethane coating waterproof construction method using the fiber-reinforced mesh layer further comprising the step of coating the waterproof silicon to the corner portion is inserted into the stainless steel sheet.

The waterproofing method including the urethane according to the present invention as described above has an effect of reducing the swelling phenomenon and the occurrence of breakage that may occur when the urethane coating film waterproof.

In addition, the present invention has the effect of improving the wear resistance and weather resistance of the urethane, and to increase the adhesive force of the urethane which can be reduced when the surface state of the structure to be applied is not smooth.

In addition, the present invention has the effect of reducing the leakage phenomenon due to the crack of the waterproof layer which may be caused by the jungle phenomenon of the waterproof layer and the crack of the structure bonded to the waterproof layer after construction.

1 is a cross-sectional view showing a waterproof layer constructed in accordance with an embodiment of the present invention.
2 is a flowchart of a waterproof construction step according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing a waterproof roof structure having a side wall repaired according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the bonded state and the joint portion of the nonwoven fabric or reinforcing fiber mesh layer according to an embodiment of the present invention.
5 is a photograph of a glass fiber mesh constituting the reinforcing fiber mesh layer according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. &Quot; and / or "include each and every combination of one or more of the mentioned items. ≪ RTI ID = 0.0 >

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" And can be used to easily describe a correlation between an element and other elements. Spatially relative terms should be understood in terms of the directions shown in the drawings, including the different directions of components at the time of use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

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

The present invention is an exposed coating waterproofing method using a composite of a reinforcement and a urethane waterproofing material in the finishing layer of the structure formed of concrete or other solids, Figure 1 is a cross-sectional view showing a waterproofing layer constructed in accordance with an embodiment of the present invention, 2 is a flowchart of a waterproof construction step according to an embodiment of the present invention.

1 and 2, the waterproof method comprising a urethane according to an embodiment of the present invention is ready for construction (S10), roughening and reinforcing work (S20), non-woven fabric installation (S30), the first waterproof coating film coating ( S40), the reinforcing fiber mesh layer installation (S50), the second waterproofing film coating (S60), it may be made of a third waterproofing film coating (S70) step.

First, prior to the waterproofing coating film according to an embodiment of the present invention, the base surface 10a of the concrete structure 10 is flat and dry enough without any foreign matters that may interfere with the adhesion of the waterproof layer. (S10)

If the surface state of the base surface (10a) is uneven, pruning, mortar or primed plastering should be carried out, the point where the crack is formed due to the damage of the building or damage to the existing waterproof layer may be preceded by reinforcement work (S20).

On the other hand, the step S10 ~ S20 can be omitted depending on the surface state of the structure.

Next, when the construction preparation, roughening and reinforcement work is finished, the nonwoven fabric 12 is installed flat on the base surface 10a. (S30)

At this time, the nonwoven fabric used may be a non-woven fabric of a generally used standard of about 100cm in width, 3mm in thickness or less, and the overlapping paste 12 'at the overlapping portion to be attached is maintained at 10cm or more, and the overlapping paste Silver can be bonded using a urethane waterproof agent (see Fig. 4).

However, in the present invention, the material of the first waterproofing layer (A) is not limited to the nonwoven fabric, and if the material has a thickness of 5 mm or less that can improve the adhesive strength with the urethane coating waterproofing agent, which is the first waterproofing film (13), acrylic, synthetic polymer system In addition to the sheet, various substrates may be used.

Similarly, in the present invention, the bonding agent of the layered chip paste is not limited to the urethane middle waterproofing agent, and the layered pool can be bonded by various bonding methods such as bond, silicon or thermocompression method as a general room temperature adhesive.

Next, a waterproofing agent is coated on the nonwoven fabric 12 to form a first waterproof coating 13. (S40)

In this case, the first waterproof coating layer 13 may be formed by coating a urethane intermediate waterproofing agent thinly by using a roller, a spray, a brush, a plastering knife, or the like.

On the other hand, when the urethane waterproofing material is directly bonded to the base surface of concrete or other solid structure in the conventional invention, the adhesive strength of the urethane waterproofing agent itself to the concrete is good, but cracks on the concrete base surface of 1 mm or more, or external impact after construction The tearing and chipping of the waterproof layer could occur.

In addition, even if the concrete structure contains only a small amount of water, urethane reacts with moisture to generate carbon dioxide along with the evaporation of moisture contained in the concrete structure, so that bubbles and pinholes may occur in the urethane waterproof layer. It is separated from the surface without adhering to it.

Since the urethane waterproofing layer is so weak to impact and tension, it may eventually lead to breakage of the waterproofing layer, which may cause leakage and rework.

However, in the present invention as described above in step S30 ~ S40, the urethane waterproof layer is formed on the nonwoven fabric after the nonwoven fabric is installed non-adhesive without directly applying a urethane waterproof layer to the concrete structure.

As a result, the gap between the base surface 10a and the nonwoven fabric 12 is minutely formed to form the void layer 11.

This is because the foam and pinhole phenomena of urethane waterproof layer due to evaporation of moisture that may be contained in concrete structures or carbon dioxide generation, and non-woven fabrics with some hygroscopicity are stable. There is a corresponding effect.

In addition, even if there is a crack in the structure after construction, there is a nonwoven fabric 12 and a void layer 11 between the urethane first waterproofing film 13, so that the effect of direct cracking on the urethane first waterproofing film 13 is not affected. There is.

On the other hand, as described above, since the gap between the concrete base surface 10a and the nonwoven fabric 12 is separated without bonding to form the void layer 11, the first waterproof layer (A) is a bubble, pinhole phenomenon and The effect of preventing cracks, which are influenced by cracks, may be obtained, but in comparison thereto, the first waterproof layer A may be vulnerable to the impact and tension of the first waterproof layer A and the outside except for the crack of the mother.

In order to compensate for the vulnerability that may occur as described above, it is preferable to form a second waterproof layer (B) on the first waterproof layer (A).

According to the present invention, the second waterproof layer B may be composed of a reinforcing fiber mesh layer 14, a second waterproof coating 15, and a third waterproof coating 16.

First, the configuration of the reinforcing fiber mesh layer 14 according to the embodiment of the present invention, using a glass fiber (Fiber Glass), fiber reinforced plastics (FRP) on the upper portion of the first waterproofing layer (A) It can be composed of a reinforcing fiber mesh layer 14 made of a mesh (Mesh) material. (S50)

At this time, the reinforcing fiber mesh layer 14 to be installed is to maintain the width (w) of the lap pool at the point of attaching to more than 10cm, it is possible to join the lap pool 14 'by using a urethane middle water repellent, The method is the same as that of the nonwoven fabric 12 mentioned above (refer FIG. 4).

6 is a photograph of a glass fiber mesh (Fiber Glass Mesh) constituting the reinforcing fiber mesh layer according to an embodiment of the present invention.

Fiber glass mesh (Fiber Glass Mesh) is a material of the reinforcing fiber mesh layer 14 is woven like a net by spinning the elongated glass fiber, and the surface is coated with acrylic resin or nylon resin to increase alkali resistance, fiber It has elongation and elasticity as a material and has excellent tensile strength than steel, and has excellent electric insulation effect.

In addition, it has excellent dimensional stability because of little expansion or expansion due to heat, chemical resistance, and excellent bonding ability with various resins and organic substances, so it has excellent compatibility, and it is nonflammable, so it does not emit smoke and toxic substances even in fire. It is also a suitable material as a material.

As for the specification of the glass fiber mesh constituting the reinforcing fiber mesh layer 14 according to the embodiment of the present invention, referring to FIG. 6, the mesh side spacing g is 3.2 mm × 3.2 mm, width 98 cm, and tension. The strength has 27 kg / cm 2.

The tensile strength of the polyester nonwoven fabric used as a general reinforcing material is 13.87 kg / ㎠, it has a tensile strength of 27kg / ㎠ approximately twice that.

The glass fiber mesh protects the first waterproofing layer (A), while being a fiber material and having a high tensile strength, there is little deformation and breakage due to external impact, and excellent chemical resistance and dimensional stability, so that it does not wear well and expands due to heat. It is advantageous to use as a reinforcement of the waterproof layer because there is almost no expansion.

On the other hand, the fiber reinforced plastics (FRP: Fiber Reinforced Plastics) that can be used as another material of the reinforcing fiber mesh layer 14 of the present invention is to improve the mechanical strength by incorporating a fiber base in a synthetic resin, light, durable, It has excellent impact resistance, abrasion resistance, etc., does not rust and is not deformed by heat, and is easy to process.

The fiber reinforced plastic is divided into glass fiber reinforced plastic (G-FRP: glass fiber reinforced plastic) incorporating glass fiber and carbon fiber reinforced plastic (C-FRP) incorporating carbon fiber, in particular unsaturated poly It is desirable to use glass fiber reinforced plastic (G-FRP) which is made of reinforced fiberglass processed to 0.1mm or less in diameter to the ester, which is strong against external impact and has a very high tensile strength. .

In the next step, the urethane waterproofing agent is applied to the upper surface of the reinforcing fiber mesh layer 14 to form a second waterproof coating 15. (S60)

In this case, referring to the partially enlarged view of the second waterproofing layer B of FIG. 1, the second waterproofing film 15 is sufficiently filled with a urethane intermediate waterproofing agent between the voids of the reinforcing fiber mesh layer 14. Spread it to the top of the mesh layer 14 (15a), and after it is sufficiently dried, spread evenly with a roller, a spray, a brush, a plaster knife, etc. so as to have a thickness of 1mm or more (15b).

In this case, in the conventional sheet method, bubbles are generated when spreading with a roller, spray, brush, plaster, etc. in the process of applying the urethane waterproofing agent on the sheet, thereby reducing the function of the waterproof layer.

However, in the present invention, when the urethane intermediate waterproofing agent is applied to the upper portion of the reinforcing fiber mesh layer 14, it is filled while being penetrated between the pores of the mesh form to suppress the generation of bubbles that may occur during the application and the waterproofing agent in the form of bubbles The effect of preventing the hardening can be satisfied to satisfy the function as a more improved waterproof layer.

On the other hand, due to the peculiarity of urethane, the adhesive strength with other waterproofing agents is poor, so when applied together with other waterproofing agents, there may be a problem in adhesion due to the difference in heat resistance and physical properties of urethane and other waterproofing agents. Peeling phenomenon may increase.

However, as described above, the first waterproof coating 13 is coated with a urethane intermediate waterproofing agent (S40), and the second waterproof coating 15 is also a urethane intermediate waterproofing agent penetrating the reinforcing fiber mesh layer 14 to the Since the first waterproof coating 13 is applied to the upper surface, the urethane middle waterproofing agent of the same physical property serves as an adhesive for bonding the first waterproofing coating 13 and the reinforcing fiber mesh layer 14.

As a result, the first waterproofing layer A including the first waterproofing film 13 and the second waterproofing layer B including the reinforcing fiber mesh layer 14 in contact with the first waterproofing film 13 are naturally bonded. It is effective.

Next, when the second waterproofing film 15 is sufficiently dried, the construction of the waterproofing layer is completed by forming a third waterproofing coating 16 by applying a urethane topcoat waterproofing agent to the upper surface of the second waterproofing coating film. At this time, the third waterproofing film 16 serves as a protective film of the second waterproofing layer (B). (S70)

On the other hand, when the factory of the waterproof layer is a rooftop with sidewalls or railings, it is preferable to extend the construction of the waterproofing layer from the bottom to a predetermined height of the sidewalls or the side surfaces of the railings.

The construction method as described above will be described with reference to FIG. 3.

3 is a cross-sectional view showing a roof-shaped waterproof structure having a sidewall according to an embodiment of the present invention, in which a crack (c) is generated in the base of the structure and the existing waterproof layer 10b is damaged and repaired.

First, the waterproof layer is constructed in accordance with the above-described step S10 to S70 from the rooftop surface, and at the corner point where the rooftop bottom surface ends and extends to the sidewall, the waterproof layer is folded from the corner and extended to a predetermined height of the sidewall.

The extension can be performed by using a nonwoven fabric and a reinforcing fiber which can be folded as the waterproofing layer base material of the present invention, and by coating the liquid urethane resin.

Next, it fills horizontally in the part which becomes about 30 cm or more where the height h of a rooftop side wall is considered suitable.

Next, the cut position is v-cut at least 2 cm of cutting depth (d) with a reinforced concrete cutter.

As described above, the water-resistant silicon 17 was filled in the cut portion, the stainless steel sheet 18 was bent at an appropriate angle θ by 90 degrees or more, and cut at intervals within 1 m in the transverse direction of the side wall. Insert it in place to fix it.

At this time, referring to the partially enlarged view of FIG. 3, when the side wall of the stainless steel sheet 18 is inserted, the stainless steel sheet 18 is bent at least 90 degrees so that the upper surface a is raised above the position of the bent portion. In addition, rainwater should not penetrate the concrete structure and lose its waterproof function.

In addition, the side (b) of the stainless steel sheet 18 is in full contact with the upper surface of the second waterproofing layer (B) to increase the waterproof effect.

On the other hand, the stainless steel sheet 18 is suitable for finishing the waterproof layer end portion because it is a rust-free and hard material, but the material, shape and installation interval of the stainless steel sheet in the present invention is not limited.

Next, the waterproof silicon 17 is coated on the corner portion into which the stainless steel sheet 18 is inserted to finish the construction of the rooftop railing waterproofing layer.

According to the waterproofing method including the urethane of the present invention as described above, unlike the prior art, the urethane waterproofing layer bonded directly to the structure and directly affected by the crack of the structure is protected from being affected by the crack, and There is an effect of eliminating the disadvantages of the urethane waterproofing coating which must be frequently repaired due to cracks and abrasion caused by external impacts except for structural cracks.

This is a non-adhesive waterproof construction in which the first waterproof layer is a non-woven fabric. Since the first waterproof layer is non-adhesive with the structure base surface and includes a pore layer, the crack of the base surface may directly occur due to the urethane waterproof coating. This is to reduce cracks in the coating film.

In addition, the second waterproofing layer including a fiber mesh and a fiberglass mesh layer may be used to prevent cracking, abrasion, or crushing of the urethane waterproofing coating due to external impacts, except for structural cracking, which cannot be solved only by the first waterproofing layer. It has a high tensile strength such as is made in the form of a net is reinforced with a second waterproof layer formed by penetrating the waterproof coating.

Therefore, there is an effect of preventing the phenomenon such as cracks, cracks, rolling of the urethane waterproofing coating film due to cracking or external impact of the structure and increasing the durability to extend the life of the waterproofing layer containing urethane.

In order to obtain the effect of the present invention as described above, first, the non-woven fabric is laid on the base surface so that the urethane waterproofing coating film is not directly bonded to the concrete base surface, and urethane is applied thereon to form a first waterproofing layer.

Since the first waterproof coating of the first waterproof layer is separated from each other by a nonwoven fabric and a void layer formed under the first waterproof coating film without being bonded to existing concrete, even if cracks continue on the base surface of the structure where the waterproof layer is constructed, The cracks in the first waterproofing film are not transmitted or are reduced.

On the other hand, the problem that can be vulnerable to external impact and tension, in addition to the crack of the base of the structure due to the formation of the first waterproof layer can be solved by the installation of the reinforcing fiber mesh layer, which is the second waterproof layer of the present invention.

Glass fiber mesh, fiber-reinforced plastics, etc. of the reinforcing fiber mesh layer may reinforce the weakness of the first waterproofing layer to prevent damage to the first waterproofing layer, and increase the firmness of the waterproofing layer to extend the service life.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: concrete structure 10a: base surface
10b: existing waterproof layer 11: pore layer
12: nonwoven fabric 12 ', 14': laminated paste
13: first waterproof coating 14: reinforcing fiber mesh layer
15: second waterproof coating film 16: third waterproof coating film
17: waterproof silicon 18: stainless steel sheet
A: 1st waterproof layer B: 2nd waterproof layer

Claims (6)

A first waterproofing layer formed on the base surface of the structure; And
It includes a second waterproof layer formed on the first waterproof layer,
The first waterproof layer,
A nonwoven layer formed by installing a nonwoven on a base surface of the structure; And
A first waterproof coating layer formed by applying a first waterproof coating on the nonwoven fabric layer;
The second waterproof layer,
A reinforcing fiber mesh layer formed by installing a reinforcing fiber mesh on the first waterproof coating layer;
A second waterproof coating layer formed by applying a second waterproof coating on the reinforcing fiber mesh layer; And
Urethane coating waterproof structure comprising a third waterproof coating layer formed by applying a third waterproof coating on the second waterproof coating. The method of claim 1,
The nonwoven layer is a non-adhesive on the base surface of the structure, the urethane coating waterproof structure, characterized in that the void layer is formed between the base surface and the nonwoven layer. The method of claim 1,
The reinforcing fiber mesh layer is a urethane coating waterproof structure, characterized in that using a glass fiber mesh or fiber reinforced plastic mesh material. The method according to claim 1 or 3,
The second waterproof coating layer formed by applying a second waterproof coating on the reinforcing fiber mesh layer and the reinforcing fiber mesh layer,
Penetrating a second waterproof coating on top of the reinforcing fiber mesh layer to fill the thickness of the reinforcing fiber mesh layer or less,
Urethane coating waterproof structure characterized in that the urethane coating film of a predetermined thickness was formed by applying a second waterproof coating film on the upper surface of the reinforcing fiber mesh layer. Forming a first waterproofing layer on a base surface of the structure; And
Forming a second waterproof layer on the first waterproof layer,
Forming the first waterproof layer,
Installing a nonwoven layer on the base surface of the structure; And
Applying a first waterproof coating on the nonwoven layer;
Forming the second waterproof layer,
Installing a reinforcing fiber mesh layer on the first waterproof coating layer;
Coating a second waterproof coating on the reinforcing fiber mesh layer; And
Urethane coating waterproof construction method comprising the step of applying a third waterproof coating on the second waterproof coating. 6. The method of claim 5,
Constructing the first waterproof layer and the second waterproof layer so that the bottom surface of the structure is folded at an edge point leading to the side wall and extended to the inner wall;
V-cutting said first waterproofing layer and said second waterproofing layer in the transverse direction at a predetermined height of the side wall;
Bending and inserting a waterproof silicon filling and stainless steel sheet into the v-cut groove; And
Urethane coating waterproof construction method using a fiber-reinforced mesh layer further comprising the step of coating the waterproof silicon to the corner portion is inserted into the stainless steel sheet.

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