KR102109184B1 - Compsite Waterproofing Structure using Polyurea and Polypropylene panel and its Construtruction Method - Google Patents

Abstract

The present invention relates to a composite waterproofing structure using polyurea and polypropylene panels, in which a fiber reinforcing material such as non-woven fabric, a polyproplynene panel and a polyurea waterproofing layer are stacked. The composite waterproofing structure, in which a lower non-woven sheet layer, the polypropylene (PP) panel, and an upper non-woven sheet layer are stacked in order, includes: a polyurea waterproofing layer formed such that the polyurea is applied to an upper portion of the upper non-woven sheet layer; and a top coating layer formed on an upper portion of the polyurea layer. The present invention also relates to a construction method thereof.

Description

Composite waterproofing structure using polyurea and polypropylene panel and its construtruction method

The present invention relates to a composite waterproof structure and a construction method of constructing a waterproof layer on the bottom surface of a structure such as a rooftop, and more specifically, by consolidating the bottom surface of the rooftop and polyurea to prevent the polyurea from falling off the rooftop surface. The invention relates to a composite waterproof structure using polyurea and polypropylene panels and a construction method therefor.

Water-proof and moisture-proof materials are used in building structures to provide water proofing and damp proofing to prevent water from penetrating through the interior and exterior.

In general, there are various waterproofing methods using asphalt waterproofing, sheet waterproofing, coating waterproofing, and cement waterproofing in materials and methods used for waterproofing, but when waterproofing on the roof, most single waterproofing fails to secure the breathability of the concrete surface. Therefore, there is a problem that water leakage occurs due to curing and deterioration, peeling, or adhesive bursting of the waterproofing material.

In addition, in the case of the conventional roof waterproofing method of constructing a waterproof sheet or the like to maximize waterproof performance, if the floor surface of the roof surface is not smooth, the floor surface and the waterproof layer are likely to be free, and highly skilled work is required. In the case of summer when the humidity is high, there is a problem in that the urethane is liberated because it does not remove enough moisture when the urethane is applied.

Patent Publication No. 10-1997-0043656 Registered Patent No. 10-1286931

Invented to solve the above-described problems of the present invention, it is intended to improve durability by preventing the components combined with the roof surface from being dropped from the roof surface for waterproofing.

In addition, even when the humidity of the roof surface is increased, it is possible to maintain the low-humidity state by inducing moisture through a ventilation path.

In addition, by absorbing and dispersing bubbles such as water vapor generated from irregularities, grooves, cracks, etc. on the bottom surface into the lower nonwoven sheet layer, the floating phenomenon is prevented and the quality of the upper waterproofing construction layer can be improved.

The present invention has the following problem solving means as a means for solving the above problems.

The present invention relates to a composite waterproof structure using polyurea and polypropylene panels, a urethane adhesive layer (110) for fixing a lower nonwoven sheet layer on a floor (C) where foreign matter is arranged; A lower nonwoven sheet layer 120 adhered and applied to the bottom surface C on which the foreign matter is arranged by a urethane adhesive layer; A polypropylene (PP) panel 130 formed on the lower nonwoven sheet layer; An upper nonwoven sheet layer 140 coated on the polypropylene (PP) panel; A polyurea waterproof layer 150 formed by coating polyurea on the upper nonwoven sheet layer; In the composite waterproof structure using a polyurea and polypropylene panel comprising; a top coating layer 160 that blocks ultraviolet rays from the upper portion of the polyurea layer to prevent aging and discoloration of the polyurea waterproof layer, the lower nonwoven fabric sheet layer ( It characterized in that the thickness of 120) is formed thicker than the thickness of the upper nonwoven sheet layer 140.

The urethane adhesive layer 110 of the present invention is characterized in that to form a ventilation path between the bottom surface (C) and the lower non-woven sheet layer 120, the ventilation path is formed in a continuous or lattice-like direction in one direction do.

The lower nonwoven sheet layer 120 and the upper nonwoven sheet layer 140 of the present invention are characterized by being adhered to the polypropylene panel 130 with a urethane primer.

The lower nonwoven fabric sheet layer 120 of the present invention has a waterproof layer and a lower waterproof layer 121 having an adhesive function; further provided, and the upper nonwoven fabric sheet layer 140 is impregnated by applying a high-viscosity urethane to impregnate the urethane waterproof layer ( 141); is characterized in that it is further formed.

The lower non-woven fabric sheet layer 120 of the present invention prevents the upper waterproof layer from being lifted up due to irregularities and grooves on the waterproof bottom surface, and allows long-fiber non-woven fabric having a thickness of 2-3 mm to absorb and disperse bubbles generated from the bottom surface. It is characterized by consisting of.

The upper nonwoven sheet layer 140 of the present invention is made of a needle punch nonwoven fabric having excellent durability and chemical resistance, and one side is formed to have the same length as the lower polypropylene panel 130, and the other side is polypropylene panel 130 It is characterized in that it further comprises an extension 145 that extends beyond the length of).

The extension portion 145 extending beyond the length of the polypropylene panel 130 of the present invention is characterized in that it is formed to overlap the upper portion of the adjacent non-woven fabric sheet layer 140 of the composite waterproof structure to be superimposed.

In another embodiment of the present invention, in the construction method of the composite waterproof structure using polyurea and polypropylene panels for waterproofing the bottom surface of concrete, cleaning the bottom surface (C) of concrete to remove foreign substances (S1) ; Applying a urethane adhesive to the surface of the concrete (S2); A step of spreading and spreading the lower nonwoven sheet layer on top of the urethane adhesive (S3); Laminating a polypropylene (PP) panel on top of the lower nonwoven sheet layer (S4); Step of spreading the upper non-woven sheet layer on the top of the polypropylene (PP) panel to be in close contact (S5); Forming a polyurea waterproof layer by applying polyurea on the upper portion of the upper nonwoven sheet layer (S6); Including the step (S7) of forming a top coating layer to prevent aging and discoloration of the polyurea waterproof layer by blocking ultraviolet rays on the upper portion of the polyurea waterproof layer (S7); the lower nonwoven sheet layer 120 is a function of ventilation and buffer sheet In order to do, it is made of a long fiber non-woven fabric, the upper non-woven sheet layer is made of a needle punch non-woven fabric excellent in durability and chemical resistance, characterized in that the thickness of the lower non-woven sheet layer is formed thicker than the thickness of the upper non-woven sheet layer do.

The step of applying the urethane adhesive of the present invention (S2); the urethane adhesive of the step is to form a vent that discharges bubbles generated from the bottom surface, characterized in that the vent is formed to be continuous in one direction or formed in a lattice shape.

The present invention spreads the upper nonwoven sheet layer on the upper part of the polypropylene (PP) panel and is constructed to be in close contact (S5); the upper nonwoven sheet layer of one side is formed to have the same length as the lower polypropylene panel, and the other After the elongated portion extending from the length of the polypropylene panel is formed, the elongated portion is formed to overlap and superimpose the upper portion of the adjacent nonwoven fabric sheet layer of a composite waterproof structure, and then, after bonding and bonding, polyurea is applied to the upper portion of the upper nonwoven fabric sheet layer. It characterized in that the step of forming a polyurea waterproof layer by applying (S6) and forming a top coating layer on top of the polyurea waterproof layer (S7);

The present invention forms a ventilation path without completely attaching the lower nonwoven sheet layer to the floor of the roof of the building, and the lower nonwoven sheet layer having a high porosity inside sufficiently absorbs bubbles such as water vapor generated from the bottom surface to prevent condensation, , It has the effect of preventing the corrosion of concrete.

It also improves durability so that the waterproof constructions that are combined with the roof top surface do not fall off.

In addition, it is possible to obtain an effect of improving the construction quality of the upper waterproofing layer by effectively preventing bubbles, such as water vapor generated from irregularities, grooves, cracks, etc. on the bottom surface and preventing floating.

1 is a vertical cross-sectional view of a composite waterproof structure using polyurea and polypropylene panels according to an embodiment of the present invention
2 is a vertical cross-sectional view of a composite waterproof structure using polyurea and polypropylene panels according to another embodiment of the present invention
3 is a vertical cross-sectional view of a seam portion of a composite waterproof structure using polyurea and polypropylene panels according to an embodiment of the present invention
4 is a flow chart showing the steps of the construction method of a composite waterproof structure using polyurea and polypropylene panels according to an embodiment of the present invention.

For waterproofing a composite waterproof structure concrete surface using polyurea and polypropylene panels according to the present invention, it has a urethane adhesive layer 110 that fixes the lower nonwoven fabric to the floor where the foreign matter is arranged.

The urethane adhesive layer 110 is formed between the bottom surface (C) and the lower non-woven fabric sheet layer 120 to form a vent that can release bubbles, such as water vapor generated from the bottom surface (C), the vent is in one direction It is sufficient to be continuous or to be formed in a lattice shape, and the lower nonwoven sheet layer 120 is formed to be sufficiently seated on the bottom surface C.

Since the lower nonwoven sheet layer 120 is seated on the roof top of the building without being completely attached, the lower nonwoven sheet layer 120 serves as a vent for absorbing bubbles, such as water vapor generated from the bottom surface, by the air gap.

A lower nonwoven sheet layer 120 that is adhered and applied by the urethane adhesive layer 110 is formed on the bottom surface on which the foreign matter is arranged.

The concave-convex surface of the concrete surface may still be located on the bottom surface (C) where the foreign matter is arranged, and it is sufficiently in close contact with the concave-convex surface and increases the adhesion effect with the concave-convex surface of the concavo-convex portion located on the urethane adhesive layer 110 The lower nonwoven sheet layer 120 is formed to a sufficient thickness so as to prevent peeling from the adhesive layer and sufficiently absorb air bubbles such as water vapor generated from the concrete floor surface C to form a ventilation path therein. It should be formed thicker than the thickness of the upper nonwoven sheet layer 140 to be formed on the top.

As a result, the lower nonwoven sheet layer 120 is prevented from being bent by the uneven portion of the concrete floor surface, thereby significantly reducing the peeling phenomenon of the waterproof layers formed on the upper portion.

In addition, since sufficient voids can be secured inside, air bubbles, pinholes, and air bubbles are suppressed by smoothly dispersing air bubbles by evaporation of water, thereby sufficiently dispersing and venting air bubbles such as water vapor generated from the bottom surface. This prevents condensation from forming and prevents concrete from corroding.

In order to sufficiently exert such effects, the lower nonwoven sheet layer 120 is preferably made of a non-woven fabric having a high water content, and it is preferable that the initial thickness is formed to a thickness of 2 to 3 mm in consideration of the strength and durability of the waterproof layer.

In order to sufficiently exhibit the above-described effect, as a preferred embodiment of the nonwoven fabric constituting the lower nonwoven sheet layer 120, a long fiber nonwoven fabric having high moisture content or needle punching may be necessary to form a sufficient amount of voids inside the needle punching. It is preferably a nonwoven sheet that has been subjected to a process.

At this time, it is preferable that the long fiber nonwoven fabric satisfies a tensile strength of 40 kgf / 5 cm or more (KS K 0520 measurement standard), an elongation rate of 30% or more (KS K 0520 measurement standard), and a dimensional change rate of ± 1.0% or less (KS F4917 measurement standard). Do.

The lower nonwoven sheet layer 120 and the upper nonwoven sheet layer 130 may be adhered to the polypropylene panel 130 with a urethane primer.

The polypropylene (PP) panel 130 is formed by bonding to the upper portion of the lower nonwoven sheet layer 120.

Although the lower nonwoven sheet layer 120 secures flatness with a sufficient thickness, the polypropylene (PP) panel 140 is resistant to bending or folding compared to the lower nonwoven sheet layer 120, so that the lower nonwoven sheet layer ( 120) prevents the bending, and increases the flatness of the upper and lower nonwoven sheet layers, thereby preventing cracks and leaks in the waterproof layer and alleviating physical impact from the outside.

The polypropylene (PP) panel 130 is 1 mm or less and is preferably formed to be about 0,4 mm, so that the strength is excellent, thereby maximizing the waterproof performance of the waterproof layer. If it is too thin, the waterproof performance of the waterproof layer cannot be sufficiently exhibited, and if it is too thick, it is disadvantageous in construction.

An upper nonwoven sheet layer 140 is formed on the polypropylene (PP) panel 130.

The upper nonwoven sheet layer 140 is preferably a needle punched nonwoven fabric having excellent strength and durability, chemical resistance, or an embossed nonwoven fabric having excellent durability and weatherability, processability, etc., and since voids are formed inside, an effect of preventing condensation inside the waterproof layer Can get

The upper nonwoven sheet layer 140 is made of a needle punched nonwoven fabric having excellent durability and chemical resistance, and one side is formed to have the same length as the lower polypropylene panel 130, and the other side has a length of the polypropylene panel 130. The extended portion 145 is further provided, and the extended portion 145 extended than the length of the polypropylene panel 130 covers the upper portion of the upper nonwoven sheet layer 140 of the adjacent composite waterproof structure so as to overlap. Formed and joined.

At this time, the space portion between the extended portion 145 shown in FIG. 3 and the upper nonwoven fabric sheet layer 140 of the adjacent composite waterproof structure is not actually an empty space, and when the nonwoven fabric sheet layer is overlapped and compressed, the It is filled by deformation.

The polypropylene panel 130 and the upper nonwoven sheet layer 140 may be adhered with a urethane primer, but a lower waterproof layer 121 having a waterproof function and an adhesive function is further provided on the lower nonwoven sheet layer 120. The non-woven sheet layer 140 is further formed of a urethane waterproof layer 141 formed by impregnation by applying a high-viscosity urethane, so that a polyurea waterproof layer 150 is further formed on the upper non-woven sheet layer 140 to form a waterproof layer. It may be configured to improve the internal strength of, to prevent swelling and lifting phenomenon, and to improve the durability.

At this time, the lower waterproof layer is preferably impregnated with the lower non-woven fabric sheet layer, so that the inorganic coating waterproof agent is applied to perform both waterproof and adhesive functions.

Polyurea is coated on the upper portion of the upper nonwoven sheet layer 140 to be integrally combined to form a polyurea waterproof layer 150.

Since the polyurea waterproof layer 150 is constructed by spraying directly onto the upper nonwoven sheet layer 140 to form a coating film, air can be significantly shortened and a predetermined coating film thickness can be secured continuously during construction.

The polyurea waterproof layer 150 may be embossed to prevent slipping or the like.

A top coating layer 160 that blocks ultraviolet rays to prevent aging and discoloration of the polyurea waterproof layer 150 is installed on the polyurea waterproof layer 150.

The top coating layer 160 forms a film on the polyurea waterproof layer 150 to reflect ultraviolet rays and the like, thereby minimizing the transmission of solar radiant heat to the interior of the building, and at the same time, it can exhibit the effect of improving the durability of the polyurea waterproof layer 150. have.

Hereinafter, a construction method of a composite waterproof structure using polyurea and polypropylene panels according to the present invention will be described in more detail.

First, a step (S1) of removing contaminants by grinding or cleaning the irregularities on the surface of the concrete floor is performed.

Then, a step (S2) of forming a urethane adhesive layer 110 by applying a urethane adhesive to the concrete floor surface is performed.

The urethane adhesive layer 110 forms a ventilation path that can apply and cure urethane resin on the concrete floor surface (C) and release bubbles such as water vapor generated from the foundation of the waterproof surface, but the ventilation path is continuous in one direction or It is sufficient that it is formed in a lattice shape and is formed to such an extent that the upper and lower nonwoven sheet layers are sufficiently seated.

Next, a step (S3) of unfolding the lower nonwoven sheet layer on the upper portion of the urethane adhesive layer and constructing it to be in close contact is made.

Laminating a polypropylene (PP) panel on top of the lower nonwoven sheet layer (S4); The step (S5) of sequentially spreading and spreading the upper nonwoven sheet layer on the top of the polypropylene (PP) panel is sequentially performed.

In the step (S5) of spreading and spreading the upper nonwoven sheet layer, one side of the upper nonwoven sheet layer is formed to have the same length as the polypropylene panel, and the other side is further provided with an extension extending than the length of the polypropylene panel. , It is formed so as to overlap the upper portion of the upper layer of the nonwoven fabric layer of the adjacent composite waterproof structure to be laminated.

As a result, regions where adjacent nonwoven sheet layers overlap are formed to be firmly fixed.

Forming a polyurea waterproofing layer by coating polyurea on the upper portion of the upper nonwoven fabric sheet layer (S6); Step (S7) of forming a top coating layer to prevent aging and discoloration of the polyurea waterproof layer by blocking ultraviolet rays on top of the polyurea waterproof layer is sequentially performed.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to what is illustrated.

Throughout the specification, when a part “includes” a certain component, this means that other components may be further included rather than excluding other components, unless specifically stated otherwise.

As described above, although the present invention has been described by a limited embodiment, the present invention is not limited to this, and the technical idea of the present invention and patents to be described below by those skilled in the art to which the present invention pertains Various modifications and variations will be possible within the scope of the claims.

C Floor 110 Urethane adhesive layer
120 Lower nonwoven fabric sheet layer 121 Lower waterproof layer
130 Polypropylene (PP) panel 140 Upper non-woven sheet layer
141 Urethane waterproof layer 145 Extension
150 Polyurea waterproof layer 160 Top coating layer

Claims (10)

A urethane adhesive layer 110 fixing the lower nonwoven sheet layer to the bottom surface C on which foreign matters are arranged;
A lower nonwoven sheet layer 120 adhered and applied to the bottom surface C on which the foreign matter is arranged by a urethane adhesive layer;
A polypropylene (PP) panel 130 formed on the lower nonwoven sheet layer;
An upper nonwoven sheet layer 140 coated on the polypropylene (PP) panel;
A polyurea waterproof layer 150 formed by coating polyurea on the upper nonwoven sheet layer;
In the composite waterproof structure using a polyurea and polypropylene panel comprising; a top coating layer 160 to prevent aging and discoloration of the polyurea waterproof layer by blocking ultraviolet rays from the top of the polyurea waterproof layer 150,
The thickness of the lower nonwoven sheet layer 120 is formed thicker than the thickness of the upper nonwoven sheet layer 140,
The urethane adhesive layer 110 forms a ventilation path between the bottom surface C and the lower nonwoven sheet layer 120, wherein the ventilation paths are continuous in one direction or formed in a lattice shape,
The lower nonwoven sheet layer 120 and the upper nonwoven sheet layer 140 are adhered to a polypropylene panel 130 having a thickness of 1 mm or less with a urethane primer,
A lower waterproof layer 121 having a waterproof and adhesive function is further provided on the lower nonwoven sheet layer 120, and an upper portion of the upper nonwoven sheet layer 140 is impregnated by applying high viscosity urethane to impregnate the urethane waterproof layer 141; Composite waterproof structure using polyurea and polypropylene panels characterized in that it is further formed. delete delete delete The method according to claim 1,
The lower nonwoven sheet layer 120 is made of a long fiber nonwoven fabric having a thickness of 2 to 3 mm so as to prevent the upper waterproof layer from being lifted up due to irregularities and grooves on the waterproof floor, and to absorb and disperse bubbles generated from the bottom surface. Composite waterproof structure using polyurea and polypropylene panels. The method according to claim 1,
The upper nonwoven sheet layer 140 is made of a needle punched nonwoven fabric having excellent durability and chemical resistance, and one side is formed to have the same length as the lower polypropylene panel 130, and the other side has a length of the polypropylene panel 130. A composite waterproof structure using polyurea and polypropylene panels, further comprising an extended portion 145 that extends further. The method according to claim 6,
Polyurea and polypropylene characterized in that the extension portion 145 extending from the length of the polypropylene panel 130 is formed to overlap the upper portion of the adjacent non-woven fabric sheet layer 140 of the composite waterproof structure to be superimposed. Composite waterproof structure using panels. In the waterproof layer construction method for waterproofing the bottom surface of the concrete,
Cleaning the bottom surface (C) of the concrete to remove foreign substances (S1);
Applying a urethane adhesive to the surface of the concrete (S2);
A step of spreading and spreading the lower nonwoven sheet layer on top of the urethane adhesive (S3);
Laminating a polypropylene (PP) panel having a thickness of 1 mm or less on an upper portion of the lower nonwoven sheet layer (S4);
Spreading the upper nonwoven sheet layer on top of the polypropylene (PP) panel and constructing it to be in close contact (S5);
Forming a polyurea waterproof layer by applying polyurea on the upper portion of the upper nonwoven sheet layer (S6);
Including the step (S7) of forming a top coating layer to prevent aging and discoloration of the polyurea waterproof layer by blocking ultraviolet rays on top of the polyurea waterproof layer;
The lower nonwoven sheet layer 120 is made of a long-fiber nonwoven fabric to function as a ventilation and cushioning sheet, and the upper nonwoven sheet layer is made of a needle punched nonwoven fabric having excellent durability and chemical resistance, and the lower nonwoven fabric sheet layer The thickness is formed thicker than the thickness of the upper nonwoven sheet layer,
The step of applying the urethane adhesive (S2); the urethane adhesive of the polyurea and poly, characterized in that to form a vent that discharges the air bubbles generated from the bottom surface, the vent passage is formed so as to be continuous or lattice-shaped in one direction. Construction method of composite waterproof structure using propylene panel. delete The method according to claim 8,
The upper nonwoven fabric sheet layer is spread on the upper portion of the polypropylene (PP) panel and constructed to be in close contact (S5); one side of the upper nonwoven fabric sheet layer has the same length as the lower polypropylene panel, and the other side is polypropylene An extended portion extending beyond the length of the panel is formed, and the extended portion is formed to cover and superimpose an upper portion of the adjacent non-woven fabric sheet layer of a composite waterproof structure, and then bonded and constructed, and then coated with polyurea on the upper portion of the upper nonwoven fabric sheet layer to form poly Forming a urea waterproof layer (S6) and
Forming a top coating layer on top of the polyurea waterproof layer (S7); Construction method of a composite waterproof structure using polyurea and polypropylene panels, characterized in that sequentially.

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