KR100742824B1 - Construction method for low and high modulus composite waterproofing with liquid waterproofing and glass fiber spray machine - Google Patents

Abstract

A composite waterproof membrane layer using a spray device of rapid hardening waterproof materials and glass fiber is provided to form a waterproof membrane layer of a composite layer structure having excellent physical properties by spraying rapid hardening waterproof materials and glass fiber selectively or simultaneously. The composite waterproof membrane layer using a spray device of rapid hardening waterproof materials and glass fiber comprises a mixed waterproofing membrane layer formed by spraying a mixed waterproof membrane material of water-soluble hardener and membrane waterproof materials on a base of a structure, a glass fiber layer formed by spraying glass fiber on the mixed waterproof membrane material, and a glass fiber mixed membrane waterproof layer formed by spraying glass fiber and mixed membrane waterproof layers on the glass fiber layer.

Description

TECHNICAL FIELD The composite coating waterproof layer using the fast-drying coating waterproofing material and the glass fiber spraying device and its construction method {Construction Method for Low and High modulus composite waterproofing with Liquid Waterproofing and Glass Fiber Spray Machine}

1 is an exemplary block diagram showing a coating film waterproofing method according to the present invention

Figure 2 is an exemplary view showing the configuration of a spray coating member used in the present invention

Figure 3 is an exemplary view showing a waterproof layer structure constructed in accordance with the present invention

* Brief description of symbols for the main parts of the drawings

(10): concrete base surface (20): mixed coating waterproof layer

(30): glass fiber layer (40): glass fiber mixed coating waterproof layer

50: spray application member 51: spray gun

(52): waterproofing material storage tank (53): compressor

(54): glass fiber ejecting part (55): mixed coating waterproofing material ejecting part

The present invention relates to a composite coating waterproof layer using a quick-drying coating waterproofing material and a glass fiber simultaneous spraying device and a method for constructing the same. The present invention relates to a composite coating waterproofing layer using a fast-drying coating waterproofing material capable of forming a layered coating waterproofing layer and a glass fiber spraying device, and a construction method thereof.

In general, civil structures such as the roof or basement of a building, or tunnels or bridge floors need waterproofing, and synthetic polymer sheets having excellent tensile strength and elongation rate such as EPDM, PVC, EVA, and vulcanized rubber are required for such waterproofing. Asphalt sheet waterproofing materials, or polyurethane, acrylic and asphalt coating waterproofing materials, such as excellent waterproofing material has been developed and used. However, such waterproofing materials, for example, sheet waterproofing materials such as electronics having excellent physical properties such as tensile strength and elongation rate, have seams at overlapping sheets, and these parts are always a problem regardless of the excellent physical properties of the sheet waterproofing materials. There was a problem that a defect such as leakage occurs.

In addition, as a way to improve the problem of the sheet waterproofing material as described above, it was used to replace the coating film waterproofing materials such as urethane, asphalt, etc., which can make a continuous waterproofing layer without overlapping parts such as the latter described above, The thickness of the coating film becomes inhomogeneous according to the unevenness of the base, and in the thin part, the defect of the waterproof layer is broken even if a slight tension or compressive stress is generated due to the gap behavior such as the joint or crack of the structure. There was a problem.

Of course, in order to overcome the above-described problems between the two in order to integrate the waterproof layer, for example, the rubber asphalt coating waterproofing material by laminating a sheet waterproofing material and a coating film waterproofing material, covering only one side with a nonwoven fabric or an asphalt sheet with a woven fabric to integrate it. Even though the waterproof layer has been developed, it takes a lot of time to harden the rubber asphalt coating waterproofing material applied to the lower part, and the workability is poor. However, at the time of walking, when the sheet laying starts, the lower coating film waterproofing material is already hardened, so that the non-woven fabric or the woven fabric is not impregnated, so that the coating film waterproofing material and the sheet waterproofing material fall off at the interface frequently.

On the other hand, in order to vent the vaporization evaporation pressure of the water contained in the waterproofing base or to prevent the stress caused by the behavior of the structural joints from being transferred to the waterproofing layer, the sheet waterproofing material such as a synthetic polymer sheet or a metal plate is first applied. Although a composite waterproof layer for ground insulation is applied to the entire surface of the upper surface with a film waterproofing material, the lower sheet waterproofing material and the film waterproofing material having different materials are adhered with an adhesive or the like. There were various problems such as a problem being pointed out.

The present invention is to solve the above problems, that is, the problems caused by the coating film waterproofing material or sheet waterproofing material alone, or a combination of the coating film waterproofing material and the sheet waterproofing material at the same time, the purpose is to form a continuous coating waterproofing layer without a joint It is equipped with high elongation, high tensile strength and hardness at the same time to cope with structural techniques of various construction structures, and fast rigidity with excellent workability to install front adhesive waterproof layer or insulation waterproof layer according to the purpose of construction structure. It is to provide a composite coating waterproof layer construction method using a coating film waterproofing material and a glass fiber simultaneous spraying device.

Figure 1 is an exemplary block diagram showing a coating film waterproofing method according to the invention, Figure 2 is an exemplary view showing the configuration of the spray coating member used in the present invention, Figure 3 is a waterproof layer structure constructed in accordance with the present invention By way of example, the present invention is to improve the workability by shortening the curing time of the urethane, or asphalt coating waterproofing material that can make a seamless waterproof layer, and to prevent interfacial defects between the waterproof layer and the curing agent to maximize the elongation rate. By maximizing the physical properties such as the tensile strength and hardness of the liquid waterproofing material of the same material as the coating film waterproofing material, by spraying or spraying the glass fiber of uniform size at the same time or selectively, to retain more than the physical properties of the sheet waterproofing material, A mist of glass coating material is wrapped around the glass fiber to form a continuous film waterproofing layer.

That is, the composite coating waterproofing layer of the present invention is a mixed coating waterproofing layer 20 formed by spray spraying coating on the base surface 10 of the structure, and the glass fiber layer 30 formed by spraying spraying on the mixed coating waterproofing layer 20; , Made of a glass fiber mixed coating waterproof layer 40 formed by spraying the glass fiber layer 30,

Such a composite coating waterproofing layer is a mixing step of forming a mixed coating waterproofing material by mixing the water-soluble curing agent and the coating waterproofing material (S100);

Forming a mixed coating waterproof layer by spray-spraying the mixed coating waterproofing material on the entire or the base surface of the concrete structure to form a mixed coating waterproof layer (S200);

Glass fiber layer forming step of forming a glass fiber layer by spraying the glass fiber to the formed mixed coating waterproof layer (S300);

Spraying and coating the glass fiber and the mixed coating waterproofing material on the formed glass fiber layer at the same time can be made through the glass fiber mixed coating waterproofing layer forming step (S400) to form a glass fiber mixed coating waterproofing layer.

In addition, the present invention is to form a waterproof layer further comprising the step of applying a coating material in the case of the exposed waterproof layer to be used for a long time exposed to the outside air. At this time, the top coating material uses a known top coating material.

The mixed coating waterproofing material is to mix the water-soluble curing agent and the coating waterproofing material in a predetermined ratio, and the water-soluble curing agent (NCO content 10 to 30%) immediately before the coating of the coating film waterproofing materials, such as asphalt and urethane, 0.5 to 3 with respect to 100 parts by weight of the coating waterproofing material Add by weight and mix.

The water-soluble curing agent is a modified isocyanate compound for shortening the curing time of the coating film waterproofing material, such as asphalt, urethane, etc., 100 parts by weight of polyfunctional isocyanate,

3 to 30 parts by weight of a polyoxyalkylene ether compound represented by the following [Formula 1] or [Formula 2],

[Formula 1]

[Formula 2]

Wherein R ₂ is a substituted or unsubstituted alkylene group having 1 to 4 carbon atoms, R ₃ is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 10 carbon atoms, and n is 1 To an integer of 10)

On the basis of 100 parts by weight of the polyfunctional isocyanate, it consists of a modified isocyanate compound prepared by polycondensation polymerization of 10 to 60 parts by weight of a polyoxy alkylene alkyl ester represented by the following [Formula 3].

[Formula 3]

Wherein R ₁ represents a substituted or unsubstituted alkyl group having 4 to 40 carbon atoms or an aryl group having 6 to 10 carbon atoms, R ₂ is an alkylene group having 1 to 4 carbon atoms substituted or unsubstituted, and n is 1 To an integer of 10)

The polyfunctional isocyanate compound is preferably substituted or unsubstituted aliphatic diisocyanate having 3 to 30 carbon atoms, substituted or unsubstituted aromatic diisocyanate having 6 to 14 carbon atoms, polyisocyanate or modified polyisocyanate.

The hydraulic curing agent may further include 10 to 200 parts by weight of a viscosity modifier based on 100 parts by weight of the modified isocyanate compound, and further includes 0.0001 to 1.5 parts by weight of an amine catalyst or tin catalyst based on 100 parts by weight of the modified isocyanate compound. It is desirable to. Moreover, it is preferable that NCO content in the hydraulic hardening | curing agent which is the said modified isocyanate compound is 10 to 30%.

The mixed coating waterproofing layer forming step (S200) is to spray-coated the mixed coating waterproofing material by the spray coating member 50, by opening only the mixed coating waterproofing material ejection portion of the spray coating member of the structure to be applied to a thickness of 0.5 ~ 3.0㎜ Spray is applied to the entire area of the base surface or a partial area of the base surface as necessary.

That is, depending on the use of the waterproof layer, for example, when the waterproof surface is a front adhesive waterproof layer is applied to the front surface, if aeration or the like is required, the application according to the intended use can be achieved.

The glass fiber layer forming step (S300) is to spray and apply the glass fiber to the formed mixed coating waterproof layer, to close the mixed coating waterproofing material ejection of the spray coating member 50, to open only the glass fiber ejection part 100g / ㎡ to Spray the glass fiber at 300g / m2.

The glass fiber mixed coating waterproofing layer forming step (S400) is formed by spray-spraying and coating the glass fiber and the mixed coating waterproofing material at the same time, by simultaneously opening the glass fiber ejection and the mixed coating waterproofing material ejection of the spray coating member 50, the glass The fibers and the mixed coating waterproofing material are spray-coated simultaneously at a thickness of 1.5 to 3.0 mm. At this time, the mixed coating waterproofing material spraying portion and the glass fiber ejecting portion is shown in Figure 2, the mixed coating waterproofing material ejecting portion is installed adjacent to the glass fiber ejecting portion, the glass fiber fragments ejected from the glass fiber ejecting portion mixed film The waterproof material is wrapped to form a coating waterproof layer.

That is, the spray coating member 50 of the present invention, as shown in Figure 2, the spray gun 51 for spraying the waterproofing material to eject the glass fiber pieces, and impregnated the glass fiber pieces with the waterproof material;

Is connected to the spray through the mixed film waterproofing material spraying unit and the lake, the waterproof material storage tank 52 for receiving the mixed film waterproofing material, and

And a compressor (53) for pressurizing and sending the mixed coating waterproofing material contained in the waterproofing material storage tank to the mixed coating waterproofing material ejecting portion of the spray gun and simultaneously providing compressed air for ejecting the cut pieces of glass fiber from the spraying gun.

The spray gun 51 is provided with a glass fiber for improving the hardness and waterproofness of the waterproof coating film, the glass fiber spraying unit 54 for cutting and ejecting the provided glass fiber, and the glass fiber spraying unit It is disposed adjacent to, is supplied with a waterproofing material for forming the waterproofing coating film, it is composed of a mixed coating waterproofing material ejecting portion 55 for injecting the waterproofing material so that the glass fiber fragments ejected from the glass fiber ejecting portion is impregnated by the waterproofing material have.

In other words, the spray coating member of the present invention is capable of mechanically forming a seamless coating waterproofing layer, in particular, by maximizing the physical properties such as tensile strength and hardness of the coating waterproofing material, so as to be made even more than the physical properties possessed by the sheet waterproofing material. The uniform size of glass fiber is sprayed at the same time with the coating material such as urethane, asphalt, acrylic, etc. to form a continuous coating waterproof layer by enclosing the glass fiber of the coating film waterproofing material. The parts may be opened at the same time, or the mixed film waterproofing material ejecting part and the glass fiber ejecting part may be separately closed or opened.

Hereinafter, the present invention will be described in detail with reference to experimental examples and examples.

Experimental Example 1

100 parts by weight of polyfunctional isocyanate, 30 parts by weight of polyoxy alkylene alkyl ester represented by the above [Formula 3], 20 parts by weight of the polyoxyalkylene ether compound represented by the above [Formula 1] or [Formula 2] To form a hydraulic curing agent consisting of a polycondensation-modified modified isocyanate compound (NCO content 10 to 30%),

The hydraulic curing agent is added by mixing 2 parts by weight based on 100 parts by weight of the coating material waterproofing material immediately before application of rubber asphalt (Gorco coat of Eastern Forma) coating waterproofing material and urethane coating waterproofing material, to produce a mixed coating waterproofing material, and then spray coating Only the mixed coating waterproofing material ejection part of the member was opened and spray-coated to the entire surface or part of the waterproof base layer with a thickness of 2.5 mm, and the physical properties thereof were measured and compared with the mixing and the non-mixing of the hydraulic curing agent. The results are shown in [Table 1]. Same as

Table 1

As shown in [Table 1], in the case of the coating waterproofing material mixed with the hydraulic curing agent of the present invention, a homogeneous coating waterproofing layer without pinholes exhibiting physical properties of about 1,900% or more of elongation rate was produced within 1 to 2 hours.

Experimental Example 2

As in Experiment 1, a mixed coating waterproofing material (using a rubber asphalt coating waterproofing material) was produced, and this was simultaneously coated on the base surface of the structure with a glass coating fiber with a spray coating member at a thickness of 3 mm. Contrasted with the sheet and waterproofing material. The results are shown in [Table 2].

[Table 2]

As shown in the above [Table 2], by spraying and spraying the general rubber asphalt coating waterproofing material and glass fiber at the same time, it is possible to obtain a superior tensile or tear strength than the general urethane waterproofing material, in particular, in the case of a general coating waterproofing material, Although the tensile and tear strengths are significantly lower than those of synthetic polymer sheet waterproofing or improved asphalt sheet waterproofing, when the mixed coating waterproofing material is applied by the spray coating member as in the present invention, the sheet waterproofing material is superior to various sheet waterproofing materials. Physical properties (tensile strength and tear strength) can be obtained.

Experimental Example 3

A primer (adhesive) was applied to a flat test plate (cement plate) with a V-shaped groove in the center (150 mm) in the longitudinal direction of 300 mm in length, 100 mm in width, and 5 mm in thickness, and then the glass fibers of uniform size thereon. And asphalt coating film waterproofing at the same time and spray-coated with a spray coating member to make five test specimens having a seamless 3mm waterproof layer, and stored (curing) at room temperature (about 25 ℃) for 168 hours, which was KS F The upper and lower ends were fixed to the upper and lower jigs of the tensile tester used to measure the tensile force in 3211 in the longitudinal direction, and the tensile load and the crack width at the moment of breaking the waterproof layer were measured by applying a tensile force at a speed of 500 mm / min. Is shown in [Table 3] below.

Table 3

In the Experimental Example 3, when the tension was applied, a defect (commonly referred to as zero span tension phenomenon) in which the V-shaped grooves which were cut in advance and the upper waterproof layer were simultaneously cut occurred, which resulted in uniform sized glass. In the case of the coating waterproofing material formed by supplying the fiber and the coating waterproofing material, the physical strength such as tensile strength or tearing strength is greatly improved, but the elongation rate is remarkably lowered, that is, a common defect of high modulus materials is exhibited.

Experimental Example 4

100 parts by weight of polyfunctional isocyanate on the test plate as in Experimental Example 3, 30 parts by weight of polyoxy alkylene alkyl ester represented by [Formula 3], polyoxyalkylene represented by [Formula 1] or [Formula 2] Forming a hydraulic curing agent composed of a modified isocyanate compound (NCO content of 10 to 30%) obtained by condensation polymerization of 20 parts by weight of an ether compound,

The hydraulic curing agent was added to 2 parts by weight based on 100 parts by weight of the coating material waterproofing material immediately before coating the rubber asphalt (Gortex coat of Eastern Forma) coating waterproofing material, to make five test bodies coated with a thickness of 3.0mm, Experimental Example 3 Tensile tests were conducted in the same manner as shown in [Table 4].

At this time, 50 parts by weight of the viscosity modifier, 1.0 parts by weight of a curing catalyst (amine or tin) were mixed with the hydraulic curing agent based on 100 parts by weight of the modified isocyanate compound.

Table 4

In Experimental Example 4, the waterproof layer is not immediately cut off after the tensile load is applied. However, as the crack width increases, the cross-sectional decrease of the waterproof layer occurs remarkably, resulting in a partial hole. While physical strength, such as tear strength, is small, elongation is remarkably large, that is, it exhibits a common defect due to the lack of delayed elasticity of low modulus materials.

As in the results of Experimental Example 3 and Experimental Example 4, the mutually opposite physical properties of the material itself are ultimately expected external forces applied to the waterproof layer, for example, steel or PC structures, joints of long span structures, ExP. It can not cope with various behaviors such as deformation (elongation rate) or strength (tensile force) due to wind or temperature changes caused by joints or cracks, and thus there is a problem that the waterproof layer is damaged and leaking defects are generated.

Example 1

A mixed coating waterproofing material was produced as in Experimental Example 4, and the ejection part for supplying the homogeneous glass fibers was closed on the test plate as in Experimental Example 3, and only the ejection part for supplying the coating film waterproofing material was opened to have a thickness of 0.5 mm and 1.0 mm. Spray coating coating layer of 1.5㎜ to cure and cured for about 1 hour to form mixed coating layer, and then spray uniformly glass fiber and electric coating waterproofing material on the same time by spray coating member Spray-reinforced waterproof coating film was made to be 1.5mm, 2.0mm, 2.5mm, cured for about 1 hour to make five laminated composite specimens, and the upper and lower jig of tensile tester used to measure tensile force in KS F 3211. Tensile force and crack width at the moment when the waterproofing layer is broken by applying a tensile force at a rate of 500 mm / min by fixing the upper and lower ends in the longitudinal direction. It was measured. The results are shown in [Table 5].

Comparative Example 1

For comparison, a conventional asphalt mastic having a viscosity of about 40,000 cps (elongation rate of about 1,000%) was applied with a brush 0.5 mm, 1.0 mm and 1.5 mm thick on an electric test plate, and the thickness 1.5 mm, 2.0 mm and 2.5 above. Five test specimens were prepared by attaching the nonwoven fabric-attached side of the asphalt sheet with the nonwoven fabric to one side of ㎜ in contact with the coating waterproof layer, and then subjected to the tensile test in the same manner as in Example 1, and the results are shown in [Table 5] and same.

Table 5

From the above [Table 5], the present invention has very excellent physical properties, that is, high compared with the waterproof layer composed of only the low modulus or the high modulus material, or compared with the waterproof layer laminated with the low modulus coating waterproof material and the high modulus sheet waterproof material. It can be seen that it has a high elongation rate compared to the tensile strength, and these properties have the advantage of increasing the degree of freedom for waterproof design considering the characteristics of the structure with large behavior, and the construction performance due to the shortening of the hardening time and the mechanized construction. Economic improvement effects can also be confirmed.

However, in some specimens, defects such as interfacial drop-off (low modulus coating waterproof material and high modulus coating waterproof material do not break at the same time, and high modulus coating waterproof material maintains a circular shape until breakage of the low modulus coating waterproof material), as in Comparative Examples. In this case, it can be seen that supplementation is necessary.

Example 2

As in Example 1, a mixed coating layer was formed on each test piece, the ejection part for supplying the glass fibers of uniform size of the spray coating member was opened, and the ejection part for supplying the coating film waterproofing material was closed, and the glass was coated on the mixed coating layer. Only 10g / m2, 50g / m2, 100g / m2, 300g / m2 and 600g / m2 of the fiber are sprayed, respectively, and then open both the mixed-film waterproofing material ejection part and the glass fiber ejection part of the spray coating member to reinforce seamless glass fiber. Spray test to be 1.5mm, 2.0mm, 2.5mm thick, and cured for about 1 hour to make three laminated composite specimens, and then placed on upper and lower jig of tensile tester used to measure tensile force in KS F 3211. The upper and lower ends were fixed in the longitudinal direction, and the tensile load and the crack width at the instant of breaking the waterproof layer were measured by applying a tensile force at a rate of 500 mm / min. The results are shown in [Table 6].

Table 6

As shown in [Table 6], in part, the interfacial desorption defects occurring in Example 1 can be greatly reduced, and in particular, the interfacial desorption in test specimens using glass fibers in the range of 100 g / m 2 to 300 g / m 2. Since no defects occurred at all, it can be seen that the load due to the structure behavior generated in the waterproofing base is transferred to the upper high modulus waterproofing layer through the intermediate glass fiber transition layer, and also compared with Example 1. It can also be confirmed that the physical properties are somewhat improved. In particular, in the laminate reinforcement of the low modulus waterproof material and the high modulus waterproof material, as in the present invention, a spray coating member having a spray part for supplying homogeneous glass fibers and a spray part for supplying a coating film waterproofing material is used. The most suitable method is to mix the curing agent that can shorten the curing time of the coating waterproofing material, and the construction and economical improvement effect that the conventional low modulus waterproofing material and the high modulus waterproofing material are not laminated can be obtained. It can be seen that.

As described above, the present invention found the cause of the interface drop between the low modulus coating waterproofing layer and the high modulus waterproofing layer as in Example 1, 2 and Comparative Example 1 from the transfer process of load (force). This is due to the fact that the load (mainly tensile force) caused by the behavior of joints or cracks of the structure is lost in the deformation process of the low modulus waterproof layer at the bottom and is not transmitted to the high modulus waterproof layer at the top. By providing a transition layer that transfers the load between the waterproof layer and the high modulus waterproof layer, the interfacial dropout problem is solved.

As described above, the present invention can be made by using a coating waterproofing material made by incorporating a curing agent effective for shortening curing time and improving elongation rate, and a spray coating member capable of simultaneously spraying glass fiber and coating waterproofing material to create a waterproofing layer that meets various structural design requirements of a structure. have. That is, for example, when the expansion behavior of the joint (ExP.Joint, crack, etc.) according to the wind or temperature change of the steel structure, PC structure, or long span structure is large, the glass fiber injection means is closed, and the coating film waterproofing material injection means Open the bay to make the coating film waterproof layer with a large elongation rate, close the coating film spraying means, open the glass fiber spraying means to spray only the glass fiber, and simultaneously open and close the coating film waterproofing means and the glass fiber spraying means to spray both When the low modulus / high modulus integrated coating waterproof layer can be made, that is, the waterproof layer construction method capable of designing deformation (elongation) or strength (tensile force) that can cope with various behaviors of the structure can be provided.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, the present invention forms a mixed coating waterproofing material by mixing a water-soluble curing agent that can shorten the curing time of coating waterproofing materials, such as asphalt or urethane, to about 1 hour, to form a mixed coating waterproofing material, and spray-coated to cure within 1 hour. To form a low modulus mixed film waterproof layer having a high elongation rate, and then spray-spraying a glass fiber transition layer that mechanically transmits a load (stress) on it, and has a large mechanical property such as tensile strength and tear strength. The glass fiber mixed coating waterproofing layer is laminated spray-sprayed to make a dynamic composite waterproofing layer.

In other words, unlike the conventional method, the present invention uses a method of laminating and compounding a low modulus coating waterproof material and a high modulus coating waterproof material. In particular, the curing time of the low modulus material is extremely shortened to about 1 hour. In addition, by using the spray member coating member, it is possible to make a waterproof layer that can solve the problems of workability and economics at the same time.

Such a composite coating waterproof layer can solve the problems of the conventional seamless coating waterproofing material, or a sheet waterproofing material alone waterproof layer, or a waterproofing layer of the coating waterproofing material and the sheet waterproofing layer laminated composite, in particular, the interface failure defect.

In addition, since it is rapidly cured within 1 hour by a water-soluble curing agent, a low modulus coating waterproof material having a high elongation rate is partially applied to a waterproofing base such as concrete, and then spray-sprayed a glass fiber mixed coating waterproofing layer thereon to form a composite waterproof layer. In this case, it is possible to form a moisture-permeable waterproof insulation layer that can drain, ie, vent, moisture contained in the waterproofing base.

In addition, the present invention can be easily and easily installed by the spray coating member to repair and waterproof the concrete structure, and at the same time by having a solid adhesive and waterproof waterproof, it can be provided with the effect of reducing the management and maintenance costs, It can be installed regardless of restrictive requirements.

In addition, the present invention can be constructed in a fast-rigidity, it is possible to construct a seamless continuous film waterproofing layer that can reduce the workforce work site and minimize the construction period, it is possible to maintain the quality of the excellent waterproofing layer in an economical way, etc. There are many effects.

Claims (8)

A mixed coating waterproof layer formed by spray spray coating on the base surface of the structure, A glass fiber layer formed by spraying the mixed coating waterproof layer; Composite coating waterproof layer using a fast-hard coating film waterproofing material and a glass fiber simultaneous spraying device, characterized in that made of a glass fiber mixed coating waterproofing layer formed by spraying the glass fiber layer. The method of claim 1; The mixed coating waterproof layer is formed by mixing 0.5 to 3 parts by weight of a water-soluble curing agent (NCO content of 10 to 30%), which is a modified isocyanate compound, based on 100 parts by weight of asphalt or urethane coating film waterproofing material. Composite film waterproofing layer using injector. Mixing the water-soluble curing agent and the coating film waterproofing material to form a mixed coating film waterproofing material; Forming a mixed coating waterproof layer by spray-spraying the mixed coating waterproofing material on the entire or the base surface of the concrete structure to form a mixed coating waterproofing layer; A glass fiber layer forming step of forming a glass fiber layer by spraying glass fibers on the formed mixed coating waterproof layer; Using a quick-drying coating waterproofing material and a glass fiber simultaneous spraying device comprising a glass fiber mixed coating waterproofing layer forming step of forming a glass fiber mixed coating waterproofing layer by spraying and spraying the glass fiber and the mixed coating waterproofing material on the formed glass fiber layer at the same time Composite coating waterproof layer construction method. The method of claim 3; The composite coating waterproof layer is a composite coating waterproof layer construction method using a fast-drying coating waterproofing material and a glass fiber simultaneous spraying device characterized in that it has a thickness of 0.5mm to 3.0mm. The method of claim 3 or 4; The mixed coating waterproof layer is formed by mixing 0.5 to 3 parts by weight of a water-soluble curing agent (NCO content of 10 to 30%), which is a modified isocyanate compound, based on 100 parts by weight of asphalt or urethane coating film waterproofing material. Composite coating waterproof layer construction method using a spray device. The method of claim 3; The glass fiber is a composite coating waterproof layer construction method using a fast-drying coating waterproofing material and a glass fiber simultaneous spraying device, characterized in that the injection in 100g / ㎡ to 300g / ㎡. The method of claim 3; The glass fiber mixed coating waterproof layer is a composite coating waterproof layer construction method using a fast-drying coating waterproof material and a glass fiber simultaneous spraying device characterized in that it has a thickness of 1.5mm to 3.0mm. The method of any one of claims 3, 4, 6 and 7; The composite coating waterproof layer is a composite coating waterproof layer construction method using a fast-coat coating waterproof material and a glass fiber simultaneous spraying device characterized in that it further comprises a top coating material coating step of applying a top coating material.

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