KR20000072869A - Two-Package Type Inorganic Membranous Waterproof Stuff Having Excellent Elasticity, Hybrid Membranous Waterproof Sheet and Construction Method therefor - Google Patents

Abstract

PURPOSE: A two-component inorganic elastic film waterproof agent containing an inorganic filler and a binding agent and capable of forming a waterproof layer having excellent durability, a composite film waterproof sheet hardly influenced by cracking of concrete and waterproof construction method employing the same are provided which are easy to use, reduce labor cost and are harmless and nontoxic. CONSTITUTION: The inorganic film waterproof agent comprises an emulsion type binding agent and a powdery filler, wherein the binding agent comprises 35 to 65% by weight of an acrylic acid ester emulsion, 1.7 to 3.5% by weight of water and 0.01 to 0.5% by weight of a deforming agent, the inorganic filler comprises 20 to 40% by weight of silica, 8 to 16% by weight of functional cement, 1.5 to 4% by weight of clay and 0.5 to 1.0% by weight of other additives. The waterproof construction method comprises the steps of executing slope work to enable water to flow easily on the bottom surface of concrete(20), partially adhering the each lower surface of a plurality of waterproof sheets(21) deposited unwoven fabrics(21a) on each surface to the bottom surface and at the same time, adhering the surroundings of the sheet to that of another sheet in piles with a specified width; forming an adhesion layer(22) by coating an inorganic elastic film waterproof agent primer on the upper surface of the waterproof sheet; forming a waterproof film(23)(24) by coating the inorganic elastic film waterproof agent to upper surface of the adhesive layer at least one time and forming a protective film by coating a film protecting agent on the upper surface of the waterproof film.

Description

Two-Package Type Inorganic Membranous Waterproof Stuff Having Excellent Elasticity, Hybrid Membranous Waterproof Sheet and Construction Method therefor}

The present invention relates to a two-part inorganic type elastic coating waterproofing agent which contains an inorganic filler in a binder and has high tensile strength, imparts elasticity, breathability, and moisture permeability to form a waterproof layer having excellent durability.

In addition, the present invention can improve the durability, weather resistance, workability (simpleness) of the coating work by having a breathable and moisture-permeable by coating the inorganic elastic composite coating film using the waterproofing agent on the base sheet, the mother (base) It is related to the composite coating waterproof sheet and the waterproof construction method using the same, which is not affected by the waterproof layer due to the crack of the mother because the construction is made by a partial adhesive on.

In general, leaks and condensation due to cracks occur on the base of inorganic materials such as concrete or mortar forming a building, and this problem plays a role in facilitating aging of the building by weakening the durability of the building. Therefore, in order to eliminate the causes of such defects, the exterior waterproofing of the roof / outer wall of a building uses a sheet waterproofing method using a waterproof sheet or a film waterproofing method using a waterproofing material.

Looking at the advantages and disadvantages of the conventional waterproof method as follows.

First, the synthetic polymer sheet waterproof method has the advantage of easy construction because it uses a synthetic polymer sheet, but is easy to be damaged because of the thin, there is also a problem of watertightness. In addition, in the case of using this method, there is a problem in that a sheet for civil engineering is used in combination and the protective layer must be ensured.

In addition, since the improved asphalt sheet waterproofing method attaches the improved asphalt sheet to the torch burner, watertightness can be secured by some training, and thus it is applied for underground waterproofing. However, the construction method has a problem that requires maintenance, such as certification of the contractor through training.

In addition, as the sheet waterproofing material, a sheet of polyethylene, soft polyvinyl chloride, ethylene vinyl acetate copolymer, synthetic rubber, or the like may be used, but overall, the sheet waterproofing material has very low adhesion to concrete. There is a problem such that defects easily occur at the sheet joints, which impairs the waterproof function.

As one of the waterproofing of the coating, asphalt waterproofing method (heating method) is a joint, but if 3-4 sheets of roofing are overlapped with each other, there is less risk of permeability and the thickness is less likely to damage the waterproof layer. However, this method has a problem of high temperature molten asphalt when it is installed on a high wall surface, and since water is easily generated during hardening of molten asphalt, there is a problem that the reliability of waterproof cannot be expected and there are not many skilled workers. .

The liquid waterproofing method has the advantage of being able to use on the basis of the movement because of the low number of processes, the construction is simple, the thickness of the waterproof layer is constant, and the elongation and crack resistance is possible. However, this method requires a lot of leaks at the joints and ends, hard to find the cause of the leaks, is insulated from the spheres, swells and breaks well, is not breathable, and requires a degassing device. There is a problem that occurs.

In addition, the urethane waterproofing method has good elasticity and can withstand the background crack of less than 1mm, is a commonly used coating waterproofing method excellent in adhesion to the base surface. However, this method has a problem in that when the moisture of the base is more than 8%, defects may occur when bonding, swelling occurs, the curing time is long, and the flowability of the vertical portion is large.

In other coating film waterproofing methods, reactive curable resins such as epoxy resins, unsaturated polyester resins, and vinyl ester resins can be used as coating materials.

However, the conventional waterproofing material or waterproofing method for the purpose of waterproofing the floor, inner / outer wall, and ceiling of a concrete structure may not sufficiently satisfy the performance required for the coating in some cases.

In addition, the film made of epoxy resin material can be integrated with concrete or asphalt. However, this epoxy resin film alone is insufficient in the elongation characteristics of the material against cracks generated in the structure. There is a fear that it cannot be exercised.

Therefore, the case of using an epoxy resin or urethane resin material which gives the material its elongation characteristics can be considered. However, a coating made of such a material generally has a problem of high mechanical strength but poor durability. Moreover, the urethane waterproofing has a problem in that the adhesion is not good when the moisture of the base is more than 8%, swelling phenomenon and the curing time is long.

On the other hand, Korean Patent Publication No. 97-20222 proposes a method of forming a composite film. In this method, a film (A) made of polyurea resin is formed by a spray method, and a film (B) is formed by applying a primer made of urethane resin on the film (A), and then epoxy on the film (B). Resin is applied to form a coating (C), and at least one selected from cement mortar, cement concrete and paving asphalt is poured on the coating (C) to form a layer (D).

When the structure of the published patent is represented in the drawings, it is represented as shown in FIG. 1. As shown in FIG. 1, a waterproof structure composed of conventional composite coatings is classified into three types, and three waterproof layers A-C and one pressing layer D are formed on the surface of the structure E in a completely close contact manner.

However, the above process method is formed by directly adhering the composite film (AD) to the surface of the concrete molded product, which is the structure (E), so that when the crack occurs in the mother (E), the composite film waterproof layer is also affected by leakage and condensation. This occurs, which weakens the durability of the building has a problem of promoting the aging of the building.

Furthermore, the above waterproof layers have a problem of bulge of the waterproof layer due to the water vapor due to lack of breathability and moisture permeability, and the dry state of the ground, the smoothness of the surface, the strength of the surface, the shape of the edge portion and the clean state of the ground. As a result, the adhesion of the coating film is greatly affected.

Since the construction method is basically made by wet construction, construction work according to wet construction is cumbersome and inconvenient, and a large construction cost is spent, as well as a prolonged working time, which shortens the construction period.

Accordingly, the present invention has been made in view of the problems of the prior art, the purpose of which is to coat the inorganic elastic composite coating film on the base sheet to have breathability and moisture permeability to improve the durability, weather resistance, workability (simpleness) of the coating work It is possible to improve, and because the construction is made by a partial adhesive to the base (lower) to provide a composite coating waterproof sheet and a composite coating waterproofing method using the same, which is not affected by the waterproof layer due to the crack of the mother.

Another object of the present invention is to contain the inorganic filler in the binder to be used to form the coating film of the composite coating waterproof sheet described above, the tensile strength is high, the two-component inorganic to form a waterproof layer having excellent durability by providing elasticity, breathability and moisture permeability An elastic coating film waterproofing agent is provided.

1 is a cross-sectional view showing a conventional rooftop waterproof construction method,

2 is a cross-sectional view showing a composite coating waterproof structure constructed in accordance with the composite coating waterproofing method of the first embodiment of the present invention;

3 is an enlarged view of part X of FIG. 2;

4 is a plan view showing the arrangement of the base sheet;

5 is a cross-sectional view taken along the line VV of FIG. 4;

6 is a cross-sectional view showing a sealing bonding method between the waterproof sheet;

7 is an enlarged view of FIG. 2;

8 is a cross-sectional view showing a composite coating waterproof structure constructed according to the composite coating waterproofing method of the second embodiment of the present invention.

* Explanation of Signs of Major Parts of Drawings *

20; Concrete slabs 21; Waterproof sheet

21a; Nonwoven fabric 21b; nail

22; Adhesive layer 23; 1st waterproofing membrane

24; Second waterproofing film 25; Shield

31; Adhesive 33; Morgan

35; Hair root

In order to achieve the above object, the composite coating film waterproofing method of the present invention is to perform a water refining process to achieve a smooth drainage of the concrete base surface, a plurality of non-woven fabric attached polyethylene sheet on the base surface Partially bonding each as a substrate, sealingly bonding the peripheral portions with a predetermined width overlapping the peripheral portions of the other sheets, and forming an adhesive layer by applying an inorganic elastic coating waterproofing primer to the upper surface of the polyethylene sheet; Forming a plurality of waterproof films by applying a plurality of inorganic elastic coating waterproofing agents to the upper surface of the adhesive layer, and forming a protective film by applying a coating protective agent to the upper surface of the waterproofing film.

In this case, in addition to heat-sealing the nonwoven fabric to the polyethylene (PE) -based hard (soft) sheet as described above, a sheet such as iron plate, wood, acrylic, asphalt, roofing, etc. may be used as necessary. The nonwoven fabric described above is used to improve the adhesion with the coating waterproofing agent applied on the upper portion of the substrate.

Meanwhile, the inorganic elastic coating waterproofing agent used to form the waterproofing film is largely composed of two components into an emulsion-type binder and a powder-type inorganic filler, and the binder is a moisture-permeable acrylic ester emulsion or an acrylic acid-styrene copolymer emulsion 35-65. Weight%, water 1.7-3.5% by weight and defoaming agent 0.01-0.5% by weight, the inorganic filler is 20-40% by weight of silica sand, 8-16% by weight of functional cement, 1.5-4% by weight of clay, other additives 0.5- It consists of 1.0 weight%.

As the organic polymer resin used as the main component of the binder, acrylic ester-based emulsions are used for elastic mortar, and have excellent water resistance, alkali resistance, and weather resistance, and have excellent compatibility with cement while forming a soft coating film. In addition, the acrylic acid-styrene copolymer emulsion has a disadvantage in that the double bond portion of the styrene is discolored by ultraviolet rays when exposed to external light, so it is suitable to be used for waterproofing the basement layer not exposed to strong external light.

It is preferable that the acrylic ester emulsion has a particle diameter of 0.3-30 µm in the acrylic ester resin, and when 0.3 µm or less, breathability is not expected due to air permeability, and when 30 µm or more, the ventilation performance is improved, but Elongation and waterproofing performance are lowered.

Inorganic elastic coating waterproofing agent of the present invention should be used as a binder of the coating agent to the acrylic ester emulsion having a breathable function in order to impart breathability and waterproofness when mixing the functional emulsion and the inorganic filler. Therefore, the acrylic ester emulsion uses 35-65% by weight of the entire waterproofing agent, when less than 35% by weight it is difficult to give the elasticity effect of the waterproofing coating, the weight of the aggregate occupies a relatively large weight and the durability of the coating film If it is insufficient, in the case of 65% by weight or more, it is difficult to obtain a breathable and durable waterproof coating due to the denseness of the waterproof coating.

In addition, the water contained in the binder uses 1.7 to 3.5% by weight to improve the paintability, and facilitates the mixing action of the emulsion and powder, and does not add a separate dilution water to facilitate the operation.

Antifoaming agent suppresses bubble generation by mixing powder during emulsion and powder mixing, and adds trace amount in 0.01-0.5% by weight because it is added to give defoaming effect of bubbles generated by roller work during on-site mixing. It also lowers the water resistance of the waterproof coating when applied over 0.5% by weight. The antifoaming agent prevents coating bonds due to bubbles, ie, lifting and swelling, and removes the internal and external bubbles of the formed coating film, thereby providing a firm and strong bond to the coating film, thereby preventing loss of tensile strength and adhesive strength. Function.

On the other hand, the inorganic filler used in the present invention should be appropriately used in the type and mixing ratio, even if the emulsion having excellent air permeability, if the content of the inorganic filler is high, the waterproof coating will form a strong coating film breakage of the waterproof coating when the structure cracks The phenomenon may occur and may also cause a decrease in the properties of the entire waterproof coating. However, on the contrary, when the content of the inorganic filler is low, air permeability may be insufficient, causing swelling of the waterproof coating.

Inorganic fillers contribute to the formation of modular sheets including functional cement, silica sand, clay and other additives as described above, and contribute to the waterproofing properties after curing such as elongation and the increase of waterproof coating properties. To form fine pores (pores) in the coating film serves to improve the permeability and moisture permeability.

It is preferable to contain 8-16% by weight of the cement, but when it is used below 8% by weight, the strength of the cured coating film and the dense coating film formed by the binder are reduced, and the waterproofing property is reduced. When used, the strength of the cured coating film is increased, but it causes a decrease in elongation and durability.

Silica sand enhances the strong bonding of the coating film and effectively contributes to increase the wear resistance of the waterproof coating film, it is preferable to use 20-40% by weight of the total weight in the size of 100-300㎛. In this case, the size of the silica sand can be adjusted according to the role of the coating film and the characteristics of the coating film applied. If the amount of powder used is less than 20% by weight or finely divided silica sand increases the denseness of the waterproofing film, but the characteristics of the waterproofing film are impaired. Inhibits formation.

Clay is used 1.5-4% by weight to strengthen the structure of the coating film and to supplement the durability, and as a filler to reduce the weight of the inorganic coating film, improve workability, and improve the dry film thickness. Therefore, when using 4 weight% or more, the durability of a dry coating film falls, and when using it at 1.5 weight% or less, it is difficult to obtain workability and the thickness of a waterproof coating film.

The long-fiber additives that can be used as other additives provide 0.5% to 1.0% by weight, which contributes to the air permeability and moisture permeability, and increases the binding of organic polymers and inorganic fillers, thereby improving the firmness of coatings when forming waterproof coatings. When the weight% or less, the effect of addition is insignificant, mud crack occurs when forming the coating film, and when it is used at 1.0 weight% or more, the viscosity becomes high and the workability becomes poor, and a uniform coating film is not obtained.

Since the inorganic elastic coating waterproofing agent of the present invention is a two-component type, in order to serve as a waterproofing coating agent, the content of each component is determined according to the mixing ratio of the binder in the emulsion form and the filler in the powder form. It becomes the main factor to decide. When the mixing ratio is used as a waterproof coating, the ratio of the binder and the filler is set to 1: 0.5 to 1.5, and when the mixing ratio is out of the range, the field workability is insufficient, and the durability, adhesion, strength, etc. of the inorganic coating film Degradation occurs.

In general, the coating waterproofing agent is a product with a lot of workability according to the season, so it can be applied to all four seasons, and the optimum mixing ratio for showing the optimal coating properties and waterproofing performance is preferably 1: 0.82.

The reason for setting the mixing ratio as described above is that when the ratio of the binder and the filler is lower than 1: 0.5, the elongation of the coating film is increased, but the breathability and waterproof property of the waterproof property may be reduced, resulting in swelling of the waterproof coating film. When the ratio of the filler is higher than 1: 1.5, the strength of the coating film is increased, but cracking occurs due to breakage of the waterproof film and a decrease in elongation.

Meanwhile, the inorganic elastic coating waterproofing primer forming the adhesive layer may be, for example, a mixture of a binder and a filler in a ratio of 1: 0.82 in the inorganic elastic coating waterproofing and then diluted by adding 3-3.5 times water thereto. Can be.

In addition, as the protective film, any one of a protective mortar or a top coating for protecting the surface with imparting coloration and non-slip function of the top surface may be used. The composition usable as the top coating agent is, for example, 40-60% by weight of the moisture-permeable acrylic ester emulsion, which is a major element of the film formation, 1-5% by weight of water used as a diluent, and 0.01-0.5% by weight of an antifoaming agent for removing bubbles. , 8-10% by weight of a colorant for coloring the coating film, and 30-45% by weight of silica sand for imparting a non-slip function. As such, the top coating agent preferably uses an emulsion of the same type as the waterproofing agent composition.

The composite coating film formed on the base material is preferable in terms of forming a continuous waterproof film to be directly applied at the waterproof construction site, but if necessary, after forming a composite coating sheet of a predetermined standard at the factory, the composite coating at the waterproof construction site It may be constructed by sealingly sealing the periphery of the coating sheet.

(Example)

(2 component inorganic type elastic coating waterproofing agent)

The coating film waterproofing agent of the present invention described above will be described in more detail with reference to a preferred embodiment.

First, the composition of the two-part inorganic-based elastic coating film waterproofing agent is configured as shown in Table 1 to prepare Examples 1 to 5, Comparative Example 1, and Comparative Example 2. In this case, the binder was stirred for 30 minutes after mixing water and an antifoaming agent in an acrylic ester emulsion to prepare a uniform liquid, and the viscosity was adjusted to 7000 cps, pH = 10. The filler was added to the silica sand as a functional cement, clay and other additives in order with stirring, followed by rotation at 600 rpm for 1 hour for mixing.

The binder in emulsion form is then placed in the mixing vessel and slowly added while mixing the powder form filler and stirred for 5 minutes to ensure sufficient mixing.

Example 1 Example 2 3 to implementation Example 4 Example 5 Comparative Example 1 Comparative Example 2 Mixing ratio (binder: filler) 1: 0.5 1: 0.82 1: 1 1: 1.2 1: 1.5 1: 0.25 1: 1.8 Binder Acrylic ester emulsion 47.62 47.62 47.62 47.62 47.62 47.62 47.62 water 2.36 2.36 2.36 2.36 2.36 2.36 2.36 Antifoam 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Filler Quartz sand 19.67 27.32 32.79 39.34 49.18 8.20 59.02 cement 7.87 10.93 13.11 15.74 19.67 3.28 23.61 clay 1.97 2.73 3.28 3.93 4.92 0.82 5.90 additive 0.49 0.69 0.49 0.99 1.25 0.20 1.47

Thereafter, the rollers were coated with a uniform coating film and cured for 14 days, and then subjected to a physical property test as shown in Table 2 according to the standard of KS F 4919, and the results are shown in Table 2.

Test Items Reference value Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Adhesion strength 8.2 and later 8.9 9.2 9.0 8.7 8.4 7.3 6.9 Resistant to cracking No abnormality pass pass pass pass pass pass fail Absorption amount 2.0 or less 0.48 0.52 0.83 1.16 1.44 0.82 2.42 The tensile strength 10.2 or more 28.4 32.8 30.4 36.2 20.4 12.5 5.1 Elongation (%) 50 or more 80 78 75 70 50 57 42 Tearing performance 5.1 and above 21 24 20 12 10 5.5 4.6 Water resistance No abnormality pass pass pass pass pass fail fail Workability No abnormality pass pass pass pass pass fail fail

As described above, the coating waterproofing agent of the present invention increases the elongation rate as the content of the binder increases, and as the content of cement and siliceous sand increases, the absorption rate increases and the adhesion strength and tearing performance decrease.

Overall, Example 2 is excellent in adhesion strength, elongation rate, tearing performance, and shows overall uniform physical property values, and the workability of the actual site is also excellent. In addition, Example 1 and Example 3 also show almost the same physical properties as in Example 2, in the case of Examples 4 and 5 was accompanied by an increase in the viscosity of the filler content in the mixing process, but the workability was unreasonable, Example 1 and Example 3-5 also appeared to fully satisfy the KS specification.

In Comparative Examples 1 and 2 described above, most of the physical properties do not meet the KS standards, and in particular, in the workability, Comparative Example 1 is difficult to form a uniform coating film and the phenomenon of being pushed during roller and brush work, and the binder content is increased. Elongation improved while tensile strength decreased. In the case of Comparative Example 2, the particles of the filler powder were agglomerated due to the inability to uniformly mix during use, and it was difficult to work with rollers and brushes, and the amount of silica sand and cement increased, so that the amount of absorption increased, accompanied by a decrease in elongation. It was.

(Composite waterproof construction method)

With reference to the accompanying drawings showing a preferred embodiment of the composite waterproof construction method using the coating film waterproofing agent of the present invention described above in more detail.

2 is a cross-sectional view illustrating a structure in which a waterproof construction is performed on a rooftop according to the present invention, and FIG. 3 is an enlarged view of part X of FIG.

Features of the composite waterproof construction method of the present invention, for example, on the base layer of the concrete slab 20, such as a rooftop, roof, basement of the building or various fluid storage tanks, such as a rigid plastic waterproof sheet 21 A composite waterproofing method that forms the watertight and durable waterproof layer by applying the above-mentioned inorganic elastic coating waterproofing agent on the surface of the sheet after installation, and it is a dry composite which can completely prevent leakage by collecting only the advantages of waterproofing the sheet and the waterproofing of the coating layer. Waterproof method.

In the composite waterproof construction method of the present invention, a first step of carrying out a plumbing construction to achieve a smooth drainage of the ground surface of the concrete slab 20, and a waterproof sheet made of a plurality of predetermined standards as a base material on the ground surface (21) For example, a second step of partially bonding each of the polyethylene sheet attached to the non-woven fabric, and sealingly bonded in a state where the peripheral portion overlaps with the peripheral portion of the other sheet by a predetermined width, and the upper surface of the waterproof sheet 21 A third step of forming an adhesive layer 22 by applying an inorganic elastic coating film primer to the upper surface of the adhesive layer, and applying the inorganic elastic coating film waterproofing agent at least twice to the first and second waterproofing films 23 and 24. The fourth step of forming and the fifth step of forming a protective film 25 by applying a coating film protective agent on the upper surface of the second waterproof film.

To explain this in detail, first, when the water gradient on the base surface of the concrete slab 20 is a roof-top waterproofing for walking, as a first step process, it has a gradient of 1/100 or more if it is a non-pedestrian roofing waterproofing. This makes it possible to drain smoothly without stagnation, and cures the moisture content of the base surface to preferably be 8% or less.

In addition, when there is a concern that the temperature will be below 5 ℃ or within 6 hours, it should be avoided or a heat curing method should be taken. In case of strong wind, the construction should be avoided.

On the other hand, in the case of waterproof construction for the existing building as a background treatment before construction, remove the aging lattices of the base surface of the concrete slab 20, and cleans the protrusions and foreign matter, and if the crack width generated is more than 0.3mm V cut Repair with old dough material.

Subsequently, as a second step process, for example, it has a size of 1000 × 100 × 0.20 cm, and preferably has a nonwoven fabric on the upper surface to serve as a reinforcement for crack prevention while at the same time exhibiting a strong bonding force when coating the inorganic coating waterproofing agent. Using a waterproof sheet 21 made of a hard PE sheet attached to the thermal bonding method 21a) as a base material to partially adhere to the base surface using a silicone, adhesive or adhesive mortar, and to fix the waterproof sheet 21 The machine can be fixed by, for example, a nail 21b or the like using a mechanical fixation method.

Partial adhesion of the waterproof sheet 21 prevents the waterproof film formed on the upper surface of the mother, that is, the crack of the concrete slab 20 from being affected.

In this case, between the waterproof sheet 21 and the waterproof sheet 21 is bonded using a hot melt adhesive or silicone or a normal room temperature adhesive 21c in a state where the peripheral portion overlaps about 5 cm as shown in FIGS. 4 and 5 or Sealing is performed by the hot welding method using a hot air welding machine. In this case, the end of the sheet is preferably fixed using a nail or the like. In addition, the adhesive portion of the sheet and the sheet may be reinforced by attaching a nonwoven fabric after bonding with a molten adhesive.

In addition, the sealing bonding method of the waterproof sheet 21 and the waterproof sheet 21 is a molten adhesive between the waterproof sheet 21 and the waterproof sheet 21 at intervals as shown in FIG. 6 in addition to the partial overlapping method described above. It is also possible to apply (31) and to attach the nonwoven fabric for reinforcement on top of the adhesive (31).

In addition to the polyethylene (P.E.)-Based hard (soft) sheet as described above may be used sheet, such as iron plate, wood, acrylic, FRP, asphalt, roofing depending on the part to be waterproof. In addition, the upper surface of the substrate, such as acrylic, FRP, asphalt, roofing, etc. described above hard P.E. In order to increase the adhesive force with the waterproof membrane like the sheet, it is preferable to attach the nonwoven fabric in a heat fusion method during molding production in advance. In this case, the plurality of hair roots 35 of the nonwoven fabric 21a is implanted in the waterproof sheet base to form a strong attachment, and a plurality of hair shafts 33 are exposed on the upper portion of the nonwoven fabric 21a to be applied in the following subsequent process ( 22 firmly supports

Thereafter, an inorganic elastic coating waterproofing primer is applied to the upper surface of the waterproof sheet 21 as a third step to form an adhesive layer 22. In this case, the adhesive layer 22 forms a strong bond with the plurality of hair shafts 33 of the nonwoven fabric 21a.

The primer used as the adhesive layer 22 is a mixture of the emulsion-type binder and the powder-type inorganic filler, which is used as the inorganic elastic coating film waterproofing agent, preferably a weight ratio of 1: 0.82, that is, 17kg of the binder and 14kg of the inorganic filler after mixing Stir for 5 minutes, add 1.5 to 2 times the water-coated waterproofing agent as a diluent, and prepare by mixing for 5 minutes with a mixer, and then use a roller or a brush to uniformly coat the waterproofing sheet 21, that is, nonwoven fabric. It is apply | coated to the upper surface of 21a. In this case, the amount is preferably 0.4-0.5kg / m 2. In this case, the drying time of the adhesive layer 22 is preferably about 40 minutes.

Subsequently, as a fourth step, the above-mentioned binder and inorganic filler are mixed at a weight ratio of 1: 0.82 (in this case, water, which is a diluent, is not mixed), and then the binder is placed in the mixer container in the same manner as the above primer and the inorganic filler is added. The mixture is slowly added while mixing, and then sufficiently stirred to prepare an inorganic elastic coating film waterproofing agent, and the first waterproof film 23 is formed by uniformly applying a 0.3-0.5 mm thickness on the adhesive layer 22 uniformly using a roller or a brush. In this case, the required amount is preferably 1.0 kg / m 2.

After 1 hour of drying time, the inorganic elastic coating film waterproofing agent was applied on the first waterproofing film 23 in a thickness of 0.3-0.5mm in a required amount of 0.7kg / m 2, to form a second waterproofing film 24. And dry for 2 hours.

In the fifth exposure process, in the exposure method, the top coating agent is applied on the upper surface of the second waterproofing film by using a brush or a roller in a required amount of 0.5 kg / m 2, preferably once in a thickness of 0.1-0.2 mm. 25) and after 12 hours of drying time all processes are completed. In this case, the user may visually satisfy the user by mixing and mixing a desired color, for example, a green colorant, as necessary in the top coating agent. In addition, when the conventional paint is used, the surface is slippery, but there is a problem of easily falling, but the top coating agent contains 30 to 45 wt% of silica sand to improve non-slip function and wear resistance.

On the other hand, in the non-exposure method, the protective film 25 may be coated with cement mortar to a thickness of about 100 mm.

Upon completion of the first to fifth steps as described above, a composite coating waterproof structure as shown in FIGS. 3 and 7 is obtained, and the physical properties of the inorganic elastic composite coating film 22-25 except for the waterproof sheet are measured. The results are summarized as shown in Table 3 below.

Test Items Test value Tensile Strength (kgf / ㎠) 72 Elongation (%) 104 Tear strength (kgf / ㎠) 34 Adhesive strength (kgf / ㎠) Adhesion to the floor 26.4 Adhesion with protective mortar 15.2 Pitching cost 0.08 importance 1.20

On the other hand, in the composite coating film waterproof structure of the above embodiment, as in the embodiment, only the waterproof sheet 21 having the nonwoven fabric 21a attached to one side surface is pre-molded in the factory, and then the rest of the process is performed in the field as well as constant in the factory. After manufacturing the second to fifth processes from the sheet of the standard it is also possible to finish after the construction by the adhesive or thermal welding method similar to that shown in Figures 4 to 6.

In addition, waterproof construction for long and narrow spaces such as apartment verandas can be produced by tailoring the latter completed composite coating waterproof sheet to the floor shape of the veranda or by cutting it according to the pattern of the floor to be waterproofed in the field. Do.

Furthermore, the inorganic composite coating waterproofing structure of the present invention has superior properties as compared to the conventional rubberized asphalt sheet waterproofing, urethane waterproofing or asphalt waterproofing, as described in Table 3, except for the substrate. It shows an excellent effect, and the inorganic composite coating film has a breathability which does not have in the conventional waterproof structure, it is possible to emit even when the bottom water vapor expands by heat.

Therefore, the composite coating waterproof structure of the present invention exhibits sufficient waterproofing properties only by the composite coating film without using the sheet-like substrate according to the second process as shown in FIG.

The inorganic composite coating waterproof structure of FIG. 8 includes an adhesive layer 22, a first waterproofing film 23, a nonwoven fabric reinforcing layer 21a, a second waterproofing film 24, and a protective film 25 on a base surface of the concrete slab 20. ) Is obtained by sequentially applying the same method as the fixing shown in Figures 3 and 7.

This waterproof structure can be easily treated by using water as an adhesive aid at room temperature, and can be wet-bonded even under construction conditions of the base surface, and the maintenance cost is less than 1/5 of the conventional waterproof structure. It is a wet construction method that can be treated with.

As described above, in the composite coating waterproofing of the present invention, the advantages of the sheet waterproofing and the coating waterproofing are maximized, and the disadvantages are eliminated by mutual complement.

In addition, since the waterproof sheet used as the base material is not completely fixed to the underlying layer and is installed in a partially adhesive or non-adhesive manner, even if there is a crack in the underlying layer, the waterproof layer does not affect the waterproof layer at all and thus does not cause breakage and aging of the waterproof layer. In addition, the swelling phenomenon of the waterproof layer is conventionally generated by the background water vapor, but the inorganic coating waterproof layer of the present invention is not breathable and moisture-permeable.

Furthermore, in the conventional close-type waterproofing method, since adhesion deterioration occurs in a portion where the background treatment is not performed, very high smoothness is required to prevent this, but the waterproofing method of the present invention greatly affects the state of the ground because the base surface and the substrate are secretly attached. You will not receive.

In addition, in the present invention, the construction is simple and easy to be installed at a low cost, excellent durability, convenient maintenance, and can be partially repaired only in the case of the occurrence of the lower part can be quickly repaired.

Therefore, the coating film waterproofing agent of the present invention has high elasticity, tensile strength and elasticity, and can withstand high water pressure of 5.0 kg / cm 2 or more, and has high tensile strength, so that it can withstand the occurrence of cracking of the floor by severe vibration. .

In addition, there is no change in physical properties in the change of temperature, excellent stability against UV rays or infrared rays, adhesion to wet surfaces, high adhesion to any floor surface such as concrete, metal, wood, gypsum board, plastic, and more. Since the emulsion forms a coating film, it exhibits excellent water resistance and moisture resistance.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (12)

In the two-component inorganic elastic coating film waterproofing agent consisting of an emulsion-type binder and a powder-type inorganic filler, The binder is composed of 35-65% by weight of the acrylic ester emulsion, 1.7-3.5% by weight of water and 0.01-0.5% by weight of the antifoaming agent, the inorganic filler is 20-40% by weight of silica sand, functional cement 8-16 A two-component inorganic elastic coating waterproofing agent, comprising: by weight, 1.5-4% by weight of clay, and 0.5-1.0% by weight of other additives. The two-part inorganic elastic coating waterproofing agent according to claim 1, wherein the mixing ratio of the binder and the inorganic filler is set at 1: 0.5 to 1.5. The two-part inorganic elastic coating waterproofing agent according to claim 2, wherein the mixing ratio of the binder and the inorganic filler is set to 1: 0.82. The two-component inorganic elastic coating waterproofing agent according to claim 1, wherein the acrylic ester emulsion comprises an acrylic ester resin having a particle diameter in the range of 0.3-30 µm. In the two-component inorganic elastic coating film waterproofing agent consisting of an emulsion-type binder and a powder-type inorganic filler, The binder is composed of 35-65% by weight of acrylic acid-styrene copolymer emulsion, 1.7-3.5% by weight of water and 0.01-0.5% by weight of antifoaming agent, the inorganic filler is 20-40% by weight of silica sand, functional cement 8 -16 weight percent clay, 1.5-4 weight percent clay, 0.5-1.0 weight percent other additives, The mixing ratio of the binder and the inorganic filler is a two-component inorganic elastic coating film waterproofing agent is set to 1: 0.5 to 1.5. Conducting a sales work to ensure smooth drainage of the concrete base surface; A second step of partially bonding a lower surface of each of the plurality of waterproof sheets on which the nonwoven fabric is attached to the surface on the base surface, and at the same time, sealingly adhering the peripheral portion of the sheet to a predetermined width overlapping with the peripheral portion of the other sheet; Forming an adhesive layer by applying an inorganic elastic coating waterproofing primer to the upper surface of the waterproof sheet; Applying an inorganic elastic coating waterproofing agent at least once to the upper surface of the adhesive layer to form a waterproofing film; Composite coating waterproofing method comprising the step of forming a protective film by applying a coating film protective agent on the upper surface of the waterproof film. The method of claim 6, wherein the waterproof sheet is made of any one of polyethylene (P.E.), iron sheet, wood, acrylic, FRP, asphalt, and roofing. According to claim 6, wherein the inorganic elastic film waterproofing agent is a binder consisting of 35-65% by weight of acrylic ester emulsion, 1.7-3.5% by weight of water and 0.01-0.5% by weight of antifoaming agent, and 20-40% by weight of silica sand The composite coating waterproofing method, characterized in that the two-component coating waterproofing agent consisting of an inorganic filler consisting of 8-16% by weight of functional cement, 1.5-4% by weight of clay, 0.5-1.0% by weight of other additives. The method of claim 6, wherein the coating protector is composed of 40-60% by weight of an acrylic ester emulsion, 1-5% by weight of a diluent, 0.01-0.5% by weight of an antifoaming agent, 8-10% by weight of a colorant, and 30-45% by weight of silica sand. Composite coating waterproofing method. The composite coating waterproofing method according to claim 6, further comprising fixing the waterproof sheet to the base surface using a plurality of physical fixing members. Conducting a sales work to ensure smooth drainage of the concrete base surface; Forming an adhesive layer by applying an inorganic elastic coating waterproofing primer to the base surface; Forming a first waterproofing film by applying an inorganic elastic coating film waterproofing agent to the upper surface of the adhesive layer; Coating a non-woven fabric sheet for reinforcing a film on the first waterproof film; Applying an inorganic elastic coating waterproofing agent at least once on an upper surface of the nonwoven fabric sheet to form a second waterproofing film; Composite coating waterproofing method comprising the step of forming a protective film by applying a coating film protective agent on the upper surface of the waterproof film. Waterproof sheet with a nonwoven fabric attached to the upper surface, An adhesive layer formed by applying an inorganic elastic coating waterproofing primer to an upper surface of the waterproof sheet; A plurality of waterproof films formed by applying at least one inorganic elastic coating waterproofing agent to the upper surface of the adhesive layer; Composite coating waterproof sheet, characterized in that consisting of a protective film formed by applying a coating film protective agent on the upper surface of the waterproof film.