KR102213806B1 - Waterproofing method of structures - Google Patents

Abstract

Disclosed is a structure waterproofing method capable of reducing water leakage that occurs intensively in a corner portion by reinforcing the corner portion with a waterproofing layer. According to an embodiment of the present invention, a structure waterproofing method comprises: (a) a surface treatment step of grinding a concrete floor or wall surface to obtain a desired level of roughness; (b) a corner processing step of processing a corner portion where the wall and the floor meet each other after the surface treatment step; (c) a cement paste waterproofing step of applying a mixture of cement and a waterproofing solution to the processed corner portion; (d) a mortar waterproofing step of applying waterproof mortar to an upper portion of the cement paste waterproofing; (e) a finishing step of finishing the floor and the wall surface; and (f) a coating waterproofing step of applying a coating waterproofing material to the finished surface.

Description

Waterproofing method of structures

The present invention relates to a waterproofing method of a structure, and more particularly, to a waterproofing method of a structure capable of reducing water leakage concentrated in the corners by reinforcing a waterproofing layer in the corners.

Concrete is composed of aggregates such as water, cement, sand, and gravel, and is used to form building structures such as buildings, bridges, and tunnels by using a hydration reaction in which cement and water react and harden.

In general, construction structures such as bridges or buildings are made of concrete and reinforced bars, and various interior and exterior materials are installed inside and outside the structures, but waterproofing materials are applied or applied to the roof or slab of such structures to prevent leakage. A waterproof layer was formed to prevent it.

Such a concrete structure is divided into a basement layer buried in the ground and a surface layer exposed to air. The basement layer is always in contact with moisture, and durability may decrease as contraction and expansion are repeated according to changes in temperature. Deterioration of the durability of concrete is particularly affected by moisture, and water acts as a medium to deteriorate concrete, and dissolved sulfate, nitrate, carbonate, acid rain, etc. can accelerate damage to the concrete structure.

Methods of imparting waterproofness to concrete include a method of forming a waterproofing membrane on the concrete surface, a method of infiltrating a waterproofing agent to a certain depth, and a method of making the concrete structure itself a waterproof structure by preventing the occurrence of voids and cracks inside the concrete structure. , The method of forming a waterproofing film on the double concrete surface is called waterproofing of a coating film, and it has the advantage that it can be used not only in buildings without any other technology, but also can be performed in addition to the other two waterproofing methods. It is widely used for waterproof construction of existing buildings.

However, in the case of the existing coating waterproofing method, since the same coating is formed regardless of the wall and the floor, the adhesive strength of the coating decreases at the corner where the wall and the floor meet, which may cause peeling of the coating. It has a disadvantage that it cannot prevent damage caused by movement.

(0001) Korean Patent Registration No. 10-0864525 (0002) Korean Patent Registration No. 10-0977160

The present invention was conceived to solve the above problems, and an object of the present invention is to provide a waterproofing method for a structure capable of providing more reliable waterproofing power to corners by solving the problems in the existing waterproofing of coatings when waterproofing the inner wall of a building. To provide.

Another object of the present invention is to improve the adhesion between the waterproofing solution and the structure by processing the corners of the structure before applying the coating waterproofing to facilitate penetration of the waterproofing solution for coating waterproofing, thereby improving the durability of the waterproofing layer. It is to provide a waterproof method.

Another object of the present invention is to provide a waterproofing method for a structure in which the durability of the waterproof layer is increased by reducing damage to the waterproof layer due to the movement of water concentrated in the corner by reinforcing the coating waterproof layer in the corner.

The subject of the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The structural waterproofing method according to an embodiment of the present invention for solving the above problems includes (a) a surface treatment step of grinding a concrete floor or wall surface to obtain a desired level of roughness; (b) a corner processing step of processing the edge portion where the wall and the floor meet after the surface treatment step; (c) Gossori waterproofing step of mixing and applying a cement and a waterproofing solution to the processed corner portion; (d) a mortar waterproofing step of applying a waterproof mortar on the top of the high-sound waterproof layer; (e) a finishing step of finishing the bottom surface and the wall surface; And (f) a coating waterproofing step of applying a waterproofing material to the finished surface.

In one embodiment, the step (a) comprises the steps of physically treating the floor or wall by repeating 2 to 10 times using a metal grinder equipped with a diamond wheel; A chemical treatment step of etching the physically treated bottom surface or wall surface using an acid or a base; And a step of waterproofing and reinforcing the floor or wall by infiltrating a permeable waterproofing agent into the floor or wall after the chemical treatment step,

The step (b) may include drilling a corner portion where the wall and the floor meet after the surface treatment to a predetermined depth; Injecting a permeable waterproofing solution into the perforation; And infiltrating the permeable waterproofing solution into the concrete of the wall and the bottom by pressing the perforation, wherein the perforation is performed to have a distance of 2 to 50 cm with a depth of 1 to 100 mm, and the pressurization is performed by the Sealing the outer surface of the perforated portion with pressure maintaining means; Pressurizing and injecting the water-impermeable waterproofing solution into the sealed perforation for 1 to 20 minutes; And recovering the excess permeable waterproofing liquid present in the perforated portion and removing the pressure maintaining means,

The step (c) may include preparing a waterproof cement by mixing a mixed waterproofing solution with cement; Inserting an injector having a diameter smaller than that of the perforated portion into the perforated portion; Injecting the waterproof cement into the perforation using the inserted injector; Pressing the injected waterproof cement; And after removing the injector, further applying and curing the waterproof cement to form a high-sound waterproof layer, wherein the waterproof cement is 20 to 100 parts by weight of water and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement. It is manufactured by mixing, and the injector has a size of 5 to 20 mm in diameter, and 1 to 10 perforated parts having a size of 1 to 10 mm are installed at regular intervals on the tip and side, and the waterproofing cement is additionally applied and cured. The step of making is a step of additionally applying the waterproof cement so that the upper surface has an angle of 30 to 60° with respect to the floor surface and the cross section forms a triangle at the corners of the wall surface and the floor surface,

The step (d) comprises: preparing a waterproof mortar by mixing 50 to 150 parts by weight of sand, 50 to 150 parts by weight of water, and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement; Including the step of applying and curing the waterproof mortar to a thickness of 1 ~ 10mm on the upper portion of the waterproof layer,

The step (e) includes a step of mixing cement or mortar and water on the floor or wall and then applying, and the floor finishing step includes 50 to 150 parts by weight of sand relative to 100 parts by weight of cement on the top of the floor. Applying a mortar consisting of 50 to 150 parts by weight of water, and molding the applied mortar to have an angle of 1 to 5° based on a drain hole; Drying the mortar; And a step of filling up cracks generated on the surface of the dried mortar, wherein the wall surface finishing step includes 50 to 150 parts by weight of sand and 10 to 50 parts by weight of water relative to 100 parts by weight of cement on the wall surface. Applying to a thickness of; And spraying 1 to 3 kg of water per 1 m 2 on the applied mortar and arranging the surface,

The step (f) may include applying a primer to the wall or bottom surface; And applying a coating film waterproofing solution on the primer, wherein the coating film waterproofing solution consists of a first urethane waterproofing solution and a second urethane waterproofing solution, and applying a second urethane waterproofing solution after applying the first urethane waterproofing solution Provides a waterproofing method.

According to an exemplary embodiment of the present invention, damage to the waterproof layer concentrated on the corner may be minimized by reinforcing the waterproof structure of the corner part, thereby helping to improve the life of the waterproof insect.

In addition, by processing the corners where the wall and the floor meet before applying the coating waterproofing, the waterproof layer can be extended not only to the surface of the structure but also to the inside of the structure to prevent the dropping of the waterproof layer, providing a waterproof layer with high durability compared to the existing waterproof layer. I can.

In addition, by reinforcing the coating waterproof layer of the corner portion to reduce damage to the waterproof layer due to the movement of water concentrated in the corner portion, it is possible to provide a waterproof layer with increased durability.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present invention.

1 shows a flow chart of a waterproofing method according to an embodiment of the present invention.
2 is a diagram showing a waterproofing method according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a waterproof method according to an embodiment of the present invention.
4 is a cross-sectional view showing a cross section after completion of the waterproofing method in which a plurality of perforations are performed according to an embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described in this specification may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only intended to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it is to be understood as including all equivalents or substitutes included in the spirit and scope of the invention.

Terms including ordinal numbers such as first and second may be used to describe various elements, but these elements are not limited by the above-described terms. The above-described terms are used only for the purpose of distinguishing one component from other components.

In the present specification, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility. When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Meanwhile, a "module" or "unit" for a component used in the present specification performs at least one function or operation. In addition, the "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of "modules" or a plurality of "units" excluding "module" or "unit" to be performed in specific hardware or performed by at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

Figure 1 is a flow chart showing the waterproofing method of the present invention, Figure 2 is a cross-sectional view of the construction method of the waterproofing method of the present invention.

The present invention (a) a surface treatment step of grinding the concrete floor or wall surface to come out a desired level of roughness; (b) a corner processing step of processing the edge portion where the wall and the floor meet after the surface treatment step; (c) Gossori waterproofing step of mixing and applying a cement and a waterproofing solution to the processed corner portion; (d) a mortar waterproofing step of applying a waterproof mortar on the top of the high-sound waterproof layer; (e) a finishing step of finishing the bottom surface and the wall surface; And (f) a coating waterproofing step of applying a coating waterproofing material to the finished surface.

The structure waterproofing method of the present invention relates to a waterproofing method performed during or after construction of a structure, and is generally performed on a rooftop portion, but can also be applied to waterproofing of a basement or a general indoor.

The step (a) is a surface treatment step in which a concrete floor or wall surface is ground to obtain a desired level of roughness, removing foreign substances present on the surface of the structure 100, and making the surface flat. This is an easy process.

To this end, step (a) may include physically treating the floor or wall surface by repeating 2 to 10 times using a metal grinder equipped with a diamond wheel; A chemical treatment step of etching the physically treated bottom surface or wall surface using an acid or a base; And waterproofing and reinforcing the floor or wall by infiltrating a permeable waterproofing agent into the floor or wall after the chemical treatment step. The floor or wall surface has an uneven surface due to mold marks and burrs generated during concrete curing immediately after construction is completed. Such an uneven surface not only makes it difficult to uniformly construct a waterproofing solution, which will be described later, but also causes water to accumulate in a certain portion, thereby acting as a main cause of water counting. Therefore, it is desirable to clean the surface by removing it. In addition, the surface preparation may be repeatedly performed until a desired roughness appears on the surface. If the surface is polished too uniformly, adhesion to the waterproofing material to be described later may decrease. Also, if it is too rough, it may cause water to collect due to the formation of valleys on the floor. Therefore, it is preferable that the surface arrangement is arranged to the extent that the surface can be flattened when the waterproofing material is applied while having an appropriate roughness.

For the surface cleaning, a metal grinder equipped with a diamond wheel may be used. When the surface treatment is performed using the metal grinder, it is easy to grind the gravel protruding from the concrete floor, and the grinding speed is fast, so that a lot of time is not spent on the surface treatment, thereby improving the overall surface cleaning efficiency.

Such physical surface treatment may be performed multiple times by adjusting the mesh size of the metal diamond wheel according to the condition (roughness) of the wall or floor. Specifically, the surface treatment may be performed multiple times by applying a metal diamond wheel of #20, #50, or #100, respectively, depending on the condition of the wall or floor. When the surface treatment is performed in stages according to the state of the wall or floor as described above, it is possible to more efficiently provide the wall or floor of a desired roughness state while saving time and cost.

In addition, after the physical surface treatment method as described above, surface treatment may be performed using a chemical method. Chemical surface treatment is carried out through a method of corroding the surface of the concrete using an acid or base, and the acid or base used at this time chemically polishes the surface of the wall and floor and removes foreign substances attached to the surface. can do. In addition, the acid or base treatment of the wall surface and the floor surface chemically activates the wall surface and the floor surface, and at the same time, it is changed into a porous material to increase affinity with a waterproofing material to be described later.

It is also possible to repeatedly perform the chemical surface treatment and physical surface treatment as described above. In the case of chemical surface treatment, the surface of the wall and floor can be polished through chemical etching, but damage to the wall and floor may occur due to chemical substances, and in the case of physical surface treatment, damage to concrete compared to chemical surface treatment. Although this is small, it requires a lot of strength and effort. Therefore, in order to compensate for these, by weakening the concrete surface through chemical etching and then physically polishing it, the part where the chemical change has occurred is eliminated, so that the concrete can be polished with little effort and energy. By performing chemical polishing after the physical polishing as described above, it is possible to chemically activate the surface and at the same time change it into a porous material to increase the affinity with the waterproof layer.

After the chemical treatment step, the bottom surface or the wall surface may be waterproofed and reinforced by infiltrating the permeable waterproofing agent 300 into the floor surface or the wall surface. When the above-described polishing operation is performed, the wall surface and the floor surface are physically or chemically damaged. If this is left unattended, the floor or wall may come off due to weakened concrete. In order to prevent this, reinforcement treatment may be performed by infiltrating the permeable waterproofing agent 300 into the floor or wall surface (Fig. 2(a)).

The permeable waterproofing agent 300 is a kind of polymer mainly made of silicone, and may penetrate into the voids of concrete forming the wall and the floor, fill the voids and cure the voids. Through this, the concrete surface can be reinforced, and concomitantly, the concrete can have waterproof properties.

The step (b) is a corner processing step of processing the edge portion where the wall and the floor meet after the surface treatment step, and the corner portion is drilled to a predetermined depth so that the waterproofing solution, which will be described later, can sink into the structure (Fig. b)).

For this, the step (b) may include perforating a corner portion where the wall and the floor meet after the surface treatment to a predetermined depth; Injecting a permeable waterproofing solution into the perforation; And infiltrating the permeable waterproofing solution into the concrete of the wall and the bottom by pressing the perforated portion.

In the case of the existing waterproofing method, a waterproofing solution is applied to the corners without any treatment, so when stress is concentrated on the corners, there are many cases where a dropout phenomenon occurs in this part. In addition, in a general structure, water often flows in close contact with the wall due to its surface tension. Accordingly, the edge portion is often damaged more than other parts by the flow of water. Therefore, in the present invention, in order to reinforce such corners, the corners are drilled 200 at regular intervals, and then the waterproofing solution is applied to this area to improve the bonding strength between the waterproofing solution and concrete, and to minimize damage due to water flow, especially the peeling of the waterproofing layer. can do.

Looking at this in detail, the step of perforating the edge portion where the wall and the floor meet after the surface treatment to a predetermined depth is a step of forming a plurality of perforations 200 having a predetermined depth in the edge portion formed by meeting the wall surface and the bottom portion. At this time, the perforation 200 may be performed to have a spacing of 2 to 50 cm with a depth of 1 to 100 mm, and it is preferable to perforate circularly using a drill. If the perforation 200 is formed to a depth of less than 1 mm, it is difficult to see the effect of the perforation, and if it is performed to a depth exceeding 100 mm, it may cause a problem in the rigidity of the structure. In addition, if the distance between the perforations 200 is less than 2 cm, the strength of the concrete may decrease, and if it exceeds 50 cm, the effect of the perforations may decrease. In addition, although the perforation may be performed in one row at the corner (see Fig. 3), it is also possible to additionally perforate 1 to 5 rows at each of the wall and bottom, including one row at the corner (see Fig. 4). .

A waterproofing solution may be penetrated into the perforated corner portion 200 as described above (Fig. 2(c)). Since the perforation 200 does not perform any special treatment therein, it has a porous surface, and the structure may be weakened due to the perforation. In order to reinforce this, a waterproofing solution, in particular, a permeable waterproofing solution 300 may be injected into the perforated portion to reinforce the perforated portion 200. In addition, in order to maximize the reinforcing effect of the perforated portion 200, it is preferable that the perforated portion 200 into which the permeable waterproofing liquid 300 is injected is pressurized so that the permeable waterproofing agent 300 penetrates deeper into the concrete.

The pressurization is performed by sealing the outer surface of the perforated part 200 with a pressure maintaining means; Pressurizing and injecting the water-permeable waterproofing liquid 300 into the sealed perforation 200 for 1 to 20 minutes; And recovering the excess permeable waterproofing liquid 300 existing in the perforated part 200 and removing the pressure maintaining means, and the permeable waterproofing liquid 300 is formed by pressing the existing permeable waterproofing liquid. It can penetrate deep into concrete 2-5 times more than the applied method. After the pressure penetration is completed as described above, the excess water permeable liquid existing in the perforation part 200 may be recovered and the pressure maintaining means may be removed. In the case of the permeable waterproofing solution, if the excess waterproofing solution is left unattended, a solid phase may be formed in the perforated portion, and thus a lot of effort is required to remove it later. Therefore, it is preferable to remove this in advance so that there is no extra permeable waterproofing solution inside the perforation.

The step (c) is a high-sound waterproofing step in which cement and waterproofing solution are mixed and applied to the processed corner part, and a cement paste mixed with a cement and waterproofing solution is intensively sprayed on the corner part to form a perforation part at the corner part. In addition, it is a step of filling part of the corners (Fig. 2(d)).

For this, the step (c) may include preparing a waterproof cement by mixing a mixed waterproofing solution with cement; Inserting an injector having a diameter smaller than that of the perforated portion 200 into the perforated portion; Injecting the waterproof cement into the perforation using the inserted injector; Pressing the injected waterproof cement; And after removing the injector, it may include the step of forming a gossori waterproof layer 400 by additionally applying and curing the waterproof cement.

The waterproof cement is used to form the high-sound waterproof layer 400, and may be prepared by mixing 20 to 100 parts by weight of water and 5 to 20 parts by weight of a waterproofing liquid relative to 100 parts by weight of cement. When the water is mixed in less than 20 parts by weight, the flowability of the waterproof cement is poor, and it is difficult to inject into the perforated part 200, and when the water is mixed in excess of 100 parts by weight, cracking defects during hardening of the waterproof cement may occur. Can appear. In addition, when the waterproofing solution is mixed in less than 5 parts by weight, the waterproofing effect is deteriorated, and when it is mixed in more than 20 parts by weight, the content of cement is relatively lowered, resulting in a decrease in strength.

The waterproof cement manufactured as described above may be injected into the perforation 200 through an injector. In the case of the permeable waterproofing material 300, it has a viscosity similar to that of water, so that it can be injected by pressing, but the waterproofing cement has a higher viscosity than that of water, and the inside of the perforated part 200 is the permeable waterproofing material ( It is preferable to inject using an injector because the surface is treated by 300) and the voids are filled. At this time, as the injector has a diameter smaller than the diameter of the perforated portion 200, it can be inserted into the perforated portion, and since the inside is made in a hollow shape, the waterproof cement can be injected through the empty portion. In addition, in order to inject the cement located inside the injector into the perforated portion 200 as described above, the injector has a size of 5 to 20 mm in diameter, and a perforated portion having a size of 1 to 10 mm at regular intervals at the tip and side portions 1 to 10 can be installed. When the inner waterproof cement is pressurized using such an injector, the waterproof cement may be injected into the perforated portion 200 through the perforated portion formed in the injector. In addition, it is preferable to pressurize the waterproof cement injected as described above with a constant pressure to remove air bubbles generated during the injection of the waterproof cement.

After the injection is completed as above, the waterproof cement has an angle of 30 to 60° with respect to the bottom surface at the corners of the wall surface and the bottom surface, and the waterproof cement is additionally applied so that the cross section forms a triangle. It can be (see Fig. 2(d)). The waterproof cement may be used only for the purpose of simply filling the perforated part 200, but it is possible to prevent damage to the corner by changing the flow of water concentrated in the corner by filling the corner as described above. In addition, since the waterproof cement is connected to the waterproof cement in the perforated portion 200 even after hardening, it may have an advantage that peeling does not occur easily unlike the existing corner portions. At this time, when the upper surface of the waterproof cement has an angle of less than 30° or more than 60° from the bottom surface, the effect of reinforcing the corner part by the waterproof cement is reduced, so it is preferable to have an angle below the angle. .

The step (d) is a mortar waterproofing step of applying a waterproof mortar 500 on the upper part of the high sound waterproof layer 400. This is a step of performing mortar waterproofing capable of improving the waterproof power while protecting the high sound waterproof layer (Fig. 2(e)).

To this end, step (d) comprises: preparing a waterproof mortar by mixing 50 to 150 parts by weight of sand, 50 to 150 parts by weight of water, and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement; It may include the step of applying and curing the waterproof mortar to a thickness of 1 ~ 10mm on the upper portion of the waterproof layer of high sound.

The gossori waterproofing 400 uses waterproof cement close to a cement pool to facilitate injection into the perforated part 200. However, in the case of such a cement pool, as its durability decreases, an additional protective layer is required to reinforce it. To this end, in the case of the present invention, a waterproof mortar 500 in which 50 to 150 parts by weight of sand, 50 to 150 parts by weight of water, and 5 to 20 parts by weight of a waterproofing solution is mixed is applied on the upper part of the Gosound waterproof layer 400 Damage to the high sound waterproof layer 400 may be prevented.

In the case of cement itself, it can be mixed with water and used, but in this case, its strength is weak and may cause cracking or peeling. A typical way to reinforce this is to use mortar mixed with cement and sand. In the case of mortar, as sand mixed with cement acts as a kind of reinforcing agent, it can have higher strength than cement pool used as cement coal poison. Therefore, it is preferable to protect the waterproof layer 400 by applying a waterproof mortar 500 on the top of the waterproof layer 400 formed of waterproof cement.

At this time, the waterproof mortar 500 is preferably used in a mixture of 50 to 150 parts by weight of sand, 50 to 150 parts by weight of water, and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement. If the amount of sand is less than 50 parts by weight, it is difficult to expect improvement of the physical properties of the mortar by sand, and if it exceeds 150 parts by weight, the proportion of cement decreases, and the strength may decrease. When the water is mixed in less than 50 parts by weight, curing of the cement is impossible and defects may occur, and when water in excess of 150 parts by weight is mixed, the flowability may be increased and normal application may be difficult. Finally, when the waterproofing solution is contained in an amount of less than 5 parts by weight, the waterproofing power of the waterproof mortar may be reduced, and when it is included in an amount exceeding 20 parts by weight, the physical properties of the mortar may be deteriorated. That is, in the case of the waterproof mortar, it may have optimal waterproofness and physical properties within the above range.

The waterproof mortar 500 may be applied on the high-sound waterproof layer 400 to a thickness of 1 to 10 mm. When the waterproof mortar 500 is applied less than 1 mm, it is difficult to expect the protective effect of the high-sound waterproof layer 400, and when applied with a thickness exceeding 10 mm, a waterproof layer formed at the corner without further increase in the protective effect It may be difficult to use the space of the structure because only the thickness of the structure becomes thicker.

As described above, after forming the high-sound waterproof layer and the waterproof mortar layer at the corners, the coating layer may be waterproofed. To this end, first (e) a finishing step of finishing the floor surface and the wall surface may be performed (FIG. 2(f)).

The finishing step 600 may include a step of mixing cement or mortar and water on the floor or wall and then applying it, which can be largely divided into a wall surface finishing step and a floor surface finishing step.

The step of finishing the bottom surface 600 may include applying a mortar consisting of 50 to 150 parts by weight of sand and 50 to 150 parts by weight of water relative to 100 parts by weight of cement on the top of the floor surface; Molding the applied mortar to have an angle of 1 to 5° based on the drain hole; Drying the mortar; And it may include the step of filling the cracks generated on the surface of the dried mortar.

In the case of the floor, when water is collected, water leakage may occur due to standing objects even though waterproof construction is performed. In order to prevent this, the bottom surface is angled in a predetermined direction to finish 600, and through this, water supplied to the bottom surface can be discharged toward the drain. That is, it is preferable that the bottom surface is molded so that the applied mortar 600 has an angle of 1 to 5° relative to the drain hole so that water continuously flows in one direction. In addition, the mortar 600 used may be a mortar consisting of 50 to 150 parts by weight of sand and 50 to 150 parts by weight of water relative to 100 parts by weight of cement, which is the same as the mortar used in general. It is possible. After the mortar is poured so as to be inclined in one direction as described above, it is cured and dried, and then cracks generated during curing are filled to facilitate the waterproofing of the coating to be described later.

The wall surface finishing step 600 includes applying a mortar containing 50 to 150 parts by weight of sand and 10 to 50 parts by weight of water to a thickness of 1 to 5 mm relative to 100 parts by weight of cement; And spraying 1 to 3 kg of water per 1 m 2 on the applied mortar and arranging the surface.

Due to the nature of the wall surface standing vertically, when a general mortar is used, it may not adhere to the wall or may flow down before curing is completed. In order to prevent this, it is preferable that the mortar applied to the wall surface contains 50 to 150 parts by weight of sand and 10 to 50 parts by weight of water relative to 100 parts by weight of cement. This mortar has a relatively low content of water compared to the existing mortar. By reducing the water content, the mortar has high viscosity, and it is possible to easily adhere to the wall by applying a little pressure to the wall. . However, in this case, smooth curing may not be possible due to insufficient water. Therefore, it is preferable to spray 1 to 3 kg of water per 1 m 2 on the applied mortar for such curing. If the water is sprayed with less than 1 kg per 1 m2, curing may not be smooth, and when spraying more than 3 kg per 1 m2, a flow phenomenon of mortar applied to the wall may occur. After spraying water as described above, the surface can be cleaned and cured.

In addition, it is preferable to perform the finishing of the wall surface and the floor surface except for the corner waterproofing layer formed at the corner (see FIG. 3). In the case of the corner waterproofing layer, since a certain thickness has already been formed using the high-sound waterproof layer 400 and the waterproof mortar layer 500, an additional finish 600 is not required at this part. Therefore, it is preferable to maximize the effect of the corner waterproofing layer 400 by performing the finishing 600 only on portions other than the corner waterproofing layer 400.

The step (f) is a coating waterproofing step of applying the coating waterproofing material 700 to the finished surface, and is a step of finishing waterproofing by applying the coating waterproofing material 700 to the wall and bottom surfaces (Fig. 2 g)) .

To this end, the step (f) may include applying a primer to the wall or bottom surface; And applying a coating film waterproofing solution on the primer, wherein the coating film waterproofing solution is composed of a first urethane waterproofing solution and a second urethane waterproofing solution, and after applying the first urethane waterproofing solution, a second urethane waterproofing solution may be applied.

The primer is applied to prevent air bubbles between the structure and the waterproof layer 700 by reinforcing adhesion while preventing the floating phenomenon of the coating waterproofing solution 700 to be described later. Preferably, a urethane-based primer may be used. The urethane primer can be used without limitation as long as it has the same effect as described above, but preferably a one-component urethane primer can be used, and it is preferable that the urethane primer is applied to a thickness of less than 1.5mm when applied once. When the urethane primer is applied to a thickness of more than 1.5 mm, the initial crystals of cracks such as bubbles, lifts, or pinholes may be generated. In addition, the urethane primer may be applied by repeating 1 to 5 times.

As described above, the coating waterproofing solution may be divided into a first urethane waterproofing solution and a second urethane waterproofing solution.

The first urethane waterproofing solution is a part constituting the main body of the coating waterproofing layer 700, and is preferably applied to have a thickness of 3 to 4 mm. At this time, if the first urethane waterproofing liquid layer has a thickness of less than 3 mm, the waterproofing effect may be degraded and the elasticity may be weakened, resulting in poor durability, and if the thickness exceeds 4 mm, internal hardening may not be completed, resulting in a defect in the coating film.

The second urethane waterproofing solution is applied on the top of the first urethane waterproofing solution to fill gaps in the floor or wall that cannot be filled in the first urethane waterproofing solution, and plays a role of making the surface smooth, which is lower than that of the first urethane waterproofing solution. It can have viscosity. In addition, in the case of the second urethane waterproofing solution, it may be applied to have a thickness of 0.5 to 2 mm. When the second urethane waterproofing solution layer has a thickness of less than 0.5mm, it is difficult to smoothly arrange the surface of the first urethane waterproofing solution, and when it has a thickness exceeding 2mm, only the thickness of the coating film may be thickened without further increasing the effect.

As the urethane waterproofing solution used as described above, it is possible to use a one-component urethane waterproofing solution, but for convenience of construction and control of properties, a two-component urethane waterproofing solution composed of a main material and a hardener may be used. At this time, since the first urethane waterproofing solution must be applied with a thick thickness, it is preferably mixed in a ratio of 10 to 50 parts by weight of a curing agent and 1 to 5 parts by weight of a diluent relative to 100 parts by weight of urethane.

The curing agent is a substance added to promote curing in which the liquid loses fluidity due to chemical changes such as hydration, oxidation, polymerization, or physical change such as drying, thereby improving stiffness or strength, and the curing agent contains less than 10 parts by weight. If so, the tensile strength, tear strength, and hardness may not be sufficient, and if it is added in excess of 50 parts by weight, hardening proceeds a lot, resulting in poor elasticity and elongation, and construction may be difficult due to poor spreadability.

The diluent is also called thinner, and is a mixed solvent used to lower the viscosity because it takes a lot of energy when painting and is difficult to spread on the surface when paint, adhesive, coating, etc. have too high viscosity. At this time, when the diluent is included in an amount of less than 1 part by weight, the viscosity of the first urethane waterproofing agent may be increased and it may be difficult to apply, and when it exceeds 5 parts by weight, it is difficult to form a coating layer having a desired thickness as the viscosity decreases.

In the case of the second urethane waterproofing solution, since it is preferable to have a lower viscosity than the first urethane waterproofing solution, it is preferable to include 10 to 50 parts by weight of a curing agent and 5 to 30 parts by weight of a diluent relative to 100 parts by weight of urethane. If the second urethane waterproofing solution contains less than 5 parts by weight of the diluent, the viscosity may increase and it may not be possible to fill the gaps on the wall or the floor, and if it exceeds 30 parts by weight, the viscosity is lowered and thus tear strength, tensile strength, and The elongation can be lowered.

It is preferable that the waterproof coating layer 700 is also applied to the upper part of the waterproof corner layer (see FIG. 3). In the case where the corner waterproofing layer and the coating waterproofing layer 700 are formed as described above, even if water is supplied, the coating waterproofing layer 700 prevents the penetration of water, and at the same time, the corner waterproofing layer, especially the high-sounding waterproofing layer ( 400) is formed on the inclined surface so that the water flows through the bottom surface rather than the corner. In addition, even when water flows through the corner, the water is prevented from penetrating by the waterproof mortar 500 and the high-sound waterproof layer 400 located at the corner, as well as the concrete layer on the bottom surface and the interior of the perforation. Since it is waterproofed once more by the permeable waterproofing agent 300, it can be discharged to the outside by riding the finishing layer 600 positioned above the permeable waterproofing layer. In other words, unlike the existing single waterproofing of the present invention, a multi-layered waterproofing layer is formed, and thus, unlike the existing coating waterproofing method, a high waterproofing effect can be expected.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Various modifications are possible by those skilled in the art of course, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

100: structure
200: perforation
300: permeable waterproof liquid layer
400: high sound waterproof layer
500: waterproof mortar layer
600: finishing layer
700: waterproof coating layer

Claims (2)

(a) a surface treatment step of grinding the concrete floor or wall surface to obtain a desired level of roughness;
(b) a corner processing step of processing the edge portion where the wall and the floor meet after the surface treatment step;
(c) Gossori waterproofing step of mixing and applying a cement and a waterproofing solution to the processed corner portion;
(d) a mortar waterproofing step of applying a waterproof mortar on the top of the high-sound waterproof layer;
(e) a finishing step of finishing the bottom surface and the wall surface; And
(f) In the waterproofing method of the structure comprising the coating film waterproofing step of applying a coating film waterproofing material to the finished surface,
The step (a),
Physically treating the floor or wall by repeating 2 to 10 times using a metal grinder equipped with a diamond wheel;
A chemical treatment step of etching the physically treated floor or wall surface using an acid or a base; And
After the chemical treatment step, a step of waterproofing and reinforcing the floor or wall by infiltrating a permeable waterproofing agent into the floor or wall,
The step (b),
Drilling a corner portion where the wall and the floor meet after the surface treatment to a predetermined depth;
Injecting a permeable waterproofing solution into the perforation; And
Including the step of pressing the perforated portion to penetrate the permeable waterproofing liquid into the concrete of the wall and bottom,
The perforation is performed to have an interval of 2 to 50 cm with a depth of 1 to 100 mm,
The pressurization is,
Sealing the outer surface of the perforated portion with a pressure maintaining means;
Injecting the permeable waterproofing solution by pressurizing for 1 to 20 minutes to the sealed perforation; And
It is carried out including the step of recovering the excess permeable waterproofing liquid present in the perforated portion and removing the pressure maintaining means,
The step (c),
Preparing a waterproof cement by mixing a mixed waterproofing solution with cement;
Inserting an injector having a diameter smaller than that of the perforated portion into the perforated portion;
Injecting the waterproof cement into the perforation using the inserted injector;
Pressing the injected waterproof cement; And
After removing the injector, comprising the step of further applying and curing the waterproof cement to form a high-sound waterproof layer,
The waterproof cement is prepared by mixing 20 to 100 parts by weight of water and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement,
The injector has a size of 5 to 20 mm in diameter, 1 to 10 perforated parts having a size of 1 to 10 mm are installed on the tip and side portions at regular intervals,
In the step of applying and curing the waterproof cement additionally, the waterproof cement is additionally applied so that the upper surface has an angle of 30 to 60° with respect to the floor surface at the corners of the wall surface and the floor surface, and the cross section forms a triangle. Is the step of applying,
The step (d),
Preparing a waterproof mortar by mixing 50 to 150 parts by weight of sand, 50 to 150 parts by weight of water, and 5 to 20 parts by weight of a waterproofing solution relative to 100 parts by weight of cement;
Including the step of applying and curing the waterproof mortar to a thickness of 1 ~ 10mm on the upper portion of the waterproof layer,
The step (e) includes a step of mixing cement or mortar and water on the floor or wall and then applying,
The bottom surface finishing step,
Applying a mortar consisting of 50 to 150 parts by weight of sand and 50 to 150 parts by weight of water relative to 100 parts by weight of cement on the top of the bottom surface;
Molding the applied mortar to have an angle of 1 to 5° based on the drain hole;
Drying the mortar; And
Including the step of filling the cracks generated on the surface of the dried mortar,
The wall surface finishing step,
Applying a mortar with a thickness of 1 to 5 mm including 50 to 150 parts by weight of sand and 10 to 50 parts by weight of water relative to 100 parts by weight of cement on the wall; And
Including the step of spraying 1 ~ 3kg water per 1m2 on the applied mortar and arranging the surface,
The step (f),
Applying a primer to the wall or floor; And
Including the step of applying a coating film waterproofing solution on the primer,
The coating waterproofing solution is composed of a first urethane waterproofing solution and a second urethane waterproofing solution, and a second urethane waterproofing solution is applied after the first urethane waterproofing solution is applied. delete

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