KR20070006001A - Method for constructing waterproof sheet using dual waterproof sheet and waterproof structure - Google Patents

Abstract

A waterproof constructing method using dual waterproof sheets and a waterproof structure are provided to reduce material cost by securing the waterproof structure having excellent tension resistive force and joining the joint part of first waterproof sheets by a butyl rubber adhesive sheet. A waterproof structure using dual waterproof sheets(31a,31b,31c,31d) comprises a first waterproof layer contacted with plural first waterproof sheets(11a,11b,11c,11d); a jointing adhesive sheet(21) attached at the contacted jointed part of the first waterproof sheets to hold airtightness; a second waterproof layer hinge-connected with the second waterproof sheets attached with a surface reinforcing material on the improved asphalt layer surface and closely contacted by heat-welded on the first waterproof layer; and a push layer formed at the upper surface of the second waterproof layer.

Description

Method for Constructing Waterproof Sheet Using Dual Waterproof Sheet and Waterproof Structure}

1 is a construction view showing a waterproof construction method using a double waterproof sheet according to an embodiment of the present invention,

Figure 2 is a perspective view of the primary waterproof sheet used in the waterproof construction of Figure 1,

Figure 3 is a perspective view of the adhesive sheet for the joint used in the joint between the primary waterproof sheet of Figure 1,

4 is a perspective view of a secondary waterproof sheet used in the non-exposed waterproof construction of Figure 1,

5 is a perspective view of a secondary waterproof sheet used in the waterproof construction for exposure of Figure 1,

6 is a cross-sectional view taken along line X-X of FIG. 1;

7 is a cross-sectional view showing a waterproof structure of the corner portion waterproof construction according to the present invention,

8 is a perspective view showing a waterproof sheet for the wall.

* Explanation of Signs of Major Parts of Drawings *

One ; Butylavasheet 3,22; Release paper

5,23a, 23b; Butyllava layer 7; Composite film

10; Ground plane 100; Slab

11,11a-11d; Primary waterproof sheet 12; Release Film

13a, 13b, 33, 53a, 53b; Improved asphalt layer

14,24,34,54; Stiffeners 15,35; Sand layer

16a, 16b, 55a; Overlap region 21; Adhesive Sheet

31,31a-31d, 51; Secondary waterproof sheets 32,52; film

40; Wall 41; Press layer

55; Granule layer

The present invention relates to a waterproof construction method and a waterproof structure using a double waterproof sheet excellent in tensile strength, in particular, the first heat-sealed sheet and the second waterproof sheet impregnated with a polyester non-woven fabric on the surface of the fiberglass as a reinforcing material It is related with the waterproof construction method and waterproof structure using double waterproof sheet which can achieve the waterproof structure with excellent tensile strength as a whole by realizing the strong waterproof structure of the double asphalt waterproof layer using improved asphalt as a compound by combining them in a single way. .

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 cause of such defects, the external waterproofing of the roof / outer wall of the building uses a sheet waterproofing method using a waterproof sheet, a film waterproofing method using a film waterproofing material, and a composite film waterproofing method using a sheet and a film together. have.

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, the improved asphalt sheet waterproofing method is applied to underground waterproofing because the improved asphalt sheet is attached to the torch burner to secure watertightness by some training. The improved asphalt sheet waterproofing method is currently the most commonly used method is a method of unfolding and attaching the sheet to the concrete slab in the molten state by heating the asphalt attached to the back of the waterproof sheet with a propane gas burner (torch burner). .

The improved asphalt sheet has a non-woven reinforcing sheet is heat-sealed on one side with the same size as the asphalt sheet, and the other side of the asphalt sheet is attached with a release paper for preventing the adhesive sheet from being adhered to each other during production.

Such improved asphalt has a problem of poor installation workability and difficulty in securing watertightness of the joint part because the asphalt must be subjected to reinforcement work after the front attachment to the concrete slab of each asphalt sheet and the joint part treatment between the asphalt sheets.

Korean Patent Laid-Open Publication No. 1999-31067 discloses a composite waterproof structure that takes advantage of the asphalt sheet and the polyurethane coating waterproof material to enhance the watertightness of the joint portion and improves the adhesive strength by improving the asphalt sheet structure to compensate for the disadvantages. The construction method is disclosed.

The waterproof structure allows the end portions of the joints to be laid on the upper surface of the slab layer while maintaining a predetermined distance from each other. The waterproof structure is fused in a state in which a portion of the lower portion of the nonwoven fabric is planted on the upper surface of the asphalt sheet formed of asphalt. The base waterproof sheet is formed to protrude, and a polyurethane layer formed by applying a liquid polyurethane on the upper surface of the base waterproof sheet.

When using a liquid polyurethane to secure the watertightness between the sheet and the sheet there is a problem that the applied polyurethane takes a long time to cure the construction period is long.

In order to solve the problem of the use of the liquid coating film waterproofing agent, Korean Patent Laid-Open No. 2001-18221 proposes an improved waterproof sheet and a composite coating waterproofing method using the same.

This construction method is simple by the construction of the waterproof sheet joint by changing the structure of the various waterproof sheet used in the composite coating waterproof construction and can be carried out without reinforcing the joint joint, improving the workability (simpleness) of the construction work The present invention relates to an improved waterproof sheet capable of completely waterproofing a joint part and a composite coating waterproofing method using the same.

The improved waterproof sheet is a waterproof sheet main body having a waterproof function, a non-woven fabric heat-sealed in a state displaced from the waterproof sheet main body by a predetermined length to the side overlapped with the adjacent waterproof sheet and the joint construction, and the lower surface of the waterproof sheet main body Consists of a release material layer attached to the, the waterproof sheet body is characterized in that the exposed portion is formed in a portion that is jointed with the overlapping adjacent waterproof sheet.

On the other hand, asphalt waterproofing method (heating method) as one of the waterproof film coating, but if the three to four roofs overlap each other, the risk of permeability is less 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, because water is likely to occur during the curing of molten asphalt, there is a problem that the reliability of the waterproof can not be expected and there are not many skilled functional 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 is difficult to find the cause of the leakage of the joint and the end, it is difficult to find the cause of the leak, it is insulated from the sphere, the swelling and rupture occurs well, there is no breathability, degassing device is required, and as the organic material deterioration with age well 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% may cause a defect during adhesion, swelling phenomenon, the curing time is long and the flowability of the vertical portion is large.

In the coating film waterproofing method, Korean Patent Laid-Open Publication No. 2000-72868 uses a water-soluble acrylic one-component elastic coating waterproofing composition that forms a highly elastic, high-strength coating film. After forming, the coating film waterproofing method of forming a protective film on the waterproof film is disclosed.

However, this method has a disadvantage in that construction takes a long time to cure the adhesive layer and the coating waterproofing agent, resulting in poor workability, and low tensile strength (tensile strength x elongation rate) indicating waterproofing performance of the waterproofing layer.

Patent Publication No. 2000-72869 discloses an inorganic elastic composite coating film on a base sheet to improve breathability and moisture permeability, thereby improving durability, weather resistance, and workability (simpleness) of construction work. Since the construction is made by adhesive, a composite coating waterproof sheet and a composite coating waterproofing method using the same have been disclosed, which are not affected by the crack of the mother.

This construction method partially adheres the bottom surface of each of a plurality of waterproof sheets (polyethylene (PE) -based hard (soft) sheets), each of which has a nonwoven fabric attached to the surface thereof on the base surface, and at the same time, the periphery of the sheet And seal in a state where they overlap each other by a certain width, form an adhesive layer by applying a primer on the upper surface of the waterproof sheet, and then apply an inorganic elastic coating waterproofing agent at least once on the upper surface of the adhesive layer to form a waterproof layer, It consists of forming a protective film.

The composite coating waterproof construction method seals and bonds the joint portion of the waterproof sheet in a state where the periphery of the sheet overlaps with the periphery of the other sheet by a predetermined width so that about 10% of raw materials are additionally consumed, and a waterproof film may be formed. When the primer is applied to the upper surface of the waterproof sheet to form an adhesive layer and then the coating waterproofing agent is applied, there is a problem that the waiting time due to the curing of the primer and the coating waterproofing agent is long, and when the pressing method is applied, the waterproofing layer on the upper surface of the waterproofing film. There is a problem that it is necessary to form a protective film with a protective agent.

In addition, the waterproof layer according to the above-described composite coating waterproofing method has a problem that the bulge phenomenon of the waterproof layer due to the water vapor due to the lack of breathability and moisture permeability, the dry state of the ground, surface smoothness, surface strength, The adhesion of the coating film is greatly affected by the shape of the corner portion and the cleaning state of the base.

Since the construction method is basically made by wet construction, construction work according to wet construction is cumbersome and inconvenient, and a lot of construction costs are spent, as well as an extension of working time due to curing of the primer and waterproofing agent (winter). This is delayed and there is a disadvantage that the tensile strength is lowered. In addition, the coating film waterproofing method has a disadvantage in that the tensile strength (tensile strength x elongation rate) showing the waterproof performance of the waterproof layer is lower than the waterproof sheet.

On the contrary, in the conventional sheet waterproofing method, construction of the process of forming an adhesive layer with a primer to adhere the primary waterproof sheet, waste of raw materials due to overlapping of the sheet and the sheet, and difficulty of securing the watertightness of the joint part This exists.

Furthermore, in the case of adopting double sheet waterproofing, conventionally, the sheet using the polyester nonwoven fabric as the center reinforcing material was used. Therefore, when the primary lower sheet is heated with a torch and closely adhered to the base surface, the reinforcing material of the lower sheet is first heated. When the upper sheet is secondly attached, the deformation occurs, and the second sheet is subjected to heat once again, so that the damage and deformation of the primary sheet are largely affected, thereby affecting the watertightness, and the working time due to the primary and secondary heat fusion. This will be longer.

In addition, in order to solve this problem, when the lower sheet is combined with a material that is lower in the lower sheet and the upper sheet using a heat resistant material, separation of the lower and upper sheets occurs over time, resulting in poor watertightness. A problem arises.

Therefore, in the case of the conventional double sheet waterproof, there is an advantage that the tensile strength is increased, but there is a problem that the waterproof quality is not high compared to the high material ratio / construction ratio.

Therefore, the present invention has been made in view of the problems of the prior art, the purpose of which is a primary waterproof sheet and a secondary waterproof sheet impregnated on the surface of the primary waterproof sheet and polyester non-woven fabric using a fiberglass excellent in shape stability by heat as a center reinforcing material Double waterproofing to achieve the excellent waterproofing structure by implementing the strong waterproof structure of the double asphalt waterproof layer using improved asphalt as a compound while preventing the deformation of the primary waterproof sheet by unifying by combining it by the front heat fusion method. It is to provide a waterproof construction method and a waterproof structure using a sheet.

Another object of the present invention is to remove the material cost loss due to the overlap of the sheet by the watertight joint of the joint portion with the adhesive sheet for the joint after the sheet and the sheet when the first waterproof sheet is constructed and the construction is easy and fast to proceed In order to provide a waterproof construction method and a waterproof structure using a double waterproof sheet capable of shortening of air, it is possible to proceed to the subsequent process immediately after the construction of the first waterproof sheet.

Another object of the present invention is to apply the compound of the primary and secondary waterproof sheet to the improved asphalt which is both the same material, and at the same time contains the butylaba in which the adhesive sheet used in the joint of the primary waterproof sheet is easily compatible with the improved asphalt. According to the material to be selected to provide a waterproof construction method and waterproof structure using a double waterproof sheet forming a waterproof waterproof structure because the entire waterproof layer forms a single waterproof film as a single body does not occur separation over time. have.

Another object of the present invention is to attach the first waterproof sheet of asphalt by self-adhesive immediately without applying a separate adhesive or asphalt primer to the waterproof layer to prevent deformation of the waterproof layer due to the detachment of the sheet during construction after the waterproof construction is completed. Insulation method that naturally insulates after hardening of asphalt after a certain period of time removes the damage of the waterproof layer due to the change of the sphere (slab), and the occurrence of hardening time and material cost generated when using primers, etc. It is to provide a waterproof construction method using a double waterproof sheet that can be saved.

Another object of the present invention is a secondary waterproof sheet for the pressing layer by attaching a polyester non-woven fabric on top of the improved asphalt layer to install the pressing layer without using a separate waterproofing layer protection material can reduce the material cost, labor costs and time 2 The present invention provides a waterproof construction method using a waterproof sheet.

Still another object of the present invention is to construct the primary and secondary waterproof sheets using a standard product produced in a mass production in the factory, and the worker such as the adhesive layer construction using the primer, the joint construction of the sheet and sheet, the coating film coating application, etc. The waterproof construction method using the double waterproof sheet can eliminate the process factors that can cause defects in construction according to the proficiency of the system and improve the reliability of the waterproof structure, and can greatly reduce the material cost and labor costs by eliminating the use of standard products and the skilled process. To provide.

Another object of the present invention is to provide a waterproof construction method using a double waterproof sheet that can proceed all the processes continuously without waiting time to greatly reduce the material cost, labor costs and construction time.

In order to achieve the above object, the present invention is to form a first waterproof layer by abutting a plurality of primary waterproof sheet having a center reinforcing material is inserted in the middle of the improved asphalt layer in the middle of the improved asphalt layer, respectively, on the base surface; And attaching a joint adhesive sheet for fixing the watertightness to the butt joint portions of the plurality of primary waterproof sheets, and a plurality of secondary waterproof sheets having surface reinforcing materials attached to the surface of the improved asphalt layer. Forming a second waterproof layer by bringing each of the lower surfaces into close contact with each other by a predetermined width between adjacent sheets by forming a second waterproof layer on the first waterproof layer by forming a second waterproof layer, and forming a pressing layer on the upper surface of the second waterproof layer. It provides a non-exposed waterproof construction method using a double waterproof sheet, characterized in that consisting of steps.

According to another feature of the invention, the present invention is to form a first waterproofing layer by facing a plurality of primary waterproof sheet is inserted in the middle of the improved asphalt layer in the middle of the improved reinforcement layer, each of which is provided with a central reinforcing material having excellent shape stability And attaching a joint adhesive sheet to fix the water-tightness to the butt joint portions of the plurality of primary waterproof sheets, and inserting a central reinforcing material having excellent elongation and tensile strength in the middle of each improved asphalt layer. Forming a second waterproof layer by bringing the lower surface of each of the plurality of secondary waterproof sheets having a granule layer formed on the upper surface thereof to be in close contact with each other by a predetermined width between the adjacent sheets by front surface heat fusion on the first waterproof layer. Provides an exposed waterproof construction method using a double waterproof sheet, characterized in that consisting of.

Each of the plurality of primary waterproof sheets includes a central reinforcement made of a material having excellent shape stability by heat, a lower improved asphalt layer formed on a lower portion of the central reinforcement, and having a release film attached to a lower surface thereof, and an upper portion of the central reinforcement. The upper improved asphalt layer having a sand treatment portion and an overlap region on both sides thereof may be formed in the center portion.

In this case, the center reinforcement is preferably fiberglass.

In addition, each of the plurality of secondary waterproof sheets may be composed of an improved asphalt layer having a film attached to a lower surface of the non-exposed type, and a surface reinforcement formed of a material having an excellent elongation and tensile strength formed on the improved asphalt layer. have.

Each of the plurality of secondary waterproof sheets is exposed to the upper and lower improved asphalt layer, the central reinforcement is inserted in the middle of the upper and lower improved asphalt layer and excellent in elongation and tensile strength, and the upper surface of the upper improved asphalt layer It may be composed of a granule layer formed on.

The reinforcing material may be made of any one of a polyester nonwoven fabric, mesh-type fiberglass, and polypropylene woven fabric.

In addition, it is preferable that the butt spacing between the primary waterproof sheets does not exceed 10 mm.

Further, the adhesive sheet for the joint is composed of a top and bottom butyllava layer, a central reinforcing material inserted in the middle of the top and bottom butyllava layer and excellent in elongation and tensile strength, and a release paper formed on one surface of the bottom butyllava layer. It is preferable to be.

In this case, the reinforcing material is preferably made of any one of a polyester nonwoven fabric, mesh-like fiberglass, polyester woven fabric and polypropylene (PP) woven fabric.

According to the waterproof construction method of the present invention, in the case of the non-exposure type, the first waterproofing layer provided with a plurality of primary waterproof sheets, which are provided with a plurality of primary reinforcing sheets, which are inserted in the middle of the improved asphalt layer, each of which has excellent shape stability due to heat; An adhesive sheet for joints attached to each other to maintain watertightness at the butt joint portions of a plurality of primary waterproof sheets, and a plurality of secondary waterproof sheets each having a surface reinforcing material attached to the surface of the improved asphalt layer in an overlapping manner. A waterproof structure using a double waterproof sheet is provided, which comprises a second waterproof layer formed on the first waterproof layer by a front thermal fusion and a pressing layer formed on an upper surface of the second waterproof layer.

In addition, according to the waterproof construction method of the present invention, in the case of the exposure type, the first waterproof layer and a plurality of primary waterproof sheet which is provided with a center reinforcing material having excellent shape stability due to heat in the middle of the improved asphalt layer respectively on the base surface; The adhesive sheet for the joint attached to fix the water-tightness to the butt joint portions of the plurality of primary waterproof sheets, and the center reinforcement having excellent elongation and tensile strength are inserted in the middle of the improved asphalt layer, respectively, Provided is a waterproof structure using a double waterproof sheet, characterized in that each of the plurality of secondary waterproof sheet having a granule layer formed of a second waterproof layer formed in close contact by the front heat sealing on the first waterproof layer in an overlapping manner.

In the present invention, the plurality of primary waterproof sheets are constructed on the base surface by an insulating method, and the first and second waterproof layers are integrated by heat fusion to obtain an excellent waterproof structure composed of a double asphalt layer.

As described above, in the present invention, by combining the primary waterproof sheet using fiberglass as the reinforcing material and the secondary waterproof sheet impregnated with the polyester nonwoven fabric on the surface by the method of heat-sealing, double asphalt using the improved asphalt as a compound By implementing a strong waterproof structure of the waterproof layer, it is possible to obtain a waterproof structure with excellent tensile strength as a whole, and by the water-tight joint of the joint portion of the primary waterproof sheet with a butylaba adhesive sheet can be eliminated material cost loss due to the sheet overlap.

(Example)

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

Attached Figure 1 is a construction showing a waterproof construction method using a double waterproof sheet according to an embodiment of the present invention, Figure 2 is a perspective view of the primary waterproof sheet used in the waterproof construction of Figure 1, Figure 3 A perspective view of the adhesive sheet for the joint used in the joint between the primary waterproof sheet of Figure 1, Figure 4 is a perspective view of the secondary waterproof sheet used in the non-exposure waterproof construction of Figure 1.

Waterproof construction method using a double waterproof sheet according to a preferred embodiment of the present invention is divided into non-exposed waterproof construction method (aka pressing layer method) and exposed waterproof construction method.

First, referring to Figure 1 describes the non-exposed waterproof construction method using a double waterproof sheet according to an embodiment of the present invention.

During the waterproof construction, the first construction is carried out so that the smooth drainage is made on the ground surface of the concrete slab 100. That is, when the water gradient of the concrete base surface 10 is a roof-top waterproofing for walking, it is 1/100, and a non-pedestrian roofing waterproofing has a gradient of 1/50 or more so that rainwater and the like can be smoothly drained without stagnation. .

After that, the surface of the waterproof base surface 10 is cleaned and cleaned. In addition, it is preferable that the weak part, such as a drain, is reinforced by using the butyl-lava sheet | seat 1 which consists of a butyl-lava excellent in water tightness and adhesive force.

For example, as shown in FIG. 8, the butyllava sheet is a three-layer polyethylene film with a butyllava layer 5 of constant thickness, which has been proven to have excellent heat resistance, cold resistance, durability and watertightness. Butyl bar sheet with a release paper (3) attached to the bottom for ease of construction, and finished with a flexible non-directional composite film (7) excellent in elongation, sting, tensile heat, and aging resistance cross-bonded by 1).

The butylaba sheet is, for example, thickness: 1.2mm, width: 1000mm, length: 15m, top film: non-directional composite film, quality standards: KS M-2095, it is preferable to have the conditions other than ASTM D-882.

In this case, in the present invention, the primer for forming the adhesive layer is not applied to the base surface 10.

When the base surface treatment is made, attach the primary waterproof sheet 11 as shown in FIG. The primary waterproof sheet 11 adopts fiberglass as a central substrate, that is, the reinforcement 14 so that the reinforcement 14 is disposed between the upper and lower improved asphalt layers 13a and 13b, and the release film (below). 12) is attached, the surface of the upper improved asphalt layer (13a) is treated with a sand layer (15) made of fine sand (that is, talc) in order to increase the adhesion to the secondary waterproof sheet in a subsequent process, On the left and right sides, overlap regions 16a and 16b each having a width of about 50 mm are not formed in order to maximize bonding with the adhesive sheets for joints. Of course, a release film (not shown) is attached to the overlap regions 16a and 16b to prevent adhesion with other portions.

The primary waterproof sheet 11 having the above structure has excellent shape stability by adopting fiberglass as the reinforcing material 14 to prevent deformation of the primary waterproof layer by heat during torch work to construct the secondary waterproof sheet. In the construction of the primary waterproof sheet 11, the release film 12 attached to the lower portion is removed and the lower improved asphalt layer 13b of the primary waterproof sheet 11 is easily attached to the base surface 10. Thus, it is possible to solve the process inconvenience caused by the flow of the sheet during waterproof construction.

The primary waterproof sheet 11 is, for example, thickness: 1.5mm, width: 1m, length: 20m, compound: improved asphalt, center reinforcement: fiberglass, quality standards: to meet the KSF-4917 (compound) conditions Can be made.

The construction of the primary waterproof sheet 11 is first removed from the release film 12 and is attached to the base surface 10 to the maximum butt between each sheet and the sheet (11a-11d) to be within a maximum of 10mm.

Subsequently, the sheet-to-butt portion of the sheet, i.e., the overlap regions 16a and 16b of the adjacent sheet, is tightly attached by using the adhesive sheet 21 for the joint including butylava as shown in FIG.

The joint adhesive sheet 21 has strength as a central reinforcing material 24 between the upper and lower butyllava layers 23a and 23b using butyllava, which has proven excellent heat resistance, cold resistance, durability and watertightness. The polyester woven fabric is inserted, and the sheet is finished with one side double-sided release paper 22.

For example, the joint adhesive sheet 21 may have a thickness of 1.0 mm, a width of 50 mm, a length of 15 m, a center reinforcement: a polyester woven fabric, and a quality standard of KS M-2095.

The adhesive adhesive sheet 21 for the joint attached to the overlap regions 16a and 16b of the adjacent sheet may bring more excellent water tightness when the adhesive sheet 21 is pressed against the upper release paper 22 using a rubber roll or the like.

When the attachment of the adhesive sheet 21 for the joint is stopped, the upper release paper 22 is removed, and then the secondary waterproof sheet 31 as shown in FIG. 4 is water-welded by using a torch lamp. Attach to prevent flow. That is, as shown in FIG. 1, the secondary waterproof sheets 31a-31d are hermetically sealed in a state of overlapping with the periphery of other sheets sequentially from a low region to a high region of the base surface 10.

The secondary waterproof sheet 31 used for forming the secondary waterproof layer is, for example, an upper reinforcing material 34 on the top of the improved asphalt layer 33, for example by impregnating and attaching a polyester nonwoven fabric to the surface of fine sand (ie, , A sand layer 35 formed of talc) is formed, and has a structure in which an ultra-thin film 32 is applied to the bottom to facilitate torch work.

As described above, since the secondary waterproof sheet 31 has a structure in which the upper reinforcement member 34 made of polyester nonwoven fabric is formed on the top of the improved asphalt layer 33, the pressing layer can be directly installed without using a separate waterproof layer protective material. have.

The secondary waterproof sheet 31 is, for example, thickness: 3.5mm, width: 1m, length: 10m, compound: improved asphalt, upper reinforcement: polyester non-woven fabric, quality standard: KS F-4917 Class A first class conditions It can be manufactured to satisfy.

Thereafter, after the bottom waterproofing work is completed, it is attached to the wall 40 as shown in FIG. 7 using the butylaba sheet 1 shown in FIG. 8. Butylaba sheet (1) has excellent physical properties suitable for use as a sheet for the wall is attached from the top to the bottom of the wall 40, the overlap chip is, for example, 100mm and the upper end should be fixed with a fixing hardware.

Subsequently, after the installation process of the secondary waterproof sheet 31 is completed, the pressing layer 41 is directly installed without a separate process such as protection mortar or waterproof layer protective material construction for protecting the secondary waterproof layer. In this case, the pressing layer 41 is coated with cement mortar, for example, about 50-100 mm thick.

When the waterproof construction using the double waterproof sheet for the base surface as described above is completed, the cross-sectional structure of the joint portion of the primary waterproof sheet is obtained as shown in FIG.

As described above, in the waterproof construction method using the double waterproof sheet according to the present invention, the primary waterproof sheet 11, in which fiberglass is used as the center reinforcement 14, is attached to the base surface 10 by self-supporting primary. The watertight layer is formed, and in this case, the joints between the sheet and the sheet are butt-matched within 1 cm as much as possible, and the joint portion is tightly attached to the joint adhesive sheet 21 including butyllava.

Therefore, without applying a separate adhesive or asphalt primer to the base surface 10, the lower asphalt layer 13b of the primary waterproof sheet 11 made of asphalt is attached to the base surface and the primary waterproof during construction. It can prevent the deformation of the waterproof layer due to the separation of the sheet 11 and the process inconvenience caused by the flow of the sheet, and after a predetermined time after the waterproof construction is completed, it naturally insulates from the base surface 10 due to the hardening of the asphalt. This insulation method is a method in which the damage of the waterproof layer due to the change of a sphere (slab) is eliminated.

In addition, the primary waterproof sheet 11 adopts a fiberglass excellent in shape stability by heat as the reinforcing material 14, the secondary waterproof sheet 31 is the opposite of the lower surface bonded to the primary waterproof sheet 11 Since the reinforcing material 34 is disposed on the upper surface, to prevent deformation of the primary waterproof sheet 11 and the secondary waterproof sheet 31 due to heat during torch work in order to construct the secondary waterproof sheet 31 in a fusion method. can do.

In the waterproof construction method of the present invention, since the insulating method is applied, no adhesive layer is installed before the construction of the primary waterproof sheet 11, and the secondary waterproof sheet 31 is also made of polyester nonwoven fabric as an upper reinforcement on the upper surface. Therefore, the pressing layer 41 may be installed without using a protective mortar or a waterproof layer protective material for protecting a separate secondary waterproof layer.

As a result, according to the conventional formation of the adhesive layer and the coating waterproof layer, the problem of long waiting time (winter season) required for curing was eliminated. As a result, a waterproof construction method that does not require any waiting time for the subsequent process was developed.

Furthermore, in the present invention, the primary and secondary waterproof sheets 11 and 31 and the joint adhesive sheet 21 for the joint are all constructed using a standard product manufactured in a mass production at the factory, and the adhesive layer construction using the primer, the sheet and the sheet It improves the reliability of waterproof structure by eliminating process factors that may cause defects in construction, depending on the skill of the operator, such as joint construction, coating waterproofing coating application, etc., and greatly reduces material and labor costs by using standard products and eliminating skilled processes. have.

Meanwhile, in the present invention, the primary waterproof sheet 11 using the fiber glass as the center reinforcement material, the adhesive sheet 21 for joints including butylaba, and the secondary waterproof sheet 31 impregnated with a polyester nonwoven fabric are formed on the front surface. By combining in a single heat fusion method to realize a strong waterproof structure of the double asphalt waterproof layer using improved asphalt as a compound, it is possible to obtain a waterproof structure with excellent tensile strength as a whole.

That is, a test for evaluating the waterproof performance of the waterproof structure of the present invention was performed according to the KS F 4917 A test method is shown in Table 1 below. The most basic test method for evaluating the waterproof performance of the waterproof layer is the numerical value of the tensile strength multiplied by the tensile strength of the waterproof layer.

Product Name Tensile Strength (N / Cm) Elongation (%) Tensile (Tensile Strength × Elongation) KS Standard 80 15 2500 The present invention 102 53.42 5,4448.84 1st waterproof sheet 18.7 4.4 82.28 2nd waterproof sheet 84.5 46 3887 Adhesive Sheet 37 16.6 614.2

As can be seen from the test results, the performance of the primary waterproof sheet, the secondary waterproof sheet, and the adhesive sheet (butyl tape) is added, and it can be seen that the performance is improved by about 15% or more than the added value of each performance. This indicates that the respective materials work effectively to compensate for the weaknesses.

The present invention can be applied to an exposure method that does not form a pressing layer in addition to the non-exposed waterproofing method having a pressing layer on the upper surface.

Referring to Figure 1, the exposure waterproof construction method using the double waterproof sheet of the present invention is the same as the non-exposure waterproof construction method described above, many processes are constructed.

For example, the sale of the ground surface of the concrete slab 100, the surface treatment work on the base surface 10, the reinforcement construction for the weak part, the butt attachment of the primary waterproof sheet 11 is the non-exposure described above. Since it is made the same as the waterproof construction method, duplicate description thereof will be omitted.

As described above, the primary waterproof sheet 11 is attached to the base surface 10 with maximum abutment between each sheet and the sheets 11a-11d so as to be within 10 mm, and then a base for each 100 m ^{2 is} removed. Install between sheet. At this time, the lower base is installed under the seat.

Subsequently, the sheet-to-butt portion of the sheet, i.e., the overlap regions 16a and 16b of the adjacent sheet, is tightly adhered using the adhesive sheet 21 for joints including butylaba as shown in FIG. Presses the release paper 22 using a rubber roll or the like.

When the attachment of the adhesive sheet 21 for the joint is completed, the upper release paper 22 is removed, and the secondary waterproof sheet 51 for exposure, as shown in FIG. 5, is used for front fusion using a torch lamp. Attach them so that they do not interfere with the water flow. That is, as shown in FIG. 1, the secondary waterproof sheet 51 is sealed in a state overlapped by the overlap region 55a of another secondary waterproof sheet 51 sequentially installed from a low region to a high region of the base surface 10. Glue.

The secondary waterproof sheet 51 for exposure is inserted between the upper and lower improved asphalt layers 53a and 53b using a polyester nonwoven fabric as a center reinforcement 54, and an upper surface of the upper improved asphalt layer 53a. UV coated color granule layer 55 is formed, and the lower surface of the lower improved asphalt layer 53b is a commercialized product having a thin film 52 attached, the upper surface of the upper improved asphalt layer 53a In addition to the color granule layer 55, an overlap region 55a in which the color granule layer 55 is not formed is formed along one side to increase adhesion when the secondary waterproof sheet 51 is partially overlapped.

The secondary waterproof sheet 51 for exposure is, for example, thickness: 3.5mm, width: 1m, length: 10m, compound: improved asphalt, center reinforcement: polyester nonwoven fabric, quality standard: KS F-4917 Class A Products satisfying the first class conditions are preferred.

As described above, the secondary waterproof sheet 51 for exposure is overlapped and installed by the overlap region 55a in a sequential manner in the front fusion method, and then fusion is attached to the wall 40 using the secondary waterproof sheet 51 for exposure. The end of the sheet is fixed with a fixing iron and sealed.

7 is a cross-sectional view of a waterproof structure in which the exposed waterproof construction using the double waterproof sheet of the present invention is completed.

In general, leaks occur frequently due to the problems of waterproofing the asphalt for construction of the exposed asphalt, and in order to solve this problem, two-ply waterproofing was performed using another waterproof sheet. However, in the conventional two-ply sheet waterproofing, the cost and quality superior to any materials were not maximized due to the excessive cost, but the exposure method of the present invention naturally solved this problem.

In addition, in the above-described exposed waterproof construction method of the present invention, similar to the non-exposed waterproof construction, the tensile strength is excellent, and the material cost and labor cost can be greatly reduced with the shortening of the air.

In the above embodiment, for example, as the primary and secondary waterproof sheets 11, 31, and 51, the modified asphalt was used as the compound, but the present invention is not limited thereto, and other compounds having similar properties to those of the improved asphalt are described. It is also possible to use.

In addition, although the fiberglass and the polyester nonwoven fabric were used as the reinforcement materials in the primary and secondary waterproof sheets 11, 31, and 51, respectively, the present invention is not limited thereto, and the reinforcement materials for the primary waterproof sheet 11 are not limited thereto. ), If the shape stability by heat is excellent, other kinds of reinforcement may be used, and the reinforcement for the second waterproof sheet (31, 51) (34, 54), such as mesh-like fiberglass or PP woven fabric, elongation and tensile strength If good, other types of reinforcement may be used.

Further, the joint adhesive sheet 21 also has a reinforcing member 24 instead of a polyester nonwoven fabric, and other types of reinforcing members may be used as long as they have excellent elongation and tensile strength, such as mesh glass fibers, polyester woven fabrics, or polypropylene (PP) woven fabrics. It is also possible to use improved asphalt compounds or other lava, which have similar properties to butylaba.

As described above, in the present invention, by combining the primary waterproof sheet using fiberglass as the reinforcing material and the secondary waterproof sheet impregnated with the polyester nonwoven fabric on the surface by a single heat-sealing method, the double asphalt using the improved asphalt as a compound By implementing a strong waterproof structure of the waterproof layer, it is possible to obtain a waterproof structure with excellent tensile strength as a whole, and by the water-tight joint of the joint portion of the primary waterproof sheet with a butylaba adhesive sheet can be eliminated material cost loss due to the sheet overlap.

In addition, in the present invention, the compound of the primary and secondary waterproof sheets are both applied to the improved asphalt, which is the same material, and at the same time, the adhesive sheet used for the joint of the primary waterproof sheet contains butylaba which is easily compatible with the improved asphalt. As the material is selected, the entire waterproofing layer forms a single waterproofing film as a single unit, so that no separation occurs over time, thereby forming a highly reliable waterproofing structure.

In addition, in the present invention, the primary waterproof sheet is constructed by an insulation method without using a primer, and a pressing layer can be immediately installed without using a waterproofing layer protective material, thereby shortening the construction period due to the construction of the adhesive layer and the protective layer and curing 1 Construction of secondary and secondary waterproof sheets and pressing layers can be carried out continuously without waiting time, thereby reducing material costs, labor costs and time.

Furthermore, in the present invention, the primary and secondary waterproof sheets are constructed using standard products manufactured in a mass production at a factory, and the operator's proficiency such as an adhesive layer construction using a primer, a joint construction of a sheet and a sheet, and a coating waterproofing coating are applied. In this way, it is possible to improve the reliability of the waterproof structure by removing process factors that may cause defects in construction, and greatly reduce material and labor costs due to the use of standard products and the elimination of skilled processes.

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 (14)

Forming a first waterproofing layer by abutting a plurality of primary waterproof sheets in which a center reinforcing material having excellent shape stability due to heat is inserted in the middle of each improved asphalt layer; Attaching a joint adhesive sheet to fix the watertightness to the butt joint portions of the plurality of primary waterproof sheets; The bottom surface of each of the plurality of secondary waterproof sheets having surface reinforcing materials attached to the surface of the improved asphalt layer is bonded to the first waterproof layer by front surface heat bonding in a state of overlapping by a predetermined width between adjacent sheets to form a second waterproof layer. To do that, Waterproof construction method using a double waterproof sheet, characterized in that the step of forming a pressing layer on the upper surface of the second waterproof layer. Forming a first waterproofing layer by abutting a plurality of primary waterproof sheets in which a center reinforcing material having excellent shape stability due to heat is inserted in the middle of each improved asphalt layer; Attaching a joint adhesive sheet to fix the watertightness to the butt joint portions of the plurality of primary waterproof sheets; Each of the secondary reinforcement sheets having excellent elongation and tensile strength is inserted in the middle of each improved asphalt layer, and the lower surface of each of the plurality of secondary waterproof sheets having a granule layer formed on the upper surface thereof is overlapped by a predetermined width between adjacent sheets. The waterproof construction method using a double waterproof sheet, characterized in that the step of forming a second waterproof layer in close contact with the entire surface by heat-sealing on one waterproof layer. The method of claim 1 or 2, wherein each of the plurality of primary waterproof sheets Center reinforcement made of a material excellent in shape stability by heat, A lower improved asphalt layer formed on the bottom of the central reinforcement and having a release film attached to the lower surface thereof; Formed on top of the center reinforcement and waterproof construction method using a double waterproof sheet, characterized in that the central portion is formed with an upper improved asphalt layer having an overlap area on both sides and the sand treatment. 4. The waterproof construction method according to claim 3, wherein the central reinforcement material is fiber glass. The method of claim 1, wherein each of the plurality of secondary waterproof sheets Improved asphalt layer having a film attached to the lower surface, The waterproof construction method using a double waterproof sheet, characterized in that formed on top of the improved asphalt layer, consisting of a surface reinforcement made of a material excellent in elongation and tensile strength. The method of claim 2, wherein each of the plurality of secondary waterproof sheets Upper and lower improved asphalt layers, A central reinforcement inserted in the middle of the upper and lower improved asphalt layers and having excellent elongation and tensile strength; Waterproof construction method using a double waterproof sheet, characterized in that consisting of a granule layer formed on the upper surface of the upper improved asphalt layer. 7. The waterproof construction method according to claim 5 or 6, wherein the reinforcing member is made of any one of a polyester nonwoven fabric, a mesh-type fiberglass, and a polypropylene woven fabric. The waterproof construction method according to claim 1 or 2, wherein the butt spacing between the primary waterproof sheets does not exceed 10 mm. According to claim 1 or 2, wherein the adhesive sheet for the joint Upper and lower butilabar layers, A central reinforcing member inserted in the middle of the upper and lower butyllava layers and having excellent elongation and tensile strength; Waterproof construction method using a double waterproof sheet, characterized in that consisting of a release paper formed on one surface of the lower butylaba layer. 10. The method of claim 9, wherein the reinforcing material is made of any one of polyester nonwoven fabric, mesh-shaped fiberglass, polyester woven fabric, and polypropylene (PP) woven fabric. The method of claim 1 or 2, wherein the plurality of primary waterproof sheet is installed on the base surface by an insulating method, the first and second waterproof layer and the adhesive sheet for the joint is characterized in that it is integrated by heat fusion. Waterproof construction method using double waterproof sheet. A first waterproofing layer provided with a plurality of primary waterproof sheets facing each other with a central reinforcing material having excellent shape stability by heat in the middle of the improved asphalt layer; An adhesive sheet for joints attached to fix the watertightness to the butt joint portions of the plurality of primary waterproof sheets; A second waterproofing layer each of which a plurality of secondary waterproof sheets each having a surface reinforcing material attached to the surface of the improved asphalt layer is closely adhered to the first waterproofing layer by full surface heat welding; Waterproof structure using a double waterproof sheet, characterized in that consisting of a pressing layer formed on the upper surface of the second waterproof layer. A first waterproofing layer provided with a plurality of primary waterproof sheets facing each other with a central reinforcing material having excellent shape stability by heat in the middle of the improved asphalt layer; An adhesive sheet for joints attached to fix the watertightness to the butt joint portions of the plurality of primary waterproof sheets; Each of the plurality of secondary waterproof sheets each having a central reinforcement having excellent elongation and tensile strength in the middle of the improved asphalt layer and having a granule layer formed on the upper surface thereof is formed by being closely adhered to the first waterproof layer by front thermal fusion. Waterproof structure using a double waterproof sheet, characterized in that composed of two waterproof layers. 15. The method of claim 13 or 14, wherein the plurality of primary waterproof sheet is installed on the base surface by an insulating method, the first and second waterproof layer and the adhesive sheet for the joint is characterized in that it is integrated by heat fusion. Waterproof structure using double waterproof sheet.

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