JP2015194078A - End treatment structure for waterproof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a construction period by greatly reducing field work and securing stable quality.SOLUTION: A primer layer 41 and an adhesive layer 43 are formed on a top surface of eaves 80 and a top surface of an upright wall. Waterproof sheets 10A and 10B integrally pre-formed with a draining part 66 are stuck, and a draining part 17 is positioned on an apical surface or a side surface.

Description

  The present invention relates to an end treatment structure for a waterproof sheet used in a waterproofing method for a floor surface of a building rooftop or a veranda.

1. When waterproofing the floor (rooftop), etc. on the top floor of a building, methods such as asphalt waterproofing, sheet waterproofing, and urethane coating waterproofing have been taken, and have the following advantages and disadvantages.

(1) Asphalt waterproofing This method is a method of forming a waterproof layer while alternately layering two or three asphalt roofings (a material in which asphalt is infiltrated into a sheet-like base material) with heat melting. It is a construction method with a track record. Since the waterproof material is asphalt, it has high water-tightness, and there is an advantage that various specifications can be accommodated by adjusting the type of asphalt roofing and the number of stacked sheets. In addition, the accuracy varies depending on the skill level of the operator, but the accuracy can be averaged by overlapping.
On the other hand, since this method uses asphalt, the waterproof layer is sensitive to changes in temperature, and it is easy to sag in the summer, to harden and break in the winter, and there are also disadvantages that the periphery and the like do not fit well. In addition, since high-temperature asphalt is used during construction, it is necessary to work while ensuring the safety of workers, and there is also a problem that smoke and odor adversely affect the neighborhood.

(2) Waterproofing of rubber sheet This method is a method of forming a waterproof layer by bonding together waterproof sheets made of rubber materials having a thickness of about 1 to 2 mm with an adhesive. This construction method has the advantage that the quality is stable because the waterproof sheet is molded at the factory, and when using a rubber sheet, it has excellent extensibility and follows even if the ground is cracked. I was able to.
On the other hand, in this method, there is a disadvantage that it is easy to peel off if there is construction failure in the jointed part of the waterproof sheet, and in the case of using a rubber sheet, in addition, there are convex parts on the ground or due to sharp flying objects There were also disadvantages that were easily damaged.

(3) Urethane coating waterproofing This construction method is a construction method in which a two-component liquid material is mixed and stirred at the time of construction, applied to the base by spraying, etc., and solidified by reaction to form a waterproof layer. is there.
Since liquid material is applied, it has the advantage of being easy to fit and easy to install even in complicated places such as narrow spaces and rooftops with many equipment foundations. There was an advantage that can be prevented. Moreover, since the waterproof performance can be improved by applying it repeatedly, there is an advantage that the waterproof layer can be repaired at low cost because it is only necessary to apply it at the time of repair. Furthermore, it is possible to meet specifications for various applications such as increasing friction resistance and impact resistance by selecting a liquid material, and for example, it can be used on a sports ground.
On the other hand, since a liquid material is applied, it is easy to spread horizontally, and if the ground surface is uneven, it cannot be applied to a uniform thickness, and it is difficult to ensure the film thickness. In addition, since the two liquids are agitated and mixed on site, there is also a disadvantage that quality is varied such as uncured if the agitation and mixing are insufficient.

(4) Vinyl chloride sheet floor This method is a method of attaching a vinyl chloride waterproof sheet with urethane and epoxy resin adhesives for the purpose of simple waterproofing, design and slip prevention of open corridors, stairs and verandas of apartment buildings. It is.
At that time, a waterproof sheet such as vinyl chloride is applied from the top of the groove and the rising portion where the waterproof sheet is not applied, up to a range of 10 cm of urethane waterproof material. The waterproof sheet can be applied immediately after applying the adhesive, and on the attached sheet, it is possible to walk without waiting for the adhesive to harden, so there is a period of time when it is closed even in shared areas such as open corridors and stairs. Short and there are few obstacles to the lives of residents.
However, as with the vinyl chloride sheet waterproofing material, due to deterioration over time, the plasticizer in the sheet becomes hard due to volatilization and shrinkage occurs. As a result, the end portion floats and the joint portion seal is broken. In addition, the surface layer also fades and the design properties are reduced. For this reason, it was necessary to remove the existing waterproof sheet flooring together with the adhesive and reconstruct it.

  Even if any one of the above methods (1) to (4) is adopted, it is necessary to provide anti-scattering curing around the site, and at least a curing curing period of one day is required at each stage. In some cases, it took weeks, and the construction period was prolonged.

2. A water retention pad used for rooftop greening has also been proposed in which foamed urethane is used and the joints are closed with tape (Patent Document 1).
Furthermore, a urethane mat is proposed in which a small-sized urethane sheet B is pasted on the center side of the butyl rubber sheet A, and a woven or non-woven tape is pasted around it. A construction method for waterproofing has been proposed (Patent Document 2).

Moreover, in order to fix to the concrete floor so that the edge part of a waterproof sheet may not be turned up, the anchor was hit to the concrete frame from the upper surface of the waterproof sheet. That is, the anchor penetrated the waterproof sheet and was driven into the concrete frame. In this case, the anchor was made of steel.
In these cases, an appropriate treatment method that takes into account secular change has not been established for the treatment of the end portions of the waterproof sheet and the waterproof film.

JP 2002-84889 A Japanese Patent Laid-Open No. 9-131834

  The object of the present invention is to solve the problems of conventional construction methods using conventional asphalt waterproofing, sheet waterproofing, urethane coating waterproofing, PVC sheet flooring, etc., shortening the curing period on site, and uniform An object of the present invention is to provide an end treatment structure for a waterproof sheet capable of forming a waterproof layer.

  In order to achieve the above object, the present invention firstly forms a primer layer and an adhesive layer on the upper surface of the ridge and the upper surface of the standing wall, and attaches a waterproof sheet integrally formed with a draining portion in advance, and attaches the draining portion to the tip surface. Alternatively, the second aspect is that the waterproof sheet is a molded waterproof sheet in which a top coat layer for protecting the waterproof base layer is laminated on the upper surface of the waterproof base layer. .

  The present invention uses a formwork to manufacture a waterproof sheet of one or more layers including a urethane-based waterproof material layer in a desired function in advance at a factory, and pastes it in the field. Solved the problem.

  The waterproof sheet used in the present invention is prepared in advance in a factory or the like using a concavo-convex molding frame, and a resin waterproof sheet is manufactured in accordance with the site, and can be prepared for ensuring stable quality because it is bonded on the site. In addition, there is an effect that the work on site such as curing for preventing scattering around the site and curing period to wait for hardening can be greatly reduced, but the present invention does not use a metal anchor for the end treatment of the waterproof sheet. Therefore, there is no risk of cracking in the concrete, and there is no follow-up, and there is no risk of deformation of the waterproof sheet, so that a long-term waterproof layer such as 20 to 30 years can be guaranteed.

It is a 1st example of the edge part treatment structure of the waterproof sheet of the present invention. It is the side view which stuck the waterproof sheet which formed the functional member integrally on the upper surface of a bag. It is an enlarged view of the E section of FIG. It is the side view which stuck the waterproof sheet which formed the functional member integrally on the upper surface of the standing wall in 2nd Example of the edge part processing structure of the waterproof sheet of this invention. It is an enlarged view of the F section of FIG. 5A to 5C are longitudinal sectional views of a waterproof sheet used for carrying out the present invention.

The waterproofing method used in the present invention is as follows.
(1) A “waterproof sheet” having the following configurations (1-1) and (1-2) is manufactured in advance outside the construction site.
(1-1) “First waterproof layer” made of a general waterproof resin material of a urethane resin type having a general waterproof performance on the flat surface of the molding frame
"Second waterproof layer" made of a urethane resin-based high-quality waterproof resin material having higher waterproof performance than the "first waterproof layer"
A “waterproof sheet” in which is laminated is molded.
(1-2) The peripheral part of the “first waterproof layer” and the peripheral part of the “second waterproof layer” were substantially matched.
(2) Apply a primer to the floor of the construction site, and then form an “adhesive layer”.
(3) Subsequently, the “waterproof sheet” is spread on the “adhesive layer” to form the “waterproof layer” on the floor surface.

Further, it is a floor surface waterproofing method for forming a waterproof layer as follows.
(1) A “waterproof sheet” having the following configurations (1-1) and (1-2) is manufactured in advance outside the construction site.
(1-1) On the flat surface of the mold,
・ "Waterproof base layer" made of urethane resin waterproof resin material
A “waterproof sheet” in which a “topcoat layer” for protecting the “waterproof base layer” is laminated on the upper surface of the “waterproof base layer” is molded.
(1-2) The peripheral part of the “waterproof base layer” and the peripheral part of the “topcoat layer” were substantially matched.
(2) Apply a primer to the floor of the construction site, and then form an “adhesive layer”.
(3) Subsequently, the “waterproof sheet” is spread on the “adhesive layer” with the topcoat layer facing up to form the “waterproof layer” on the floor surface.

Moreover, it is the waterproofing method of the floor surface comprised as follows.
(1) “Waterproof base layer” • “First waterproof layer” made of urethane resin-based general waterproof resin material
-It is composed of two layers of "second waterproof layer" made of a urethane resin-based high quality waterproof resin material having higher waterproof performance than the "first waterproof layer".
(2) The first waterproof layer, the second waterproof layer, and the top coat layer are laminated in this order.

Another invention is a waterproof sheet used when forming a waterproof layer by laying on a floor surface, and is a waterproof sheet characterized by being configured in advance as follows outside a waterproof construction site.
(1) A “waterproof base layer” made of a urethane resin waterproof resin material is formed on the floor surface side.
(2) A top coat layer for protecting the waterproof base layer is formed on the waterproof base layer.
(3) The peripheral part of the said waterproof base layer and the peripheral part of the topcoat layer were made to correspond.

Another invention is a waterproof sheet that is used when forming a waterproof layer on a floor surface, and is a waterproof sheet that is configured in advance as follows, except at a waterproof construction site. .
(1) On the floor surface side, a first waterproof layer made of a general waterproof resin material of general urethane resin type with waterproof performance is formed.
(2) On the first waterproof layer, a second waterproof layer made of a urethane resin-based high quality waterproof resin material having higher waterproof performance than the first waterproof layer is formed.
(3) The peripheral part of the first waterproof layer and the peripheral part of the second waterproof layer are substantially matched.

  Furthermore, in the above, the waterproof sheet is characterized in that a functional member protruding on the front surface side or the back surface side of the waterproof sheet is formed integrally with the first waterproof layer and / or the second waterproof layer.

  The “floor surface” in the above description is not limited to the roof surface, and also refers to a horizontal surface of a veranda, a horizontal surface of a walkway, or an indoor floor surface as long as the same waterproof surface is required. Further, as long as the same waterproof function is required, the present invention can be applied not only to a horizontal plane but also to an inclined plane, a vertical plane, or a stepped plane.

  The “topcoat layer” is a protective layer for prolonging the waterproof performance of the waterproof layer, and has various functions such as ultraviolet ray prevention and shock absorption. In particular, when a urethane-based waterproof resin material is used, the role of the top coat layer is necessary because it is important to maintain the waterproof performance by preventing deterioration due to ultraviolet rays.

  The “adhesive layer” is preferably a urethane-based material. The primer in the above is also preferably urethane.

  The “high-quality urethane waterproof layer” includes a urea resin-based material having waterproof performance.

  Further, the above-mentioned “general waterproof resin material” is a resin material having a conventional waterproof performance, and it is sufficient if the used portion has a required waterproof performance.

  Further, the “functional member” in the above is necessary because it is a member formed integrally with the waterproof layer around the waterproof layer conventionally formed in the field, or a waterproof sheet previously formed into a sheet shape. This is a member that is provided at the end of the sheet to fix the sheet to the concrete surface and to serve as a drainer.

  In addition, when the waterproof sheet is composed of the first waterproof layer and the second waterproof layer, the “functional member” in the above is preferably formed of two layers of both waterproof layers, It can also be formed with only one waterproof layer.

1. The waterproof sheet 10 used in the end treatment structure of the waterproof sheet of the present invention has a structure in which a plurality of layers are formed over the entire surface (FIG. 5).

(1) The topcoat layer 30 is formed in order from the front surface 11 to the back surface 12 with two urethane waterproof layers.
High quality urethane waterproof layer 31
Urethane waterproof layer 32 for general use
It is desirable to use the waterproof sheet 10A having a configuration including three layers (FIG. 3A). Here, the four edges of the waterproof sheet 10A are formed so that the edge 30a of the topcoat layer 30, the edge 31a of the high-quality urethane waterproof layer 31, and the edge 32a of the general urethane waterproof layer 32 are substantially aligned. Is done. In this case, the general urethane waterproof layer 32 is omitted,
Top coat layer 30
High quality urethane waterproof layer 31
The waterproof sheet 10A may be configured as a structure including the two layers (FIG. 3B).

(2) Depending on the waterproof performance required, the top coat layer 30 may be omitted,
High quality urethane waterproof layer 31
Urethane waterproof layer 32 for general use
It can also be set as the waterproof sheet 10B made into the structure containing these two layers (FIG.3 (c)). Here, the four edges of the waterproof sheet 10B are formed so that the end edge 31a of the high-quality urethane waterproof layer 31 and the end edge 32a of the general urethane waterproof layer 32 are substantially aligned. In this case, the topcoat layer 47 is formed on site or the topcoat layer 47 is omitted.

(3) The top coat layer 30 in the above is formed to prevent the urethane waterproof layer from being exposed to ultraviolet rays, or to add various colors and patterns (planar patterns, uneven patterns). The high-quality urethane waterproof layer 31 is a layer having a high waterproof performance that does not contain an increasing component other than the urethane waterproof resin. Further, the general urethane waterproof layer 32 is a layer for securing the thickness of the waterproof layer, although various increasing components are added to the urethane waterproof resin and the prevention performance is inferior.

  A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, a waterproof sheet in which a draining portion (functional member) 17 is integrally formed in advance is applied to an upper surface 80a of the ridge 80, an upper surface 81a of an independent standing wall 81 such as a ridge.

A ridge 80 protrudes laterally from the vertical surface 8 of the concrete skeleton, and the ridge 80 has an upper surface 80a and a tip end surface 80b that is substantially vertical from the corner portion 80c downward. The waterproof sheet 10 </ b> A (10 </ b> B) has, in advance, a draining portion 17, “a sheet pressing portion 63 and a draining cover portion 66 that press the corner 80 c and the leading end surface 80 b project downward” on one tip side. (FIG. 2). The tip 66 a of the drain cover portion 66 is positioned below the tip 63 a of the sheet pressing portion 63.

  The necessary primer layer 41 and adhesive layer 43 are similarly formed on the upper surface 80a and the distal end surface 80b of the ridge 80, the waterproof sheet 10A (10B) is pasted on the upper surface 80a, and the draining portion 17 is positioned on the distal end surface 80b (see FIG. 1) The vertical surface 8 is subjected to another waterproof sheet 10A (10B) or a conventional waterproof treatment. The work of forming the edge treatment and draining of the waterproof sheet 10A (10B) can be omitted, and the work efficiency can be greatly improved. The present invention can also be applied to a veranda having a structure similar to that of the eaves 80 (not shown).

A second embodiment of the present invention will be described with reference to FIGS.
The standing wall 81 made of concrete has a corner 81 upper surface 81a above the side surfaces (substantially vertical) 81b, 81b. The waterproof sheet 10 </ b> A (10 </ b> B) has draining portions 17, 17 in advance on both tip sides, “the sheet pressing portion 63 and the draining cover portion 66 pressing the corner 80 c and the tip surface 80 b protrude downward”. The structure is formed at a factory or the like (FIG. 18B). Similarly, the tip 66a of the drain cover portion 66 is located below the tip 63a of the sheet pressing portion 63.

  The necessary primer layer 41 and adhesive layer 43 are similarly formed on the upper surface 81a and the side surface 81b of the standing wall 81, the waterproof sheet 10A (10B) is pasted on the upper surface 81a, and the draining portion 17 is positioned on the side surface 81b (FIG. 17). (A)). Another waterproof sheet 10A (10B) or a conventional waterproof treatment can be applied to the side surface 81b.

8 Vertical surface 9 Horizontal surface 10 Waterproof sheet 10A Waterproof sheet (with top coat layer)
10B waterproof sheet (no topcoat layer)
DESCRIPTION OF SYMBOLS 11 Surface of waterproof sheet 12 Bottom surface of waterproof sheet 13 Communication hole of waterproof sheet 17 Drain part (functional member) of waterproof sheet
30 Topcoat layer 30a of waterproof sheet Edge 31 of topcoat layer High quality urethane waterproof layer of waterproof sheet (first waterproof layer)
31a Edge of high quality urethane waterproof layer 32 Urethane waterproof layer for general use of waterproof sheet (second waterproof layer)
32a Edge of general urethane waterproof layer 41 Primer layer 43 Adhesive layer 45 In-situ waterproof layer 47 Top coat layer 63 Resin fixture sheet retainer 66 Resin fixture drainer cover 80 庇 81 Standing wall

Claims (2)

  The end of the waterproof sheet is characterized in that a primer layer and an adhesive layer are formed on the upper surface of the ridge and the upper surface of the standing wall, a waterproof sheet in which the draining portion is integrally formed is pasted, and the draining portion is positioned on the tip surface or the side surface. Department processing structure. 2. The end treatment structure for a waterproof sheet according to claim 1, wherein the waterproof sheet is a molded waterproof sheet in which a top coat layer for protecting the waterproof base layer is laminated on the upper surface of the waterproof base layer.

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