JP2015187388A - End portion processing method for waterproof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure stable quality, and to shorten a construction period by sharply reducing a field work.SOLUTION: A lateral-direction anchor groove is formed on the vertical surface of a skeleton, and a primer layer and an adhesive layer are formed on the vertical surface, and a waterproof sheet composed of urethane resin-based urethane waterproof agent molded outside a construction site is attached up to the vicinity of the anchor groove on the vertical surface, and the upper end portion is positioned in the vicinity of the anchor groove, and the insertion protrusion of a resin fixture is inserted into the anchor groove, and the end portion of the waterproof sheet is pressed to the vertical surface side by the sheet pressing part of the resin fixture, or the waterproof sheet is loosened just under the anchor groove, and the end portion of the waterproof sheet is inserted into the anchor groove, and fixed with adhesive resin.

Description

  The present invention relates to a method for treating an end portion of a waterproof sheet used for waterproofing a floor surface of a building rooftop, a veranda, or the like.

  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.

(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.

(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.

  In order to fix the waterproof sheet to the concrete floor so that the end of the waterproof sheet does not turn up, an anchor was hit from the upper surface of the waterproof sheet to the concrete frame. That is, the anchor penetrated the waterproof sheet and was driven into the concrete frame. In this case, the anchor was made of steel.

  Since the asphalt waterproofing uses asphalt, the waterproof layer is sensitive to changes in temperature, and has a disadvantage that it is easy to drip in the summer, is hardened and breaks in the winter, and does not fit in the periphery. 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.

  The rubber sheet waterproofing has a disadvantage that it is easy to peel off if there is a construction failure in the jointed part of the waterproof sheet.In addition, in the case of using a rubber sheet, in addition, there are convex parts on the base or sharp flying objects There were also disadvantages that were easily damaged.

  Since the urethane coating waterproof is applied with a liquid material, 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.

  The vinyl chloride sheet floor is hardened by the plasticizer volatilization in the sheet and contracted due to aging deterioration like the vinyl chloride sheet waterproofing material. 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 of the above methods is adopted, scattering prevention curing is required around the site, and a curing curing period of at least one day is required at each stage, and the construction period may take 1 to 2 weeks. Was mimicking the lengthening of.

  Moreover, when using an anchor for the edge part process of a waterproof sheet, since the anchor which is a metal is press-fit in concrete, there also existed a possibility that a crack might arise in concrete.

  Further, since the metal anchor penetrates the resin waterproof sheet, there is no follow-up property, and there is a possibility that deformation occurs at a portion where the waterproof sheet penetrates.

  Therefore, a long-term waterproof layer such as 20 years and 30 years could not be guaranteed. In particular, it was prominent on the vertical and inclined surfaces.

  An object of the present invention is to manufacture a urethane-based waterproof sheet in advance in a factory and paste it on-site, so that the on-site curing period can be shortened and a uniform waterproof layer can be formed. To provide a method for treating the end of a waterproof sheet that does not require the use of a metal anchor for the end treatment of the sheet, so that there is no risk of cracking in the concrete, and there is no risk of deformation of the waterproof sheet. It is in.

  In order to achieve the above object, the present invention forms a lateral anchor groove on the vertical surface of the casing, forms a primer layer and an adhesive layer on the vertical surface, and extends to the vicinity of the anchor groove on the vertical surface outside the construction site. A waterproof sheet made of molded urethane resin-based urethane waterproofing agent is affixed, the upper end is positioned in the vicinity of the anchor groove, the insertion protrusion of the resin fixing tool is inserted into the anchor groove, and the waterproof sheet of the waterproofing sheet is inserted by the sheet pressing part of the resin fixing tool. The gist is to press the end to the vertical surface side, or the waterproof sheet is loosened just below the anchor groove, and the end of the waterproof sheet is inserted into the anchor groove and fixed with an adhesive resin. .

  As described above, the end treatment method of the waterproof sheet according to the present invention is such that one or a plurality of waterproof sheets including a urethane-based waterproof material layer are manufactured in advance at the factory, and are pasted in the field. Solves the problems of conventional methods using sheet waterproofing, urethane film waterproofing, PVC sheet flooring, etc., shortening the curing period in the field and forming a uniform waterproof layer, Since it is not necessary to use a metal anchor for the end treatment of the waterproof sheet, 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. The long-term waterproof layer can be guaranteed.

Fig.1 (a)-(c) is a longitudinal cross-sectional view of the fixed form waterproof sheet used for implementation of this invention. 2 (a) to 2 (e) are longitudinal sectional views showing the manufacturing process of the waterproof sheet used in the practice of the present invention. FIG. 3A is a cross-sectional view of a resin fixture, and FIGS. 3B and 3C are vertical cross-sectional views illustrating end processing of a waterproof sheet or the like on a vertical surface. (A)-(c) is a figure explaining the edge part process of a waterproof sheet, (d) is the waterproof sheet which shape | molded the functional member integrally. 5 (a) and 5 (b) are diagrams for explaining end processing of the waterproof sheet as another example, and FIG. 5 (c) is a cross-sectional view taken along the line CC in FIG. 5 (b).

  An embodiment as a premise of the edge processing method of the present invention will be described based on the drawings. In this embodiment, a waterproof sheet 10A in which a top coat layer 30 is formed in advance is used (FIGS. 1A and 1B).

1. Manufacture of waterproof sheet 10A

(1) The concave mold frame 20 for manufacturing the waterproof sheet 10A is arranged on the upper surface (flat surface) 22 of the plate-like base 21, and the crosspieces 25 and 25 are arranged in a frame shape to match the shape of the waterproof sheet 10A. A recess 23 is formed (FIG. 2A). The crosspiece 25 is formed in the rectangular or square cross-sectional shape according to the thickness of 10 A of waterproof sheets to manufacture.

(2) The bottom 24 of the recess 23 (the upper surface 22 of the base 21. Flat surface) is formed with a concavo-convex pattern in accordance with the surface 11 of the waterproof sheet 10A to be used. In this case, the concavo-convex pattern is a pattern with various conventional functions such as a pattern that can easily drain the accumulated water to the parapets 3 and 3 side, a pattern that is not slippery, a pattern that can exhibit water repellency, and a pattern that promotes evaporation. The pattern can be freely formed according to the purpose.

(3) Prepare the concave molds 20 and 20 having the plane L ₁ × L _{2 of} the recess 23 and the height (thickness) t of the recess 23 in advance at the factory, and _first apply a release agent in the recess 23. Thereafter, a top coat agent is applied in the recesses 23 to form a top coat layer 30 (FIG. 2B). In this state, the surface of the top coat layer 30 (surface facing upward) is formed with a substantially uniform film thickness. The top coat agent used here has a main function of preventing deterioration of the urethane waterproofing agent at the time of use, for example, a material having an ultraviolet ray prevention function (for example, “Cosmic Top UV” of Uplex Co., Ltd.). use. Further, the color and the planar pattern of the top coat layer 30 can be freely formed.

  Subsequently, when the topcoat layer 30 is dried, a high-quality urethane waterproofing agent 31 is sprayed on the surface of the topcoat layer 30 to form a high-quality urethane waterproofing layer 31 (FIG. 2C). The high-quality urethane waterproofing agent to be injected is a type in which a normal two-component base and a curing agent are collided and sprayed. As a high-quality urethane waterproofing agent, for example, “Cosmic RIM S200” from Uplex Co., Ltd. is used. A high-quality urethane waterproofing agent has a certain degree of fluidity, and thus is cured after spraying while maintaining a flat surface.

  Subsequently, when the high-quality urethane waterproof layer 31 is dried, a general-purpose urethane waterproof agent in which various kinds of increasing components are mixed into the urethane base material is poured into the surface side of the high-quality urethane waterproof layer 31, and the general-purpose urethane waterproof layer 32. Is formed (FIG. 2D). As a general-purpose urethane waterproofing agent, for example, “Cosmic PRO12” from Uplex Co., Ltd. is used. A general-purpose urethane waterproofing agent is cured while maintaining a flat surface by self-leveling.

(4) Subsequently, when the general urethane waterproof layer 32 is dried, it is removed from the mold and filled into the recesses 23 (the top coat layer 30, the high-quality urethane waterproof layer 31 and the general urethane waterproof layer 32). If the laminate is turned upside down, from the top surface 11 to the back surface 12 during use,
Topcoat layer 30 Thickness t ₁ = 0, 2-0.3 mm (unevenness)
High quality urethane waterproof layer 31 Thickness t ₂ = 1-3mm
Urethane waterproof layer 32 for general use Thickness t ₃ = 1-5mm
The urethane waterproof sheet 10A formed in three layers over the entire surface (the end edges 20a, 31a, and 32a of each layer are aligned) is configured (FIGS. 2 (e) and 1 (a)).

(5) Other examples of the waterproof sheet 10

  In the above description, the crosspiece 25 having a square or rectangular cross section is used. However, an inner side surface 25a of the crosspiece 25 is formed so that an opening spreads from the bottom 24 around the recess 23 using a crosspiece formed in a trapezoidal shape or the like. It is also possible to form an inclined surface (see FIG. 2A). Similarly, reverse slopes are possible.

  Moreover, in the above, it formed from the topcoat layer 30 located in the surface 11 (uppermost surface) at the time of use (FIG. 2), but in order from the bottom 24 in the recessed part 23, the general urethane waterproof layer 32 and the high quality urethane waterproof layer 31 and the topcoat layer 30 can be laminated and removed (not shown). In this case, when various uneven patterns are formed on the top coat layer 30, the pattern can also be formed on the surface of the top coat layer 30 that has not yet hardened by rolling or the like.

In the above, the waterproof sheet 10 has a rectangular shape with one side L ₁ × L ₂ (for example, L ₁ = 1 m, L ₂ = 2 m). Is optional (not shown).

  Moreover, in the above, the waterproof layer was formed from two layers of the high-quality urethane waterproof layer 31 and the general urethane waterproof layer 32, but the waterproof layer can be formed from any one layer (FIG. 1 (b)), In this case, it is desirable to form the high quality urethane waterproof layer 31.

  Moreover, in the said Example, although material was poured into the bottom 24 of the recessed part 23 and each layer 30, 31, 32, etc. were formed, the crosspieces 25, 25 were abbreviate | omitted and it was on a somewhat wide plane (it has only the bottom 24). The material is poured, the respective layers 30, 31, 32, etc. are laminated in the same manner, the peripheral portion (the position where the crosspieces 25, 25 will be formed) is cut, and the waterproof sheets 10A, 10B having a predetermined thickness are cut. Etc. can also be manufactured (not shown). In addition, if the peripheral part has gathered to some extent, a cutting | disconnection is also unnecessary.

  Fixing the waterproof sheet 10 to the vertical surface 8 (FIGS. 3 and 5)

(1) A resin fixture (made of epoxy resin, draining plate) 60 used in this embodiment has an insertion projection 62 entering the anchor groove 51 and a sheet pressing portion 63 at right angles to the insertion projection 62 on the base 61. Configure (FIG. 3A). The length of the resin fixture 60 in the depth direction in FIG. 3A corresponds to the shape of the anchor groove 51.
In addition, a drain cover portion 66 is formed in parallel with the sheet pressing portion 63 on the outer side of the sheet pressing portion 63 (the front end side of the base portion 61) (FIG. 3). The tip end 66 a of the draining cover portion 66 (the direction away from the base portion 61) is formed shorter than the tip end 63 a of the sheet pressing portion 63.

(2) A vertical anchor groove 51 is formed in the vertical surface 3c of the parapet 3 and the vertical surface 8 of the other casing (FIG. 3B). If necessary, a primer layer 41 and an adhesive layer 43 are applied in the vertical surface 8 and the anchor groove 51 (not shown). The anchor groove 51 is formed in a continuous or intermittent slit shape (joint shape), a parallel planar circle, or the like.
A waterproof sheet 10A is attached to the vertical surface 8 from below, and the upper end portion 10a is positioned in the vicinity of the anchor groove 51 (FIG. 3B).

(3) The insertion protrusion 62 of the resin fixture 60 is inserted into the anchor groove 51, and the end portion 10a of the waterproof sheet 10A is strongly pressed to the vertical surface 8 side by the sheet pressing portion 63 (FIG. 3C). In this state, the anchor groove 51 is filled with the epoxy resin 67 to fill the gap between the insertion protrusion 62 and the sheet pressing portion 63 of the resin fixture 60 and the anchor groove 51. In this state, the epoxy resin also turns into the communication hole 65 of the insertion protrusion 62 of the resin fixture 60, and is firmly fixed when the epoxy resin is cured.

(4) Although the waterproof sheet 10 </ b> A is used here, the waterproof sheet 10 </ b> B in which the top coat layer 30 is not formed can be applied. Moreover, it can also be applied to a conventional arbitrary waterproof sheet or a waterproof sheet formed in a sheet shape by spraying ultrafast curing urethane spray (polyurea type or the like) in the field (not shown).

  Also, the resin fixture (functional member) 60 can be molded in advance with the waterproof sheet 10 (10A, 10B) and carried into the site for use (FIGS. 4D and 12D). FIG. 17). In this case, for example, the edge 10a of the waterproof sheet 10 continues to the base 61 of the resin fixture 60, and the sheet pressing portion 63 and the edge 10a of the waterproof sheet 10 coincide (not shown).

(5) Further, in FIG. 9, the vertical surface 8 is assumed to be a wall on the outer wall side, but as described above, the vertical surface 8 can be similarly applied to the waterproof rising portion (FIG. 4). Further, the resin fixture 60 is formed with an inclined portion 66b on the base end side (base portion 61 side) of the draining cover portion 66, and the tip end 66a is formed longer than the tip end 63a of the sheet pressing portion 63 (FIG. 4C). )).

  In this case, a vertical surface 8 (vertical surface 3c) is formed following the veranda floor surface 4, and an anchor groove 51 is formed in the vertical surface 8 (FIG. 4A). Similarly to the above, after forming the primer layer 41 and the adhesive layer 43 on the veranda floor surface 4 and the vertical surface 8, the waterproof sheet 10A (or 10B) is pasted (FIG. 4B). It is formed up to just below the anchor groove 51 (FIG. 4B).

  Similarly to the case of FIG. 9, if necessary, after forming the primer layer 41 and the adhesive layer 43 in the anchor groove 51, the insertion protrusion 62 of the resin fixture 60 is inserted into the anchor groove 51, and the sheet pressing portion 63. Then, the end portion 10a of the waterproof sheet 10A is strongly pressed to the vertical surface 8 side (FIG. 4C).

  In this state, the anchor groove 51 is filled with the epoxy resin 67 to fill the gap between the insertion protrusion 62 and the sheet pressing portion 63 of the resin fixture 60 and the anchor groove 51. In this state, the epoxy resin also turns into the communication hole 65 of the insertion protrusion 62 of the resin fixture 60, and is firmly fixed when the epoxy resin is cured.

  In this case, since the draining cover part 66 is disposed so as to cover the outer side of the sheet pressing part 63, the anchor groove 51, the resin fixture 60, and the end part 10a of the waterproof sheet 10A can be protected (FIG. 4C). .

  The resin fixture 60 can be similarly applied to a waterproof sheet other than the waterproof sheets 10A and 10B, and a waterproof sheet by field work formed in a sheet shape by spraying at the site (not shown).

  Further, a waterproof sheet 10 (10A, 10B) in which a resin fixture (functional member) 60 is integrally formed can be used in advance (FIG. 4D). In this case, the end edge 10a of the waterproof sheet 10 continues to the base 61 of the resin fixture 60, and the sheet pressing portion 63 and the end edge 10a of the waterproof sheet 10 coincide. Moreover, the waterproof sheet 10 (10A, 10B) can also be carried into the site and used as a structure in which a substantially horizontal portion and a substantially vertical portion are integrally formed in advance (FIG. 4D).

(6) Further, in the case of FIG. 4, the end 10a of the waterproof sheet 10A is directly inserted into the anchor groove 51 in the vertical surface 8 (concrete surface) without using the resin fixture 60. (FIG. 5).
Similar to FIG. 4, a vertical surface 8 (vertical surface 3 c) is formed following the veranda floor surface 4, and an anchor groove 51 is formed in the vertical surface 8 (FIG. 5A).

  Similar to the above, the primer layer 41 and the adhesive layer 43 are formed on the veranda floor surface 4 and the vertical surface 8, and the primer layer 41 and the adhesive layer 43 are formed in the anchor groove 51 if necessary.

  Then, waterproof sheet 10A (or 10B) is stuck to the veranda floor surface 4 and the vicinity of the anchor groove 51 of the vertical surface 8 (FIG.4 (b)).

Subsequently, the waterproof sheet 10 </ b> A is slackened immediately below the anchor groove 51, the end portion 10 a of the waterproof sheet 10 </ b> A is inserted into the anchor groove 51, and the epoxy groove 67 is filled in the anchor groove 51. Communication holes 13 and 13 are formed on the end portion 10a side of the waterproof sheet 10A, and the filled epoxy resin goes around the communication holes 13 and 13 and is firmly fixed when the epoxy resin is cured (FIG. 5 ( b) (c)).
In this case, after the end portion 10a of the waterproof sheet 10A is first inserted into the anchor groove 51 and hardened, other portions of the waterproof sheet 10A can be attached to the vertical surface 8 and the veranda floor surface 4.

  In addition, this edge part process is applicable similarly to waterproof sheets other than waterproof sheet 10A, 10B (not shown).

  Further, in this case, the waterproof sheet 10 (10A, 10B) has a rising portion (functional member) 18 that protrudes upward from the portion of the veranda floor surface 4, and ends in a lateral direction continuous to the upper edge of the rising portion 18. The insertion portion (functional member) 19 up to the edge 10a can be integrally formed, and the shape shown in FIG. 5B can be configured in advance and carried into the site for use (FIG. 5B).

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
18 Start-up part of waterproof sheet (functional member)
19 Insertion part of waterproof sheet (functional member)
DESCRIPTION OF SYMBOLS 20 Recessed formwork 21 Recessed formwork base 22 Base upper surface 23 Recessed formwork recess 24 Recessed bottom 25 Crosspiece 25a Crosspiece inner side 30 Topsheet 30a of waterproof sheet Edge 31 of topcoat High-quality urethane waterproof layer (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 51 Anchor groove 53 Fixed opening (waterproof sheet)
55 Solidified resin anchor 57 Base material 60 Resin fixture 61 Resin fixture base 62 Resin fixture insertion protrusion 63 Resin fixture sheet presser 64 Resin fixture parapet holder 65 Resin fixture communication hole 66 Resin fixture Drainage cover part 67 Epoxy resin 68 Upper reinforcement 69 Lower reinforcement 70 Corner 71 Gap 72A, 72B Building 73 Gap of building (above the expansion joint)
74A Upper floor 74B of base isolation structure Lower floor 75 of base isolation structure Clearance 76 Gasket 80 庇 81 Standing wall

Claims (2)

From the urethane resin-based urethane waterproofing agent formed on the vertical surface of the frame, the primer layer and adhesive layer are formed on the vertical surface, and molded near the anchor groove on the vertical surface outside the construction site. Paste the tarpaulin
An upper end portion is positioned in the vicinity of the anchor groove, an insertion protrusion of the resin fixing tool is inserted into the anchor groove, and the end portion of the waterproof sheet is pressed to the vertical surface side by the sheet pressing portion of the resin fixing tool. Edge processing method. Waterproof sheet made of urethane resin-based urethane waterproofing agent, which has an anchor groove on the vertical surface of the housing, a primer layer and an adhesive layer on the vertical surface, and is molded outside the construction site to the vicinity of the anchor groove on the vertical surface Paste
The waterproof sheet is loosened immediately below the anchor groove, and the end of the waterproof sheet is inserted into the anchor groove and fixed with an adhesive resin.

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