JP2015129439A - end processing method of urethane waterproof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an end processing method of an urethane waterproof sheet capable of forming a uniform waterproof layer while shortening a cure period on a job site, and capable of implementing proper processing using a steel anchor while taking secular change into account without driving the anchor into a concrete cursor through the waterproof sheet.SOLUTION: The end processing method uses one or more layers of waterproof sheets 10A each including an urethane-based waterproof material layer that is manufactured in the plant beforehand and affixed on the job site. An anchor channel 51 is opened in the concrete cursor, a primer layer 41 and an adhesive layer 43 are applied, and in the waterproof sheet 10A, a fixed opening 53 larger than the anchor channel 51 is punched beforehand. The waterproof sheet 10A overlaps the concrete cursor, the fixed opening 53 is positioned around the anchor channel 51, an adhesive resin is injected into the anchor channel 51 and the fixed opening 53 which are overlapped, and the cured adhesive resin becomes a cured resin anchor 55.

Description

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

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 pieces of asphalt roofing (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) Rubber sheet waterproofing This construction method is a construction method in which waterproof sheets made of rubber materials having a thickness of about 1 to 2 mm are bonded together with an adhesive to form a waterproof layer. 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 or 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).

3. Also, in the drain piping part that continues to the waterproof sheet, for example, a flexible hose made of a bellows-like resin with a flange-like sheet at the upper end is used, and a flexible hose is put in the drain pipe, and the flange-like sheet is attached to the waterproof sheet. (Patent document 3).
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 JP 2003-113663 A

  Patent Document 1 does not consider waterproofness, and does not consider friction or partial pressurization such as walking of a person. Therefore, applying the waterproof pad of Patent Document 1 directly to a floor surface such as a roof is not possible. could not.

  Moreover, in patent document 2, although the butyl rubber sheet A is previously used as an adhesive with a floor surface at the time of construction, since the urethane mat B is smaller than the butyl rubber sheet A, the urethane mat adjacent to each urethane mat. It is necessary to perform waterproofing on the periphery of B later, and the waterproof performance of the entire surface cannot be exhibited only by placing the urethane mat.

  In addition, in the treatment around the drain pipe of Patent Document 2, a flexible pipe is essential, and the minimum inner diameter of the flexible pipe is remarkably smaller than the inner diameter of the drain pipe, and there is a possibility that the rainwater drainage capacity may be significantly reduced. Therefore, when considering the situation where local heavy rains such as guerrilla heavy rain in recent years occur frequently, a treatment method that does not reduce the drainage capacity has been demanded.

  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. In addition, since the metal anchor penetrates the normal waterproof sheet made of resin, there is no followability, and there is a possibility that deformation occurs at the part where the waterproof sheet penetrates. Therefore, in any case, 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.

  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 in the field, and uniform The end of a urethane waterproof sheet that can be properly treated in consideration of secular change without forming a waterproof layer and using a steel anchor to penetrate the anchor through the waterproof sheet and into the concrete frame It is to provide a processing method.

  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.

That is, the present invention is a urethane waterproof sheet end treatment method characterized in that a waterproof layer is formed as follows.
(1) A “waterproof sheet” having the following configurations (1-1) and (1-2) is manufactured in advance outside the construction site.
(2) Apply primer on the floor of the construction site,
Subsequently, an “adhesive layer” is formed.
(3) Subsequently, the “waterproof sheet” is spread on the “adhesive layer” with the topcoat layer facing up, and the “waterproof layer” is formed on the floor surface.

  In addition, the waterproof base layer is a high-quality urethane resin-based waterproof resin material with high waterproof performance.

The waterproof sheet is configured in advance as follows in a place other than the 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 edge of the waterproof base layer and the peripheral edge of the topcoat layer were matched.

  Moreover, the functional member which protrudes in the surface side or back surface side of a waterproof sheet was shape | molded.

  The "floor surface" in the above description usually represents a roof surface, and includes a surrounding horizontal rising surface, a surrounding rising portion, and a concrete foundation rising portion when there is a concrete foundation for equipment. .

  In addition, 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 “top coat 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 urethane waterproof layer includes a urea resin-based material having 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. For example, the following members are used.
・ A part that is provided at the end of the sheet to fix the sheet to the concrete surface ・ A part that is provided at the end of the sheet to fix the sheet to the concrete surface and serves as a drainer ・ Drain at the end or intermediate part of the sheet A funnel-shaped member that is connected to the piping and inserted along the inside of the drain piping. Provided at the end or middle of the sheet to close the space between the surface where the sheet is applied and the surface facing the surface. Members such as packing

  In the present invention, a resin waterproof sheet is manufactured in advance in a factory or the like using a concavo-convex molding frame, and the resin waterproof sheet is laminated on the site, so that preparation for ensuring stable quality can be performed. This has the effect of significantly reducing on-site work, such as curing for preventing splashing and curing periods waiting for hardening.

  In addition, since the resin waterproof sheet can be formed with a certain thickness, according to the required waterproof performance, the optimal amount of waterproof material can be used without waste, various uneven patterns are formed on the bottom of the uneven molding frame, A waterproof sheet having various functions can also be configured.

  In addition, when forming a topcoat layer on the resin waterproof sheet, it is possible to form an arbitrary finished color pattern, an arbitrary surface pattern or some uneven pattern on the surface of the resin waterproof sheet in advance with an uneven molding frame, There is an effect that an arbitrary function and decoration can be given. Furthermore, since the high-quality urethane waterproof layer hardly changes over time, it can be applied without being removed at the time of refurbishment, and this can also prevent the generation of waste materials.

  In the present invention, the anchor is not used for the end treatment of the waterproof sheet, and the metal anchor is not press-fitted into the concrete, so that there is no possibility of cracking in the concrete.

  Moreover, since the metal anchor does not penetrate the normal resin waterproof sheet, the followability is good, and there is no possibility that deformation occurs at the portion where the waterproof sheet penetrates. Therefore, in any case, it is possible to guarantee a long-term waterproof layer such as 20 years and 30 years, and this is particularly remarkable on a vertical surface or an inclined surface.

FIGS. 1A to 1C are longitudinal sectional views for explaining edge treatment of a horizontal waterproof sheet in the first embodiment of the urethane waterproof sheet edge treatment method of the present invention. FIGS. 2A to 2C are longitudinal sectional views illustrating end processing of a waterproof sheet or the like at the top end of a parapet in a second embodiment of the end processing method for a urethane waterproof sheet of the present invention. FIGS. 3A to 3C are diagrams for explaining end processing of a waterproof sheet in a second embodiment of the end processing method of the urethane waterproof sheet of the present invention, and FIG. This is a molded waterproof sheet. FIGS. 4A to 4C are diagrams for explaining end processing of a waterproof sheet in a third embodiment of the end processing method of the urethane waterproof sheet according to the present invention, and FIG. There is a molded waterproof sheet. FIGS. 5 (a) and 5 (b) are diagrams for explaining the end treatment of the waterproof sheet in the fourth embodiment of the end treatment method for the urethane waterproof sheet of the present invention, and FIG. 5 (c) is FIG. 5b). It is sectional drawing in CC line. FIGS. 6 (a) and 6 (b) are examples in which the urethane waterproof sheet end treatment method of the present invention is applied to an expansion joint, and FIG. 6 (c) is a DD line in FIG. 6b). FIG. FIGS. 7A and 7B are views for explaining an example applied to a vibration control structure in the sixth embodiment of the end treatment method of the urethane waterproof sheet according to the present invention, and FIG. This is a molded waterproof sheet. FIGS. 8A and 8B are views for explaining another example applied to the vibration control structure in the seventh embodiment of the end treatment method of the urethane waterproof sheet of the present invention, and FIG. It is a waterproof sheet molded in one piece. FIG. 9A is a seventh embodiment of the end treatment method for a urethane waterproof sheet according to the present invention, and is an example in which a waterproof sheet integrally formed with a functional member is pasted on the upper surface of the bag. It is an enlarged view of the E section. FIG. 10A is an embodiment in which a waterproof sheet integrally formed with a functional member is pasted on the upper surface of a standing wall in the seventh embodiment of the end treatment method of the urethane waterproof sheet of the present invention. Is an enlarged view of F section. FIG. 11 is a plan view of the roof. FIGS. 12A to 12D are AA enlarged cross-sectional views of FIG. 1 for explaining a construction method applied to a roof in an embodiment of the present invention. FIGS. 13A to 13C are longitudinal sectional views of a standard waterproof sheet used for carrying out the present invention. 14 (a) to 14 (e) are longitudinal sectional views showing the manufacturing process of the waterproof sheet used in the practice of the present invention. FIG. 15 is a plan view of the veranda. FIGS. 16A to 16D are BB enlarged cross-sectional views of FIG. 15 for explaining a construction method applied to a veranda in the embodiment of the present invention.

1. The waterproof sheet 10 used in the present invention will be described. The waterproof sheet 10 has a configuration in which a plurality of layers are formed over the entire surface (FIG. 13).

(1) Topcoat layer 30 in order from front surface 11 to 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 the three layers (FIG. 13A). 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. 13B).

(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
(FIG. 13C) Here, the four edges of the waterproof sheet 10B, the edge 31a of the high-quality urethane waterproof layer 31, and the general urethane waterproof layer 32. In this case, the top coat layer 47 is formed on the spot or the top coat 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.

(4) The waterproof sheet 10 (10A, 10B) is manufactured by coating the layers in order in the concave mold 20 having the molding recess 23 (FIG. 14). In addition, the waterproof sheet 10 is manufactured in advance in a place different from the floor of the actual construction site, such as a vacant land in the site of a factory or construction site, or a vacant room on the lower floor of the site.

2. The waterproofing method using the waterproof sheet 10 is performed as follows.

(1) When constructing on the rooftop floor surface 1 (FIG. 11) using the waterproof sheet 10A, the primer layer 41 and the adhesive layer 43 are formed by a normal method on the surface requiring waterproof treatment ( FIG. 12 (a)). Subsequently, the waterproof sheets 10A and 10A are laid on the center side of the rooftop floor surface 1 (excluding the raised portions such as the drainage grooves and the parapet 3) without any gap between the adjacent waterproof sheets 10A and 10A (FIG. 12). (B), FIG. 11).

Subsequently, urethane waterproofing agent is applied to the raised portions of drainage grooves and parapets 3 where the waterproof sheets 10A and 10A are not laid by a conventional method to form the on-site waterproof layer 45 (FIG. 12C). Subsequently, a top coat layer 47 is formed (FIG. 12D).
This completes the waterproofing work.

  Here, a waterproof sheet 10B on which the top coat layer 30 is not formed can also be used (not shown). In particular, it is effective because the cost can be reduced at a site where there is little ultraviolet irradiation such as no direct sunlight.

(2) When the waterproof sheet 10B is used to construct the veranda floor surface 4 (FIG. 15), the primer layer 41 and the adhesive layer 43 are formed by a normal method on the surface requiring waterproofing treatment ( FIG. 16 (a)). Subsequently, the waterproof sheets 10B and 10B are laid between the adjacent waterproof sheets on the central side of the veranda floor surface 4 (excluding the raised portion of the drainage groove 6 and the parapet 3 and the indoor raised portion 7) with no gap between them. (FIG. 16 (b), FIG. 15).

  Subsequently, a waterproofing layer 45 is formed by applying a urethane waterproofing agent to the raised portion of the drainage groove and parapet 3 where the waterproof sheets 10B and 10B are not laid, and the indoor raised portion 7 by a conventional method. (FIG. 16C). Subsequently, in the waterproof sheet 10B, 10B, the drainage groove, the raised portion of the parapet 3, etc., the indoor side raised portion 7, etc., in the range where the waterproof layer is formed (the surface on which the waterproof sheet 10B and the urethane waterproofing agent appear), A top coat layer 47 is formed (FIG. 16D).

  This completes the waterproofing work. Note that the top coat layer 47 can be omitted (not shown) when the influence of ultraviolet rays is small and the waterproof performance is not so required.

  When high waterproof performance is required, the waterproof sheet 10A having the top coat layer 30 formed as described above can also be used (not shown).

(3) With the waterproof sheet 10 (10A, 10B), if the raised portion (functional member) of the parapet is previously projected above the waterproof sheet 10 (10A, 10B) and is integrally formed (not shown) (In factories, etc.), the work at the site can be omitted and the waterproof performance at the border can be improved. Similarly, when there is a drain pipe on a plane that requires waterproofing, the funnel-shaped part (functional member) protruding downward is formed in a waterproof sheet 10 ( 10A and 10B) (not shown).

  Embodiments of the present invention will be described with reference to the drawings. In this embodiment, a waterproof sheet 10A in which a top coat layer 30 is formed in advance is used (FIGS. 13A and 13B).

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. 14A). 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 the top coat layer 30 (FIG. 14B).

  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. 14C). 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. 14D). 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 is formed over the entire surface (the end edges 20a, 31a, and 32a of each layer are aligned) (FIGS. 4E and 3A).

(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. 14A). Similarly, reverse slopes are possible.

  In the above, the top coat layer 30 located on the surface 11 (the uppermost surface) is formed in use (FIG. 14), but in general from the bottom 24 in the recess 23, the general urethane waterproof layer 32, 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 addition, in the above, the fixed concave mold frame 20 may have a structure in which one concave portion 23 is formed (FIG. 2 (a)), or a plurality of (two, four, twelve, etc.) concave portions. It is also possible to adopt a structure in which 23 and 23 are formed (not shown).

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).

  In the above, the waterproof layer is 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. 13 (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.

2. Waterproof design

(1) The rooftop (construction site) to be constructed has a penthouse (tower) 2 formed in the corner, a rectangular plane with a part missing, and parapets 3 and 3 formed around it (FIG. 11).
Therefore, at this site, the rooftop floor surface 1 surrounded by the parapets 3 and 3 and the penthouse 2 is waterproofed.

(2) An allocation table representing the arrangement of the waterproof sheet 10 having a length L ₁ × L ₂ is prepared (FIG. 11). In the site of FIG. 1, six waterproof sheets 10 are prepared (FIG. 11).

3. On-site construction

(1) Based on the allocation table, the allocation lines 5 and 5 are drawn on the rooftop floor surface 1 of the construction site, or various auxiliary marks are put on the start-up portion (FIG. 11).

(2) Apply ordinary primer to the entire rooftop floor surface 1 (including the necessary rising surface of the parapet 3, the rising surface of the penthouse 2, and the drainage groove 6) so as to leave the allocation line 5 and the like. A primer layer 41 is formed (FIG. 12A). Application is performed by a normal method such as spraying or roller.

(3) A urethane resin adhesive is applied on the primer layer 41 so as to leave the allocation line 5 and the like, thereby forming an adhesive layer 43 (FIG. 12A). Application is performed by a normal method such as spraying or roller.

(4) Based on the drawn allocation line 5 and the like, the waterproof sheets 10A and 10A are spread and pasted on the center side of the rooftop floor surface 1 to constitute the waterproof sheets 10A and 10 group A (FIG. 12B). Since the layers coincide with each other at the peripheral edge (31a, 32a, 33a) of the waterproof sheet 10A, the edges are in close contact with each other and no waterproofing treatment is required, but if necessary, the adjacent waterproof sheets 10A, 10A A urethane resin-based sealing agent (adhesive) can also be applied to the contact portions 15 and 15 (FIG. 13A).

(5) Subsequently, a conventional urethane waterproofing agent is applied between the periphery of the waterproof sheets 10A and 10A (including the drainage groove 6), the parapets 3 and 3, and the penthouse 2 to form the in-situ waterproofing layer 45. (FIG. 13 (c)). The urethane waterproofing agent used in the in-situ waterproofing layer 45 is a type in which a normal two-component base and a solidifying agent are collided and sprayed, and for example, “Cosmic RIM S200” from Uplex Co., Ltd. is used. However, various materials can be selected and used according to the required performance.

(6) Subsequently, if necessary, a conventionally used UV-preventing topcoat layer 47 is formed on the surface of the waterproofing layer 45 (FIG. 12D). The waterproof construction is completed as described above.

  If the top coat layer 47 is formed, the maintenance work can be greatly reduced since the on-site waterproof layer 45 is left as it is during the maintenance, and the top coat layer 45 may be overcoated. Moreover, since the topcoat layer 30 is formed in advance on the waterproof sheet 10A, the same effect is obtained.

(7) Other construction procedures

  In the above, the primer layer 41 and the adhesive layer 43 are formed on the entire roof top surface 1. First, the primer layer 41 and the adhesive layer 43 are formed only on the portion (center side) where the waterproof sheets 10A and 10A are pasted. After the waterproof sheets 10 and 10 are pasted, the primer layer 41 and the adhesive layer 43 of the in-situ waterproof layer 45 can be formed (not shown).

  In addition, in the above, after the waterproof sheet 10 or 10 is pasted, the in-situ waterproof layer 45 is formed. Conversely, after the in-situ waterproof layer 45 is formed first (or simultaneously), the waterproof layer is waterproofed. Sheets 10A and 10A can also be pasted (not shown).

  Moreover, in the said Example, although the on-site waterproof layer 45 was formed in the circumference | surroundings of the waterproof sheet 10A, 10A group, all or a part of the on-site waterproof layer 45 is made into a special shape waterproof sheet in the factory in advance, and is similar to the waterproof sheet 10A. In this case, the waterproofing work can be further simplified. In this case, the specially shaped waterproof sheet portion (functional member) can be formed integrally with the end edge of the waterproof sheet 10A (not shown).

  Embodiments of the present invention will be described with reference to the drawings. In this embodiment, a waterproof sheet 10B that does not form the top coat layer 30 is used.

1. Manufacture of waterproof sheet 10

(1) As in Example 1, the crosspieces 25 and 25 are arranged on the upper surface (flat surface) 22 of the plate-like base portion 21 to form the recesses 23 that match the shape of the waterproof sheet 10 (FIG. 14). (See (a)).

(2) Prepare the concave molds 20 and 20 with 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 high-quality urethane waterproofing agent is sprayed into the bottom 24 of the recess 23 (the upper surface 22 of the base 21. Flat surface) to form the high-quality urethane waterproof layer 30. The high-quality urethane waterproofing agent to be injected is the same as in the above embodiment.

  Subsequently, when the high-quality urethane waterproof layer 30 is dry, a general-purpose urethane waterproof layer 31 in which various increasing components are mixed into the urethane base material is applied to the surface side of the high-quality urethane waterproof layer 30, and the general-purpose urethane waterproof layer 31 is applied. Form. A general-purpose urethane waterproofing agent is the same as that of the said Example. (See FIG. 14 (d)).

(3) Subsequently, when the general urethane waterproof layer 32 is dried, it is removed from the mold, and the filling into the recess 23 (laminated body of the high-quality urethane waterproof layer 31 and the general urethane waterproof layer 32) is moved up and down. In other words, from the front surface 11 toward the back surface 12,
High quality urethane waterproof layer 31 Thickness t ₂ = 1-3mm
Urethane waterproof layer 32 for general use Thickness t ₃ = 1-5mm
Constitutes a waterproof sheet 10B formed in two layers over the entire surface (FIG. 3C). Therefore, the edge of the high-quality urethane waterproof layer 31 and the edge of the general urethane waterproof layer 32 substantially coincide with each other in four rounds.

(4) The structure of the other waterproof sheet 10 is the same as that of Example 1.

2. On-site construction

(1) As in the first embodiment, based on the allocation table, the allocation lines 5 and 5 are drawn on the rooftop surface of the construction site, or various auxiliary marks are added to the start-up portion (see FIG. 11).

(2) As in the previous embodiment, the primer layer 41 is formed, and the adhesive layer 43 is formed on the primer layer 41 (see FIG. 12A), and is assigned to the center side of the rooftop floor surface 1 Based on the table, the waterproof sheets 10 and 10 are spread and pasted to constitute the waterproof sheets 10B and 10B (see FIG. 13C and FIG. 12B).

(3) Subsequently, an in-situ waterproof layer 47 is formed between the periphery of the waterproof sheets 10B and 10B and the parapets 3 and 3 and the penthouse 2 as in the first embodiment (see FIG. 12C).

(4) Subsequently, a conventionally used UV-preventing topcoat layer 47 is formed on the entire top surface of the roof (the surfaces of the waterproof sheets 10 and 10 and the surface of the in-situ waterproof layer 45) (FIG. 13C). ). The waterproof construction is completed as described above. In addition, before forming the topcoat layer 47, the mold release agent adhering to the surface of the waterproof sheet 10B (the surface of the high-quality urethane waterproof layer 31) is removed at the factory or in the field.

(5) The other construction method in the said Example is the same as that of the said Example 1.

  Next, based on FIGS. 1-5, the process of the edge part of waterproof sheet 10A, 10B is demonstrated in the said Example.

1. Fixing the end of the waterproof sheet to the floor 1 (Fig. 1)

(1) An anchor groove 51 is formed in a floor surface (concrete) 1 that is a concrete frame, and a primer layer 41 and an adhesive layer 43 are applied to the floor surface 1. A primer layer 41 and an adhesive layer 43 are also provided in the anchor groove 51 if necessary (FIG. 7A). The anchor groove 51 is provided at a position corresponding to the fixed opening 53 formed in the waterproof sheet 10A. The anchor groove 51 is formed by a slit-shaped (joint-shaped) concave portion that is continuous in the width direction of the waterproof sheet 10A to be used. Can be provided in parallel with the width direction of the waterproof sheet with a gap (not shown).
The waterproof sheet 10A to be used is composed of the top coat layer 30, the high-quality urethane layer 31, and the general urethane layer 32 as in the above-described embodiment, and a fixed opening 53 larger than the anchor groove 51 is previously opened (FIG. 1A). . The fixed opening 53 is made to correspond to the position of the anchor groove 51.

(2) Overlay the waterproof sheet 10A on the floor surface 1 and position the fixed opening 53 around the anchor groove 51 (FIG. 1B. In this case, the fixed opening 53 is located in the anchor groove 51 in a plan view. Although it is desirable to fit, there is no problem if a common portion is formed in the anchor groove 51 and the fixed opening 53.

(3) An adhesive resin made of epoxy resin is injected into the overlapping anchor groove 51 and fixed opening 53. In this case, the fixed opening 53 is also filled with an epoxy resin and positioned to the vicinity of the bottom of the top coat layer 30 of the waterproof sheet 10A (FIG. 1C). In the case of an epoxy resin, the primer layer 41 is usually unnecessary. Moreover, it can also be filled with a resin other than an epoxy resin.

  Subsequently, the solidified epoxy resin becomes the solidified resin anchor 55, and the top coat layer 47 is formed on the upper surface of the solidified resin anchor 55. It is desirable that the top surface of the topcoat layer 47 and the top surface of the topcoat layer 30 of the waterproof sheet 10A be formed flush with each other (FIG. 1C).

  In FIG. 1 (c), the on-site waterproof layer 45 is applied to the right side of the waterproof sheet 10A in the same manner as in the above-described embodiment. Alternatively, the waterproof sheet 10A can be similarly constructed.

(4) In the above, the resin base material 57 is positioned on the center side of the anchor groove 51 and the fixed opening 53 (FIG. 7 (c), indicated by a chain line), and the gap between the outside of the resin base material 57 and the anchor groove 51, the resin The space between the outside of the base material 57 and the fixed opening 53 is filled with epoxy resin, and the solidified resin anchor 55 is configured in a state where the resin base material 57 and the filled liquid epoxy resin are solidified.

(5) Although the waterproof sheet 10 </ b> A is used here, the waterproof sheet 10 </ b> B that does not form the top coat layer 30 can also 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).

2. Fixing the waterproof sheet 10 to the start-up part of the parapet 3, which is a concrete frame (Fig. 2)

(1) The anchor groove 51 is formed in the top end (top surface) 3a of the parapet 3, and the primer layer 41 and the adhesive layer 43 are applied to the top end 3a, the corner 3b, the upper end 3c of the vertical surface, and the like. The primer layer 41 and the adhesive layer 43 are also applied in the anchor groove 51 (FIG. 2A). The anchor groove 51 is formed in a slit shape (joint shape), a planar circle, or the like as in the case of FIG.

  The waterproof sheet 10A used includes a top coat layer 30, a high-quality urethane layer 31, and a general urethane layer 32 (FIG. 2 (a)).

(2) A resin fixture (made of epoxy resin) 60 includes a base 61 that presses the top end 3a of the parapet 3, an insertion protrusion 62 that enters the anchor groove 51, a sheet presser 63 on one side of the base 61, and a parapet on the other side. The holding part 64 is formed and configured (FIG. 2B). The resin fixture 60 has a shape corresponding to the anchor groove 51 such as long in the depth direction in FIG. 8B (corresponding to the slit-shaped anchor groove 51) and short in the depth direction (corresponding to the circular anchor groove 51). And

  A waterproof sheet 10A is affixed to the parapet 3, and an epoxy adhesive 43 is applied to the end 10a of the waterproof sheet 10A (FIG. 2B).

(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 toward the parapet 3 by the sheet pressing portion 63. At this time, the parapet pressing portion 64 of the resin fixture 60 is put on the upper end portion of the vertical portion 6c from the corner portion 3b of the parapet (FIG. 2C). The gap between the insertion protrusion 62 and the anchor groove 51 is filled with an adhesive resin made of epoxy resin.

(4) Although the waterproof sheet 10A is used here, it can be applied to the waterproof sheet 10B in which the top coat layer 30 is not formed, as in the embodiment of FIG. 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).

(5) Further, here, the waterproof sheet 10 (10A, 10B) has a substantially horizontal part (in the vicinity of the anchor groove 51) and a substantially vertical part of the rising part that covers the top plate 3a of the parapet 3. Usually, it is molded in advance, but it can be bent along the surface of the parapet 3 on site if a certain degree of flexibility can be imparted.

  Further, in this case, the resin fixture (functional member) 60 can be molded in advance integrally with the waterproof sheet 10 (10A, 10B) and carried into the site for use (FIG. 3 (d), FIG. 4 ( d), see FIG. 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).

3. Fixing of the waterproof sheet 10 to the vertical surface 8 which is a concrete frame (FIG. 3, FIG. 4 etc.)

(1) A resin fixture (draining plate) 60 used in this embodiment is formed by forming an insertion projection 62 entering the anchor groove 51 and a sheet pressing portion 63 perpendicular to the insertion projection 62 on the base 61 (see FIG. 3 (d)). The length of the resin fixture 60 in the depth direction corresponds to the shape of the anchor groove 51.

  Further, 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 (at the front end side of the base portion 61). 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.

  The resin fixture 60 is formed with an inclined portion 66b on the base end side (base 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. 3C). .

  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. 3A). 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. 3B). In this case, the waterproof sheet 10A is formed up to just below the anchor groove 51 (FIG. 3B).

  If necessary, after the primer layer 41 and the adhesive layer 43 are formed in the anchor groove 51, the insertion protrusion 62 of the resin fixture 60 is inserted into the anchor groove 51, and the end 10 a of the waterproof sheet 10 A is attached by the sheet pressing portion 63. Press firmly toward the vertical surface 8 side (FIG. 3C). In this state, the anchor groove 51 is filled with an epoxy resin 67 as an adhesive resin, and the gap between the insertion protrusion 62 and the sheet pressing portion 63 of the resin fixture 60 and the anchor groove 51 is filled.

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 drain cover portion 66 is disposed so as to cover the outside of the sheet pressing portion 63, the anchor groove 51, the resin fixture 60, and the end portion 10a of the waterproof sheet 10A can be protected (FIG. 3C). .
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. 3D). 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. Further, 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. 3D).

(2) Further, an example will be described in which the resin fixture 60 (in this case, the communication hole 65 is not formed) is used in a place where the top surface needs to be waterproofed like the top of the parapet (FIG. 4). . In this case, the anchor groove 51 is not formed on the concrete surface.

  In this case, a horizontal plane 9 (top end 3a) is formed following the vertical plane 8 (vertical plane 3c). Similarly to the above, after forming the primer layer 41 and the adhesive layer 43 on the vertical plane 8 and the horizontal plane 9, A waterproof sheet 10A (or 10B) is attached to 8 (FIG. 4A). In this case, the edge 10a of the waterproof sheet 10A is positioned at the upper end of the vertical surface 8 (the edge of the horizontal plane 9). (FIG. 4A).

  Subsequently, after the adhesive layer 43 is formed in the vicinity of the edge 10a of the waterproof sheet 10A, the end of the waterproof sheet 10A is secured by the sheet pressing portion 63 while the insertion protrusion 62 of the resin fixture 60 is bonded to the end of the horizontal surface 9. The portion 10a is strongly pressed to the vertical surface 8 side (FIG. 4B).

  Subsequently, the adhesive layer 43 is formed on the upper surface of the sheet pressing portion 63 of the resin fixture 60, and another waterproof sheet 10 </ b> A is bonded to the horizontal surface 9 and the upper surface of the sheet pressing portion 63. In this case, the other waterproof sheet 10A is thinly formed by cutting out the lower surface side so that the upper surface of the other waterproof sheet 10A is substantially flush (FIG. 4B).

Also in this case, since the draining cover part 66 is disposed so as to cover the outside 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. 4B). ).
Moreover, although the lower surface side of the other waterproof sheet 10A of the horizontal surface 9 is cut out, the cutout can be omitted (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 edge 10a of the waterproof sheet 10 continues to the base 61 of the resin fixture 60, and the insertion protrusion 62 and the edge 10a of the waterproof sheet 10 on the horizontal surface 9 coincide (FIG. 4D). In addition, as shown in FIG.3 (d), the waterproof sheet 10 and the resin fixing tool 60 of the vertical surface 8 can be shape | molded integrally, and can be carried in and used for the field (not shown).

(3) Further, in the case of FIG. 3, 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. 3, a vertical surface 8 (vertical surface 3 c) is formed following the veranda floor 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.3 (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).

  Next, based on FIG. 6, the process of the other edge part of waterproof sheet 10A, 10B is demonstrated. In this embodiment, the embodiment of FIG. 5 is applied, and a waterproof sheet 10A (10B) is attached above the joints of two buildings 72A and 72B connected by an expansion joint.

When connecting two buildings 72A, 72B with different vibration characteristics such as different building structures and foundations, an expansion joint is provided with a gap 73 of about 20 to 100 mm and structurally cut to allow for expansion and contraction of the gap 73 It was connected with. In this case, the gap 73 may be provided with various covers so that the expansion joint cannot be seen, or the rubber material may be loosened in the gap 73. The gap 53 is usually outdoors, and a waterproof treatment near the top may be required.
Thus, in this embodiment, the upper portion of the gap 73 in the expansion joint portion is covered with the waterproof sheet 10A (10B) at the ends of the two buildings 72A and 72B.

(1) Buildings 72A and 72B are juxtaposed with a gap 73 therebetween. Anchor grooves 51 are respectively formed in the horizontal planes 9 of the buildings 72A and 72B in the vicinity of the gap 73 (FIG. 6A).

(2) The primer layer 41 and the adhesive layer 43 are formed on the horizontal plane 9, and if necessary, the primer layer 41 and the adhesive layer 43 are formed in the anchor groove 51, the vertical surface 8 and the chamfered portion 8a. Thereafter, the waterproof sheet 10A (or 10B) is attached so as to cover the upper portion of the gap 73, and the end portions 10a and 10a of the waterproof sheet 10A are respectively inserted into the anchor grooves 51 and 51 in the same manner as in FIG. Then, the epoxy resin 67 is filled in the anchor groove 51 (FIG. 8b)).
In this case, similarly to the case of FIG. 5, the communication holes 13 and 13 are formed on the end portions 10a and 10a side of the waterproof sheet 10A, and the filled epoxy resin goes around the communication holes 13 and 13, and the epoxy resin When cured, it is strongly fixed (FIG. 6C).

(3) In the above, after inserting and hardening the end portion 10a of the waterproof sheet 10A into the anchor groove 51 of one building 72A (or 72B) first, the anchor of the other building 72B (or 72A) The end portion 10a of the waterproof sheet 10A can be inserted into the groove 51 and fixed.

(4) It should be noted that this end treatment can be similarly applied to conventional waterproof sheets other than the waterproof sheets 10A and 10B (not shown).
Further, in this case, the waterproof sheet 10 (10A, 10B) is integrally formed with the insertion portion (functional member) 19 up to the edge 10a toward the lower side continuously to the portion disposed on the horizontal plane 9 and covering the gap 73. It is also possible to pre-configure the shape of FIG. 6B by molding (FIG. 6B).

(5) Moreover, although it applied to the two buildings 72A and 72B connected by the expansion joint, it is applicable also to the structure which has the clearance gap 73 similarly (not shown). For example, when applied to buildings 72A and 72B such as station buildings, factories, and roads that are constantly subjected to vibrations, waterproofing can be efficiently performed in consideration of the effect of quick drying of the epoxy resin adhesive.

  Next, based on FIGS. 7 to 8, a gasket for a vibration control (base isolation) structure using the waterproof sheets 10A and 10B in the embodiment will be described.

  A seismic isolation structure is constructed in which the upper floor 74A and the lower floor 72B are structurally cut and a gap 75 is provided between the upper floor 74A and the lower floor 74B and connected by a damper such as laminated rubber. Yes. In this case, a gasket is provided on the outer peripheral side so that moisture, dust, insects and the like do not enter from the gap. In general, the horizontal displacement between the lower surface of the upper floor 74A and the upper surface of the lower floor 74B during an earthquake is expected to be about ± 40 mm, that is, about 80 mm with respect to the initial position. However, the hollow gasket has a problem that it does not rotate and return to its original state.

(1) An inverted T-shaped urethane gasket 76 having a horizontal piece 76a and a vertical piece 76b is formed (FIG. 7A). The primer layer 41 and the adhesive layer 43 are formed on the horizontal surface 9 of the lower floor 74A in the same manner as described above, the waterproof sheet 10A (10B) is pasted, and the horizontal piece 76a of the gasket 76 is adhered to the upper surface of the waterproof sheet 10A, so that the gap 75 Is substantially blocked (FIG. 7A). Since the upper end of the vertical piece is located in the notch on the upper surface of the upper floor 74B, the vertical piece 74b follows and a substantially sealed gap 75 can be maintained even when horizontal displacement occurs.
In this case, it can be similarly applied to conventional waterproof sheets other than the waterproof sheets 10A and 10B (not shown), and the waterproof sheet can be omitted when the lower floor 74A is a basement floor that does not require waterproofing. (FIG. 7B).

(2) A hollow urethane gasket 76 having a lateral piece 76a and an annular piece 76c is formed (FIG. 8A). Similarly, the primer layer 41 and the adhesive layer 43 are formed on the horizontal surface 9 of the lower floor 74A in the same manner as described above, the waterproof sheet 10A (10B) is pasted, and the horizontal piece 76a of the gasket 76 is bonded to the upper surface of the waterproof sheet 10A. The gap 75 is substantially sealed (FIG. 8A). Since the upper end of the annular piece 76c is abutted against the upper surface of the upper floor 74B but is not bonded, the annular piece 74c can follow and maintain the substantially sealed gap 75 even when horizontal displacement occurs.
In this case, it can be similarly applied to conventional waterproof sheets other than the waterproof sheets 10A and 10B (not shown), and the waterproof sheet can be omitted when the lower floor 74A is a basement floor that does not require waterproofing. (FIG. 8B).

(3) In the case of FIGS. 7A and 8A, the waterproof sheet 10 (10A, 10B) in the horizontal direction protrudes upward from the gasket (functional member) 76, and further downward. The part (functional member) protruding toward the front can be integrally formed in advance and carried into the site as the waterproof sheet 10 (10A, 10B) (FIGS. 7C and 8C). ).

  An 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.

(1) A ridge 80 protrudes laterally from the vertical surface 8 of the concrete frame, and the ridge 80 is formed with a top surface 80a and a tip end surface 80b that is substantially vertical from the corner 80c downward at the tip. 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. 9B). 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. 9 (a)), and 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).

(2) The standing wall 81 made of concrete has a corner 81 upper surface 81a formed 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. 10B). 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. 9). (A)). Another waterproof sheet 10A (10B) or a conventional waterproof treatment can be applied to the side surface 81b.

DESCRIPTION OF SYMBOLS 1 Rooftop surface 2 Penthouse 3 Parapet 4 Veranda floor surface 5 Allocation line 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
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 (8)

It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
An anchor groove is made in the concrete frame, a primer layer and an adhesive layer are provided, and the waterproof sheet has a fixed opening larger than the anchor groove in advance, and the waterproof sheet is overlaid on the concrete frame, and the fixed opening is positioned around the anchor groove. A method for treating an end portion of a urethane waterproof sheet, wherein an adhesive resin is injected into the overlapping anchor grooves and fixed openings, and the solidified adhesive resin becomes a solidified resin anchor. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
An anchor groove is formed in the concrete frame, a primer layer and an adhesive layer are provided, and an insertion protrusion of a resin fixture having an insertion protrusion and a sheet pressing part formed on the base is inserted into the anchor groove, and the end of the waterproof sheet is formed by the sheet pressing part. The urethane waterproof sheet end treatment method is characterized in that an adhesive resin is filled in a gap between the insertion protrusion and the anchor groove. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
The resin fixture is a base formed with an insertion protrusion entering the anchor groove, a sheet pressing part perpendicular to the insertion protrusion, and a draining cover part formed in parallel with the sheet pressing part outside the sheet pressing part. A horizontal anchor groove is made in the vertical surface of the concrete frame, a urethane waterproof sheet is pasted on the vertical surface from below, an insertion protrusion of the resin fixture is inserted into the anchor groove, and the end of the waterproof sheet is vertically aligned with the sheet pressing portion. A urethane waterproof sheet end treatment method characterized by pressing firmly to the surface side and filling an anchor groove with an adhesive resin to fill a gap between the insertion protrusion of the resin fixture and the sheet pressing portion and the anchor groove.   4. The method for treating an end portion of a urethane waterproof sheet according to claim 3, wherein the resin fixture forms a concrete frame pressing portion. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
An anchor groove is formed on the vertical surface of the concrete frame, a primer layer and an adhesive layer are formed on the vertical surface, a waterproof sheet is pasted to the vicinity of the anchor groove, and then the end of the waterproof sea is inserted into the anchor groove, An end treatment method for a urethane waterproof sheet, wherein an anchor resin is filled in an adhesive groove, and the filled adhesive resin is cured and fixed. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
Anchor grooves are formed on the horizontal planes of two buildings that are arranged in parallel with a gap connected by an expansion joint, and a primer layer and an adhesive layer are formed on the horizontal plane, and the resin is cured and fixed. A method for treating an end portion of a urethane waterproof sheet. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
A seismic isolation structure is constructed in which the upper and lower floors are structurally cut and a gap is provided between the upper and lower floors and connected by dampers such as laminated rubber. When installing gaskets to prevent moisture, dust, insects, etc. from entering, form a reverse T-shaped urethane gasket with horizontal and vertical pieces, and put a primer layer and adhesive layer on the lower horizontal surface. A method for treating an end portion of a urethane waterproof sheet, comprising: forming and attaching a waterproof sheet; and adhering a horizontal piece of a gasket to an upper surface of the waterproof sheet to substantially seal a gap. It uses one or more waterproof sheets including a urethane-based waterproof material layer that is manufactured in advance at the factory and applied on-site.
When a waterproof sheet is applied to a concrete frame that has a vertical protrusion and a horizontal protrusion extending laterally from the vertical surface, and the vertical surface is formed downward from the corner to the top, the waterproof sheet On the side, a sheet pressing portion and a draining cover portion that press the corner and the tip surface are formed with a draining portion protruding downward, and a primer layer and an adhesive layer are formed on the upper surface and the tip surface of the ridge, A method for treating an end portion of a urethane waterproof sheet, comprising: attaching a waterproof sheet to an upper surface of a ridge and positioning a draining portion on a tip surface.

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