TWI631018B - Waterproof construction sheet - Google Patents

Abstract

An object of the present invention is to provide a sheet for waterproof construction which is suitable for use in a sheet of a waterproof construction portion of a building structure, which is thin and soft, and has good workability, and the adhesion of the sheet during construction is strong and temporarily fixed. Then, the effect is sufficient, and the piece of cloth at the time of construction does not become blocked when the cloth is opened, and the opening work is easy.

The sheet for waterproofing construction is a sheet for waterproof construction, and is characterized in that one side of the non-permeable metal film 2 or the non-permeable metal vapor deposited film on which a plurality of holes 5 are formed is joined. A mesh-like reinforcing fabric 6 which is easily processed is applied, and the mesh-shaped reinforcing fabric 6 includes a concave portion and a convex portion, and the concave portion is woven using a thermoplastic synthetic resin flat yarn 3, and the convex portion is a coarse yarn. (coarse yarn) 4 to weave.

Description

Waterproof construction sheet

The present invention relates to a sheet for waterproof construction used in waterproofing construction of a building, particularly a portion exposed to rain or running water.

As a waterproof construction method such as a floor surface of a roof or a roof parking lot to which a building structure is applied, it is known that (1) after the body surface of the building structure is subjected to a primer treatment, a reinforcing cloth is placed to form an urethane system. After the water repellent material layer is applied, a coating method is applied thereon by a finish coating film, and (2) a ventilating sheet such as a non-woven fabric is applied to the entire surface of the underlying layer, and a waterproof material layer is formed thereon. Ventilation buffer method, etc.

However, in the former bonding method, since the waterproof material layer is joined and integrated over the entire surface of the substrate, the followability to the crack or the movement of the seam occurring on the substrate is insufficient. Further, when the water contained in the underlayer becomes water vapor due to an increase in temperature and diffuses to the interface between the underlayer and the water repellent layer, the water vapor pressure is caused by the escape of the anhydrous vapor. The phenomenon that the waterproof material layer is partially peeled off from the base portion and is bulged (generally referred to as "expansion phenomenon").

On the other hand, by the latter ventilation buffering method, the air permeable cushioning material exhibits degassing performance, and steam is evaporated from the basal layer. The gas is guided to the degassing tower by the permeable cushioning material layer at the joint interface, and is released to the outside to prevent the expansion phenomenon as described above. However, compared with the bonding method, it is pointed out that construction problems such as time are required due to complicated construction.

In Patent Document 1 for improving such a problem, it is disclosed that a sealant is applied to the entire surface of the body of the building structure, and the adhesive sheet is adhered to the sealant-coated surface, and the adhesive sheet is adhered to the surface. The method of coating.

By this method, the adhesive sheet portion exerts the degassing property to suppress the swelling phenomenon, and at the same time, the followability to the crack or seam movement occurring on the substrate is also increased. However, at the construction work site, the workability is remarkably lowered due to the labor and time required for the adhesion work of the adhesive sheet. In view of this problem, a waterproof construction technique that can prevent the expansion phenomenon while being excellent in workability has been developed, and is disclosed in Patent Document 2.

However, during construction, there is room for improvement including the following problems: a low-viscosity primer is likely to intrude into the long-fiber non-woven fabric layer, and the interfiber spaces are filled with the primer to become insufficiently ventilated and diffuse from the basal layer. The water vapor becomes difficult to dissipate to the outside.

Further, as another technique, Patent Document 3 has a development technique suggesting association. This technique discloses that a coating-type waterproof worksheet having irregularities is formed by imparting resin in a state of being substantially connected to at least one surface of a sheet having air permeability. The surface having the unevenness of the sheet is placed in a state of being attached to the substrate, and the primer is applied from above, and then the sheet and the substrate are further coated thereon, and the coating film waterproof material is further coated thereon, whereby the unevenness is communicated to External voids remain, but can be self-based The water vapor from the bottom layer is emitted to the outside.

This sheet, as shown in Fig. 1 of Patent Document 3, is a part of the air permeable sheet I, and the base layer is joined and integrated with the water repellency layer formed thereon, and is present in a lattice shape or a honeycomb shape. A portion of the linearly connected resin II is formed such that a gap is formed in a portion of the resin II so that the base layer and the water repellent layer are not joined, and water vapor or the like discharged from the base layer passes through the gap. The gap is released to the outside, and a considerable expansion preventing effect can be obtained.

However, in the sheet, the operation of forming the connected resin II while forming the uneven side on the back side is complicated and laborious, and the sheet is not problematic except for the workability of the coating work. When the primer is applied to the surface of the base layer, since the usual primer has a low viscosity, the primer penetrates into the back side of the connected resin II portion and fills the gap, resulting in loss of function as a vent hole. In the case, there is also a case where the expansion prevention effect as attempted is not obtained. Therefore, there is still room for improvement in the sheet and the waterproof construction method using the same.

One of the inventors has further suggested the sheet disclosed in Patent Document 4 as another technique. This technique is disclosed in which a non-woven fabric is bonded to one surface of a moisture impermeable metal film or a moisture impermeable metal vapor-deposited film by a lamination method or the like, and an adhesion effect is obtained by bonding the interface with the water repellent layer to improve adhesion. The method. Since the sheet is generally thin in consideration of cost or lightness of the above-mentioned moisture impermeable metal film or non-hygroscopic metal vapor deposited film, it is rolled up from the laying surface due to wind during field operation or When folding or the like, the workability is somewhat difficult, but the sheet and the fabric are bonded via an adhesive to improve the rigidity of the entire sheet.

However, there is a strong need to further improve the adhesion of the sheet. As a next improved technique, it has been developed to form a fabric using a flat yarn in a mesh-like reinforcing material, and to laminate a non-permeable metal film or a non-transparent metal film. A wet metal vapor-deposited film, which is easily processed on one side. In this case, when joining the base layer, it is extremely finely joined along any unevenness on the surface of the base layer, and although the joint force brings about an excellent effect, the sheet is wound into a cloth at the time of construction. In the state of the shape, when the cloth is pulled out, the cloth is stuck due to the adhesiveness, and the opening is not smooth. There is a problem that the deformation of the sheet or the peeling of the metal film occurs. . Under such circumstances, it is strongly required that the sheet for waterproof construction retains sufficient adhesion, and at the same time, no sticking occurs during the opening, no peeling of the metal film, and the opening of the sheet is an easy sheet.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 8-131936

[Patent Document 2] Japanese Laid-Open Patent Publication No. 13-090290

[Patent Document 3] Japanese Laid-Open Patent Publication No. 13-146821

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2006-22609

The present invention is intended to eliminate the problems of the above-described prior art, and an object of the present invention is to provide a sheet for waterproof construction which is suitable for a sheet of a waterproof construction portion of a building structure. It is thin and soft, and has good operability. The adhesion of the sheet during construction is strong, and the effect of temporary fixation is sufficient. Moreover, the sheet cloth during construction does not stick when it is opened, and the metal film is peeled off. .

The present inventors have repeated the intensive research on the above problems, and as a result, have achieved the present invention. As a means for solving the above problems, the constitution of the present invention is a sheet for waterproof construction, which is a sheet for waterproof construction, and is characterized in that a moisture-impermeable metal is formed in a plurality of holes 5 On one side of the film 2 or the non-permeable moisture-permeable metal deposition film, a mesh-like reinforcing fabric 6 which is easily processed is joined, and the mesh-shaped reinforcing fabric 6 includes a concave portion and a convex portion, and the concave portion is made of a thermoplastic synthetic resin. The yarn 3 is woven, and the projections are woven using a coarse yarn 4.

The mesh-like reinforcing fabric 6 is preferably plain weave or basket weave.

The thickness of the convex portion of the mesh-like reinforcing fabric 6 is preferably 1.2 to 10 times the thickness of the concave portion.

The mesh-like reinforcing fabric is preferably a thermoplastic synthetic resin flat yarn 3 and a coarse yarn 4 woven at a weave density of 4 to 15 strips/twist, and the coarse yarn 4 is woven at a density of 0.2 to 2.5 strips/twist. Weaving for warp and/or weft.

The thermoplastic synthetic resin is preferably a polyolefin.

When the sheet for waterproof construction is opened, the load is preferably 0.5 N/cm or less, especially 0.3 N/cm or less.

In the past, the mesh-like reinforcing fabric 6 was woven with the same thickness of the warp and the weft, but in the present invention, the convex portion forming portion of the fabric The sub-system is formed by weaving a coarse yarn having a diameter smaller than that of the flat yarn forming the concave portion forming portion, and achieves an excellent effect that is not observed in the past: a sheet-like sheet is formed, and no metal film is formed. The peeling or the adhesion of the cloth when it is opened is easy to pull out when the cloth is opened, and the adhesion after attachment is large at the time of construction.

The invention can provide a sheet for waterproof construction, which is thin and soft, has good operability, and has strong adhesion to the sheet during construction, and is temporarily fixed and has sufficient effect, and does not cause sticking when the sheet is opened and The peeling of the metal film is easy to handle.

1‧‧‧Waterproof construction sheet

2‧‧‧ Non-permeable metal film

3‧‧‧Flat yarn

4‧‧‧ coarse yarn

5‧‧‧ hole

6‧‧‧Mesh-like reinforcing fabric

7‧‧‧ mesh pores

8‧‧‧ concrete basement

9‧‧‧primer

10‧‧‧Waterproof layer

11‧‧‧Surface coating

12‧‧‧Digital dynamometer

13‧‧‧Free roll

14‧‧‧ bearing

Fig. 1 is a partially sectional perspective view showing a sheet for waterproof construction of the present invention.

Fig. 2 is a partially sectional perspective view showing a waterproof construction example of the sheet for waterproof construction using the present invention.

Fig. 3 is a partial cross-sectional perspective view showing an example of the load measurement of the sheet-like cloth for waterproof construction of the present invention.

[Formation of the Invention]

Hereinafter, the configuration of the sheet for waterproof construction of the present invention will be described in detail. The sheet 1 for waterproof construction of the present invention is a sheet which is formed by laminating a non-permeable metal film 2 and a mesh-like reinforcing fabric 6 having a plurality of holes 5 (opening portions) via an adhesive layer as described above. . The sheet is wound into a roll, and is rolled out from the roll when the sheet is laid, and the non-permeable metal film layer is formed. The surface is stretched on the surface of the substrate to be waterproofed. In this case, the adhesive is applied to the mesh-shaped reinforcing fabric of the opening portion, and the adhesive effect is applied to the base surface. Waterproofing is carried out by applying a waterproof material containing an urethane-based resin or the like from above. In the waterproof construction state, the apertured sheet of the present invention is joined to the base material layer of concrete or the like and the waterproof material layer coated thereon to be integrated into a columnar shape. On the other hand, in the non-apertured portion, since the base layer and the waterproof material layer are prevented from being directly joined by the presence of the non-permeable metal film, they are not joined and integrated, and this portion can be said to be only floating. State of state contact.

Further, in the sheet of the present invention, since a plurality of holes 5 are formed as described above, the base layer and the waterproof material layer are joined and integrated in the portion where the hole is formed, and the surface of the base layer is non-porous in the non-porous portion. In the non-bonded state, the moisture-permeable metal thin film 2 or the moisture-impermeable metal vapor-deposited film is in a state of being in a floating state, and the portion in the floating state is connected to the peripheral portion of the two interfaces, from the base. The gas component such as water vapor diffused in the layer moves horizontally from the joint surface and is released from the degassing cylinder to the atmosphere. Therefore, the gas component such as the water vapor does not accumulate at the joint interface, and the water repellency layer is swollen.

The size or the number of the holes 5 is not particularly limited. However, if the holes are large and the opening area ratio is too large, the joint strength between the base layer and the waterproof material layer is increased due to an increase in the area ratio of the integral joint portion. On the other hand, the area of the floating area for exhausting is narrowed, and the effect of preventing expansion is lowered. Conversely, if the hole is small and the opening area ratio is too narrow, the exhaust effect is increased, but on the other hand, the integral joint portion The area ratio is reduced, and the bonding strength between the base layer and the waterproof material layer becomes slightly insufficient. Therefore, for In order to ensure sufficient bonding strength between the base layer and the waterproof material layer, the gas component such as water vapor diffused to the boundary interface is efficiently diffused from the degassing tower to the outside to reliably prevent the expansion phenomenon. The opening area ratio of the pores formed in the sheet is 5% or more, preferably 10% or more and 70% or less, more preferably 20% or more and 60% or less.

Further, if the size of each of the holes 5 is too small, it is difficult to obtain a satisfactory integral joining force, and if the size is too large, the area for exhausting is narrowed, and the effect of preventing expansion is insufficient, and the size of each hole is small. The diameter in terms of a true circle is preferably from about 3 mm to about 100 mm, and particularly preferably from about 5 mm to about 20 mm.

The shape of the hole 5 is not particularly limited, and may be a polygonal shape such as a true circular shape, an elliptical shape, an egg shape, a square shape, a pentagon shape or a hexagonal shape, or an arbitrary shape, and may be a hole of a different shape as the case may be. Any combination is formed in plural. However, in order to prevent tearing or the like due to the applied tension or the like during operation or during construction, it is preferable to have a circular shape or an elliptical shape with a small notch effect.

Further, in the sheet 1 for waterproof construction of the present invention, the portion in contact with the water repellent layer is in a woven state, and the coating film of the water repellent layer penetrates well into the fabric to increase the joint strength.

The above-mentioned moisture impermeable metal thin film 2 used in the present invention is not particularly limited, and for example, a metal thin film such as aluminum, copper or stainless steel can be used. Further, the non-hygroscopic metal vapor-deposited film is not particularly limited, and for example, various kinds of individual or copolymerized resins or blends of polyolefin, polyester, polyamide, etc., such as polyethylene or polypropylene, may be used. A metal vapor-deposited film of aluminum, copper, or the like is deposited on a film such as a resin. Just for Any metal thin film or metal vapor deposited film can be used to prevent the intrusion of the components of the waterproof material layer into the direction of the base layer and to ensure the floating state. The thickness of the metal thin film or the metal vapor-deposited film is not particularly limited, but it is preferably about 3 to 200 μm, more preferably about 8 to 38 μm, in consideration of operability, cost, and the like.

Further, in the sheet 1 for waterproof construction of the present invention, in order to further improve the bonding force with the water repellent layer 10 or the degassing performance of water vapor or the like, the non-hygroscopic metal steam constituting the sheet is used. When the film is coated, it is also effective to make the aggregate material such as cerium sand. When the aggregate material is blended in the film material, fine irregularities are applied to the film by the aggregate, and the gap between the base layer and the film layer is widened, and not only the degassing performance is increased, but also the unevenness is also helpful. The adhesion to the waterproof material layer is improved. In the above-described sheet for waterproof construction 1 of the present invention, a mesh-like reinforcing fabric 6 is laminated on the surface of the film material via an adhesive. That is, the mesh-like reinforcing fabric 6 improves the strength of the entire sheet, particularly the tensile strength or the tear strength, and prevents breakage due to stretching tension or hooking during waterproof construction, and also exerts The effect of the joint integrity with the waterproof material layer 10 applied on the upper side of the sheet is further enhanced. Particularly in the present invention, the structure of the mesh-like reinforcing fabric 6 is characterized in that the mesh-like reinforcing fabric 6 is composed of a concave portion forming portion and a convex portion forming portion, relative to the sheet structure composed of fibers. The point. The recess is formed by weaving a flat yarn 3 containing a thermoplastic synthetic resin.

The recess referred to in the present invention means a portion which is woven only by the flat yarn and which is a thin portion of the fabric. On the other hand, the convex portion of the fabric as used in the present invention means that the apparent thickness is higher than the front. The portion of the thick yarn of the flat yarn forming the concave portion is formed.

Examples of the thermoplastic synthetic resin constituting the flat yarn include a polyester resin, a polyolefin resin such as polypropylene, a polyamide resin, a polyvinyl alcohol resin, an acrylic resin, or a copolymerization thereof. Various chemicals for resins or blends.

The flat yarn 3 preferably comprises a polyolefin.

In the flat yarn of the present invention, the thermoplastic synthetic resin is heated and melted in a cylinder, and the film is extruded from a die by a T-die method or a blow molding method, and the film is cut into a width after cooling. Small flat yarn. If necessary, extension processing or heat setting can also be carried out.

The flat yarn 3 is combined with the coarse yarn 4 and woven in a plain weave or twill weave structure by a well-known weaving machine. The woven fabric structure is not limited, but it is particularly preferable to form a woven fabric of a plain weave or an oblique weave.

The coarse yarn 4 can be used for warp yarns and/or weft yarns.

The convex portion of the mesh-shaped reinforcing fabric 6 is formed by weaving a coarse yarn thicker than the thickness of the flat yarn 3. The convex portion of the mesh-shaped reinforcing fabric 6 is formed by weaving the thick yarn 4 of 1.2 times or more, preferably 1.3 times or more the thickness of the flat yarn 3 constituting the concave portion.

The coarse yarn described in the present invention is not particularly limited as long as it has an apparent thickness larger than that of the flat yarn forming the concave portion, and for example, a synthetic fiber multifilament, a synthetic fiber monofilament, or a synthetic fiber may be used. Spinning of fibers, spinning comprising natural fibers, composite spinning, processed yarn, and the like. As long as the thickness formed is larger than the portion where the concave portion of the fabric is formed, it may be any of them, and of course, a flat yarn having a large thickness.

The diameter of the coarse yarn 4 is preferably in the range of 100 to 1000 μm. The thickness of the coarse yarn 4 is preferably 1.2 to 10 times the thickness of the flat yarn 3.

The flat yarn 3 is preferably woven at a weave density of 4 to 15 strips/inch, and the coarse yarn 4 is preferably woven at warp and/or weft at a weave density of 0.2 to 2.5 strips/inch.

In the past, the sheet was rolled into a cloth, and when the sheet was pulled out from the cloth during the construction work, the metal film peeled off, or the cloth adhered due to the adhesiveness of the adhesive, so it was difficult to pull. The problem is that since the aforementioned mesh-like reinforcing fabric 6 is composed of the concave portion forming portion and the convex portion forming portion, the contact area between the sheets can be reduced, so that no sticking or peeling occurs, during construction work. It is extremely easy to work from cloth.

When the sheet for waterproof construction is opened, the load is preferably 0.5 N/cm or less, especially 0.3 N/cm or less.

(Measurement of load when opening cloth)

As shown in Fig. 3, on the freely rotatable free roller 13, a digital force is attached to the center of the rolled fabric by winding a core of a cloth having a diameter of 15 cm at a width of 100 cm. The maximum load (N) at the time of opening of 30 cm was obtained at a drawing speed of 1 cm/sec.

The mesh-like reinforcing fabric 6 of the present invention preferably has a mesh density of 20 to 200, particularly preferably 40 to 120/square.

When the mesh-like reinforcing fabric 6 is subjected to an adhesive treatment, the mesh-like reinforcement exposed from the non-hygroscopic metal thin film 2 or the non-hygroscopic metal evaporated film is exposed on the side of the base surface. The adhesiveness of the fabric 6 is adhered to the surface of the substrate to be temporarily attached. The effect is to reduce the roll-up caused by the wind, and the construction workability is further increased. Moreover, the plurality of holes 5 formed in the cross-sectional direction of the sheet for waterproof construction of the present invention constitute a communication portion for directly joining and integrating the concrete base layer 8 and the waterproof material layer 10, so that the hole 5 The larger the opening area ratio, the higher the bonding force between the concrete base layer 8 and the waterproof material layer 10. On the other hand, in the portion other than the hole 5 of the sheet, the concrete base layer 8 and the waterproof material layer 10 are kept in non-contact by the moisture impermeable metal film 2 or the moisture impermeable metal film. The state can be said to be a non-contact floating state. Therefore, this portion remains as a ventilating space even in the state after the construction, and constitutes a venting portion for discharging the gas such as water vapor from the basal layer from the joint interface to the outside through the deaeration cylinder.

Further, the mesh-like reinforcing fabric 6 is subjected to an adhesive treatment, and the adhesion of the mesh-like reinforcing fabric 6 is applied to the surface of the base layer by the adhesion of the mesh-like reinforcing fabric 6, so that the so-called temporary fixing effect becomes important.

The thickness of the flat yarn 3 is preferably from 10 to 100 μm, more preferably from 10 to 50 μm.

The width of the flat yarn 3 is preferably from 0.5 to 3.0 mm, more preferably from 0.7 to 2.0 mm.

The woven density and the number of the spliced yarns of the flat yarn 3 are preferably 4 to 15 yarns/twist, more preferably 6 to 10 yarns/twist.

The thickness of the coarse yarn 4 is preferably from 100 to 1,000 μm, more preferably from 100 to 500 μm, in terms of an apparent diameter.

The number of the coarse yarns 4 is preferably 0.1 to 5.0 yarns per inch of warp yarns and/or weft yarns, more preferably 0.2 to 2.5 yarns per inch.

The sheet 1 for waterproof construction according to the present invention is configured as described above, but is used in a practical field at the time of waterproof construction, and as a realistic required characteristic, in the ventilation resistance test according to JASS-8 (1986 edition), 10 mmAq is required. The ventilation at the time of pressure was 170 cm ³ /min or more. Incidentally, this is because the ventilation amount is required to be "170 cm ³ /min or more" as a standard in the waterproof construction of a general concrete structure. Therefore, in order to exert the characteristics of the present invention more effectively, the ventilation amount is preferably 170 cm ³ /min or more, more preferably 300 cm ³ /min or more, and particularly preferably 600 cm ³ /min or more. Fig. 1 is a cross-sectional perspective view showing a main portion of a preferred sheet for waterproof construction of the present invention, showing a plurality of holes 5 formed in the moisture impermeable metal film 2, and an adhesive treatment thereon. The constructor of the mesh-like reinforcing fabric 6. Also shown is a mesh-shaped reinforcing fabric 6 in which a synthetic fiber coarse yarn 4 forming a convex portion and a thermoplastic synthetic resin flat yarn 3 forming a concave portion are formed by oblique weaving.

Further, in the present invention, since the reinforcing structure of the mesh-like reinforcing fabric 6 is laminated as described above, the strength and rigidity of the sheet itself are improved, and workability and the like are further improved, and the joint strength with the waterproof material layer is further enhanced. It is also elevated and thus preferred. Further, since the mesh-like reinforcing fabric 6 is subjected to an adhesive treatment, it is preferable that the sheet-like material 1 can be temporarily fixed by the adhesive force when it is laid on the surface of the base layer 2, thereby improving workability.

In carrying out the waterproof construction method of the present invention, the primer for improving the bonding force can be applied to the surface of the concrete base layer 8 containing concrete or plaster, for example, as shown in Fig. 2 (partial sectional perspective view). After drying, the sheet 1 for waterproof construction described above is spread out. Second, by self A predetermined amount of the waterproof material is applied thereon to form the waterproof material layer 10, and the surface coating film 11 is formed thereon, or the construction may be carried out according to the method.

Then, in a state where the waterproof material layer 10 is cured, the concrete base layer 8 and the waterproof material layer 10 are strongly joined and integrated in the hole 5 portion of the sheet for waterproof construction. Further, in the portion (non-opening portion) of the non-porous portion 5, the mesh-like reinforcing fabric 6 is interposed therebetween, and is firmly joined to the waterproof material layer 10, and on the other hand, the moisture-impermeable metal film 2 is formed. The lower side is kept in a non-adhesive state with the hardened primer 9, and since the non-porous portions are in communication, when gas components such as water vapor diffuse from the concrete base layer 8 to the floating portion, they are The gas component is diffused from the gap in the non-adherent state to the peripheral direction of the joint interface, and is released from the degassing tower to the atmosphere, thereby avoiding the problem that the gas component or the like is accumulated in the boundary portion and the waterproof material layer 10 is swollen.

The base material to which the above-described method of the present invention is applied is not limited to the type of the reinforced concrete or the stucco, and the material of the waterproof material layer 10 formed on the surface layer side of the sheet material of the present invention is not particularly advantageous. Restriction, the most common urethane-based resin, epoxy resin, unsaturated polyester resin, resin mainly composed of vinyl ester resin, or the like, or so-called inorganic compound in which cement or inorganic pigment is blended Stucco and other systems can be used. Moreover, the applicable place of the method of the present invention also covers a wide range, and can be applied to the roof or wall of the building, the roof, the balcony, the terrace, the ground, the open corridor, and the roof parking lot, etc., which are exposed to rain or water. A variety of parts.

Furthermore, in the present invention, since the non-permeable metal film 2 or the non-permeable metal vapor deposited film is used, it can be electromagnetic or eddy current type. The thickness of the water repellent layer 10 or the surface coating film 11 formed by the above-described method is measured by a film thickness meter. In other words, the non-hygroscopic metal film 2 or the metal deposition film exhibits electromagnetic properties corresponding to the strength of a magnetic force or an electric field, etc., via the waterproof material layer 10 and the surface coating film 11, and this phenomenon can be electromagnetically or The eddy current type film thickness meter directly measures the film thickness at an arbitrary position.

In this case, when a magnetic metal such as stainless steel is used as the metal, an electromagnetic film thickness gauge using electromagnetic induction can be used as the film thickness meter. Further, when a non-magnetic metal such as aluminum or copper is used, since the above-described electromagnetic type cannot be used, an eddy current type film thickness meter induced by a high-frequency electric field can be used.

This case is based on Japanese Patent Application No. 2013-171177 filed on August 21, 2013, and claims priority. The entire contents of the specification of Japanese Patent Application No. 2013-171177, filed on Aug. 21, 2013, are incorporated herein by reference.

[Examples]

The present invention will be more specifically described by the following examples, but the present invention is of course not limited by the following examples, and may be modified and implemented within the scope of the present invention, which is incorporated herein by reference. Within the technical scope of the invention.

(Example 1)

In a sheet in which a moisture-impermeable metal film made of an aluminum foil having a thickness of 7 μm and a polyester long-fiber nonwoven fabric are laminated (laminated) by a polyethylene laminate method, the opening area ratio of the pore portion in the cross-sectional direction of the laminate becomes a sheet surface area. In the 36% way, the holes of the rounded squares of the vertical angle of 10 mm × 10 mm are punched and opened. On the polyester long-fiber non-woven fabric side of the perforated sheet, a synthetic fiber flat yarn having a width of 1.1 mm and a thickness of 30 μm was used to make a synthetic fiber coarse yarn (440 dtex) at a density of 8 per strand and 7 densities. The polyethylene monofilament is coated with an adhesive material on a mesh-like reinforcing material sheet having a density of 0.8 and a width of 0.6, and is laminated to obtain a sheet for waterproof construction. The sheet had a total basis weight of 53 g/m ² .

The obtained sheet was taken up into a cloth having a width of 100 cm and a diameter of 15 cm, and the force applied when the cloth was opened was measured with a digital dynamometer. The measurement results are shown in Table 1. On the other hand, on the surface of the concrete base, a primer of 0.3 kg/m ² is applied, and then dried, and the sheet for waterproof construction obtained above is opened, and the side of the metal film is contacted with the primer film. Way to lay. No flaking or sticking of aluminum occurred in the sheet.

The sheet for waterproof construction to be laid is firmly adhered to the surface of the concrete base, and no sheet is rolled up or peeled off. Next, the product name "Sunsiral Super Rise" 1.0kg/m ² and "Sunsiral Super" 1.3kg/m ² manufactured by Mitsui Chemical Co., Ltd., which are coated with two layers of urethane waterproof material, are used as The urethane surface layer was coated with a trade name "Sunsiral Colortop" manufactured by Mitsui Chemicals Co., Ltd., 0.2 kg/m ² , thereby performing waterproof construction. The workability of the above water repellent treatment is very good. Compared with the conventional method of Patent Document 4, the construction time can be shortened by about 1 to 20%. Further, the water-repellent material layer of the obtained waterproof construction surface is strongly bonded and integrated with the base layer, and there is no swelling phenomenon in which a gas component such as water vapor accumulates at the joint interface.

(Comparative Example 1)

In addition to the use of a synthetic fiber coarse yarn, a thermoplastic synthetic resin flat yarn having a width of 1.1 mm and a thickness of 30 μm is used as a mesh-like reinforcing material having an elbow woven fabric with a density of 9 in the width and 8 in the horizontal direction. Example 1 was carried out in the same manner to obtain a sheet for waterproof construction. The obtained sheet was taken up into a cloth having a width of 100 cm and a diameter of 15 cm, and the force applied when the cloth was opened was measured with a digital dynamometer. As shown in Table 1, the pull-out load is significant and sticking occurs.

(examination of evaluation)

It can be provided in waterproof construction. On the construction surface, the sheet for waterproof construction does not cause the adhesion of the cloth or the peeling of the metal film. The self-moving and the on-site construction are good in operation and can be provided inexpensively. Sheet for construction. In particular, although the adhesion of the sheet during the construction is strong, the sheet-like cloth is easily pulled out, and the curling of the sheet in the work is difficult to occur, and the implementation of high-efficiency and high-quality waterproof construction is possible. Further, the maximum load pulled from the sheet-like cloth was compared with the conventional product (Comparative Example 1: 0.75 N/cm), and the product of the present invention (Example 1) obtained an average maximum load of 0.14 N from the sheet-like cloth. The minimum value of /cm.

Claims (6)

A sheet for waterproof construction, which is a sheet for waterproof construction, characterized by: a moisture impermeable metal film (2) or a moisture impermeable metal vapor deposition film formed with a plurality of holes (5) On one side of the joint, a mesh-like reinforcing fabric (6) which is easy to be processed is joined, and the mesh-shaped reinforcing fabric (6) includes a concave portion and a convex portion, and the concave portion is made of a thermoplastic synthetic resin flat yarn ( 3) For weaving, the convex portion is woven using a coarse yarn (4), and the thickness of the thermoplastic synthetic resin flat yarn (3) is 10 μm or more and 100 μm or less, and the width of the thermoplastic synthetic resin flat yarn (3). It is 0.5 mm or more and 3.0 mm or less. The sheet for waterproof construction of claim 1, wherein the mesh-like reinforcing fabric (6) is a plain weave or a basket weave. The sheet for waterproof construction according to claim 1, wherein the thickness of the convex portion is 1.2 to 10 times the thickness of the concave portion. The sheet for waterproof construction according to claim 1, wherein the thermoplastic synthetic resin flat yarn (3) and the coarse yarn (4) are woven at a weave density of 4 to 15 strands, and the coarse yarn is woven. (4) Weaving is used for warp yarns at a weave density of 0.2 to 2.5 strips/inch. A sheet for waterproof construction according to claim 1, wherein the thermoplastic synthetic resin is a polyolefin. The sheet for waterproof construction according to claim 1, wherein the load for waterproof construction is 0.5 N/cm or less.