JP2022085739A - Draining member, method for attaching draining member, and installation method of protection sheet for structure - Google Patents

Abstract

To provide a draining member having excellent adhesive property on a surface of a structure, allowing quick installation and easy return to a previous state before the installation, and providing an excellent appearance of the structure after being attached.SOLUTION: A draining member using a protection sheet for a structure provided at least with a polymer cement cured layer placed on a structure side and a resin layer placed on the polymer cement cured layer. The draining member comprises a draining part on which convex parts are continuously formed in a line shape by folding the polymer cement cured layer being an inner side, and an attachment part continuously attached on the structure through a corner part opposite to a folded part of the draining part.SELECTED DRAWING: Figure 3

Description

The present invention relates to a draining member, a method of attaching the draining member, and a method of constructing a structure protection sheet. More specifically, a drainage member for stopping water such as rainwater that is about to flow along the lower surface of a structure such as concrete such as an overhanging part of a bridge or under the eaves of a building, guiding it in the direction of gravity, and dropping the drainage member. The present invention relates to a method of attaching the above to the surface of the structure, and a method of constructing a structure protection sheet that covers the surface of the structure by using the drainage member and another structure protection sheet.

Conventionally, a groove-shaped drainage joint is provided on the lower surface of the overhang of the concrete structure, and the drainage joint cuts off the flow of water such as rainwater that is transmitted to the lower surface of the overhang of the concrete structure. Protects the walls and foundations of concrete from corrosion.
In addition, since repair work is carried out on concrete structures due to aging, it is difficult to provide draining joints in the repair work, so a procedure to attach a linearly shaped draining member to a place where water flows, such as the underside of an overhang. Was being done. Even for concrete structures without draining joints, the concrete structure was protected by attaching a draining member.

Various such draining members have been conventionally proposed. For example, it is known that the draining member is made of a resin such as polyvinyl chloride (PVC) or natural rubber, but for the purpose of further weight reduction. For example, Patent Document 1 discloses a draining member in which a foam is formed into a striatum and has a specific cross section.
The draining member disclosed in Patent Document 1 has a strength that can withstand the flow of rainwater even if it is made of a foam having a specific cross section and has flexibility, and is made of a foam, so that it is a conventional draining member. It is possible to reduce the weight as compared with the member.
Further, as a method of attaching the draining member to the concrete structure more firmly, for example, a method of providing an undercoat layer at a place where the draining member is attached, a method of embedding an anchor in the concrete structure and fixing the draining member using a bolt, etc. Are known.

Japanese Unexamined Patent Publication No. 2018-168582

However, the draining member as described in Patent Document 1 is attached to the lower surface of the overhang of the concrete structure via the adhesive layer, but the material constituting the draining member and the constituent material of the structure to be attached are attached. Therefore, the adhesiveness of the draining member may be insufficient.
In addition, the method of providing the undercoat layer has a problem that it takes days for the coating liquid for the undercoat layer to be applied, dried, and cured. In the method of fixing the draining member with bolts, a hole for embedding an anchor is used. It was necessary to install the bolts on the concrete structure, which not only took days for construction, but also made it difficult to return to the state before construction.
In addition, when a protective sheet that protects the surface is attached to a concrete structure together with the laying of the draining member, it takes time to construct because it is necessary to lay the draining member after attaching the protective sheet. It was a thing.
Further, since the conventional draining member is made of a material completely different from that of the concrete structure, there is a problem that the appearance of the structure after pasting is impaired.

The present invention has been made in view of the above-mentioned current situation, has excellent adhesiveness to the surface of the structure, can be quickly constructed and can be easily returned to the state before construction, and has an appearance of the structure after pasting. It is an object of the present invention to provide an excellent draining member, a method of attaching the draining member, and a method of constructing a structure protection sheet.

As a result of diligent studies on a drainage member provided in a place where water flows, such as the lower surface of an overhang of a concrete structure, the present inventors are configured by bending a structure protection sheet that can be used as a drainage member to protect the surface of a structure. We have found that the structure has excellent adhesion to the surface of the structure and can also improve the appearance of the structure, and have completed the present invention. And this technical idea can be applied even when it is a structure other than concrete through which water flows.

(1) The drainage member according to the present invention is a drainage member using a structure protective sheet including at least a polymer cement hardened layer provided on the structure side and a resin layer provided on the polymer cement hardened layer. The structure is continuously formed through a drainage portion in which the polymer cement hardened layer is bent so as to be inward and the convex portions are continuously formed into a linear shape, and a corner portion on the opposite side of the bent portion of the drainage portion. It is characterized by having a sticking portion to be stuck to.

According to the present invention, it is composed of a draining portion and a sticking portion having a specific layer structure, and the pasting portion is attached to the surface of the structure, so that the adhesiveness to the structure can be made extremely excellent.
Further, since the draining member according to the present invention is also a structure protection sheet having a draining portion, the effect of shortening the construction time, which is one of the effects of attaching the structure protection sheet to the surface protection of the concrete structure, is impaired. Never.
Further, since the drainage member is formed by bending the structure protection sheet used for protecting the surface of the structure, the degree of freedom in the shape of the drainage member is large, and the drainage member can be attached to the surface of the structure together with the attachment of the drainage member. By protecting the construction period, the construction period can be shortened, and since there is no need to drill holes for anchors on the surface of the concrete structure, it is easy to return to the state before construction, and the appearance integrated with the surface of the structure. The appearance is not spoiled by the structure in which the drainage member and the structure protection sheet are provided.

In the draining member according to the present invention, the draining portion may have a double structure in which the structure protective sheet is bent and the polymer cement hardened layers are brought into contact with each other.

According to the present invention, since the draining portion can be formed by laminating the polymer cement hardened layers of the structure protective sheet, the draining member according to the present invention can be easily obtained while maintaining a constant shape.

In the draining member according to the present invention, the draining portion may have a formation in which the thickness continuously or intermittently decreases from the corner portion toward the bent portion.

According to the present invention, the draining portion can be effectively drained by adjusting the inclination of the draining portion according to the condition of the water flowing through the structure.

In the draining member according to the present invention, the cross-sectional shape perpendicular to the length direction of the draining portion may be symmetrical with respect to the center line passing through the center in the width direction of the draining portion.

According to the present invention, when the draining member is attached to the structure, draining can be performed without any problem regardless of which side of the side surface of the draining portion is the side through which water flows.

(2) In the method of attaching the draining member according to the present invention, the attachment portion of the draining member according to the present invention is attached to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via the adhesive layer. It is characterized by having a pasting step.

According to the present invention, the drainage member according to the present invention can be attached to a place where a problem occurs due to the flow of water such as rainwater, such as the lower surface of an overhang of a structure or the boundary between an outer wall of a house and a foundation. Therefore, it is possible to effectively protect structures, foundations of houses, etc. from corrosion by water such as rainwater.

(3) In the method of constructing the structure protective sheet according to the present invention, the attachment portion of the drainage member according to the present invention is attached to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via the adhesive layer. Another structure protective sheet including at least a step of attaching to the polymer cement hardened layer and a resin layer provided on the polymer cement hardened layer is prepared, and the other structure is prepared via another adhesive layer. It has a step of attaching a polymer cement hardened layer of a material protection sheet to the surface of the structure, and the other structure protection sheet is continuous with the end portion of the attachment portion of the drainage member on the opposite side to the drainage portion. It is characterized in that it is attached to the structure so as to form a surface.

According to the present invention, after the drainage member according to the present invention is attached to a place where a problem occurs due to the flow of water such as rainwater, such as the lower surface of an overhang of a structure or the boundary between the outer wall of a house and a foundation, the other Since the structure protection sheet of the above is attached so as to form a continuous surface with the end opposite to the draining portion of the pasting portion of the draining member, the draining portion protects other structures with excellent adhesion to the structure. Since it is attached integrally with the sheet, the appearance is extremely excellent.
In addition, since the drainage member can be attached only to the part where drainage of the structure is required and the other surface of the structure is covered with another structure protection sheet, the positioning and attachment of the drainage member can be facilitated. It also facilitates surface protection of structures and foundations of houses.

According to the present invention, a draining member having excellent adhesiveness to the surface of a structure, quick construction and easy return to the state before construction, and excellent appearance of the structure after pasting. , A method of attaching the draining member using the draining member, and a method of constructing a structure protection sheet can be provided.

It is a perspective view which shows typically an example of the structure to which the draining member which concerns on this invention is attached. (A) and (B) are sectional views schematically showing an example of a structure protection sheet. (A) is a perspective view schematically showing an example of a draining portion of the draining member according to the present invention, and (b) to (d) are sectional views schematically showing a draining portion according to another configuration. be. (A) to (c) are perspective views schematically showing a state in which the draining member according to the present invention is attached to a structure. (A) and (B) are sectional views showing an example of a structure protection sheet. It is sectional drawing which shows an example of a structure protection sheet. It is a schematic diagram which shows an example of the mesh layer of the structure protection sheet. It is a schematic diagram which shows an example which embossed the resin layer of a structure protection sheet. It is explanatory drawing of the method of forming the uneven shape on the resin layer of a structure protection sheet.

Hereinafter, the draining member according to the present invention, the method of attaching the draining member using the draining member, and the method of constructing the structure protection sheet will be described with reference to the drawings. It should be noted that the present invention can be modified in various ways as long as it has the technical features thereof, and is not limited to the following description and the form of the drawings.

[Structure]
Examples of the structure to which the draining member according to the present invention is attached include a structure having an overhang 2 and a lower surface 2a, such as the structure 1 shown in FIG. In such a structure 1, when water such as rainwater is transmitted to the lower surface 2a of the overhang 2, there is a risk that water such as rainwater infiltrates into the wall surface and the foundation portion of the structure 1 and corrodes.
Further, for example, as a structure to which the draining member according to the present invention is attached, there is also a house in which a draining member is conventionally provided at the boundary between the outer wall and the foundation. If there is no drainer at the boundary between the outer wall and the foundation, water may infiltrate the foundation of the house and corrode the foundation of the house.
As described above, the draining member according to the present invention is attached to a place where problems such as corrosion may occur due to the intrusion of water, and the above-mentioned structure has corrosion or the like due to the intrusion of water. It is not particularly limited as long as it has a place where a problem may occur.

[Draining member]
The draining member according to the present invention is formed by using a structure protective sheet (hereinafter, also referred to as a protective sheet).
Like the draining member 11 shown in FIGS. 3A to 3D, the draining member according to the present invention is bent so that the polymer cement hardened layer of the protective sheet is on the inside, and the convex portions are continuously linear. It has a draining portion 17 formed in the water draining portion 17 and a sticking portion 18 that is continuously attached to the structure via a corner portion 17b on the opposite side of the bent portion 17a of the draining portion 17.

As shown in FIG. 3A, the draining portion 17 may have a double structure in which the structure protective sheet is bent and the polymer cement hardened layers are brought into contact with each other. Since the draining portion 17 can be formed by laminating the polymer cement hardened layers of the structure protective sheet, the draining member 11 according to the present invention can be easily obtained while maintaining a constant shape.

Further, as shown in FIGS. 3 (b) to 3 (d), the draining portion 17 has a formation in which the thickness is continuously or intermittently decreased from the corner portion 17b toward the bent portion 17a. You may. The draining portion 17 having such a structure can be effectively drained by adjusting the inclination of the draining portion 17 according to the condition of the water flowing through the structure.
The draining member 17 shown in FIG. 3B has an inverted triangular cross-sectional shape perpendicular to the length direction, and the thickness continuously changes from the corner portion 17b toward the bent portion 17a.
The draining member 17 shown in FIG. 3C has a semi-oval cross-sectional shape perpendicular to the length direction, and the thickness is intermittently changed from the corner portion 17b toward the bent portion 17a.
The drainer member 17 shown in FIG. 3D has an inverted triangular cross-sectional shape perpendicular to the length direction, draws a curve from the corner portion 17b to the bent portion 17a, and faces the bent portion 17a from the corner portion 17b. The thickness is continuously changing.

In the draining member 11 according to the present invention, the cross-sectional shape perpendicular to the length direction of the draining portion 17 has a center line passing through the center in the width direction of the draining portion (indicated by the center line AA in FIG. 3A). On the other hand, it is preferable that it is symmetrical. When the draining member 11 is attached to the structure, draining is possible without any problem regardless of which side of the side surface of the draining portion is the side through which water flows.
The draining member shown in FIGS. 3B to 3D also has a cross-sectional shape perpendicular to the length direction of the draining portion 17 and is symmetrical with respect to the center line passing through the center of the draining portion in the width direction.

The sticking portion 18 is continuously provided via the corner portion 17b on the opposite side of the bent portion 17a of the draining portion 17, and is a member to be pasted on the surface of the structure.
Although not shown, the surface of the attachment portion 18 on the side to be attached to the structure (upper surface in FIGS. 3A to 3D) is composed of a polymer cement hardened layer.
In FIGS. 3A to 3D, the pasting portion 18 is formed on the same plane, but the present invention is not limited to such a configuration, and the surface of the structure to be pasted is surfaced. A step may be provided or an angle may be provided as appropriate according to the state.

[Structure protection sheet]
The draining member according to the present invention described above is formed by using a protective sheet having a polymer cement hardened layer and a resin layer laminated on the polymer cement hardened layer.
In the structure to which the draining member according to the present invention is attached, another protective sheet may be attached to a place other than the place where the draining member is provided in order to protect the structure, and the present invention relates to the present invention. It is preferable that the protective sheet constituting the draining member and the other protective sheet have the same configuration. The appearance is extremely excellent because the draining portion can be integrally attached to the other protective sheet as well as the excellent adhesiveness to the structure.

More specifically, as shown in FIGS. 5 and 6, the protective sheet 10 comprises a polymer cement hardened layer 12 provided on the structure 21 side and a resin layer 13 provided on the polymer cement hardened layer 12. I have. Both the polymer cement hardened layer 12 and the resin layer 13 may be formed as a single layer or as a laminated layer, respectively.
In addition, although the following description of the protective sheet will be described as the case of the other protective sheet described above, it also corresponds to the sticking portion of the draining member according to the present invention.

The protective sheet 10 preferably has a water vapor permeability of 10 to 50 g / m ^2.day . Since the polymer cement hardened layer 12 contains a cement component, it can be expected to have a certain degree of water vapor permeability, but the resin layer 13 provided on the polymer cement hardened layer 12 results in inferior water vapor permeability. Presumably, since the water vapor transmittance of the entire protective sheet 10 is within a predetermined range, the water vapor inside can be appropriately permeated after being attached to a structure such as concrete and discharged to the outside, so that swelling occurs. It becomes easy to suitably prevent the above, and further, it becomes easy to prevent the deterioration of the adhesiveness. Another merit that the water vapor permeability is in a predetermined range is that the structure that easily allows steam to escape tends to suppress the corrosion of metals (for example, reinforcing bars) in the structure. Further, when the protective sheet 10 is applied to the structure on a rainy day, the surface of the structure gets wet and the structure itself contains water, but the protective sheet 10 permeates the water vapor. Having a ratio makes it easier for moisture that has permeated the structure to escape to the outside after construction (after manufacturing the reinforced structure). Further, the concrete immediately after hardening contains a large amount of water inside, and the protective sheet 10 can be suitably used for such concrete.
Another advantage of the protective sheet 10 is that the water vapor permeability can be controlled, so that the protective sheet 10 can be attached to the surface of the structure even when the cement of the structure is not hardened, for example. That is, when water is rapidly removed when the cement is molded and hardened, the cement tends to become porous and the strength of the structure tends to decrease. However, by attaching the protective sheet 10 to the cement before hardening, the cement tends to become porous. It is possible to control the speed of water removal at the time of curing, and there is also an advantage that it becomes easy to avoid the above-mentioned porous structure.
If the water vapor permeability is less than 10 g / m ^2.day , the protective sheet 10 cannot sufficiently permeate water vapor, and the swelling phenomenon after being attached to the structure cannot be prevented and the adhesiveness is poor. It can be inadequate. If it exceeds 50 g / m ^2.day , the speed of water removal during the curing of the cement becomes excessively high, and there is a possibility that the cured product of the cement becomes porous. The preferable range of the water vapor permeability is 20 to 50 g / m ^2.day .
The protective sheet 10 having such a water vapor transmittance can be obtained, for example, by using a polymer cement cured layer 12 described later and a resin having a predetermined water vapor permeability for the resin layer 13.
The water vapor permeability in the present invention can be measured by the method described later.

Further, it is preferable that the protective sheet 10 has a sulfuric acid penetration depth of 0.1 mm or less after being immersed in a 5% sulfuric acid aqueous solution for 30 days while being wrapped in a basic building concrete block. If the sulfuric acid penetration depth exceeds 0.1 mm, the sulfuric acid resistance of the protective sheet 10 becomes insufficient, and it may not be possible to use it for a structure in which corrosion occurs due to sulfuric acid. A more preferable upper limit of the sulfuric acid penetration depth is 0.01 mm.
The sulfuric acid penetration depth can be measured by a known method.

Further, the protective sheet 10 may be used in a state where two or more layers are stacked. Since the structure protected by the protective sheet 10 can be further protected, for example, when two protective sheets are attached side by side, another protection is provided so as to cover the boundary between these protective sheets. Sheets can be pasted.
Since the polymer cement hardened layer contains cement and a resin component, the protective sheet exhibits suitable adhesiveness to the resin layer of the protective sheet previously attached to the structure. Therefore, the protective sheets can be suitably used in a stacked state.

In the protective sheet 10, the tear load measured according to the description of the tear load test item in JIS K 6781 is preferably 3 to 20. By having such a tearing load, it is possible to prevent a chain collapse or collapse because the protected structure is appropriately torn when it collapses or collapses. In addition, even when it becomes necessary to remove only a part of the protected structure, it is possible to tear the structure at any place, so that the part of the structure can be removed. If the tear load is less than 3N, it becomes difficult to protect the structure itself, and if it exceeds 20N, tearing at an appropriate timing may not occur. A more preferable range of the tear load is 5 to 15N.
The tear load can be measured by a known method.

The protective sheet 10 preferably has a thickness distribution of ± 100 μm or less. When the thickness distribution of the protective sheet 10 is within the above range, a layer having a small thickness variation can be stably provided on the surface of the structure 21 even if the worker is not a skilled worker.
The polymer cement hardened layer 12 provided on the structure 21 side has excellent adhesion to the structure 21, and the resin layer 13 provided on the polymer cement hardened layer 12 has a predetermined water vapor permeability. It is possible to easily impart excellent properties such as waterproofness, salt shielding property, and neutralization prevention property.
Further, since the protective sheet 10 can be mass-produced by the coating process and the drying process on the production line of the factory, it is possible to reduce the cost, reduce the work period at the site, and realize long-term protection of the structure. As a result, the construction period for bonding to the surface of the structure 21 can be reduced, and the structure 21 can be protected for a long period of time.

(Polymer cement hardened layer)
As shown in FIG. 5, the polymer cement hardened layer 12 is a layer arranged on the structure 21 side. The polymer cement hardened layer 12 may be, for example, a single layer that is not overcoated as shown in FIG. 5 (A), or may be a laminated layer that is overcoated as shown in FIG. 5 (B). Whether to use a single layer or a laminated layer is arbitrarily set in consideration of the overall thickness, imparting function (followability, adhesiveness to a structure, etc.), factory production line, production cost, etc., for example, a production line. If the thickness is too short to reach a predetermined thickness with a single layer, it can be formed by overcoating two or more layers. In addition, for example, in the case of two layers of recoating, the second layer is formed after the first layer is dried.
Further, the polymer cement hardened layer 12 may have a structure in which layers having different properties are laminated. For example, by forming a layer having a higher proportion of the resin component on the resin layer 13 side, the layer having a high resin component adheres to the resin layer, and the layer having a high cement component adheres to the concrete structure. It tends to have excellent properties.

The polymer cement hardened layer 12 is obtained by applying this paint, which is a paint made of a resin (resin component) containing a cement component.
Examples of the cement component include various cements, limestones containing a component composed of calcium oxide, and viscosities containing silicon dioxide. Among them, cement is preferable, and examples thereof include Portland cement, alumina cement, early-strength cement, and fly ash cement. Which cement is selected is selected according to the characteristics that the polymer cement hardened layer 12 should have, and is selected in consideration of, for example, the degree of followability to the concrete structure 21. In particular, Portland cement defined in JIS R5210 can be preferably mentioned. Further, in order to adjust the workability or the physical properties of Portland cement after construction, a known composition in which silicon dioxide, aluminum oxide, aluminum oxide, titanium oxide or the like is further added to Portland cement can also be used.

Examples of the resin component include acrylic resin, acrylic urethane resin, acrylic silicon resin, fluororesin, flexible epoxy resin-based, polybutadiene rubber-based, acrylic resin exhibiting rubber properties (for example, synthetic rubber having acrylic acid ester as a main component) and the like. Can be mentioned. Such a resin component may be the same as the resin component constituting the resin layer 13 described later.
Further, as the resin component, any of a thermoplastic resin, a thermosetting resin, and a photocurable resin may be used. The wording "curing" of the polymer cement cured layer 12 does not mean that the resin component is limited to a resin that cures and polymerizes, such as a thermosetting resin or a photocurable resin, but when it becomes the final layer. It is used in the sense that a material that hardens (hardens as a layer) may be used.

The content of the resin component is appropriately adjusted according to the material used and the like, but is preferably 10% by mass or more and 40% by weight or less with respect to the total amount of the cement component and the resin component. If it is less than 10% by weight, the adhesiveness to the resin layer 13 may be lowered and it may be difficult to maintain the polymer cement hardened layer 12 as a layer. If it exceeds 40% by weight, it may be difficult to maintain the polymer cement hardened layer 12 as a layer. Adhesion may be inadequate. From the above viewpoint, the more preferable range of the content of the resin component is 15% by weight or more and 35% by weight or less, but more preferably 20% by weight or more and 30% by weight or less.

The paint for forming the polymer cement hardened layer 12 is a coating liquid in which a cement component and a resin component are mixed with a solvent. The resin component is preferably an emulsion. For example, an acrylic emulsion is a polymer fine particle obtained by emulsion polymerization of a monomer such as an acrylic acid ester using an emulsifier. Acrylic acid-based polymer emulsion obtained by polymerizing a weight mixture in water containing a surfactant can be preferably mentioned.
The content of the acrylic acid ester or the like constituting the acrylic emulsion is not particularly limited, but is selected from the range of 20 to 100% by mass. Further, the surfactant is also blended in an amount as required, and the amount is not particularly limited, but a surfactant to the extent of forming an emulsion is blended.

The polymer cement hardened layer 12 is coated with a coating liquid on a release sheet or a resin layer 13 described later formed on a release sheet 14 as shown in FIG. 5, followed by a solvent (preferably water). It is formed by drying and removing. For example, a mixed composition of a cement component and an acrylic emulsion is used as a coating liquid to form a polymer cement hardened layer 12. The resin layer may be formed on the release sheet after the polymer cement cured layer 12 is formed, but as shown in FIG. 5, the polymer cement is cured after the resin layer 13 is formed on the release sheet. The layer 12 may be formed. In the present invention, for example, the release sheet is embossed or matted (concavo-convex shape is imparted), and then the resin layer 13 (whether it is a single layer or two or more layers) is formed on the release sheet. It may be formed in the order of the polymer cement hardened layer 12 (which may be a single layer or two or more layers), and is protected by using a method of imparting design to the resin layer 13. Sheet 10 may be manufactured.

In the present invention, the polymer cement hardened layer 12 may have a mesh layer described later because it can impart high performance.
When having a mesh layer, for example, the resin layer 13 is coated on a release sheet, a coating liquid for polymer cement is applied after drying, the mesh layer is bonded in a wet state before drying, and then dried.
After that, a coating liquid for polymer cement is further applied to the surface to which the mesh layer is bonded and dried to obtain a protective sheet 10 in which the mesh layer is present in the polymer cement hardened layer 12.
Further, the resin layer 13 is coated on the release sheet, the coating liquid for polymer cement is applied after drying, the mesh layer is bonded in a wet state before drying, and then the mesh is not dried. It is also possible to obtain a protective sheet 10 in which the mesh layer is present in the polymer cement hardened layer 12 by further applying a coating liquid for polymer cement to the surface to which the layers are bonded and then drying the whole.

The thickness of the polymer cement hardened layer 12 is not particularly limited, but the usage pattern of the structure 21 (road bridges, tunnels, river facilities such as water gates, sewer pipes, civil engineering structures such as harbor quays, etc.), aging degree, shape, etc. Arbitrarily set by. The specific thickness of the polymer cement hardened layer 12 can be, for example, in the range of 0.5 mm to 1.5 mm. As an example, when the thickness is 1 mm, the thickness variation is preferably within ± 100 μm. This level of accuracy cannot be achieved by on-site coating, and can be achieved by stable coating on the factory production line. Even if it is thicker than 1 mm, the thickness variation can be within ± 100 μm. Further, when it is thinner than 1 mm, the thickness variation can be further reduced.

Due to the presence of the cement component, the polymer cement hardened layer 12 is more easily permeable to water vapor than the resin layer 13 described later. The water vapor transmittance at this time is, for example, about 10 to 50 g / m ^2.day . Further, the cement component has good compatibility with, for example, the cement component constituting the concrete, and can be excellent in adhesion to the concrete surface. Further, since the polymer cement hardened layer 12 can impart stretchability, it can follow the change of concrete even when the structure 21 is cracked or expanded.

(Mesh layer)
The mesh layer is preferably present inside the polymer cement hardened layer 12 as shown in FIG. The mesh layer 16 may be arranged on the surface of the polymer cement cured layer 12 (the surface where the polymer cement cured layer 12 and the resin layer 13 are in contact with each other or the surface opposite thereof). Above all, it is preferable that the mesh layer 16 is embedded inside the polymer cement hardened layer 12. Since the mesh layer 16 is embedded inside the polymer cement hardened layer 12, the contact area between the mesh layer 16 and the polymer cement hardened layer 12 is increased, and it becomes easy to improve the adhesive strength between the two, and the polymer cement. It becomes easy to secure the strength of the entire hardened layer 12.

In the present invention, it is preferable that the mesh layer 16 is impregnated with a material (for example, a cement component or a resin component) constituting the polymer cement cured layer 12.
The state in which the material constituting the polymer cement hardened layer 12 is impregnated in the mesh layer 16 means that the material constituting the polymer cement hardened layer 12 is filled between the fibers constituting the mesh layer 16. This means that such an impregnated state makes it easy to make the adhesive strength between the mesh layer 16 and the polymer cement hardened layer 12 extremely excellent. Further, the interaction between the mesh layer 16 and the material of the polymer cement hardened layer 12 tends to be stronger, and the strength of the protective sheet 10 tends to be improved.

As shown in FIG. 7, the mesh layer 16 has a structure in which fibers of warp and weft are arranged in a lattice pattern.
The fiber is composed of at least one fiber selected from the group consisting of, for example, polypropylene fiber, vinylon fiber, carbon fiber, aramid fiber, glass fiber, polyester fiber, polyethylene fiber, nylon fiber and acrylic fiber. Of these, polypropylene fibers and vinylon fibers can be preferably used.
The shape thereof is not particularly limited, and in addition to the biaxial braid as shown in FIG. 7, any mesh layer 16 such as a triaxial braid can be used.

It is desirable that the mesh layer 16 has a linear density of 0.2 to 8.0 lines / cm and a line pitch of 50 mm to 1.2 mm.
If the line pitch is less than 1.2 mm, the bonding of the polymer cement hardened layers 12 above and below the mesh layer 16 may be insufficient, and the surface strength of the protective sheet 10 may be insufficient. Further, if the line pitch exceeds 50 mm, the surface strength of the protective sheet 10 is not adversely affected, but the tensile strength may be weakened.
In the protective sheet 10, the tensile strength and the surface strength have a trade-off relationship, and the mesh layer 16 suitable for application to the present invention has a line pitch in the range of 50 mm to 1.2 mm.

The mesh layer 16 may have a size that covers the entire surface of the polymer cement hardened layer 12 when viewed from the upper surface side of the polymer cement hardened layer 12, or may be smaller than the polymer cement hardened layer 12. That is, the area of the mesh layer 16 in a plan view may be the same as or smaller than the area of the polymer cement hardened layer 16 in a plan view, but the area of the mesh layer 16 in a plan view is a polymer. It is preferably 90% or more, more preferably 95% or more, based on the plan-view area of the cement hardened layer 12. If it is less than 90%, the strength of the protective sheet 10 may be insufficient, and the strength may vary. The plane viewing area of the mesh layer 16 and the like can be measured by a known method.

(Resin layer)
As shown in FIG. 5, the resin layer 13 is a layer that is arranged on the opposite side of the structure 21 and appears on the surface. The resin layer 13 may be, for example, a single layer as shown in FIG. 5A, or may be a laminated layer consisting of at least two layers as shown in FIG. 5B. Whether to use a single layer or a laminated layer takes into consideration the overall thickness, imparting function (waterproofness, salt insulation, neutralization prevention, water vapor permeability, etc.), factory production line length, production cost, etc. For example, when the production line is short and a single layer does not have a predetermined thickness, two or more layers can be overcoated to form the product. In the recoating, the second layer is applied after the first layer is dried. The second layer is then dried.

The resin layer 13 is a paint that has flexibility and can follow cracks and cracks generated in concrete, and can form, for example, a resin layer having excellent waterproofness, salt-shielding property, neutralization-preventing property, and water vapor permeability. Obtained by painting. As the resin constituting the resin layer 13, acrylic resin exhibiting rubber properties (for example, synthetic rubber having acrylic acid ester as a main component), acrylic urethane resin, acrylic silicon resin, fluororesin, flexible epoxy resin, polybutadiene rubber and the like are used. Can be mentioned. This resin material may be the same as the resin component constituting the polymer cement hardened layer 12 described above. In particular, a resin containing an elastic film-forming component such as rubber is preferable.

Of these, the acrylic resin exhibiting rubber properties is preferably made of an aqueous emulsion of an acrylic rubber-based copolymer in that it is excellent in safety and coatability. The proportion of the acrylic rubber-based copolymer in the emulsion is, for example, 30 to 70% by mass. The acrylic rubber-based copolymer emulsion can be obtained, for example, by emulsion polymerization of the monomer in the presence of a surfactant. As the surfactant, any of anionic, nonionic and cationic surfactants can be used.

The paint for forming the resin layer 13 is prepared by preparing a mixed coating liquid of a resin composition and a solvent, applying the coating liquid on the release sheet 14, and then drying and removing the solvent. The resin layer 13 is formed. The solvent may be water or an aqueous solvent, or may be an organic solvent such as xylene / mineral spirit. In the examples described later, an aqueous solvent is used, and the resin layer 13 is made of an acrylic rubber composition. The order of the layers formed on the release sheet 14 is not limited, and may be, for example, the order of the resin layer 13 and the polymer cement cured layer 12 as described above, or the polymer cement cured layer 12 and the resin layer. It may be in the order of 13. However, as shown in Examples described later, it is preferable to form the resin layer 13 on the release sheet and then form the polymer cement cured layer 12.

The thickness of the resin layer 13 is arbitrarily set according to the usage pattern of the structure 21 (road bridge, tunnel, river management facility such as water gate, civil engineering structure such as sewer pipe, harbor quay, etc.), degree of aging, shape, etc. Ru. As an example, the thickness is preferably any one in the range of 50 to 150 μm, and the thickness variation is preferably within ± 50 μm. This thickness of accuracy cannot be achieved by on-site coating, and can be stably achieved on the production line of a factory.

The resin layer 13 has high waterproofness, salt-shielding property, and neutralization-preventing property, but it is preferable that water vapor permeates. The water vapor transmittance at this time is preferably, for example, about 10 to 50 g / m ^2.day . By doing so, the protective sheet 10 can be provided with high waterproofness, salt-shielding property, neutralization prevention property, and predetermined water vapor permeability. Further, by being composed of the same kind of resin component as the polymer cement hardened layer 12, it is possible to have good compatibility with the polymer cement hardened layer 12 and excellent adhesion. The water vapor permeability was measured in accordance with JIS Z0208 "Method for testing moisture permeability of moisture-proof packaging material".

Further, the resin layer 13 may contain a pigment from the viewpoint of being able to have abundant color variations of the protective sheet 10.
Further, the resin layer 13 may contain an inorganic substance. By containing an inorganic substance, scratch resistance can be imparted to the resin layer 13. The inorganic substance is not particularly limited, and examples thereof include conventionally known materials such as metal oxide particles such as silica, alumina, titania (titanium oxide), and ferric oxide. In addition, carbon black may be contained in order to give a unique design to the outermost layer after construction.

Further, designability may be imparted to any one surface of the resin layer 13. Here, either one surface means the surface on the polymer cement hardened layer 12 side or the opposite surface. It is preferable that the design is provided with an uneven shape or is imparted by printing. The treatment for imparting the design is not particularly limited, and for example, embossing or matting treatment (matte treatment), mirror treatment (gloss treatment), or printing on the surface of the resin layer 13 applied to the surface of the resin layer 13. Is preferably used.

The embossing treatment is a treatment for imparting a desired uneven shape to the surface of the resin layer 13, and for example, the embossing roll 80 having irregularities corresponding to the irregularities to be imparted to the roll surface as shown in FIG. 8 has not been formed. The cured resin layer 13'is sent out, the surface of the uncured resin layer 13'is pressed against the surface, and the unevenness of the embossed roll 80 is transferred to the surface of the uncured resin layer 13', and then the uncured resin layer 13'is cured. A method of forming the resin layer 13 can be mentioned.
The shape of the unevenness of the embossed roll is not particularly limited, and may be appropriately selected depending on the desired design.
As for other conditions of the embossing treatment, conventionally known conditions can be adopted as the embossing treatment for the resin film.
Further, the method of forming the uneven shape on the surface of the resin layer 13 is not limited to the embossing treatment, and other methods may be used, and so-called matte processing can be performed by a method similar to the embossing treatment. Is.
For example, as shown in FIG. 9, a dimple-shaped (hemispherical) uneven shape is provided on the release sheet 14 to a depth of about 1 micron, and the uncured resin layer 13'is coated on the dimple-shaped (hemispherical) uneven shape, and then uncured. When the resin in the cured resin layer 13'is cured, the polymer cement layer 12 is further provided, and then the release sheet 14 is peeled off, a protective sheet 10 having a mat-like design formed on the surface of the resin layer 13 is obtained. be able to.

The method for printing the surface of the resin layer 13 is not particularly limited, and for example, a solvent, a binder resin (urethane-based, acrylic-based, nitrocellulose-based, rubber-based, etc.), various pigments, extender pigments, and additives (plasticizer) are used. Printing may be performed with an ink obtained by adding an agent, a desiccant, a stabilizer, etc.).
The pattern to be printed is not particularly limited, and characters, patterns and the like are appropriately selected according to the design to be given to the structure.
In addition, examples of the printing method of the ink include known printing methods such as offset printing, gravure printing, flexographic printing, silk screen printing, and inkjet printing.
In order to improve the adhesion to the resin layer 13, the surface of the resin layer 13 may be subjected to a treatment such as corona treatment or ozone treatment before printing the ink.
As an example, the protective sheet 10 is formed by providing an embossed or matte uneven surface on the surface of the release sheet, forming a design on the uneven surface by printing, and further providing a resin layer and a polymer cement layer in this order. Can be done.
Further, it is also preferable to interpose a transparent resin layer such as acrylic silicon at the interface between the release sheet and the uneven surface.
In that case, since a resin layer such as acrylic silicon is present on the outermost surface after protecting the structure, it greatly contributes to the improvement of weather resistance.

The design may be imparted to at least one surface of the resin layer 13, for example, the surface of the resin layer 13 opposite to the polymer cement hardened layer 12 side (the surface of the protective sheet 10). When applied to the surface or the surface of the resin layer 13 in contact with the release sheet 14), a more favorable design property can be imparted, and particularly when an uneven shape is imparted by embossing or the like, the design property has an excellent three-dimensional effect. Can be granted.
Further, when the surface of the resin layer 13 on the polymer cement hardened layer 12 side is imparted with designability, the imparted design does not come into direct contact with the outside air, so that excellent designability can be maintained for a long period of time. When the embossing treatment is performed, a flat structure can be obtained on the surface of the resin layer 13 while imparting a three-dimensional design. In this case, the resin layer 13 may be formed to be transparent or translucent.
Further, in the protective sheet 10, a structure in which a printed layer is provided on the surface of the resin layer 13 on the polymer cement hardened layer 12 side and an uneven shape is provided on the surface on the opposite side of the resin layer 13 by embossing or the like is also suitable. It is possible to simultaneously obtain an excellent design property due to the printed layer and a three-dimensional effect due to the uneven shape of the embossing treatment, and it is also possible to impart functions such as antiglare, soundproofing and antifouling properties due to the uneven shape.
When the surface of the resin layer 13 opposite to the polymer cement hardened layer 12 side is provided with an uneven shape, the surface of the resin layer 12 of the protective sheet 10 has irregularities. Since the adhesion step and the shaping step used are performed, the protective sheet 10 can be attached to the structure in a desired surface state.

Further, the resin layer 13 may contain a known antifouling agent. Since the protective sheet 10 is usually used for repairing structures such as concrete structures installed outdoors, the resin layer 13 is often contaminated, but the protective sheet 10 is contaminated by containing an antifouling agent. Can be suitably prevented. The antifouling agent is not particularly limited, and examples thereof include conventionally known materials.
Further, the resin layer 13 may contain additives that can impart various functions. Examples of such additives include cell roll nanofibers and the like.

The produced protective sheet 10 may be provided with a release sheet 14 on one surface of the polymer cement cured layer 12 and the resin layer 13. The release sheet 14 can protect the surface of the protective sheet 10 at the construction site, for example, and at the construction site, the release sheet 14 is placed on the target structure 21 (or via the undercoat layer 21 or the adhesive layer 23). ) By adhering the protective sheet 10 with the release sheet 14 attached and then peeling off the release sheet 14, workability at the construction site is greatly improved. The release sheet 14 is preferably a process paper used in the production process of the protective sheet 10 or a PET sheet that has undergone a mold release treatment.

The material of the process paper used as the release sheet 14 is not particularly limited as long as it is a conventionally known one used in the manufacturing process. For example, like the known process paper, a laminated paper having an olefin resin layer such as polypropylene or polyethylene or a layer containing silicon can be preferably mentioned. The thickness is not particularly limited, but can be any thickness, for example, about 50 to 500 μm, as long as it is not a thickness that hinders handling in manufacturing and construction.

The protective sheet 10 described above can protect the structure 21 for a long period of time. In particular, the protective sheet 10 is provided with performance according to the characteristics of the structure 21 so as to follow the cracks and expansions generated in the structure 21 and to prevent deterioration factors such as water and chloride ions from infiltrating the structure 21. It is possible to have a permeability that can discharge water and deterioration factors in the structure. Since such a protective sheet 10 can be manufactured at a factory, it is possible to mass-produce high-quality products having stable characteristics. As a result, construction can be carried out without relying on the skills of craftsmen, and the construction period can be shortened and labor costs can be reduced.

[Manufacturing method of draining member]
The draining member according to the present invention can be obtained by bending the above-mentioned protective sheet so that the polymer cement hardened layer is on the inside and forming the convex portions into a continuous linear shape.
When the draining portion has a shape having the double structure shown in FIG. 3A, for example, first, two points to be the bent portions 17a are determined on the polymer cement hardened layer of the protective sheet, and the two bent portions 17a are formed. Place a thin plate such as a ruler on the straight line to tie and bend the protective sheet so that the polymer cement hardened layer is on the inside to give a crease.
Next, when the folds are formed to some extent, the thin plate is removed, and if necessary, the opposing polymer cement hardened layers are adhered to each other via an adhesive layer described later to form the draining portion 17.
It should be noted that, at the factory where the protective sheet is manufactured, a crease that serves as a draining part of the protective sheet is prepared in advance, and the shape as shown in FIG. If necessary, the polymer cement cured layers facing each other may be adhered to each other via the adhesive layer to form the draining portion 17.

Next, the thin plate is applied to the opposite side of the bent portion 17a of the draining portion 17 from the resin layer side, and the protective sheet is bent so that the resin layer is on the inside to form one corner portion 17b and one pasted portion 18. To mold.
A thin plate is applied again on the resin layer on the opposite side of the bent portion 17a of the draining portion 17 and on the opposite side of the previously molded pasting portion 18, and the protective sheet is bent so that the resin layer is on the inside and the other corner. The portion 17b is formed, the pasting portion 17b is formed, and the draining member according to the present invention is formed.
At this time, one sticking portion 18 and the other sticking portion 18 may be formed so as to form the same plane, but may be formed so as not to form the same plane, and the surface state of the structure to be attached may be formed. It is adjusted appropriately according to.
Further, the angle at which the protective sheet is bent when forming the one corner portion 17b and the other corner portion 17b may be 90 ° as shown in FIG. 3A, and may be an acute angle or a twist. The angle may be an acute angle, and the angle at which the protective sheet is bent when forming one corner portion 17b and the other corner portion 17b may be the same or different, and the structure to be attached may have an acute angle. It is adjusted appropriately according to the surface condition.
The protective sheet described above may be bent without using a thin plate as long as it can be bent accurately, and may be performed by a known method.

Further, when the draining portion has a shape in which the thickness continuously or intermittently decreases from the corner portion shown in FIGS. 3 (b) to 3 (d) toward the bent portion, for example, a mold having the shape of each draining portion is used. Prepare and apply the polymer cement hardened layer of the protective sheet to the apex to be the bent portion 17a of the mold, and bend the protective sheet along the side surface of the mold.
Next, the protective sheet is bent so that the resin layer side is inside at the portion corresponding to the corner portion 17b, and the sticking portion 18 is formed. As a method of bending the protective sheet at the time of molding the sticking portion 18, the same method as in the case of having the above-mentioned double structure can be mentioned. It is preferable that they are adhered to each other.

[How to attach the drainer member]
The method of attaching the drainage member according to the present invention is a step of attaching the attachment portion of the drainage member according to the present invention to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via an adhesive layer. It is characterized by having.

The structure is the above-mentioned one, and in the present invention, a portion of the draining member according to the present invention is attached to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via an adhesive layer. Paste.
Examples of the material of the structure to which the attachment portion of the draining member according to the present invention is attached include concrete.
The concrete is generally obtained by casting and curing a cement composition containing at least a cement-based inorganic substance, an aggregate, an admixture and water. Such concrete is widely used as civil engineering structures such as road bridges, tunnels, river management facilities such as water gates, sewer pipes, and harbor quays. In the present invention, by applying the draining member to the concrete structure, it is possible to follow the cracks and expansions that occur in the concrete, and the deterioration factors such as water and chloride ions do not permeate into the concrete, and the water in the concrete is steamed. There is a special advantage that it can be discharged as concrete. It should be noted that such an effect can also be obtained with the above-mentioned other protective sheets.

(Adhesive layer)
The adhesive layer preferably contains a curable resin material.
The curable resin material is not particularly limited as long as it has the property of being cured by heat curing, photocuring or other methods to form a resin, but an epoxy compound can be preferably used. In this case, the adhesive cured layer formed by curing the adhesive layer becomes an epoxy cured product. The epoxy cured product is generally an epoxy compound having two or more epoxy groups cured with a curing agent. Hereinafter, a case where the epoxy cured product is used for the adhesive layer will be described as an example.

Examples of the epoxy compound include bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, orthocresol novolac type epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, and phenolic diglycidyl ethereated products. , Diglycidyl etherified compounds of alcohols and the like.
Examples of the curing agent include polyfunctional phenols, amines, polyamines, mercaptans, imidazoles, acid anhydrides, phosphorus-containing compounds and the like. Among these, the polyfunctional phenols include hydroquinone, resorcinol, catechol, which are monocyclic bifunctional phenols, bisphenol A, bisphenol F, naphthalenediols, biphenols, and halides thereof, which are polycyclic bifunctional phenols. , Alkyl group substituents and the like. Further, novolak and resol, which are polycondensates of these phenols and aldehydes, can be used. Examples of amines include aliphatic or aromatic primary amines, secondary amines, tertiary amines, quaternary ammonium salts and aliphatic cyclic amines, guanidines, urea derivatives and the like.
Among the above examples, the material of the adhesive layer (including the curable resin material) includes, for example, a bisphenol A type epoxy or a bisphenol F type epoxy main agent, and polyamines or mercaptans as an epoxy resin adhesive. Examples include those using the above-mentioned curing agent. Further, the epoxy resin-based adhesive may contain, for example, a coupling agent, a viscosity modifier, a curing accelerator, or the like, in addition to the main agent and the curing agent. As such an adhesive layer, for example, a two-component reaction-curing water-based epoxy resin emulsion "Aromble Coat P-300" manufactured by Toagosei Co., Ltd. (trade name: "Aromble Coat" is a registered trademark of Toagosei Co., Ltd.). .) Can be used.

The adhesive layer is generally used as an undercoat material for structures. For the coating, for example, as the undercoat material, a solvent-type epoxy resin solvent solution, an epoxy resin emulsion and other general emulsions, an adhesive, or the like may be applied to the surface of the structure. In this case, the undercoat material can be applied by an ordinary method, for example, it is generally applied to the surface of a structure to which a drainer member is to be attached with a brush or a roller, or sprayed with a spray gun or the like. It is applied by the method to form a coating film. The adhesive layer may be applied to the surface of the polymer cement hardened layer side of the affixed portion of the draining member.
The thickness of the adhesive layer is not particularly limited, but is preferably in the range of 50 μm or more and 300 μm or less in a wet state. When the thickness is 50 μm or more, when the structure is made of concrete, the thickness of the adhesive layer can be easily made uniform in consideration of the penetration of the material of the adhesive layer into the concrete, and the structure and the present invention can be made. It becomes easy to secure the adhesiveness with the sticking part of the drainage member. The upper limit of the thickness of the adhesive layer is not particularly limited, but it may be 300 μm or less in terms of ease of application, the meaning of minimizing the deviation between the two layers at the time of adhesion, and the optimization of the amount of material used. preferable. Since it acts to enhance mutual adhesion between the adhesive layer provided as the undercoat layer of the structure and the pasted portion, if the adhesive layer is made the above thickness, the draining member according to the present invention is stable for a long period of time. Can be attached to the structure.
When the structure has cracks or defects, it is preferable to provide the adhesive layer after repairing the cracks or defects before applying the adhesive layer. The repair method is not particularly limited, but the repair is usually performed using cement mortar, epoxy resin, or the like.

In the present invention, the polymer cement hardened layer of the sticking portion of the draining member according to the present invention is installed on the adhesive layer so as to be in contact with the adhesive layer. The draining member can be installed, for example, by applying an adhesive layer on the structure and then laminating the draining member. As a result, even if you are not a skilled worker, you can provide a drainer member composed of layers with small thickness variations to the structure, reduce the construction period, and provide a drainer member with excellent adhesiveness. can. It should be noted that the adhesive layer can be applied not on the structure but on the surface of the polymer cement hardened layer at the bonding portion of the draining member immediately before bonding.

In the present invention, the pasting portion may be attached only to the portion of the structure that requires draining, the draining portion is arranged at the portion of the structure that requires draining, and the pasting portion is the structure. It may be attached so as to cover the portion to be repaired on the surface.
In the former case, the pasting method is the same as that of the conventional draining member, and the draining member according to the present invention can be easily pasted so that the draining portion is arranged at a portion requiring draining. Since the draining member according to the present invention has a layer structure including a polymer cement hardened layer, it has excellent adhesiveness and appearance to a structure as compared with a conventional draining member such as one using a foam. It becomes. Further, since the resin layer can be given a design property, the appearance can be further improved.
In the latter case, it becomes more difficult to attach the draining member according to the present invention so that the draining portion is arranged at the portion where the draining portion is required, but the adhesiveness and appearance to the structure are improved.

One of the features of the present invention is that an adhesive layer that functions as an undercoat layer can be used as an adhesive layer without using an adhesive. Therefore, in the present invention, the draining member can be installed directly on the adhesive layer (uncured, wet state), and the process can be shortened.

[How to enforce the structure protection sheet]
In the method of enforcing the structure protective sheet according to the present invention (hereinafter, also referred to as the enforcing method according to the present invention), the attachment portion of the drainage member according to the present invention is attached to the lower surface of the structure and / or via the adhesive layer. Another structure protective sheet having at least a step of attaching to the boundary between the outer wall of the structure and the foundation, a polymer cement hardened layer, and a resin layer provided on the polymer cement hardened layer is prepared, and other bonding is performed. It has a step of sticking a polymer cement hardened layer of the other structure protection sheet to the surface of the structure via an agent layer, and the other structure protection sheet has a drainage portion of a sticking portion of the drainage member. It is characterized in that it is attached to the structure so as to form a continuous surface with the end portion on the opposite side to the above.

The enforcement method according to the present invention includes a step of attaching a sticking portion of the draining member according to the present invention to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via an adhesive layer.
Examples of this step include the same steps as the above-mentioned method for attaching the draining member.

In the enforcement method according to the present invention, another structure protective sheet including at least a polymer cement hardened layer and a resin layer provided on the polymer cement hardened layer is prepared, and the other is via another adhesive layer. The present invention comprises a step of attaching a polymer cement hardened layer of the structure protective sheet to the surface of the structure.
Examples of the other structural protective sheet include the same protective sheet as the protective sheet constituting the draining member according to the present invention, and examples of the other adhesive layer include the same adhesive layer as described above.
The other structure protective sheet and the other adhesive layer may be different from the protective sheet and the adhesive layer described in the drainage member according to the present invention, but they are attached to the structure by making them the same. In some cases, the structure is integrated and the appearance is excellent, and the adhesiveness to the structure is the same, so that only one of them is not peeled off.
Hereinafter, the structure protective sheet constituting the drainer member according to the present invention and other structure protective sheets will be described with the same reference numerals without distinction, and the adhesive layer described in the drainer member according to the present invention will be described. It will be described as the same as the above other adhesive layers.

In the enforcement method according to the present invention, as shown in FIG. 4A, the other structure protection sheet 10 is continuous with the end portion of the sticking portion 18 of the draining member according to the present invention on the opposite side to the draining portion 17. It is attached to the structure 2 so as to form a smooth surface.
That is, since the draining member according to the present invention is attached in a flush state with no gap at the joint between the affixed portion and the other structure protective sheet, the appearance is extremely excellent due to the integrated configuration.
In addition, in the construction method which concerns on this invention, as shown in FIG. It may be configured to be attached to the structure 2 so as to overlap each other. In the case of such a configuration, the sticking portion 18 of the draining member according to the present invention and the other structure protection sheet 10 do not strictly form a flush surface, but the sticking portion is compared with the height of the draining portion 17. Since the thickness of 18 and the other structure protective sheet 10 is sufficiently thin, the difference between the overlapped portion and the other portion has almost no effect on the appearance, so that it is considered to be attached in a flush state. Further, with such a configuration, it is possible to suitably prevent water from entering from the boundary between the sticking portion 18 of the draining member and the other structure protective sheet 10, so that the adhesiveness to the structure 2 is extremely excellent. It becomes a thing.
As a specific method of constructing the draining member as shown in FIGS. 4A and 4B, for example, another structure protective sheet 10 is attached to the surface of the structure 2 and according to the present invention. After cutting off the other structure protection sheet 10 of the portion to which the draining member is attached to prepare the draining member according to the present invention, the manufactured portion to which the draining member according to the present invention is attached is cut off from the other structure protection sheet 10. There is a method of pasting it on the part.
Further, as shown in FIG. 4C, another structure protective sheet 10 is attached to the surface of the structure 2, and a draining member according to the present invention is attached to the surface of the other structure protective sheet 10. 18 may be pasted. Such a method is also one of the present inventions according to another aspect.
When the drainer member according to the present invention and the other structure protection sheet 10 are attached to the structure 2 in the state shown in FIGS. 4A to 4C, the attachment portion 18 of the drainer member according to the present invention is attached. The size is not particularly limited, and is appropriately determined in consideration of the size of the structure 2, the size of the draining portion 17, the surface shape to which the structure 2 is attached, and the like.

In the enforcement method according to the present invention, as a method of attaching another structure protective sheet to the structure via another adhesive layer, the attachment portion of the drainage member according to the present invention is attached via the above-mentioned adhesive. The same method as the method of attaching can be mentioned.

1, 21 Structure 2 Overhang 2a Bottom surface 10 Structure protection sheet 11 Draining member 12 Polymer cement hardened layer 13 Resin layer 13'Uncured resin layer 14 Release sheet 15 Adhesive layer 16 Mesh layer 17 Draining part
17a Bent part 17b Square part 18 Sticking part 80 Embossed roll

Claims (6)

A draining member using a structure protective sheet including at least a polymer cement hardened layer provided on the structure side and a resin layer provided on the polymer cement hardened layer.
A draining portion in which the polymer cement hardened layer is bent so as to be inward and the convex portions are continuously formed into a linear shape.
A draining member having a sticking portion that is continuously attached to a structure via a corner portion on the opposite side of the bent portion of the draining portion. The draining member according to claim 1, wherein the draining portion has a double structure in which a structural protective sheet is bent to bring the polymer cement hardened layers into contact with each other. The draining member according to claim 1, wherein the draining portion has a formation in which the thickness continuously or intermittently decreases from the corner portion toward the bent portion. The draining member according to claim 1, 2 or 3, wherein the cross-sectional shape perpendicular to the length direction of the draining portion is symmetrical with respect to the center line passing through the center in the width direction of the draining portion. It is characterized by having a step of attaching the attachment portion of the draining member according to claim 1, 2, 3 or 4 to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via an adhesive layer. How to attach the drainer member. A step of attaching the sticking portion of the draining member according to claim 1, 2, 3 or 4 to the lower surface of the structure and / or the boundary between the outer wall of the structure and the foundation via the adhesive layer.
Another structure protective sheet including at least a polymer cement hardened layer and a resin layer provided on the polymer cement hardened layer is prepared, and the polymer cement of the other structure protective sheet is prepared via another adhesive layer. It has a step of attaching the cured layer to the surface of the structure.
The other structure protection sheet is characterized in that it is attached to the structure so as to form a surface continuous with the end portion of the attachment portion of the draining member opposite to the draining portion. Sheet construction method.

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