Application amount confirmation seal and method for confirming application of impregnating agent to concrete surface

Abstract

To provide a coating amount confirmation seal which has a simple constitution and can easily confirm whether or not a concrete surface impregnating agent is coated or sprayed to a prescribed coating amount or more only by sticking the seal to the surface of a concrete structure, and a concrete surface impregnating agent execution confirmation method using the coating amount confirmation seal.SOLUTION: A coating amount confirmation seal 1 of the invention that is attached to the surface of a concrete structure and used to check whether the concrete surface impregnating agent is coated or sprayed in a specified coating amount or more comprises: a waterproof sealing material 10; a litmus test paper 20 affixed on the liquid sealing material 10; and a water absorbing sealing material 30 affixed on the litmus test paper 20, wherein the water absorbing sealing material 30 covers the entire surface of the litmus test paper 20 and is larger than the perimeter of the litmus test paper 20.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an application amount confirmation seal that is attached to the surface of a concrete structure to confirm whether a concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount, and a method for confirming the application of a concrete surface impregnating agent using the application amount confirmation seal. [Background technology]

[0002] The surface layer of concrete used in bridges and revetments deteriorates over time due to long-term exposure to sunlight, dryness, temperature changes, etc. As a method to prevent such deterioration and extend the life of concrete, various concrete surface impregnation agents and coating materials are applied to the surface layer of concrete. One such concrete surface impregnating agent is a silicate-based concrete surface impregnating agent. However, since silicate-based concrete surface impregnating agents are colorless and transparent, there is a problem in that it is difficult to check the application or scattering at the site. A concrete impregnation material and its application method for solving such problems are disclosed in, for example, Patent Document 1 below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-189776 A Summary of the Invention [Problem to be solved by the invention]

[0004] The prior art shown in Patent Document 1 above relates to a silicate-based concrete surface impregnating agent and application method, and has the advantage that a luminescent material that absorbs ultraviolet light, converts it to visible light, and emits light is added to the silicate-based concrete surface impregnating agent, making it possible to detect the application area. However, in the conventional technology shown in Patent Document 1, although it is possible to judge whether or not the application has been performed by checking the emission of light, there is a problem in that it is not possible to check whether or not the silicate-based concrete surface impregnating agent has been applied or sprayed over the entire application surface in an amount greater than the prescribed amount. In addition, there has been a conventional technique for checking the application of chemicals, which includes a tester capable of detecting the amount of alkali by the amount of components, mounted inside a resin base plate, and the tester reaction unit detects the amount of components to control the amount of chemicals sprayed. There has also been a technique for checking the amount of chemicals applied by absorbing the applied chemicals with a mat and measuring the weight of the mat. There has also been a technique for checking the application by checking the change in color of litmus paper. There has also been a technique for checking the completion of the application work by using an impregnating agent mixed with a degenerative coloring agent to check the coloring state of the applied surface. However, the technology of providing a tester in a resin base plate has a problem that it is difficult to reduce manufacturing costs because a mold is required to manufacture the base plate. Also, the technology of using litmus paper has a problem that it is difficult to pinpoint the litmus paper because it is attached to the concrete in a wet state immediately after the chemical is applied, resulting in poor work efficiency. In addition, all of the techniques, including the technique of installing a tester inside a resin base plate, the technique of measuring the weight of the mat, the technique of using litmus paper, and the technique of using an impregnating agent mixed with a degenerative coloring agent, had the problem that it was impossible to confirm whether the agent had been applied or sprayed over the entire construction surface in an amount greater than the specified amount.

[0005] Therefore, an object of the present invention is to provide an application amount confirmation sticker that solves the above-mentioned problems of the conventional technology and that has a simple structure and that can easily confirm whether a concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount by simply attaching it to the surface of a concrete structure, and a method for confirming the application of a concrete surface impregnating agent using the application amount confirmation sticker. [Means for solving the problem]

[0006] The application amount confirmation sticker of the present invention is an application amount confirmation sticker that is affixed to the surface of a concrete structure to confirm whether a concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount, and has a first feature in that it comprises a waterproof sealant, a litmus paper affixed on the waterproof sealant, and a water-absorbent sealant affixed on the litmus paper, and the water-absorbent sealant covers the entire surface of the litmus paper and is larger than the peripheral edges of the litmus paper. In addition to the first feature, the application amount confirmation sticker of the present invention has a second feature in that an exposed area is provided in the central area of ​​the water-absorbent sealing material, through which part of the litmus paper is exposed. In addition to the second characteristic, the application amount confirmation sticker of the present invention has a third characteristic in that the exposed area is composed of a circular hole provided in the center of the water-absorbent sealant, and the area of ​​the hole is 0.2% to 2% of the area of ​​the water-absorbent sealant. In addition to any one of the first to third features, the application amount confirmation sticker of the present invention has a fourth feature in that the thickness of the water-absorbent sealing material is 0.01 mm to 0.5 mm. In addition to the features of any one of claims 1 to 4, the application amount confirmation sticker of the present invention has a fifth feature in that the light transmittance of the water-absorbent sealing material in the visible light region is 0.3% to 10%. In addition to the features of any one of claims 1 to 5, the application amount confirmation sticker of the present invention has a sixth feature in that the size of the waterproof sealant is configured to be large enough to leave a blank area when the litmus paper and the water-absorbent sealant are attached, and a space is provided in the blank area for recording the date and time the application amount was confirmed, and a scale is provided on one of the peripheral sides of the waterproof sealant. The seventh feature of the method for checking application of a concrete surface impregnating agent of the present invention is to stick the application amount checking sticker according to any one of claims 1 to 6 to the surface of a concrete structure, apply or spray an alkaline concrete surface impregnating agent in an amount equal to or greater than a prescribed amount, and check the amount of application by checking whether the entire surface of a red litmus paper changes color. Effect of the Invention

[0007] According to the application amount confirmation sticker described in claim 1, since it has a simple structure including a waterproof sealant, a litmus paper, and a water-absorbent sealant, it is possible to provide an application amount confirmation sticker that can reduce manufacturing costs. Furthermore, when commercially available waterproof sealant, litmus paper, and water-absorbent sealant are used, it is possible to provide an application amount confirmation sticker that can further reduce costs. In addition, since the bottom layer is a waterproof sealant, it can be easily and quickly attached to a desired position on a concrete structure and can be easily and quickly peeled off after checking, resulting in a sticker for checking the amount of application with good work efficiency. In addition, by making the top layer a water-absorbent sealant and making the size of the water-absorbent sealant large enough to cover the entire surface of the litmus paper, the concrete surface impregnating agent applied or sprayed does not directly adhere to and soak into the litmus paper, but first soaks into the water-absorbent sealant and then adheres to and soaks into the litmus paper. With this configuration, if a coating amount confirmation sticker is used in which the material, size, and thickness of the water-absorbent sealant and the material, size, and thickness of the litmus paper are preset so that the entire surface of the litmus paper changes color only when the concrete surface impregnating agent is applied or sprayed in a specified amount or more, it becomes easy to confirm whether the concrete surface impregnating agent has been applied or sprayed in a specified amount or more over the entire construction surface simply by confirming that the litmus paper has changed color over the entire surface. Furthermore, by making the size of the absorbent sealant larger than the peripheral edge of the litmus paper, it is possible to effectively prevent the concrete surface impregnating agent from directly seeping into the litmus paper through the gaps around the peripheral edge of the absorbent sealant, thereby effectively preventing discoloration of the entire surface of the litmus paper when the amount of application is less than the specified amount.

[0008] According to the application amount confirmation seal of claim 2, in addition to the advantageous effects of the configuration of claim 1, an exposed area is provided in the central area of ​​the water-absorbent sealant, where a part of the litmus paper is exposed, so that the concrete surface impregnating agent adheres directly to the exposed litmus paper in the exposed area and soaks into it. This allows the pH of the concrete surface impregnating agent used to be confirmed in a short time. Therefore, it becomes possible to quickly confirm on-site whether the liquid property of the concrete surface impregnating agent used is correct. This allows for an application amount confirmation seal with even better workability.

[0009] Furthermore, according to the application amount confirmation sticker described in claim 3, in addition to the advantageous effects of the configuration described in claim 2, the exposed area is configured as a circular hole provided in the center of the water-absorbent sealant, and the area of ​​the hole is set to 0.2% to 2% of the area of ​​the water-absorbent sealant, so that the concrete surface impregnating agent that permeates the water-absorbent sealant and then indirectly permeates the litmus paper and permeates the entire litmus paper, and the concrete surface impregnating agent that permeates the litmus paper directly from the circular hole provided in the center and permeates the entire litmus paper, combine to allow the concrete surface impregnating agent to permeate the entire surface of the litmus paper efficiently and gradually.

[0010] According to the application amount confirmation seal described in claim 4, in addition to the effects of the configuration described in any one of claims 1 to 3, by configuring the thickness of the water-absorbent sealant to be 0.01 mm to 0.5 mm, even when there are multiple types of prescribed application amounts of concrete surface impregnating agent to be confirmed by the application amount confirmation seal, the material and size of the water-absorbent sealant and the litmus paper used to confirm the multiple types of application amounts are all the same, and only the thickness of the water-absorbent sealant is changed, making it possible to provide an application amount confirmation seal that can be applied to multiple types of prescribed application amounts of concrete surface impregnating agents. Therefore, when there are variations in the prescribed application amounts of concrete surface impregnating agent to be confirmed by the application amount confirmation seal, it is possible to provide an application amount confirmation seal that can be more cost-effective than a case in which the configurations of all three layers of the waterproof sealant, the litmus paper, and the water-absorbent sealant are individually changed according to the variations in the application amounts.

[0011] According to the application amount confirmation sticker described in claim 5, in addition to the advantageous effects of the configuration described in any one of claims 1 to 4, the transmittance of the water-absorbent sealant in the visible light region is set to 0.3% to 10%, so that the light can effectively pass through the litmus paper underneath the water-absorbent sealant, making it possible to confirm the color change. Therefore, the application amount confirmation sticker can be provided so that the color change of the litmus paper can be easily and reliably visually confirmed at the site.

[0012] Furthermore, according to the application amount confirmation sticker described in claim 6, in addition to the advantageous effects achieved by the configuration described in any one of claims 1 to 5 above, a marginal area is provided in the waterproof sealant, and a writing column is provided in the marginal area for writing the application amount confirmation date and time, etc., and a scale is provided on one of the peripheral sides of the waterproof sealant, thereby making it possible to provide an application amount confirmation sticker that makes it easy to check the application by simply taking a photograph after application.

[0013] In addition, according to the method for checking the application of a concrete surface impregnating agent as set forth in claim 7, the work steps of the method for checking the application of a concrete surface impregnating agent can be simplified, and the method can be a cost-saving method. [Brief description of the drawings]

[0014] [Figure 1] 1A and 1B are diagrams showing an application amount confirmation sticker according to an embodiment of the present invention, in which (a) is a front view and (b) is an exploded view. [Diagram 2] 1A and 1B are diagrams showing an application amount confirmation sticker according to an embodiment of the present invention, in which (a) shows the state in which the application amount confirmation sticker is attached to the wall surface of a concrete structure, and (b) shows the state in which the application amount confirmation sticker is attached to the ceiling surface of a concrete structure. [Diagram 3] 1A to 1C are diagrams showing an application amount confirmation sticker according to an embodiment of the present invention, in which (a) is a plan view, (b) is a side view, and (c) is a cross-sectional view taken along line AA in (a). [Figure 4] FIG. 2 is a diagram showing an application amount confirmation sticker according to an embodiment of the present invention, and is a diagram showing a schematic diagram of a state in which a concrete surface impregnating agent gradually permeates. [Diagram 5] 1A and 1B are diagrams showing modified examples 1 and 2 of the application amount confirmation sticker according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The following description will be made with reference to the drawings, which are provided to help understand the present invention. However, the following description does not limit the scope of the present invention. In addition, in Figs. 1, 2, 4 and 5, the litmus paper 20 covered with the water-absorbent sealing material 30 should be shown by a dashed line, but for convenience of explanation, it is shown by a solid line.

[0016] First, referring to FIG. 2, the application amount confirmation sticker 1 according to the embodiment of the present invention is attached to the surface of a concrete structure 40 before the concrete surface impregnating agent is applied or sprayed, and the concrete surface impregnating agent is applied or sprayed in this state, so that it can be used to confirm whether the concrete surface impregnating agent has been applied or sprayed in an amount equal to or greater than the prescribed amount. More specifically, for example, the application amount confirmation sticker 1 is attached to a wall surface 41 of a concrete structure 40 as shown in Fig. 2(a) or to a ceiling surface 42 of a concrete structure 40 as shown in Fig. 2(b). Of course, the places where the application amount confirmation sticker 1 is attached are not limited to these places, and it may be any desired place where the application amount confirmation sticker 1 can be attached. In this embodiment, the configuration of the application amount confirmation sticker used when using a silicate-based concrete surface impregnating agent as the concrete surface impregnating agent will be described below. As the silicate-based concrete surface impregnating agent, for example, a silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd. can be used. For this silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd., the prescribed application amount for the impregnating agent to exert its effect is 250 g / m. 2 The above application or spraying must be carried out.

[0017] 1 to 3, this application amount check sticker 1 is made up of a waterproof sealing material 10, a litmus paper 20, and a water-absorbent sealing material 30 in this embodiment.

[0018] The waterproof sealant 10 constitutes the base of the application amount confirmation sticker 1. As the waterproof sealant 10, various types of commercially available waterproof sealant can be used. 1, the waterproof sealant 10 is rectangular in shape, and the litmus paper 20 and the water-absorbent sealant 30 are attached at the center of the rectangular shape. More specifically, the litmus paper 20 and the water-absorbent sealant 30 are attached in an overlapping state at the center of the waterproof sealant 10. Furthermore, the size of the waterproof sealant 10 is set to a size that leaves a blank area Y when the litmus paper 20 and the water-absorbent sealant 30 are attached, and a writing field 11 is provided in the blank area Y for writing the date and time of checking the application amount, the checking location number, etc. Also, in this embodiment, a scale 12 is provided on the left side of the periphery of the waterproof sealant 10. The shape of the waterproof sealant 10, the positions of the litmus paper 20 and the water-absorbent sealant 30, the positions, numbers, shapes, etc. of the entry fields 11 and the scale 12 are not limited to those in this embodiment, and can be changed as appropriate. For example, the shape of the waterproof sealant 10 can be other shapes such as an ellipse or a circle. However, in consideration of work efficiency and the area in which the entry fields 11 are provided, a rectangular shape is preferable. The size of the waterproof sealant 10 is preferably about 70 mm long and 100 mm wide. If it is less than this size, the size of the application amount confirmation sticker will be small and difficult to check on site, and if it is more than this size, the size of the waterproof sealant 10 will be unnecessarily large compared to the litmus paper 20 and the absorbent sealant 30. The thickness of the waterproof sealant 10 is preferably about 0.1 mm. By making it this thick, it can be made less susceptible to the effects of wind on site.

[0019] The litmus paper 20 is used to check the liquidity of the concrete surface impregnating agent and to visually check whether the concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount, and is attached onto the waterproof sealant 10. In this embodiment, as shown in Fig. 1, rectangular red litmus paper is used as the litmus paper 20, and the litmus paper 20 is attached to the center of the waterproof sealant 10. Of course, the shape of the litmus paper 20 and the position where the litmus paper 20 is attached to the waterproof sealant 10 are not limited to this configuration and can be changed as appropriate. However, in consideration of the work efficiency and the area where the entry column 11 and the scale 12 are provided, it is preferable that the litmus paper 20 is rectangular and attached to the center of the waterproof sealant 10.

[0020] As the litmus paper 20, various types of commercially available litmus paper can be used. However, as a concrete surface impregnation agent, 250g / m 2 When using the silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Makai Chemical Industry Co., Ltd., which is applied or sprayed as described above, it is preferable to use litmus paper 20 having a size of 10 mm in length, 50 mm in width, and 0.18 mm in thickness. By adopting such a configuration, commercially available litmus paper can be used. Furthermore, if the size and thickness are less than the above, the entire surface of the litmus paper 20 may discolor even if the amount applied is less than the specified amount, making it impossible to confirm whether the amount applied or sprayed is more than the specified amount. Furthermore, if the size and thickness are greater than the above, the entire surface of the litmus paper 20 may not discolor even if the amount applied is more than the specified amount, making it impossible to confirm whether the amount applied or sprayed is more than the specified amount.

[0021] The water-absorbent sealant 30 is attached onto the litmus paper 20 to cover most of the litmus paper 20, thereby functioning to adjust the amount of concrete surface impregnating agent that seeps into the litmus paper 20. In this embodiment, as shown in FIG. 1( a ), the absorbent sealing material 30 is rectangular in shape, covers the entire surface of the litmus paper 20 , and is larger than the peripheral edges of the litmus paper 20 .

[0022] 1 and 3(c), an exposed region R that exposes a part of the litmus paper 20 is provided at a position where a central region C1 in the left-right direction and a central region C2 in the up-down direction of the water-absorbent sealant 30 overlap. Note that the "central region in the left-right direction of the water-absorbent sealant 30" here means a region within 5 mm on either side of the center of the water-absorbent sealant 30 in the left-right direction, and the "central region in the up-down direction of the water-absorbent sealant 30" means a region within 5 mm on either side of the center of the water-absorbent sealant 30 in the up-down direction. Furthermore, as the configuration of the exposed region R, a circular hole is provided in the center of the water-absorbent sealant 30, and this hole is configured as the exposed region R. The exposed region R is provided to allow the concrete surface impregnating agent to be directly attached to the litmus paper 20 in the exposed state and to soak into the litmus paper 20, thereby enabling the liquidity of the concrete surface impregnating agent to be quickly confirmed. Of course, the configuration of the exposed region R (position, shape, number, etc.) is not limited to that of this embodiment, and can be changed as appropriate. For example, a rectangular hole may be used as the exposed region R, and the position of the hole may be set at a position other than the center. However, it is preferable to set the exposed region R in the center of the water-absorbent sealant 30.

[0023] Furthermore, the material, size, thickness, and size of the exposed region R of the absorbent sealant 30 are each configured to be pre-adjusted to match the material, size, and thickness of the litmus paper 20 so that the entire surface of the litmus paper 20 will not discolor until the concrete surface impregnating agent is applied or sprayed in an amount greater than the specified application amount.

[0024] In addition, when using the silicate-based concrete surface impregnation agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd. as the concrete surface impregnation agent, and when using litmus paper 20 having a length of 10 mm, a width of 50 mm, and a thickness of 0.18 mm, the water-absorbent sealant 30 should have an area of ​​1000 mm. 2 ~7000mm 2It is preferable to use a material having an area of ​​about 200% to 1400% of the area of ​​the litmus paper 20, a thickness of about 0.01 mm to 0.5 mm, and an area of ​​the hole constituting the exposed region R being about 0.2% to 2% of the area of ​​the water-absorbent sealant 30. In other words, it is preferable that the area of ​​the water-absorbent sealant 30 is about 200% to 1400% of the area of ​​the litmus paper 20, and the thickness of the water-absorbent sealant 30 is about 5% to 270% of the thickness of the litmus paper 20. If the size of the water-absorbent sealing material 30 is less than the above, the 2 Under the above-mentioned application or spraying conditions, the amount of concrete surface impregnating agent that soaks into the absorbent sealant 30 in the preliminary stage before it reaches the litmus paper 20 is small, and the concrete surface impregnating agent soaks into the litmus paper 20 earlier and in greater amounts than expected, which may cause the entire surface of the litmus paper 20 to discolor even if the applied or sprayed concrete surface impregnating agent is less than the specified amount, making it impossible to check whether the application amount confirmation sticker 1 has been used to confirm whether the application amount has been more than the specified amount. On the other hand, if the size of the absorbent sealant 30 exceeds the above-mentioned, the amount of concrete surface impregnating agent that soaks into the absorbent sealant 30 in the preliminary stage before it reaches the litmus paper 20 is large, and even if the applied or sprayed concrete surface impregnating agent is more than the specified amount, the entire surface of the litmus paper 20 may not discolor, making it impossible to check whether the application amount confirmation sticker 1 has been used to confirm whether the application amount has been more than the specified amount. In addition, if the thickness of the absorbent sealant 30 is less than 0.01 mm, the amount of concrete surface impregnating agent that soaks into the absorbent sealant 30 in the preliminary stage before it reaches the litmus paper 20 is reduced, and the concrete surface impregnating agent soaks into the litmus paper 20 earlier and in greater amounts than expected, which may cause the entire surface of the litmus paper 20 to discolor even if the applied or sprayed concrete surface impregnating agent is less than the specified amount, making it impossible to check whether the application amount check sticker 1 has been applied or sprayed in the specified amount or more. On the other hand, if the thickness of the absorbent sealant 30 exceeds 0.5 mm, the amount of concrete surface impregnating agent that soaks into the absorbent sealant 30 in the preliminary stage before it reaches the litmus paper 20 is increased, and even if the applied or sprayed concrete surface impregnating agent is more than the specified amount, the entire surface of the litmus paper 20 may not discolor, making it impossible to check whether the application amount check sticker 1 has been applied or sprayed in the specified amount or more. Furthermore, if the area of ​​the holes is less than 0.2% of the area of ​​the absorbent sealant 30, it becomes difficult to quickly check the liquidity of the concrete surface impregnating agent, and if it exceeds 2%, the concrete surface impregnating agent will not indirectly penetrate into the litmus paper 20 via the absorbent sealant 30, but rather the area through which the concrete surface impregnating agent penetrates directly into the litmus paper 20 will become large, and even if the amount applied is less than the specified amount, the entire surface of the litmus paper 20 may discolor, making it impossible to check whether the amount applied is more than the specified amount.

[0025] When using the silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd. as the concrete surface impregnating agent, and when using litmus paper 20 that is 10 mm long, 50 mm wide and 0.18 mm thick, it is more preferable to use water-absorbent sealant 30 that is 20 mm long and 65 mm wide, with the area of ​​the hole that constitutes exposed region R being 2% of the area of ​​water-absorbent sealant 30 and 0.14 mm thick.

[0026] In addition, as the water-absorbent sealant 30, various commercially available water-absorbent sealants can be used as long as they are neutral and have appropriate water absorption. However, when using the silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Maikei Chemical Industry Co., Ltd. as the concrete surface impregnating agent, it is preferable to use a water-peelable adhesive seal (product name "Seventack Water-soluble Paper #5076" manufactured by Kuramoto Sangyo Co., Ltd.) or a general paper seal commercially available as a blank seal paper for office use (for example, a blank label sheet of A4 paper size or a blank label sheet of B5 paper size).

[0027] In addition, in this embodiment, the water-absorbent sealant 30 has a visible light transmittance of 0.3% to 10%. If the visible light transmittance of the water-absorbent sealant 30 is less than 0.3%, it becomes difficult to confirm discoloration of the litmus paper 20, and if it exceeds 10%, it becomes impossible to use a commercially available sealant, resulting in poor convenience and failure to achieve cost savings.

[0028] Next, a method for manufacturing the application amount confirmation sticker 1 having the above configuration will be described. First, the writing fields 11 and the scale 12 are printed at predetermined positions on a single commercially available waterproof sealing material sheet of a size that allows multiple waterproof sheet materials to be cut out. The waterproof sealing material sheet is then cut at predetermined positions to form multiple waterproof sealing materials 10. The process of printing the writing fields 11 and the scale 12 may be performed after a single waterproof sealing material sheet is cut into multiple sheets. Then, a circular hole is formed at each center position using a commercially available water-absorbent sealant sheet of a size that allows multiple sheets of water-absorbent sealant to be cut out. The hole can be formed by any appropriate method, such as punching using a die. After that, the water-absorbent sealant sheet is cut at predetermined positions to form multiple sheets of water-absorbent sealant 30. Note that the water-absorbent sealant sheet needs to be neutral and have appropriate water absorption. Then, a commercially available red litmus paper 20 is attached horizontally at the center of one of the waterproof sealing materials 10. Then, a sheet of water-absorbent sealant 30 is attached horizontally so as to cover the entire surface of the litmus paper 20 and extend beyond the peripheral edge of the litmus paper 20. At this time, the sheet is attached so that the center of the litmus paper 20 and the center of the water-absorbent sealant 30 overlap each other. In this manner, the application amount confirmation sticker 1 according to the embodiment of the present invention is manufactured.

[0029] Next, a method for checking the application of a concrete surface impregnating agent using the application amount checking sticker 1 having the above-mentioned configuration will be described.

[0030] 2 and 4, before applying the concrete surface impregnating agent, a predetermined number of application amount confirmation sheets 1 are attached in advance to predetermined positions of a concrete structure 40 for which application confirmation is desired. Thereafter, a concrete surface impregnating agent is applied or sprayed. When the silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd. is used as the concrete surface impregnating agent, the concrete surface impregnating agent is applied or sprayed at a rate of 250 g / m. 2 The above application or spraying is carried out. Then, the applied or sprayed concrete surface impregnating agent adheres directly to the surface of the litmus paper 20 in the exposed region R and penetrates into the exposed region R. On the other hand, in the region other than the exposed region R, the applied or sprayed concrete surface impregnating agent adheres to the surface of the water-absorbent sealant 30 and penetrates into the exposed region R. 4(a), the concrete surface impregnating agent that has directly adhered to and permeated the surface of the litmus paper 20 in the exposed region R gradually spreads the permeation region from the center of the litmus paper 20 to the left and right as shown by the hatched region and the outline arrow. At this time, although not shown, in the region where the concrete surface impregnating agent that has been applied or sprayed is attached to the water-absorbent sealant 30 (region excluding the exposed region R), the concrete surface impregnating agent permeates further into the water-absorbent sealant 30 until it finally reaches the litmus paper 20, accelerating the spread of the concrete surface impregnating agent permeating the litmus paper 20 to the left and right. Finally, as shown in FIG. 4(b), the concrete surface impregnating agent permeates the entire surface of the water-absorbent sealant 30 and the litmus paper 20, causing the entire surface of the litmus paper 20 to change color from red to blue. By checking that the entire surface of the litmus paper 20 changes color as described above, it is possible to check on-site that the concrete surface impregnating agent has been applied or sprayed in an amount greater than the prescribed amount. After confirmation, a photograph will be taken and the photographed data will be stored as a record.

[0031] The application amount confirmation sticker 1 according to the embodiment of the present invention and the method for checking the application of a concrete surface impregnating agent using the application amount confirmation sticker 1 configured as described above have the following advantages.

[0032] The application amount check sticker 1 can be manufactured at reduced costs by forming the application amount check sticker 1 with a simple configuration including the waterproof sealant 10, the litmus paper 20, and the water-absorbent sealant 30. Furthermore, when commercially available waterproof sealant 10, litmus paper 20, and water-absorbent sealant 30 are used, the application amount check sticker 1 can be manufactured at reduced costs.

[0033] In addition, since the bottom layer is the waterproof sealant 10, it can be easily and quickly attached to the desired position of the concrete structure 40, and can be easily and quickly peeled off after checking. Therefore, the application amount check sticker 1 can be made with good work efficiency.

[0034] In addition, by making the top layer a water-absorbent sealant 30 and making the size of the water-absorbent sealant 30 large enough to cover the entire surface of the litmus paper 20, the concrete surface impregnating agent applied or sprayed does not directly adhere to and permeate the litmus paper 20 except for the exposed region R, but first permeates the water-absorbent sealant 30 and then adheres to and permeates the litmus paper 20. With this configuration, by using a coating amount confirmation sticker 1 in which the material, size, and thickness of the water-absorbent sealant 30, the material, size, and thickness of the litmus paper 20, and the size of the exposed region R are preset to a configuration in which the entire surface of the litmus paper 20 changes color only when the concrete surface impregnating agent is applied or sprayed in a prescribed amount or more, it becomes possible to easily confirm whether the concrete surface impregnating agent has been applied or sprayed in a prescribed amount or more over the entire construction surface by simply confirming that the litmus paper 20 has changed color over the entire surface. Furthermore, by making the size of the absorbent sealant 30 larger than the peripheral edge of the litmus paper, it is possible to effectively prevent the concrete surface impregnating agent from directly seeping into the litmus paper 20 through the gaps around the peripheral edge of the absorbent sealant 30. This makes it possible to effectively prevent discoloration of the entire surface of the litmus paper 20 when the amount of application is less than the specified amount.

[0035] In addition, by providing an exposed region R in the central region of the absorbent sealant 30, where a part of the litmus paper 20 is exposed, the concrete surface impregnating agent adheres directly to the exposed litmus paper 20 in the exposed region R and soaks into it. This allows the pH of the concrete surface impregnating agent used to be checked in a short time. Therefore, it becomes possible to check quickly on-site whether the liquid property of the concrete surface impregnating agent used is correct. This makes it possible to provide an application amount check sticker 1 with even better workability.

[0036] Furthermore, by configuring the exposed region R as a circular hole provided in the center of the absorbent sealant 30 and setting the area of ​​the hole to 0.2% to 2% of the area of ​​the absorbent sealant 30, the concrete surface impregnating agent that penetrates into the absorbent sealant 30 and then indirectly penetrates into the litmus paper 20 and permeates the entire litmus paper 20, and the concrete surface impregnating agent that penetrates directly into the litmus paper 20 from the circular hole provided in the center and permeates the entire litmus paper 20, combine to allow the concrete surface impregnating agent to permeate the entire surface of the litmus paper 20 efficiently and gradually.

[0037] In addition, by configuring the thickness of the water-absorbent sealant 30 to be 0.01 mm to 0.5 mm, even if there are multiple types of concrete surface impregnating agents and specified application amounts to be confirmed by the application amount confirmation sticker 1, the thickness variation of the water-absorbent sealant 30 at which the entire surface of the litmus paper 20 changes color when the material and size of the water-absorbent sealant 30 and the litmus paper 20 used to confirm the application amount of multiple types are all configured to be the same can be investigated in advance, and the application amount confirmation sticker 1 applicable to multiple types of concrete surface impregnating agents can be made by simply changing the thickness of the water-absorbent sealant 30. Therefore, when there are variations in the concrete surface impregnating agents to be confirmed by the application amount confirmation sticker 1, the application amount confirmation sticker 1 can be made more cost-effective than when the configurations of all three layers of the waterproof sealant 10, the litmus paper 20, and the water-absorbent sealant 30 are individually changed according to the variations.

[0038] Furthermore, by setting the light transmittance of the absorbent sealant 30 in the visible light region to 0.3% to 10%, it is possible to use a commercially available absorbent sealant 30 and effectively transmit light through the litmus paper 20 underneath the absorbent sealant 30, making the color change visible. This allows for reduced manufacturing costs, and provides an application amount confirmation sticker 1 that allows easy and reliable confirmation of the color change of the litmus paper on site.

[0039] Furthermore, a blank area Y is provided in the waterproof sealant 30, and a writing section 11 is provided in the blank area Y for writing the application amount confirmation date and time, the confirmation location number, etc., and a scale 12 is provided on one of the peripheral sides of the waterproof sealant 10, thereby making it possible to create an application amount confirmation sticker 1 that allows easy application confirmation by simply taking a photograph after application.

[0040] In addition, according to the method for checking the application of an impregnating agent on a concrete surface using the application amount confirmation sticker 1, it is possible to simplify the work steps of the method for checking the application of an impregnating agent on a concrete surface and to provide a method for checking the application of an impregnating agent on a concrete surface that can reduce costs.

[0041] Next, first and second modified examples of the application amount confirmation sticker 1 according to the embodiment of the present invention will be described with reference to FIG. In these modified examples 1 and 2, only the configuration of the exposed region R is changed with respect to the application amount confirmation sticker 1 according to the embodiment of the present invention described above. Therefore, the same members and parts having the same functions as those of the application amount confirmation sticker 1 according to the embodiment of the present invention described above are given the same numbers, and detailed explanations thereof will be omitted below.

[0042] 5(a), in the application amount confirmation sticker 2 in this modified example 1, the exposed region R is configured to be formed by providing a rectangular slit that divides the absorbent sealant 30 into two equal parts, left and right, in the central region C1 in the left-right direction of the absorbent sealant 30, thereby forming the exposed region R1. Note that the method for forming the rectangular slit may be any method, such as a method of forming a notch in one piece of absorbent sealant 30, or a method of arranging two pieces of absorbent sealant 30 in parallel, left and right, with a predetermined gap between them. Such a configuration is also included in the present invention.

[0043] 5(b), in the application amount confirmation sticker 3 in this modified example 2, the exposed region R is formed by providing a rectangular slit in the vertical central region C2 of the water-absorbent sealant 30, which divides the water-absorbent sealant 30 into two equal parts, one above the other, to form the exposed region R2. The rectangular slit may be formed by any method, such as forming a notch in one piece of water-absorbent sealant 30, or arranging two pieces of water-absorbent sealant 30 in parallel, one above the other, with a predetermined gap between them. Such a configuration is also included in the present invention.

[0044] In this embodiment, the application amount confirmation sticker 1 is configured to be formed of three layers, namely, a waterproof sealant 10, a litmus paper 20, and a water-absorbent sealant 30. However, the configuration is not necessarily limited to this. In addition to the three layers, multiple layers made of the same material as at least one of the three layers may be provided, or a layer made of a different material from the three layers may be provided in addition to the three layers, thereby making the configuration four or more layers.

[0045] In this embodiment, the litmus paper 20 is used as the liquidity confirmation paper constituting the application amount confirmation sticker 1 and the prescribed application amount confirmation paper of the concrete surface impregnating agent, but a pH test paper may be used instead of the litmus paper 20. Even in such a configuration, it is possible to similarly obtain the effect of the present invention, that is, the liquidity of the concrete surface impregnating agent and the application or spraying of more than the prescribed application amount can be confirmed on-site.

[0046] In the embodiment of the present invention, an alkaline silicate-based concrete surface impregnating agent is used as the concrete surface impregnating agent, but the liquid property of the concrete surface impregnating agent that can be confirmed as the application amount confirmation sticker of the present invention is not limited to alkaline, and for example, an acidic concrete surface impregnating agent used for surface cleaning such as removing dirt and moss from the concrete structure 40 may be used. Of course, in this case, it is necessary to use blue litmus paper. Such a configuration is also included in the scope of the present invention. As for the alkaline concrete surface impregnating agent, in this embodiment, a silicate-based concrete surface impregnating agent (product name "Reactrise") manufactured by Mai Chemical Industry Co., Ltd. is used as the silicate-based concrete surface impregnating agent, but the present invention is not limited to this, and other alkaline concrete surface impregnating agents may be used. For example, a sodium silicate-based concrete surface impregnating agent, a lithium silicate-based concrete surface impregnating agent, a potassium silicate-based concrete surface impregnating agent, or a mixed system of these concrete surface impregnating agents, or a monomer-based concrete surface impregnating agent among silane-based concrete surface impregnating agents may be used. Such configurations are also included within the scope of the present invention.

[0047] In addition, in order to facilitate positioning when attaching the absorbent sealant 30 onto the litmus paper 20, a positioning mark (such as a symbol, illustration, frame line, ruled line, or any other mark that can be used for positioning) may be provided in advance on at least one of the waterproof sealant 10, the litmus paper 20, and the absorbent sealant 30. [Industrial Applicability]

[0048] The application amount confirmation sticker and the method for confirming the application of a concrete surface impregnating agent using the application amount confirmation sticker of the present invention have a simple configuration, and simply by attaching the sticker to the surface of a concrete structure, it is possible to easily confirm whether the concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount. Therefore, the sticker is useful in industrial fields related to confirmation of the application amount, and has great industrial applicability. [Explanation of symbols]

[0049] 1 Application amount confirmation sticker 2 Application amount confirmation sticker 3 Application amount confirmation sticker 10. Waterproof sealant 11. Description 12 Scale 20 Litmus Paper 30 Water-absorbent sealant 40 Concrete Structures 41 Wall 42 Ceiling surface C1 central area C2 central area R exposure area R1 exposure area R2 exposure area Y Margin Area

Claims

1. This is an application amount confirmation sticker that is affixed to the surface of a concrete structure to confirm whether a concrete surface impregnating agent has been applied or sprayed in an amount greater than the specified amount, the application amount confirmation sticker comprising a waterproof sealant, a litmus paper affixed onto the waterproof sealant, and a water-absorbent sealant affixed onto the litmus paper, the water-absorbent sealant covering the entire surface of the litmus paper and being larger than the peripheral edges of the litmus paper.

2. 2. The seal for checking the amount of application according to claim 1, wherein an exposed area for exposing a part of the litmus paper is provided in a central area of ​​the water-absorbent sealant.

3. The application amount confirmation sticker according to claim 2, characterized in that the exposed area is composed of a circular hole provided in the center of the water-absorbent sealant, and the area of ​​the hole is 0.2% to 2% of the area of ​​the water-absorbent sealant.

4. 4. The application amount confirmation sticker according to claim 1, wherein the water-absorbent sealing material has a thickness of 0.01 mm to 0.5 mm.

5. 5. The application amount confirmation sticker according to claim 1, wherein the water-absorbent sealing material has a light transmittance in the visible light region of 0.3% to 10%.

6. The application amount confirmation sticker according to any one of claims 1 to 5, characterized in that the size of the waterproof sealant is configured to leave a marginal area when the litmus paper and the water-absorbent sealant are attached, and a space is provided in the marginal area for recording the date and time of application amount confirmation, etc., and a scale is provided on one of the peripheral sides of the waterproof sealant.

7. A method for checking application of a concrete surface impregnating agent, comprising: attaching the application amount confirmation sticker according to any one of claims 1 to 6 to the surface of a concrete structure; applying or spraying an alkaline concrete surface impregnating agent in an amount equal to or greater than the prescribed application amount; and checking the application amount by checking whether the entire surface of the red litmus paper changes color.

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