JP2017031561A - Architectural structure maintenance method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate dirt including mold from a constitution surface and effectively remove the dirt by cleaning the constitution surface of an architectural structure.SOLUTION: A cleaning fluid 1 containing amylase, lipase and protease is sprayed in foam state on a constitution surface of an architectural structure, for example, an outer wall surface by using a foam sprayer 2. The cleaning fluid 1 is spread across the entire constitution surface by applying the cleaning fluid 1 on the entire constitution surface, using a tool such as a roller or a brush as necessary. Subsequently, the surface is left as it is for a defined period of time. Thus, dirt including mold on the constitution surface is separated off. High-pressure water washing of a high-pressure water washing machine 3 washes out the cleaning fluid 1 and removes the dirt.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to a building maintenance method for cleaning an outer wall surface of a building.

  The outer wall surface of buildings such as buildings and condominiums is exposed to sunlight, wind and rain, etc., so that air pollutants such as light dirt, soot, dust, dust, and exhaust gas are attached and accumulated. , Forming dirt stacked in the thickness direction. This dirt is dried and hardened by irradiation with ultraviolet rays or the like, and it is difficult to remove the dirt by firmly sticking to the outer wall surface.

  Normally, when such dirt adheres to the outer wall surface or the like, the paint is applied to the outer wall surface by painting to hide the dirt.

  In addition, as a method of removing dirt when the outer wall surface is a tile surface, a stubborn dirt portion that accumulates in the thickness direction of the tile surface is ground with a water sander, and the ground dirt is washed with water, and the dirt is washed away. Wet water on the tile surface, spray a weakly acidic cleaning solution to remove light dirt that adheres to the tile surface, and after the sprayed weakly acidic cleaning solution has entered the pores, cracks or joints, wash with water. A method has been proposed in which a weakly acidic cleaning solution and slight dirt on the surface are removed, and high-pressure hot water is sprayed and removed on dirt, which remains in fine holes, cracks, and joints (for example, Patent Document 1). reference).

JP 2013-241744 A

  In the case of maintenance by conventional paint painting, since the entire surface is painted, a scaffold is indispensable, resulting in high costs and a long construction period. In addition, since the paint used for paint coating contains resin and powder, it deteriorates due to ultraviolet rays. In addition, if the entire outer wall surface where the tile is used is painted with paint, the tile surface portion and joint portion which are different in color are painted in the same color, which may impair the texture of the tile.

  Moreover, in the technique of patent document 1, application is restrict | limited to the building whose outer wall surface is a tile surface. In addition, since the dirt accumulated on the outer wall surface is ground with a water sander, the substrate of the outer wall surface may be damaged.

  Further, the dirt attached to the outer wall surface described above is a stubborn dirt accumulated over time, and it has been difficult to sufficiently remove the dirt. Conventionally, the outer wall surface was washed with high-pressure water using a high-pressure washer. Although it is difficult to remove this dirt sufficiently with high-pressure water, there is no problem with conventional high-pressure water washing because it is premised on painting.

  On the other hand, in view of the above problems, the inventors of the present application sought a method capable of removing dirt more effectively than before, and repeated test research on a method for maintaining a building that has not existed before. Specifically, the inventor of the present application, as a result of research on the dirt adhering to the outer wall surface of the building, found that the dirt contains a lot of mold, and a cleaning method capable of sufficiently removing this dirt. As a result of repeated tests, it was found that this dirt can be removed by using a predetermined enzyme.

  An object of this invention is to provide the maintenance method of a building provided with the process of removing the stain | pollution | contamination adhering to structural surfaces, such as the outer wall surface of a building.

  A building maintenance method according to one aspect of the present invention includes a step A of spraying a cleaning liquid containing amylase on a component surface of a building, and a step B of washing out the cleaning liquid. Here, the “construction surface of the building” includes the surface and roof made of glass, blinds, etc., in addition to the outer wall surface of the building.

  According to this configuration, the dirt adhering to the component surface is decomposed and separated from the component surface by cleaning with the cleaning liquid containing amylase. The dirt on the component surface is sufficiently removed by washing away the dirt separated from the component surface. Thereby, it can be brought close to the original state before the dirt adheres.

  The reason why the soil can be effectively removed by the cleaning solution containing amylase is that the soil adhering to the component surface contains a lot of mold, that is, the main component of the mold is a polysaccharide, so that the amylase that decomposes the sugar. Is considered to work effectively.

  In addition, since paint coating is not an essential component, it is not essential to paint the entire surface of the component, and if the entire surface is not painted, the construction period can be shortened and the cost can be reduced. In the case of painting, it is necessary to paint the outer wall surface with relatively little dirt from the viewpoint of the overall beauty. However, in the present invention, it may be applied only to the outer wall surface with much dirt.

  Preferably, in this building maintenance method, the cleaning liquid further includes a lipase and a protease. According to this structure, the stain | pollution | contamination containing mold | fungi can be removed more effectively by using the washing | cleaning liquid containing the lipase and protease which decompose protein and fat.

  Further, in this building maintenance method, the cleaning liquid may contain a surfactant. Surfactant is the main component of detergent and promotes removal of dirt.

  Preferably, in the maintenance method of this building, the cleaning liquid is diluted with a cleaning liquid stock solution containing 30% to 60% of an enzyme containing amylase, lipase and protease, and 1% to 10% of a surfactant. Become. Here, the degree of dilution of the cleaning solution stock solution may be, for example, 5 to 60 times, depending on the dirt attached to the component surface. According to this structure, the dirt adhering to the structural surface of the building can be effectively removed.

  More preferably, in this building maintenance method, the cleaning solution is obtained by diluting a cleaning solution stock solution containing 45% of an enzyme containing amylase, lipase, and protease and 5% of a surfactant. The dilution degree of the cleaning solution stock solution may be, for example, 10 to 40 times. According to this structure, the dirt adhering to the structural surface of the building can be effectively removed.

  Preferably, in this building maintenance method, the pH of the cleaning liquid is 7.0 or more and 8.0 or less. According to this configuration, since the cleaning liquid is close to neutrality, the stimulation is not strong and the safety is high. In the household goods quality display method, a pH of 6.0 or more and 8.0 or less is considered neutral, and a pH of 7.0 or more and 8.0 or less is included. In addition, since PH is 7.0 or more and 8.0 or less, strictly speaking, it is neutral or almost alkaline. Alkaline separates amino acid bonds.

  Preferably, in this building maintenance method, the step A sprays the component surface with the coating agent in a foam state. According to this structure, since it sprays by spraying the cleaning liquid made into the bubble state, it becomes difficult to hang down in the sprayed structure surface rather than spraying in the liquid state. Therefore, the residence time in the composition of the cleaning liquid becomes longer and the cleaning effect is enhanced. As a result, the maintenance work time can be shortened.

  Preferably, in this building maintenance method, the step B is to wash away the cleaning liquid with high-pressure water. While it may be washed away with water while the operator rubs it by hand, it can be washed efficiently by using high-pressure water.

  Preferably, the building maintenance method includes a step C of spraying a silane-based coating agent on the component surface. According to this configuration, by performing the silane coating, it is possible to suppress the occurrence of dirt including mold and the influence of ultraviolet rays on the configuration surface after cleaning.

  Preferably, in the building maintenance method, the step C sprays the coating agent in a foam state. According to this structure, since it sprays in a foam state, the adhesiveness to a structure surface increases and the coating effect increases.

  The building maintenance method may include a step of repairing the component surface prior to step C. Repair the missing component surface by repair work. Here, the repair work includes repainting with paint and restoration of caulking around the window. In addition, the reason why the repair work is performed prior to the process C is that the repaired structural surface is naturally coated, and repairing after cleaning facilitates the color matching of the structural surface during repair. It is. That is, the color of the component surface may change before and after cleaning.

  The building maintenance method may include a step D of spraying a fluorine-based water repellent. According to this configuration, since the water-repellent film is formed on the configuration surface by the fluorine-based water repellent, it is possible to prevent water contamination on the configuration surface. In addition, when performing the process D together with the process C, it is desirable to perform the process D following the process C.

  According to the building maintenance method of the present invention, it is possible to effectively remove stains adhering to components such as the outer wall surface of a building using a cleaning liquid containing amylase.

It is a flowchart which shows the maintenance method of the outer wall surface of the building which is one embodiment of this invention. It is a figure which shows an example of the process of spraying a washing | cleaning liquid on an outer wall surface. It is a figure which shows an example of the process of washing away the washing | cleaning liquid of an outer wall surface with a high pressure water. It is a figure which shows an example of the process of spraying a coating agent on an outer wall surface. It is a figure which shows an example of the process of fixing a coating agent to an outer wall surface. It is a figure which shows an example of the process of washing away the excess coating agent. It is a figure which shows an example of the process of spraying a water repellent on an outer wall surface. It is a figure which shows an example of the process of fixing a water repellent to an outer wall surface. It is a figure which shows another Example which spreads a coating agent. It is the figure which compared the outer wall surface before implementation of a washing process, and after implementation.

  Hereinafter, although one embodiment concerning the present invention is described based on a drawing, the present invention is not limited to the following embodiment. Moreover, although the following embodiment demonstrates the case where the structural surface of a building is an outer wall surface of a building as an example, a structural surface is not limited to an outer wall surface.

<Maintenance method>
FIG. 1 is a flowchart showing a maintenance method for an outer wall surface of a building according to an embodiment of the present invention. As shown in FIG. 1, the maintenance method of the present embodiment includes, for example, four steps of cleaning S1-repair S2-clear coating S3-fluorine-based super water-repellent treatment S4. Hereinafter, each process is demonstrated in order. In summer, etc., water may be sprayed to cool the outer wall surface prior to the start of maintenance work.

(Washing process S1)
Prior to the cleaning step, a stock solution of a cleaning solution containing enzymes such as amylase, lipase, and protease is diluted by 30 times, for example, according to the degree of contamination on the outer wall surface, to prepare cleaning solution 1 used for the cleaning operation. In this embodiment, as an example of the cleaning solution stock solution, the enzyme is about 45%, the surfactant is about 5%, the other inactive components are about 50%, and the pH is 7.0 or more and 8 Adjusted to 0.0 or less. By diluting this 30 times, the pH of the cleaning liquid used approaches 7.0 neutrality.

  The stock solution of the cleaning solution is not limited to this, and may have other configurations such as 40% to 50% enzyme, 1% to 10% surfactant, and other components as inactive components. These ratios are all by weight. Moreover, you may use the washing | cleaning liquid which does not contain lipase and protease but contains amylase. Further, the dilution degree of the cleaning stock solution may be 5 to 60 times or the like according to the degree of contamination of the building surface, and is not limited to 30 times. Even with these configurations, dirt can be removed more than that using conventional high-pressure water.

  Then, the cleaning liquid 1 is put into the foam sprayer 2 and the cleaning liquid 1 is sprayed onto an inconspicuous portion of the outer wall surface and the work is started after confirming that there is a cleaning effect.

  FIG. 2A is an explanatory diagram illustrating an example of a process of spraying the cleaning liquid on the outer wall surface. FIG. 2B is an explanatory diagram illustrating an example of a process of washing out the cleaning liquid on the outer wall surface with high-pressure water. As shown in FIG. 2A, using the foam sprayer 2, the cleaning liquid 1 is sprayed on the outer wall surface in the form of bubbles. If necessary, use a tool such as a roller or brush to evenly extend the entire outer wall. Then, leave it for about 1 minute to promote the degradation action of the soil by the enzyme. In addition, the time to leave is not limited to 1 minute, and may be left for 1 minute or more.

  In this way, the outer wall surface is cleaned. In this embodiment, the cleaning liquid 1 is sprayed by a foam sprayer. However, depending on the location and size of the building construction surface, the cleaning liquid 1 is sprayed in a liquid or mist form, and a tool such as a roller or a brush is used. You may apply.

  As a result of this cleaning, dirt (such as scab, black mold, red mold, blue mold, and mildew mold) adhering to the outer wall surface is decomposed by the action of the enzyme and separated from the outer wall surface. In particular, according to the inventor's research, most of the dirt on the outer wall surface is considered to be caused by mold, so that the enzyme of the cleaning liquid 1 lifts and separates it from the outer wall surface to effectively remove the dirt on the outer wall surface. Can be removed. It is also possible to rub the outer wall surface so as to remove dirt after spraying and leaving the cleaning liquid 1 as necessary.

  Moreover, in this embodiment, since the cleaning liquid 1 is sprayed and sprayed on the outer wall surface in a bubble state, the adhesion of the cleaning solution in the bubble state to the outer wall surface is enhanced. Moreover, by spraying in a foam state, the cleaning liquid 1 is less likely to hang down along the outer wall surface, and the residence time that adheres (adheres) to the outer wall surface becomes longer. Therefore, the cleaning effect is enhanced by increasing the adhesion of the cleaning liquid 1 and increasing the residence time.

  As shown in FIG. 2B, the outer wall surface is washed with water following the above washing. That is, the cleaning liquid 1 is washed away from the outer wall surface together with the dirt separated from the outer wall surface. Since the dirt is separated from the outer wall surface, it can be easily removed together with the cleaning liquid 1 from the outer wall surface by washing with water. In this embodiment, the cleaning with water is performed with high pressure water using the high pressure washer 3. In addition, the high-pressure washing machine 3 of this embodiment is a high-pressure washing machine in which high-pressure water is ejected while the head portion rotates.

  Washing with water is not limited to high-pressure water, and it may be washed away with water manually by the operator. The cleaning method is appropriately selected according to the cleaning range. Cleaning with high-pressure water saves manual labor, and since the water hits the outer wall at high pressure, the cleaning effect is high. If the dirt is stubborn, repeat the cleaning operation. In this way, after the cleaning operation is completed, the outer wall surface is dried by leaving it for about one day. FIG. 6 is a diagram comparing the outer wall surface before and after the cleaning process, and it can be seen that the dirt on the outer wall surface is firmly removed by the cleaning process of this embodiment.

(Repair process S2)
Prior to the next coating process, the operator inspects the outer wall surface from which dirt has been removed by visual inspection or by using an inspection tool to determine whether there is a need for repair. Since the dirt on the outer wall of the building has been removed by the cleaning operation, it is inspected whether there are places that need repair, such as parts that have deteriorated (for example, places where repainting is required, or places where caulking is deteriorated around windows). Has become easier. If there is a need for repair, the worker will perform repair work by a well-known method. If there is no repair point, repair is not necessary.

(Coating process S3)
Next, as shown in FIG. 3A, a coating agent 4 having an ultraviolet protection, water resistance, mold prevention, and antifouling effect is sprayed on the outer wall surface. In this embodiment, a silane-based coating agent 4 is used. This silane-based coating agent 4 is a coating agent containing silicon components such as organosilane, silica borate, polysilazane, and glass. This silane-based coating agent 4 is a coating agent having almost the same safety as water, unlike paint. The silane monomolecular film is 10 nm. Moreover, it is also possible to use a primer having adhesive force in place of the silane-based coating agent.

  As in the case of the cleaning liquid 1, the coating agent 4 is sprayed in a foam state by a foam sprayer 5 and evenly applied to the entire outer wall surface so as not to sag using a tool such as a roller or a brush as necessary. Spread (see FIG. 3B). Then, the coating agent 4 remaining on the outer wall surface is washed away with water (see FIG. 3C). Thereby, the coating effect is exhibited over the entire outer wall surface. By using a silane-based coating agent, generation of dirt including mold is suppressed, and the outer wall surface is protected from ultraviolet rays.

  After that, before the water repellent treatment, the outer wall surface is left for a certain time (for example, about 1 to 2 hours). This coating operation is preferably repeated twice or more in order to enhance the coating effect.

(Water repellent treatment step S4)
As a finish, as shown in FIG. 4A, a fluorine-based water repellent 6 is sprayed on the outer wall surface after coating using a sprayer 7. If necessary, using a tool such as a roller or a brush, the water repellent 6 is uniformly spread over the entire outer wall surface so as not to hang down (see FIG. 4B). As a result, the entire outer wall surface is subjected to water repellent treatment, and contamination by water can be prevented. In the present embodiment, the water repellent treatment is applied to the outer wall surface. However, when there is a glass portion such as a window on the component surface, it is desirable to omit the water repellent treatment for the glass portion.

<Effect of this embodiment>
According to the above-described method, by cleaning the outer wall surface with the cleaning liquid 1, dirt including mold is separated from the outer wall surface and washed away, so that the outer wall surface can be sufficiently removed. This makes it possible to perform maintenance that removes dirt by washing instead of repainting and hiding dirt like maintenance by painting.

  Therefore, since painting is not an essential component, maintenance can be performed without damaging the outer wall design. It is suitable for outer walls that use multicolor, outer walls that use tiles and bricks, outer walls that have a distinctive texture, antique-like outer walls, etc.

  Also, in the case of maintenance by painting, it is necessary to paint the entire surface such as the outer wall surface, and it is usually necessary to install a scaffold. However, in this embodiment, the scaffold is not essential, and dirt is attached. It is also possible to work on the component surface.

  As a result, cost reduction and construction period reduction can be achieved. Specifically, in the case of painting, for example, it takes about one month including undercoating and drying of the paint, but if the maintenance of this embodiment is applied, the construction period can be shortened from 1/3 to 1/10. In terms of cost, it can be reduced to about 1/2 to 1/3.

  In addition, since the paint used for coating usually contains resin and powder, it deteriorates due to ultraviolet rays. However, the cleaning liquid 1 of this embodiment does not contain resin, and is composed of naturally derived components. , Not easily deteriorated by ultraviolet rays. Furthermore, since the outer wall surface is washed and coated with a silane-based coating agent, deterioration due to ultraviolet rays can be further suppressed, and adhesion of mold-containing dirt can also be suppressed. In addition, the water-repellent treatment can suppress contamination due to moisture.

  In addition, the cleaning liquid 1 used in the present embodiment has a pH of 7.0 or more and 8.0 or less and is close to neutrality. This PH is in a neutral range in the household goods quality display method. Further, strictly speaking, this PH is more alkaline than 7.0, so that it effectively works against dirt containing mold.

<Other embodiments>
As described above, the preferred embodiments of the present invention have been described with reference to the drawings, but various additions, modifications, or deletions can be made without departing from the spirit of the present invention. For example, in the above embodiment, the maintenance is performed on the outer wall surface of the building, but the present invention may be applied not only to the outer wall surface but also to a component surface including a glass surface such as a window or a component surface such as a roof. .

  In the above embodiment, the maintenance method includes all of the cleaning process, the repair process, the coating process, and the water repellent treatment process. However, the present invention is not limited to this, and some of these processes, such as maintenance only for the cleaning process, are omitted. Maintenance is also possible. Therefore, such a thing is also included in the scope of the present invention.

  In the above embodiment, as a part of the maintenance, the silane-based coating is sprayed on the outer wall surface of the building. However, in the case of a new building, no dirt including mold is generated. The silane-based coating is applied to the building surface such as the outer wall and the inner wall to suppress the occurrence of mold-containing dirt and protect the outer wall from ultraviolet rays. Is possible.

  Furthermore, as shown in FIG. 5, by spraying the silane-based coating agent 8 onto the internal structure of the new building using the sprayer 9, the generation of dirt including mold on the structure is suppressed. It is also possible to suppress the deterioration of the structure over time.

DESCRIPTION OF SYMBOLS 1 Cleaning liquid 2 Foam sprayer 3 High pressure washing machine 4 Coating agent 5 Foam sprayer 6 Water repellent 7 Sprayer 8 Coating agent 9 Sprayer

Claims (12)

A maintenance method for a building,
Step A for spraying a cleaning liquid containing amylase on the building surface;
Step B for washing away the washing liquid;
Characterized by comprising,
Building maintenance method. The washing solution further comprises lipase and protease;
The building maintenance method according to claim 1. The cleaning liquid contains a surfactant,
The building maintenance method according to claim 1 or 2. The cleaning liquid is
Dilute a washing solution stock solution containing 40% to 50% of an enzyme containing amylase, lipase, and protease and 1% to 10% of a surfactant.
The building maintenance method according to claim 2. The cleaning liquid is
Dilute a washing solution stock solution containing 45% of enzyme containing amylase, lipase and protease and 5% of surfactant.
The building maintenance method according to claim 2. The cleaning liquid has a pH of 7.0 or more and 8.0 or less.
The building maintenance method according to any one of claims 1 to 5. In the step A, the cleaning liquid is foamed and sprayed onto the component surface.
The building maintenance method according to any one of claims 1 to 6. In the step B, the cleaning solution is washed away with high-pressure water.
The building maintenance method according to any one of claims 1 to 7. A step C of spraying a silane-based coating agent on the component surface;
The building maintenance method according to any one of claims 1 to 8. In step C, the coating agent is foamed and sprayed.
The building maintenance method according to claim 9. Prior to step C, the step of repairing the component surface is provided.
The building maintenance method according to claim 9 or 10. Comprising a step D of spraying a fluorine-based water repellent;
The building maintenance method according to any one of claims 1 to 11.