JP5322541B2 - Slate building material repair and reinforcement processing method - Google Patents

Description

  This invention relates to a slate building material repair / reinforcement treatment method for a slate roof or slate outer wall containing an asbestos fiber component, which enhances energy saving / refreshing effect, heat shielding / insulating effect, and reinforces the slate, The present invention relates to a repair / reinforcement processing method for slate building materials that further enhances the prevention of deterioration and, in some cases, prevents asbestos scattering as much as possible through an asbestos scattering prevention process.

  As is well known, slate building materials containing asbestos fiber components are corrugated slate, flat slate, makeup slate, etc., and are used for existing buildings (public facilities, company factories, warehouses, school buildings, station buildings, or general houses). It is often used for roofing materials and outer wall materials, and many of them are in existence.

  This type of slate building material has deteriorated over the years due to acid rain, sulfur dioxide, air pollution, etc., and asbestos fiber components are exposed on the slate surface, so it is scattered by the wind and rain. The situation is easy, and the degree of danger to the human body is extremely great. For such asbestos-containing slate, which is also frequently used as a general building material, it is possible to prevent the asbestos from scattering, repair the slate building, and further change the structure to high heat insulation and heat insulation. Although it is very significant in protecting the surrounding residents from `` asbestos disaster '', it has a big problem that if asbestos treatment is done without sufficient knowledge, asbestos is scattered. .

  In one example, when repainting the surface of a decorative slate for roofs that has been used for 26 years, when high-pressure washing was performed without sufficient knowledge, as a result of measuring the asbestos air concentration during that work, 43.4 liters / liter Asbestos components were measured at an average of 11.6 liters / liter even at a distance of 2 meters, exceeding the 10 liter / liter standard value on the border of adjacent land established by the Ministry of the Environment. The asbestos component was detected from the As described above, the asbestos treatment causes a result that the asbestos is scattered depending on the cleaning method.

  Therefore, at present, there are few effective proposals for repairing / reinforcing slate building materials while preventing scattering of asbestos to the slate roof building materials and slate outer wall building materials containing the asbestos fiber component. Is the actual situation.

  Therefore, the present invention takes into consideration the extremely dangerous situation that the asbestos fiber component is exposed and eventually scattered due to deterioration due to various factors with respect to the slate roof building material and the slate outer wall building material containing the asbestos fiber component described above. In order to respond to this asbestos scattering prevention, repair and reinforcement treatment of asbestos-containing slate, more preferably, an asbestos scattering prevention agent for slate building materials capable of extremely effectively preventing this asbestos scattering, and using this It is to provide a repair / reinforcement method for an asbestos-containing slate that covers the slate after being subjected to an asbestos scattering prevention treatment.

In order to achieve the above-described object, the present invention specifically provides a repair / reinforcement processing method for a slate building material including a slate roof or a slate outer wall in which a slate plate is attached to a plurality of beam means extending generally in parallel. There,
For a heat insulating plate member having high heat insulating property and combustion resistance, a metal thin plate is bonded to one surface thereof, and a composite covering material provided with a lap seaming means along an orthogonal lap seaming direction is prepared,
To prevent scattering of asbestos in the construction, and wetting the construction part, then, include cleaning steps to further cleaning to the construction f the partial path filter with a vacuum cleaner or water circulation cleaner,
The composite covering material is made into a lap joint shape through the lap seaming means with the metal sheet surface facing outward, and a waterproof means is interposed at the lap seaming portion of each composite covering material, Installed on the exterior of the slate roof or slate outer wall,
Wherein a crest of the slate, and, at a location position of said beam means, interposed the chips preventing scattering means, the fixing means Mounting becomes to fix the composite covering material slate outer surface,
Ventilation means including a part of the slate wave groove is provided on the back side of the laid composite covering material, and in the warm season (summer season), the heated air is allowed to escape on the roof to keep cool air, The winter season) constitutes a repair / reinforcement treatment method for slate building materials characterized by possessing an air flow control function that keeps the air flowing while keeping the air flowing.

Further, in this invention, the invention according to claim 2 is the slate building material repair / reinforcement processing method according to claim 1, wherein the composite covering material includes a flat composite covering material and an end piece. It is characterized by comprising a composite covering material for laying a part and a composite covering material for covering a ridge covering the ridge.

Furthermore, in this invention, the invention according to claim 3 is the slate building material repair / reinforcement processing method according to claim 1 or claim 2, wherein the heat insulating plate member in the composite covering material has a high performance. phenolic foam, extruded polystyrene foam, beads based polystyrene foam, polyurethane foam, polypropylene foam, and is characterized in that the polyethylene form or Ranaru.

Furthermore, in this invention, the invention according to claim 4 is the repair / reinforcement processing method for the slate building material according to any one of claims 1 to 3, wherein the metal thin plate in the composite covering material is: Garubaniumu steel, is characterized in that the other plating or thin steel plate or Ranaru by painting.

  Furthermore, in this invention, the invention according to claim 5 is the repair / reinforcement processing method for the slate building material according to any one of claims 1 to 4, wherein the lap joint means in the composite covering material However, when the composite covering material is laid in a butt shape in the vertical direction and the horizontal direction, the composite covering material is formed by a single layer portion formed of the protruding portion of the thin metal plate along the orthogonal seaming direction. The single layer portion is laid so as to cover the adjacent composite covering material.

  Further, in this invention, the invention according to claim 6 is the slate building material repair / reinforcement processing method according to any one of claims 1 to 5, wherein the waterproof means is the composite covering material. It consists of the waterproof adhesive provided in at least any one of the back surface of the part of the single layer in and the outer surface of the metal thin plate in the adjacent composite covering material.

  Furthermore, in this invention, the invention according to claim 7 is the slate building material repair / reinforcement processing method according to any one of claims 1 to 6, wherein the air passage means is a composite covering material. A corrugated air passage portion formed by the slate corrugated groove covered by the air passage portion and a branch air passage portion along the ridge provided on the back surface of the composite covering material for covering the wing, The air passage portions communicate with each other to form an air passage that circulates outside air, so that the heated air escapes onto the roof during the warm season (summer season) and keeps the cool air, and the air during the cold season (winter season). It is characterized by having an air flow adjustment function that keeps warm air by suppressing the flow of air.

Furthermore, in this invention, the invention according to claim 8 is a repair of a slate building material including a slate roof or a slate outer wall in which a slate plate containing an asbestos fiber component is attached to a plurality of beam means extending in parallel. -Reinforcement processing method,
To prevent scattering of asbestos in the construction, and wetting the construction part, then, a cleaning step to further cleaned path filter with a vacuum cleaner or water circulation cleaner f the construction part,
A step of preparing an asbestos treatment agent for preventing the asbestos component from scattering from the slate building material;
Applying 0.01 to 3 kg / m ^{2 of the} asbestos treatment agent to the construction part of the slate building material after the cleaning;
For a heat insulating plate member having high heat insulating property and combustion resistance, a metal thin plate is bonded to one surface thereof, and a composite covering material provided with a lap seaming means along an orthogonal lap seaming direction is prepared,
The composite covering material is made into a lap joint shape through the lap seaming means with the metal sheet surface facing outward, and a waterproof means is interposed at the lap seaming portion of each composite covering material, Installed on the exterior of the slate roof or slate outer wall,
Wherein a crest of the slate, and, at a location position of said beam means, interposed the chips preventing scattering means, the fixing means Mounting becomes to fix the composite covering material slate outer surface,
Ventilation means including a part of the slate wave groove is provided on the back side of the laid composite covering material, and in the warm season (summer season), the heated air is allowed to escape on the roof to keep cool air, The winter season) constitutes a repair / reinforcement treatment method for slate building materials characterized by possessing an air flow control function that keeps the air flowing while keeping the air flowing.

  Furthermore, in this invention, the invention described in claim 9 is the slate building material repair / reinforcement processing method according to claim 8, wherein the asbestos treatment agent is an aqueous synthetic resin emulsion and / or mainly a metal. It is a mixed liquid obtained by mixing a hydroxide and / or a metal salt of a strong base and a weak acid, a natural paste or resin binder, a lightweight aggregate, and water.

According to the repair / reinforcement processing method of the slate building material of the present invention configured as described above,
(1) A composite covering material provided with a lap seaming means along a perpendicular lap seaming direction by bonding a thin metal plate to one surface of a heat insulating plate member having high heat insulation and combustion resistance. Prepare
(2) The composite covering material is lap-joined through the lap seaming means with the metal sheet surface facing outward, and waterproof means are interposed at the lap seaming portion of each composite covering material. , Installed on the outer surface of the slate roof or slate outer wall,
(3) The composite covering material is fixed to the outer surface of the slate by mounting fixing means such as tapping bolts at the position where the beam means is located at the position where the beam means is located. And
(4) It is configured so as to provide air passage means including a part of the wave groove of the slate on the back side of the laid composite covering material,
In particular, when repairing / reinforcing slate buildings due to deterioration over time, the use of a composite covering material consisting of a laminate of a heat insulating plate member and a thin metal plate improves high heat insulation, combustion resistance, and strength. To improve fashionability,
The composite covering material is laid in a lap joint form by lap joint means provided along the lap joint direction, and the waterproofness is improved by joining them with the waterproof means, and by means of fixing means such as tapping bolts. When fixing, the effect of high safety and energy saving / refreshing work is achieved by interposing anti-scattering means such as chips.
Furthermore, by providing the air passage means on the back side of the laid composite covering material, it is possible to make a highly heat-shielding repair / reinforcement structure, and it can be said that this also works extremely effectively.

Furthermore, in the present invention, before the repair / reinforcement process,
(1) A cleaning process in which the construction part is moistened to prevent asbestos from being scattered during construction, and then the construction part is cleaned with a vacuum cleaner with a hepar filter or a water circulation type vacuum cleaner,
(2) Synthetic resin emulsion aqueous solution and / or mainly composed of metal hydroxide and / or strong base and weak acid that acts as a base adjustment layer to prevent adhesion of asbestos components from slate building materials and ensure adhesion Preparing an asbestos treatment agent comprising a mixed solution obtained by mixing a metal salt, a natural paste or resin binder, a lightweight aggregate, and water;
(3) A step of applying 0.01 to 3 kg / m ^{2 of the} asbestos treatment agent to the construction portion of the slate building material after cleaning,
By performing a series of asbestos scattering prevention treatment processes,
In particular, prior to treatment with the treatment agent, the treatment construction section should be sufficiently moistened, and then treated by a process of cleaning with a vacuum cleaner with a hepa filter or a water circulation cleaner. In that the asbestos scattering from the treatment construction department can be reliably suppressed, and asbestos scattering during the construction period of the asbestos scattering prevention process, and of course, the asbestos scattering after processing can be surely prevented. After performing this asbestos scattering prevention treatment, it is more effective by covering the slate building material with the composite covering material formed by bonding the heat insulating plate member and the metal thin plate described above. Prevents asbestos from splashing reliably and effectively, and prevents serious harm caused by asbestos splash To.

Hereinafter, the slate building material repair / reinforcement processing method according to the present invention will be described in detail based on specific embodiments shown in the drawings.
FIG. 1 is a schematic perspective view showing a state in which repair / reinforcement processing of a slate building material according to the present invention is performed, with a part thereof broken, and FIG. 2A is a proposal for an existing building with a corrugated slate. FIG. 2B is a schematic cross-sectional view showing a state in which the composite covering material is laid and fixed in a direction crossing the wave of the corrugated slate. FIG. 2B is a schematic cross-sectional view taken along the line 2B-2B in FIG. FIG. 3 shows an example in which the slate building material repair / reinforcement processing method according to the present invention is applied to a slate roof, and FIG. 3A is a schematic side sectional view thereof, FIG. 3B. Fig. 4A is a schematic perspective view showing a preferred example of a composite covering material for wing covering, and Fig. 4A is a composite covering material comprising a heat-insulating plate member and a thin metal plate and provided with a lap joint means. Outline showing an example A perspective view, FIG. 4B, which back side schematic perspective view from FIG. 4C, interposed waterproof means is a side view showing a state where combined splicing the composite covering material.

  The construction object to which the repair / reinforcement processing method of the slate building material according to the present invention is applied is to an existing slate building material, and the slate building material is a building material containing an asbestos fiber component, and a corrugated slate building material, It is a general term for building materials that are provided as flat slate building materials and decorative slate building materials and are frequently used as roof building materials or exterior wall building materials.

  The existing roof and the outer wall to which the slate building material is applied usually have a plurality of hooks as shown in FIGS. 1 to 3, for example, a corrugated slate plate 1 and a plurality of beam means 2 extending generally in parallel. It is constructed by a structure that is fixed via the bolt means 3. Usually, when the corrugated slate plate 1 is used as a roofing material, for example, in a building as shown in FIG. 3, corrugated valley lines and mountain lines are arranged so as to extend from the roof ridge toward the eaves. A part of the corrugation of the adjacent slate plate 1 is lap spliced, and a part of the lower edge of the slate plate 1 adjacent to the upper part of the slate plate 1 is overlapped and spliced. It is fixed to the beam means 2 by hook bolt means 3.

  In the example shown in FIGS. 1 to 3, the beam means 2 is made of C channel steel, or in other examples, is made of H type steel or I type steel. On the other hand, as shown in FIGS. 2A and 2B, the hook bolt means 3 includes a hook bolt 4 having a hook portion 4a on one end side and a screw portion 4b on the other end side, a nut 5, and a large washer 6. And a large packing 7.

The slate building material repair / reinforcement processing method according to the present invention is applied to the slate building material 1 in the construction state as described above.
First, in the present invention, a composite covering material 10 as shown in FIG. 4, a composite covering material 10A for laying an end of an eaves or the like as shown in FIG. 3A, and a composite cover for a ridge covering as shown in FIG. 3B A ring material 10B is prepared. This composite covering material 10, 10A and 10B is comprised by the composite_body | complex of the heat insulation plate 11 and the metal thin plate 12 bonded together to the one surface 11a of this heat insulation plate 11 with the adhesive agent etc. suitably.

  The heat insulating plate 11 in the composite covering materials 10, 10 </ b> A and 10 </ b> B is a material having high heat insulating properties and combustion resistance, such as high performance phenol foam, extruded polystyrene foam, bead-based polystyrene foam, polyurethane foam, polypropylene foam, polyethylene. A foam or the like is formed into a plate shape having a thickness of about 15 to 30 mm. More preferably, the heat insulating plate 11 in the composite covering material 10 is a high performance phenol foam heat insulating plate.

  As the above-mentioned high performance phenol foam as the heat insulating plate 11, for example, Neoma Foam (registered trademark) manufactured by Asahi Kasei Construction Materials Co., Ltd. is suitable. This neomafoam is effective as a constituent material of the present invention in that it has high heat insulation and excellent workability.

  The composite covering material 10 according to the present invention is formed by bonding a thin metal plate 12 to one surface 11a of the heat insulating plate 11 described above. In the present invention, the metal thin plate 12 is a thin plate having a thickness of about 0.5 to 1.5 mm, and for example, a galvanium (galvalume) steel plate is suitable. Furthermore, the example of the metal thin plate 12 is not limited to the above-described example as long as it is an appropriate metal thin plate by plating coating having excellent durability and weather resistance.

  In the present invention, as shown in FIG. 4, the composite covering material 10 basically has a rectangular shape with an appropriate size, and is in a matrix shape in the overlapping seam direction (vertical direction and horizontal direction). It is the thing of the structure laid in. The composite covering material 10 includes lap seaming means 13 along the orthogonal lap seaming directions. As an example, the lap seaming means 13 includes a heat insulating plate having a width dimension w (about 3 to 10 cm) along the first side 14 and the second side 15 intersecting the first side 14. 11 is cut off and formed by overlapping seamed portions 16a and 16b made of only the thin metal plate 12.

  In the present invention, the composite covering material 10 is not limited to a flat plate as shown in FIG. 4, but is adapted to the structure of an existing slate building, for example, as shown in FIG. Structures with different shapes and configurations such as the composite covering material 10A for laying the edge part covering the eaves portion in a bent shape, and the composite covering material 10B for building cover as shown in FIG. It is prepared in advance according to the structure of the object. As shown in FIG. 3B, the wing covering composite cover material 10B crosses the air passage 27 along the ridge constituting a part of the air passage means 25 and the air passage 27 so as to cover the wing. A branch ventilation path 28 extending along the inclination direction of the composite covering material 10B is provided.

In the slate building material repair / reinforcement processing method according to the present invention, the mounting fixing means such as the composite covering materials 10, 10A and 10B prepared as described above, and the fixing tapping bolts 18 for fixing the composite covering materials 10, 10A and 10B. 17 is brought to the construction site.
First, in this invention,
(1) A treatment method for covering a slate building material with a composite covering material prepared in advance after performing only pretreatment such as wetting and cleaning of the construction part,
(2) There is a processing method including a wetting and cleaning process for a construction part, an asbestos scattering prevention process with an asbestos scattering prevention treatment agent, and a covering process for covering a slate building material with a composite covering material prepared in advance.

  In the case of the above (1), first, the construction part is fully moistened at the construction site. The wetting of the construction part is performed by flowing water or the like, and it is necessary to avoid the spraying of pressurized water and the like so that the asbestos component does not scatter. After the construction part is sufficiently moistened, remove large debris and earth and sand, and use a vacuum cleaner with a HEAP filter, a water circulation cleaner, a water reflux cleaner, etc. Then, the construction part of the slate building material is cleaned. In the present invention, wetting and cleaning of the construction part described above is one of the extremely important processes, and this process can never be excluded. Wetting of the construction part greatly contributes to prevention of scattering of asbestos components in the cleaning stage of the construction part, and cleaning of the construction part greatly contributes to laying and fixing the composite covering material.

  Thereafter, the composite covering material 10 prepared in advance is laid on the outer surface of the slate roof or the slate outer wall in the form of lap seaming through the lap seaming means 13 with the thin metal plate surface 12 facing outward. Place it. In this case, the overlap joint portion 16a extending in the length direction of the adjacent composite covering material 10 is overlapped and the overlap joint portion 16b extending in the width direction of the composite cover material 10 is adjacent to the lower composite cover. Laying while lap-joining the upper edge of the ring material 10. Furthermore, a waterproof means 24 is interposed during the lap joint construction of the composite covering material. The waterproof means 24 is constituted by a waterproof adhesive provided on at least one of the back surface of the single layer portion in the composite covering material and the outer surface of the metal thin plate in the adjacent composite covering material. A specific example of the waterproof means is an industrial double-sided adhesive tape made of butyl or the like.

  In the present invention, the composite cover ring material 10 is laid on the slate plate 1 while being lap-joined as described above, and the composite cover is provided by the mounting fixing means 17 such as a fixing tapping bolt 18 prepared in advance. A ring material 10 is fixed on the slate plate 1. The fixing tapping bolt 18 includes a bolt head 19 on one end side and a tapping drill 20 and a screw portion 21 connected thereto on the other end side. The bolt head 19 is provided with a plus-shaped groove for a plus driver, a minus-shaped groove for a minus driver, or a hexagon-shaped groove for a hexagon wrench. When the composite covering material 10 is fixed by the fixing tapping bolt 18, a large washer or a large packing 22 is used in combination.

  The procedure for fixing the composite covering material 10 with the mounting fixing means 17 such as the fixing tapping bolt 18 is as follows. First, a hole of about 6 mmφ is opened to the front of the slate with a suction drill. In this case, a vacuum cleaner with a hepa filter is used for chip suction.

  Furthermore, in this invention, in order not to drop the chips into the room, a viscous material such as urethane is injected into the hole opened in the previous procedure. Next, a pilot hole of about 3 mmφ is made in the beam means 2 made of C-type channel steel or the like. Thereafter, the composite covering material is fixed to the beam means 2 while tapping with the fixing tapping bolt 18.

  The position at which the fixing tapping bolt 18 is screwed is, for example, a ridge portion of a waveform slate and a position where the beam means 2 is positioned. An operator prepares the fixing tapping bolt 18 and an electric screwdriver (not shown) corresponding thereto, and screws the fixing tapping bolt 18 with the electric screwdriver. At this time, since a tapping drill 20 is provided at the tip of the fixing tapping bolt 18, it passes through the composite covering material 10, the slate plate 1, and the beam means 2 made of C channel steel, and The screw portion 21 of the tapping bolt 18 is screwed and fixed to the C channel steel material. In this case, the chips 23 fall into the C channel steel material and do not scatter to the outside.

  After laying and fixing the composite covering materials 10 and 10A on the slate plate 1 in the existing building, the building covering member 10B is fixed to the building portion in the building as shown in FIG. By laying and constructing in this way, as shown in FIG. 3A, the air passage means 25 including the slate wave groove in part on the back side of the laid composite covering material can be formed.

  This air passage means 25 is provided in a corrugated air passage portion 26 formed by a slate corrugated space covered by a composite covering material, and a ridge provided on the back surface of the composite covering material 10B for covering the wing. The air passage portion 27 and the branch air passage portion 28 are formed along the air passage portion 27, and the air passage portions communicate with each other to form an air passage through which the outside air flows. In the state in which the composite covering materials 10, 10A and 10B described above are laid on the slate roof, as shown by the arrow 25 in FIG. , Formed on the back side of the composite covering material. According to the air passage means 25 formed in this way, in the warm season (summer season), the heated air escapes onto the roof, keeping the temperature in the building room low, and in the cold season (winter season), It possesses an air flow control function that keeps warm air by suppressing air flow. The air flow adjusting function in such an air passage structure has a low function when the covering material is composed only of a metal plate. As in the present invention, the covering material is made of the heat insulating plate member 11 and the metal. By using a composite covering material composed of the thin plate 12, the heat shielding property and the heat insulating property are enhanced, and the air flow adjusting function is enhanced.

  In a heat shielding test described later, a test with a test body having a structure in which the air passage means 25 by the wave groove of the slate plate is left open (see FIG. 7B), and the air passage means 25 by the wave groove of the slate plate are sealed. As a result of the test with the test body having a closed structure (see FIG. 7C), the test body having the vent passage means 25 exhibits much higher heat shielding properties than the test body without the vent passage means. It was.

  On the other hand, in the above paragraph [0028], as shown in (2), after the wet and cleaning process of the construction part and the asbestos scattering prevention treatment process with the asbestos scattering prevention treatment agent, the slate plate is covered with the composite covering material. A processing process including a process to perform will be described.

  First, the specific Example of the asbestos scattering prevention processing agent for slate building materials is described. In a preferred embodiment of the present invention, the asbestos scattering prevention treatment agent for a slate building material wets and cleans a portion (usually, the entire slate building material) in the slate building material, and then, with respect to the slate building material. By applying, it is comprised by what aims at prevention of scattering of an asbestos fiber component.

  In one example, the asbestos treating agent is composed of a synthetic resin emulsion aqueous solution that prevents the asbestos fiber component from scattering from the slate building material and acts as a base adjustment layer to ensure adhesion. More specifically, the asbestos treating agent is an acrylic resin, vinyl acetate resin, ethylene vinyl acetate resin, styrene butadiene rubber (SBR), urethane resin, or the like.

  On the other hand, in another example, the asbestos treatment agent is mainly added with a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, a lightweight aggregate, and optionally added. It is comprised by what mixed the fiber material used and water.

  In the present invention, as the asbestos treating agent, the treating agent described in the above paragraph [0040] is used alone, or the treating agent described in the above paragraph [0041] is used alone, and both may be used in combination. .

  The asbestos treating agent described in the above paragraph [0041] is preferably 30 to 60% by weight of metal hydroxide and / or strong base and weak acid metal salt, and 5 to 25% by weight of natural glue or resin binder. And 0.5 to 10% by weight of lightweight aggregate, 0 to 3% by weight of fiber material added as necessary, and 10 to 60% by weight of water.

  According to a more preferred specific example of the asbestos treating agent applied to the present invention, the asbestos treating agent described in the above paragraph [0041] includes 45% by weight calcium carbonate, 5% by weight lime, 15% It is a mixture of 1% by weight acrylic resin, 1% by weight lightweight aggregate, 1.5% by weight alkali-resistant glass fiber, and 32.5% by weight water.

  Furthermore, plant or animal natural glue is added to the asbestos treating agent described in the above paragraph [0041] applied to the present invention. As the natural paste, plant paste such as starch, ginkgo, and vines, or animal paste such as gelatin, collagen and glue are effective. As the organic or inorganic fibers, natural fibers such as hemp, manila hemp and cellulose, organic fibers such as rayon, nylon, polypropylene and aramid fibers, or inorganic fibers such as glass fiber and carbon fiber are effective.

  Further, in the present invention, the asbestos treating agent obtained by the above-described constitution may be one obtained by adding an appropriate amount of synthetic resin, or further, by adding a small amount of natural rubber or synthetic rubber. It may be.

  As the synthetic resin, for example, vinyl acetate, ethylene-vinyl acetate copolymer and the like are effective, and as the synthetic rubber, styrene butadiene rubber and the like are effective.

  Lightweight aggregate is mixed in the asbestos treating agent. As this lightweight aggregate, for example, pearlite, shirasu balloon, bead foam polystyrene and the like are effective.

Next, the asbestos scattering prevention process for the slate building material according to the present invention will be described in detail along the procedure.
In this invention, the asbestos processing agent which becomes the above-mentioned structure is prepared beforehand. The asbestos treating agent comprises a synthetic resin emulsion aqueous solution and / or mainly a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, a lightweight aggregate, and, if necessary. Is a treatment agent formed by mixing a fiber material to be added and water.

  In this invention, first, the above-mentioned asbestos treating agent is prepared. After preparing each asbestos treating agent, the construction portion is sufficiently wetted as a whole for the slate building material to be treated for preventing asbestos scattering at the construction site. The wetting of the construction part is performed by flowing water or the like, and it is necessary to avoid the spraying of pressurized water and the like so that the asbestos component does not scatter. After the construction part is sufficiently moistened, remove large debris and earth and sand, and use a vacuum cleaner with a HEAP filter, a water circulation cleaner, a water reflux cleaner, etc. Then, the construction part of the slate building material is cleaned. In the present invention, wetting and cleaning of the construction part described above is one of the extremely important processes, and this process can never be excluded. Wetting of the construction part greatly contributes to prevention of scattering of asbestos components in the cleaning stage of the construction part, and cleaning of the construction part facilitates and ensures application processing of the asbestos treatment agent in the next process. Contribute greatly.

After the cleaning described above is finished, the asbestos treating agent is applied. The asbestos treating agent is applied by applying about 0.01 to 3 kg / m ^{2 of the} above-prepared asbestos treating agent (undiluted solution) using a brush, a roller, or a spray gun as a reference. Then, harden the vicinity of the surface of the construction part to form a primer layer.

After the above asbestos treatment agent application operation, if necessary, another asbestos treatment agent application operation described in the above paragraph [0034] is performed on the slate building material when the asbestos treatment agent is dried. The other asbestos treatment agent is applied by applying a standard about 0.1 to 10 kg / m ² using a pressure-type spraying machine, a lysing gun, a lever, or the like to repair and reinforce the asbestos-containing building material.

  Thereafter, as described in detail in the first embodiment, the slate plate 1 is completely covered by laying the composite covering material 10. Since this covering step is the same as that described in the first embodiment, a description thereof will be omitted.

Next, the results of various tests performed on the specimen treated with the asbestos scattering prevention treatment agent according to the present invention will be described.
1. Bending strength test (1) Test method From a slate plate with a thickness of 6 mm, 5 plates with a width of 19 mm and a length of 150 mm were cut out, subjected to the above-described treatment, air-dried for 1 week, and then loaded with a span length of 50 mm using an autograph. A bending test was performed at a speed of 10 mm / min.
For comparison, an old slate plate that was not treated at all was also tested under the same conditions.
(2) Test results The test results are shown in FIG. FIG. 5 is a graph of displacement (mm) against bending load (kg · f). As a result of this test, an old slate plate that has not been treated at all breaks with a bending load of 140 (kg · f), whereas in the specimen subjected to the present treatment, the fracture bending load is about 210 ( kg · f), an increase of about 50%.

2. Thermal Insulation Test (1) Test Method A 250 mm × 300 mm plate was cut out from a slate plate having a thickness of about 6 mm, subjected to the above-described processing, and air-dried for 1 week, and then the heat receiving table (heat receiving table) shown in FIG. The size of the surface was set to 160 mm × 230 mm. A 200 W heat source is placed at a position 250 mm away from the test body and irradiated with heat for 2 hours. A temperature sensor was set on the surface and the separation surface (position 14 mm away in the case of the back surface) of the test body, and the temperature change was measured.
For comparison with the test on the specimen according to the present invention (see FIG. 7B), the test on the old slate plate that has not been treated at all (see FIG. 7A) and the wave groove of the specimen of the structure of the present invention are sealed A test was conducted on the test specimen that prevented air in the groove from moving (see FIG. 7C). FIG. 7B is a graph showing a temperature change in a structure in which air can move as a slate wave groove, and FIG. 7C seals the slate wave groove, and the air in the wave groove moves. It is a graph showing the temperature change in the structure which is not.
The back surface temperature after 2 hours was compared and used as an index of heat insulation with the slate plate.
(2) Test results Each drawing in FIG. 7 represents a change in temperature of each of the above-described test specimens, and shows a change in the surface temperature and a change in the back surface temperature, respectively. In this test, the back surface temperature represents heat insulation and heat insulation.
As a result of this test, the back surface temperature (see FIG. 7B) of the test body according to the present invention is about 25 ° C. lower than that of the untreated slate plate (see FIG. 7A). It was about 6 ° C. lower than the test specimen (see FIG. 7C) where the air did not move. From this result, it can be seen that it is extremely effective to provide the air passage means 25 and release the air in the wave groove as in the present invention in order to improve the heat shielding property and the heat insulating property.

FIG. 1 is a schematic perspective view showing a state in which the slate building material according to the present invention has been repaired and reinforced, partially broken away. FIG. 2A is a schematic cross-sectional view showing a state in which the composite covering material according to the present invention is laid and fixed to an existing building with a corrugated slate in a direction crossing the wave of the corrugated slate, and FIG. FIG. 2B is a schematic cross-sectional view taken along line 2B-2B in FIG. 2A. FIG. 3A is a schematic side sectional view showing an example in which the slate building material repair / reinforcement processing method according to the present invention is applied to a slate roof, and FIG. 3B shows a preferred example of a composite covering material for building covers. It is a schematic perspective view. FIG. 4A is a schematic perspective view showing an example of a composite covering material that is formed by bonding a heat insulating plate member and a thin metal plate and includes a lap joint means, and FIG. FIG. 4C is a side view showing a state in which the composite covering material is overlapped and joined with a waterproof means interposed therebetween. FIG. 5 is a graph showing the bending strength test result for the slate plate treated with the asbestos scattering prevention treatment agent for the slate building material according to the present invention. FIG. 6 is a schematic explanatory view showing an example of a thermal insulation test apparatus when a thermal insulation test is performed on a slate plate treated with an asbestos scattering prevention treatment agent for the slate building material according to the present invention. FIG. 7 is a graph showing the temperature change of the surface temperature and the back surface temperature of the specimen in the heat shielding test, FIG. 7A is a graph showing the temperature change of an old slate plate that has not been treated at all, and FIG. FIG. 7C is a graph showing a temperature change in a test body to which the asbestos scattering prevention agent for slate building material according to the present invention is applied, in which the wave groove of the slate acts as a ventilation groove, and FIG. 7C is a slate according to the present invention. It is the test body which gave the asbestos scattering prevention processing agent for building materials, Comprising: It is a graph showing the temperature change in the structure which sealed the wave groove of the slate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slate plate 2 Beam means 3 Hook bolt means 4 Hook bolt 4a Hook part 4b Screw part 5 Nut 6 Large washer 7 Large packing 10 Composite covering material 10A Composite covering material 10B eaves part Composite covering material DESCRIPTION OF SYMBOLS 11 Heat insulation plate 11a One surface 12 of a heat insulation plate 12 Metal thin plate 13 Overlap joining means 14 1st edge | side 15 2nd edge | side 16a, 16b Overlapping seam part 17 Attachment fixing means 18 Fixing tapping bolt 19 Bolt head 20 Tapping drill 21 Screw part 22 Large packing 23 Chip 24 Waterproofing means 25 Air passage means 26 Air passage part 27 by slate wave groove 27 Air passage part 28 along the building 28 Branch air passage part

Claims (9)

A method for repairing and reinforcing a slate building material including a slate roof or a slate outer wall to which a slate plate is attached to a plurality of beam means extending in parallel,
For a heat insulating plate member having high heat insulating property and combustion resistance, a metal thin plate is bonded to one surface thereof, and a composite covering material provided with a lap seaming means along an orthogonal lap seaming direction is prepared,
To prevent scattering of asbestos in the construction, and wetting the construction part, then, include cleaning steps to further cleaning to the construction f the partial path filter with a vacuum cleaner or water circulation cleaner,
The composite covering material is made into a lap joint shape through the lap seaming means with the metal sheet surface facing outward, and a waterproof means is interposed at the lap seaming portion of each composite covering material, Installed on the exterior of the slate roof or slate outer wall,
Wherein a crest of the slate, and, at a location position of said beam means, interposed the chips preventing scattering means, the fixing means Mounting becomes to fix the composite covering material slate outer surface,
Ventilation means including a part of the slate wave groove is provided on the back side of the laid composite covering material, and in the warm season (summer season), the heated air is allowed to escape on the roof to keep cool air, In winter, the slate building material repair / reinforcement treatment method is characterized by possessing an air flow control function that keeps the air flowing while suppressing air flow. The composite covering material includes a flat composite covering material , a composite covering material for laying an end portion, and a composite covering material for covering a ridge covering a ridge. The repair / reinforcement processing method of the slate building material according to claim 1. Heat insulating plate member in the composite covering material, high-performance phenolic foams, extruded expanded polystyrene, beads based polystyrene foam, polyurethane foam, polypropylene foam, to claim 1 or claim 2, wherein the polyethylene Form or Ranaru Repair / reinforcement processing method for the listed slate building materials. The sheet metal in the composite covering material, Garubaniumu steel, other plating or repair and reinforcement treatment method slate building material according to any one of claims 1 to 3, wherein the thin steel plate or Ranaru by painting .   The lap splicing means in the composite covering material is a single piece formed of a protruding portion of the thin metal plate along the orthogonal lap splicing direction when the composite covering material is laid in a butt shape in the vertical direction and the horizontal direction. It consists of what is formed by the part of a layer, and it lays | lays so that the part of the said single layer may be covered on the adjacent composite covering material, The Claim 1 characterized by the above-mentioned. Slate building material repair and reinforcement processing method.   The waterproof means comprises a waterproof adhesive provided on at least one of a back surface of a single layer portion in the composite covering material and an outer surface of a metal thin plate in an adjacent composite covering material. The repair / reinforcement processing method of the slate building material in any one of Claims 1-5.   The air passage means includes a corrugated air passage portion formed by a slate wave groove covered with a composite covering material, and an air passage along a ridge provided on the back surface of the composite covering material for covering the ridge. Each of the vent passages communicates with each other and forms a vent passage through which the outside air circulates, so that warm air escapes over the roof during the warm season (summer season). The slate building material according to any one of claims 1 to 6, wherein the slate building material is maintained and has an air flow control function for keeping warm air by suppressing air flow in the cold season (winter season). Reinforcement processing method. A method for repairing and reinforcing a slate building material including a slate roof or a slate outer wall to which a slate plate containing an asbestos fiber component is attached to a plurality of beam means extending generally in parallel,
To prevent scattering of asbestos in the construction, and wetting the construction part, then, a cleaning step to further cleaned path filter with a vacuum cleaner or water circulation cleaner f the construction part,
A step of preparing an asbestos treatment agent for preventing the asbestos component from scattering from the slate building material;
Applying 0.01 to 3 kg / m ^{2 of the} asbestos treatment agent to the construction part of the slate building material after the cleaning;
For a heat insulating plate member having high heat insulating property and combustion resistance, a metal thin plate is bonded to one surface thereof, and a composite covering material provided with a lap seaming means along an orthogonal lap seaming direction is prepared,
The composite covering material is made into a lap joint shape through the lap seaming means with the metal sheet surface facing outward, and a waterproof means is interposed at the lap seaming portion of each composite covering material, Installed on the exterior of the slate roof or slate outer wall,
Wherein a crest of the slate, and, at a location position of said beam means, interposed the chips preventing scattering means, the fixing means Mounting becomes to fix the composite covering material slate outer surface,
Ventilation means including a part of the slate wave groove is provided on the back side of the laid composite covering material, and in the warm season (summer season), the heated air is allowed to escape on the roof to keep cool air, In winter, the slate building material repair / reinforcement treatment method is characterized by possessing an air flow control function that keeps the air flowing while suppressing air flow.   The asbestos treating agent comprises a synthetic resin emulsion aqueous solution and / or mainly a metal hydroxide and / or a strong base and a weak acid metal salt, a natural glue or resin binder, a lightweight aggregate, and water. The repair / reinforcing treatment method for slate building materials according to claim 8, wherein the slate building material is a mixed solution.

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