JPH11236994A - Heat insulating waterproof panel concurrently serving as form and heat accumulating tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating waterproof panel concurrently serving as a form capable of being used as part of a heat accumulating tank or a water storage tank by laminating a plate-like resin foam body, a fiber-reinforced inorganic board, and a thermoplastic resin sheet in sequence. SOLUTION: A thermoplastic resin is used as a foam body for a plate-like resin foam body as a heat insulating material, and hard polyvinyl chloride is used for it in view of the easiness of foaming and heat resistance. A cement board containing glass fibers is preferably used for a fiber-reinforced inorganic board for maintaining the rigidity of a panel and the strength and water resistance of the board itself. Hard polyvinyl chloride is used for a thermoplastic resin sheet forming a waterproof layer in view of heat resistance and water resistance. They are laminated in this order, and an epoxy adhesive having good water resistance is used between the layers. For installing a heat accumulating tank, the tank is formed with the panels with a resin sheet face kept inside, a normal form is arranged, concrete is placed on the foam body side, then the form is removed, and a waterproof material is stuck to panel joints. The tank integrated with a building can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a concrete formwork when installing a concrete heat storage tank, a water storage tank, or the like in a building, and also as a formwork that can be used as a heat insulating and waterproofing material for the heat storage tank as it is. The present invention relates to an insulated waterproof panel and a heat storage tank.

[0002]

2. Description of the Related Art In recent years, with increasing awareness of energy saving, it has been encouraged to provide heat storage equipment for cooling and heating high-rise buildings or the entire region. Of the heat storage equipment, the heat storage tank is a tank type,
Although there is a tank type or the like, it is cost-effective to convert a part of the building (the frame) as it is to the tank. Thermal storage tanks are usually
It is installed mainly in the basement space of the concrete frame of the building.

However, the above-mentioned heat storage tank is mainly composed of a method of forming a tank by attaching a heat insulating material and a waterproof material to a concrete wall after the building is completed. A resin foam heat insulating material was adhered with an adhesive, a waterproof sheet was adhesively bonded to the surface of the heat insulating material, and an anchor bolt was partially driven into concrete to supplement the adhesive strength. The tank constructed in this way, for example, by seepage pressure from the concrete side of groundwater,
The waterproof sheet swells or peels off, causing damage or water leakage.

[0004] In the conventional method, after the concrete body is completed, the material is carried into the substantially closed tank from the working hole and the bonding operation is performed manually, so that not only the work is complicated, but also the bonding operation is performed. There were also problems with measures such as removal of the odor of the agent and solvent vapor, and this was not a preferable method in terms of work environment hygiene. Furthermore, bonding with an adhesive does not provide sufficient sheet bonding strength, and in particular, a heat storage tank that is in contact with water or hot water for a long period of time often requires inspection for water leakage and the like.

[0005] In the method of joining the waterproof sheet directly on the heat insulating material, there is a method in which the waterproof sheets are joined by heat fusion after joining. However, this method has a disadvantage that the resin foam insulating material is melted. Despite the difficulty, it was hard to say that it was a durable heat storage tank.

Further, as described above, in the case where the waterproof sheet is directly joined to the resin foam insulation, the strength of the resin foam insulation itself is low, so that when an external force is applied to the sheet, the resin foam insulation is not provided. The interface was easily damaged, and there were many troubles in which the sheet was peeled off carelessly during construction.

[0007]

SUMMARY OF THE INVENTION The inventor of the present invention uses a formwork used for installing a heat storage tank or a water storage tank in a building at the time of building the building as a heat insulating material for hot or cold water without removing it after construction. As a result of intensive studies, a mold formed by sequentially laminating and joining a hard plate having large bending strength and a thermoplastic resin sheet to be a waterproof layer to a plate-like resin foam conventionally used as a concrete formwork. The inventors have found that the frame can achieve the above-mentioned object of the present invention, and have completed the present invention. That is, an object of the present invention is to provide a heat insulating tank and a waterproof insulating panel that can be used as a part of a heat storage tank, a water storage tank, or the like without removing the heat insulating layer and the waterproof layer after the concrete casting work. This is to provide a heat storage tank using a panel.

[0008]

SUMMARY OF THE INVENTION Accordingly, the gist of the present invention is to provide a heat-insulating waterproofing device also serving as a concrete casting mold formed by sequentially laminating a plate-like resin foam, a fiber-reinforced inorganic plate and a thermoplastic resin sheet. A panel and a heat storage tank using the panel as a heat insulating and waterproofing material.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A plate-like resin foam which directly contacts concrete of a formwork and heat-insulating waterproof panel of the present invention and which acts as a heat insulating material is usually used by forming a thermoplastic resin into a foam. From the viewpoint of ease of foaming, heat resistance, water resistance, economy, etc., for example, a thermoplastic resin such as hard polyvinyl chloride, polystyrene, polyethylene or chlorinated polyethylene is used, and the foaming ratio is particularly limited. Although it is not something, considering foam strength and heat insulation,
The thickness is preferably in the range of 35 times, and in consideration of economy, the thickness is desirably in the range of 15 to 100 mm.

On the surface of the plate-shaped resin foam which is not laminated to the fiber-reinforced inorganic plate described later, that is, on the non-laminated surface, at the time of placing the concrete, an anchor effect is produced between the concrete and the ready-mixed concrete. 5-10mm in width, 2-depth
It is desirable to provide a groove of 10 mm. The grooves are preferably provided vertically and horizontally, and the shape thereof is desirably a shape in which the grooves are continuous vertically and horizontally, such as a cross-girder shape, a turtle-shape, and a continuous ripple pattern. In particular, when the heat-insulating waterproof panel combined with the formwork is assembled in the shape of a tank, it is most desirable that a groove is formed to pass upward from the bottom of the tank. The groove exerts an anchor effect when concrete is cast,
Also, since concrete does not completely fill the grooves,
It functions to discharge spring water and seepage water that accumulates at the bottom from the gap.

The fiber-reinforced inorganic plate, which is one of the constituent elements of the present invention, is important for maintaining the rigidity of the heat-insulating waterproof panel which also serves as a formwork, and for the purpose of maintaining the strength and water resistance of the fiber-reinforced inorganic plate itself. For example, a cement board containing at least one kind of fiber selected from glass fiber, vinylon fiber, carbon fiber and the like is preferable. Cement wood blanket,
Although a fiber-containing calcium silicate plate and the like can be used, the above-mentioned cement plate is usually used in view of strength and water resistance. The thickness of the fiber reinforced inorganic plate is strength, weight,
Those having a range of 5 to 10 mm are suitable from the viewpoint of cost.

The thermoplastic resin sheet for forming the waterproof layer of the heat-insulating waterproof panel also serving as a mold according to the present invention is not particularly limited as long as it is a thermoplastic resin. Hard polyvinyl chloride, soft polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene or chlorinated polyethylene. The use of these resin sheets is recommended from the viewpoint that the sheets are firmly heat-sealed with each other.

Further, the thermoplastic resin sheet may be a sheet in which a woven or non-woven fabric layer is provided in the middle of the above-mentioned thermoplastic resin. That is, a method of manufacturing a film from a thermoplastic resin, arranging and laminating a woven or nonwoven fabric between at least two films, and a method of sandwiching and laminating a woven or nonwoven fabric while extruding a plurality of thermoplastic resins. The thermoplastic resin sheet is manufactured by the method described above. Placed in the middle of thermoplastic resin, as a cloth to be laminated, glass fiber,
Woven or non-woven fabrics such as vinylon fiber and polyester fiber can be used. The thickness of the thermoplastic resin sheet is suitably in the range of 1 to 5 mm from the viewpoint of strength and economy.

The heat-insulating waterproof panel which also serves as a mold of the present invention is constructed by laminating the above-mentioned plate-shaped resin foam, fiber-reinforced inorganic plate and thermoplastic resin sheet in this order. The layers are usually joined with an adhesive. As the adhesive, it is preferable to use an adhesive having good water resistance such as an epoxy-based or vinyl acetate emulsion-based adhesive. The thickness of the heat-insulating and waterproofing panel also serving as a mold is not particularly limited, but a desired thickness is used depending on the type of a tank to be constructed, the degree of heat-insulating ability, and the like.
mm.

The heat-insulating and waterproofing panel which is also used as a formwork of the present invention, when used as a formwork, is preferably processed into a ladle or a substantially real structure so that the panels are easily joined to each other. In addition, a gap is hardly generated at a joint portion between panels, and there is no leakage of cast concrete. Further, when the slightly tang portion is formed of a fiber-reinforced inorganic plate, the hot air does not reach the plate-like resin foam when the thermoplastic resin sheet is heat-sealed. Can be prevented.

In order to install a heat storage tank, a water storage tank and the like using the heat insulating / waterproof panel also serving as the mold of the present invention, the heat insulating / waterproofing panel also serving as the mold is combined so that the surface of the thermoplastic resin sheet faces inside. Is formed, and if necessary, a normal formwork is placed facing and separated from the surface of the plate-shaped resin foam, and then concrete is cast on the side of the plate-shaped resin foam. After curing the concrete, remove the normal formwork if necessary, and apply a waterproof material such as tape of the same material as the thermoplastic resin sheet to the part (seam) combining the formwork and heat-insulating waterproof panel by heat sealing or using an adhesive. To make the inside of the tank completely waterproof. The waterproof material is desirably a long tape having a U-shaped or V-shaped central portion in cross section in order to absorb a shift of a mold frame, a distortion of a thermoplastic resin sheet, and the like.

When combined with the form-insulating waterproof panel, it is preferable to store spring water or exuded water around the bottom of the tank or to provide a water passage so that the water flows. It is desirable that the grooves provided in the plate-shaped resin foam of the heat-insulating waterproof panel be communicated with each other, a forced drainage pipe is provided along the plate-shaped resin foam, and this is opened to the water passage. The grooves provided in the plate-shaped resin foam guide the water that has penetrated the concrete into the water channel,
Continuous or intermittent operation of the pump forces it out of the drain.

As a result, even when the groundwater level is high, it is possible to reduce the pressure of the seepage water from the concrete surface to the surface of the insulated waterproof panel also serving as the formwork, and the panel is constantly pressed against the concrete side by the internal water storage. As a result, deformation and swelling due to external pressure of the heat-insulating waterproof panel and the thermoplastic resin sheet also serving as a mold are prevented, and the durability of the heat storage tank and the like is increased.

[0019]

EXAMPLES Next, the present invention will be described with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the invention. Example 1 A plate-like polystyrene foam having an expansion ratio of 30 times (25 mm
Thickness), glass fiber-containing lightweight cement board (manufactured by Toyo Asano Co., Ltd., Kenkolite board, 8 mm thick) and a composite sheet with a glass fiber woven fabric embedded in a soft vinyl chloride resin (Ryomei Construction Materials Co., Ltd., Diaforte E, 2mm thickness)
Were laminated using a vinyl acetate resin emulsion-based adhesive to form a heat-insulating waterproof panel also used as a mold. On the surface of the plate-like polystyrene foam, a groove of 5 mm in width and 5 mm in depth was formed.
It was provided in a grid pattern at 0 cm intervals. The end of the heat-insulating waterproof panel also used as a formwork had a ladle shape.

Example 2 A plate-like rigid vinyl chloride resin foam having an expansion ratio of 25 times (30
Epoxy adhesive bonding of carbon fiber-containing cement board (1.5% by volume mixed with carbon fiber (Mitsubishi Chemical's diamond lead staple fiber) at 1.5% by volume, 5mm thickness) and hard vinyl chloride resin sheet (1.5mm thickness) Using a chemical agent (EP001, manufactured by Cemedine Co., Ltd.), a laminated heat-insulating waterproof panel was prepared. The end of the panel was formed into a slightly real shape, and an elongated plate (10 mm in width) of a carbon fiber-containing cement plate having a thickness of 5 mm was finally formed. On the surface of the plate-shaped rigid vinyl chloride resin foam, grooves having a width of 10 mm and a depth of 8 mm were provided in a grid pattern at intervals of 20 cm in length and width.

Comparative Example 1 A plate-like polystyrene foam having an expansion ratio of 30 (25 mm
Thickness) of the soft vinyl chloride sheet (2 m) used in Example 1.
m) was laminated with a vinyl acetate resin emulsion-based adhesive to prepare a panel.

Comparative Example 2 A plate-like rigid vinyl chloride resin foam having an expansion ratio of 25 times (30
mm thick) and a hard vinyl chloride resin sheet (1.5 mm thick) with an adhesive for vinyl chloride resin (C-2, manufactured by Cemedine Co., Ltd.)
01) to form a panel.

<Construction of heat storage tank> The heat insulating and waterproofing panel combined with the mold prepared in the examples and the comparative examples is combined with a cubic tank shape having a side of 0.5 m with the thermoplastic resin sheet surface as an inner surface. Formwork was made of plywood so that the interval was 5 cm, and ready-mixed concrete was poured into the gap.
After solidification of the concrete, the strip of the thermoplastic resin sheet used in each of the Examples and Comparative Examples was hot-air-sealed at the joint of the panel,
Waterproofed.

<Performance Test> The construction of the heat storage tank constructed as described above and the entire heat storage tank were immersed in hot water at 60 ° C.
After three and six months, the situation was observed, and the results are shown in Table 1.

[0025]

[Table 1]

Example 3 Formwork and heat-insulating waterproof panel 90 cm ×
A cubic box with a bottom of 90 cm was assembled using five pieces, and a hard vinyl chloride resin gutter having a C-shaped cross section was attached around the bottom of the outside of the box. The connection point between the gutter and the groove is covered with a nonwoven fabric, which allows water to flow, but prevents the entry of ready-mixed concrete.Three pipes are lined up in the central vertical groove of each wall of the four-sided plate-shaped resin foam. The drainage pipe made of a profiled extruded product made of polyethylene and having a rectangular cross section was embedded so that one end of the drainage pipe opened to the gutter and the other end came to the upper edge of the basin. 50m outside of this measure
After forming an outer frame with plywood having a thickness of 12 mm so as to have an interval of m, fresh concrete was poured in the meantime. After the concrete was solidified, the joint was waterproofed in the same manner as in the heat storage tank of Example 1. Next, a pump was connected to the center of the three pipes of the drainage pipe, water was injected from the other pipes, the pump was operated and suctioned, and it was confirmed that the gutter worked effectively.

Comparative Example 3 A 12 mm thick plywood form was combined with a 50 mm gap.
Concrete is poured into the gap and the inside dimension is 94cm on a side
Created a cube-shaped measure. After solidification of concrete, foamed polystyrene plate of 30mm thickness (expansion ratio 30 times) on the inner surface
And a 1.5-mm-thick hard vinyl chloride resin sheet was stuck thereon so that the resin sheets overlap each other by about 20 mm to form a heat storage tank. Epoxy adhesive (EP-00 manufactured by Cemedine Co., Ltd.)
1) was used, and an adhesive for vinyl chloride resin (C-201 manufactured by Cemedine Co., Ltd.) was used for the overlap portion.

<Evaluation of heat storage tank construction time and physical properties during water storage>
The water tank construction time created in Example 3 and Comparative Example 3 and the physical properties at the time of water storage were evaluated. For the evaluation of the physical properties at the time of storing the water, the water storage tank was immersed in warm water at 60 ° C. so that the upper 5 cm of the water was above the surface of the water, and water was poured to the inside to a depth of 60 cm. The water pressure difference between inside and outside when standing is 250
mm water column. The results are shown in Table-2. In addition,
In the tank of Example 3, the pump connected to the drain pipe was operated for 5 minutes / 1 hour to drain the water accumulated in the water passage.

[0029]

[Table 2]

[0030]

According to the present invention, the heat-insulating waterproof panel which is also used as a formwork can be used as a concrete formwork, and since the plate-like resin foam functions as a formwork as it is, and it is not necessary to remove it after casting concrete, It works as a heat insulator when installing a thermal storage tank in a part of a building. In addition, the thermoplastic sheet serves as a waterproof sheet, and since a fiber-reinforced inorganic plate is present between the plate-like resin foam and the thermoplastic resin sheet, the rigidity is given to the formwork heat-insulating waterproof panel, and The seam of the heat-insulating waterproof panel combined with the form can be easily processed by heat fusion without melting the resin foam. Therefore, the construction period can be greatly reduced, the damage during construction is small, and the durability of the completed water tank is excellent.

Further, in the heat insulating and waterproofing panel which is also used as a formwork of the present invention, by providing a groove in the plate-like resin foam, the permeated water from the concrete side can be discharged from the drain pipe through the water passage. Therefore, the groundwater pressure from the concrete side can be reduced, the deformation of the heat-insulating waterproof layer can be prevented, and the waterproof layer can be prevented from being damaged. Therefore, the formwork and heat-insulating waterproof panel of the present invention can be very advantageously used for construction of a water storage tank or a heat storage tank built integrally with a building.

Claims (14)

[Claims] 1. A heat insulating and waterproofing panel also serving as a concrete casting formwork in which a plate-like resin foam, a fiber-reinforced inorganic plate, and a thermoplastic resin sheet are sequentially laminated. 2. The non-laminated surface of the plate-shaped resin foam has a width of 5-1.
2. The heat-insulating waterproof panel for formwork according to claim 1, wherein a groove having a depth of 0 mm and a depth of 2 to 10 mm is provided. 3. The mold according to claim 1, wherein the plate-like resin foam is made of polyvinyl chloride, polystyrene, polyethylene or chlorinated polyethylene, and has an expansion ratio of 10 to 35 times. Combined heat-insulated waterproof panel. 4. The thermal insulation and waterproofing according to claim 1, wherein the fiber reinforced inorganic plate is a cement plate containing at least one selected from glass fiber, vinylon fiber and carbon fiber. panel. 5. The heat-insulating and waterproofing panel for use as a mold according to claim 1, wherein the thermoplastic resin sheet is made of hard polyvinyl chloride, soft polyvinyl chloride, polyethylene or chlorinated polyethylene. 6. The heat-insulating and waterproofing panel also serving as a formwork according to any one of claims 1 to 5, wherein the thermoplastic resin sheet is a sheet having a woven or non-woven fabric layer interposed therebetween. 7. The thickness of each of the plate-like resin foam, the fiber-reinforced inorganic plate and the thermoplastic resin sheet is 15 to 100 m.
7. The heat-insulating waterproof panel also serving as a formwork according to any one of claims 1 to 6, wherein the diameter ranges from 5 to 10 mm and from 1 to 5 mm. 8. The heat-insulating waterproof panel for formwork according to any one of claims 1 to 7, wherein each end of the panel is processed into a ladle or slightly real shape. 9. A tank is formed by combining the heat-insulating and waterproofing panel with formwork according to any one of claims 1 to 7 so that the thermoplastic resin sheet surface is on the inside, and a plate-like resin foam is formed. A heat storage tank constructed by casting concrete on the side of the body. 10. The heat storage tank according to claim 9, wherein a water passage for storing spring water or seepage water is formed along a bottom of the tank formed by combining the heat insulating and waterproofing panel also serving as a mold. 11. The heat storage tank according to claim 10, wherein a groove provided on the non-laminated surface of the plate-shaped resin foam communicates with the water passage. 12. The heat storage tank according to claim 10, wherein a forced drain pipe is opened in the water passage. 13. A heat-sealing waterproof panel is combined with a formwork and heat-insulating waterproof panel so that the surface of the thermoplastic resin sheet faces inward to form a tank, and a waterproof material is heat-sealed to the combined portion. 12. The method for manufacturing a heat storage tank according to any one of the above items 12. 14. The method for manufacturing a heat storage tank according to claim 13, wherein the waterproof material is a long tape having a U-shaped or V-shaped cross section at the center.