JP2023177694A - Water proof structural wall, water tank, and method for constructing water tank - Google Patents

Abstract

To provide a waterproof structural wall, a water tank, and a method for constructing a water tank that can be easily constructed.SOLUTION: A waterproof structural wall 100 surrounding the water tank has a lightweight panel 110 erected from an installation surface 200 as a frame. The lightweight panel 110 is joined to a lightweight panel 110 disposed next to it in the circumferential direction. Abutment surfaces 111 of the lightweight panels 110 are provided with cutout recesses 112 along the vertical direction, respectively. By abutting the abutment surfaces 111 of the two lightweight panels 110, a through hole 113 is formed from the opposing cutout recesses 112. In the through hole 113A, a support member 140 that supports the lightweight panel 110 is erected from the installation surface 200, and a bonding cement molding that joins the lightweight panels 110 and the support member 140 is filled. In the waterproof structural wall 100, a waterproof coating layer 150 is provided on the side surface of the lightweight panel 110 which is the inner side.SELECTED DRAWING: Figure 1

Description

Application for application of Article 30, Paragraph 2 of the Patent Act Exhibition date April 15, 2020 Exhibition name Exterior x Garden Exhibition 2022 Venue Makuhari Messe Hall 4-5 2-1 Nakase, Mihama-ku, Chiba City

The technical field of the present specification relates to a waterproof structural wall that is easy to construct, a water tank using the waterproof structural wall, and a method for constructing the water tank.

Conventionally, as a water storage tank in which a waterproof structural wall is used, Patent Document 1 discloses a swimming pool that includes a wall member made of a concrete wall and a coating member that covers the boundary between the wall surface and the bottom surface of the wall member. Are listed. Furthermore, Patent Document 2 describes a swimming pool in which natural stone is used for wall members.

JP2021-092048A International Publication WO2020/193635 Publication

Conventional waterproof structural walls use concrete walls or natural stones as wall members, and are constructed entirely of heavy materials, which poses a problem in that they cannot be easily constructed.

The problem to be solved by the technology of the present specification is to provide a waterproof structural wall, a water tank, and a method for constructing a water tank that can be easily constructed. purpose.

The waterproof structural wall according to the embodiment of the present specification is a waterproof structural wall surrounding a water tank, and includes:
The framework is a lightweight panel erected along the circumference of the water tank,
The lightweight panel and the lightweight panel disposed adjacent to the water tank in the circumferential direction are joined,
A notch recess along the vertical direction is provided on the abutting surface where the two lightweight panels are joined, respectively,
By abutting the abutting surfaces of the two lightweight panels, a through hole is formed from the opposing notch recesses,
A support member that supports the lightweight panel is erected from the installation surface in the through hole, and a bonding cement molding that joins the lightweight panels and the support member is filled,
A waterproof coating layer may be provided on the side surface of the lightweight panel that is inside the water tank.

According to the waterproof structure wall according to the embodiment of the present specification, by filling the through hole with the bonding cement molding, the lightweight panels and the support member can be bonded to each other, and the waterproof structure wall of the water tank can be formed. Moreover, since the waterproof coating layer is provided on the side surface of the lightweight panel that is on the inside of the waterproof structure wall of the water tank, waterproofness can be imparted to the inside of the waterproof structure wall of the water tank. Therefore, the waterproof structure wall according to the embodiment can be easily constructed.

Further, in the above-mentioned waterproof structure wall, a caulking material may be filled in the abutting part between the parts of the abutting surface where the two lightweight panels join, other than the notch recess.

According to this, the abutting portion where the two lightweight panels are joined is filled with caulking material, so that the waterproofness of the abutting portion can be improved.

Here, the water tank according to the embodiment is a water tank provided with the above-mentioned waterproof structural wall,
The caulking material is filled in a connecting portion where the bottom surface formed on the installation surface of the water storage tank and the lightweight panel are connected,
The waterproof coating layer may be integrally formed on the side surface and the bottom surface of the lightweight panel that forms the inside of the water tank.

According to this, the waterproofness of the water tank can be improved.

Further, in the water tank, the elongation rate (ASTM D-412) of the waterproof coating layer may be 100% or more.

According to this, the waterproof coating layer can follow deformation due to thermal expansion of the water tank, vibrations caused by external factors, etc., so that the waterproofness of the water tank can be further improved.

Further, in the water tank, a top protective layer may be provided on the surface of the waterproof coating layer.

According to this, deterioration of the waterproof coating layer can be suppressed.

Here, the construction method of the water tank according to the embodiment is the construction method of the water tank described above,
an erecting step of erecting the support member on the installation surface along the periphery of the water tank;
The lightweight panels are each installed along between the plurality of upright supporting members, and the supporting members are inserted into the through holes formed between the installed lightweight panels, so that the lightweight panels are joined to each other. an installation step of adhering the contact portion with the caulking material, adhering the connection portion where the lightweight panel and the bottom surface are connected with the caulking material, and installing the lightweight panel;
a filling step of filling the through hole with a slurry of a bonding cement composition forming the bonded cement molded article;
a coating step performed after the filling step, in which a resin forming the waterproof coating layer is applied to the side surface of the lightweight panel that is the inside of the water tank and the bottom surface of the water tank;
It is characterized by having the following.

According to the water tank construction method of the embodiment, through-holes are formed between the lightweight panels, and by filling the through-holes with a slurry of the bonding cement composition, the lightweight panels and the support member can be joined to each other. Therefore, it can be made to have excellent workability.

Furthermore, the water tank construction method may include, after the installation step, a replenishment step of replenishing the abutting portions where the lightweight panels join together from the inside of the water tank by applying caulking material. .

According to this, the caulking material is filled without any gaps in the abutting portions where the lightweight panels are joined, so that the waterproofness of the abutting portions can be improved.

According to the waterproof structural wall, water tank, and water tank construction method of the present specification, construction can be performed easily.

FIG. 2 is an image diagram of a longitudinal section of an example of a pool as a water storage tank including a waterproof structure wall according to the first embodiment. FIG. 2 is a sectional view taken along line II-II in FIG. 1 with a partially enlarged view. 3 is a sectional view taken along line III-III in FIG. 2. FIG. FIG. 2 is a perspective view showing a joint portion of lightweight panels that constitute a waterproof structural wall. FIG. 2 is a plan cross-sectional view of a joint part of a lightweight panel during construction. FIG. 7 is an image diagram of a vertical cross section of an example of a pool as a water storage tank including a waterproof structure wall according to the second embodiment.

Hereinafter, a waterproof structural wall, a water tank provided with a waterproof structural wall, and a method for constructing a water tank according to an embodiment of the present specification will be described. The waterproof structure wall of the embodiment is used as a wall as a structure surrounding a water tank. The water tank of the embodiment includes a pool used for swimming and bathing, a bathtub used for bathing the whole body and feet, a pond used for raising fish and other ornamental objects as necessary, and an aquarium used for storing water. , etc. In the embodiment, a pool used for swimming and bathing will be described as an example.

As shown in FIG. 1, the pool 1 as a water tank including the waterproof structure wall 100 of the first embodiment has a waterproof structure wall 100 surrounding the pool 1 and a bottom surface 201 that is the bottom of the pool 1. A waterproof coating layer 150 is integrally formed on the side surface and bottom surface 201 of the waterproof structure wall 100 provided inside the pool 1. Here, the orientation of the pool 1 is as shown in FIG. 1. Up and down is the top and bottom of the state where the pool 1 is installed. direction, and the lateral direction is the left-right direction. In the drawings, F indicates front, B indicates rear, U indicates top, D indicates bottom, L indicates left, and R indicates right. Moreover, the inside of the pool 1 may be expressed as the inside or the outside, and the direction in which the waterproof structural wall 100 is installed may be expressed as the circumferential direction with the center of the pool 1 as the reference.

The waterproof structural wall 100 surrounding the pool 1 has a framework made up of a plurality of rectangular lightweight panels 110 erected from a bottom surface 201 cast in concrete on the installation surface 200 . It is supported by a supporting member 140 provided therein.

As shown in FIGS. 2 and 4, the lightweight panels 110 form a continuous waterproof structural wall 100 that closes the outer periphery of the pool 1 by joining the abutting surfaces 111 of adjacent lightweight panels 110 to each other.

As shown in FIG. 4, the lightweight panels 110 forming the waterproof structural wall 100 have cutout recesses 112 with a rectangular cross section along the vertical direction formed in the abutting surfaces 111 to which the panels are joined, so that they are adjacent to each other in the circumferential direction. By abutting the abutting surfaces 111 of the lightweight panels 110 against each other, a vertical through hole 113 is formed from the opposing notch recesses 112. As shown in FIG. 2, the lightweight panels 110 at the corners of the pool 1 are joined as the waterproof structure wall 100 by butting the ends of the surfaces (the surfaces perpendicular to the thickness direction) of one lightweight panel 110. A cutout recess 112 is provided along the vertical direction at the location where the slit is located.

The support member 140 cast on the installation surface 200 is inserted into the through hole 113, filled with a slurry of the bonding cement composition, and the slurry of the bonding cement composition is hardened to form the bonded cement molded product 130. As a result, the lightweight panels 110 and the support member 140 are joined to each other.

For the lightweight panel 110, polystyrene foam (EPS (expandable polystyrene beads)) that can be easily molded by bead foaming can be used, and the thickness is 150 to 500 mm, the bulk specific gravity is 17 to 33 kg/m ³ , and the foaming ratio is One that is 30 to 60 times larger can be used. Since the lightweight panel 110 can be easily cut with a cutter knife or the like, the size of the lightweight panel 110 can be easily adjusted. Therefore, the size of the pool 1 as a water storage tank can be freely set. Note that the height of the lightweight panel 110 can be 300 to 2000 mm.

The notch recess 112 formed in the abutting surfaces 111 of the lightweight panel 110 facilitates the slurry of the bonding cement composition forming the bonding cement molded product 130 when the abutting surfaces 111 are butted together to form the through hole 113. The width WI in the thickness direction and the depth DE in the surface direction shown in FIG. 5 can be set to a size that can be filled, and can be set to 30 to 100 mm, respectively.

The support member 140 used between the panels can be an L-shaped angle made of iron with a side length of 30 to 100 mm. The support member 140 is arranged in an L-shape so that its longitudinal direction (length direction) is perpendicular to the installation surface 200 on which the lightweight panel 110 is installed, and as shown in FIGS. 2 and 5. The angle is cast and fixed on the installation surface 200 so that a virtual line connecting both ends of the cross section in the transverse direction (horizontal direction) is parallel to the connection direction of the lightweight panel 110.

A cement composition is a powdered material in which cement, aggregate, and other additives are uniformly mixed. When a cement composition is kneaded with water, it becomes a fluid slurry (paint) that can be coated or filled. When the cement in the slurry hardens through a hydration reaction, the slurry of the cement composition becomes a cement molded product (bonded cement molded product 130) as a hardened body.

The bonding cement composition may be a blend of a cementitious non-shrinkage grout material, cement, and aggregate. If only cement-based non-shrinkage grout material is used, the fluidity of the slurry is high and there is a risk that the slurry will leak from the gaps between the lightweight panels 110. Therefore, by blending cement and aggregate, the fluidity of the slurry is reduced. It is something that Further, the bonding cement composition maintains the non-shrinkage property of a cement-based non-shrinkage grout material, and there is almost no shrinkage when the slurry of the bonding cement composition is filled into the through holes 113 and hardened. Therefore, there is almost no gap caused by shrinkage between the bonded cement molded article 130 formed from the slurry of the bonded cement composition and the through hole 113, and the water stretched in the pool 1 is made of the lightweight panel 110. Intrusion into the waterproof structure wall 100 can be prevented. Any commercially available cement-based non-shrink grout can be used as the cement-based non-shrink grout.

As the cement, cements specified in JIS R 5210:2019 can be used, and as the aggregate, silica sand, cold water sand, crushed stone powder, Cerben (sanitary ware crushed product), shirasu balloon, etc. can be used. .

The blending ratio of the joint cement composition is 100 parts by mass of the cement-based non-shrinkage grout material, 20 to 100 parts by mass of cement, and 100 to 200 parts by mass of aggregate, and 100 mm of the slurry of the joint cement composition. Adjust the amount of water added so that the PVC flow test value (JASS 15 M-103) is 125 to 250 mm. This is because the slurry of the cement composition has excellent fluidity. If the 100 mm PVC flow test value is less than 125 mm, the fluidity of the slurry of the cement composition may be poor, and the ability to fill the through holes 113 may be poor. On the other hand, if the 100 mm PVC flow test value exceeds 250 mm, the fluidity of the slurry is high and there is a risk that the slurry will leak from the gaps between the lightweight panels 110. More preferably, the amount of water added is adjusted so that the slurry of the cement composition has a 100 mm PVC flow test value of 150 to 200 mm.

The test method for the 100 mm PVC flow test value (mm) (JASS 15 M-103 "Quality Standards for Self-Leveling Materials") is as follows. A vinyl chloride pipe (inner volume: 196 mL) with an inner diameter of 50 mm and a height of 100 mm was placed on a polished plate glass with a thickness of 5 mm, and after filling with the cement composition slurry, the pipe was pulled up until the spread of the slurry stopped. Then, measure the diameters in two perpendicular directions and use the average as the flow test value (mm).

Note that before being filled with the slurry of the bonding cement composition, each of the abutting surfaces 111, which is the abutting portion 114 between the lightweight panels 110 in which the through holes 113 are formed, and the lightweight panel 110 and the bottom surface on which the lightweight panel 110 stands up are Each of the connecting portions 115 of 201 is bonded with caulking material 120 in advance. This prevents the slurry of the cement composition from leaking and improves the waterproofness when used as the pool 1.

The caulking material 120 is a material that waterproofs and adheres the contact portions 114 between the lightweight panels 110 and the connection portions 115 between the lightweight panels 110 and the bottom surface 201, respectively. The composition of the caulking material 120 may be a moisture-curing silicone caulking material, a urethane caulking material, a dry-curing acrylic caulking material, a butyl rubber caulking material, or the like. Among these, moisture-curing caulking materials that shrink less during curing can be preferably used.

The caulking material 120 can be replenished from the inside of the pool 1 serving as a water tank by applying it to the contact portion 114 where the lightweight panels 110 come into contact with each other. As a result, the contact portion 114 of the lightweight panel 110 is filled with the caulking material 120 without any gaps, so that the waterproofness of the contact portion 114 can be improved. Note that ironing is a method in which a material (caulking material 120) is pressed onto the contact portion 114 by rubbing it with a plastering trowel, and the material is applied thinly and smoothly.

The side and bottom surfaces 201 of the lightweight panel 110, which is the inside of the pool 1 as a water storage tank, are coated with a resin that forms a waterproof coating layer 150 that provides waterproof properties. An overcoat material forming an overcoat protective layer 160 is applied to the surface.

The waterproof coating layer 150 is formed inside the pool 1 as a water storage tank, and is made of a resin having an elongation rate (ASTM D-412) of 100 to 1000%. can be used. By having an elongation rate of 100 to 1000%, the waterproof coating layer 150 can follow deformation caused by thermal expansion of the pool 1 as a water storage tank, vibrations caused by external factors, etc., and can ensure waterproofness. This is because it is possible. If the elongation rate of the waterproof coating layer 150 is less than 100%, it may not be able to follow the deformation of the pool 1, cracks may occur in the waterproof coating layer 150, and waterproofness may not be ensured. On the other hand, if the elongation rate of the waterproof coating layer 150 exceeds 1000%, although waterproofness can be ensured, the waterproof coating layer 150 becomes flexible and soft, and dirt easily adheres to it. , there is a possibility that users of pool 1 may feel uncomfortable. More preferably, the elongation rate of the waterproof coating layer 150 is 150 to 800%, and even more preferably 200 to 600%.

As the resin forming the waterproof coating layer 150, general-purpose resins such as urea resin, urethane resin, silicone resin, and acrylic resin can be used. Among these, urea resins and urethane resins, which can be instantly cured, are more preferable, and urea resins, which are difficult to hydrolyze, can be used more preferably. Urea resin (polyurea) is a resin produced by mixing an isocyanate component and an amine component at the tip of a spray gun. Urethane resin (polyurethane) is a resin produced by mixing an isocyanate component and a polyol component at the tip of a spray gun. Further, as the resin forming the waterproof coating layer 150, a mixture of urea resin and urethane resin can also be used. Note that the resin forming the waterproof coating layer 150 may be colored with a pigment or colored aggregate.

The coating amount of the waterproof coating layer 150 can be 0.5 to 5 kg/m ² (film thickness: approximately 0.5 to 5 mm). This is because sufficient waterproofing effect can be exhibited. If the coating amount of the waterproof coating layer 150 is less than 0.5 kg/m ² , the film thickness is thin and the waterproof coating layer 150 will crack or peel off when subjected to impact due to external factors, resulting in poor waterproof performance. may not be maintained. On the other hand, if the coating amount of the waterproof coating layer 150 exceeds 5 kg/m ² , the waterproof property is maintained, but the film becomes excessively thick and may become uneconomical. More preferably, the coating amount of the waterproof coating layer 150 is 1 to 4 kg/m ² (film thickness: approximately 1 to 4 mm), and even more preferably 2 to 3 kg/m ² (film thickness: approximately 2 to 3 mm). It is.

The protective top layer 160 is applied to prevent the waterproof coating layer 150 from deteriorating due to ultraviolet rays. Since the top coat material forming the top coat protective layer 160 is applied to the inside of the pool 1 as a water storage tank, a general-purpose paint with excellent water resistance can be used. As the resin composition of the top coat material forming the top coat protective layer 160, urethane resin, epoxy resin, fluororesin, silicone resin, acrylic resin, etc. can be used. Among these, urethane resins, epoxy resins, fluororesins, and silicone resins, which have excellent water resistance, can be preferably used, and from the viewpoint of versatility, urethane resins and epoxy resins can be more preferably used.

The topcoat material forming the topcoat protective layer 160 can be either enamel paint or clear paint, but if the waterproof coating layer 150 is colored with pigment or colored aggregate, waterproof A clear paint that can give depth to the coating layer 150 can be preferably used.

Hereinafter, a method of constructing the pool 1 using the waterproof structural wall 100 of the embodiment will be described.

Before constructing the pool 1, as shown in Fig. 1, a replenishment port 301 for replenishing water, a suction port 302 for sucking water to purify the water, and a suction port 302 for injecting clean water into the pool are arranged according to the locations in the pool 1. A discharge port 309 that returns to 1 is arranged. A circulation piping 303 is formed from the suction port 302 to the discharge port 309, and the water sucked from the suction port 302 passes through the circulation piping 303 to a hair collector 304, a pump 305, a filter 306, a boiler 307, and a sterilizer 308. The water is circulated in this order, cleaned, and returned to the pool 1 through the discharge port 309. When water is replaced, it is pumped out of pump 305.

The construction method of the pool 1 according to the embodiment includes an erection step in which the support member 140 is erected while the bottom surface 201 is placed on the installation surface 200, and an installation step in which the lightweight panel 110 is installed along the installed support member 140. a filling step of filling the through holes 113 between the lightweight panels 110 with a slurry of the bonding cement composition; and a coating step of applying a resin forming the waterproof coating layer 150 to the side surfaces of the lightweight panels 110 and the bottom surface 201 of the pool 1. and an overcoat step of applying a topcoat material to form the topcoat protective layer 160 onto the surface of the waterproof coating layer 150.

A polystyrene foam (EPS) with a foaming ratio of 50 times, a bulk specific gravity of 20 kg/m ³ , a thickness of 200 mm, and a height of 500 mm was used for the lightweight panel 110 that forms the frame of the waterproof structural wall 100 of the pool 1. . The notch recess 112 provided in the lightweight panel 110 was provided at the center of the abutment surface 111 in the thickness direction, and had a width WI in the thickness direction of 50 mm and a depth DE in the surface direction of 60 mm.

In the erection process, embedding holes 202 (FIG. 1) for burying the lower side of the support member 140 are provided in the installation surface 200 along the outer circumference of the pool 1 in accordance with the locations where the lightweight panels 110 are to be connected and installed. , the support member 140 was erected from the buried hole 202. The support member 140 disposed between the lightweight panels 110 was an L-shaped angle with a side length of 50 mm. The support member 140 is arranged so that the imaginary line connecting both ends of the cross section of the L-shaped angle in the transverse direction (horizontal direction) is parallel to the connecting direction of the lightweight panel 110 to be installed. Each was installed so that its longitudinal direction was perpendicular to the other. Thereafter, concrete slurry was placed in the area that will become the installation surface 200 of the pool 1. As the concrete slurry hardens, a bottom surface 201 of the pool 1 is formed on the installation surface 200.

In the process of installing the lightweight panel 110, as shown in FIG. 2, the lightweight panel 110, which will become the outer peripheral wall of the pool 1, is arranged in accordance with the installed support member 140. The arranged lightweight panel 110 has notched recesses 112 along the vertical direction of the abutting surface 111, so when the lightweight panel 110 is installed, the light from the respective notched recesses 112 of the abutting surface 111 of the lightweight panel 110 A through hole 113 is formed. Since the two lightweight panels 110 are installed with the support member 140 in between, the support member 140 is inserted into the through hole 113 formed from the cutout recess 112 .

As shown in FIG. 5, a silicone-based caulking material 120 was applied to the abutting surfaces 111, which are the abutting parts 114 between the lightweight panels 110 and the joints of the through holes 113, to bond the lightweight panels 110 together. Further, caulking material 120 was also applied to the connecting portion 115 between the lightweight panel 110 and the bottom surface 201, and the lightweight panel 110 and the bottom surface 201 were bonded together. As a result, the contact parts 114 between the lightweight panels 110 and the connection parts 115 between the lightweight panels 110 and the bottom surface 201 are filled with the caulking material 120, and all the joints between the side surfaces surrounding the pool 1 and the bottom surface are caulked. covered with material 120. The abutment surface 111 between the lightweight panels 110, which forms the joint between the through holes 113, is replenished with caulking material 120 from the inside of the pool 1 serving as a water storage tank by ironing, thereby increasing the waterproofness of the contact portion 114.

After the caulking material 120 has hardened, as shown in FIG. A plate-shaped support material 121 that prevents the upper end side of the through hole 113 from opening was brought into contact with both widths of the upper end portion straddling the width, and fixed with a clamp (not shown).

In the filling step, the through holes 113 were filled with a slurry of the cement composition. The amount of water added to the slurry of the cement composition was adjusted so that the 100 mm PVC flow test value was 125 to 250 mm. Since the slurry of the cement composition having a 100 mm PVC flow test value of 125 to 250 mm has appropriate fluidity, it can be easily filled into the through holes 113. For this reason, the pool 1 as a water storage tank of the embodiment can be made to have excellent workability during construction. In addition, in the embodiment, a slurry of a cement composition having the following composition was used.

Grout material 100 parts by mass Ordinary Portland cement (JIS R 5210:2019) 50 parts by mass Silica sand No. 6 (average particle size (d50): approx. 0.37 mm) 150 parts by mass Kneading water 39.1 parts by mass Eurox Super (cement-based non-shrink grout made by Taiheiyo Materials Co., Ltd.) was used.

The 100 mm PVC flow test value (JASS 15 M-103) of the slurry of the joint cement composition was 172 mm. By pouring the slurry of the bonding cement composition into the through hole 113 and hardening the bonding cement composition slurry, a bonded cement molded article 130 is formed in the through hole 113, and the waterproof structural wall 100 consisting of a plurality of lightweight panels 110 is formed. is formed along the periphery of the pool 1.

After the filling process, it is confirmed that the slurry of the bonding cement composition has hardened and the bonded cement molded article 130 has been molded, and auxiliary materials such as the shoring material 121 are removed.

In the coating process, a resin forming the waterproof coating layer 150 is coated on the side surfaces and bottom surface 201 of the lightweight panel 110 that will be the inside of the pool 1 as a water storage tank. In the embodiment, the waterproof coating layer 150 is formed by mixing an isocyanate component and an amine component at the tip of a spray gun to form a urea resin, which is colored blue with a pigment. The waterproof coating layer 150 made of urea resin of the embodiment had an elongation rate (ASTM D-412) of 300%, and a coating amount of 2.0 kg/m ² (film thickness: about 2.0 mm).

A top coat material forming a top coat protective layer 160 is applied to the surface of the waterproof coating layer 150 formed from resin. In the embodiment, a general-purpose urethane resin clear paint was used, and the coating amount was 0.8 kg/m ² (film thickness: approximately 0.8 mm).

According to the waterproof structure wall 100 according to the embodiment of the present specification, the through holes 113 are filled with slurry of a bonding cement composition for forming the bonded cement molded product 130, thereby allowing the lightweight panels 110 and the support member 140 to can be joined to form the waterproof structural wall 100 of the water tank. Furthermore, a resin forming a waterproof coating layer 150 is applied to the side surface of the lightweight panel 110 that is the inside of the waterproof structural wall 100 of the water tank, thereby imparting waterproofness to the inside of the waterproof structural wall 100 of the water tank. be able to. Therefore, in the waterproof structural wall 100 according to the embodiment, the waterproof structural wall 100 of the water tank can be formed by filling the through holes 113 with the slurry of the cement composition. By coating the inside with resin, waterproof properties can be imparted, making construction easy.

In addition, the waterproof structure wall 100 of the pool 1 as a water storage tank of the embodiment can be implemented even if its configuration is changed to the following form.

The waterproof structural wall 100 of the embodiment was used as a water storage tank for a pool 1 used for swimming and bathing. The waterproof structure wall 100 can also be used for a bathtub used for bathing, a pond used for raising fish and the like for ornamental purposes, an aquarium for storing water, etc. if necessary.

In the waterproof structural wall 100 of the embodiment, the lightweight panel 110 uses polystyrene foam (EPS) that is easy to mold by bead foaming, but the lightweight panel 110 can be any lightweight panel. . Polymer foams and inorganic foams can be used as materials for lightweight panels. As the polymer foam, polystyrene foam, polyurethane foam, polyphenol foam, polyolefin foam (polyethylene foam, polypropylene foam), etc. can be used. As the inorganic foam, aluminum hydroxide foam (Talbocell), cement foam (ALC (autoclaved lightweight aerated concrete)), etc. can also be used.

In the waterproof structure wall 100 of the embodiment, the lightweight panel 110 used is an EPS with a foaming ratio of 50 times, but if the foaming ratio is 30 to 60 times, it can be used as the EPS of the lightweight panel 110. Can be done. When EPS has a foaming ratio of less than 30 times, a large amount of resin (beads) is required, which may be uneconomical. On the other hand, when EPS has a foaming ratio of more than 60 times, the strength is low and there is a risk of plastic deformation when subjected to impact. More preferably, the expansion ratio of the EPS is 40 to 55 times.

The cutout recess 112 provided in the lightweight panel 110 of the embodiment has a rectangular cross section, a width WI in the thickness direction of 50 mm, and a depth DE in the surface direction of 60 mm. The length can be 30 to 100 mm. This is because if the width WI and the depth DE are 30 to 100 mm, the through hole 113 formed by the notched recess 112 can be easily filled with the slurry of the bonding cement composition forming the bonded cement molded product 130. If the width WI and the depth DE are each less than 30 mm, the through hole 113 may be narrow and the filling performance of the slurry of the cement composition may be poor. On the other hand, when the width WI and the depth DE each exceed 100 mm, although the filling property of the slurry of the bonding cement composition is excellent, the amount of the bonding cement composition used increases, which may be uneconomical. More preferably, the width WI and the depth DE are each from 40 to 90 mm, and even more preferably from 50 to 80 mm. Note that the cross section of the cutout recess 112 is not limited to a rectangular shape, but may be semicircular, for example, as long as it can be easily filled with the slurry of the cement composition.

Although an L-shaped angle with a side length of 50 mm is used for the support member 140 in the embodiment, an L-shaped angle with a side length of 40 to 50 mm can be used. Further, the support member 140 is not limited to this, and may be a flat bar, and any material that reinforces the bonded cement molded product 130, such as reinforcing bars, deformed reinforcing bars, and steel frames, can be used. .

In the lightweight panels 110 of the waterproof structure wall 100 of the pool 1 of the embodiment, the lightweight panels 110 to be joined are joined together and the spaces between the lightweight panels 110 are closed using caulking material 120, but there is a gap between the lightweight panels 110 to be joined. If there is a gap between the lightweight panels 110, the space between the lightweight panels 110 can be closed by processing a panel made of the same material as the lightweight panels 110 into a size that fills the gap.

In the waterproof structure wall 100 of the pool 1 according to the embodiment, the bottom surface 201 was cast on the installation surface 200 while the support member 140 was installed in the buried hole 202 of the installation surface 200. 140 can also be installed. In this case, a hole in which the support member 140 is to be buried is provided using a vibration drill or the like at a location where the lightweight panel 110 of the waterproof structure wall 100 on the bottom surface 201 is to be installed, and the support member 140 is erected in the hole. A slurry of the same cement composition that forms the bonded cement molding 130 can be used to secure the support member 140.

In the waterproof structure wall 100 of the pool 1 according to the embodiment, a replenishment step is provided before the coating step in which caulking material 120 is refilled from the inside of the pool 1 by ironing the contact portion 114 where the lightweight panels 110 contact each other. However, the replenishment step by ironing can be omitted on the condition that the waterproofness of the contact portion 114 is ensured.

In the waterproof structure wall 100 of the pool 1 according to the embodiment, the waterproof coating layer 150 is formed on the side surface of the lightweight panel 110 that is the inside of the pool 1 and the bottom surface 201 of the pool 1. The waterproof coating layer 150 can also be formed on both side surfaces and the top surface.

In the waterproof structure wall 100 of the pool 1 according to the embodiment, the thickness of the lightweight panel 110 is the same on the upper and lower sides, 200 mm, but as shown in FIG. The lower side can be made thicker. According to this, the thickness of the lightweight panel 110 can be increased according to the water depth, and water pressure can be efficiently received. As a second embodiment, in the pool 2 shown in FIG. 6, the lightweight panel 110 has a height of 1200 mm, an upper thickness of 200 mm, and a lower thickness of 300 mm.

Other technical ideas understood from the waterproof structure wall 100 of the pool 1 according to the embodiment will be described below.

In the waterproof structure wall 100 of the pool 1 according to the embodiment, the slurry of the bonded cement composition forming the bonded cement molding may have a 100 mm PVC flow test value (JASS 15 M-103) of 125 to 250 mm. can.

According to this, the 100 mm PVC flow test value of the slurry of the bonding cement composition to be filled into the through hole is 125 to 250 mm, so the slurry of the bonding cement composition has appropriate fluidity and flows into the through hole. can be easily filled. Therefore, the workability during construction can be improved.

Furthermore, in the waterproof structure wall 100 of the pool 1 according to the embodiment, the bonding cement composition includes 100 parts by mass of cement-based non-shrinkage mortar and 20 to 100 parts by mass of cements (JIS R 5210:2019). The composition may contain 100 to 200 parts by mass of aggregate.

According to this, since the slurry of the cement composition has appropriate fluidity, it can be easily filled into the through holes. Therefore, the workability during construction can be improved.

Furthermore, in the waterproof structure wall 100 of the pool 1 according to the embodiment, the thickness of the lightweight panel 110 can be made thicker on the lower side than on the upper side.

According to this, the thickness of the lightweight panel 110 can be increased according to the water depth, and water pressure can be efficiently received.

1 Pool 2 Pool 100 Waterproof structural wall 110 Lightweight panel 111 Abutting surface 112 Notch recess 113 Through hole 114 Abutting part 115 Connection part 120 Caulking material 121 Supporting material 130 Bonded cement molding 140 Supporting member 150 Waterproof coating layer 160 Top coat protective layer 200 Installation surface 201 Bottom surface 202 Burial hole 301 Supply port 302 Suction port 303 Circulation piping 304 Hair collector 305 Pump 306 Filter 307 Boiler 308 Sterilizer 309 Discharge port DE Depth WI Width

Claims (7)

A waterproof structural wall surrounding a water tank,
The framework is a lightweight panel erected along the circumference of the water tank,
The lightweight panel and the lightweight panel disposed adjacent to the water tank in the circumferential direction are joined,
A notch recess along the vertical direction is provided on the abutting surface where the two lightweight panels are joined, respectively,
By abutting the abutting surfaces of the two lightweight panels, a through hole is formed from the opposing notch recesses,
A support member that supports the lightweight panel is erected from the installation surface in the through hole, and a bonding cement molding that joins the lightweight panels and the support member is filled,
A waterproof structural wall, characterized in that a waterproof coating layer is provided on a side surface of the lightweight panel that forms the inside of the water tank. 2. The waterproof structure wall according to claim 1, wherein a caulking material is filled in an abutment area between parts other than the notch recess of the abutting surface where the two lightweight panels are joined. A water storage tank provided with the waterproof structural wall according to claim 2,
The caulking material is filled in a connecting portion where the bottom surface formed on the installation surface of the water storage tank and the lightweight panel are connected,
A water storage tank characterized in that the waterproof coating layer is integrally formed on the side surface and the bottom surface of the lightweight panel that is the inner side of the water storage tank. The water storage tank according to claim 3, wherein the elongation rate (ASTM D-412) of the waterproof coating layer is 100% or more. 4. The water storage tank according to claim 3, wherein a protective top layer is provided on the surface of the waterproof coating layer. A method for constructing a water tank according to claim 3, comprising:
an erecting step of erecting the support member on the installation surface along the periphery of the water tank;
The lightweight panels are each installed along between the plurality of upright supporting members, and the supporting members are inserted into the through holes formed between the installed lightweight panels, so that the lightweight panels are joined to each other. an installation step of adhering the contact portion with the caulking material, adhering the connection portion where the lightweight panel and the bottom surface are connected with the caulking material, and installing the lightweight panel;
a filling step of filling the through hole with a slurry of a bonding cement composition forming the bonded cement molded article;
a coating step performed after the filling step, in which a resin forming the waterproof coating layer is applied to the side surface of the lightweight panel that is the inside of the water tank and the bottom surface of the water tank;
A method for constructing a water storage tank, characterized by having the following. 7. The water storage tank according to claim 6, further comprising a replenishing step of replenishing the abutment portion where the lightweight panels join together from the inside of the water tank by applying caulking material after the installation step. construction method.

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