JPH0115666Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a waterproof structure that reliably prevents stored water from seeping out of the tank, has excellent durability, and can be easily constructed at the construction site. This article concerns an excellent prefabricated concrete water tank.

(Prior art) In concrete water tanks used as fire prevention water tanks or agricultural water tanks, waterproofing is used to reliably prevent stored water from seeping out of the tank and to improve the durability of the water tank. Processing is performed. Conventionally, such waterproofing treatment has been carried out using (1) so-called watertight concrete as the concrete for constructing the water tank;
Alternatively, this was done by using watertight concrete with improved waterproofing properties by mixing a waterproofing agent (2), or by applying waterproof mortar to the inner surface of the water tank. (3) Another possible method of waterproofing is to form the water tank body once and then waterproof the inner surface thereof by forming a resin film.

(Problem to be solved by the invention) However, in the case of (1), even if watertight concrete containing a waterproofing agent is used and the walls of the water tank are made thick, the water tank still remains Since the tank was made of concrete, it was impossible to completely prevent stored water from seeping out of the tank.

In addition, in the case of (2), even if a lath is placed under the coating of waterproof mortar, vibrations such as during an earthquake or shrinkage of the waterproof mortar may cause damage between the waterproof mortar and the concrete. Because the compatibility with the surface was not so good, the waterproofing mortar cracked and gradually peeled off, so waterproofing was not perfect.

Furthermore, if it is assumed that the embodiment (3) is adopted, depending on the size of the water tank, the area for forming the resin film will be extremely large, and the work of forming the resin film will take a long time. In addition to the problem of extremely low work efficiency, the long working hours tend to cause the inside of the tank to become deficient in oxygen, and in order to form a resin film, organic Considering the fact that solvents are often used, it is thought that the vapor of the organic solvent will fill the tank and easily cause symptoms of organic solvent poisoning, causing serious problems in terms of occupational safety and health.

The object of the present invention is to provide a prefabricated concrete water tank that can solve these problems, is easy to construct, and has excellent waterproof properties.

(Means for Solving the Problems) The prefabricated concrete water tank (hereinafter referred to as water tank) 1 with excellent waterproof properties according to the present invention is a concrete box-type underdrain member that is interconnected to ensure watertightness. It comprises a plurality of intermediate bodies 2 having a shape and concrete end members 3, 3 disposed on both sides of the joined intermediate body parts, each intermediate body 2...and the inner surface side of each end face member 3, 3. A resin film 6 having excellent waterproofness and compatibility with concrete is formed on S, leaving a narrow end cavity 15 at the joint edge portion, and forming a resin film 6 on the inner surface of the joint 17 between each component. end space 15,1
5 as a whole is characterized by a joint resin film 6a forming part which is excellent in waterproofness and compatibility with concrete.

(Function) Due to the excellent waterproof property of the resin film 6, the inner surface of the water storage tank 1 is completely waterproof, and therefore, it is possible to reliably prevent stored water from seeping out of the tank. Further, since the resin film 6 has excellent affinity with concrete, there is no fear of peeling off, and therefore, the water tank 1 can be completely waterproofed semi-permanently.

(Example) Examples of the present invention will be described below based on the drawings.

In the figure, the water tank 1 of the present invention is constructed by joining together a plurality of concrete intermediate members 2, arranging concrete end face members 3, 3 on both sides, and integrating the whole in a watertight manner to construct a water tank main body 5. After that,
A resin film 6 is formed over the entire surface of the inner surface S.

In this embodiment, the intermediate body 2 is configured as a box-shaped underdrain member having a rectangular cross section with through holes 7 for connection at the four corners, and at least one of the intermediate bodies 2 (intermediate body 2a) is The top plate 9 has a suction tube input hole 10, and the bottom plate 11 directly below it has a water collection hole 12. Further, the end members 3, 3 have the same cross-sectional shape as the intermediate body 2 and are closed on one side.
It is configured as a hollow box-like member, and has through holes 13 at its four corners that communicate with the through hole 7.

Each of these parts is manufactured in an integrated manner at a factory, and at the manufacturing stage, as shown in the figure,
The resin film 6 is formed on the inner surface side, leaving a narrow end cavity 15 at the joining edge portion. The resin film 6
As the resin for forming the resin, a resin having excellent waterproof properties and an excellent affinity with concrete, such as an epoxy resin, can be suitably used. The resin film 6 is formed by applying the coating using a brush, a roller, or the like.

The intermediate body 2 having the above configuration and the end members 3, 3 are joined as required, and the tension steel material 16 is inserted into the through holes 7, 13 of each member, and the tension steel material 16 is tensioned. By integrating each member in a watertight manner, a desired water tank main body 5 can be constructed.

The end space 15 on the inner surface side of the joint 17 between each component of the water tank main body 5 assembled in this way,
15, a resin film 6a is formed by, for example, applying or spraying an epoxy resin.
A uniform resin film 6 is formed over the entire surface, and therefore,
The water tank 1 will be completely waterproofed. Note that the resin forming the resin film 6 is not limited to the above-mentioned epoxy resin as long as it has excellent waterproofness and compatibility with concrete, but may also include urethane resin, silicone resin, acrylic resin,
Various resins such as synthetic rubber and natural resins can be used, and the resin film can be formed not only by spraying or painting the liquid as described above, but also by pasting a sheet material such as vinyl chloride. .

(Effects of the invention) As a result of forming a resin film over the entire inner surface of the water tank with excellent waterproofness and compatibility with concrete, the inner surface of the water tank is completely sealed due to the excellent waterproofness of the resin film. Therefore, it is possible to reliably prevent stored water from seeping out of the tank. Furthermore, since the resin film has excellent affinity with concrete, there is no fear of peeling off, and therefore the water tank can be completely waterproofed semi-permanently.

The water tank of the present invention is constructed as an assembly type in which the intermediate member and the end member are joined as required and the whole is integrated in a watertight manner, and the inner surface of each intermediate member and each end member is At the manufacturing stage, etc., before assembly, a resin film is formed leaving a narrow end gap at the joint edge, so at the construction site, the inner edge of the joint of each component Only by forming the resin film in the empty space, a water storage tank in which the resin film is formed over the entire inner surface side can be obtained. In this way, the labor required for waterproofing at the construction site is greatly reduced, and a water tank of any capacity can be efficiently constructed by joining the required number of intermediate members and end members. Therefore, according to the present invention, a desired water tank can be constructed in a short period of time.

The water tank of the present invention is constructed as an assembly type, and most of the resin film that should be formed on the inner surface of the water tank is formed at a stage before assembly, such as during the manufacturing stage of each component in a factory. Therefore, a uniform resin film with excellent stability can be easily formed.

Further, in the water storage tank of the present invention, since the area on which the resin film should be formed at the construction site is very small, the resin film can be efficiently formed in a short time. Therefore, there is no risk of the tank becoming deficient in oxygen during work due to long working hours, and even if organic solvents are used to form a resin film, the vapor will not enter the tank. There is no risk of organic solvent poisoning symptoms caused by overfilling, which is very preferable from the standpoint of occupational safety and health.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Water tank, 2...Intermediate body, 3...End face member, 5...Water tank body, 6...Resin film, 6a...
Junction resin film, 15...end cavity, 17...junction.

Claims (1)

[Scope of utility model registration request] A plurality of intermediate members 2 in the form of concrete box-type underdrain members are joined to each other while ensuring watertightness, and concrete end members 3 are arranged on both sides of the joined intermediate members, On the inner surface S of each intermediate body 2... and each end member 3, 3, a narrow end cavity 15 is left at the joint edge portion, and a resin film 6 with excellent waterproofness and compatibility with concrete is provided. is formed, and the entire end cavity 15, 15 on the inner surface side of the joint 17 between each component is a joint resin film 6a forming part that is excellent in waterproofness and compatibility with concrete. A prefabricated concrete water tank with excellent waterproof properties.