JPH0318505Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a corrosion protection device for an aluminum bottom wall of a structure such as a swimming pool.

Conventional technology In the past, for example, in aluminum swimming pools, the aluminum bottom wall was particularly prone to corrosion, and this corrosion was accelerated by the moisture in the sand spread under the bottom wall and the oxygen ions contained therein. This is for the purpose of Additionally, the aluminum bottom wall was normally in contact with the anchor bolts, further accelerating corrosion due to galvanic corrosion.

Problems to be Solved by the Invention In the above-mentioned conventional structures such as aluminum swimming pools, there was a problem in that water leakage occurred due to corrosion of the aluminum bottom wall.

The purpose of this invention is to solve the above conventional problems,
To reliably prevent corrosion of an aluminum bottom wall of a structure such as a swimming pool, to reliably prevent water leakage from the structure such as a swimming pool, and to perform corrosion prevention construction extremely easily and inexpensively. The aim is to provide a corrosion protection device for the aluminum bottom walls of structures.

Means for solving the problem In order to achieve the above purpose, this invention
A net-like anti-corrosion material made of the metal itself, which has a lower electrode potential than aluminum, is laid at required locations on the underside of the aluminum bottom wall of the structure, and the bottom surface of the bottom wall and the mesh-like anti-corrosion material come into contact with each other. This article focuses on anti-corrosion equipment for the aluminum bottom walls of structures.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In Figures 1 and 2, the bottom wall of the pool 1
It consists of a number of aluminum plates welded to adjacent ones. Sand 2 is spread under the aluminum bottom wall 1.
A chestnut stone 4 is laid on the underside.

At least below the peripheral edge of the aluminum bottom wall 1, a net-like anti-corrosion member 3 made of metal itself, which has a lower electrode potential than aluminum, is laid between the bottom wall 1 and the sand 2. The anticorrosion member 3 and the lower surface of the bottom wall 1 are brought into contact with each other. Incidentally, in order to ensure the contact between the bottom wall 1 and the mesh-like anti-corrosion member 3, it is preferable to join them partially by spot welding or the like.

Here, the mesh-like anti-corrosion member 3 is used to sacrificially prevent the aluminum bottom wall 1 from corroding. Aluminum alloys) or metals themselves, such as zinc, which have a lower electrode potential than aluminum. Such a net-like anti-corrosion member 3
may be laid under the entire surface of the aluminum bottom wall 1 of the swimming pool, or may be laid only under areas that are susceptible to corrosion, such as the periphery of the bottom wall 1, for example.

Further, as shown in FIG. 2, the mesh-like anticorrosion member 3 is specifically made of an expanded material made of the above-mentioned metal. This expanded material is made by making a large number of cuts 6 in the metal plate, leaving joints 5 so that the overall arrangement is in a bird-like shape when viewed from above, and pulling the metal plate from both sides to enlarge the cuts 6. It is made by forming a large number of substantially diamond-shaped openings 7 in a stretched state.

FIG. 3 shows a modified example of the mesh-like anti-corrosion member 3, in which the linear portion 8 of the mesh-like anti-corrosion member 3 shown in FIG. 2 is shown.
A protrusion 9 is formed by cutting off a portion of the cut piece and standing up the cut piece, and the tip of the protrusion 9 is brought into contact with the lower surface of the aluminum bottom wall 1, thereby creating a net-like shape. The anticorrosive member 3 and the bottom wall 1 can be brought into reliable contact with each other.

In addition, as for the mesh-like anti-corrosion member 3, although not shown in the drawings, slits are drilled in a bird-like arrangement when viewed from a plane in a web of a metal extruded material consisting of parallel flanges and a web connecting adjacent flanges. An expanded material made by stretching and expanding this extruded material from side to side may be used, or a material made by knitting the above-mentioned cotton material made of metal into a wire mesh shape may be used.

These mesh-like anticorrosion members 3 corrode preferentially than the aluminum bottom wall 1 in a corrosive environment, and can effectively protect the bottom wall 1 from corrosion.

Additionally, in FIG. 1, reference numeral 10 denotes a side wall of the pool, which is constructed by sequentially welding a large number of aluminum plates, and the pool body is further welded to the side wall 10 and the bottom wall 1. A metal corner plate 11 is placed around the outer periphery of the lower edge of the pool body, and is fixed to a concrete foundation 13 with anchor bolts 12. Under the foundation 13, concrete 14 and chestnut stone 15 are laid. Reference numeral 16 indicates a drainage gutter provided outside the upper edge of the side wall 10, and reference numeral 17 indicates a side wall reinforcing member horizontally arranged outside the center of the height of the side wall 10.

Note that this invention is applicable not only to the above-mentioned pool but also to the aluminum bottom walls of structures in general.

Effects of the invention As described above, the corrosion protection device for the aluminum bottom wall of a structure according to this invention is attached to the metal itself, which has a lower electrode potential than aluminum, at required locations on the lower side of the aluminum bottom wall 1 of the structure. A mesh-like anti-corrosion member 3 is laid down, and the lower surface of the bottom wall 1 and the mesh-like anti-corrosion member 3 are brought into contact with each other. Corroded preferentially, bottom wall 1
corrosion can be sacrificially prevented.
Moreover, since the anti-corrosion member 3 is made of a metal itself with a lower electrode potential than aluminum, it is possible to effectively prevent corrosion of a wide area of the aluminum bottom wall 1 with a small amount of material, and it is possible to prevent corrosion of a wide area of the aluminum bottom wall 1 with a small amount of material. Water leakage can be reliably prevented. Moreover, the mesh-like anti-corrosion member 3 can be manufactured very easily and inexpensively from the metal itself, which has a lower electrode potential than aluminum, and the mesh-like anti-corrosion member 3 is attached to the underside of the aluminum bottom wall 1. Aluminum bottom walls of structures such as pools 1.
This has the effect that anti-corrosion construction can be carried out extremely easily and at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention: Fig. 1 is a partial vertical sectional view of the pool, Fig. 2 is an enlarged partial cutaway plan view of the bottom wall of the pool, and Fig. 3 is a modification of the mesh anticorrosive member. FIG. 1... Aluminum bottom wall, 2... Sand, 3...
A mesh-like anti-corrosion member made of metal itself with a low electrode potential.

Claims (1)

[Scope of utility model registration request] A mesh anti-corrosion member 3 made of metal itself, which has an electrode potential lower than that of aluminum, is laid at required locations on the lower side of the aluminum bottom wall 1 of the structure, and the mesh anti-corrosion member 3 is placed between the lower surface of the bottom wall 1 and the mesh anti-corrosion member 3. Corrosion protection device for the aluminum bottom wall of a structure, where the and are brought into contact with each other.