JPH11343753A - Execution method of corrosionproof concrete tank, and corrosionproof concrete tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the execution method of a corrosionproof concrete tank, in which the execution of works and construction management are simplified, the leakage of a content liquid can be sensed surely and tank structure itself has heat-insulating properties, and the corrosionproof concrete tank. SOLUTION: A corrosion-resistant corrosionproof resin layer is laminated on the internal surface of a concrete building frame 1 in the corrosionproof concrete tank. The execution method of the crossionproof concrete tank has a process in which the internal surface of the concrete building frame 1 is coated with a corrosion-resistant primer liquid having thickness, a process in which a hollow glass fabric 2, in which a section between two sheet-shaped glass fiber fabrics (2a, 2b) is connected by a large number of glass fiber bundles (2c), is laminated on the surface of the primer liquid and sections among the fibers of the hollow glass fabric 2 are impregnated with a part of the primer liquid, a process in which the surface of the hollow glass fabric 2 is coated with a corrosionproof liquid having the same components as the primer liquid before the complete solidification of the primer liquid, the fibers of the hollow glass fabric 2 are impregnated sufficiently with the corrosionproof liquid and the glass fiber bundles (2c) are erected, and a process in which the solidification of the primer liquid and the corrosionproof liquid is waited by the lapse of the time after the process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anticorrosion structure for a concrete tank, and more particularly, to a method for constructing an anticorrosion concrete tank and an anticorrosion concrete tank.

[0002]

2. Description of the Related Art As is well known, in a chemical storage tank or a waste liquid tank having a concrete structure, the concrete surface is covered with a corrosion-resistant FRP lining in order to prevent corrosion due to a liquid content. The concrete structural cracks are inevitable. In other words, if a concrete structural crack occurs, the FRP lining may be cracked or damaged, but if left unchecked without such a situation, the liquid permeates into the basement and In some cases, soil contamination accidents may occur.

[0003] In order to prevent such an accident of soil contamination due to leakage of the liquid content, a corrosion-resistant concrete tank as shown in FIGS. 6 and 7 has been conventionally proposed. That is, reference numeral "A" in FIG. 6 denotes a concrete skeleton, and the inner surface of the concrete skeleton A is covered with a number of corrosion-resistant sheets B of FRP having corrosion resistance to the content liquid. That is, the adhesive layer C
The anticorrosion sheets B adhered to the inner surface of the concrete skeleton A through the gaps are slightly separated from each other to form leak grooves D into which the outflow contents liquid can flow, and the surfaces of the leak grooves D correspond to each other. The surface of the anticorrosion sheet B is closed with FRP tape E resin-welded.

A gutter-shaped member F having a "C" -shaped cross section is fixed to the ridge line on the inner surface of the concrete frame A with an adhesive or the like, and the inside of the gutter-shaped member F and the hollow glass fabric of the concrete frame A are fixed. The leak groove D on the inner surface is connected to each other. Therefore, in the corrosion-resistant concrete tank having such a structure, when the corrosion-resistant sheet B is cracked or broken due to a concrete structural crack or the like, a part of the outflowing liquid flows into the nearby leak groove D, forming a gutter-like shape. Since it accumulates in the bottom gutter-shaped member F through the member F, if a leak detector G for detecting leaked liquid is located in the bottom gutter-shaped member F, a soil contamination accident due to leakage of the content liquid can be prevented. Can be prevented.

[0005]

However, due to the arrangement of the dense leak grooves D, the number of the anticorrosion sheets B and the FRP tape E increases, and the adhesion of the anticorrosion sheets B to the inner surface of the concrete frame A and the FRP tape Since the time and labor for resin welding of E significantly increase, and if the entire FRP tape E is not completely liquid-tight, a part of the content liquid flows into the leak groove D. The management of the adhesion state of E was troublesome. In the case of the leak groove D having a small cross-sectional area, if the anticorrosion sheet B or the FRP tape E is severely damaged, a part of the outflowing liquid does not effectively flow into the thin leak groove D having a large fluid resistance. In some cases, the state could not be detected reliably. Further, in a chemical storage tank or the like having a concrete structure, the tank itself may be required to have a heat retaining function, that is, a heat insulating ability. However, it is difficult to add such a function to the above-described structure.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional corrosion-resistant concrete tank, the present invention is simple in construction and construction management, can reliably detect leakage of the liquid content, and has a heat insulating property in the tank structure itself. Another object of the present invention is to provide a method for constructing a corrosion-resistant concrete tank and a corrosion-resistant concrete tank.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a corrosion-resistant concrete tank in which a corrosion-resistant corrosion-resistant resin layer is laminated on the inner surface of a concrete body. A step of applying a certain primer solution, and laminating a hollow glass fabric in which two sheet-like glass fiber fabrics are connected by a large number of glass fiber bundles on the surface of the primer solution to form a part of the primer solution into the hollow glass fabric And impregnating the fibers of the hollow glass fabric with an anticorrosion solution having the same components as the primer solution before the primer solution is completely solidified. A method for constructing a corrosion-resistant concrete tank comprising: a step of erecting a glass fiber bundle to stand up; and a step of waiting for solidification of the primer liquid and the anticorrosion liquid after a lapse of time after this step. It is intended to propose a.

[0008] In the following description of the preferred embodiment of the present invention, 1) a method for constructing a corrosion-resistant concrete tank in which the primer liquid and the corrosion-resistant liquid are vinyl ester resins, and 2) a corrosion-resistant concrete obtained by the above-described method. A tank, 3) a corrosion-resistant concrete tank provided with a leak detector located in the internal space of the hollow glass fabric covering the bottom surface of the concrete body and detecting outflow of the content liquid into the internal space, 4) the leak detection The vessel is a corrosion-resistant concrete tank located inside a detection pipe having a lower end fixed to the hollow glass fabric covering the inside of the concrete body with the pipe connected to the internal space.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. 1 and 2 show a corrosion-resistant concrete tank obtained according to the present invention. The entire inner surface of a concrete frame 1 of the corrosion-resistant concrete tank is covered with a plurality of hollow glass fabrics 2 to be treated in a manner described in detail below. is there. That is, this hollow glass fabric 2 is, as shown in FIG. 3, "two sheet-like glass fiber fabrics 2a, 2b.
The fabric is a fabric in which the spaces are connected by a large number of glass fiber bundles 2c ", and the flexible hollow glass fabric 2 is commercially available, for example, under the trade name" PARA BEAM "sold by Chori Corporation.

Reference numeral 3 in FIGS. 1 and 2 denotes a corrosion-resistant primer solution composed of, for example, a vinyl ester resin. The primer solution 3 is applied to the hollow glass fabric 2 on the inner surface of the concrete frame 1. Is applied to the inner surface before sticking, and a part thereof is impregnated between the fibers of the hollow glass fabric 2. In addition, since the FRP tape 4 is adhered to the surface of the adjacent portion of the hollow glass fabric 2 having an area with an adhesive or the like, the internal space 2d of the hollow glass fabric 2 generated by the erecting of the glass fiber bundle 2c will be described later. , Isolated from the tank interior.

A detection pipe 5 made of a corrosion-resistant resin is additionally provided inside the tank, and the content liquid flowing into the internal space 2d of the hollow glass fabric 2 can be detected inside the detection pipe 5. The leak detector 6 is dropped, and the lead wire 6a of the leak detector 6 is led out through the inside of the detection pipe 5. That is, as shown in FIG. 4, the detection pipe 5 has a flange 5a at a portion near the lower end,
The flange 5a is resin-welded to the surface of the hollow glass fabric 2 covering the bottom surface of the concrete frame 1.
Since the communication hole 7 at the lower end protruding downward from a is communicated with the internal space 2d of the hollow glass fabric 2, the hollow glass fabric 2 covering the bottom surface of the concrete skeleton 1 by breaking the hollow glass fabric 2 at an arbitrary position. When the content liquid flows out into the inner space 2d of the second detector 2, the leak detector 6 dropped into the inside of the detection pipe 5 is responsive, and a warning signal from the leak detector 6 warns of liquid leakage.

FIGS. 5 (a) to 5 (d) show a construction procedure of a corrosion-resistant concrete tank according to the present invention.
As shown in (a), a thick primer solution 3 is applied to the inner surface of the concrete skeleton 1. As the primer liquid 3, for example, a liquid having corrosion resistance, such as a vinyl ester resin, and having a property of not easily breaking after solidification is preferable.

After the application of the primer solution 3, FIG. 5 (b)
As shown in the figure, the hollow glass fabric 2 is laminated on the primer solution 3 before the primer solution 3 is solidified.
Is adhered to the primer liquid 3. Therefore, in this step, a part of the primer liquid 3 is impregnated by the capillary action between the fibers of the fabric 2b of the hollow glass fabric 2, and the hollow glass fabric 2 is adhered to the inner surface of the concrete body 1 by the primer solution 3. .

Thereafter, as shown in FIG. 5 (c), an anticorrosion liquid 8 composed of the same resin as the primer liquid 3 is applied to the cloth 2a on the surface of the hollow glass fabric 2, and the anticorrosion liquid 8 is applied to the cloth. 2a, the resin solution reaches the glass fiber bundles 2c as the impregnation of the primer solution 3 and the anticorrosion solution 8 proceeds, and impregnates the glass fiber bundles 2c by capillary action. Each glass fiber bundle 2c is shown in FIG.
As shown in (d), the hollow glass fabric 2 stands up naturally, solidifies after a certain period of time while maintaining this state, and
Automatically forms a wide internal space 2d with a flow path maintained by the glass fiber bundle 2c.

Since the corrosion-resistant concrete tank of the illustrated embodiment has the above structure, the primer solution 3 and the corrosion-resistant solution 8
Although the anticorrosion function is maintained by the hollow glass fabric 2 impregnated with, the interior space 2d of the hollow glass fabric 2 functions as an adiabatic space into which the content liquid does not normally flow. Accordingly, although the inside of the corrosion-resistant concrete tank is kept warm by the presence of the internal space 2d, when cooling (heating) of the content liquid is desired, a cooling liquid or a cooling gas is supplied to the internal space 2d of the hollow glass fabric 2. It can also flow and function as a cooling jacket. Of course, in the case of such cooling (heating), a plurality of hollow glass fabrics 2
Can be divided into a plurality of cooling liquid (heating liquid) passages.

When one of the hollow glass fabrics 2 is broken by a concrete structural crack or the like, the content liquid flows into the internal space 2d of the broken hollow glass fabric 2, and the internal space 2d is formed by a flow path. Since the cross section is a flow path having a small fluid resistance, a part of the outflow content liquid surely flows into the internal space 2d. Then, the content liquid that has flowed into the internal space 2d of any of the hollow glass fabrics 2 flows downward due to gravity, and finally accumulates in the internal space 2d of the hollow glass fabric 2 that covers the bottom surface of the concrete skeleton 1. The outflow of the content liquid can be reliably detected by the leak detector 6 located in the internal space 2d.

[0017]

As is clear from the above description, according to the present invention, construction and construction management are easy, and the outflow of the content liquid due to the destruction of the corrosion-resistant resin tank can be immediately detected. Can be prevented. And since the internal space of the hollow glass fabric of the present invention functions as a heat insulating space, there is inevitably a function of keeping heat (insulation), and the corrosion-resistant concrete is a versatile application in which the internal space can be used for cooling (heating) the liquid content. A tank can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a corrosion-resistant concrete tank according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of the corrosion-resistant concrete tank.

FIG. 3 is an enlarged view of a hollow glass fabric used in the corrosion-resistant concrete tank.

FIG. 4 is an enlarged view of a main part of a detection pipe base of the corrosion-resistant concrete tank.

5 (a) to 5 (d) are construction process diagrams of a corrosion-resistant concrete tank according to the present invention.

FIG. 6 is a perspective view of a main part of a conventional corrosion-resistant concrete tank.

FIG. 7 is an enlarged perspective view of a main part of the corrosion-resistant concrete tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete frame 2 Hollow glass fabric 2a, 2b fabric 2c Glass fiber bundle 2d Internal space 3 Primer liquid 4 FRP tape 5 Detection pipe 6 Leak detector 7 Communication hole 8 Corrosion-proof liquid

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[Procedure amendment]

[Submission date] June 30, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Corrosion-resistant concrete tank construction method and corrosion-resistant concrete tank

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anticorrosion structure for a concrete tank, and more particularly, to a method for constructing an anticorrosion concrete tank and an anticorrosion concrete tank.

[0002]

2. Description of the Related Art As is well known, in a chemical storage tank or a waste liquid tank having a concrete structure, the concrete surface is covered with a corrosion-resistant FRP lining in order to prevent corrosion due to a liquid content. The concrete structural cracks are inevitable. In other words, if a concrete structural crack occurs, the FRP lining may be cracked or damaged. However, if such a situation is left undetected, the content liquid will penetrate into the basement and In some cases, soil contamination accidents may occur.

[0003] In order to prevent such an accident of soil contamination due to leakage of the liquid content, a corrosion-resistant concrete tank as shown in FIGS. 6 and 7 has been conventionally proposed. That is, reference numeral "A" in FIG. 6 denotes a concrete frame, and the inner surface of the concrete frame A is covered with a number of corrosion-resistant sheets B having corrosion resistance to the content liquid. That is, each of the anticorrosion sheets B bonded to the inner surface of the concrete skeleton A via the adhesive layer C
Are slightly spaced apart from each other to form leak grooves D into which the effluent contents can flow, and the surfaces of these leak grooves D are covered with a corrosion-resistant tape E resin-welded to the surface of the corresponding corrosion-resistant sheet B. It is.

A gutter-shaped member F having a "C" -shaped cross section is fixed to the ridge of the inner surface of the concrete frame A with an adhesive or the like. The leak grooves D are communicated with each other. Therefore, in the corrosion-resistant concrete tank having such a structure, when the corrosion-resistant sheet B is cracked or broken due to a concrete structural crack or the like, a part of the outflowing liquid flows into the nearby leak groove D, forming a gutter-like shape. The trough-shaped member F at the bottom through the member F
If the leak detector G for detecting the leaked liquid is located in the gutter-shaped member F at the bottom, the soil contamination accident due to the leakage of the liquid content can be prevented beforehand.

[0005]

However, in order to arrange the dense leak grooves D, the number of the corrosion-resistant sheets B and the number of the corrosion-resistant tapes E are increased, and the adhesion of the corrosion-resistant sheet B to the inner surface of the concrete frame A and the corrosion-resistant tape are increased. The time and labor required for resin welding of E significantly increase, and if the entire anticorrosive tape E is not completely adhered in a liquid-tight manner, a part of the content liquid flows into the leak groove D. The management of the adhesion state of E was troublesome. In the case of the leak groove D having a small cross-sectional area, if the anticorrosion sheet B or the anticorrosion tape E is severely damaged, a part of the content liquid flowing out becomes a thin leak groove D having a large fluid resistance.
In some cases, it did not flow effectively into the air, and the leak state could not be detected reliably. Further, in a chemical storage tank or the like having a concrete structure, the tank itself may be required to have a heat retaining function, that is, a heat insulating ability. However, it is difficult to add such a function to the above-described structure.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional corrosion-resistant concrete tank, the present invention is simple in construction and construction management, can reliably detect leakage of the liquid content, and has a heat insulating property in the tank structure itself. Another object of the present invention is to provide a method for constructing a corrosion-resistant concrete tank and a corrosion-resistant concrete tank.

[0007]

According to the present invention, there is provided a corrosion-resistant concrete tank in which a corrosion-resistant corrosion-resistant resin layer is laminated on the inner surface of a concrete skeleton. A coating step and a hollow glass fabric in which two sheet-like glass fiber fabrics are connected by a large number of glass fiber bundles are laminated on the surface of the primary corrosion resistant resin liquid, and a part of the primary corrosion resistant resin liquid is hollowed out. A step of impregnating between fibers of the glass fabric, and applying a secondary corrosion-resistant resin solution same as the primary corrosion-resistant resin solution to the surface of the hollow glass fabric before completely solidifying the primary corrosion-resistant resin solution. A step of sufficiently impregnating the fibers of the hollow glass fabric with the resin liquid to erect the glass fiber bundle, and a step of waiting for the primary corrosion-resistant resin liquid and the secondary corrosion-resistant resin liquid to solidify due to the lapse of time after this step. Preparation It is intended to propose the construction methods of corrosion protection concrete tank.

In the following description of a preferred embodiment of the present invention, 1) a method for constructing a corrosion-resistant concrete tank in which the primary corrosion-resistant resin solution and the secondary corrosion-resistant resin solution are vinyl ester resins, 2) the construction method 3) a corrosion-resistant concrete tank provided with a leak detector positioned in the interior space of the hollow glass fabric covering the bottom surface of the concrete frame and detecting outflow of the content liquid into the interior space; 4) The leak detector is a corrosion-resistant concrete tank positioned inside a detection pipe having a lower end fixed to the hollow glass fabric covering the inside of the concrete body with the inside of the pipe connected to the internal space. Is done.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. 1 and 2 show a corrosion-resistant concrete tank obtained according to the present invention. The entire inner surface of a concrete frame 1 of the corrosion-resistant concrete tank is covered with a plurality of hollow glass fabrics 2 to be treated in a manner described in detail below. is there. That is, this hollow glass fabric 2 is, as shown in FIG. 3, "two sheet-like glass fiber fabrics 2a, 2b.
The fabric is a fabric in which the spaces are connected by a large number of glass fiber bundles 2c ", and the flexible hollow glass fabric 2 is commercially available, for example, under the trade name" PARA BEAM "sold by Chori Corporation.

Reference numeral "3" in FIGS. 1 and 2 denotes a primary corrosion-resistant resin solution composed of, for example, a vinyl ester resin, and the primary corrosion-resistant resin solution 3 is a hollow glass fabric for the inner surface of the concrete frame 1. 2 is applied to the inner surface before sticking, and a part thereof is impregnated between the fibers of the hollow glass fabric 2. Further, since the anticorrosion tape 4 is adhered to the surface of the adjacent portion of the hollow glass fabric 2 having an area with an adhesive or the like, the internal space 2d of the hollow glass fabric 2 generated by the erecting of the glass fiber bundle 2c will be described later. , Isolated from the tank interior.

A detection pipe 5 made of a corrosion-resistant resin is additionally provided inside the tank, and the content liquid flowing into the internal space 2d of the hollow glass fabric 2 can be detected inside the detection pipe 5. The leak detector 6 is dropped, and the lead wire 6a of the leak detector 6 is led out through the inside of the detection pipe 5. That is, as shown in FIG. 4, the detection pipe 5 has a flange 5a at a portion near the lower end,
The flange 5a is resin-welded to the surface of the hollow glass fabric 2 covering the bottom surface of the concrete frame 1.
Since the communication hole 7 at the lower end protruding downward from a is communicated with the internal space 2d of the hollow glass fabric 2, the hollow glass fabric 2 covering the bottom surface of the concrete skeleton 1 by breaking the hollow glass fabric 2 at an arbitrary position. When the content liquid flows out into the inner space 2d of the second detector 2, the leak detector 6 dropped into the inside of the detection pipe 5 is responsive, and a warning signal from the leak detector 6 warns of liquid leakage.

FIGS. 5 (a) to 5 (d) show a construction procedure of a corrosion-resistant concrete tank according to the present invention.
As shown in (a), a thick primary corrosion resistant resin liquid 3 is applied to the inner surface of a concrete skeleton 1. The primary corrosion-resistant resin liquid 3 is preferably a liquid such as a vinyl ester resin which has corrosion resistance and does not easily break after solidification.

After the application of the primary corrosion resistant resin solution 3, FIG.
As shown in (b), the hollow glass fabric 2 is laminated on the primary corrosion-resistant resin liquid 3 before the primary corrosion-resistant resin liquid 3 is solidified, and the fabric 2b of the hollow glass fabric 2 adheres to the primary corrosion-resistant resin liquid 3 Is done. Therefore, in this step, the hollow glass fabric 2
Part of the primary corrosion-resistant resin liquid 3 is impregnated between the fibers of the cloth 2b by capillary action, and the hollow glass fabric 2 is adhered to the inner surface of the concrete frame 1 by the primary corrosion-resistant resin liquid 3.

Thereafter, as shown in FIG. 5 (c), a secondary corrosion-resistant resin liquid 8 composed of the same resin as the primary corrosion-resistant resin liquid 3 is applied to the cloth 2a on the surface of the hollow glass fabric 2. The cloth 2a is impregnated with the secondary corrosion-resistant resin liquid 8. However, as the impregnation of the primary corrosion-resistant resin liquid 3 and the secondary corrosion-resistant resin liquid 8 progresses, these resin liquids also reach the glass fiber bundle 2c. , Each of these glass fiber bundles 2 by capillary action
5c, the respective glass fiber bundles 2c naturally stand up as shown in FIG. 5 (d), and solidify after a certain period of time while maintaining this state. The wide internal space 2d of the flow path maintained by the fiber bundle 2c is automatically formed.

Since the corrosion-resistant concrete tank of the illustrated embodiment has the above-described structure, the corrosion-resistant function is maintained by the hollow glass fabric 2 impregnated with the primary corrosion-resistant resin liquid 3 and the secondary corrosion-resistant resin liquid 8. The internal space 2d of the hollow glass fabric 2 functions as a space into which the content liquid does not normally flow. Therefore, if the inside of the corrosion-resistant concrete tank is kept warm by the presence of the internal space 2d, but cooling (heating) of the content liquid is desired, the hollow glass fabric 2
The cooling liquid or the cooling gas is allowed to flow through the internal space 2d of
It can also function as a cooling jacket. Of course,
In the case of such cooling (heating), a plurality of hollow glass fabrics 2 can be divided into a plurality of cooling liquid (heating liquid) passages.

When one of the hollow glass fabrics 2 is broken by a concrete structural crack or the like, the content liquid flows into the internal space 2d of the broken hollow glass fabric 2, and the internal space 2d is formed by a flow path. Since the cross section is a flow path having a small fluid resistance, a part of the outflow content liquid surely flows into the internal space 2d. Then, the content liquid that has flowed into the internal space 2d of any of the hollow glass fabrics 2 flows downward due to gravity, and finally accumulates in the internal space 2d of the hollow glass fabric 2 that covers the bottom surface of the concrete skeleton 1. The outflow of the content liquid can be reliably detected by the leak detector 6 located in the internal space 2d.

In the above-described embodiment of the present invention, the hollow glass fabric is impregnated with the primary corrosion-resistant resin solution and the secondary corrosion-resistant resin solution applied to the inner surface of the concrete body. After applying another primer layer, a primary corrosion-resistant resin solution may be applied to the surface of the primer layer. In the embodiment of the present invention described above, after the primary corrosion-resistant resin liquid 3 and the secondary corrosion-resistant resin liquid 8 are solidified, an anti-corrosion FRP lining layer is separately formed on the surface of the hollow glass fabric 2, and the content liquid is formed. May be increased in safety against leakage.

[0018]

As is clear from the above description, according to the present invention, construction and construction management are easy, and the outflow of the content liquid due to the destruction of the corrosion-resistant resin layer can be immediately detected, thereby preventing soil contamination. it can. And since the internal space of the hollow glass fabric of the present invention functions as a heat insulating space, there is inevitably a function of keeping heat (insulation), and the corrosion-resistant concrete is a versatile application in which the internal space can be used for cooling (heating) the liquid content. A tank can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a corrosion-resistant concrete tank according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of the corrosion-resistant concrete tank.

FIG. 3 is an enlarged view of a hollow glass fabric used in the corrosion-resistant concrete tank.

FIG. 4 is an enlarged view of a main part of a detection pipe base of the corrosion-resistant concrete tank.

5 (a) to 5 (d) are construction process diagrams of a corrosion-resistant concrete tank according to the present invention.

FIG. 6 is a perspective view of a main part of a conventional corrosion-resistant concrete tank.

FIG. 7 is an enlarged perspective view of a main part of the corrosion-resistant concrete tank.

[Description of Signs] 1 Concrete body 2 Hollow glass fabric 2a, 2b Fabric 2c Glass fiber bundle 2d Internal space 3 Primary corrosion-resistant resin liquid 4 Corrosion-proof tape 5 Detection pipe 6 Leak detector 7 Communication hole 8 Secondary corrosion-resistant resin liquid

Claims (5)

[Claims] 1. A step of applying a corrosion-resistant thick primer solution to an inner surface of a concrete body in a corrosion-resistant concrete tank in which a corrosion-resistant corrosion-resistant resin layer is laminated on the inner surface of a concrete body; A step of laminating a hollow glass fabric in which a number of glass fiber bundles are connected between glass fiber fabrics on the surface of the primer solution to impregnate a part of the primer solution between the fibers of the hollow glass fabric; Before the solidification, the same anticorrosive solution as the primer solution is applied to the surface of the hollow glass fabric, and the anticorrosive solution is sufficiently impregnated into the fibers of the hollow glass fabric to erect a glass fiber bundle. Waiting for the primer liquid and the anticorrosion liquid to solidify after a lapse of time. 2. The method according to claim 1, wherein the primer liquid and the anticorrosion liquid are vinyl ester resins. 3. A corrosion-resistant concrete tank obtained by the method according to claim 1. 4. A leak detector which is located in an inner space of said hollow glass fabric covering a bottom surface of said concrete frame and detects outflow of a content liquid into said inner space. The corrosion-resistant concrete tank described. 5. The leak detector is located inside a detection pipe having a lower end fixed to the hollow glass fabric covering the inner surface of the concrete body with the inside of the pipe being connected to the internal space. The corrosion-resistant concrete tank described.