JP2003285381A - Concrete anticorrosion plate and method for producing the same - Google Patents

Abstract

(57) [Problem] To provide a concrete anticorrosion plate provided with an anchor material which does not collapse when pouring concrete and can exert a good anchoring effect on concrete. SOLUTION: An anchor material 2 formed by forming a perforated plate made of a thermoplastic resin into a corrugated shape is joined to one surface of a base plate 3 provided with a fiber reinforced resin layer and integrated to form a concrete anticorrosion plate 1. . Since the corrugated anchoring material has appropriate rigidity, it is hardly crushed by the poured concrete, is securely embedded in the concrete, exhibits a good anchoring effect, and secures the base plate 3 to the concrete surface. Strength can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete anticorrosion plate used for anticorrosion of concrete products, concrete structures and the like, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, a synthetic resin lining method has been known as a method for preventing concrete from being corroded by a fluid, and it is also known to use a fiber reinforced resin layer as a lining layer. For example, it is known to provide a fiber-reinforced resin layer for corrosion protection on the inner surface of a concrete pipe. Conventionally, in order to provide the fiber reinforced resin layer on the inner surface of the concrete pipe, a method of forming the fiber reinforced resin layer on the inner surface of the concrete pipe by a hand lay-up method has been adopted. However, the fiber-reinforced resin layer produced by this method has a problem that it has a small adhesive force to the inner surface of the concrete pipe and is easily peeled off.

Therefore, in order to increase the adhesion to concrete, a corrosion protection plate for concrete having a structure in which a three-dimensional knit is attached to one surface of a synthetic resin layer composed of an FRP layer forming a corrosion protection layer is proposed in Japanese Utility Model Registration No. 2594065. ing. This concrete anticorrosion plate is fixed on the concrete surface in the state where the three-dimensional knit is embedded in the concrete by pouring and solidifying the concrete set in the formwork for pouring the concrete, and the anchor effect by the three-dimensional knit It is possible to increase the adhesion strength to concrete.

[0004]

However, in the anticorrosion plate for concrete described in this publication, a three-dimensional fabric is used as an anchor for concrete. However, since the three-dimensional fabric is soft, this anticorrosion plate for concrete is used. When placing it in the formwork and pouring concrete, the solid fabric may be crushed by sand lumps and pebbles,
Therefore, a sufficient anchor effect cannot be exhibited and peeling may occur.

The present invention has been made in view of the above problems, and a concrete anticorrosion plate having an anchor material that does not collapse when pouring concrete and can exert a good anchor effect on the concrete, and a method for producing the same. The challenge is to provide.

[0006]

Means for Solving the Problems As a result of intensive studies by the inventors of the present invention for a structure capable of exerting a good anchoring effect on concrete, a corrugated perforated plate made of a thermoplastic resin is extremely effective. It was found that the present invention has been achieved. That is, the concrete anticorrosion plate of the present invention is one in which an anchor material formed by molding a perforated plate material made of a thermoplastic resin into a corrugated shape is joined to a base plate provided with a fiber reinforced resin layer and integrated. In the concrete anticorrosion plate with this configuration, the concrete is anchored by placing it in a formwork for pouring concrete or using the concrete anticorrosion plate itself as a formwork and pouring the concrete into the formwork. It does not crush the corrugated shape of the material, but penetrates inside and solidifies.
For this reason, the anchor material is securely embedded in the concrete, the base plate is firmly fixed to the concrete surface, the base plate hardly peels, and the anticorrosion effect of the base plate is exhibited for a long period of time. be able to. The concrete to be used for the concrete anticorrosion plate of the present invention is not limited to a concrete in a narrow sense in which sand and aggregate are mixed with cement, but also includes cement products such as mortar and resin mortar.

A first method of the present invention for producing a concrete anticorrosion plate having the above-mentioned constitution is to supply mat-shaped reinforcing fibers and a room temperature curable liquid resin on a molding surface having a desired shape, and use the resin as the reinforcing fibers. On the other hand, an anchor material formed by corrugating a perforated plate made of a thermoplastic resin into a corrugated shape is impregnated and defoamed so that the top of the corrugated shape located on one surface is embedded in the liquid resin. And the resin is cured in that state. And this way,
It is possible to manufacture a concrete anticorrosion plate in which a corrugated anchor material is joined to one surface of a base plate, and moreover, by forming the molding surface used at that time into a desired shape such as a flat surface or a curved surface, the desired shape can be obtained. A concrete anticorrosion plate can be easily manufactured.

In the second method of the present invention, a thermosetting resin is applied on a lower carrier film which is running on a predetermined horizontal running path, and mat-like reinforcing fibers are superposed on it. An anchor material formed by molding a perforated plate material made of a thermoplastic resin into a corrugated shape is stacked on it, and fibers or powders are supplied to the inside of the lower top of the corrugated shape of the anchor material,
Next, the upper carrier film is superposed on the anchor material, and then the upper and lower carrier films and the laminate sandwiched therebetween are passed between a pair of squeeze rollers to impregnate and defoam the resin, and then cure. Heat through the furnace
It is characterized by being cured. With this method, a concrete anticorrosion plate in which a corrugated anchor material is bonded to one surface of a base plate can be manufactured at low cost by a continuous molding method. Moreover, before the impregnation / defoaming process, the fiber or powder is supplied to the inside of the lower top of the corrugated shape of the anchor material, so that the fiber or powder sucks up the resin, and The top portion on the side can be reliably embedded in the resin, and the bonding strength between the anchor material and the base plate can be increased.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The concrete anticorrosion plate and the method for producing the same of the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a perspective view schematically showing a concrete anticorrosion plate 1 according to one embodiment of the present invention, FIG. 2 is a schematic perspective view showing a part of the concrete anticorrosion plate, and FIG.
It is a schematic sectional drawing which shows the state which attached to the concrete surface. The concrete anticorrosion plate 1 comprises an anchor material 2 formed by corrugating a perforated plate material made of a thermoplastic resin, and a fiber reinforced resin layer bonded to a corrugated top portion 2a located on one surface thereof. The base plate 3 is provided and is attached to the surface of the concrete 4 in a form in which the anchor material 2 is embedded in the concrete 4.

The anchor material 2 is preferably in a state in which when the concrete anticorrosive plate 1 is set in a mold for pouring concrete and the concrete is poured, the anchor material 2 is surely buried in the concrete. It is provided so that the anchor effect can be exerted, and it is provided with appropriate rigidity so that it will not be crushed by the poured concrete or aggregate in it, and the one with many openings through which the concrete can pass is used. It
Here, by making the anchor material 2 into a corrugated shape, it is easy to give rigidity to the extent that it is not crushed by the poured concrete, and the corrugated anchor material 2 has a corrugated traveling direction (perpendicular to the extending direction of the apex). Since the concrete anticorrosion plate 1 is easy to bend in the direction of doing), there is an advantage that it is easy to handle when manufacturing or using the concrete anticorrosion plate 1.

As a preferred example of the perforated plate material for forming the anchor material 2, as shown in FIG. 4, the thermoplastic resin monofilaments 5 are arranged vertically and horizontally, and their intersections are fused and formed. The mesh member 2A can be mentioned, and the anchor member 2 can be manufactured at low cost by molding the mesh member 2A in a corrugated shape.
Here, the diameter of the single fiber 5 is preferably 700 μm or more from the viewpoint of imparting appropriate rigidity to the formed anchor material 2, and the size of the mesh is from the viewpoint of ensuring good passage of concrete. It is preferable to set it so as to have an opening area of ² mm ² or more. Examples of the material of the single fiber 5 include polyethylene fiber (particularly preferably high strength polyethylene fiber), polyester fiber, polyamide fiber and the like. As a method of forming the perforated plate material such as the mesh body 2A into a corrugated shape, a method of passing it between heated gears can be exemplified. A method other than this may be used. The corrugated shape given to the anchor material 2 is arbitrary as long as the tops are alternately formed on both surfaces, and as a representative example, as shown in FIG. 5A, the top and bottom are arcuate. , A crank shape shown in FIG. 5 (b), a folded plate shape shown in FIG. 5 (c), and the like. When the height h (see FIG. 2) of the corrugated shape given to the anchor material 2 is small, the anchor effect is small, and when it is large, the anchor effect is increased, but it is bulky and difficult to handle such as storage and the cost is high. Therefore, it may be appropriately determined in consideration of these. Specifically, the anchor effect and handleability are set so that the protruding height of the anchor material 2 from the base plate 3 in a state where the anchor material 2 is attached to the base plate 3 is about 3 to 30 mm. It is preferable from the standpoint of cost and the like, and further, the protrusion height is 5 to 2
It is more preferable that the distance is about 0 mm. Therefore, the height h of the wavy shape of the anchor material 2 is slightly larger than this numerical range (anchor material 2) so that these protruding heights can be secured.
It may be set in consideration of the embedding amount in the base plate 3), specifically, it may be set to about 4 to 31 mm, more preferably about 6 to 21 mm. Also, the pitch p
Is preferably about 0.5 to 2 times the height h.

The base plate 3 is for covering the surface of concrete to form an anticorrosion coating excellent in strength, anticorrosion property, etc., and is entirely formed of a fiber reinforced resin layer excellent in these properties. There is. If necessary, a laminated structure of a fiber reinforced resin layer and another material layer (for example, an incombustible material or a foamed incombustible material for improving heat resistance) may be used. When a laminated structure is adopted, it is preferable that both surfaces have fiber-reinforced resin layers. When the base plate 3 is formed only of the fiber-reinforced resin layer, the thickness thereof is about 2 to 3 mm when used under conditions that are not so severe, such as the inner surface of the concrete pipe.
It is preferable to select about 3 to 10 mm in a harsh place of use such as a seawall. It should be noted that the base plate 3 is provided with a strength that can be used as a formwork for concrete pouring, and the concrete anticorrosion plate 1 is used as a formwork when pouring concrete, and after concrete pouring It is also possible to use it in the form of leaving it bonded to the concrete surface to form an anticorrosion coating (hereinafter, the form that is left on the concrete surface is referred to as a permanent form). Base plate 3
As the material of the fiber-reinforced resin layer, the material used for ordinary FRP can be appropriately used. For example, as the reinforcing fiber,
Inorganic fibers such as glass fibers, aluminum hydroxide fibers and carbon fibers, organic fibers such as vinylon fibers, polyester fibers and aramid fibers can be used, and as the resin, unsaturated polyester resin, epoxy resin, vinyl ester Resin, urethane resin, acrylic urethane-based resin, acrylic resin and the like can be mentioned. When an unsaturated polyester resin is used, its type may be any of ortho type, iso type, soft type, etc., and may be appropriately determined depending on the place of use. Moreover, you may mix a suitable filler and a coloring agent in resin as needed.

When the base plate 3 is used as a permanent mold, the shape of the base plate 3 naturally corresponds to the surface of the concrete product to be manufactured. Further, even when the base plate 3 is not used as a permanent form and is simply used as an anticorrosion coating on the concrete surface, the shape of the base plate 3 may be a shape corresponding to the concrete surface. The base plate 3 is thin,
When it can be deformed, it does not necessarily have to be matched to the concrete surface shape, and it may be simply flat as shown in FIG. Even when the base plate 3 is flat as described above, when the base plate 3 is attached to a curved surface such as an inner surface of a concrete pipe, the concrete anticorrosion plate 1 is curved and set on the curved inner surface of the formwork, and the concrete is placed thereon. By pouring, the concrete anticorrosion plate 1 can be attached to the curved surface of the concrete.

In order to bond and integrate the anchor material 2 to the base plate 3, the top portion 2a of one surface of the anchor material 2 is embedded in the resin in a fluid state when the fiber reinforced resin layer constituting the base plate 3 is molded. Is set and the resin is cured in that state. At this time, the corrugated top portion 2a has the base plate 3
It is possible to increase the bonding strength between the resin and the anchor material 2 by hardening the resin so that it enters into the resin (a state in which the resin also wraps around the inside of the top portion 2a) and embedding the top portion 2a in the cured resin. Therefore, it is preferable. To make the corrugated top 2a of the anchor material 2 enter the resin forming the base plate 3 when the base plate 3 is formed,
As shown in (a), the anchor material 2 is strongly pressed against the resin-impregnated reinforcing fiber layer 3A in which the reinforcing fiber 3a is impregnated with the resin 3b before forming the base plate 3, and the top portion 2a of the anchor material 2 is made of resin. The method of pushing it into 3b can be mentioned. As an alternative method or a method used in combination with this method, as shown in FIG. 6B, the anchor material 2 is brought into contact with the resin-impregnated reinforcing fiber layer 3A and the lower top part of the anchor material 2 is contacted. Inside 2a (the part that becomes the valley bottom)
The fibers 8 or the powder are placed on the top surface of the anchor material 2 and the resin 3b is sucked up by the fibers 8 or the powder.
A method of wrapping around the inside of a can be mentioned. When the method of wrapping the resin 3b around the fibers 8 or powder is adopted as described above, the resin 3b can be surely pressed without strongly pressing the anchor material 2 against the resin-impregnated reinforcing fiber layer 3A.
Wrap around the inside of the top 2a, and put the top 2a into the resin 3b.
Since it can be embedded in the resin, the top portion 2a can be reliably embedded in the resin, and there is an advantage that the bonding strength of the anchor material 2 to the base plate 3 can be increased. Further, since the anchor material 2 does not have to be strongly pressed against the resin-impregnated reinforcing fiber layer 3A, as will be described later, the concrete anticorrosion plate 1
Can be continuously molded. As the fiber or powder used here, one having good wetting characteristics with respect to the resin is used, and specifically, the reinforcing fiber 3 such as glass fiber is used.
The same fibers as in a, powders of calcium carbonate, aluminum hydroxide and the like can be mentioned. When using a fiber, the fiber may be either a short fiber or a long fiber,
Short fibers of about 5 mm or less are preferable because they can be supplied to the inside of the narrow top portion 2a below the anchor material 2 by simply sprinkling them from above the anchor material 2. When supplying the fibers or powder to the inner side of the lower top portion 2a of the anchor material 2, not only the case where only the fibers or powder is supplied, but these fibers or powder are impregnated with resin in advance. Alternatively, it may be supplied in that state.

Next, a method of using the concrete anticorrosion plate 1 having the above structure will be described. The concrete anticorrosion plate 1 is set in a mold for producing a concrete product so that the anchor material 2 faces inward, and concrete is poured into the mold. The poured concrete enters the interior of the anchor material 2 without being crushed and solidifies. Therefore, as shown in FIG. 3, the anchor material 2 bites into the concrete 4, and the base plate 3 is firmly fixed to the surface of the concrete 4 to form an anticorrosion coating. In the concrete product thus obtained,
The base plate 3 hardly peels off, and the anticorrosion effect of the base plate 3 can be exerted for a long period of time.
When the concrete anticorrosion plate 1 is attached to a curved surface such as an inner surface of a concrete pipe, as shown in FIG. 9, the curved surface 17 facing the space 16 for concrete driving formed in the formwork 15, The concrete anticorrosion plate 1 is set in a curved state. At this time, since the wavy anchor material 2 is easily bent in the traveling direction of the wavy shape,
The concrete anticorrosion plate 1 can be curved to follow the curved surface 17. Then, by pouring concrete into the space 16 and solidifying it, a concrete product in which the concrete anticorrosion plate 1 is fixed to the curved inner surface can be manufactured.

Next, a method of manufacturing the concrete anticorrosion plate 1 having the base plate 3 composed of only the fiber reinforced resin layer will be described. FIG. 7 shows a method of manufacturing a concrete anticorrosion plate by a batch method. First, as shown in FIG. 7A, mat-shaped reinforcing fibers 3a are formed on the molding surface 11a of the mold 11.
Then, the room temperature curable liquid resin 3b is supplied, and the reinforcing fibers are impregnated and defoamed with a defoaming roller or the like to form the resin-impregnated reinforcing fiber layer 3A. Note that these operations may be performed by a hand layup method using a resin-impregnated mat. Next, as shown in FIG. 7 (b), the anchor material 2 formed in a corrugated shape in advance is placed on the resin-impregnated reinforcing fiber layer 3A, and the holding plate 12 is placed thereon, and the holding plate 12 is placed. The anchor material 2 and the lower top part 2
It is pressed so that a is embedded in the liquid resin 3b. Then, the resin is cured in that state. As described above, the anchor material 2 is attached to one surface of the base plate 3 composed of the fiber reinforced resin layer.
It is possible to manufacture the concrete anticorrosion plate 1 in which the above are joined.
Here, in FIG. 7, the molding surface 11a of the mold 11 is flat, and thus the planar concrete anticorrosion plate 1 can be manufactured, but the shape of the molding surface 11a is not limited to this.
It can be changed as needed. For example, the curved surface-shaped concrete anticorrosion plate 1 can be manufactured by forming the molding surface 11a of the mold 11 into a curved surface. Thus, this method has the advantage of producing a concrete anticorrosion plate having a desired shape.

FIG. 8 shows a continuous forming line 20 for producing the flat concrete anticorrosion plate 1 by the continuous forming method. Hereinafter, the structure of the continuous forming line 20 and the forming method by the continuous forming line 20 will be described. To do. In FIG. 8, reference numeral 21 denotes a lower carrier film, which is pulled out from the carrier film roll 22 and runs along a predetermined horizontal path. A resin supply device 25 applies a liquid resin 3b onto the lower carrier film 21 to a predetermined thickness, and supplies a resin tank 26 containing the liquid resin and the resin tank 26 onto the lower carrier film 21. The doctor knife 27 and the like for regulating the resin thus formed to a predetermined thickness are provided. The resin 3b used in this production line is a thermosetting type,
Since it is heated together with the thermoplastic resin anchor material 2 as described later, it is preferable to employ a material having a low curing temperature in order to avoid heating and softening of the anchor material 2.

Reference numeral 30 is a reinforcing fiber mat forming / supplying device for supplying the reinforcing fiber 3a in the form of a mat onto the resin 3b on the lower carrier film 21. The reinforcing fiber mat forming / supplying device 30 includes a conveyor 31 that runs horizontally.
And a cutting device 35 disposed above the cutting device 35, which cuts continuous reinforcing fibers 33 such as glass fiber roving into a predetermined length and discharges the reinforcing fibers 3a as short fiber-shaped reinforcing fibers 3a onto the conveyor 31, and an inclined discharging conveyor 36. And the like, and the cutting device 35 discharges the reinforcing fibers 3a in the form of short fibers onto the traveling conveyor 31 so that the reinforcing fibers are stacked on the conveyor 31 to form a mat having a substantially constant thickness, and then discharged. The conveyor 36 can continuously supply the mat-shaped reinforcing fibers 3 a onto the lower carrier film 21.

The reference numeral 40 indicates the anchor material 2 on the reinforcing fiber 3a running while being held by the lower carrier film 21.
Anchor material supply device for stacking. The anchor material supply device 40 includes means (not shown) for holding an anchor material roll in a roll shape of an anchor material formed in a corrugated shape in advance, and the anchor material 2 pulled out from the anchor material roll. Is provided with a guide roller 42 or the like for stacking on the lower carrier film 21, and the continuous anchor material 2 can be pulled out from the anchor material roll and continuously stacked on the reinforcing fibers 3a on the lower carrier film 21. In addition, instead of forming the anchor material 2 in a corrugated shape in advance and setting it in the anchor material supply device in a state of being wound in a roll shape, the flat strip-shaped net body 2 shown in FIG. 4 is used.
A is wound into a roll and is set in the form of a mesh roll in the anchor material supply device, and the mesh body 2 is placed in the anchor material supply device.
A gear for forming A into a corrugated shape is provided, and the mesh 2A drawn from the mesh roll is continuously molded into a corrugated shape with the gear to form an anchor material, and then supplied onto the lower carrier film 21. It may be configured.

In FIG. 8, reference numeral 45 designates a lower top portion 2a of the anchor material 2 held on the lower carrier film 21.
Is a fiber supply device for supplying the fibers 8 to the inside of the.
The fiber supply device 45 cuts a continuous fiber 46 such as a glass fiber roving into a fiber 8 having a predetermined length (for example, about 5 mm) and discharges it, and receives the fiber 8 from the cutting device 47. Further, a vibrating screen 48 and the like for applying vibration to disperse and further discharging is provided, and the fiber 8 can be sprinkled on the anchor material 2 in a disaggregated state. Most of the sprinkled fibers 8 are in the valleys of the anchor material 2, that is, the tops 2a below the anchor material 2.
Are stored inside [see FIG. 6 (b)]. Instead of sprinkling the fibers 8 on the anchor material 2 at this position, powder may be sprinkled or fibers or powder impregnated with resin may be sprinkled.

Reference numeral 50 denotes an upper carrier film, which is fed from the carrier film 51 and is superposed on the anchor material 2 on the lower carrier film 21 by the guide roller 52. Reference numeral 55 denotes an impregnation / defoaming device for impregnating / defoaming a resin, which includes two squeeze rollers 56, 57 arranged above and below the lower carrier film 11 and the upper carrier film 42. 60
Is a curing furnace for heating and curing the resin.

Reference numerals 62 and 63 denote guide rollers 64 and 6 disposed above and below the horizontal traveling portions of the lower carrier film 21 and the upper carrier film 50 downstream of the heating furnace 60.
Reference numeral 5 is a winding section for winding the carrier film, and 70 is a cutting device for cutting the formed plate material to a desired length.

Next, the molding operation by the continuous molding line 20 having the above construction will be described. In FIG. 1, the lower carrier film 21 is pulled out from the carrier film roll 22 and travels on a predetermined horizontal path. On the lower carrier film 21, first, the resin 3b in a fluid state is supplied from the resin tank 26, regulated to a predetermined thickness by the doctor knife 27, and applied. Next, on the lower carrier film 21 coated with the resin 3b, the reinforcing fiber mat forming / supplying device 30 supplies the mat-shaped reinforcing fibers 3a, and then the anchor material 2 is superposed on the reinforcing fibers 3a. The short fibers 8 are sprinkled on top. After that, the upper carrier film 50 is overlaid, and the squeeze rollers 56, 5
7, the reinforcing fibers and the resin are pressurized at this time to impregnate and defoam the resin to form the resin-impregnated reinforcing fiber layer 3A. The resin-impregnated reinforcing fiber layer 3A and the anchor material 2
When the laminated body of and passes through the squeeze rollers 56 and 57, the pressed state is released, so that the pressing force of the anchor material 2 against the resin-impregnated reinforcing fiber layer 3A becomes extremely small, but as shown in FIG. 6 (b). In addition, since the fibers 8 are accumulated inside the lower top portion 2a of the anchor material 2, the fibers 8
Has sucked up the resin 3b, so that the top 2a is eventually buried in the resin 3b. Then, the laminated body of the resin-impregnated reinforcing fiber layer 3A and the anchor material 2 passes through the heating furnace 60 to heat and cure the resin, and the base plate 3 made of the fiber reinforced resin and the anchor material 2 bonded to the base plate 3 are made. A plate material is formed. Here, the curing furnace 6
The heating temperature by 0 is preferably higher from the viewpoint of prompt heating and curing of the thermosetting resin 3b, but does not heat or soften the anchor material 2 formed of a thermoplastic material. So that it is set lower. Then, after leaving the curing furnace 60, the upper and lower carrier films 21 and 50 are peeled off, cut into a desired length and discharged. As described above, the concrete anticorrosion plate 1 having a desired length is continuously manufactured. In this method, the concrete anticorrosion plate 1 having a planar shape and an arbitrary length can be manufactured at a low cost by the continuous molding method.

In the continuous molding line 20 shown in FIG. 8, as the continuous anchor material 2, the corrugated top is
Although an anchor material extending in the width direction is used, the present invention is not limited to this configuration, and the anchor material 2 is
It is also possible to use a corrugated top portion that extends in the longitudinal direction of the anchor material. In that case, the anchor material supplied onto the lower carrier film 21 is in a state in which the corrugated tops are arranged in the traveling direction of the lower carrier film 21. In this case as well, the fiber supply device 45 can be used as a means for supplying the fibers 8 to the inside of the lower top part of the anchor material 2, but as described above, the top parts of the anchor material 2 are arranged in the traveling direction. Since it is in the state, long fibers such as roving can be continuously supplied to the inside of the top (the bottom of the corrugation) by using a simple guide roller or the like. Therefore, in this case, it is preferable to continuously feed the long fibers such as roving into the inside of the top of the anchor material 2 in progress, because the device configuration can be simplified. Further, arranging continuous long fibers inside the top of the ongoing anchor material 2 is also effective in preventing the displacement when the anchor material 2 is crushed by the squeeze rollers 56 and 57.

[0025]

As described above, the concrete anticorrosion plate of the present invention comprises an anchor material formed by corrugating a perforated plate material made of a thermoplastic resin, and a base plate joined to one surface thereof. By adopting a structure that has, it is possible to fix the anchor material to the concrete surface in a form that bites into the concrete surely, and the base plate hardly peels off, and the anticorrosion effect of the base plate is maintained for a long time. It has the effect that it can be exhibited stably.

In the first production method of the present invention, mat-shaped reinforcing fibers and a room temperature curable liquid resin are supplied onto a molding surface having a desired shape, and the reinforcing fibers are impregnated and defoamed. Then, an anchor material formed by corrugating a perforated plate material made of a thermoplastic resin on it is pressed so that the top of the corrugated shape located on one surface thereof is embedded in the liquid resin, and in that state With the configuration in which the resin is cured, it is possible to easily manufacture a concrete anticorrosion plate having a structure in which an anchor material is firmly fixed to a base plate made of fiber reinforced resin and having a desired shape such as a planar shape or a curved surface shape. It has the effect of being able to.

Further, the second manufacturing method of the present invention is characterized in that the lower carrier film is running on a predetermined horizontal running path,
A thermosetting resin is applied, mat-shaped reinforcing fibers are laid on top of it, and an anchor material made by molding a perforated plate made of thermoplastic resin into a corrugated shape is laid on top of it. Sprinkle short fibers or powder, then overlay the upper carrier film on the anchor material, and then pass the upper and lower carrier films and the laminate sandwiched between them between a pair of squeeze rollers to impregnate the resin.・ By defoaming and then heating and hardening by passing it through a hardening furnace, concrete with a flat shape and a desired length with a structure in which an anchor material is firmly fixed to a fiber-reinforced resin base plate It has an effect that the anticorrosion plate can be manufactured at low cost by the continuous molding method.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a concrete anticorrosion plate according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an enlarged part of the concrete anticorrosion plate of FIG.

FIG. 3 is a schematic cross-sectional view showing a state in which the concrete anticorrosion plate shown in FIG. 1 is attached to concrete.

FIG. 4 is a schematic plan view showing a mesh body for forming an anchor material.

5 (a), (b) and (c) are schematic side views showing examples of corrugations applied to an anchor material.

FIG. 6 (a) Anchor material 2 on the resin-impregnated reinforcing fiber layer 3A.
(B) Short fiber 8 arranged inside the top of the lower side of the anchor material 2 by bringing the anchor material 2 into contact with the resin-impregnated reinforcing fiber layer 3A.
Schematic cross-sectional view showing the state where resin is sucked up with

7A is a schematic cross-sectional view showing a state where a resin-impregnated reinforcing fiber layer 3A is formed in a mold 11, and FIG. 7B is a schematic cross-sectional view showing a state in which the anchor material 2 is pressed onto the resin-impregnated reinforcing fiber layer 3A and cured. Figure

FIG. 8 is a schematic side view of a continuous production line for continuously forming a concrete anticorrosion plate.

FIG. 9 is a schematic cross-sectional view showing a state in which a concrete anticorrosion plate is set in a formwork.

[Explanation of symbols]

1 Concrete anticorrosion board 2 anchor material 2a top 2A mesh 3 base plate 3A resin impregnated reinforcing fiber layer 3a Reinforcing fiber 3b resin 4 concrete 5 monofilament Type 11 11a molding surface 12 Presser plate 15 Formwork 20 Continuous molding line 21 Lower carrier film 25 Resin supply device 30 Reinforcing fiber mat forming / supplying device 40 Anchor material supply device 45 Fiber feeding device 50 upper carrier film 55 Impregnation / defoaming device 56, 57 Squeeze roller 60 curing furnace 64, 65 Carrier film winding section 70 cutting device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shoji Minota             Nitto Spinning, 1st East, Gonome, Fukushima City, Fukushima Prefecture             Fukushima Factory Co., Ltd. (72) Inventor Yoshiaki Nihei             Nitto Spinning, 1st East, Gonome, Fukushima City, Fukushima Prefecture             Fukushima Factory Co., Ltd. F-term (reference) 4F100 AA18 AK01A AK01B AK04                       AK44 BA02 BA31 DB01A                       DC11A DD12A DE01B DG01                       DG01B DG12B DH02B EA052                       EH462 EJ08B EJ083 EJ193                       EJ82B EJ823 EJ911 EJ913                       EJ963 GB90 JA08 JB02                       JB12B JB16A JB16B

Claims (8)

[Claims] 1. An anchor material formed by molding a perforated plate material made of a thermoplastic resin into a corrugated shape, and a fiber reinforced resin provided by being joined to a corrugated top located on one surface of the anchor material. A concrete anticorrosion board having a base board with layers. 2. The concrete anticorrosion plate according to claim 1, wherein a corrugated top portion located on one surface of the anchor material is embedded in the resin of the base plate. 3. The fiber or powder is placed inside a corrugated top located on one surface of the anchor material to impregnate it with a resin and cure it. Concrete anticorrosion board. 4. A perforated plate material forming the anchor material,
The concrete anticorrosion according to any one of claims 1 to 3, which is a net body in which thermoplastic resin fibers having a diameter of 700 µm or more are arranged so as to cross each other, and the intersections are fused and integrated. Board. 5. The concrete anticorrosion plate according to any one of claims 1 to 4, wherein an average opening area of a large number of holes formed in the anchor material is 2 mm ² or more. 6. The concrete anticorrosion plate according to claim 1, wherein the protrusion height of the anchor material provided on one surface of the base plate is set to 3 to 30 mm. 7. A mat-shaped reinforcing fiber and a room temperature curable liquid resin are supplied onto a molding surface of a desired shape, the reinforcing fiber is impregnated and defoamed, and the resin is made of a thermoplastic resin. An anchor material formed by shaping a perforated plate into a corrugated shape is pressed such that the corrugated top located on one surface thereof is embedded in the liquid resin, and the resin is cured in that state. Manufacturing method of concrete anticorrosion plate. 8. A thermosetting resin is applied onto a lower carrier film which is running along a predetermined horizontal running path, mat-like reinforcing fibers are laid on it, and a thermoplastic resin is further provided on the matting reinforcing fiber. Anchor material formed by forming a perforated plate material into a corrugated shape is stacked, fibers or powder is supplied to the inside of the lower top of the corrugated shape of the anchor material, and then an upper carrier film is stacked on the anchor material. After that, the upper and lower carrier films and the laminate sandwiched between them are passed between a pair of squeeze rollers to impregnate and defoam the resin, and then passed through a curing oven to be heated and cured. A method for manufacturing a concrete anticorrosion plate.