JPH08207030A - Surface mold for molding concrete product and production thereof - Google Patents

Abstract

PURPOSE: To achieve the wt. reduction of a surface mold and to uniformly and certainly pouring a coagulable material into the gap between a receiving part and a matrix when the surface mold is produced. CONSTITUTION: A holding member 20 equipped with a flat receiving part 21 and the circumferential frame 22 provided to the peripheral edge part of the receiving part 21 and a mold member 30 composed of a coagulable material forming a molding surface molding the surface of the concrete product K poured in a flowable state and coagulated on the front side of the receiving part 21 surrounded by the circumferential frame 22 of the holding member 20 are provided and the receiving part 21 of the holding member 20 is formed into a lattice shape and a space 24 in which a coagulable material is poured in a flowable state is formed to the receiving part 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete product molding surface mold for molding a concrete product such as a retaining wall for civil engineering, which molds the surface of the concrete product, and a method for producing the same.

[0002]

2. Description of the Related Art Generally, as a concrete product, there is a so-called L-shaped retaining wall as shown in FIGS. 7 and 8. This concrete product K is formed in a L-shaped cross-section by arranging a surface wall 2 on one side edge of a base wall 1, and, for example, the base wall 1 is grounded, and a large number of concrete products K are connected to each other at their end faces 3. Join and build side by side. Then, for example, the base wall 1 is crocodile, the surface wall 2 is used to block the soil, and a building or the like can be constructed on the embankment. In recent years, the surface 2a of the surface wall 2 of this concrete product K is used in which various patterns other than a flat surface are molded.

Conventionally, as shown in FIG. 8, as the surface mold 4 for molding the pattern of the surface 2a of the concrete product K, for example, a receiving portion 5a made of a flat panel and a peripheral portion of the receiving portion 5a are formed. There is one in which a holding body 5 integrally provided with a peripheral frame 5b provided is provided, and a mold member 6 formed of rubber for molding the surface of a concrete product K is attached to the surface of a receiving portion 5a of the holding body 5. The manufacturing method of the surface mold 4 is as follows.
As shown in FIG. 9, the holding body 5 is arranged on the mold surface 10a of the mother die 10 so that the surface of the receiving portion 5a faces the receiving surface 5a and the mother die 10 through the spout 5c provided in the receiving portion 5a. In the meantime, the rubber as the solidifying material M is melted and poured to be solidified to form the mold member 6 and manufactured.

When the concrete product K is molded by using the surface mold 4, as shown in FIG. 8, in the molding frame 12, the surface mold 4 is mounted on the perforated projection 7 on the upper part of the peripheral frame 5b by a crane or the like. The hook is hooked and lifted, and this is positioned on the front surface of the support plate 13 of the molding frame 12, and the receiving portion 5
The locking projections 14 provided on the back surface of the
To support the surface mold 4 on the support plate 9,
The support plate 9 is moved to make the molding surface 6a of the mold member 6 of the surface mold 4 face the lower mold 16, and the end face mold 17 is rotated to be added to the lower mold 16. In this state, the liquid concrete is applied from above. After pouring, the surface of the base wall 1 is flattened with a trowel or the like, and cured for several hours, and then released to mold the concrete product K. Further, when molding a concrete product K having a different surface pattern, the surface mold 4 is lifted by a crane or the like and removed, and then a new surface mold 4 is lifted by a crane or the like and mounted in the same manner as above, and the surface mold 4 is replaced. I am trying to do it.

[0005]

By the way, in the above-mentioned conventional surface mold 4, since the surface mold 4 is lifted by a crane or the like to be attached to and detached from the support plate 13 of the molding frame 12, the weight is reduced. If it is a product, its handling becomes complicated, and therefore there is a demand to reduce the weight as much as possible. In addition, when manufacturing the surface mold 4, the receiving portion 5 of the holding body 5
The coagulable material M is poured between the receiving portion 5a and the mother die 10 through the pouring port 5c provided in a. However, in the case of the viscous coagulable material M, it is difficult for the coagulable material M to flow well into the mold member. 6
However, there is also a problem that it may be incompletely manufactured.

Therefore, an object of the present invention is to reduce the weight of the surface mold and at the same time to surely pour the solidifying material between the receiving part and the mother mold when manufacturing the surface mold. There is a point to.

[0007]

In order to solve the above problems, the surface mold for concrete product molding of the present invention is provided with a flat receiving portion and a holding frame provided around the peripheral portion of the receiving portion. A body, and a mold member made of a solidifying material that is poured into the front surface of the receiving portion surrounded by the peripheral frame of the holding body in a fluidized state and solidified to form a molding surface for molding the surface of the concrete product. In the concrete product molding surface die, the receiving portion of the holding body is formed in a lattice shape, and the receiving portion is formed with a cavity into which the solidifying material is poured in a fluid state.

Further, according to the method of manufacturing a surface mold for molding a concrete product of the present invention, a holding body having a flat receiving portion and a peripheral frame provided at a peripheral portion of the receiving portion is surrounded by a peripheral frame of the holding body. The front surface of the receiving part facing the mold surface of the master mold, and then pouring a coagulable material in a fluid state between the front surface of the receiver part and the mold surface of the master mold, and then the coagulability In a method for manufacturing a concrete product molding surface mold for forming a mold member having a molding surface for solidifying a material to mold the surface of a concrete product, the receiving portion of the holding body is formed in a lattice shape, and the solidifying material is When pouring in a fluidized state, the solidifying material is poured from the voids of the receiving portion formed in a lattice shape.

[0009]

According to this means, when the surface mold for molding a concrete product is manufactured, the front surface of the receiving portion surrounded by the peripheral frame of the holder faces the mold surface of the mother mold, and then the grid pattern is formed. A mold member having a molding surface for molding the surface of the concrete product by pouring the solidifying material from the formed cavity of the receiving portion and then solidifying the solidifying material is formed. In this case, since the voids of the receiving portion formed in a grid shape are largely opened on the back surface of the receiving portion, the solidifying material is evenly poured into every corner. Further, in the surface mold manufactured in this manner, since the receiving portion of the holding body is formed in a lattice shape, that much,
Since the weight is reduced, the weight is reduced, and the handling can be easily performed when the surface die is assembled or removed, and the work efficiency is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A surface mold for concrete product molding and a method for manufacturing the same according to an embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1, 2 and 7, the surface mold H according to this embodiment has a base wall 1 and a surface wall 2 similar to the above.
It is provided in a molding frame 12 for molding a concrete product K called an L-shaped retaining wall having an end face 3 that is joined to the other, and forms the surface 2a of the surface wall 2 of the concrete product K.

As shown in FIGS. 1 to 5, in the surface mold H according to the embodiment, 20 is a holding member made of metal such as iron, and the peripheral edge portion thereof conforms to the outer shape of the surface 2a of the concrete product K. A rectangular flat receiving portion 21 and the receiving portion 2
The peripheral frame 22 is provided at the peripheral edge portion of the No. 1. The receiving portion 21 of the holding body 20 is formed in a lattice shape by vertically and horizontally joining rod-shaped beam members 23, and a void 24 into which a solidifying material M made of resin concrete described later is poured is formed. Specifically, as shown in FIG. 3, for example, the receiving unit 2
The size of 1 is L1 = 1000 mm in length and L2 = 1700 in width.
For example, three beam members 23 having a maximum width D = 50 mm or less are laid across the peripheral frame 22 at substantially equal intervals in the vertical direction and two at substantially equal intervals in the horizontal direction.

On the back surface of the beam member 23 of the receiving portion 21,
A molding frame 12 for molding the concrete product K is provided with a plurality of hook-shaped locking projections 14 similar to the above for supporting the surface mold H. Further, on the upper part of the peripheral frame 22 of the surface mold H, the perforated projection 7 on which a hook such as a crane is hooked is provided as in the above. Forming frame 12
1, as shown in FIG.
The surface mold H positioned on the front surface of the support plate 13 is supported by locking the locking projections 14 provided on the back surface of the receiving portion 21 in the locking holes 15 of the support plate 13. Board 13
Supported by the surface plate H by moving the support plate 13.
The lower die 16 by facing the lower die 16 and rotating the end face die 17.
In this state, the fluidized concrete poured from above is molded.

Reference numeral 30 denotes a mold member made of a solidifying material M, which is poured into the front side of the receiving portion 21 surrounded by the peripheral frame 22 of the holding body 20 in a fluidized state and solidified to form the surface of the concrete product. To do. This mold member 30 is
As will be described later, the receiving portion 21 facing the mold surface of the mother die 10.
It is attached to the receiving part 21 by melting and pouring the solidifying material M between the mold 10 and the mother mold 10 to solidify. On the surface of the mold member 30, there is formed a molding surface 31 that is molded by the mother mold 10 and has a pattern formed on the surface 2a of the surface wall 2 of the concrete product K.

As the solidifying material M, so-called resin concrete is used in the embodiment. Resin concrete is mixed with inorganic aggregate such as gravel and sand, and liquid resin together with fine powder such as calcium carbonate as a resin extender, and the resin is polymerized using a curing catalyst to form a cured product. What is formed. That is, resin concrete is formed of a composite material of a binder and an aggregate like cement concrete, and among various plastic concretes, only a synthetic resin is used as a binder instead of cement and water. It is a combination of aggregates used. Therefore, unlike other plastic concrete such as polymer cement concrete in which cement contains a polymer such as rubber latex, it does not contain cement. The components are, for example, 5 to 20% by weight of resin as a binder, 60 to 90% by weight of aggregate, and 5 to 2 of other materials.
The ratio is about 0% by weight.

Resins such as polyester, epoxy, furan, phenol, polyurethane and acrylic are used as a binder for resin concrete. Among these, resin concrete using polyester as a binder is commonly called "polycon" and is common as resin concrete. FIG. 6 shows the physical properties of the resin concrete according to these binders. In addition, generally, among the physical properties, the tensile strength and the bending strength are particularly large, and therefore, the durability is excellent even when compared with cement concrete. It also has excellent chemical resistance and great abrasion resistance. Further, it has characteristics such as water impermeability.

As the aggregate, sand, gravel, crushed stone, and other similar materials are used. For example, fine aggregate (aggregate that passes through a 10 mm sieve and 85% or more by weight of a 5 mm sieve) and coarse aggregate. Aggregate (aggregate that remains at 85% or more by weight in a 5 mm sieve) is appropriately mixed and used. Further, it is preferable that the water content in the aggregate is as low as possible and that the content of impurities is small.

In addition, various fine-particle fillers are mixed for the purpose of increasing the amount of the resin and improving the moldability, and at the same time improve the performance such as the improvement of abrasion resistance and the reduction of shrinkage. As the filler, for example, an appropriate material such as an inorganic material such as calcium carbonate or aluminum, or an organic material such as wood powder or fiber is used. Also, refractory agents, antioxidants, ultraviolet absorbers, antistatic agents, lubricants, colorants,
Various additives such as a defoaming agent, a viscosity modifier and a release agent are appropriately added. Further, as shown in FIG. 4, a reinforcing material 11 in which steel materials are assembled in a grid pattern is embedded inside the resin concrete.

Next, a process of manufacturing the surface mold H according to this embodiment will be described. As shown in FIG. 5, a mother die 10 in which a pattern to be attached to the surface 2a of the surface wall 2 of the concrete product K is formed on the die surface 10a in advance is prepared. The periphery of the mother die 10 is formed in a plane so that the tip of the peripheral frame 22 of the holding body 20 abuts without a gap. And FIG.
Further, as shown in FIG. 5, the reinforcing member 11 in which wire rods are assembled in a grid pattern is installed above the mother die 10, and the peripheral frame 22 of the holding body 20 is brought into close contact with the periphery of the mother die 10 so that the receiving portion 21 is formed. The mold surface 10a of the mold 10 is faced.

As the solidifying material M, fluid resin concrete is prepared. In this case, for example, using polyester resin concrete as an example, for example, a mixer in which moisture is not attached to the inner surface of the container is prepared. 8 of the weight of resin concrete mixed in a container
Add 0-60% dry sand. 1 of the weight of resin concrete mixed in another container
0% to 20% of resin is weighed, and BPO (benzoyl peroxide) as a curing agent is added to 1% to resin weight.
Add 3% and stir well. Immediately before use, dimethylaniline for shortening the time for room temperature curing is added in an amount of 0.1% to 0.3% of the resin weight, and well stirred. Immediately add the same amount of calcium carbonate as the resin and stir well. Add the mixed resin into a mixer container and stir well. In this way, fluid resin concrete is prepared.

As shown in FIG. 4, this fluidized resin concrete is poured from the voids 24 of the receiving portion 21 formed in a grid pattern. At this time, it is desirable to apply the vibration to the fluidized resin concrete with a vibrator while spreading it.
As a result, the flowable resin concrete is poured between the receiving portion 21 and the mother die 10. In this case, since it is poured from the empty space 24 of the receiving portion 21, the empty space 24 has a large opening on the back surface of the receiving portion 21, and therefore, compared to pouring from the pouring port as in the conventional case, the flowable resin concrete is used. It is possible to prevent the mold member 30 from being imperfectly manufactured due to the voids being poured evenly. In particular, the fluidized resin concrete has a high viscosity and is inferior in fluidity because it is a concrete containing a large amount of aggregate.
Since it is poured from the void 24 of No. 1, it can be surely spread to every corner of the mother die 10. After that, the surface of the fluidized resin concrete exposed in the void 24 of the receiving portion 21 is flattened with a trowel or the like and cured for several hours, and then released from the mother die 10.
As a result, the surface mold H is manufactured as shown in FIG.

When molding the concrete product K using the surface mold H, as shown in FIGS. 1 and 2, in the molding frame 12, the surface mold H is lifted by a crane or the like to support the molding frame 12. The front surface mold H is supported on the support plate 13 by being positioned on the front surface of the plate 13, and the locking projection 14 provided on the back surface of the receiving portion 21 is locked in the locking hole 15 of the support plate 13. In this case, since the receiving portion 21 of the holding body 20 of the surface mold H is formed in a lattice shape, the weight is lighter and lighter, and accordingly, the handling of the surface mold H is facilitated.
Therefore, the mold assembly work efficiency is improved.

Next, the support plate 13 is moved to make the molding surface of the mold member 30 of the surface mold H face the lower mold 16, and the end face mold 17 is rotated to be attached to the lower mold 16. In this state, Fluid concrete is poured from above, and a vibrator (not shown) in the shape of a rod is inserted into the fluid concrete to give vibration, and bubbles are diverged from the fluid concrete to make the density uniform. In this case, when the coagulable material M is rubber, it is difficult for bubbles to escape because it has an action of absorbing the vibration of the vibrator and canceling the vibration, but in comparison with this, the coagulable material M is resin concrete. Since it is hard, the vibration of the vibrator is well transmitted to the fluidized concrete, so that the bubbles of the fluidized concrete can easily escape, and the density of the concrete product K can be surely made uniform. Then, the surface of the base wall 1 is flattened with a trowel or the like, cured for several hours, and then released to mold the concrete product K. In this way, one surface mold H is used to repeatedly form concrete products having the same shape.

In this case, since the receiving portion 21 is in the form of a lattice, the bonding area of the die member 30 to the receiving portion 21 is smaller than that of the panel. Therefore, when the die member 30 is rubber, the strength is low. Since it does not exist, it often sticks to the concrete product side at the time of mold release and comes off from the holding body 20, but in comparison with this, in the embodiment, the mold member 30 is used.
Since it is made of resin concrete, it has strength. Therefore, it is prevented from sticking to the concrete product side at the time of mold release and coming off from the holding body 20, and the durability is extremely high.

When the mold member 30 is made of rubber, since the rubber has a high water absorbing property, it is blown out by repeated molding, resulting in a short mold life.
Since it is made of resin concrete, its water absorbency is extremely low, so that it does not become fuzzy and unusable for use, and durability is improved also in this respect.

Furthermore, when the mold member 30 is rubber,
Since rubber has a small surface hardness, it is easily worn and the molding surface is easily broken by repeated molding. On the other hand, since the mold member 30 is made of resin concrete, it has high wear resistance. Therefore, it is possible to prevent the molding surface from collapsing, and to improve the durability in this respect as well.

When forming a concrete product K having a different surface pattern, the surface mold H is lifted by a crane or the like to remove it, and then a new surface mold H is lifted by a crane or the like and mounted in the same manner as above. I try to exchange H. Also in this case, the receiving portion 21 of the holding portion of the surface mold H is
Since it is formed in a lattice shape, the weight is lighter and lighter, and the surface mold H can be easily handled accordingly, so that the work efficiency of the surface mold H can be improved.

The components and mixing ratio of the resin concrete are not limited to those described above and may be adjusted in various ways. The solidifying material M is not limited to the resin concrete described above, and any material such as rubber may be used and may be changed appropriately.
Further, in the above embodiments, the present invention has been described as being applied to the surface mold H for molding the surface of the retaining wall as the concrete product K, but the present invention is not necessarily limited to this, and a flat decorative plate. Of course, it may be applied to a surface mold for molding various concrete products.

[0028]

As described above, according to the surface mold for molding a concrete product and the method for manufacturing the same according to the present invention, since the receiving portion of the holding body is formed in a lattice shape, the weight becomes lighter and therefore the weight can be reduced. I was able to plan. Therefore, the surface type can be easily handled and the surface type can be easily attached and detached as much as the weight is reduced.
Work efficiency can be improved.

Further, when the surface mold is manufactured, the solidifying material can be poured from the voids of the receiving portion formed in a grid pattern so that the solidifying material can be poured between the receiving portion and the mother die. Since the receiving part has a large opening on the back surface of the receiving part, it is possible to pour the solidifying material evenly into every corner, as compared with pouring from the spout as in the conventional case. It is possible to prevent the situation where the mold member is incompletely manufactured due to the formation of voids and to greatly improve the quality of the surface mold. In particular, when the solidifying material has high viscosity and poor fluidity, it is extremely effective. Also, since the solidifying material is poured from the void of the receiving portion, the solidifying material can be poured at one time,
Therefore, the workability of manufacturing the surface mold can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a surface mold for concrete product molding according to an embodiment of the present invention together with a molding frame in which the surface mold is used.

FIG. 2 is a perspective view showing a surface mold for concrete product molding according to an embodiment of the present invention together with a molding frame in which the surface mold is used.

FIG. 3 is a back perspective view showing a concrete product molding surface mold according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a state at the time of manufacturing the concrete product molding surface die according to the embodiment.

FIG. 5 is a cross-sectional view showing a method for manufacturing a surface mold for concrete product molding according to an example.

FIG. 6 is a table showing characteristics of resin concrete which is a surface-forming solidifying material for concrete product molding according to an example of the present invention in comparison with cement concrete.

FIG. 7 is a diagram showing an example of construction of a concrete product molded by the surface mold according to the embodiment.

FIG. 8 is a perspective view showing a conventional concrete product molding surface mold together with a molding frame in which it is used.

FIG. 9 is a cross-sectional view showing a conventional method for manufacturing a surface die for molding a concrete product.

[Explanation of symbols]

 K Concrete product H Surface type M Solidifying material 1 Base wall 2 Surface wall 2a Surface 3 End face 4 Surface type 5 Holder 5a Receiving part 5b Surrounding frame 5c Spout 6 Mold member 10 Mother mold 10a Mold surface 12 Molding frame 13 Support plate 14 Locking Protrusions 15 Locking Holes 16 Lower Mold 17 End Face Mold 20 Holder 21 Receiving Part 22 Peripheral Frame 23 Beam Member 24 Void 30 Mold Member 31 Forming Surface

Claims (2)

[Claims] 1. A holding body having a planar receiving portion and a peripheral frame provided on a peripheral portion of the receiving portion, and is poured in a fluid state on a front surface side of the receiving portion surrounded by the peripheral frame of the holding body. In a concrete product molding surface mold including a mold member made of a solidifying material that is solidified to form a molding surface for molding the surface of a concrete product, the receiving part of the holding body is formed in a lattice shape, and the receiving part is formed. A surface mold for molding a concrete product, characterized in that a cavity into which the above-mentioned solidifying material is poured in a fluid state is formed. 2. A front surface of a receiving portion surrounded by a peripheral frame of the holding body of a holding body having a planar receiving portion and a peripheral frame provided on a peripheral portion of the receiving portion is a mold surface of a mother die. A molding surface for facing and then pouring a solidifying material in a fluid state between the front surface of the receiving portion and the mold surface of the mother mold, and then solidifying the solidifying material to mold the surface of the concrete product. In a method for manufacturing a surface mold for molding a concrete product for forming a mold member having, a receiving part of the holding body is formed in a grid shape, and when the solidifying material is poured in a fluid state, the receiving part formed in the grid shape A method for manufacturing a surface mold for molding a concrete product, comprising pouring the solidifying material from the void.