JP2008214961A - Concrete building material and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a concrete building material without damaging the decorative properties of the same. <P>SOLUTION: The method is composed of: (a) a step of pouring concrete into a form 10; (b) a step of mounting a rid 11 having vertically extending insertion holes 11d formed therein, on the form; (c) a step of inserting a glass rod 12 having embossing work formed on a side surface thereof along a longitudinal direction, into the respective insertion holes, and inserting the same in the concrete in a fluid state; (d) a step of cutting a concrete hardened molded body 13 to obtain plate-like hardened molded bodies 13b each having an end face of the glass rod 12 exposed to a surface thereof; (e) a step of performing surface treatment of the hardened molded bodies 13b; and (f) a step of cutting a predetermined range from the hardened molded body 13b to obtain the concrete building material 1. According to the method, after pouring the concrete into the form 10, even if the number of the glass rods 12 is increased, formation of cavities in the hardened molded bodies 13 is prevented, and therefore the decorative properties of the obtained concrete building material 1 is not damaged. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a concrete building material excellent in decorativeness.

Various concrete building materials have been proposed in which decoration is given to the surface of the concrete to enhance the decorativeness. For example, there is one disclosed in Patent Document 1.
JP-A-10-292598

  The concrete building material disclosed in Patent Document 1 is a plate-shaped member made of concrete, and is provided by penetrating a light-transmitting material that transmits light in the thickness direction, and from one surface of the plate-shaped member through this light-transmitting material. The decorative property is improved by transmitting light to the other surface.

  In this concrete building material, a plurality of cylindrical light-transmitting materials are arranged in a rectangular parallelepiped mold at intervals, and then the concrete is filled into the mold and solidified. Manufactured by cutting at a predetermined width.

However, in the case of the method for producing a concrete building material disclosed in Patent Document 1, since the concrete is filled after the translucent material is arranged in the mold, if the number of translucent materials increases, the concrete is formed in the mold. You may not get enough.
In this case, voids are generated in the solidified molded product obtained by solidification of the concrete, and unintended holes are formed in the concrete building material obtained by cutting the solidified molded product, which may deteriorate the decorativeness.

  An object of the present invention is to provide a method capable of producing a concrete building material excellent in decorativeness without causing such a problem, and a concrete building material excellent in decorative property.

  The present invention is a method for producing a concrete building material provided with a light-transmitting material penetrating light in the thickness direction, wherein (a) filling concrete into a mold, (b) ) A step of placing the lid body with the insertion hole extending in the vertical direction on the mold; and (c) inserting the rod-shaped light-transmitting material having a polygonal cross section into each of the insertion holes, A step of inserting each of the transmitted light-transmitting materials into the concrete in a fluidized state, and (d) a predetermined exposure of the end surface of the light-transmitting material to the surface by cutting or cutting the solidified molding obtained by solidifying the concrete. And a step of obtaining a concrete building material having a shape.

According to the present invention, since the rod-shaped light-transmitting material is inserted into the concrete after the concrete is filled into the mold, the concrete is filled after the rod-shaped light-transmitting material is disposed in the mold. In contrast, even if the number of light-transmitting materials is increased, there are no voids in the obtained solidified molded product. Therefore, an unintended hole is not formed in the concrete building material, and the decorative property is not deteriorated.
In addition, a lid having a through hole extending in the vertical direction is placed on the formwork, and a rod-like light-transmitting material is inserted into the through hole of the box and then inserted into the fluidized concrete. Therefore, the penetration direction of the translucent material is defined by the insertion hole having a predetermined length in the insertion direction of the translucent material. As a result, the translucent material can be arranged in a desired direction in the concrete.
Further, by cutting or cutting the solidified molding obtained by solidifying the concrete, a solidified molding in which the end surface of the light-transmitting material is exposed on the surface is obtained, so that the concrete building material can be manufactured in large quantities and easily.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
(A) of FIG. 1 is a perspective view of the concrete building material 1 which concerns on a present Example, (b) is sectional drawing which cut | disconnected the concrete building material 1 in the surface A shown by the virtual line in (a). (C) is explanatory drawing explaining the use condition of the concrete building material 1. FIG.
In the concrete building material 1 shown in FIG. 1A, the main body 2 is a plate-like member having a substantially square shape in a top view, and is made of concrete or mortar. In the following description, the term “concrete” means not only concrete but also mortar.
The translucent material 3 is made of a transparent glass material that transmits light. A plurality of light-transmitting materials 3 are provided in the main body 2, and as shown in FIG. 1B, the end surfaces 3 a and 3 b are respectively exposed on the upper surface 2 a and the lower surface 2 b of the main body 2. The main body 2 is disposed through the main body 2.

According to the concrete building material 1 having such a configuration, with reference to FIG. 1B, for example, when light is irradiated from the lower side of the main body 2 toward the lower surface 2b, the irradiated light is exposed at the lower surface 2b. The light is incident from the end surface 3b of the translucent material 3, passes through the translucent material 3, and is emitted from the end surface 3a of the translucent material 3 exposed at the upper surface 2a.
At this time, the light A traveling in the direction orthogonal to the end surface 3b is emitted from the opposite end surface 3a while maintaining the traveling direction, and is incident on the end surface 3b with a predetermined angle. After being reflected by the side surface 3c of the translucent material 3 and changing its traveling direction, it is emitted from the end surface 3a.
Therefore, since the light which goes to a different direction according to the advancing direction of the light which injects into the end surface 3b is radiated | emitted from the end surface 3a, the effect of the visual decoration in the concrete building material 1 improves.

  For example, referring to (c) of FIG. 1, when the concrete building material 1 is used as a wall material and a light source (not shown) is arranged on the back side in the figure, the light incident on the translucent material 3 is Depending on the angle of incidence with respect to the end surface, different positions on the floor surface are reached, and light regions having a shape corresponding to the cross-sectional shape of the translucent material 3 are formed.

The manufacturing method of the concrete building material 1 concerning Example 1 is demonstrated.
FIG. 2 is a flowchart illustrating a method for manufacturing the concrete building material 1 according to the first embodiment. 3 to 5 are explanatory views for explaining each step in the method for manufacturing the concrete building material 1.
Referring to FIG. 2 and FIG. 3 (a), in step 100, a rectangular parallelepiped mold 10 having an opening at the upper end is filled with concrete C containing a predetermined component.
3 (b) and FIG. 3 (c), which is a cross-sectional view taken along plane B of FIG. 3 (b), in step 101, the lid 11 having a plurality of insertion holes 11d formed therein is a mold. The frame 10 is externally fitted to the end 10a on the upper end side.
Referring to FIG. 4A, in step 102, a rod-like light-transmitting material (glass rod) 12 is inserted into the insertion hole 11 d formed in the lid 11 and then abutted on the bottom of the mold 10. Push into flowing concrete.
Here, since the thermal expansion / contraction characteristic of concrete and the thermal expansion / contraction characteristic of glass are close to each other, a glass rod is employed as a rod-like light-transmitting material.

As shown in FIG. 4B, in step 103, the concrete in the mold 10 is cured and solidified, and then the solidified molded product 13 is taken out from the mold 10.
As shown in FIG. 4C and FIG. 5A, in step 104, the surface 13a into which the glass rod 12 of the solidified molded product 13 is inserted is taken as a reference surface and is parallel to the reference surface. A plurality of plate-like solidified molded products 13b are obtained by sequentially cutting the solidified molded products 13 with a predetermined width along the surface using a cutting tool X or the like.

In step 105, the front and back surfaces of the plate-shaped solidified molded product 13b and the end surface of the glass rod 12 exposed on the surface of the plate-shaped solidified molded product 13b are smoothed.
In step 106, a concrete building material 1 shown in FIG. 1 is obtained by cutting out a range of a predetermined size from the plate-like solidified molded product 13b.
In addition, it is preferable to apply a crystal sealer (trade name) over the entire surface of the prepared concrete building material 1 so that the glass rod 12 is not eroded by the concrete component. The crystal sealer uses the strong alkalinity of cement to modify the surface side of the concrete building material 1 to be inorganic, so that the glass rod 12 can be prevented from being eroded by alkali.

The lid 11 will be described.
3B and 3C, the lid 11 has a rectangular parallelepiped shape having a predetermined thickness in the height direction. On the outer peripheral edge of the lid 11, when the lid 11 is placed on the mold frame 10, it is fitted to the end 10 a on the upper end side of the mold frame 10 to hold the lid 11 on the mold frame 10. 11a is formed.
The lid 11 is provided with a plurality of insertion holes 11d that penetrate the upper surface 11b and the lower surface 11c. The insertion hole 11d functions as a guide that defines the insertion direction of the glass rod 12 in the vertical direction when the glass rod 12 is inserted. Therefore, when the glass rod 12 is inserted into the concrete C through the insertion hole 11d, the mold 10 having the length L of the insertion hole 11d is positioned so that the glass rods are parallel to each other in the concrete C. The ratio of the height to the height H is determined. For example, the length of the insertion hole 11d is set to be 20 cm with respect to the height of the mold 10 of 60 cm.
The cross-sectional shape of the insertion hole 11d has a shape that matches the cross-sectional shape of the glass rod 12, and is set slightly larger than the cross-sectional shape of the glass rod 12 so as not to prevent the glass rod 12 from being inserted. In addition, in the top view of the lid | cover 11, each insertion hole 11d is located at random, and the direction of the cross-sectional shape of the insertion hole 11d is also set to be random.

The glass rod 12 will be described. The cross-sectional shape of the glass rod is determined according to the cross-sectional shape of the portion of the translucent material 3 of the concrete building material 1 that is finally generated. Here, a glass rod having a substantially rectangular shape in cross-sectional view is used, and the glass rod is obtained by cutting a glass plate having a predetermined thickness with a predetermined width. In order to prevent the translucent material 3 from falling off from the concrete building material, the glass plate is cut so that the cut surface has an uneven shape, and the unevenness is formed over the longitudinal direction of the side surface of the glass rod. .

  Here, step 100 corresponds to step (a) in the invention, step 101 corresponds to step (b), step 102 corresponds to step (c), and step 103 and step 104 correspond to step (d).

As described above, the present embodiment is a method for manufacturing a plate-shaped concrete building material 1 provided with a plurality of glass 3 that transmit light in the thickness direction, and (a) molds concrete C A step of filling the frame 10, (b) a step of placing the lid 11 having a plurality of insertion holes 11 d having a predetermined length extending in the vertical direction on the mold frame 10, and (c) each of the insertion holes 11 d. After inserting the glass rod 12, the step of inserting each of the glass rods 12 that have passed through the insertion hole 11d into the flowing concrete C until they contact the bottom of the mold 10, and (d) solidifying the concrete C By cutting the solidified molded product 13 obtained in this manner, the process comprises a step of obtaining a concrete building material in which the glass end faces 3a and 3b are exposed on the surface.
Therefore, since the glass rod 12 is inserted into the concrete C after the concrete C is filled in the mold 10, even if the number of the glass rods 12 is increased, voids are generated in the obtained solidified molded product 13. In addition, the resulting concrete building material 1 is not perforated and the decorativeness is not impaired.

Further, since the glass rod 12 is inserted into the concrete C after the insertion hole 11d having a predetermined length extending in the vertical direction is inserted, the insertion direction of the glass rod 12 is defined by the insertion hole 11d. Each of the rods 12 can be arranged in a state of being parallel to each other and aligned in the vertical direction.
Furthermore, by cutting the solidified molding 13 obtained by solidifying the concrete C in a desired direction, a plurality of concrete building materials 1 having a predetermined shape can be obtained. Can do.

Moreover, since glass has higher tensile strength than concrete, when glass is placed in concrete, the weakness of concrete that is strong against compression and weak against tension can be complemented, and a high-strength concrete building material can be obtained.
Furthermore, since the unevenness is formed on the side surface of the glass in contact with the concrete to improve the bonding strength between the glass and the concrete, the glass does not fall off the concrete building material even when an impact is applied to the concrete building material.
In addition, the thermal expansion and contraction characteristics of glass are similar to those of concrete. For example, when acrylic resin different from the thermal expansion and contraction characteristics of concrete is used, cracks occur in the concrete due to the difference in thermal expansion and contraction characteristics. There is no.

  Further, the concrete building material cuts the solidified molded product 13 along a plane orthogonal to the insertion direction of the glass rod 12, in other words, a plane parallel to the surface 13a of the solidified molded product 13 into which the glass rod 12 is inserted. Since the end surfaces of the glass rods 12 are respectively exposed on the front and back surfaces of the plate-shaped concrete building material, the solid molded product 13 is only cut along a predetermined direction. Thus, a plate-shaped concrete building material in which the end face of the glass rod is exposed on the surface can be manufactured in large quantities and easily.

Further, since the rod-shaped light-transmitting material is a glass rod 12 having a rectangular cross section obtained by cutting a glass plate having a predetermined thickness in the width direction, a commercially available glass plate having a predetermined thickness is desired. A rod-like light-transmitting material can be obtained simply by cutting with a width of. Moreover, since the glass rod of the piece produced at the time of manufacture of a glass plate can also be utilized, a glass rod can be obtained cheaply.
In particular, the glass plate is cut so that the cut surface has an uneven shape, and the glass rod is formed with unevenness along the longitudinal direction of the side surface of the glass rod. Dropout can be prevented.
In addition, since the unevenness extends to the optical path through which the light of the light-transmitting material passes, the light passing through the light-transmitting material is more irregularly reflected by the unevenness, resulting in more effective decoration of light emitted from the concrete building material. Can be improved.

In the concrete building material 1 having the above-described configuration, as shown in FIG. 1C, the light emitted from one side of the plate-like main body 2 passes through the glass (translucent material 3) and passes through the glass. The other side is irradiated. Therefore, the concrete building material 1 concerning this invention can also be used as a nameplate as shown to (a) of FIG. 6, or a signboard, for example.
Moreover, as shown in (b) of FIG. 6, the concrete building material 1 can be applied to the taxiway G installed on the road surface.
Generally, in the case of a taxiway using light, a light source, for example, a light source using an optical fiber, is installed in a pit provided in the road surface, and a transparent tempered glass is installed thereon, and light is emitted on the road surface. I am doing so. In this case, since the bottom of the pit can be visually observed through the glass, the pedestrian psychologically walks away from the tempered glass, and the taxiway may prevent the pedestrian from passing.
However, when the concrete building material 1 is used instead of tempered glass, it also serves as a guideway while hiding the bottom of the pit, so that the above-described problems do not occur.

  Furthermore, the concrete building material 1 can also be used as a fall prevention fence installed in an outer corridor of an apartment house, a veranda of a house, or the like. For example, referring to (a) of FIG. 7, when used as a fence F in the outer corridor of an apartment house, light from the light source L installed on the upper part of the door D of the residential entrance radiates from the translucent material 3. Therefore, when the person S is hidden behind the fence F, the amount of light emitted from each translucent material 3 changes. Therefore, even from the outside of the building, it is possible to notice the presence of the person S hiding behind the fence F due to the change in light intensity.

  Furthermore, referring to FIG. 7B, the concrete building material 1 may be installed on the ceiling surface R of the building so that light of a desired color is radiated indoors from the ceiling R side. In such a case, the light-transmitting material is colored so that a desired color is emitted, or a light source such as an RGB LED is installed in the ceiling, and light of the desired color is output from the light source. The light may be emitted into the room through a light-transmitting material. For example, green light is emitted from the concrete building material located on the right side of the dotted line D in the figure, and blue light is emitted from the concrete building material located on the left side so that a different color is emitted from the ceiling surface for each sales floor in the store. By being irradiated, the position of the sales floor can be visually communicated to the customer by color while improving the decoration in the store.

In the said Example, although the case of the plate-shaped concrete building material which has a rectangular shape in the top view was mentioned as an example, it is good also as a plate-shaped concrete building material which has a circular shape in the top view.
For example, as shown in FIG. 8, when the concrete building material 1 is arranged on the upper surface of the cylinder 20 in which the light source is arranged, and the concrete building material 1 is rotated along the circumferential direction indicated by the figure column arrow, Since the direction of the light radiated | emitted from each translucent material 3 of the concrete building material 1 always changes with rotation of the concrete building material 1, it can be set as the concrete building material excellent in the decorating property. In this case, the concrete building material 1 can be used as a pedestal for display on which the ornament is displayed by providing the stage 21 on which the ornament or the like is placed on the upper surface of the concrete building material 1.
In addition, you may make it rotate the light source itself arrange | positioned in the cylinder 20, for example, the light source itself using an optical fiber, without rotating concrete building material 1 itself.

In the above embodiment, the case where the concrete building material is plate-shaped has been described as an example, but the light incident from one side of the concrete building material is emitted from the other side through the translucent material. As long as it is made, the shape of the concrete building material is not particularly limited, and may be a polygonal column shape, for example, a columnar concrete building material.
FIG. 9A is a perspective view of a concrete building material 50 according to a first modification, and FIG. 9B is a cross-sectional view of the concrete building material 50 cut along a plane C in FIG.
In the concrete building material 50 shown in FIG. 9A, reference numeral 51 denotes a main body, and reference numeral 52 denotes a translucent material.
In this concrete building material 50, each translucent material 52 is positioned so as to penetrate the main body 51 in the thickness direction from the lower side surface to the upper side surface of the main body portion 51 in the figure. In the outer peripheral surface of 51, the end surfaces 52a and 52b of each translucent material 52 are exposed.
Here, each translucent material 52 penetrates the main body 51 in a positional relationship parallel to each other without being in contact with each other, and the end surfaces 52a and 52b exposed on the outer peripheral surface of the main body 51 are connected to the outer peripheral surface. It is formed so as to be substantially flush.

A method for manufacturing the concrete building material 50 will be described.
In addition, since the manufacturing method of the concrete building material 50 differs only from the manufacturing method of the above-mentioned concrete building material 1 only in the cutting method of the solidified molding 13 taken out from the formwork 10, here, processing after the cutting of the solidified molding 13 Only will be described.

Referring to (a) of FIG. 10, in the solidified molded product 13 taken out from the mold 10, the end on the side where the glass rod 12 is inserted is cut, as shown in (b) of FIG. 10. The solid-shaped molded product 13 has a rectangular parallelepiped shape. Then, the surface 13c of the solidified molded product 13 where the end face of the glass rod 12 is exposed is used as a reference surface, and a predetermined range of the surface 13d orthogonal to the reference surface is used to determine the thickness of the solidified molded product 13 using a grinder G or the like. A plurality of columnar solidified molded products 13e as shown in FIG. 10C are obtained by cutting out perpendicularly to the direction.
Subsequently, after the outer peripheral surface is smoothed by polishing the outer peripheral surface of the columnar solidified molded product 13e, the columnar solidified molded product 13e is cut to a predetermined length in the longitudinal direction to obtain a cylindrical shape. The concrete building material 50 is obtained.

According to the concrete building material 50 having such a configuration, with reference to FIG. 9B, for example, when light is irradiated from below in the figure toward the main body 51, the irradiated light is irradiated in the main body 51. The light enters from the end surface 52b of the glass rod 52 exposed to the direction side, passes through the glass rod 52, and is emitted from the opposite end surface 52a. Therefore, the light radiated from the end face 52a of the glass rod 52 has the same visual effect as that of the concrete building material 1 described above.
Such a concrete building material 50 can be used not only as an interior material in a building but also as a lane separator as shown in FIG. 11, for example.

  Further, as yet another modification of the concrete building material according to the embodiment, as shown in FIG. 12, concrete having a shape formed by cutting a solid-solidified molded product 13 having a rectangular parallelepiped shape along a dotted line shown in the figure. It is good also as building materials 1, 1 '. Since the concrete building material having such a shape emits light from the light source L from the translucent material exposed on the surface, it can be used, for example, as a vehicle stop that can be seen at night.

In the above-described embodiment, the surface of the concrete building material is polished, and the case where the end surface exposed to the surface of the concrete building material of the glass rod, which is a permeable material, is finished in a mirror shape is described as an example. The process of polishing the surface of the concrete building material may be omitted.
In this case, the end face of the glass exposed on the surface of the concrete building material has irregularities such as fine rough patterns resulting from the cutting of the solidified molded product. As a result, the traveling direction of the light radiated from the end face is moderately disturbed by the unevenness, and light giving a soft impression is radiated from the concrete building material 1, so that the concrete that gives a further decorative effect Can be a building material.
In particular, in concrete building materials, when fine irregularities are formed on the end face of the glass located on the side from which light is emitted, for example, in the case of the concrete building material 1 used for the above-described guideway G, it is located below the concrete building material 1. The light source can be concealed and a guide path that emits light that gives a soft impression can be provided.

In the above-described embodiments, the case where the cross-sectional shape of the glass rod that is a light-transmitting material is a rectangular shape has been described as an example, but a glass rod having a desired polygonal cross-section such as a circle or a triangle is used. May be. In this case, since light of a desired shape is emitted from the concrete building material, the concrete building material can be provided with a more decorative effect.
In addition, these desired cross-sectional polygonal shapes can be formed by, for example, cutting a rectangular glass rod by sandblasting. In this case, since the unevenness is formed along the longitudinal direction on the side surface of the glass rod, it is possible to prevent the glass rod from dropping from the main body portion of the concrete building material due to the unevenness.

Moreover, in the above-described embodiment, the case where the unevenness is formed along the longitudinal direction of the side surface of the glass rod has been described as an example. For example, in the side surface of a cylindrical or polygonal columnar glass rod, the longitudinal direction thereof It is good also as a glass rod which provided the unevenness | corrugation in the spiral shape toward.
In such a case, even if a force directed in the penetration direction of the translucent material acts on the generated translucent material (glass) of the concrete building material, the spiral irregularities provided around the glass rod are not penetrated by the translucent material. Because it resists the force in the direction, it can prevent the translucent material from falling off the concrete building material.

In the above-described embodiments, the case where a transparent glass rod is used has been described as an example, but at least the side surface of the glass rod may be colored with a desired color. In such a case, light of a desired hue is emitted from the translucent material exposed on the surface of the concrete building material, so that the concrete building material can be provided with a more decorative effect.
Furthermore, you may create a concrete building material using the glass rod which apply | coated silver to at least one part of the side surface. In such a case, since the light is reflected by the silver coating film and the luminance of the light irradiated from the translucent material exposed on the surface of the concrete building material is improved, a further visual decoration effect can be provided.

  Furthermore, in the above-described embodiment, by cutting the solidified molded product of concrete, a plate shape in which the end surface of the glass rod is exposed on the surface or a polygonal column-shaped concrete building material was created. For example, a concrete solidified molded product May be obtained by sandblasting to obtain a concrete building material having a desired shape. In such a case, a three-dimensional concrete building material having a curved surface or streamline shape on the surface can be obtained by sandblasting, so that the decorative property of the concrete building material is further improved.

It is a perspective view of the decorative building material which concerns on an Example. It is a flowchart of the manufacturing method of the decorative building material which concerns on an Example. It is explanatory drawing explaining the manufacturing method of the decorative building material which concerns on an Example. It is explanatory drawing explaining the manufacturing method of the decorative building material which concerns on an Example. It is explanatory drawing explaining the specific example of the decorative building material which concerns on an Example. It is explanatory drawing explaining the specific example of the decorative building material which concerns on an Example. It is explanatory drawing explaining the specific example of the decorative building material which concerns on an Example. It is explanatory drawing explaining the specific example of the decorative building material which concerns on an Example. It is explanatory drawing explaining the modification of a decorative building material. It is explanatory drawing explaining the manufacturing method of the decorative building material which concerns on a modification. It is explanatory drawing explaining the specific example of the decorative building material which concerns on a modification. It is explanatory drawing explaining the manufacturing method of the decorative building material which concerns on a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 50 Concrete building materials 2, 51 Main-body part 3 Translucent material 10 Formwork 11 Lid (lid body)
11b Edge 11e Insertion hole 12 Glass rod 13 Solidified molding 13b Solidified molding

Claims (12)

A method for producing a concrete building material provided with a light-transmitting material that transmits light in a thickness direction,
(A) filling concrete into the mold,
(B) a step of placing the lid on which the insertion hole extending in the vertical direction is formed on the mold;
(C) After inserting the rod-shaped light-transmitting material having a polygonal cross section into each of the insertion holes, inserting each of the light-transmitting materials that have passed through the insertion holes into the fluidized concrete;
(D) A method comprising a step of obtaining a concrete building material having a predetermined shape in which an end face of the light-transmitting material is exposed on the surface by cutting or cutting a solidified molding obtained by solidifying concrete. After the step (d),
The method according to claim 1, further comprising the step of polishing the surface of the concrete building material. The concrete building material is a plate-shaped concrete building material obtained by cutting the solidified molded product along a surface perpendicular to the insertion direction of the translucent material, and on the front and back surfaces of the plate-shaped concrete building material, The method according to claim 1, wherein an end face of the light-transmitting material is exposed. The concrete building material is a polygonal column-shaped concrete building material obtained by cutting the solidified molded product in a direction orthogonal to the insertion direction of the translucent material, and on the outer peripheral surface of the polygonal column-shaped concrete building material, The method according to claim 1, wherein an end face of the light transmissive material is exposed. The rod-like light-transmitting material is a glass rod having a rectangular cross section obtained by cutting a glass plate having a predetermined thickness in the width direction. The method according to item. The rod-shaped translucent material is a glass rod having a desired polygonal cross section obtained by sandblasting a glass rod obtained by cutting a glass plate having a predetermined thickness in the width direction. The method according to any one of claims 1 to 4. The method according to claim 1, wherein a colorant is applied to the rod-like light-transmitting material. The method according to any one of claims 1 to 6, wherein silver is applied to the rod-like light-transmitting material. The method according to any one of claims 1 to 8, wherein unevenness is formed on a side surface of the rod-shaped translucent material.   A light-transmitting material material that transmits light is provided in a state of penetrating in the thickness direction, and is a concrete building material having a predetermined shape in which an end surface of the light-transmitting material is exposed on the surface, and the concrete is filled in a mold. A concrete building material obtained by cutting or cutting a solidified molded product obtained by vertically inserting a rod-shaped light-transmitting material having a polygonal cross section into fluidized concrete and solidifying the concrete. The concrete building material is a plate-shaped concrete building material obtained by cutting the solidified molded product along a surface perpendicular to the insertion direction of the translucent material, and on the front and back surfaces of the plate-shaped concrete building material, The concrete building material according to claim 10, wherein an end face of the light transmissive material is exposed. The concrete building material is a polygonal column-shaped concrete building material obtained by cutting the solidified molded product in a direction orthogonal to the insertion direction of the translucent material, and on the outer peripheral surface of the polygonal column-shaped concrete building material, The concrete building material according to claim 10, wherein an end face of the translucent material is exposed.

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