JP2002210716A - Method for manufacturing paving stone block and its block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a natural stone gravel-like pavement by arranging natural stone particles 5 on a surface of a paving stone block, projecting the particles 5, and forming a joint groove between the particles 5. SOLUTION: A method for manufacturing the paving stone block comprises the steps of supporting a form 3, 3' or 3" to a mold plate 2 disposed on a ground surface or a floor surface 1, planely extending and attaching a plastic material onto the upper surface of the plate 2 in this state, directing down a part 5' of the surface of crushed stone particles or boulder particles 5, supporting the stone particles or boulder particles 5 onto the plate 2 in a state in which the lower part of the outside surface 5" of the part 5' is embedded in the material 4, then placing a ready mixed concrete 6 in the form 3, 3' or 3", curing the concrete, then removing the cured concrete from the form to form a block 7, further inverting the block 7, and separating the material 4 from the stone particles or boulder particles 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for paving a natural cobblestone by covering a cement concrete portion with medium-sized crushed or cobblestone particles protruding from the surface of the concrete block.

[0002]

2. Description of the Related Art Conventionally, paving stone paving concrete blocks used are simply square plate-shaped blocks, deformed plate-shaped blocks, mortar pressed brick blocks having a small water / cement ratio, and the like.

[0003] A simple square plate-shaped block is a killer scene, and a deformed plate-shaped block is characterized by joint patterns, but it is difficult to express natural stones on the surface, and at the same time, it is slippery when wet with rain because the surface is smooth. There were defects.

[0004] The mortar compression molded block is rich in water absorption or water permeability and the surface is rough and hard to slip. However, it is difficult to give a natural paving stone pavement scene made of natural stones only to the geometric pattern of joints. Was.

[0005]

SUMMARY OF THE INVENTION According to the present invention, crushed stones or cobble stone ballas are projected in a convex shape by laying out plate-like concrete blocks, thereby enabling natural stone gravel pavement, and furthermore, patterns by color coding of crushed stones or cobble stones. It is an object of the present invention to obtain a flat pavement which can not only be expressed but is hard to slip due to the unevenness between the ballast and the joint.

[0006]

According to the present invention, a mold is supported on a template placed on the ground or floor, and a plastic material is spread on the upper surface of the template in an appropriate thickness. Then, a part of the surface of the crushed stone or cobblestone is turned downward, and the lower part of the outer surface of the part is buried in the plastic material to support the crushed stone or cobblestone on a template, and then a mold is formed. A method of manufacturing a cobblestone block or a cobblestone, characterized in that ready-mixed concrete is poured in, hardened to form a block, and the block is inverted to separate the plastic material from crushed stone or cobblestone. The particles are collectively supported for each of a plurality of colors on a template, and are constituted by paving stone blocks formed by the method according to the first aspect of the present invention, in which a pattern is expressed by boundaries for each color.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A polygonal or circular template 2 is horizontally arranged on a horizontal ground or floor 1 (FIG. 2 (a), FIG. 4).
(B) Figure).

A paper layer 9 made of kraft paper having a larger area than the upper surface is placed on the upper surface of the template 2, and the kraft paper is used by being wet with water or in a dry state.

The template 2 must be square (FIGS. 2 and 3).
An iron plate with a side of 40 cm and a thickness of 4.5 mm is used. The template 2 is surrounded and supported by a steel plate form 3, 3 ′ with an inner size of 40 cm via a paper layer 9, and the round steel springs 10, 10 support the template 2. Keep state. The height from the upper surface of the mold plate 2 to the upper ends of the mold frames 3 and 3 'is 6 cm.

A circular veneer instrument panel (concrete panel) is used for the circular template 2 (FIGS. 4A and 4B), and the circular template 2 is supported by a circular iron plate form 3 "via a paper layer 9. And
The connecting palm mating flanges 11 of the form 3 "are fixed with clips 12. The inside diameter of the form 3" is 45 cm, and the height from the upper surface of the form plate 2 to the upper end of the form 3 "is 6 cm. I do.

The upper surface of the paper layer 9 on the upper surface of the template 2 is shown in FIG.
(A) As shown in the figure, a plasticizer 4 made of a firm glue of wheat flour or starch is spread with a "trowel" to an appropriate thickness (2 to 5 mm), and irregular shaped crushed stones or cobblestones 5 (ballast) ( FIG.
A part 5 ′ (substantially flat part) of the surface of (a) in FIG. 1 is in downward contact with the paper layer 9 via the plastic material 4 and the lower part of the outer surface 5 ″ of the part 5 ′ The crushed or cobblestone grains 5 are supported on the paper layer 9. Of course, the part 5 '(substantially flat portion) of the boulder grains 5 is a flat amorphous spherical surface. A plasticizer 4 made of clay can be used instead of the paste.

In a state where the plasticizer 4 made of the paste or clay is solidified, about 70% of ready-mixed concrete 6 is poured into the formwork 3, 3 'or 3 ", and the reinforcing bar 14 is placed thereon. Then, the ready-mixed concrete 6 is cast on the upper end of the formwork 3, 3 'or 3 ", and the work of the first stage is completed.

The ready-mixed concrete 6 descends into the upper surface of the plasticizer 4 made of the glue or clay between the outer surfaces 5 "of the crushed stones or the cobblestones 5, respectively.
Adhesion hardens to about 0 to 80% and the back of the stone 5 and further solidifies.

As described above, the ready-mixed concrete 6 is lowered into the top surface of the plastic material 4, that is, in contact with the top surface of the plastic material 4 in the gap between the crushed or cobblestone grains 5, 5. Hardens and sufficiently integrates with the crushed or cobblestone grains 5 (the state is shown in FIG. 1A).

After the hardening or solidification of the ready-mixed concrete 6, the molds 3, 3 ′ and 3 ″ are released from the mold, and the hardened concrete is turned over together with the paper layer 9 on the template 2 or the floor surface 1. The paper layer 9 is separated from the crushed stone or cobblestone 5 by water injection in this state, and further injected to inject and soften the jointed plastic material 4 between the crushed stone or cobblestone 5, 5. The steel particles are leached and peeled by rubbing with a steel wire scrubber to form grooves at joints between the stone grains 5 and 5 to obtain a product.

When the crushed or cobble stones 5 are adhered or attached to the paper layer 9, as shown in FIGS. After bonding or attaching together on the paper layer 9, the boundary iron plate 13 is removed, and the stone 5 of another color is sequentially bonded or attached to the next boundary iron plate 13 as described above, whereby Cross pattern by the boundary 8 (Fig. 5 (a)
5), a diagonal pattern (FIG. 5 (b)) and a circular pattern (FIG.
(C) Figure) Other patterns can be expressed.

Instead of the paper layer 9, a transparent synthetic resin film, cloth, or the like can be used. Instead of these layered films or sheets, a release agent such as paraffin is applied to the upper surface of the template 2. The plasticizer 4 in a thin layer (2 to 5
mm thickness).

The colors of the crushed or cobblestone grains 5 are dark blue for serpentine, white for andesite and granite, and brown, brown or reddish for basalt.

[0019]

According to the present invention, since the above-described method is used, a convex portion made of crushed stones or cobble stones and a joint groove-shaped convex portion between the crushed stones or cobble stones are formed on the surface of the cobblestone block, and natural stone ballast is formed. A pavement block can be formed, a natural scenery can be maintained, and there is an effect that a non-slip pavement paving stone block can be obtained.

Further, the crushed stones or cobble stones are exposed to the surface of the paving stone block for each color, and the pavement surface of the geometric pattern can be expressed by the boundary line for each color.

[Brief description of the drawings]

FIG. 1A is an enlarged longitudinal sectional view of a state in which ready-mixed concrete is cast on crushed stones supported on a formwork. (B)
The figure is an enlarged longitudinal sectional view of a state in which the crushed stones and the hardened concrete shown in FIG.
FIG. 3C is an enlarged vertical sectional view of a state in which cobblestone grains are used in place of the crushed stone grains in FIG.

FIG. 2 (a) is a longitudinal sectional view of a state in which ready-mixed concrete is cast by a square iron plate. The figure (b) is a partially enlarged view of the figure (a).

FIG. 3 is a plan view of FIG.

FIG. 4A is a plan view of a circular paving stone block in a first-stage manufacturing state. (B) The figure is a vertical sectional view taken along the line (A) of FIG.

5 (a), (b) and (c) are perspective views showing a paving stone block of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground or floor 2 Form plate 3, 3 ', 3 "formwork 4 Plastic material 5 Crushed stone or cobblestone 5' Part of surface 5" Outer side surface 6 Ready-mixed concrete 7 Block 8 Boundary

Claims (2)

[Claims] 1. A mold frame is supported on a template placed on the ground or floor, and in that state, a plastic material is spread to an appropriate thickness on the upper surface of the template,
A part of the surface of the crushed stone or boulder grain faces downward, and after supporting the crushed stone or boulder grain on a mold plate in a state where the lower part of the outer surface of the part is buried in the plastic material, it is placed in a mold. A method of manufacturing a cobblestone block, comprising: casting and hardening ready-mixed concrete to form a block, and inverting the block to separate the plastic material from crushed stone or cobblestone. 2. A paving stone block formed by the method according to claim 1, wherein the crushed stones or cobble stones are collectively supported for each of a plurality of colors on a template, and a pattern is expressed by a boundary for each color.