JP2001182191A - Stone block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stone block which brings about high design effect at a low cost, and has high strength. SOLUTION: This stone block 1 is formed of a natural stone, such as granite, diorite, gabbro, andesite, tuff, sandstone, marble, serpentine, and clay stone. The stone block 1 has a plurality of vertically extending through-holes 2 formed therein, and has vertically extending notches 3 formed in both edges thereof. One or both of side surfaces of the stone block 1 are subjected to surface finishing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a stone block.

[0002]

2. Description of the Related Art Conventionally, concrete blocks have been used to construct fences, walls, and the like. The concrete block is formed by kneading water and sand into cement and pouring it into a mold.

[0003]

However, concrete blocks have a monotonous surface pattern.
It has become less popular. In order to apply a pattern to the surface of the concrete block, additional work such as attaching a decorative board to the surface and building materials are required. Therefore, the cost increases. In addition, the concrete block is not necessarily sufficient in terms of strength.

[0004] It is an object of the present invention to provide a stone block having a high design effect at a low cost and a high strength.

[0005]

The stone block according to the present invention is formed of natural stone and has at least one through hole.

[0006] Since the stone block according to the present invention is formed of natural stone, a unique pattern of the natural stone is exposed on the surface. Therefore, a high design effect can be obtained at low cost without requiring additional work and building materials. In addition, the stone block according to the present invention has at least one through hole, so that the weight can be reduced. In addition, when a plurality of stone blocks are stacked and constructed, reinforcement can be performed by inserting a reinforcing material such as a reinforcing bar into the through hole.

Further, since natural stone has higher bending strength and compressive strength than concrete, the stone block according to the present invention has higher strength than concrete block. Moreover, since the stone block according to the present invention is formed of natural stone, it has a high sound insulation effect.

[0008] The natural stone may be processed rock, diorite, gabbro, andesite, tuff, sandstone, marble, serpentine or slate. The patterns of these natural stone materials can be exposed on the surface. Thereby, various design effects can be obtained.

[0009] One or both side surfaces of the stone block according to the present invention may be surface-finished. Also, different surface finishes may be applied to both sides. Therefore, when multiple stone blocks are stacked and constructed,
Different design effects can be obtained for the front surface and the back surface.

[0010]

FIG. 1 is a perspective view of a stone block according to a first embodiment of the present invention.

The stone block of FIG. 1 is formed of natural stone. As the natural stone, granite, diorite, gabbro, andesite, tuff, sandstone, marble, serpentine, slate and the like can be used.

The stone block 1 is provided with a plurality of through holes 2 extending vertically. In this embodiment, the through-hole 2 has a substantially rectangular cross-sectional shape. In addition, cutouts 3 extending in the vertical direction are provided on both end surfaces of the stone block 1. In this embodiment, the notch 3 has a substantially rectangular cross-sectional shape.

One or both sides of the stone block 1 are provided with a surface finish. The surface finish is roughly classified into a rough finish and a polished finish. The types of rough surface finish include cut-off, bushing, small tapping, jet burner finish, jet burner polish finish,
There are ground and split. The types of polished finishes include unpolished, disc, rough polished (roughly polished), water polished (F-finished), and main polished. Such surface finishing is performed by hand processing or machining.

Both sides of the stone block 1 may have the same surface finish or different surface finishes.

FIG. 2 is a plan view showing a method of manufacturing the stone block shown in FIG. First, as shown in FIG. 2A, natural stone is cut into a rectangular parallelepiped stone block 1 and a plurality of cylindrical through holes penetrating from the upper surface to the lower surface of the stone block 1 using a cutting tool having a cylindrical blade. 21 is formed in a substantially rectangular shape.

Thus, as shown in FIG. 2B, a plurality of substantially rectangular through holes 22 and a pair of substantially rectangular through holes 23 are provided. Thereafter, the inner surfaces of the through holes 22 and 23 are cut into a plane shape, and cut from both ends of the through holes 23 on both sides in a direction perpendicular to both end surfaces of the stone block 1.

As a result, a substantially rectangular through hole 2 and a substantially rectangular notch 3 are formed in the stone block 1 as shown in FIG. 2 (c). Finally, the stone block 1 shown in FIG. 1 is formed by subjecting one or both side surfaces of the stone block 1 to the above surface finishing.

FIG. 3 is a perspective view of a stone block according to a second embodiment of the present invention. Stone block 1 shown in FIG.
Is formed of natural stone, similarly to the stone block 1 of FIG. The stone block 1 is provided with a plurality of through holes 2 extending vertically. In this embodiment, the through hole 2 has a circular cross-sectional shape. In addition, cutouts 3 extending in the vertical direction are provided on both end surfaces of the stone block 1. In this embodiment, the notch 3 has a semicircular cross-sectional shape.

When the stone block 1 shown in FIG. 3 is manufactured, a rectangular parallelepiped stone block 1 is hollowed out from the upper surface to the lower surface using a cutting tool having a cylindrical blade so that the through hole 2 is formed. To form The columnar member 5 hollowed out of the stone block 1 can be used for various applications. For example, it can be used for carding.

One or both sides of the stone block 1 in FIG. 3 are provided with a surface finish similarly to the stone block 1 in FIG.

FIG. 4 is a perspective view of a stone block according to a third embodiment of the present invention. Stone block 1 shown in FIG.
Is formed of natural stone, similarly to the stone block 1 of FIG. The stone block 1 is provided with a through hole 2 extending vertically. In this embodiment, the through-hole 2 has a shape in which a plurality of columns are connected in a row. In addition, notches 3 extending in the vertical direction are provided on both end surfaces of the stone block 1. In this embodiment, the notch 3 has a semicircular cross-sectional shape.

At the time of manufacturing the stone block 1 shown in FIG. 4, a rectangular parallelepiped stone block 1 is cut out from the upper surface to the lower surface in a line at a plurality of locations using a cutting tool having a cylindrical blade. Form 2 The columnar member 6 hollowed out of the through hole 2 has a shape in which a part of a column is cut out. This columnar member 6 can also be used for various applications. For example, it can be used for gardening like the columnar member 5 of FIG.

FIG. 5 (a) is a front view showing a first example of a method of constructing a stone block according to the present invention, and FIG. 5 (b) shows a second example of a method of constructing a stone block according to the present invention. It is a front view.

In the example shown in FIG. 5A, a plurality of stone blocks 1 are stacked in a vertical manner. Through-hole 2 at the center of a plurality of blocks 1 stacked vertically
The reinforcing bar 50 is inserted into the inside (see FIG. 1), and mortar is injected into each through hole 2 and each notch 3.

In the example shown in FIG. 5B, a plurality of stone blocks 1 are stacked so as to be staggered in the vertical direction. In this case, the reinforcing bar 50 is inserted into the through hole 2 at the center of the plurality of stone blocks 1 stacked vertically and into the notches 3 at both ends, and mortar is inserted into each through hole 2 and each notch 3. Injected.

In the stone block 1 of the above embodiment,
Since a pattern peculiar to natural stone is exposed on the surface, a high design effect can be obtained by the texture of the natural stone.

Further, one and the other side surfaces of the stone block 1 can have different finished surfaces. for that reason,
When a fence or a wall is constructed with a plurality of stone blocks 1, different design effects are obtained between the road side surface and the house side surface by making the road side surface and the house side surface different finish surfaces. be able to. For example, split finishing is performed on the road side surface of the stone block 1 and busy finishing is performed on the house side surface.

Further, when a wall surface is formed by combining stone blocks 1 having different surface finishes, various design effects can be applied to the entire wall surface. When the wall surface of the house is formed by the stone blocks 1, the atmosphere of each room can be changed by applying different surface finishes to one surface and the other surface.

Further, since natural stone has a high sound insulating effect, when the stone block 1 is used to form a wall in a house, the sound insulating effect between adjacent rooms can be enhanced. Various acoustic effects can also be obtained by applying various surface finishes to the exposed surface of the stone block 1.

Further, the stone block 1 of the above embodiment is
Because it is formed by natural blocks, as described below,
With high strength.

Here, a strength test was performed on the stone blocks of the example and the comparative example. First, as shown in FIG. 6A, as Example 1, three test pieces 100 made of a rectangular plate made of the same natural stone as the stone block 1 according to the present invention were used.
Was made. The width W of the test body 100 is 10 cm, the thickness t is 2 cm, and the length D is 25 cm. A three-point bending test was performed on the specimen 100.

In this three-point bending test, a 10 cm long 2
The round bars 302 were arranged in parallel, the test piece 100 was placed on the round bars 302, and the round bar 303 having a length of 10 cm was placed on the center of the test piece 100. The span L between the lower round bars 302 is 20 cm. In this state, the upper round bar 3
03, a load P was applied, and the breaking load was measured as bending strength. In this case, the upper surface of the test body 100 becomes the pressing surface 101.

As Comparative Example 1, three specimens having the same shape and the same dimensions as those of the specimen 100 of Example 1 were produced from concrete, and subjected to a three-point bending test in the same manner as in Example 1.

Table 1 shows the results of the three-point bending test of Example 1 and Comparative Example 1.

[0035]

[Table 1]

As shown in Table 1, the test piece 10 of Example 1
At 0, it can be seen that the bending strength is almost twice as high as that of the test piece of Comparative Example 1.

Next, as shown in FIG.
As a result, three rectangular parallelepiped test pieces 200 were produced from the same natural stone as the stone block 1 according to the present invention. Specimen 200
Has a width W of 20 mm and a thickness t of 40 mm. A compression test was performed on the test body 200. Specimen 20
The load P was applied with the 20 × 20 mm surface of 0 as the pressing surface 201, and the breaking load was measured as the compressive strength.

As Comparative Example 2, three test pieces having the same shape and the same dimensions as the test piece 200 of Example 2 were prepared, and a compression test was performed in the same manner as in Example 2. Example 2
Table 2 shows the results of the compression test of Comparative Example 2 and Comparative Example 2.

[0039]

[Table 2]

As shown in Table 2, the test piece 20 of Example 2
At 0, it can be seen that the compressive strength of the test specimen of Comparative Example 2 was 2.5 times or more.

Further, as shown in FIG. 7, as Example 3, a stone block 1 according to the present invention was manufactured. The length L of the stone block 1 is 39 cm, the thickness d is 10 cm, and the height h is 19 cm. A three-point bending test was performed on the stone block 1 using a surface of 39 × 19 cm as the pressing surface 103 in the same manner as in Example 1, and the bending fracture load was measured. The span in the three-point bending test was 28 cm.

As Comparative Example 3, a concrete block having the same shape and the same dimensions as in Example 3 was produced, and a three-point bending test was performed in the same manner as in Example 3 to measure a bending fracture load. Table 3 shows the results of the three-point bending test.

[0043]

[Table 3]

As shown in Table 3, it can be seen that the stone block 1 of Example 3 has a bending fracture load more than twice that of the concrete block of Comparative Example 3.

As described above, the stone block 1 according to the present invention
Has higher strength against bending and compression than concrete blocks.

The stone block according to the present invention is not limited to the natural stone described in the above embodiment, but can be formed of various natural stones. Further, the shape of the stone block according to the present invention is not limited to the shape of the above embodiment, but can be formed into various shapes. Furthermore, the method of manufacturing a stone block according to the present invention is not limited to the method described in the above embodiment, but can be manufactured by various manufacturing methods according to the shape and size.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stone block according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a method for manufacturing the stone block of FIG. 1;

FIG. 3 is a perspective view of a stone block according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a stone block according to a third embodiment of the present invention.

FIG. 5 is a front view showing first and second examples of a method for constructing a stone block according to the present invention.

FIG. 6 is a perspective view of a test piece of Example 1 used for a three-point bending test and a test piece of Example 2 used for a compression test.

FIG. 7 is a perspective view of a stone block of Example 3 used in a three-point bending test.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stone block 2 Through hole 3 Notch 5, 6 Columnar member 50 Reinforcing bar

Claims (2)

[Claims] 1. A stone block formed of natural stone and having at least one through hole. 2. The stone block according to claim 1, wherein the natural stone is granite, diorite, gabbro, andesite, tuff, sandstone, marble, serpentine or slate.