JP2007154529A - Compound paving stone and its laying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide compound paving stone capable of simply and firmly making compound of natural stone and a concrete block, efficiently carrying out joint formation in the case the paving stone is constructed and having good workability. <P>SOLUTION: In the compound paving stone of the natural stone and the concrete block, the natural stone is placed on the upper part thereof, and in the compound paving stone fixing the concrete block to the lower part thereof, the circumferential side of the natural stone is formed in a fracture-shape having unevenness and, at the same time, two sides at least opposed to each other are combined with an interlocking body forming an inclined plane spreading over the bottom is integrally provided to the lower surface of the natural stone, and it is so characterized that it is formed by burying the interlocking body in the concrete block. The circumferential side of the natural stone is slightly projected from the circumferential side of the concrete block, and one or more joint keeps may be projected to the side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a composite paving stone composed of a natural stone and an artificial stone such as a concrete block, which are laid for paving a road such as a sidewalk or a roadway, or a ground such as a park or a plaza, and a laying method thereof.

  Conventionally, natural stone has long been used for pavements such as sidewalks and roadways in order to exhibit excellent natural beauty. For example, cubic crushed stones (generally called “Pinkoro”) are arranged in a fan shape, or a method of laying irregular polygonal stones like a patch pad or a method of laying square stones regularly or irregularly is well known. It has been. These constructions require skill and considerable effort to set the paving stones, set the level, and form joint intervals, etc., so that even a person with considerable experience has little laying area per hour. In particular, random pavement is difficult and efficient construction is desired.

  In addition, when laying natural stones, especially when laying by the dry method, thickness is usually necessary for stability, so the amount of stone used increases, but in Japan there are problems with natural resources and the environment. Therefore, composite paving stones combined with artificial stones have been proposed in order to save the amount of natural stones whose supply is restricted.

For example, as shown in FIG. 10, a natural stone 2 made into a thin plate and a concrete block 3 are combined and fixed with a mortar or an adhesive 11 to form a composite paving stone.
By combining natural stone with concrete blocks in this way, thin plate-like natural stones are reinforced and have strength suitable for paving, and are more resistant to wear than concrete blocks, and have a natural surface unique to natural stones. It is formed. However, when natural stone and concrete block are combined in a flat plate like this, there is a problem that the natural stone may slide on the concrete block due to easy separation of the bonded part while it is used for paving stone etc. is there.

In order to solve such a problem, Patent Document 1 discloses that when the laying surface is made of natural stone and the back surface is combined with a concrete block, the natural stone and the concrete block are embedded in the natural stone and the concrete block, respectively. There has been disclosed a composite paving stone that is provided with a locking member having a protrusion to be bonded and firmly joins the both.
Utility Model Registration No. 3003679

However, in the above-mentioned products, it takes time to manufacture the locking member having the protrusion, and a large number of locking members must be installed at the boundary between the natural stone and the concrete block. Take it.
The present invention improves the above-mentioned conventional problems, can make the composite of natural stone and concrete block simpler and stronger, and can efficiently form joints when laying paving stones. It aims to provide a good composite paving stone.

In order to achieve the above object, the gist of the present invention is as follows.
(1) In a composite paving stone in which a natural stone is arranged in the upper part and a concrete block is fixed in the lower part, the peripheral side surface of the natural stone is formed into a fractured surface shape having irregularities, and at least two opposite surfaces of the lower surface of the natural stone A composite paving stone, wherein a locking body that forms an inclined surface whose side faces expand toward the bottom surface is provided integrally, and the locking body is embedded in a concrete block.
(2) The composite paving stone according to (1), wherein the peripheral side surface slightly protrudes from the peripheral side surface of the concrete block.
(3) The composite paving stone as described in (1) above, wherein one or a plurality of joint keeps project from each of at least two side surfaces of the concrete block of paving stone.
(4) In the composite paving stones of different sizes used for laying, using a plurality of composite paving stones, the long side of any composite paving stone is the same as the short sides of other composite paving stones, the linear length as shown in FIG. A method for laying a composite paving stone, comprising forming a paving stone pattern having short joints and laying the composite paving stone by sequentially combining the patterns.

As described above, according to the present invention, a natural stone that becomes a surface portion of a paving stone is integrally formed with a locking body that is formed into a special shape, and this is embedded in a concrete block that is bonded to the back side, thereby strengthening the natural stone and the concrete block. It also has a feature in that the peripheral side surface of natural stone is formed into an uneven fracture surface, and the joint spacing is narrow and random to eliminate pinching of the heel of the shoe.
Furthermore, by combining paving stones of different sizes, for example, as shown in FIG. 8, the surroundings are patterned with irregularities, and by sequentially laying them in combination, the construction can be made very easy and the joint has a long straight line. There is also an advantage that a more natural texture is produced.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is a perspective view of a rectangular parallelepiped composite paving stone 1 according to the present invention, in which a relatively thin plate-like natural stone 2 serving as an upper surface layer and a concrete block 3 are integrally formed thereunder. . 4 is a joint keep projecting about 5 mm in width and about 2 mm in thickness on the side wall of the paving stone in order to keep the joint spacing formed between adjacent paving stones when the paving stone 1 is laid. The joint keep 4 may be fixed or detachably provided on at least the side surfaces adjacent to the paving stone 2, and the number of the keeps 4 may be provided on each side surface depending on the size of the paving stone.
The fixing means of the joint keep 4 is provided integrally with the paving concrete block, or a method of fitting by attaching a hole in the side wall, or the joint keep such as adhering should maintain the joint spacing and be detached during use. Either method is acceptable.

  The natural stone of the paving stone of the present invention has a fractured surface 5a having an uneven surface 4a and 5b having the same thickness as that of the natural stone 2 (FIG. 1). In the embodiment, as shown in FIG. 2, the natural stone paving stone 2 is composed of an upper layer 5b and a lower layer 5c, and the peripheral side surface 5b 'of the upper layer 5b is slightly outside the peripheral side surface 5c' of the lower layer 5c, for example, about 1 mm. As shown in FIG. 6, it is possible to reduce the distance between the joints 8 on the laying surface, and the upper peripheral side surface 5b 'has an uneven fracture surface. Prevent heels from getting caught.

  In order to make the peripheral side surface have a rough surface, as shown in FIG. 3, when the paving stone is cut out from the natural stone base 1 a, the peripheral side surface 5 a is cut while leaving the thickness of the peripheral side surface 5 a. It is possible to obtain a peripheral side surface having a fractured surface 5a which is fractured by applying an impact to the part 5a by using the breaking device 6 to form an uneven surface.

  In the present invention, as shown in FIG. 4 (cross-sectional view taken along line AA in FIG. 1), a locking body 7 that is integrated with the natural stone 2 is formed on the back side of the surface natural stone 2. As shown in FIG. 5A (cross-sectional view taken along line BB in FIG. 1), the locking body 7 is an inclined surface in which the side surface 7a extends toward the bottom surface 7b, that is, an enlarged view of FIG. 5B. In this way, by forming a notch with the bottom of the paving stone so that the angle θ is an acute angle (preferably 50 to 70 °), the locking body 7 having such a shape is embedded in the concrete block 3. Concrete enters the incision formed by the inclined surface 7a of the locking body and exhibits a wedge effect, so that the natural stone and the concrete block can be firmly fixed.

  The locking body 7 that protrudes integrally with the back surface of the natural stone may be formed in a partial region including the center of the back surface of the natural stone, or a plurality of the locking bodies 7 may be provided partially on the back surface. The protruding height of the locking body may be approximately equal to or slightly lower than the thickness of the natural stone 2. The inclined surfaces of the side surfaces need not be formed on all the side surfaces of the locking body, and may be formed on at least the opposing surfaces in the longitudinal direction of the paving stones.

  In order to manufacture the paving stone of the present invention, as shown in FIG. 7, the natural stone 2 having a fractured surface with irregularities on the peripheral side of the upper layer is arranged so that the back surface is on the lower side of the natural stone. A mold 10 capable of expressing joint keeping and a necessary external shape is placed, and cement is put into the mold 10, and in particular, the inclined side surface 7 a portion of the locking body 7 is well filled with cement and the locking body. If the mold is removed after the natural stone and the concrete block are sufficiently adhered after being cast for a sufficient period of time in the cement so that the natural stone and the concrete block adhere sufficiently, the joint keep 4 and the like are integrally formed with high bonding strength A composite paving stone is made. The angle θ of the inclined side surface is preferably about 50 to 70 ° as described above in consideration of the filling property of the cement (although it varies depending on the cement viscosity) and the processing of the locking body.

  In order to lay the composite paving stone of the present invention, the composite paving stones mesh with each other at the joint keep 4 to form one surface, and the joint spacing can be set to a predetermined interval, and is particularly narrow. The joint spacing can be set, and it can be laid out in an orderly manner by simply arranging them, making it extremely easy to construct.

FIG. 8 and FIG. 9 show an example of a special laying method. For example, a plurality of synthetic paving stones (a, b, c... N) having different sizes are prepared, and the long side of the paving stone c is a short length of the paving stone b. The long side of the paving stone b has the same dimensions as the short side of the paving stone a, and using these, a pattern with an unevenness is created as shown in FIG. 8, and the patterns with the unevenness are combined with each other. As shown in FIG. 9, a surface is formed. By making the pattern shape uneven or irregular, it is possible to prevent the joint from becoming a straight line.
Conventionally, it can be easily realized by using the pattern of the present invention. That is, in the pattern shown in the figure, paving stones having different dimensions are combined to form the laying pattern 9, and if this pattern 9 is sequentially combined and laid, it can be easily paved on a plaza such as a sidewalk or a park. In FIG. 9, the boundary portion is indicated by a bold line in order to make it easier to determine the boundary (joint portion) of the laid pattern.

  The pattern 9 is formed by integrating concrete by placing the concrete on the back surface of the paving stones arranged in advance in the manner described above, and piling is realized by combining and laying the integrated pattern as shown in FIG. It is also possible. Therefore, construction work can be simplified by using the integrated pattern 9, and design aesthetics can be expressed by selecting an arrangement of paving stones. However, the present invention is not limited to such patterned laying, and can also be achieved, for example, by laying in a pattern shape by combining individual paving stones on the laying surface.

  In addition, the present invention has a fractured surface with irregularities on the peripheral side surface 5 of the pavement upper layer portion, so that the interval between the joint portions can be formed randomly and the width can be narrowed to prevent the heel of the shoe from falling. Can do.

  The paving stone laying method of the present invention may be either a wet method or a dry method that has been conventionally used, but a stable pavement surface can be obtained even in the dry method. In addition, the paving stone of the present invention can show the natural feeling of natural stone with synthetic stone even if it is synthesized, and since it is firmly joined to the concrete block, it does not cause lateral flow of the surface layer due to peeling etc. Can be used safely for a long time.

The perspective view which shows an example of this invention synthetic paving stone. The perspective view which shows the other example of this invention synthetic paving stone Explanatory drawing which shows a part of manufacture of this invention. The figure which shows the AA line cross section of FIG. (A) is the BB sectional view of FIG. 1, (b) is the partially expanded explanatory view. Explanatory drawing which shows an example of this invention joint part. Explanatory drawing which shows a part of manufacturing assumption in this invention. The top view which shows an example of the laying pattern of this invention paving stone. The top view which shows an example of the pavement laid using the laying pattern of this invention paving stone. The perspective view of the conventional composite paving stone (part).

Explanation of symbols

1: Composite paving stone 1a: Base stone 2: Natural stone 3: Concrete block 4: Joint keeping 5: Peripheral side surface 5a: Broken surface 5b: Upper layer 5b ': Peripheral side surface 5c: Lower layer 5c': Peripheral side surface 6: Breaking equipment 7: Locking body 7a: Side surface of locking body 7b: Bottom surface 8: Joint 9: Laying pattern 10: Formwork 11: Adhesive

Claims (4)

In a composite paving stone with a natural stone at the top and a concrete block fixed at the bottom, the peripheral side of the natural stone has a fractured surface with irregularities, and at least the opposite side faces the bottom of the natural stone toward the bottom A composite paving stone, characterized in that a locking body forming an expanding inclined surface is integrally provided and embedded in a concrete block. The composite paving stone according to claim 1, wherein the peripheral side surface of the natural stone slightly protrudes from the peripheral side surface of the concrete block. 2. The composite paving stone according to claim 1, wherein one or a plurality of joint keeps project from each of at least two side surfaces of the concrete block of the paving stone. In the composite paving stone according to claim 1, which has different sizes, a long side of an arbitrary composite paving stone is the same as a short side of another composite paving stone. A method for laying a composite paving stone, comprising forming a paving stone pattern having short joints and laying the composite paving stone by sequentially combining the patterns.

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