JP3636712B1 - Artificial stone and its manufacturing method - Google Patents

Abstract

The surface of an artificial stone material is made to be hard to slip, to be difficult to get dirty, and to be glossy.
At least a surface layer is an artificial stone material including a hardened binder and a granular seed stone, and a part of the seed stone is formed on the surface of the surface layer by polishing the surface of the surface layer. A smooth concavo-convex surface protruding from is formed.
[Selection] Figure 1

Description

  The present invention relates to an artificial stone material suitable for a passage surface through which pedestrians pass in the civil engineering and construction fields, and a method for manufacturing the same.

  Artificial stone materials such as terrazzo tiles are manufactured by molding using crushed stones such as marble as seed stones and colored cement or resin as a binder. Conventionally, a rough surface after molding as shown in FIG. 3 (a) is polished by a polishing machine as shown in FIG. 3 (b) and finished to a smooth and glossy surface.

  However, when such artificial stone is used on the passage surface where pedestrians pass, its surface is smooth and glossy, so it is slippery when it is wet with water or when it is dusty or dusty. There was a problem in ensuring the safety of pedestrians.

Therefore, for the purpose of making it difficult to slip, a method of making irregularities on the surface of the artificial stone material has been adopted. For example, as shown in FIG.3 (c), the shot blasting which makes a glossy surface rough by spraying iron powder at a high pressure and makes it difficult to slip is performed. Further, a sidewalk terrazzo has been proposed in which a plurality of groove-shaped depressions are formed in a predetermined arrangement on the surface of an artificial stone material using a formwork provided with protrusions in a predetermined arrangement (see, for example, Patent Document 1). .
Japanese Patent Laid-Open No. 5-125704

  However, while the above-mentioned conventional artificial stone is effective against slipping, dirt such as discharged gum is likely to adhere, dust and the like are easily collected, and cleaning thereof is not easy. Moreover, the glossy surface which is the original characteristic of the artificial stone material cannot be obtained. Therefore, it is in a situation where the beautification of the passage does not progress.

  An object of the present invention is to make the surface of the artificial stone material difficult to slip, to be resistant to dirt, and to be glossy.

In order to solve the above-described problems, the invention described in claim 1 has a structure in which at least the surface layer (surface layer 2) is relatively in comparison with the granular seed stone 4 and the seed stone 4 as shown in FIG. An artificial stone material (terrazotile 1) comprising a soft and hardened binder (cured cement 5), and the surface of the surface layer is polished by an elastic polishing machine so that the surface of the surface layer is A smooth and glossy uneven surface 2a from which a part of the seed stone 4 protrudes is formed.

In the invention according to claim 2, for example, as shown in FIG. 2, at least the surface layer is mixed with a granular seed stone 4 and a relatively soft binder when cured compared to the seed stone 4. After curing and molding, the surface of the surface layer is polished with an elastic polishing machine to form a smooth and glossy uneven surface 2a with a portion of the seed stone 4 protruding from the surface of the surface layer. It is characterized by.

Thus, the hardened binder is relatively soft to the seed stone by polishing the surface of the surface layer comprising the hardened binder and the granular seed stone with an elastic polishing machine. As a result, a part of the seed stone protrudes from the surface of the surface layer, and the surface of the surface layer is formed into a smooth uneven surface. And by forming an uneven surface, it is possible to obtain the slip resistance of the surface of the artificial stone material, and by making the surface smooth, it becomes difficult to get dirt. Further, since the surface is polished, the surface of the artificial stone has a gloss.

  Here, examples of the binder include cement-based materials such as white cement and ordinary cement, and resin-based materials such as acrylic resin, methacrylic resin, and unsaturated polyester resin. However, the present invention is not limited to these, and any material may be used as long as it mixes with the seed stone and hardens integrally, is relatively soft after the hardening, and is suitable as a material for the artificial stone material.

Moreover, as a seed stone, the marble and granite conventionally used are mentioned, for example. In addition, high hardness such as glass, carbon, garnet, silica sand, etc. can be mentioned, and by mixing these high hardness seed stones, it will not be polished when polished by the polishing means described later, so that the surface is uneven. Will be formed. There may be one kind of seed stone or a mixture of several kinds. By devising the size of the seed stone, it is possible to obtain a surface shape having a large or small surface roughness, that is, a surface shape having a high sliding resistance value or a relatively low surface shape.
In addition, because of the high hardness of the seed stone, the irregularities formed on the surface are formed by the high hardness seed stone. Therefore, the passage has a large traffic volume compared to artificial stone with a shot blast finish. Even when it is laid, etc., it is possible to maintain a non-slip performance for a long time with relatively little deterioration over time due to wear.

These grinding machines, in the course of forming the surface layer of the surface gradually smooth uneven surface, in which can be polished along the uneven surface.

  The object to be polished includes an artificial stone material having a conventional surface finish. It also includes artificial stone that has already been laid. For example, this includes the case where the surface of an artificial stone material already laid at a concourse of a station is polished on site. Conventional surface finishes include rough finishes and polished finishes. Examples of the rough surface finish include tapping finish and shot blast finish, and examples of the polish finish include rough polishing, water polishing, and main polishing.

According to the present invention, at least the surface layer is an artificial stone material comprising a granular seed stone and a hardened binder relatively soft compared to the seed stone, and the surface of the surface layer is elastic. By polishing with a polishing machine , a smooth uneven surface with some seed stones protruding is formed on the surface of the surface layer, so that an artificial stone material having a glossy surface that is not slippery and stain resistant is obtained. be able to.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
This embodiment is applied to the terrazzo tile 1 which is an artificial stone material often used as a floor finishing material such as a station concourse. FIG. 1 is a cross-sectional view of terrazzo tile 1 (artificial stone), and FIG. 2 is an enlarged cross-sectional view of an enlarged surface layer thereof. The terrazo tile 1 is composed of two layers, a front surface layer 2 (surface layer) and a back surface layer 3.

  The surface layer 2 is formed with a thickness of 10 to 15 mm, and includes a seed stone 4, a hardened cement 5 (a binder), and a mixture of pigments and the like. The back layer 3 is formed with a thickness of 20 to 25 mm, and is composed of aggregate and hardened cement (not shown).

  As the seed stone 4, natural stone such as marble is used, and as the cement, white cement is used for the surface layer 2 and ordinary cement is used for the back layer 3.

  The surface of the surface layer 2 of the terrazzo tile 1 is polished by an elastic polishing machine 6, for example, a brush, sponge, rubber or wire brush containing an abrasive. By polishing with such a polishing machine having elasticity and polishing power, more hardened cement 5 that is relatively softer than the seed stone 4 is polished, and a part of the seed stone 4 is a surface layer. 2 is projected on the surface. Further, since the surface is polished along the uneven surface, the surface of the protruding seed stone 4 and the hardened cement 5 is finished to be a smooth uneven surface. Thus, since it is finished to the smooth uneven surface 2a, the surface is resistant to dirt and the surface is glossy while ensuring slip resistance.

Next, a method for manufacturing the terrazo tile 1 according to the present embodiment will be described.
First, as shown in FIG. 2 (a), a kneaded mixture of seed stone 4, white cement and water, and an admixture added as necessary is added to the inside of a mold made up of a side frame 7 and a bottom base 8. Type in. Then, an appropriate vibration is applied to the mold with an unillustrated vibrator, and the cement of the surface layer 2 is leveled.

  Next, as shown in FIG. 2 (b), an admixture added as necessary to a mixture of aggregate, cement and water is added and kneaded onto the cement of the surface layer 2 in the mold. Type in.

  Next, the cement of the surface layer 2 and the back surface layer 3 is compressed by a press machine (not shown). After removing from the mold and performing steam curing and watering curing, natural curing is performed.

  As shown in FIG. 3 (a), the surface of the surface layer 2 of the terrazzo tile 1 molded into a plate shape through the above manufacturing process has rough irregularities formed, and most of the seed stone 4 is hardened. It is buried inside. The surface of the surface layer 2 in this state is polished with an elastic polishing machine 6, for example, a brush, sponge, rubber, or wire brush containing an abrasive. In this manner, a product of the terrazo tile 1 in which the smooth uneven surface 2a is formed on the surface of the surface layer 2 is completed.

In the above embodiment, the terrazzo tile is targeted. However, the present invention is not limited to this and may be a terrazo block or other artificial stone.
Also, the shape, dimensions, etc. of the terrazzo tile are arbitrary, and it is needless to say that the specific details such as the materials used and the like can be changed as appropriate.
It can also be applied to artificial stone materials that have already been surface-finished, such as water polished and shot blasted. In addition, it can be applied to floors made of artificial stone that have already been laid on concourses at stations, etc., by applying on-site, as a method of applying a glossy surface shape that is not slippery and dirty. is there.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the terrazzo tile of one Embodiment to which this invention is applied, (a) is the sectional drawing, (b) is the expanded sectional view of the surface layer part. It is a figure for demonstrating the manufacturing process of the terrazzo tile of one embodiment to which this invention is applied, (a) implantation | striking of a surface layer, (b) implantation | striking of a back surface layer, (c) polishing by a grinder. It is a figure explaining. It is the expanded sectional view explaining the surface layer part of the conventional terrazzo tile, (a) is the state which has not surface-finished, (b) is the state which carried out the water polishing finish, (c) is the state which carried out shot blasting Is shown.

Explanation of symbols

1 Terrazzo tile (artificial stone)
2 Surface layer 2a Smooth uneven surface 3 Back layer 4 Seed stone 5 Hardened cement (hardened binder)
6 Polishing machine with elasticity

Claims (2)

At least the surface layer is an artificial stone material comprising a granular seed stone and a hardened binder relatively soft compared to the seed stone ,
An artificial stone material, wherein the surface of the surface layer is polished by an elastic polishing machine to form a smooth, glossy uneven surface with a portion of the seed stone protruding on the surface of the surface layer. At least the surface layer is mixed with a granular seed stone and a relatively soft binder when cured compared to this seed stone , cured and molded, and then the surface of the surface layer is polished with an elastic polishing machine A method for producing an artificial stone material, characterized by forming a smooth, glossy uneven surface having a portion of a seed stone protruding on the surface of the surface layer by polishing.

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