JPH0931904A - Block for paving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a peculiar characteristic required as a paving material for a road, by integrally forming water-permeable flat plate layer consisting of inorganic aggregate grains, mica and a binder, on the upper surface of a block body. SOLUTION: A flat plate layer formed by mixing materials consisting of specified compositions and having a specified thickness is integrally formed on the upper surface of a block body 1 with water-permeability. For example, a form is arranged on the upper surface of the block body 1, and the required volume of materials, which are heated at a temperature in a definite range and are mixed, are poured into the form, following which the materials are thermocompression-stuck by a roller and are made into a block member, and the block member is made into a molding by removing the form. At this time, the form is made being inclined inside so that its upper part is made gradually narrow. In this way, the periphery of the flat plate layer 2 is formed in taper-surface shape and chipping owing to collision between the blocks in time of handling them can be prevented from occurring. Furthermore, water is directly led downward through the flat plate layer 2 and the block body 1 by using matter with water-permeability as the block body 1 on which the flat plate layer is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paving block capable of exhibiting excellent optical characteristics and strength characteristics as a water-permeable paving material for roads.

[0002]

2. Description of the Related Art Conventionally, a concrete block having water permeability has been used as a pavement material for roads.
There is a problem in that the surface remains concrete and is achromatic and the appearance is inferior. Therefore, gravel and a binder (generally epoxy resin) are applied to the surface of the concrete block.
It has also been proposed to provide a coloring effect by forming a decorative flat plate layer composed of a mixture of

However, since a paving block provided with such a flat plate layer is colored by a binder, it is difficult to give various color tones, it has no gloss, and the reflection effect is poor. There is also a problem in that sufficient mechanical strength such as bending strength cannot be obtained. Further, there is a problem that it takes a long time to manufacture and the production cost becomes high.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems and can give various color tones, and is excellent in glossiness and is excellent in soft reflection as a whole. Completed for the purpose of providing a paving block capable of exhibiting excellent optical characteristics, sufficient mechanical strength, easy production, and low production cost. Is.

[0005]

The pavement block of the present invention made to solve the above problems has a water-permeable flat plate layer comprising inorganic aggregate particles, mica and a binder on the surface of the block body. It is characterized by being integrally formed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In such a structure, since the flat plate layer contains mica, the entire surface can be colored in various pearl tones due to the reflection effect of the mica. Further, it is possible to exhibit optical characteristics with excellent glossiness, and to secure sufficient mechanical strength by the action of the binder of mica, and to reliably prevent the occurrence of cracks and chips. Further, since the flat plate layer is integrally formed on the surface of the block body, it can be easily and inexpensively produced.

As the inorganic aggregate used in the present invention, gravel, natural stone, ceramic particles, recycled concrete scraps, etc. can be used, and further, glass powder of various colors, recycled glass cullet, etc. can be used. . When glass cullet is used, its particle size is preferably 5 mm or less from the viewpoint of ensuring uniform dispersion. Further, the glass cullet is contained in the flat plate layer in an amount of% by weight.
It is preferable to contain 10 to 80%. Here, if the content is less than 10%, the coloring effect of the glass cullet becomes insufficient and the weather resistance due to the synergistic effect with mica deteriorates, and if the content is more than 80%, sufficient mechanical strength cannot be obtained. Because. In addition, it is preferable to use a frosted glass cullet as the glass cullet because the entanglement with the binder becomes strong and peeling of the cullet is prevented.

The mica has a particle size of 10 to 650 μm,
It is preferable to use a flaky material having a thickness of 10 to 3000 liters from the viewpoint of ensuring lubricity, and the addition amount thereof is 0.05 to 6.0% by weight in the flat plate layer. preferable. If the content is less than 0.05%, it becomes difficult to obtain a sufficient pearl color tone and the strength cannot be improved, and if it is more than 6.0%, the color tone of the block body itself may be erased. . The mica may be coated with titanium oxide and / or iron oxide, or may be coated with titanium oxide and further coated with iron oxide. In this case, titanium oxide It is preferable that the coating rate of the mica coated with is 5 to 70%, and the coating rate of the mica coated with iron oxide is 5 to 80%. Here, the coverage indicates the ratio of the coating film thickness to the weight of mica.For example, in the case of a titanium oxide coating film, when the coverage is small, it exhibits a silver color, and as the weight increases, it becomes a pearl-like green color. It can be changed to control various color tones. The reason why the coverage of these layers is within the above range is to obtain excellent visibility and soft reflection.

As a binder for the above organic resin, an epoxy resin, an acrylic resin, or a resin whose properties conform to the JIS standard of straight asphalt 60-80 or 80-100 (for example, a resin composed of petroleum solvent-extracted oil) Or petroleum-based, coal-based, and / or natural-based resin, thermoplastic rubber and resin composed of naphthenic acid, etc.) 1
One kind or two or more kinds can be used. When the content of such a binder is less than 1.5%, a sufficient binding force cannot be obtained, and bending strength and the like decrease.
If it is more than 5%, the voids will be insufficient and water permeability will be hindered, so 1.5 to 15% by weight in the flat plate layer.
It is preferable to include them. Also, as a binder, the property is straight asphalt 60-80 or 80-100.
When using a resin that conforms to the JIS standard, the curing time is faster than that of epoxy resin and acrylic resin, and the molding time can be greatly shortened, and the price is about 1 /
There is an advantage that it can be produced at a low cost of 5 or less.

As shown in FIG. 1, when a water-permeable block body 1 is used to form the flat plate layer, the water is guided to the lower side through the flat plate layer 2 and the block body 1 as it is. And block body 1
When a water-impermeable material is used as the water, as shown in FIG. 2, the water is guided horizontally through the flat plate layer 2 and discharged to a predetermined position through the joint. Furthermore,
As shown in FIG. 3, the flat plate layer 2 can be integrated with the surface of the block body 1 through the reinforcing mesh body 3. In this case, the block body 1 and the flat plate layer 2 are joined together. It can be held more firmly and the strength can be improved. The mesh 3 should be one that does not impair the water permeability and does not hinder the adhesion between the two, and a mesh made of glass fiber or vinylon fiber, a wire mesh, or the like is used, and is bonded to the mesh 3. The agent may be coated or impregnated.

[0011]

【Example】

[First Example] On the surface of a water-permeable block body of 300 x 300 x 20 mm, a mixture of materials having the compositions shown in Table 1 was integrally formed as a 10 mm thick flat plate layer. As such a molding method, for example, as shown in FIG.
A predetermined amount of the mixed material which is heated and mixed at 5 to 160 ° C. is poured, and then the roller 5 is heated and pressed at 145 to 160 ° C. to form a block body having a predetermined shape, and the mold 4 is removed to form a molded product. At this time, the mold 4 is inclined inward so that the upper part thereof is gradually narrowed, so that the peripheral edge of the flat plate layer 2 becomes a tapered surface to prevent the occurrence of chipping due to the collision of the blocks. It will be possible. Incidentally, as shown in FIG. 5, the peripheral edge of the flat plate layer 2 can also prevent the occurrence of chipping even when the mold 4 is positioned inside the outer peripheral edge of the block body 1 for molding. The obtained paving block is compliant with JIS A5415.
As a result of a bending strength test according to -1977, it was confirmed that the material of the present invention had excellent bending strength characteristics as compared with the comparative example containing no mica. In addition, JISA12
The result of measuring the water permeability according to 18-1961 also confirmed that the water permeability was sufficient. Further, it was confirmed that the pearl color became darker as the mica content increased. In addition, as a result of measuring the slip resistance coefficient (CSR) according to the evaluation standard announced by Tokyo Institute of Technology, all were evaluated as “very safe”. In Table 1, brown glass cullet having a particle size of 1 to 5 mm is used as the glass waste, gravel of 1 to 4 mm is used as the gravel, and scales having a particle size of 20 to 150 μm are used as the mica. Was coated with titanium oxide having a pearly tone and a coverage of 20%, and as a binder, a resin having a property referred to as a decolorizing binder that conformed to the JIS standard of straight asphalt 60-80 was used.

[0012]

[Table 1]

[Second Embodiment] A reinforcing net made of glass fibers is used by using a flat plate layer having the same composition as that of the first embodiment except that a two-component epoxy resin and an acrylic resin are used as a binder. When the paving block formed on the surface of the block body through the body was molded, it was confirmed that the mechanical strength of the obtained block was greatly improved due to the presence of the net body. In the case of an epoxy resin or an acrylic resin, the flat plate layer raw materials can be mixed and pressure-bonded at room temperature.

[Third Embodiment] A pavement block obtained in the same manner as in Embodiment C except that the first embodiment C and the glass cullet whose surface has been processed into a frosted glass are used. When peeling of glass cullet particles was measured by rotating an automobile tire for 0.5 minutes while applying water under a constant load of 0.5 kg / cm ² , it was found that 2 pieces were processed into frosted glass (n = 10), the number in Example C was 9 (n = 10), and it was confirmed that peeling could be effectively prevented by using a glass cullet that was processed into frosted glass.

[Fourth Embodiment] A material prepared by mixing the materials having the compositions shown in Table 2 was integrally formed as a flat plate layer on the block main body in the same manner as in the first embodiment to obtain a pavement. Permeability of block for use in JIS A1218-1961
As a result of the measurement according to, it was confirmed that it has sufficient water permeability. It was also confirmed that the material has sufficient water permeability and at the same time has excellent sound absorption characteristics. In Table 1, brown glass cullet having a particle size of 1 to 5 mm was used as the glass scrap, and gravel A having an average particle size of 3.3 mm and an average particle size of 2. 3 having a predetermined particle size distribution was used as the gravel. Using 2 mm of gravel B and 3.2 mm of average particle size, mica has a scale-like size of 10 to 50 μm with a pearly tone and a coverage of 40% on titanium oxide. Was coated with 10% iron oxide, and the binder used was a resin having a property referred to as a decolorizing binder, which was conformed to the JIS standard of straight asphalt 60-80. In addition, the property is straight asphalt 8
Similar results were obtained with resins adapted to resins conforming to the 0-100 JIS standard.

[0016]

[Table 2]

[0017]

As is apparent from the above description, the present invention can give various color tones by forming a water-permeable flat plate layer comprising inorganic aggregate particles, mica and a binder. It has excellent luster, and can reflect softly as a whole to exhibit excellent optical characteristics, as well as exhibit sufficient mechanical strength, and can be manufactured easily and at low production cost. Is something that can be done. Further, as shown in the embodiment, there is an advantage that recycled products such as glass cullet can be used. Therefore, the present invention is extremely large in that it contributes to the development of industry as a paving block that eliminates the conventional problems.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing another embodiment.

FIG. 3 is a sectional view showing another embodiment.

FIG. 4 is an explanatory view showing a molding process of a paving block according to the present invention.

FIG. 5 is an explanatory view showing another forming process of the paving block according to the present invention.

[Explanation of symbols]

 1 block body 2 flat plate layer 3 mesh

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Naoki Mori 85 Murashiji, Nishiichi-cho, Iwakura-shi, Aichi 402 Seiwa Dormitory 402 (72) Inventor Toshiaki Takemura 200, East Maeno-cho, Konan-shi, Aichi

Claims (9)

[Claims] 1. A paving block characterized in that a water-permeable flat plate layer comprising inorganic aggregate particles, mica and a binder is integrally formed on the surface of the block body. 2. The paving block according to claim 1, wherein the inorganic aggregate particles are one kind or two or more kinds of gravel, natural stone, ceramic particles, recycled concrete waste, and glass cullet. 3. Glass cullet is contained in the flat plate layer in an amount of 1% by weight.
The paving block according to claim 1 or 2, which contains 0 to 80%. 4. The paving block according to claim 1, 2 or 3, wherein the surface of the glass cullet is processed to be frosted glass. 5. Mica is contained in the flat plate layer in an amount of 0.05 to 0.05% by weight.
The paving block according to claim 1, 2 or 3 or 4, which contains 6.0%. 6. The paving block according to claim 1 or 2 or 3 or 4 or 5, wherein the mica is coated with titanium oxide and / or iron oxide. 7. The binder is epoxy resin, acrylic resin,
Or the property is straight asphalt 60-80 J
7. One or two or more kinds of resins adapted to the IS standard, 1 or 2 or 3 or 4 or 5 or 6
The paving block described in. 8. Binder in the flat plate layer in an amount of 1.5 to 1% by weight.
5% content of claim 1 or 2 or 3 or 4
Or the paving block according to 5 or 6 or 7. 9. The paving block according to claim 1, wherein the flat plate layer is formed on the surface of the block main body via a reinforcing net body.