JP3071214U - Concrete block - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To propose a concrete block that can be used as a brick block, a seawall block, or a retaining wall block. SOLUTION: In a concrete block mainly used as a civil engineering material or the like, the block 5 includes:
The surface layer 2 is composed of a polymer cement composition obtained by mixing hydraulic cement, fine particles of a natural silicate mineral, fine glass particles, and an aqueous synthetic resin emulsion. .

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a concrete block that can be used as a machin block, a seawall block, or a retaining wall block.

[0002]

[Prior art]

 Conventionally, concrete blocks used for slopes, walls, etc. are decorated with patterns or fixed with stones, etc., but this type of surface finish requires a decorative surface. Various materials are used just to get them out. In addition, there are many cases where the discharge of waste material is inevitable during finishing. On the other hand, while there is a demand for recycling of waste materials, there is a current situation in which recycling of waste materials for this type of civil engineering materials has not progressed.

[0003]

[Problems to be solved by the invention]

 Therefore, the purpose of the present invention is to reuse glass waste, which is waste, for this kind of civil engineering material, and to provide a block in which glass waste does not fall off.

[0004]

[Means for solving the problem]

 The present invention has been proposed in view of the above, and in a concrete block mainly used as a civil engineering material or the like, the block includes a surface layer portion and a base portion, and the surface layer portion has a hydraulic property. The present invention relates to a concrete block comprising a polymer cement composition obtained by mixing cement, fine particles of a natural silicate mineral, fine glass particles, and an aqueous synthetic resin emulsion.

[0005]

[Action]

 The concrete block of the present invention having the above-mentioned structure effectively reuses glass waste and contributes to the reuse of waste. In addition, since the surface layer using glass dust has extremely high strength, it can be used on a slope, a wall surface, etc. without occurrence of a phenomenon such as falling off of glass dust during use over time.

[0006]

[Embodiment of the invention]

As described above, the concrete block according to the present invention includes the surface layer and the base, and the surface layer includes the following materials. The tourmaline [NaFe ₃ Al ₆ B ₃ Si ₆ (OH) ₃₀ ] and the garnet [Fe ₃ Al ₂ (SiO ₄ ) ₃ ], which are natural silicate minerals used in the present invention, are each bipolar crystals. Therefore, the crushed fine particles have independent bipolar crystals, and when they come into contact with water, they electrolyze water due to the electrical properties of natural silicate minerals, and water is converted to hydrogen ions (H ⁺ ). It is decomposed into ^- hydroxyl ion (OH). At this time, the positive ions (H ⁺ ) are released as hydrogen gas (H ₂ ) because of their high ion mobility, but the hydroxyl ions (OH ⁻ ) are combined with the surrounding water molecules (H ₂ O). It has been found that [H ₂ O + OH ⁻ = (H ₃ O ₂ ) ⁻ ], which changes to a surfactant called hydroxyl ion (H ₃ O ₂ ) ⁻ , generates a surfactant effect. In the present invention, utilizing this property, fine particles and fine glass particles of natural silicate mineral pulverized as a reinforcing aggregate are added to hydraulic cement and mixed with an aqueous synthetic resin emulsion. The surfactant effect is promoted. As a result, the affinity between the hydraulic cement and the aqueous synthetic resin in the emulsion increases, and a copolymer in which the cement crystalline composition and the aqueous synthetic resin are tightly entangled with each other is exhibited, exhibiting high bending characteristics and compression characteristics. In addition, it was found that the surface active effect was further promoted when the particle size of the fine particles of the natural silicate mineral was 50 μm or less. In addition, the aqueous synthetic resin emulsion forms a resin film between the cement crystalline composition and the fine glass particles due to the surfactant effect of water. As a result, the fine glass particles do not come into direct contact with the cement crystalline composition, which prevents the reaction between the cement and the glass. Even when a large amount of fine glass particles are added, the solidified material (surface layer) has extremely high strength. Part) was obtained. It has been conventionally known that mixing fine glass particles into hydraulic cement reduces the strength of the solidified product.However, the synergistic effect of the fine particles of ground natural silicate mineral and the aqueous synthetic resin emulsion is synergistic. It was found that due to the effect, even when a large amount of fine glass particles were used, a high-strength solidified body (surface layer) was obtained.

The hydraulic cement used in the present invention may be any of ordinary portland cement, early-strength cement, white cement, and alumina cement. In embodiments described later, white cement was used.

[0008] A rotary beating pulverizer was used for pulverizing natural silicate minerals and pulverizing glass waste. The particle size of the fine particles of the pulverized natural silicate mineral is not particularly limited, and may be about 5 to 250 μm, but is preferably 50 μm or less in order to obtain a high surface active effect. The particle size of the fine glass particles may be about 150 μm to 10 mm.

As the color pigment, any of an inorganic pigment and an organic colorant may be used. For example, there are various types of fine glass particles used, such as green (transparent) and brown (transparent), so that the color pigment may be selected so as to match those colors.

The aqueous synthetic resin emulsion of the present invention includes a vinyl acetate emulsion, a vinyl acetate / acryl copolymer resin emulsion, a vinyl acetate / ethylene copolymer resin emulsion, an acrylic copolymer resin emulsion, and an acrylic / styrene emulsion. Copolymer resin emulsion, vinyl acetate / ethylene / vinyl chloride copolymer resin emulsion, etc. may be used, but a mixture of acrylic / styrene copolymer resin emulsion and vinyl acetate / ethylene / vinyl chloride copolymer resin emulsion is used. It is desirable to use an aqueous synthetic resin emulsion. The mixed aqueous synthetic resin emulsion includes an acrylic / styrene copolymer resin emulsion (nonvolatile content of 50% or less is omitted) and a vinyl acetate / ethylene / vinyl chloride copolymer resin emulsion (nonvolatile content of 50% or less is omitted). It is desirable to use a resin emulsion having a concentration of 20 to 50% by weight (nonvolatile content: 10 to 25%). The mixing ratio of the mixed aqueous synthetic resin emulsion is 100 to 90 parts by weight of an acrylic / styrene copolymer resin emulsion and 90 to 10 parts by weight of a vinyl acetate / ethylene / vinyl chloride copolymer resin emulsion. It was adjusted to be parts by weight. More preferably, it is 40 to 60 parts by weight of an acrylic / styrene copolymer resin emulsion and 40 to 60 parts by weight of a vinyl acetate / ethylene / vinyl chloride copolymer resin emulsion.

The natural silicate mineral refers to tourmaline, garnet, hillite, zeolite, and other natural rocks. Among the natural silicate minerals, tourmaline and garnet have independent polar crystals even when they are made into fine particles, and it is known that the electrical characteristics are remarkable. In the example, two types of fine powder, tourmaline and garnet, were used.

[0012] As described above, the concrete block of the present invention comprises a surface layer made of the polymer cement composition composed of the above-mentioned materials and a base, and the base may be made of ordinary concrete. Alternatively, it may be composed of the same polymer cement composition as the surface layer portion, and is not limited at all. In addition, the concrete block of the present invention can be used as a seawall block and a retaining wall block as well as a bay block as shown in an example to be described later, and each can be appropriately molded and manufactured by a known method. Can be.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1A, a pallet 1 is filled with a polymer cement composition shown below to form a surface layer 2. In advance, as a polymer cement composition, 10 to 90 parts by weight of fine particles of ground natural silicate minerals, 20 to 180 parts by weight of fine glass particles, and 10 to 90 parts by weight of white cement, (mixed) aqueous synthesis 4 to 36 parts by weight of a resin emulsion (nonvolatile content) was blended. Therefore, the ratio of the fine glass particles in the formed surface layer portion 2 is 8.5 to 88% by weight. Further, as shown in FIG. 1 (b), ordinary concrete is poured into the formwork 3 to form the base portion 4. Then, as shown in FIG. 1 (c), the pallet 1 was turned over, placed on a mold 3, pressed into contact, cured, and then released from the mold 3 and the pallet 1.

The concrete block 5 of FIG. 2 obtained in this manner is a concrete block of the type in which the surface layer portion 2 made of the polymer cement composition is integrated on the base portion 4, and is stacked as shown in FIG. As a result, slopes and wall surfaces could be constructed. In the figure, black circles indicated by 21 are fine glass powder particles having a relatively large diameter, a part of which is exposed on the surface of the surface layer portion 2 and is excellent in irregular reflection when exposed to sunlight or the like. It was an aesthetic.

The present invention has been described based on the embodiment of the drawings. However, the present invention is not limited to the above embodiment, and is not limited to the configuration described in the claims for utility model registration. But it can be implemented.

[0016]

[Effect of the invention]

 As described above, the concrete block of the present invention effectively reuses glass waste and can use a large amount of glass as much as about 10 to 90%. It contributes to the reuse of waste compared to other materials. Also, in the concrete block of the present invention, since glass dust is partially exposed on the surface of the surface layer, irradiation of sunlight etc. will be irregularly reflected when slopes, walls, etc. are constructed using such blocks. And presents an excellent aesthetic. In addition, the hardened surface is polished to improve its design, and the swarf and glass swarf generated by the swarf can be used again for the production of new concrete blocks. It does not.

[Brief description of the drawings]

FIG. 1 shows a process of manufacturing a concrete block according to the present invention.
It is sectional drawing which shows a joining process typically.

2A is a cross-sectional view showing one embodiment of the concrete block of the present invention, and FIG. 2B is a side view.

FIG. 3 is a plan view showing a wall surface constructed using the concrete block of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet 2 Surface part 21 Fine glass powder particles with relatively large diameter 3 Formwork 4 Base part 5 Concrete block

Claims (1)

[Utility model registration claims] 1. A concrete block mainly used as a civil engineering material or the like, wherein the block is composed of a surface layer and a base, and the surface layer is formed of a hydraulic cement or a fine silicate mineral. A concrete block comprising a polymer cement composition in which powder, fine glass powder, and an aqueous synthetic resin emulsion are mixed.