JP2003011266A - Laminated plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give functional properties such as sound-insulating and vibration- damping properties, radiation shielding properties, electromagnetic wave shielding properties, magnetic permeability, abrasion resistance or slip resistance to a base such as a metal plate, mortar, a wood plate or a ceramic plate. SOLUTION: A mortar cured layer M1 ' being a cured material of the mixture of a granular material of an electric furnace oxidized slag and a hydraulic inorganic powder is formed on the base S. Therefore the present laminated plate 12 of which the base S is given the functional properties such as the slip resistance, the sound-insulating and vibration-damping properties, the radiation shielding properties, the electromagnetic wave shielding properties, the magnetic permeability or the abrasion resistance, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated plate having high strength, sound insulation and vibration damping properties, radiation shielding properties, electromagnetic wave shielding properties, magnetic permeability, wear resistance and slip resistance.

[0002]

The object of the present invention is to provide a metal plate, a mortar layer, and other functional materials such as sound insulation and vibration damping, radiation shielding, electromagnetic wave shielding, magnetic permeability, abrasion resistance and slip resistance.
It is applied to a base material such as a wood board and a ceramic board.

[0003]

As means for solving the above-mentioned conventional problems, a mortar cured layer, which is a cured product of a mixture of electric furnace oxidation slag granules and hydraulic inorganic powder, is formed on a substrate. A laminated plate is provided. Usually, the substrate is a metal plate, a mortar hardened layer without addition of electric furnace oxidation slag,
It is selected from the group consisting of wood board and ceramic board. The mixture contains 15 to 60 parts by weight of hydraulic inorganic powder and 100 to 100 parts by weight of electric furnace oxidized slag granules, and a water reducing agent of 0.01 to
It is desirable that 3.0 parts by weight is mixed, and further, in the mixture, 15 to 60 parts by weight of the hydraulic inorganic powder, 100 parts by weight of the electric furnace oxidation slag granules, high specific gravity metal powder and / or high specific gravity metal powder are used. It is desirable that 20 to 50 parts by weight of the specific gravity metal oxide powder and 0.01 to 0.2 parts by weight of the water reducing agent and / or the thickening agent are mixed. Usually, the cured product layer is obtained by adding and kneading 5 to 25 parts by weight of water to 100 parts by weight of the above mixture, and curing and curing the kneaded product. It is desirable that it is filled in and cured by curing.

[0004]

When water is added to the mixture of the present invention and the mixture is kneaded to cure and harden the kneaded product, the electric furnace oxidation slag particles containing CaO or SiO ₂ in the powder composition are hydraulic inorganic powders. Involved in hardening by the hydration reaction, and the electric furnace oxidation slag granules are substantially spherical hollow bodies, and since there are many fine irregularities on the surface, they have an anchor effect on the matrix of the cured molded body. The strength and wear resistance of the mortar hardened layer obtained as a result are improved.

Further, as described above, since the electric furnace oxidation slag granules are substantially spherical hollow bodies, when kneaded with water even when a large amount is added to the composition, the kneaded mixture shows good fluidity and moldability. Is not hindered, and therefore it is not necessary to add excess water to the composition.

The electric furnace oxidation slag granules have a specific gravity of 3.3.
Since it is as high as ~ 4.1, it gives a large weight to the molded product. Moreover, since the electric furnace oxidation slag granules are spherical and have many fine irregularities on the surface, when a sound wave is incident on the mortar hardening layer, the sound waves are diffusely reflected on the fine irregularity surface of the electric furnace oxidation slag granules. As a result, sound waves are attenuated in the molded product, and the electric furnace oxidation slag particles have a sound absorbing effect because they are hollow bodies as described above. As a result, the mortar hardened layer has good sound insulation and damping properties without increasing the thickness.

Further, since the electric furnace oxidation slag granules contain a large amount of ferrite minerals, the mortar hardened layer has both electromagnetic wave shielding properties and magnetic permeability, and imparts multi-functionality to the substrate.

The electric furnace oxidized slag granules have hitherto been used only for civil engineering such as ground leveling materials, and can be provided at low cost, and the present invention makes effective use of such electric furnace oxidized slag granules. Will be possible.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below. [Hydraulic inorganic powder] As the hydraulic inorganic powder used in the present invention, Portland cement, alumina cement,
Cement such as blast furnace cement or blast furnace quenched slag fine powder, electric furnace quenched reduction slag fine powder, silica sand, silica stone fume, blast furnace slag fine powder in the cement,
Examples include mixed powders to which a silicic acid-containing substance such as fly ash, shirasu balloon, perlite, bentonite, and diatomaceous earth is added.

[Electric Furnace Oxidizing Slag Granules] The electric furnace oxidizing slag referred to in the present invention is usually 10 to 26% by weight of CaO and S.
i O ₂ 8~22 weight%, Mn O4~7 weight%, Mg O2
~ 8 wt%, Fe O 13-32 wt%, Fe ₂ O ₃ 9-4
5% by weight, Al ₂ O ₃ 4-16% by weight, Cr ₂ O ₃ 1-4% by weight, and as a minor component, TiO ₂ 0.25-25%.
0.70 wt%, P ₂ O ₅ 0.15 to 0.50 wt%,
S about 0.005 to 0.085% by weight and about 20 to 45% by weight of Fe for obtaining a stable mineral composition, and does not contain clay, organic impurities and salt contained in natural aggregate components at all. Free of unstable free lime, free magnesia or minerals.

In order to produce granules by granulating the electric furnace oxidation slag, the melt of the electric furnace oxidation slag is poured into a high-speed rotating bladed drum, and the melt is crushed into particles by the bladed drum. A method of quenching the melted and granulated melt in a water mist atmosphere is adopted. A plurality of bladed drums may be arranged to carry out crushing granulation in a plurality of stages. The granules of the electric furnace oxidation slag thus obtained usually have a particle size of 5 mm or less, and those having a particle size of 2.5 mm or less are substantially spherical and have a specific gravity in the range of 3.3 to 4.1. However, the surface does not have defects such as cracks, has fine irregularities, and is composed of or includes a hollow structure.

[Water-reducing agent] Examples of the water-reducing agent used in the present invention include AE water-reducing agents and high-performance water-reducing agents.

[High Specific Gravity Metal Powder] The high specific gravity powder used in the present invention is powder of iron, nickel, cobalt, chromium, molybdenum, copper, lead, zinc, for example, alloy such as stainless steel, and has a specific gravity of 7g / cm ³ or more, particle size is 50
It is desirable that the thickness is less than μm.

[High Specific Gravity Metal Oxide] The high specific gravity metal oxide used in the present invention includes the above-mentioned high specific gravity metal oxides. Further, as the high-specific-gravity oxide powder that can be used in the present invention, there is scale powder generated when the steel material is melt-cut. Such scale powder is a substantially spherical hollow body and is ferrite, and can add the same function as that of the electric furnace oxidation slag granules.

[Thickener] In the present invention, a thickener may be used to adjust the viscosity when the powder composition is kneaded with water. For example, when the kneaded product has a breathing rate of more than 3% in a breathing test, a thickener is used to make it less than 3%. Examples of the thickener include glue, gelatin, casein, starch, modified starch, oxidized starch, dextrin, gum arabic, sodium alginate,
Polyvinyl alcohol, carboxymethyl cellulose,
Methyl cellulose, hydroxyethyl cellulose, sodium polyacrylate, sodium polymethacrylate, polyacrylamide, polymethacrylamide, polyvinyl methyl ether, vinyl acetate-maleic acid copolymer, styrene-maleic acid copolymer, polyvinylpyrrolidone, polyacrylic acid ester There are water-soluble polymers such as partially saponified products and polymethacrylic acid ester partially saponified products.

[Other Components] In addition to the above components, in the present invention, for example, ceramic powders such as alumina, silica, zirconia, and titania, synthetic resins such as acrylic resin and styrene-butadiene rubber, and synthetic rubber may be added. Good.

[Substrate] As the substrate of the present invention, for example, a metal plate such as a steel plate, a stainless steel plate, an aluminum plate and a copper plate, a mortar hardened layer without addition of electric furnace oxidation slag, a wood plate, a ceramic plate, etc. are mainly used. However, other plastic plates, plastic foam plates, fiber plates, etc. can also be used as the base material of the present invention. Examples of the wood board include wood veneer, plywood, hard board, particle board, medium density wood fiber board (MDF) and the like.

[Compounding / Molding] In the powder composition of the present invention, 15 to 60 parts by weight of the hydraulic inorganic powder, 100 to 3 parts by weight of the electric furnace oxidized slag granules, and the water reducing agent of 0.01 to 3.
0 parts by weight are mixed. Further, when a high specific gravity metal powder and / or a high specific gravity metal oxide powder is added to the powder composition of the present invention, hydraulic inorganic powder 15 to 60 parts by weight relative to 100 parts by weight of electric furnace oxidation slag granules. 20 to 50 parts by weight of the high specific gravity metal powder and / or the high specific gravity metal oxide powder, and 0.01 to 0.1 parts by weight of the water reducing agent and / or the thickening agent are mixed.

5 parts of water per 100 parts by weight of the above powder composition
-25 parts by weight is added and kneaded, and the kneaded product is cured by being heated and cured at room temperature or, if desired, in water and steam. The cured mortar layer has a plate shape,
It is made into a slab.

Usually, the kneaded product is filled in a mold and cured and cured. In this case, it is desirable to set a base material in the mold. In this case, an adhesive may be applied to the surface of the base material. However, in the present invention, the cured product layer may be first produced, and then the cured product layer may be polymerized on the substrate and adhered by an adhesive. Further, the kneaded product may be poured directly onto the base material without being filled in the mold, and then a mortar hardened layer may be formed by curing by curing.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Example 1 (Production of Electric Furnace Slag Granules) FIG. 1 shows an apparatus for producing electric furnace slag granules (hereinafter abbreviated as slag granules) (8) of the present invention. That is, the electric furnace oxidation slag melt (1) at around 1500 ° C. is transferred from the ladle (2) to the shooter (3) and poured from the shooter (3) into the drums (4,5) with high speed rotation. The steelmaking slag melt
(1) is crushed and granulated by the bladed drums (4,5), and the granulated product (1A) of the electric furnace oxidation slag melt is sprayed from the spray device (7) into the quenching chamber (6). Quenched by water mist. The slag granules (8) thus obtained are stored in the storage container (9). The slag granules (8) are hollow bodies having a substantially spherical shape, have no defects such as cracks on the surface, have fine irregularities, and have high hardness (755 Vickers hardness, about 6 Mohs hardness). It has excellent wear resistance, a true specific gravity of 3.84, an absolute dry specific gravity of 3.52 and a fire resistance of 1100 ° C, and is excellent in magnetic permeability, dielectric properties, acid resistance and alkali resistance. The particle size distribution of the slag granules (8) is shown in FIG.

Example 2 A mixture having the following formulation was prepared. Electric furnace oxidation slag granules (5 mm or less) 100 parts by weight Portland cement 25 〃 AE water reducing agent 0.25 〃 methyl cellulose (thickener) 0.13 〃 Add 15 parts by weight of water to the above mixture and knead for 3 minutes with a mixer As shown in FIG. 3, the kneaded material M ₁ is poured into a mold (11) on which a steel plate S is set, the surface is flattened by a trowel, and the material is aged at room temperature for 1 day and cured by a hydration reaction, and then demolded. Then, the steel sheet S having a width of 300 mm and a length of 1000 mm (thickness: 4.5 mm) as shown in FIG.
And a mortar hardened layer M ₁ '(thickness 5 mm)
2) got.

The noise reduction effect due to the impact of the laminated plate (12) was measured. As shown in FIG. 11, the measuring method was carried out by suspending the above laminated plate at a position of 200 mm on a concrete support table with the mortar hardened layer on the upper side, and a diameter of 16 mm as a light impact sound source.
A light impact sound was measured by dropping an iron ball (mm, weight: 16.3 g) from a height of 1 m onto the plate surface and setting a microphone 1 of a sound level meter 1 m directly above. Table 1 shows the measurement results of the noise reduction effect due to the light impact of this example.

[0024]

[Table 1]

Similar to the above-mentioned test method, a heavy impact sound was measured using a rubber ball having a diameter of 42.2 mm and a weight of 45.2 g as a heavy impact sound source. Table 2 shows the measurement results of the noise reduction effect due to heavy impact in this example.

[0026]

[Table 2]

A slip resistance test was conducted on the laminate (12) of this example. The test method was based on ASTM E303-66T.

The laminated plate (12) of this embodiment is useful as a step plate for stairs in factories, houses, offices, etc. When such a laminated plate (12) is used as a step plate for stairs, a mortar hardening layer M ₁ 'provides slip resistance, sound damping and wear resistance. As shown in FIG. 5, the steel plate S of this embodiment may be provided with a checkered protrusion E.
When a wooden board is used as the substrate, it is useful as a step board for stairs such as a house.

Example 3 A mixture having the following formulation was prepared. Electric furnace Oxidized slag granules (5 mm or less) 100 parts by weight Portland cement 16 〃 High performance water reducing agent 0.04 〃 15 parts by weight of water was added to the above mixture and kneaded for 3 minutes with a mixer. As shown in FIG. 6, the kneaded product M ₂ was filled in a mold (21) in which a ceramic disk C was set, and was allowed to cure and cure at room temperature for 3 days. A disc-shaped laminated plate (22) consisting of a ceramic disc C (thickness 50 mm) and a mortar hardened layer M ₂ '(thickness 10 mm) (surface layer portion) as shown in (4) was obtained. The laminate (22) is embedded in the road pavement as shown in FIG. 8 and is used as a magnetic sensor of a magnetic stick (23) for guiding a blind person. Table 3 shows the magnetic characteristics of the mortar hardened layer M ₂ '(surface layer portion) of the laminate (22).

[0030]

[Table 3]

Example 4 A mixture having the following formulation was prepared
It was     Portland cement 100 parts by weight     River sand 300〃     AE water reducing agent 0.3〃 Add 30 parts by weight of water to the above mixture and mix with a mixer for 3 minutes.
Kneaded As shown in FIG. 9, the kneaded material M₃To rebar (33)
Example 2 was filled from the top of the filled mold (31)
Kneaded M₁And cure at room temperature for 3 days,
After demolding, it was cured and cured at room temperature for 25 days, as shown in Fig. 10.
Normal mortar hardened layer M₃'(Thickness 30mm) as a substrate
(Base layer), and mortar with electric furnace oxidation slag added on top
Hardened layer M ₁'(Thickness 10mm) (Laminate part)
A board (32) was produced. The mortar hardened layer M₁From the curing strength
The difference in noise transmission loss before and after construction was measured.
The fluidity test of the kneaded product is based on J
The flow time was 43 seconds as a result of the method
It was. In addition, 28 days underwater curing by the sample collected at this time
The compressive strength of the sample is 35 N / mm²Breathing rate is 2%
there were. The measurement result of the sound transmission loss before and after the construction of this example
It shows in Table 4. The laminated board (32) of this embodiment is, for example, a highway.
It is useful as a sound insulation wall.

[0032]

[Table 4]

[0033]

INDUSTRIAL APPLICABILITY In the present invention, functions such as slip resistance, sound insulation and vibration damping, radioactivity shielding, electromagnetic wave shielding, magnetic permeability, and abrasion resistance are provided on a metal plate such as a steel plate and a base material such as a wooden plate. It is possible to easily add sex.

[Brief description of drawings]

1 and 2 show Embodiment 1 of the present invention.

FIG. 1 is an explanatory diagram of an electric furnace slag granular material manufacturing apparatus.

FIG. 2 is a graph showing the particle size distribution of electric furnace slag granules. 3 to 5 show Embodiment 2 of the present invention.

[Fig.3] Form filling state diagram

FIG. 4 is a perspective view of the obtained laminated plate.

FIG. 5 is a perspective view of a steel plate 6 to 8 show Embodiment 3 of the present invention.

[Fig. 6] Form filling state diagram

FIG. 7 is a perspective view of the obtained laminated plate.

FIG. 8 is a diagram showing the state of use of the laminated plate. FIGS. 9 and 10 show Example 4 of the present invention.

FIG. 9: Form filling state diagram

FIG. 10 is a perspective view of the obtained laminated plate.

FIG. 11: Impact noise reduction effect test device

[Explanation of symbols]

8 Electric furnace slag Granules 11,21,31 Form 12,22,32 Laminated plate M ₁ , M ₂ , M ₃ Kneaded product C Ceramic disc (substrate) S Steel plate (substrate) M ₁ ′, M ₂ ′ Hardening Layer M ₃ 'Mortar hardening layer (substrate)

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[Procedure amendment]

[Submission date] July 4, 2001 (2001.7.4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

The noise reduction effect due to the impact of the laminated plate (12) was measured. As shown in FIG. 11, the measuring method was carried out by suspending the above laminated plate at a position of 200 mm on a concrete support table with the mortar hardened layer on the upper side, and a diameter of 16 mm as a light impact sound source.
An iron ball having a weight of 16.3 g and a weight of 16.3 g was dropped from a height of 1 m onto the plate surface, and a microphone (m) of a sound level meter was set 1 m directly above to measure a light impact sound. Table 1 shows the measurement results of the noise reduction effect due to the light impact of this example. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 5, 2001 (2001.7.5)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Continued front page    (72) Inventor Keiichi Tsuruyama             Aichi Prefecture, Kabu-gun, 14 Yamamura Large-scale horseback ground Nitta             Tame 62 Hoshino Sansho Co., Ltd. F-term (reference) 4F100 AA17B AB01A AB01B AD01A                       AE02A AE02B AE03B AP03A                       AT00A BA02 CA18B CA30B                       DE01B EH31 EJ08 EJ98                       GB07 JA14B JD06 JD08                       JH01 JK01 JK09 JK16 YY00B                 5D061 AA29 BB02 BB40

Claims (6)

[Claims] 1. A laminate comprising a mortar cured layer, which is a cured product of a mixture of electric furnace oxidation slag granules and hydraulic inorganic powder, formed on a substrate. 2. The laminated plate according to claim 1, wherein the base material is selected from the group consisting of a metal plate, a mortar hardening layer containing no electric furnace oxidation slag, a wood plate, and a ceramic plate. 3. Electric furnace oxidation slag granules 1 in the mixture.
15 to 60 parts by weight of hydraulic inorganic powder with respect to 00 parts by weight,
The laminated board according to claim 1 or 2, wherein 0.01 to 3.0 parts by weight of the water reducing agent is mixed. 4. An electric furnace oxidation slag granular material 1 in the mixture.
15 to 60 parts by weight of hydraulic inorganic powder with respect to 00 parts by weight,
High specific gravity metal powder and / or high specific gravity metal oxide powder 2
0 to 50 parts by weight, water reducing agent and / or thickening agent 0.01
~ 0.2 parts by weight are mixed, the laminated plate according to claim 1 to 3. 5. The cured product layer is kneaded by adding 5 to 25 parts by weight of water to 100 parts by weight of the mixture according to claims 1 to 4,
The laminated plate according to claim 1 or 2, which is obtained by curing and curing the kneaded product. 6. The laminated board according to claim 5, wherein the kneaded product is filled in a mold in which the substrate is set and cured by curing.