JPH09202658A - Inorganic composition and production of highly abrasion-resistant inorganic hardened product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an inorganic composition, capable of reducing the weight by reducing the wall thickness due to a high strength and providing an inorganic hardened product, improved in executability and having high abrasion resistance and provide a method for producing a highly abrasion-resistant inorganic hardened product. SOLUTION: This inorganic composition comprises (A) 100 pts.wt. SiO2 -Al2 O3 - based powder, (B) 1-300 pts.wt. alkali metallic silicate, (C) 10-1000 pts.wt. water and (D) at least one or more high-hardness grains selected from the group consisting of 1-100 pts.wt. grains, comprising oxide-based grains having >7 Mohs hardness and containing >=70wt.% thereof having 5-300μm grain diameter and/or 1-100 pts.wt. nonoxide-based grains having >7 Mohs hardness and containing >=70wt.% thereof having 5-300μm grain diameter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an architectural member such as a house or a building, particularly an inorganic composition capable of obtaining a high abrasion resistant inorganic cured body, and a method for producing the high abrasion resistant inorganic cured body. .

[0002]

2. Description of the Related Art Conventionally, natural stones, tiles, and cementitious pseudolites have been used as materials for floors for shoes, but especially cementitious pseudolites are inexpensive and often used. For this reason, various shapes and manufacturing methods have been proposed for cement-based flooring materials. For example, in JP-A-4-148901, a resin emulsion is sprayed onto a concrete block containing seed stone immediately after molding. A concrete pseudo stone block with improved productivity and quality and a method for manufacturing the same have been proposed.

[0003]

However, since the bending strength of the cement floor material is low, it is necessary to increase the thickness, which makes it heavy and difficult to increase in size.
There was a difficulty in workability. The present invention is to solve the above problems, it is possible to reduce the weight by thinning because of its high strength, an inorganic composition that can obtain a high wear-resistant inorganic cured body improved workability It is an object of the present invention to provide a method for producing a high wear-resistant inorganic cured product having improved workability, which is made possible by reducing the thickness of the product and thinning due to its high strength as well as high wear resistance. .

[0004]

The inorganic composition of the present invention comprises (A) 100 parts by weight of SiO ₂ —Al ₂ O ₃ -based powder,
(B) 1 to 300 parts by weight of alkali metal silicate, (C) 10 to 1000 parts by weight of water, and (D) oxide particles having a Mohs hardness of more than 7, 70% by weight or more of which has a particle size of 5 1 to 1000 parts by weight of particles having a particle size of 5 to 300 μm, and / or 1 to 1000 parts by weight of non-oxide particles having a Mohs hardness of more than 7, and 70% by weight or more of the particles include 1 to 100 parts by weight of particles having a particle size of 5 to 300 μm It is characterized by comprising at least one or more high hardness particles selected from the group.
Further, the method for producing a highly abrasion-resistant inorganic cured body of the present invention,
The above inorganic composition is poured into a mold while being vibrated at a vibration acceleration of 0.5 to 100 G and then cured, or is poured into a mold and then cured at a vibration acceleration of 0.5 to 100 G and then cured. It is characterized by

The above SiO ₂ -Al ₂ O ₃ system powder (A)
Is preferably SiO ₂ / Al ₂ O ₃ = 1/9 to 9/1 (weight ratio), and Si with respect to the entire powder particles is used.
When the ratio of the total amount of O ₂ and Al ₂ O ₃ is small, the reactivity with the aqueous solution of alkali metal silicate is low and the strength of the obtained cured product is low, so 50% by weight or more is preferable.

As such SiO ₂ -Al ₂ O ₃ powder, for example, fly ash containing 80% by weight or more of particles having a particle size of 10 μm or less, particles of 10 μm or less fired at 400 to 1000 ° C. Fly ash containing 80% by weight or more of particles having a diameter of powder. A powder obtained by melting fly ash and / or clay and spraying it into a gas. Obtained by applying mechanical energy of 0.1 to 30 kwh / kg to clay. Powder obtained Powder further obtained by heating the above powder at 100 to 750 ° C. Powder obtained by applying mechanical energy of 0.1 to 30 kwh / kg to metakaolin. Examples include ash pulverized calcined bauxite metakaolin for electric dust collectors.

[0007] The fly ash is JIS A 6
201 is defined, the fine ash particles to be collected by the dust collector from the pulverized coal combustion boiler, SiO ₂ 40 wt% or more,
Moisture content 1% by weight or less, specific gravity 1.95 or more, specific surface area 270
It passes through 0 cm ² / g or more and 44 μm standard sieve at 75% by weight or more. As a method for obtaining the above-mentioned fly ash containing 80% by weight or more of particles having a particle size of 10 μm or less from this fly ash, any conventionally known method can be adopted, and for example, wet sedimentation classification, wind classification, Classifiers that are commonly used, such as separation by specific gravity; or
A fine pulverizer such as a jet mill, a roll mill or a ball mill; or a method using a continuous system of a classifier and a fine pulverizer can be mentioned.

If the amount of fly ash having a particle size of 10 μm or less is less than 80% by weight, the reactivity with an aqueous solution of an alkali metal silicate becomes low, the strength of the obtained cured product is lowered, and curing failure is likely to occur. .

In order to obtain the above fly ash, the above fly ash is fired at 400 to 1000 ° C., or the fly ash fired at 400 to 1000 ° C. is used in the same manner as above to obtain a particle size of 10 μm or less. The fly ash containing 80% by weight or more of the particles may be produced. The reason for baking is that fly ash is generally black and is unsuitable for coloring the cured product, and therefore it is decolorized by baking. As for the firing temperature, decolorization is possible at 400 ° C or higher, but 1000 ° C
If it exceeds, the reactivity with the aqueous solution of the alkali metal silicate becomes low, so the temperature is limited to 400 to 1000 ° C.

In the powder obtained by melting fly ash and / or clay and spraying it into a gas, as a method of melt spraying into a gas, a thermal spraying technique applied to ceramic coating can be mentioned. This spraying technique is preferably a method in which fly ash and / or clay is melted at a temperature of 2000 to 16000 ° C.
It is sprayed at a speed of 800 m / sec, and specific examples thereof include a plasma spraying method, a high energy gas spraying method, and an arc spraying method. According to the above thermal spraying technique, powder having a specific surface area of 0.1 to 60 m ² / g is generally obtained.

As the clay used in and above
Is SiO_Two5 to 85% by weight, Al _TwoO_ThreeIs 90-1
Examples of the content include 0% by weight, for example, kaolina
Ites, daikite, nakrite, halloysite, etc.
Olin minerals; muscovite, illite, phengite, sea green
Stone, celadonite, paragonite, brammalite, etc.
Mica clay minerals; montmorillonite, beidellite, non
Smoke ties such as tronite, savonite, sauconite
G; chlorite; pyrophyllite; talc; shale, etc.
Is mentioned.

The above-mentioned mechanical energy means the force of at least one selected from the group consisting of compressive force, shearing force and impact force. Examples of equipment that applies these forces include a ball mill, a vibration mill, a planetary mill, a media agitation mill, a roller mill, a mortar, and a jet pulverizer.

When the magnitude of the mechanical energy is small, the reactivity of the obtained powder with the aqueous solution of alkali metal silicate is low, and when it is large, the load on the crushing device is large, and the wear and damage of the device are caused. 0.1 to 30 kwh / kg as it increases and there is a risk of inclusion as impurities.
And preferably 1.0 to 26 kwh / kg.

When the above mechanical energy is applied, a grinding aid may be added if necessary. The grinding aid is a material that prevents the clay powder or metakaolin powder from adhering to the inside of the apparatus or significantly agglomerating when mechanical energy is applied. For example, alcohols such as methyl alcohol and ethyl alcohol; triethanol Examples thereof include alcohol amines such as amines; metal soaps such as sodium stearate and calcium stearate; and acetone vapor. These may be used alone or in combination of two or more kinds.

The above powder is obtained by further adding 1 to the above powder.
The powder is obtained by heating at 00 to 750 ° C. The reason for heating is that the mechanical strength of the obtained cured product is improved. When the heating temperature is low, no improvement in strength can be observed, and when it is high, crystallization of the powder occurs and the reactivity with the alkali metal silicate aqueous solution decreases.
Limited to 100 to 750 ° C, preferably 200 to 60
0 ° C. When the heating time is shortened, the mechanical strength of the obtained cured product is not improved so much, and when the heating time is increased, the energy cost is increased, so 1 minute to 5 hours is preferable.

The above-mentioned powders and the above-mentioned powders are Japanese Patent Publication No. 3-906.
No. 0 and Sho 58-35867, ash of an electric dust collector at the time of manufacturing corundum or mullite; pulverized and calcined bauxite powder.

Commercially available metakaolin can be used as the above-mentioned metakaolin.

Al, which is used in the inorganic composition of the present invention,
Potassium metal silicate (B) is SiO_Two-Al_TwoO_ThreePowder
NSiO, which acts as a curing agent for (A)_Two
/ M _TwoO (M is one kind selected from K, Na and Li
It is a salt represented by the above metals). The value of n is small
If so, the appearance of the obtained cured product deteriorates, and the water resistance is
When it becomes low and large, the aqueous solution tends to gel.
Therefore, 0.05 to 8 is preferable, and 0.5 to 2.5 is further
preferable.

The alkali metal silicate (B) is preferably added as an aqueous solution when the inorganic composition of the present invention is prepared, and when the concentration of the aqueous solution becomes low, SiO ₂ -A.
The reactivity with the l ₂ O ₃ -based powder (A) is low, and the water resistance of the cured product is low. If the water resistance is high, alkali metal salts are likely to be formed, and the viscosity of the aqueous solution is high. -Workability during molding is reduced, so 10 to 60% by weight is preferable.

In the preparation of the above-mentioned alkali metal silicate aqueous solution, the alkali metal silicate (B) may be directly dissolved in water under pressure and heating, but silica sand, silica stone powder, etc. may be added to the alkali metal hydroxide aqueous solution. The SiO ₂ component may be melted under pressure and heating so that n becomes a predetermined value.

The amount of the alkali metal silicate (B) is less becomes the curing of the inorganic composition is not sufficiently performed, since the water resistance of the cured product obtained from a number comes to the composition decreases, the SiO ₂ - It is limited to 1 to 300 parts by weight with respect to 100 parts by weight of Al ₂ O ₃ based powder (A).
0 parts by weight is preferred.

The total amount of water (C) used in the inorganic composition of the present invention may be added as the alkali metal silicate aqueous solution, or may be added independently of the alkali metal silicate aqueous solution. . When the amount of water (C) decreases, the composition does not cure sufficiently, and when the amount increases, the strength of the cured product decreases. Therefore, relative to 100 parts by weight of the above-mentioned SiO ₂ —Al ₂ O ₃ -based powder (A). It is limited to 10 to 1000 parts by weight, preferably 10 to 750 parts by weight, and 50 to 500 parts by weight.
Part by weight is more preferred.

The high hardness particles (D) used in the inorganic composition of the present invention are composed of oxide particles having a Mohs hardness of more than 7 and / or non-oxide particles having a Mohs hardness of more than 7. It is at least one or more selected from the group.

The above-mentioned oxide-based particles mean those having an oxygen atom in their composition formula. As the oxide particles, for example, yellow balls, alumina, alumina-zirconia,
Examples include emery, garnet, zirconia, zircon, and silica sand. The non-oxide particles include diamond; nitrides such as Si, Ti, Zr, Ta, Nb, Cr, V and B; borides such as Ti, Zr, W, Mo, Ta and Nb; Si and B. , W carbide, and the like. Among these, alumina, emery, garnet, zirconia, zircon, and silica sand are preferable as the oxide particles, and Si carbide is preferable as the non-oxide particles, from the viewpoints of availability and cost.

When the particle size of the high hardness particles (D) is small, the wear resistance of the obtained cured product is insufficient, and when it is large, the surface smoothness of the cured product and the wear resistance are reduced. 70% by weight of high hardness particles (D)
The above is required to have a particle size of 5 to 300 μm, and further 8
It is preferable that 0% by weight or more has a particle diameter of 5 to 300 μm.

When the amount of high hardness particles (D) decreases,
If the wear resistance of the obtained cured product becomes insufficient and increases, the mechanical strength of the cured product becomes low in the case of oxide particles, and curing failure of the composition occurs in the case of non-oxide particles. With respect to 100 parts by weight of SiO ₂ —Al ₂ O ₃ -based powder, the amount of oxide particles is limited to 1 to 1000 parts by weight, preferably 1 to 800 parts by weight. In this case, the amount is limited to 1 to 100 parts by weight, preferably 1 to 70 parts by weight.

If necessary, an inorganic filler, a reinforcing fiber, a lightweight aggregate, a pigment, a foaming agent, a foaming aid, a foaming agent, etc. may be added to the inorganic composition of the present invention.

The above-mentioned inorganic filler is not particularly limited as long as it does not dissolve in water, does not inhibit the curing reaction of the inorganic composition, and has a low activity with respect to the alkali metal silicate aqueous solution, and examples thereof include talc and silica. Powders, rock powders, volcanic ash (shirasu, anti-firestones, etc.), wollastonite, calcium carbonate, diatomaceous earth, mica, mica, silica fume and the like.
These may be added alone or in combination of two or more. The reason why the inorganic filler having low activity with respect to the alkali metal silicate aqueous solution is preferable is that if the activity is high, gelation of the alkali metal silicate aqueous solution proceeds rapidly, and mixing and molding become difficult. If the amount of the inorganic filler increases, the mechanical strength of the cured product may decrease, so 100 to 900 parts by weight is preferable with respect to 100 parts by weight of the SiO ₂ —Al ₂ O ₃ -based powder.

As the above-mentioned reinforcing fibers, reinforcing fibers used in ordinary cement products can be used, and examples thereof include vinylon fibers, polypropylene fibers, rayon fibers, alkali glass fibers, carbon fibers, acrylic fibers, aramid fibers,
Examples thereof include acrylonitrile fiber and the like, and these may be used alone or in combination of two or more kinds.

If the fiber diameter of the above-mentioned reinforcing fiber becomes thin, it will be re-aggregated at the time of mixing and fiber balls will be easily formed by entanglement, and the strength of the cured product obtained from the composition of the present invention will be easily decreased. Since the reinforcing effect such as strength improvement becomes small, the thickness is preferably 1 to 500 μm.
When the fiber length of the reinforcing fiber becomes short, the reinforcing effect such as improvement in tensile strength becomes small, and when it becomes long, the dispersibility of the fiber decreases and a cured product having uniform strength cannot be obtained.
1 to 15 mm is preferable. Since the dispersibility of the fibers decreases as the amount of the reinforcing fibers increases, the SiO ₂ —Al ₂
It is preferably 10 parts by weight or less based on 100 parts by weight of the O ₃ powder (A).

The above lightweight aggregate is added for the purpose of reducing the weight of the cured product obtained from the composition of the present invention. For example, perlite, glass balloons, silica balloons, fly ash balloons, shirasu balloons, etc. Examples of the inorganic foam include organic foams such as phenol resin, urethane resin, polyethylene, and polystyrene. These may be added alone or in combination of two or more kinds. When the amount of the lightweight aggregate increases, the strength of the cured product decreases, the surface smoothness decreases, or the molding workability decreases, so the SiO ₂ —Al ₂ O ₃ -based powder (A) 100
It is preferably 150 parts by weight or less with respect to parts by weight.

Examples of the above-mentioned pigments include metal oxide pigments such as iron oxide, titanium oxide and cobalt oxide, and carbon black. Even if the amount of the pigment is increased, the hiding power is not improved and it is uneconomical. Therefore, the above SiO ₂ -A
It is preferably 50 parts by weight or less with respect to 100 parts by weight of the l ₂ O ₃ based powder (A).

Examples of the foaming agent include hydrogen peroxide solution, peroxide powder (sodium peroxide, potassium peroxide,
Sodium perborate, etc., metallic powder (Mg, Ca, Cr,
Mn, Fe, Co, Ni, Cu, Zn, Al, Ga, S
n, Si, ferrosilicon, etc.), and the particle size of the powder is preferably 1 to 200 μm because the smaller the particle size, the lower the dispersibility and the more easily the foaming tends to occur rapidly, and the larger the particle size, the lower the reactivity. As a foaming agent, in terms of cost, safety, easy availability, easy mixing, etc.
Hydrogen peroxide water and Al powder are preferred. The amount of foaming agent is
A reduction in strength of the cured product is significantly more, since hardly can handle such a molded body, SiO ₂ -Al ₂
5 parts by weight or less (in the case of a solution, a solid content conversion value) is preferable with respect to 100 parts by weight of the O ₃ based powder (A).

The foaming aid is not particularly limited as long as it uniformly causes foaming, and examples thereof include metal stearates such as zinc stearate, calcium stearate and aluminum stearate, and palmitin such as zinc palmitate. Metal soap such as acid metal salt; silica gel,
Examples thereof include zeolite, activated carbon, and porous powder such as alumina gel. These may be used alone or 2
More than one type may be used in combination. Since the amount of the foaming aid, adversely affect the foaming caused many become the foam breaking, etc., SiO ₂ -
It is preferably 10 parts by weight or less with respect to 100 parts by weight of the Al ₂ O ₃ based powder (A).

As the above-mentioned foaming agent, a foaming agent used in ordinary cement products can be used, and examples thereof include higher alcohol sulfate ester salts, alkyl ether sulfate ester salts,
Aromatic derivative sulfonates, imidazoline derivatives, fatty acid amides, animal protein foaming agents and the like can be mentioned. When the amount of the foaming agent is large, curing failure of the composition is likely to occur, so 10 parts by weight or less is preferable with respect to 100 parts by weight of the SiO ₂ —Al ₂ O ₃ -based powder (A).

To obtain the inorganic composition of the present invention, first,
An aqueous solution of an alkali metal silicate is prepared from the alkali metal silicate (B) and water (C), and SiO ₂ —Al ₂ O is added thereto.
_{The 3} type powder (A), the high hardness particles (D) and, if necessary, the inorganic filler, the reinforcing fiber, the lightweight aggregate, the pigment, the foaming agent, the foaming aid, and the foaming agent may be mixed. Further, the powder raw materials may be dry-mixed and then the alkali metal silicate aqueous solution may be added and mixed, or all the raw materials may be simultaneously supplied and mixed, or the alkali metal silicate aqueous solution may be mixed. Part of the solid raw materials may be mixed, and the raw materials may be sequentially added and mixed. For the mixing, for example, an ordinary mixer such as a paddle rotary mixer, a rocking mixer, a screw mixer, or the like may be used. When a foaming agent is used, it is more advantageous to add and mix it at the end of the mixing step in terms of workability and bubble stability. When a foaming agent is used, a method of adding and mixing the foaming agent at the end, or making a slurry with a raw material other than the foaming agent, and mixing the foaming agent with an aqueous solution in which bubbles are generated with water Is preferred. When the concentration of the foaming agent when the above foaming agent is used as an aqueous solution is low, the stability of the cells is poor and the cells are easily broken, and when it is high, curing failure is likely to occur. preferable.

In order to obtain a molded article from the inorganic composition of the present invention, the inorganic composition obtained as described above is shaped into a desired shape by a conventionally known method such as casting, press molding or extrusion molding. It may be cured.

The temperature for curing may be room temperature, but by curing at 50 to 200 ° C., the curing reaction can be promoted and the curing can be completed in a short time.

The method for producing a highly wear-resistant inorganic cured product according to the second aspect of the present invention is the method of pouring the inorganic composition according to the first aspect into a mold while applying a vibration acceleration of 0.5 to 100 G and then curing the composition. It is characterized in that it is cured, or after being poured into a mold, vibration with a vibration acceleration of 0.5 to 100 G is applied and then cured.

When the above-mentioned vibration intensity becomes small, the effect of improving the wear resistance of the hardened body cannot be recognized by applying vibration, and it is mechanically difficult to apply vibration of 100 G or more, and the molding operation becomes dangerous. Therefore, it is limited to 0.5 to 100 G, and preferably 1 to 50 G. The vibration direction may be a vertical direction, a horizontal direction, or a three-dimensional direction.

As the method of applying the vibration, for example, a method of setting a mold on a table vibrator and applying vibration to the mold, a method of attaching a vibrator to a mold to apply vibration, and a method of applying vibration to the inorganic composition itself And the like.

When the vibration application time is shortened, the vibration effect becomes insufficient, and if it is too long, the effect is not improved and it is uneconomical. Therefore, it is preferably 3 seconds to 1 hour and 10 seconds to 50 minutes. Is more preferable.

The inorganic composition may be poured into the mold by a free fall method or by using a pump or the like.
In the method for producing an inorganic cured body of the present invention, the surface of the cured body after molding is the bottom surface side when poured into a mold.

In the method for producing a highly wear-resistant inorganic cured product of the present invention, the inorganic composition is poured into a mold while being vibrated, or after being poured into the mold and then vibrated, and then cured. The temperature at the time of curing may be room temperature, but by curing at 50 to 200 ° C., the curing reaction can be accelerated and the curing can be completed in a short time.

(Function) The inorganic composition of the present invention comprises SiO
_2- Al ₂ O ₃ -based powder (A), alkali metal silicate (B), water (C) and high hardness particles (D) are mixed in a specific concentration range, so that high strength is required. It is possible to reduce the weight by thinning the thickness, and to obtain an inorganic cured product with improved workability. In particular, since it contains the high hardness particles (D), it is possible to obtain an inorganic cured product having high wear resistance. According to the method for producing a hardened inorganic hardened material of the present invention, the high hardness particles (D) settle due to vibration. Therefore, when the bottom surface side when poured into the mold is made a surface, the wear resistance of the surface is particularly improved. A cured product can be obtained,
The high strength makes it possible to reduce the weight by reducing the wall thickness,
It is possible to obtain a high wear-resistant inorganic cured body with improved workability.

[0046]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described.

First, the details of the materials used in the following examples and comparative examples are as follows.

SiO ₂ —Al ₂ O ₃ system powder SiO ₂ —Al ₂ O ₃ system powder A Metakaolin (manufactured by Engelhard, trade name: SATI)
NTONE SP 33, average particle size 3.3μm, BET
Specific surface area 5.8 m ² / g).

SiO ₂ -Al ₂ O ₃ -based powder B 100 parts by weight of SiO ₂ -Al ₂ O ₃ -based powder A and 0.5 parts by weight of a mixed solution of 25% by weight of triethanolamine and 75% by weight of ethanol were added to Ultrafine. It was supplied to a mill (manufactured by Mitsubishi Heavy Industries, Ltd., using zirconia balls 10 mmφ, ball filling rate 85% by volume), and mechanical energy of 10 kwh / kg was applied to obtain SiO ₂ —Al ₂ O ₃ -based powder B. The above mechanical energy value is the electric power supplied to the ultrafine mill divided by the unit weight of the treated powder.

SiO ₂ -Al ₂ O ₃ -based powder C Kaolin (composition: SiO ₂ 45.7% by weight, Al ₂ O ₃
38.3% by weight, average particle size 5 μm, BET specific surface area 5.
8 m ² / g) 100 parts by weight and triethanolamine 2
0.5 parts by weight of a mixed solution of 5% by weight and 75% by weight of ethanol was used in Ultra Fine Mill AT-20 (manufactured by Mitsubishi Heavy Industries, Ltd., zirconia ball 10 mmφ was used, and ball filling rate was 8
5% by volume) and mechanical energy of 25 kwh / kg was applied to obtain SiO ₂ —Al ₂ O ₃ -based powder C. The above mechanical energy value is the electric power supplied to the ultrafine mill divided by the unit weight of the treated powder.

SiO ₂ -Al ₂ O ₃ system powder D fly ash (according to JIS A 6201,
KANDEN KAKO CO., LTD. Average particle size 20 μm) is classified by a classifier (Nisshin Engineering Co., model: TC-15),
100% by weight of powder having a particle size of 10 μm or less.

Alkali metal silicate aqueous solution (alkali metal
Corresponding to the total amount of silicate (B) and water (C)) No. 1 sodium silicate aqueous solution (Nippon Kagaku Kogyo KK), potassium silicate aqueous solution (Nippon Kagaku Kogyo KK, trade name 1K potassium silicate), hydroxylation The alkali metal silicate aqueous solutions i to vi shown in Table 1 were prepared using sodium (manufactured by Wako Pure Chemical Industries, special grade reagent), potassium hydroxide (manufactured by Wako Pure Chemical Industries, special grade reagent) and water.

[0053]

[Table 1]

High hardness particles High hardness particles I to X shown in Table 2 were used.

[0055]

[Table 2]

(Examples 1 to 6, Comparative Examples 1 to 9) Tables 3 to 5
In a predetermined amount (the unit of the blending amount is parts by weight) of the alkali metal silicate aqueous solution shown in Table 3, the predetermined amount of S shown in Tables 3 to 5 is added.
iO ₂ -Al ₂ O ₃ -based powder, high hardness particles, talc (manufactured by Nippon Talc Co., trade name “Talc S”), silica stone powder (manufactured by Sumitomo Osaka Cement Co., trade name “soft silica”), vinylon fiber ( Kuraray Co., Ltd., trade name “RM182-4”), hydrogen peroxide solution (Mitsubishi Gas Chemical Co., concentration 35%), zinc stearate (Sakai Chemical Co., trade name “SZ-2000”) An inorganic composition was prepared. The mixing conditions are shown in Tables 6 and 7. Then, from the obtained inorganic composition, 5 × under the molding conditions and curing conditions shown in Tables 6 and 7.
A 220 × 220 mm inorganic cured product was obtained.

(Comparative Example 10) A commercially available cement-based terrazzo with a polished surface. Purchased from Konan Ibaraki store.

[0058]

[Table 3]

[0059]

[Table 4]

[0060]

[Table 5]

[0061]

[Table 6]

[0062]

[Table 7]

Performance Evaluation The obtained inorganic cured product was cut and the performance was evaluated by the following methods, and the results are shown in Tables 8 and 9. Surface smoothness It was touched by hand, and the feeling of roughness was evaluated by a sensory test. (Evaluation criteria) ○: There is a feeling of roughness. X: There is no rough feeling. Bending Strength According to JIS A 1408, a No. 5 test body (test body size: 150 × 200 mm, thickness 5 mm) was tested in a dry state.

Specific gravity of test piece Bending strength Weight of test piece / (width × length × thickness) was calculated. Abrasion resistance Based on JIS A 1453, test piece size is 100
X 100 mm (thickness 5 mm), 50 at a total load of 1 kg
The wear loss (g) after 0 rotation was calculated. In addition, the test body used the water content adjusted to 60 degreeC dry constant weight state.

[0065]

[Table 8]

[0066]

[Table 9]

Examples 7 to 11 and Comparative Example 11 below are
The present invention relates to a high wear resistant inorganic hardened material according to claim 2, and although Examples 10 and 11 are examples of the inorganic composition according to claim 1, the high wear resistant inorganic material according to claim 2 The invention relating to the cured product corresponds to the comparative example.

(Examples 7 to 11 and Comparative Example 11) A predetermined amount of the SiO 2 aqueous solution of the alkali metal silicate shown in Table 10 (the unit of the blending amount is parts by weight) was used.
_2- Al ₂ O ₃ based powder, high hardness particles, silica stone powder (Sumitomo Osaka Cement Co., trade name “Soft Silica”), vinylon fiber (Kuraray Co., trade name “RM182-4”) are mixed. An inorganic composition was prepared. An omni mixer (manufactured by Chiyoda Giken Kogyo Co., Ltd., model OM-5) is used as the mixer.
The mixing time is as shown in Table 11.

The obtained inorganic composition was reinforced with a plate made of SUS304 having a thickness of 3 mm for Examples 7 and 8 (nitrile-butadiene rubber).
After putting it in the mold, it vibrates under the vibration conditions shown in Table 11,
Then, it was cured under the curing conditions shown in Table 11 to obtain 10 × 3.
An inorganic cured body of 50 × 350 mm was obtained. For Example 9 and Comparative Example 11, the inorganic composition was filled in the same mold as above while vibrating under the vibration conditions shown in Table 11 for 20 seconds, and then cured under the curing conditions shown in Table 11. Then, an inorganic cured body of 10 × 350 × 350 mm was obtained.

[0070]

[Table 10]

[0071]

[Table 11]

Performance Evaluation The obtained inorganic cured product was cut and the performance was evaluated by the following methods, and the results are shown in Table 11. Bending Strength According to JIS A 1408, a No. 5 test body (test body size: 150 × 200 mm, thickness 5 mm) was tested in a dry state.

Specific gravity of test piece Bending strength Weight of test piece / (width × length × thickness) was calculated. Abrasion resistance Based on JIS A 1453, test piece size is 100
X 100 mm (thickness 5 mm), 50 at a total load of 1 kg
The wear loss (g) after 0 rotation was calculated. The test is
The test was performed on the surface that was in contact with the bottom surface of the mold when the inorganic cured body was prepared. Further, the test body used was one whose water content was adjusted to a constant dry state at 60 ° C.

[0074]

The composition of the inorganic composition of the present invention is as described above. When this inorganic composition is used, it is possible to reduce the weight because of its high strength, and the workability is improved and the wear resistance is improved. It is possible to obtain an inorganic cured product having a high quality. The structure of the method for producing a highly abrasion-resistant inorganic cured product of the present invention is as described above, and according to the production method of the present invention, since the high hardness particles (D) settle due to vibration, the bottom surface when poured into a mold When the side is the surface, it is possible to obtain an inorganic hardened body with particularly improved wear resistance of the surface, and since it has high strength, it is possible to reduce the weight by thinning, and to obtain an inorganic hardened body with improved workability. be able to.

Claims (2)

[Claims] 1. (A) SiO ₂ —Al ₂ O ₃ system powder 10
0 parts by weight, (B) 1 to 300 parts by weight of alkali metal silicate, (C) 10 to 1000 parts by weight of water, and (D) oxide particles having a Mohs hardness of more than 7, 70
Particles 1 to 100 whose weight% is 5 to 300 μm
0 parts by weight and / or non-oxide particles having a Mohs hardness of more than 7, 70% by weight or more of which has a particle diameter of 5 to 3
An inorganic composition comprising at least one high hardness particle selected from the group consisting of 1 to 100 parts by weight of a particle having a size of 00 μm. 2. The inorganic composition according to claim 1 is poured into a mold while being vibrated with a vibration acceleration of 0.5 to 100 G and then cured, or after being poured into the mold, a vibration acceleration of 0.5 to 100 G. A method for producing a highly abrasion-resistant inorganic cured body, which comprises curing after applying the vibration of 1.