JP2000034155A - Concrete product, and composite concrete product using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a concrete product having an improved heat-insulating property, an improved sound-absorbing property and an improved sound-scattering effect by solidifying and molding crushed waste roof tiles as an aggregate through a binder. SOLUTION: This concrete product is obtained by crushing waste roof tiles by the use of a roll cracker, treating the crushed product with a vibrating sieve, etc., to obtain an aggregate having granular diameter of 3-5 mm, and subsequently hardening the aggregate through a binder. For example, an aggregate comprising crushed waste roof tiles, a cement-based binder, and water in an amount of 8-11 wt.% based on the total amount of the aggregate and the binder, and, if necessary, a hydrophilic inorganic pigment having a particle diameter of 100-300 μm in an amount of 2-3 wt.% based on the binder are mixed to provide a fluid, and the obtained fluid is poured into a mold and solidified to obtain a concrete product having a desired shape. A synthetic resin such as an epoxy resin or an unsaturated polyester, asphalt, etc., is used as the binder. The hydrophilic pigment includes carbon, iron oxide, iron hydroxide, titanium oxide and chromium oxide. The cement includes Portland cement, furnace cement silica cement, and alumina cement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete product that can effectively utilize tile waste material that is difficult to dispose of as industrial waste and a composite concrete product using the same.

[0002]

2. Description of the Related Art Tiles used as roof materials for buildings such as houses are generated in large quantities as tile waste materials due to rebuilding, extension or remodeling of buildings, and roof re-closing.

[0003] Such tile waste material is usually carried into a landfill and used as a landfill material.

[0004]

According to the prior art, since the tile waste material is generally in the form of a curved plate, the transportation efficiency when transporting it to a landfill site is poor, and even if it is used as a landfill material. In addition, voids are easily generated in the ground, and the obtained ground strength is inferior, and it is not always the best treatment method.

Accordingly, an object of the present invention is to provide a concrete product capable of effectively utilizing and treating waste tile materials by utilizing the waste tile materials as an aggregate in view of the problems of the prior art. An object of the present invention is to provide a composite concrete product utilizing the above.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a first aspect of the present invention is based on the idea of using crushed tile waste material as an aggregate and solidifying it through a binder.

[0007] The aggregate may be adjusted in particle size.

The binder may be cement, and a pigment may be added to the cement.

Further, the binder may be a synthetic resin material.

The gist of the second invention is that it comprises the concrete product according to the first invention and a reinforcing material combined therewith.

[0011]

According to the structure of the first aspect, the aggregate is
Since it is tile waste material pulverized by a roll crusher or the like, it can be formed into an arbitrary concrete product by mixing with a binder to form a fluid, and then putting it into a mold to solidify. However, the aggregate may be kneaded together with the binder at the construction site and cast. Concrete products molded in this way, because the roof tile is porous,
Lighter than those using sand or gravel as aggregate, it has low thermal conductivity, excellent heat insulation and sound absorption properties.In addition, by appropriately setting the particle size of the aggregate, the amount of binder, etc. An air gap can be formed between the materials to achieve any water permeability. In addition, since the tile waste material is fired at 1000 to 1300 ° C., the elution amount of harmful lead is 0.005 mg.
/ l, which can be extremely small.

The aggregate can easily realize appropriate water permeability by adjusting the particle size of the crushed tile waste material. It is preferable that the tile waste material is pulverized by a roll crusher and adjusted to a particle size of about 3 to 5 mm through a plurality of vibrating sieves.

If cement is used as the binder, the concrete product can easily realize necessary and sufficient compressive strength, flexural strength and the like. In addition, as for cement, the water-cement ratio should be appropriately determined according to the amount used for the aggregate. When the particle size of the aggregate is uniform to about 3 to 5 mm, by setting the weight ratio of water to about 8 to 11% with respect to the total of the cement and the aggregate, etc., the consistency and slump can be obtained. Is reduced, the sedimentation of the cement paste is suppressed, workability is optimized, and the strength of the concrete product can be made uniform and sufficiently large. In addition, as cement, besides Portland cement, mixed cement such as blast furnace cement, silica cement, fly ash cement, and special cement such as alumina cement and ultra-rapid hardening cement can be used.

If a pigment is added to the cement, the pigment can color the cement to finish the concrete product with a predetermined texture. The pigment is preferably a hydrophilic inorganic pigment such as carbon, iron oxide, iron hydroxide, titanium oxide, and chromium oxide. The particle size is adjusted to about 100 to 300 μm, and the weight ratio is about What is necessary is just to add about 2-3%. The cement used at this time is preferably normal portland cement or white portland cement.

When a synthetic resin material is used as the binder, the synthetic resin material can quickly solidify the aggregate to form a resin concrete, reduce the weight of the entire resin, and provide a transparent synthetic resin. The material can achieve a unique good appearance by directly exposing the surface of the aggregate. In addition, as the synthetic resin material, a tar-modified resin, asphalt, modified asphalt, vinyl monomer, or the like can be used in addition to a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, or a polyurethane resin.

According to the structure of the second invention, the reinforcing material is the first material.
By combining with the concrete product according to the present invention, the overall strength can be improved and the withstand load can be increased. The reinforcing material may be a concrete product, a metal product, a plastic product, or the like in addition to using the concrete product according to the first invention as it is.
The reinforcing material may be formed integrally with the concrete product of the first invention, or may be formed separately and joined together. Further, the reinforcing material may be water-permeable or water-impermeable.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

The concrete product A is formed by solidifying aggregates A1, A1,... Via a binder (FIG. 1).

FIG. 2 shows a manufacturing procedure of the concrete product A.

That is, the waste tile material is pulverized through a roll crusher or the like, and the particle size is appropriately adjusted to obtain aggregate A1. The aggregate A1 can be formed into a concrete product A of any shape by adding and kneading water and a pigment in addition to cement as a binder, and then kneading the mixture into a mold to solidify. The concrete product A is composed of aggregates A1, A1
By forming continuous voids therebetween, good water permeability can be realized.

FIG. 3 (A) shows an example of the composition of the specimens 1, 2, and 3 of the concrete product A, and FIG. However, the solid line in FIG. 4 indicates the compressive strength F at the age of 7 or 8 days, and the chain line indicates the compressive strength F at the age of 28 days. The compressive strength F is 10 cm in diameter and 2 cm in length based on the compressive strength test of JIS A 1108 concrete.
A 0 cm cylindrical specimen was used.

That is, water / cement ratio W / C = 101%
And unit amount B of tile waste material as aggregate A1 B = 1060 kg
/ m ³ , a unit cement amount C = 100 kg / m ³ , a unit water amount W = 101 kg / m ³ , a pigment G = 3 kg / m ³ , and a compressive strength F = 2.39 N at 7 days of age. / mm ² , and a compressive strength F = 3.14 N / mm ^{2 at a} material age of 28 days. In addition, water cement ratio W / C = 46%, 37%,
Unit cement amount C = 300 kg / m ³ , 450 kg / m ³ , unit water amount W = 138 kg / m ³ , 166.5 kg / m ³ , pigment G = 9
kg / m ³ and 13.5 kg / m ³ , respectively, so that the compressive strength F at the age of 7 days or 8 days is 11.8 N / mm.
^2, 16.3N / mm ² is obtained, compressive strength at age of 28 days F = 12.8N / mm ^2, it was possible to obtain a 18.1N / mm ^2.

In the composition of the specimens 1, 2, and 3 shown in FIG. 3A, the unit water amount W and the unit water amount W have a substantially linear relationship (FIG. 5). That is, the unit water amount W with respect to the total unit amount Z including the tile waste material, cement, and pigment.
Is set to 8 to 11% (FIG. 3 (B)), and even if the compressive strength F is changed by changing the unit cement amount C, the consistency and the slump are reduced to realize good workability. I was able to. At this time,
It is possible to suppress the sedimentation of the cement paste with respect to the aggregates A1, A1,... To make the strength of the concrete product A uniform and obtain good water permeability.

The bending strength fb of the test specimens 1 and 2 in FIG.
Is shown in FIG. That is, the unit amount B of tile waste material = 1060
Unit cement content relative ^{kg / m 3 C = 100kg /} m 3, 30
When it is 0 kg / m ³ , the flexural strength fb at 30 days of age
= 0.68 N / mm ² , 2.23 N / mm ² . However, the bending strength fb was measured based on a bending strength test of JIS A 1106 concrete.

In the concrete product A, the aggregates A1, A1,... May be solidified by using the binder as an epoxy resin (FIG. 7). At this time, the specimen 4 has a unit epoxy resin amount E =
160kg / m ³ (1 unit quantity B = 1060kg / m ³ of tile waste
5%), and the compressive strength at the age of 7 days F = 3.9 N / mm
² could be achieved. However, the compression strength F is J
According to IS A 1108, the same cylindrical specimens as specimens 1, 2, and 3 were used.

FIG. 8 shows an actual measurement example of the thermal conductivity ρ of the test pieces 1, 2, and 4. According to the figure, the thermal conductivity ρ = 0.3
０．４0.4 kcal / h ・ m ・ ° C. can be obtained, which can be reduced to 32 to 42% as compared with that of the comparative example composed of cement mortar having a ratio of cement and fine aggregate of 1: 4. Note that the thermal conductivity ρ was measured by a heat flow meter method.

The concrete product A according to the present invention is light in weight and can obtain a natural color peculiar to a tile. Therefore, when used as a construction material for a sidewalk, a garden, a parking lot, a car wash space, etc., the concrete product A utilizes the water permeability. It realizes good drainage performance, low heat conductivity, so it does not have strong summer shine, soft walking feeling, good weather resistance, and can maintain a good initial state for a long time. it can. In addition, when used as a building material such as a wall material and a floor material, in addition to being lightweight, the heat insulating effect of the building can be improved, and the sound absorbing property and the sound dispersing effect can be greatly improved.

[0028]

[Other Embodiments] A concrete product A may be combined with a reinforcing material P to form a composite concrete product AP (FIG. 9). By attaching the reinforcing material P to the concrete product A, the concrete product A can be reinforced to realize an arbitrary strength. The reinforcing material P may be made of metal or plastic, in addition to a water-permeable or water-impermeable concrete product. However, as the reinforcing material P made of concrete, ceramic scrap may be used as an aggregate in addition to general gravel. The concrete product A may be formed integrally with the reinforcing material P, or may be formed separately from the reinforcing material P and joined together.

Further, the concrete product A can be used as, for example, a building interior and exterior wall material by laying and attaching a large number of concrete products A to a panel-shaped large-area reinforcing material P.

In the above description, concrete product A
1 and 9, it may be formed as a tile, an interlocking shape or the like, or may be formed as an arbitrary product generally made of concrete such as a pot or a pseudo-wood. The aggregates A1, A1,... May be kneaded together with the binder at the construction site and cast.

[0031]

As described above, according to the first invention of the present application, by using tile waste material as an aggregate and solidifying through a binder, the characteristics of the porous tile can be utilized to reduce the weight. Therefore, there is an excellent effect that the tile waste material can be effectively used and can be suitably used as a construction material, a building material, and the like, because the tiles can achieve high heat insulation.

According to the second invention, a high-strength composite concrete product can be formed by combining the concrete product according to the first invention with a reinforcing material, and the use of the concrete product can be further expanded.

[Brief description of the drawings]

FIG. 1 is an overall perspective explanatory view.

FIG. 2 Manufacturing process diagram

FIG. 3 is a chart showing characteristic data (1).

FIG. 4 is a diagram showing characteristic data (1).

FIG. 5 is a diagram (2) showing characteristic data;

FIG. 6 is a table showing characteristic data (2).

FIG. 7 is a chart showing characteristic data (3).

FIG. 8 is a chart showing characteristic data (4).

FIG. 9 is a perspective explanatory view showing another embodiment.

[Explanation of symbols]

 A: Concrete product A1: Aggregate P: Reinforcement AP: Composite concrete product

Claims (6)

[Claims] 1. A concrete product obtained by using crushed tile waste material as an aggregate and solidifying via a binder. 2. The concrete product according to claim 1, wherein a particle size of the aggregate is adjusted. 3. The concrete product according to claim 1, wherein the binder is cement. 4. The concrete product according to claim 3, wherein a pigment is added to said cement. 5. The concrete product according to claim 1, wherein the binder is a synthetic resin material. 6. A composite concrete product comprising the concrete product according to claim 1, and a reinforcing material to be combined with the concrete product.