JP2003137637A - Concrete material incorporated with incineration ash and concrete material incorporated with carbonized wood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete material incorporated with incineration ash of swage sludge, which exhibits a sufficient strength even when the incineration ash of swage sludge is incorporated, and thereby, with which recycle of resources can be sufficiently performed and as a result, the contribution to environment is realized, and to provide a concrete material incorporated with carbonized wood, which exhibits sufficient strength even when the carbonized wood is incorporated and with which the contribution to environment is realized. SOLUTION: The concrete material incorporated with the incineration ash of swage sludge is obtained by first preparing a concrete raw material by mixing alumina cement as a main raw material, silica fume of 1 to 15 wt.%, based on the concrete raw material, and zirconia of 0.2 to 5.0 wt.%, based on the concrete raw material, then mixing the concrete raw material, a predetermined amount of silica sand, and the incineration ash of swage sludge so that the mixing ratio of the incineration ash of swage sludge becomes 10 to 30 wt.%, based on the total weight of the resulting mixture, and hardening the resulting mixture by adding water to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mixes sewage sludge incineration ash and wood carbide into a concrete raw material mainly made of alumina cement, and mixes incineration ash used in buildings, concrete blocks, slope protection blocks, etc. The present invention relates to a concrete body and a concrete body mixed with wood carbide.

[0002]

2. Description of the Related Art Conventionally, concrete using Portland cement as a main raw material has been widely known. Mixing sewage sludge incineration ash for reuse of resources or mixing wood charcoal with this Portland cement has caused a problem that the strength of concrete is greatly reduced.

[0003]

The problem to be solved by the present invention is to solve these problems in the prior art and to secure the strength so as to contain sewage sludge incineration ash and wood carbide,
The present invention relates to a concrete body mixed with incinerated ash and a wood carbide mixed with which resources can be sufficiently reused.

[0004]

Means for Solving the Problems The constitution of the present invention which has solved the above problems is as follows: 1) Alumina cement as a main raw material, silica fume in an amount of 1 to 15% by weight of the concrete raw material, and zirconia an amount of 0.2 to 5 in the concrete raw material. Concrete raw materials mixed in the range of 0.0% by weight, a predetermined amount of silica sand, and incineration ash are mixed, and the mixing ratio of the incineration ash to the entire mixture is 5
To 70% by weight and concrete mixed with incinerated ash mixed with water and hardened to this mixture 2) Alumina cement as a main raw material, silica fume as 1 to 15% by weight of concrete raw material, and zirconia as 0.2% of concrete raw material. A mixture of concrete raw material mixed in the range of up to 5.0% by weight, a predetermined amount of silica sand, and incineration ash, and the mixing ratio of the incineration ash to the entire mixture is 1
Concrete body containing 0 to 30% by weight and incineration ash mixed with water and cured in this mixture 3) Concrete body containing incineration ash according to 1) or 2) above, wherein the ash is sewage sludge incineration ash 4) A concrete raw material containing alumina cement as the main raw material, silica fume in the range of 1 to 15% by weight of the concrete raw material, and zirconia in the range of 0.2 to 5.0% by weight of the concrete raw material, a predetermined amount of silica sand, and wood. Concrete body in which wood charcoal is mixed and the mixture ratio of wood charcoal to the whole mixture is 5 to 40% by weight, and the mixture is mixed with water and hardened wood charcoal is mixed. 5) Alumina cement is used as a main raw material to produce silica fume. Concrete containing 1 to 15% by weight of concrete raw material and zirconia in the range of 0.2 to 5.0% by weight of concrete raw material. A raw material, a predetermined amount of silica sand, wood carbide, and sewage sludge incineration ash are mixed, and the mixing ratio of the sewage sludge incineration ash is 5 to 30% by weight, and the wood carbon mixture is mixed in the whole mixture. Ratio 5-40
It is in a concrete body containing sewage sludge incineration ash and wood charcoal which are made into a weight% and mixed with water to be hardened.

[0005]

In the present invention, alumina fume is the main raw material, silica fume is 1 to 15% by weight of the concrete raw material, and zirconia is 0.2 to 5.0% by weight of the concrete raw material.
High strength can be obtained by using the concrete raw material mixed in the above range, and the incinerated ash can be mixed in a predetermined range in which the strength does not decrease too much. When the mixing ratio of the incineration ash is 10 to 30% by weight, the amount of the incineration ash is effectively reused and the strength is not excessively lowered. If the incineration ash is sewage sludge incineration ash, the sewage sludge incineration ash is mixed with the concrete body for reuse. A mixture of wood charcoal in a mixing ratio of 5 to 40% by weight is in a range in which the effects of water purification of wood charcoal and the ease of attachment of microorganisms can be sufficiently exerted and the strength is not excessively lowered.
When the sewage sludge incineration ash and wood charcoal are mixed, the sewage sludge incineration ash is reused while obtaining the effects of the water purification power of wood charcoal and the ease of attachment of microorganisms.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Incineration ash includes sewage sludge incineration ash, paper incineration ash, wood incineration ash, coal ash, etc., and is easily reusable, and the strength and quality of concrete bodies can be appropriately obtained. Those that can be mixed in are preferred. The concrete body containing the incineration ash or sewage sludge incineration ash of the present invention and the concrete body containing wood charcoal may be poured into a mold and molded, or may be molded or sprayed onto another material. The concrete body containing the incineration ash or the sewage sludge incineration ash of the present invention and the concrete body containing the woody carbide are used for buildings, concrete blocks, slope protection blocks, wall surfaces, surface walls of other blocks, and the like, and others. It may be used only on the surface of the article, or only on a part of the article, or may be a pasted product. The mixing ratio of the incinerated ash is preferably 5% by weight or more so that the reuse value is exhibited, and when it exceeds 70% by weight, the strength decreases. 70 sewage sludge incineration ash as incineration ash
The compressive strength of 14 days old is 22.7 even if it is blended by weight.
It was N / mm ² . Since the incineration ash is mainly composed of lime, heat is generated when it is mixed with water, the curing time is short, and the work is difficult. If it is up to 30% by weight, the work is easy to perform.
The mixing ratio of wood charcoal is preferably 5% by weight or more so as to exhibit the characteristics of wood charcoal, and 40% by weight.
If it exceeds, the strength is lowered, which is not preferable. In the mixing ratio of the sewage sludge incineration ash and the wood carbide, the mixing ratio of the sewage sludge incineration ash is preferably 5% by weight or more so that the reuse value is exhibited, and when it exceeds 30% by weight, the strength is increased. It is not preferable because it is lowered, and the work becomes difficult. On the other hand, the mixing ratio of the wood charcoal is preferably 5% by weight or more so that the characteristics of the wood charcoal are exhibited, and if it exceeds 40% by weight, the strength is lowered, which is not preferable. 30% by weight of sewage sludge incinerator ash and 40% by weight of wood charcoal have a compressive strength of 22.5N on 14th.
/ Mm ^2, the wood carbide 40% by weight, compressive strength of Zairei 14 days but it was blended sewage sludge incineration ash 15 wt% was 26.6N / mm ^2. The concrete body containing the incineration ash or the sewage sludge incineration ash and the concrete body containing the wood carbide of the present invention have alumina fume as a main raw material, 1 to 15% by weight of silica fume and 0.2 to 5.0% by weight of zirconia. The concrete raw material mixed in the range of% is used. When this concrete raw material is molded with a mold, it has high transfer accuracy of the shape unevenness pattern film on the surface of the mold and also has strength, and the strength manifests quickly so that heating for curing is unnecessary. Microsilica is widely known as silica fume as a concrete raw material used for the concrete body containing the incinerated ash or the sewage incineration ash of the present invention and the concrete body containing the woody carbide. If the mixing ratio of silica fume exceeds 15% by weight, the strength is greatly reduced, and if it is less than 1% by weight, the transfer accuracy is deteriorated. In the concrete raw material used in the present invention, zirconia increases the bending strength, but if it is less than 0.2% by weight, the effect of zirconia is weak and the mixing ratio is 5%.
If the amount exceeds 5% by weight, the effect does not increase, and if the amount increases, the surface loses smoothness and becomes rough, and strength development is delayed, so 5% by weight or less is preferable. In the concrete raw material used in the present invention, alumina cement, silica fume and zirconia are well mixed with a mixer or the like so as to be uniform. Poor mixing results in uneven strength and surface condition. Silica fume (si) used as a concrete raw material in the present invention
licafume) is ultrafine silica powder, and is microsilica (MICRO SILICA: trade name of Elchem Japan Co., Ltd.), SILICA (EGYPTIAN).
FERROALLOYS CO. It is marketed under the company brand name). The particle size of silica fume is about 0.15 μm. Examples of alumina cement used as a raw material for concrete in the present invention include Denka alumina cement (trade name of Denki Kagaku Kogyo Co., Ltd.), Asano alumina cement (trade name of Taiheiyo Cement Co., Ltd.) and Asahi alumina cement (trade name of Asahi Glass Co., Ltd.). The particle size is often about 5 μm. The zirconia used as the concrete raw material in the present invention is commercially available under the trade name of zircon flour and has a particle size of about 4.5 μm or less. The alumina cement component of the concrete body mixed with the incinerated ash or sewage incinerated ash of the present invention and the concrete body mixed with wood charcoal may be reduced to mix coloring components (colored powder), sand of fine particle size, etc. .

[0007]

EXAMPLES Each example of the present invention will be specifically described. Example 1 Example 1 is an example of a concrete body containing sewage sludge incineration ash as incineration ash. In the concrete raw material of the concrete body in which the sewage sludge incineration ash was mixed in Example 1, microsilica (particle name: Elchem Japan Co., Ltd.) having a particle size of 0.15 μm was used as silica fume, and a particle size of 5 μm was used as the alumina cement. Denka alumina cement (trade name of Denki Kagaku Kogyo Co., Ltd.) was used, and zircon flower (Kinsei Matech Co., Ltd. trade name) having a particle size of 45 μm or less was used as zirconia. The material mixing ratio of this concrete raw material is shown in Table 1 below.
In this example, this concrete raw material is hereinafter referred to as concrete raw material A.

[0008]

[Table 1]

This concrete raw material A, sewage sludge incineration ash, and silica sand are thoroughly mixed, and then kneaded with water having a predetermined cement water ratio, poured into a mold and molded, and the bending strength and compression strength after 14 days of age Was measured. Further, for comparison, the bending strength and the compressive strength of the material using Portland cement in place of the concrete raw material A were measured on 14 days. Table 2 shows the mixing ratio of the materials of the concrete body and the measurement results.

[0010]

[Table 2]

As shown in Table 2, the concrete body of Example 1 can obtain very good bending strength and compressive strength as compared with the concrete obtained by mixing Portland cement and sewage sludge incineration ash. Therefore, in the concrete body in which Portland cement and sewage sludge incineration ash are mixed, it becomes possible to use even concrete that cannot be used due to insufficient strength, and resource recycling can be further promoted. Further, when it is used for the same concrete body as a mixture of Portland cement and sewage sludge incineration ash, a concrete body containing a larger amount of sewage sludge incinerator ash can be obtained, and resources can be reused more effectively.

Example 2 Example 2 is an example of a concrete body in which bamboo charcoal is mixed as a woody carbide. In Example 2, concrete raw material A was mixed well with bamboo charcoal and silica sand, then kneaded with water having a predetermined cement water ratio, poured into a mold and molded, and bending strength and compressive strength after 14 days of age were measured. did. Also, for comparison,
The bending strength and compressive strength of the material using Portland cement instead of the concrete raw material A were measured on 14 days. Table 3 shows the mixing ratio of the material of the concrete body and the measurement result.

[0013]

[Table 3]

As shown in Table 3, the concrete body containing the woody carbide of Example 2 can obtain better bending strength and compressive strength than those obtained by mixing bamboo charcoal with Portland cement. Therefore, by mixing the bamboo charcoal, it is possible to broaden the application by taking advantage of the water purification property obtained and the good adhesion of microorganisms and algae. Also,
If the strength of the concrete is the same as that of a concrete body that mixes bamboo charcoal with Portland cement, it can be made to contain more bamboo charcoal, the effect of bamboo charcoal can be further enhanced, and a concrete body that helps create a good environment can be created. .

Example 3 Example 3 is an example of a concrete body in which bamboo charcoal is mixed as a woody carbide and sewage sludge incineration ash is mixed as incineration ash. In Example 3, concrete raw material A, sewage sludge incineration ash, bamboo charcoal, and silica sand were thoroughly mixed, and then kneaded with water having a predetermined cement water ratio, poured into a mold, and molded to obtain a bending strength of 14 days. The compression strength was measured. Table 4 shows the mixing ratio of the material of the concrete body and the measurement result.

[0016]

[Table 4]

As shown in Table 4, in the concrete body in which the sewage sludge incineration ash and the wood charcoal in Example 3 are mixed, better strength can be obtained than in the case where Portland cement is mixed with bamboo charcoal. In this way, both the sewage sludge incineration ash and the wood carbon may be mixed in the concrete body.

[0018]

EFFECTS OF THE INVENTION According to the present invention, it is possible to secure the strength and to contain the sewage sludge incineration ash and the wood charcoal, and the resources can be sufficiently reused. The mixing ratio of incineration ash is 10
With 30% by weight, the incineration ash can be effectively reused, and it can be used as having the same strength as conventional concrete bodies. When the incineration ash is sewage sludge incineration ash, the sewage sludge incineration ash can be effectively reused. A mixture of wood carbide at a mixing ratio of 5 to 40% by weight can contribute to the creation of an environment and can be used as a material having an appropriate strength. The mixture of sewage sludge incineration ash and wood carbide makes it possible to reuse the sewage sludge incineration ash while contributing to the environment creation.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C04B 18:06 C04B 18:06 18:10) 18:10 B 111: 20 111: 20 (72) Inventor Shinichi Kuratomi 1-12-14-201 F-term, Najima, Higashi-ku, Fukuoka-shi, Fukuoka (reference) 4G012 PA04 PA11 PA26 PB04 PC04 PC11 PC12

Claims (5)

[Claims] 1. A concrete raw material containing alumina cement as a main raw material, silica fume in an amount of 1 to 15% by weight of the concrete raw material, and zirconia in an amount of 0.2 to 5.0% by weight of the concrete raw material, and a predetermined amount of silica sand. And the incineration ash are mixed, and the mixing ratio of the incineration ash to the whole mixture is 5 to 70% by weight, and the incineration ash mixed with water and hardened to this mixture is mixed into the concrete body. 2. A concrete raw material containing alumina cement as a main raw material, silica fume in an amount of 1 to 15% by weight of the concrete raw material, and zirconia in an amount of 0.2 to 5.0% by weight of the concrete raw material, and a predetermined amount of silica sand. And the incineration ash are mixed, and the mixing ratio of the incineration ash to the entire mixture is 10 to 30% by weight, and the incineration ash mixed with water and hardened in this mixture is mixed into the concrete body. 3. The concrete body containing the incineration ash according to claim 1 or 2, wherein the incineration ash is sewage sludge incineration ash. 4. A concrete raw material containing alumina cement as a main raw material, silica fume in an amount of 1 to 15% by weight of the concrete raw material, and zirconia in an amount of 0.2 to 5.0% by weight of the concrete raw material, and a predetermined amount of silica sand. And a wood charcoal mixture, and a mixing ratio of the wood charcoal to the whole mixture is 5 to 40% by weight, and the mixture is mixed with water to cure and harden the wood char. 5. A concrete raw material containing alumina cement as a main raw material, silica fume in an amount of 1 to 15% by weight of the concrete raw material, and zirconia in an amount of 0.2 to 5.0% by weight of the concrete raw material, and a predetermined amount of silica sand. And wood charcoal and sewage sludge incineration ash are mixed, and the mixing ratio of the sewage sludge incineration ash to the entire mixture is 5 to 30% by weight.
A concrete body containing sewage sludge incineration ash and wood carbide mixed with water, and the mixture ratio of which is 5 to 40% by weight based on the whole wood carbide mixture.