JP2002201055A - Block using volcanic ash, packing solidification material and its production method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a block which is sheet formed by mixing the volcanic ash, slag and cement, and to provide a packing solidification material by mixing the volcanic ash and the cement. SOLUTION: The block consists of the volcanic ash whose compounding ratio is 5-50 wt.% and the slag whose compounding ratio is 20-60 wt.% as aggregates and the cement whose compounding ratio is 5-50 wt.%, furthermore the packing solidification material consists of kneading the materials which are the volcanic ash whose compounding ratio is 50-90 wt.% and the cement whose compounding ratio is 10-50 wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block using a volcanic ash and a solidified material, and more particularly to a landscape material block using a volcanic ash from Usuyama in Hokkaido, a filled solidified material, and a method for producing the same.

[0002]

2. Description of the Related Art Volcanic ash generated in large quantities cannot be landfilled, reused, and cannot utilize resources, and cannot be disposed of as industrial waste. For this reason, the use of volcanic ash is pressing.

[0003]

At present, there are few effective uses of accumulated volcanic ash. The present invention has been proposed to cope with this situation, and is to reuse volcanic ash. That is, an object of the present invention is to mix volcanic ash, slag generated from an iron making company, and cement and form a flat plate into a block, or to mix volcanic ash and cement to form a filled solidified material.

[0004]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a method according to a first aspect of the present invention, wherein the compounding ratio of volcanic ash is 5 to 50 wt%, the compounding ratio of aggregate including slag is 20 to 60 wt%, This block is characterized by being formed by kneading a material having a ratio of 5 to 50 wt%.

[0005] A second aspect of the present invention is a block, wherein the volcanic ash is an ejecta from Mt. Usu.

In a third aspect of the present invention, the block comprises:
The block is characterized by being used for a pavement concrete block, a concrete block in a park, a home gardening material, and a building wall material.

[0007] In a fourth embodiment of the present invention, volcanic ash is removed from 5 to 50 wt%.
20% of aggregate containing blast furnace slag generated during iron making.
This is a method for producing a block, characterized in that 6060% by weight is blended, cement is blended in a proportion of 55050% by weight, necessary moisture is added and kneaded, and the mixture is cast into a mold and molded.

[0008] A fifth aspect of the present invention is a method for producing a block, wherein the volcanic ash is an ejecta from Mt. Usu.

[0009] A sixth aspect of the present invention is a filled solidified material characterized by being constituted by kneading materials having a compounding ratio of volcanic ash of 50 to 90 wt% and a compounding ratio of cement of 10 to 50 wt%. is there.

[0010] A seventh aspect of the present invention is the filled solidified material, characterized in that the volcanic ash is ejected from Mt. Usu.

[0011] In an eighth aspect of the present invention, the cement comprises:
A filled solidified material characterized in that it is at least one selected from early-strength cement, slag-based cement, and cement-based solidified material.

[0012] A ninth aspect of the present invention is the filled solidified material characterized in that the filled solidified material is for either ready-mixed concrete or a secondary product.

[0013] A tenth embodiment of the present invention relates to a method for removing volcanic ash from 50 to 90 hours.
It is a method for producing a filled solidified material, which comprises mixing wt% and cement in an amount of 10 to 50 wt%.

An eleventh aspect of the present invention is the method for producing a solidified solid material, wherein the volcanic ash is ejected from Usu volcano.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the block material of the present invention will be described below. A block is manufactured by mixing volcanic ash, slag generated from an ironmaking company, and cement such as Portland cement with necessary water, casting the mixture into a flat plate and molding. In the block material of the present invention, the mixing ratio of volcanic ash is 5 to 50 wt%, the mixing ratio of slag as an aggregate is 20 to 60 wt%, and the mixing ratio of cement is 5 to 50 wt%.
Is kneaded.

Here, the volcanic ash used in the present invention will be described. The results of chemical analysis, X-ray diffraction, differential thermal analysis, and particle size distribution of Usu volcano ash showed that the properties were similar to clay. However, the particle size was found to be coarser than that of clay. For reference, the results of the chemical analysis are shown in Table 1 as FIG. Volcanic ash contains more SiO ₂ than blast furnace slag, is acidic and has low strength.
_{(CaOwt% / SiO 2 wt%} ) high cement, or by mixing with blast furnace slag, can have high strength material.

The mixing ratio of the volcanic ash is 10 to 50 wt%.
The reason is that if it is high, the strength is reduced, and if it is low, the effect is not obtained in terms of reuse.

Next, the aggregate will be described. Place of use,
An appropriate amount of an aggregate, a coloring agent, and the like are added according to the use and required physical properties. Gravel and sand are used for the aggregate. As a coloring agent, an inorganic pigment or an organic pigment is used.

It is desirable to use slag as the aggregate. As the slag, blast furnace slag generated from an ironmaking company is used. This slag is granulated slag obtained by rapidly cooling the molten slag by pouring it into water. Therefore, most of the particles have a particle size of 3 mm or less. The chemical composition of this blast furnace slag is shown in Table 1 as FIG.

The mixing ratio of aggregate including slag is 20 to 60 wt%
And The reason is that if the amount is high, the strength is reduced due to a decrease in the amount of cement, and if the amount is low, the strength is reduced due to the absence of the aggregate.

As the cement, general cement, for example, Portland cement can be used, but desirably, high-strength Portland cement, slag-based cement, and cement-based solidifying material are used. For reference, the composition of these components is shown in Table 2 as FIG.

The early-strength Portland cement is commercially available and is characterized by a faster setting speed than ordinary Portland cement. As the slag-based cement, for example, blast furnace slag cement can be used, and this feature is that it can be solidified even if there is organic matter or slag. The cement-based solidification material is synthesized by adding various cement components, and has the same characteristics as the slag-based cement.

The compounding ratio of the cement is 5 to 50% by weight. The reason is that if it is high, the utilization rate of volcanic ash decreases and the cost increases, and if it is low, the required strength cannot be secured.

In such a ratio, volcanic ash, slag as an aggregate, and cement and water are mixed in a predetermined ratio. Mixing is performed using a mixer, for example, a concrete mixer. Next, the kneaded raw material is poured into a casting mold prepared in advance, and after the completion of the curing reaction is confirmed, demolding is performed. The demolded product may be further cured. In the present invention, since it is cast molding, any shape can be used. In addition, since firing is not required during solidification, it is possible to reduce costs and the amount of CO ₂ generated.

The concrete block thus manufactured has a high compressive strength and can be used as a gardening product. Further, it can be used as a pavement concrete block, a concrete block in a park, a home gardening material, a building wall material and the like.

Embodiments of the solidified filler of the present invention will be described below. The filling and solidifying material is used by kneading it into a mortar and before adding water. For example, filled concrete is a filled solidified material that is used by filling a hollow portion such as a formwork concrete block or a steel pipe. In the present invention, the volcanic ash and the solidified material are mixed to form a filled solidified material. The solidified filler of the present invention has a compounding ratio of volcanic ash of 50 to 50%.
It is composed of kneaded materials with 90 wt% and a cement mixing ratio of 10 to 50 wt%.

Here, the volcanic ash used in the present invention is Usuyama volcanic ash which is the same as that used in the above-mentioned block production.
An example of the chemical analysis is shown in Table 1 as FIG. The mixing ratio of volcanic ash should be 50-90wt%. The reason for this is that if the value is high, the strength is significantly reduced, and if the value is low, the significance is reduced from the viewpoint of recycling.

As the cement, general cement, for example, Portland cement can be used, but desirably, high-strength Portland cement, slag-based cement, and cement-based solidifying material can be used. For reference, the composition of these components is shown in Table 2 as FIG.

The early-strength Portland cement is commercially available and is characterized by a faster setting speed than ordinary Portland cement. As the slag-based cement, for example, blast furnace slag cement can be used, and this feature is that it can be solidified even if there is organic matter or slag. The cement-based solidification material is synthesized by adding various cement components, and has the same characteristics as the slag-based cement.

One of these cements may be mixed with volcanic ash, or a mixture of cement and volcanic ash may be used. The compounding ratio of cement is 10 to 50 wt%. The reason is that if it is high, the utilization rate of volcanic ash decreases and the cost increases, and if it is low, the required strength cannot be secured.

The solidified filler is prepared by mixing volcanic ash and cement at a predetermined ratio. Mixing is performed using a mixer, for example, a concrete mixer. When the cement is added in a certain amount or more, the solidified filler of the present invention is in a stable state regardless of which cement is used. The amount of the solidified material can be determined from the required strength, and the mixed material can be used for ready-mixed concrete.

The molded product obtained by casting the solidified material into a mold has a high compressive strength and can be used as a gardening product. Further, concrete blocks for pavement, concrete blocks in parks, gardening materials for home use, and building walls It can be used for secondary products such as materials.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the blocks according to the present invention will be described below. Volcanic ash: Granulated slag: Early Portland cement =
The weight ratio of 45:45:10, 40:40:20, or 35:35:30 is shown in Table 3 in FIG. The mixture is weighed and charged into a concrete mixer.
Kneading is performed for a predetermined time until the mixture is uniformly mixed. Moisture is about 20
%, But is appropriately adjusted according to the weather, the weather, the water content of the raw materials, and the like.

A mold for casting is prepared using a material such as a silicon resin in advance. A release material is applied to this mold. Next, using a shaking table, casting is performed while the mold is vibrated. The vibration time is preferably about 5 to 8 minutes. The reason for this is that if the vibration time is too short, bubbles in the raw material will not be sufficiently released, and if the vibration time is too long, the aggregate will settle. After completion of the casting, curing is performed in a curing room at 50 to 60 ° C. Leave for 1-2 days. After curing, the block is removed from the mold. After demolding, cure for 2 weeks at room temperature.

Table 3 shown in FIG. 3 shows the characteristic values of the obtained concrete plate. Here, the water absorption was determined by JISR2205, and the compressive strength was determined by JISR1250. The results are shown in the graph of FIG. From this, the compounding amount of the solidified material can be determined from the required strength. When the volcanic ash is used in an amount of 35% or more, the compressive strength is 6.1 N / mm ² , so there is a strength that can be used as a gardening product. Further, this flat plate can be used as a concrete block for pavement, a concrete block in a park, a gardening material for home use, a wall material for construction, and the like. For reference, FIG. 7 shows a block example of the present invention.

Examples of the solidified filler of the present invention are shown below. The early strength Portland cement is A, the slag-based cement is B, and the cement-based solidification material is C. The compounding is performed so that the ratio of volcanic ash: cement = 90:10, 80:20, and 70:30. Regarding the blending of the raw materials, the three types are shown in Table 4 as FIG.

The properties of this formulation were confirmed as follows. The raw materials having this mixing ratio are weighed and put into a concrete mixer. Kneading is performed for a predetermined time until these raw materials are uniformly mixed. Water is added so that the water content is about 20%, but it is adjusted according to the weather, the weather, the water content of the raw materials, and the like.

Using a material such as silicon resin in advance, a casting mold is prepared. A release material is applied to this mold. Next, using a shaking table, the mold is cast while vibrating. The vibration time is preferably about 5 to 8 minutes. The reason for this is that if the vibration time is too short, bubbles in the raw material will not be sufficiently removed, and if the vibration time is too long, the raw material and moisture will be separated. After completion of the casting, after curing for one day, the mold is removed from the mold. After demolding,
Cure for 1 week at room temperature. After curing for one week, physical properties were measured.

Table 4 shown in FIG. 5 shows the characteristic values of the obtained solidified solid. Here, the water absorption was determined by JISR2205, the compressive strength was determined by JISR1250, and the bending strength was determined by JISR2213. From among these measured values, the compressive strength is shown in FIG. The slag-based cement has the highest compressive strength, but if the added amount is 30% or more, it will be in a relatively stable state regardless of which solidifying material is used. Also, the amount of the solidified material can be determined from the required strength. When the amount of volcanic ash added is 35%, the compressive strength is 6.1 N / mm ² ,
There is strength that can be used as gardening products.

[0040]

The blocks formed by kneading volcanic ash erupted from Mt. Usu, blast furnace slag material generated during iron making as aggregate, and cement have sufficient strength and other characteristics.
It can be used for pavement concrete blocks, park concrete blocks, household gardening materials, and building wall materials. In addition, volcanic ash erupted from Mt.Usu and cement, such as fast-hardening cement, slag-based cement, and cement-solidified kneaded material, have sufficient strength and other properties, and are ready-mixed concrete and secondary products. Can be used.

[Brief description of the drawings]

FIG. 1 shows constituent elements such as volcanic ash shown in Table 1 as FIG.

FIG. 2 is an example of analysis values of cement shown in Table 2 as FIG.

FIG. 3 is a blending ratio shown in Table 3 as FIG.

FIG. 4 is a diagram showing a relationship between a solidifying material mixing ratio and compressive strength.

FIG. 5 shows the blending ratio and physical properties shown in Table 4 as FIG.

FIG. 6 is a diagram illustrating a relationship between a solidifying material mixing ratio and compressive strength.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // (C04B 28/02 C04B 14:14 14:14 18:14) A 18:14) E04C 1/04 Q (72) Inventor Miwako Mori 3-1 Ohatacho, Tajimi-shi, Gifu F-term in Tokyo Ceramics Co., Ltd. (reference) 2D051 AB03 AF01 AF03 AF05 AH02 AH03 DA02 DC09 4G012 PA07 PA29

Claims (11)

[Claims] 1. A kneaded mixture of volcanic ash having a compounding ratio of 5 to 50 wt%, a slag-containing aggregate having a compounding ratio of 20 to 60 wt%, and a cement having a compounding ratio of 5 to 50 wt%. The featured block. 2. The block according to claim 1, wherein the volcanic ash is an ejecta from Mt. Usu. 3. The block according to claim 1, wherein the block is any one of a concrete block for pavement, a concrete block in a park, a gardening material for home use, and a wall material for building. 4. Mixing 5 to 50% by weight of volcanic ash, 20 to 60% by weight of aggregate including blast furnace slag generated during iron making, 5 to 50% by weight of cement, kneading by adding necessary moisture. ,
A method for producing a block, characterized by being cast into a mold and molded. 5. The method according to claim 4, wherein the volcanic ash is ejected from Mt. Usu. 6. A filled and solidified material comprising a material in which a compounding ratio of volcanic ash is 50 to 90 wt% and a cement is 10 to 50 wt%. 7. The filled solidified material according to claim 6, wherein the volcanic ash is an ejecta from Mt. Usu. 8. The filled solidified material according to claim 6, wherein the cement is at least one selected from fast-strength cement, slag-based cement, and cement-based solidified material. 9. The solidified filling material for ready-mixed concrete,
7. The filled solidified material according to claim 6, wherein the material is for a secondary product. 10. A method for producing a filled solidified material, comprising mixing 50 to 90% by weight of volcanic ash and mixing and mixing 10 to 50% by weight of cement. 11. The method according to claim 10, wherein the volcanic ash is ejected from Mt. Usu.