WO2018155528A1

WO2018155528A1 - Liquid-addition solidifying composition and solidified body

Info

Publication number: WO2018155528A1
Application number: PCT/JP2018/006362
Authority: WO
Inventors: 和明後藤
Original assignee: 株式会社ランド
Priority date: 2017-02-27
Filing date: 2018-02-22
Publication date: 2018-08-30
Also published as: JP6456417B2; JP2018141038A

Abstract

Provided are: a liquid-addition solidifying composition that solidifies due to the addition of liquid and can be disposed of in a similar manner to soil after solidifying; and a solidified body in which the liquid-adding solidifying composition is used. The liquid-addition solidifying composition solidifies due to the addition of liquid, and has a paper sludge ash and clinker ash. The liquid-addition solidifying composition may further have a clay tile chamotte. The grain diameter of the paper sludge ash may be 1 mm or less, the grain diameter of the clinker ash may be 3 mm or less, and the grain diameter of the clay tile chamotte may be 3 mm or less. The solidified body is in a state in which the liquid-addition solidifying composition is solidified due to the addition of a liquid.

Description

Liquid-solidified composition and solidified body

The present invention relates to a liquid-solidified composition and a solidified body, and more particularly to a liquid-solidified composition that solidifies by liquid addition, and a solidified body obtained by solidifying the liquid-solidified composition by liquid addition.

Conventionally, for example, it is known that a composition in which a binder such as cement is mixed with natural soil or natural sand has a property of solidifying by water. The solidified product obtained by solidifying the composition by water has a natural feeling due to the natural texture of soil and sand, and is used for, for example, paving materials.

In addition, in prior patent document 1, dry sand sand and river sand are used as natural soil, and the base material is a mixture of raw soil mixed with garbage molten slag. And hydrolyzed pavement material having a property of solidifying by addition of water.

JP 2011-153060 A

However, conventional compositions are mainly made of natural soil or natural sand (hereinafter sometimes referred to as “natural soil”) having a relatively large specific gravity. Therefore, the conventional composition tends to be heavy, and is inferior in bagging and on-site workability and transportability. In general, natural soil and the like are collected in a state containing a large amount of moisture, so that drying is essential before cement is added. Therefore, the production of a conventional composition requires a large-scale drying facility for drying natural soil or the like. Also, much energy is consumed for drying. Moreover, since the conventional composition solidified by hydration uses cement, there is a possibility that soil pollutants such as hexavalent chromium may come out, and it is difficult to dispose in the same manner as the soil (in each case, If a component test related to soil contamination is conducted and safety cannot be confirmed, it cannot be disposed of.) In addition, the conventional composition cannot obtain the required solidified state unless cement, which is a good soil solidifying material, is used.

The present invention has been made in view of the above-described background, and is a liquid-solidified composition that is lightweight, solidified by liquid addition, and can be discarded in the same manner as soil after solidification, and a solidified body using the composition Is to provide.

One aspect of the present invention is a liquid-solidified composition that solidifies by liquid addition,
Paper sludge ash,
And a clinker ash.

Another aspect of the present invention resides in a solidified body in which the above liquid-solidified composition is solidified by liquid addition.

The liquid-solidified composition has the above-described configuration and does not use natural soil or the like as the main raw material. Paper sludge ash and clinker ash both have a lower specific gravity than natural soil. Therefore, the liquid-added solidified composition can be reduced in weight as compared with conventional compositions. Moreover, since both paper sludge ash and clinker ash are produced by baking at a high temperature, they are easily obtained in a dry state or a low water content. Therefore, the above-mentioned liquid-solidified composition does not require a large drying facility at the time of production, and wasteful energy consumption for drying can be suppressed. Moreover, since paper sludge ash and clinker ash are porous, they have high liquid absorbency, and paper sludge ash in contact with the liquid functions as a binder to harden the clinker ash as an aggregate. Therefore, the liquid-added solidified composition can be solidified by liquid addition. In addition, it is possible to obtain paper sludge ash that meets the environmental standards related to soil contamination. Even when paper sludge ash contains soil pollutants, the amount of paper sludge ash is small compared to cement, etc. When the liquefied solidified composition is solidified by liquefaction, the soil contaminants are easily insolubilized. Clinker ash also meets environmental standards for soil contamination. Therefore, the solidified body solidified by liquid addition of the above liquid-solidified composition can satisfy the environmental standards related to soil contamination as a whole and can be discarded in the same manner as soil.

The solidified body is light, solidified by liquid addition, and after solidification, the liquid solidification composition that can be discarded in the same manner as soil is solidified by liquid addition. Therefore, the solidified body is lighter, has a liquid absorbing property and a liquid retaining property, and can be discarded in the same manner as the soil, compared with a solidified body by a conventional composition.

The liquid-solidified composition has a property of solidifying by liquid addition. Specifically, the liquid-added solidified composition can be solidified by adding at least water. The solidification mentioned above includes semi-solidification.

The liquid addition solidified composition contains at least paper sludge ash (hereinafter sometimes referred to as PS ash) and clinker ash.

As PS ash, specifically, among those produced by dewatering and reducing the volume of papermaking sludge generated in the used paper recycling process and papermaking process, fine particles in a dry state may be used. it can. PS ash that is in the form of fine particles and is in a dry state can be particularly preferably used because it is easily mixed uniformly with other components and has a strong binding force as a binder. As the PS ash, one that satisfies the environmental standards related to soil contamination is preferably used from the viewpoint that the above-mentioned liquid-solidified composition after solidified by liquid addition easily satisfies the environmental standards related to soil contamination. Good. The environmental standards related to soil contamination mentioned above are environmental standards related to soil contamination (Environment Agency Notification No. 46) based on the provisions of Article 16, Paragraph 1 of the Environmental Basic Act (1993 Law No. 91). The analysis object is cadmium, lead, hexavalent chromium, arsenic, total mercury, selenium, fluorine, boron, etc. (hereinafter the same).

As clinker ash, concretely, coal ash particles produced by coal burning in thermal power plants, etc. are aggregated together, and a porous lump is crushed into sand, etc. Can be used. The clinker ash is preferably one that satisfies the environmental standards related to soil contamination, from the viewpoint that the above-mentioned liquid-solidified composition after solidification by liquid addition easily satisfies the environmental standards related to soil contamination. Good.

The liquid-added solidified composition can contain clay tile chamotte in addition to PS ash and clinker ash. According to this structure, it becomes easy to adjust the intensity | strength of the solidified body which the said liquid addition solidified composition solidified by the liquid addition. PS ash is usually white, and clinker ash is usually black. Therefore, when a liquid-solidified composition mainly composed of two components of PS ash and clinker ash is solidified by liquid addition, a solidified body having a gray color tone is often obtained. According to the said structure, it becomes easy to color the color tone of a solidified body into tea type | system | group colors, such as light brown and red brown close | similar to natural soil, by selecting the clay tile chamotte of a tea type | system | group, for example. Therefore, according to the said structure, the liquid addition solidification composition easy to utilize for the pavement material etc. in which the texture close | similar to natural soil is liked is obtained. Moreover, clay tile chamotte has a higher specific gravity than PS ash and clinker ash. Therefore, according to this structure, it becomes easy to adjust the specific gravity of the said liquid addition solidified composition and the said solidified body.

Other than the above, the liquid-solidified composition can contain, for example, lime, calcined magnesia, ceramic waste killer, etc., if necessary. These are effective for improving the solidification rate of the liquid-solidified composition and improving the compressive strength of the solidified body obtained by solidifying the liquid-solidified composition.

In the above liquid-solidified composition, the particle size of PS ash can be 1 mm or less, and the particle size of clinker ash can be 3 mm or less. According to this structure, it becomes easy to improve the intensity | strength of the solidified body which the said liquid addition solidified composition solidified by the addition. Further, it becomes difficult to form large protrusions due to the clinker ash having a large particle diameter on the surface of the solidified body, the surface state of the solidified body is improved, and the protrusions are not easily removed. In addition, even when the blending amount of clinker ash having a relatively small specific gravity is increased, the clinker ash is easily mixed uniformly, and the phenomenon that the clinker ash is lifted off on the surface of the solidified body is easily suppressed. Moreover, when using the said liquid-solidification composition as a liquid absorber so that it may mention later, it becomes easy to mix with a to-be-processed object uniformly.

In the liquid-solidified composition, the particle size of the clay tile chamotte can be 3 mm or less. According to this structure, it becomes easy to improve the intensity | strength of the solidified body which the said liquid addition solidified composition solidified by the addition. Further, it becomes difficult to form large protrusions due to the clay tile chamotte having a large particle diameter on the surface of the solidified body, the surface state of the solidified body is improved, and the protrusions are less likely to be easily removed. Moreover, when using the said liquid-solidification composition as a liquid absorber so that it may mention later, it becomes easy to mix with a to-be-processed object uniformly.

The particle size described above is a particle size measured by sieving. Therefore, the particle size of X mm or less means that all components under the X mm sieve are included.

When the said liquid addition solidification composition contains 2 components of PS ash and clinker ash, the volume ratio of PS ash can be 30% or more and 80% or less, and the volume ratio of clinker ash can be 20% or more and 70% or less ( Hereinafter, it may be referred to as a first blending configuration). According to the 1st compounding composition, it becomes easy to make the uniaxial compressive strength of the solidification object solidified by addition of the above-mentioned liquid solidification composition 1N / mm < ² > or more. Moreover, it becomes easy to adjust the color tone of the solidified body to a gray to dark gray color tone similar to the texture of natural sand.

From the viewpoint of improving the uniaxial compressive strength of the solidified body, the volume ratio of PS ash in the first composition is preferably 35% or more, more preferably 40% or more, and still more preferably 45% or more. be able to. The volume ratio of PS ash in the first blending structure is preferably 65 from the viewpoint of securing clinker ash and easily adjusting the color tone of the solidified body to a gray to dark gray color tone similar to the texture of natural sand. % Or less, more preferably 60% or less, and still more preferably 55% or less. The volume ratio of the clinker ash in the first composition is preferably 25% or more from the viewpoint of easy adjustment of the color tone of the solidified body to a gray to dark gray color tone resembling the texture of natural sand. More preferably, it can be 30% or more, and more preferably 35% or more. The volume ratio of clinker ash in the first composition is preferably 65% or less, more preferably 60% or less, and still more preferably, from the viewpoint of securing PS ash, improving the uniaxial compressive strength of the solidified body, and the like. It can be 55% or less.

When the liquid-solidified composition contains three components of PS ash, clinker ash, and clay tile chamotte, the volume ratio of PS ash is 30% to 80%, the volume ratio of clinker ash is 10% to 60%, clay The volume ratio of the tile chamotte can be 10% or more and 60% or less (hereinafter sometimes referred to as a second blending configuration). According to the 2nd compounding composition, it becomes easy to make uniaxial compressive strength of the solidification object which the above-mentioned liquid solidification composition solidified by liquid addition 1 N / mm ² or more. In addition, it becomes easy to adjust the color tone of the solidified body to a gray color similar to the texture of natural soil, or to a brown color tone such as light brown, brown, dark brown, and reddish brown.

From the viewpoint of improving the uniaxial compressive strength of the solidified body, the volume ratio of PS ash in the second composition is preferably 35% or more, more preferably 40% or more, and still more preferably 45% or more. be able to. The volume ratio of PS ash in the second blending composition is from the viewpoint of securing clinker ash, clay tile chamotte, and easy to adjust the color of solidified body to gray or brown color similar to the texture of natural soil. Preferably, it may be 75% or less, more preferably 70% or less, and still more preferably 65% or less. Further, the volume ratio of clinker ash in the second composition is preferably 15% or more, more preferably 20% or more, and further preferably 25% or more from the viewpoint of improving the uniaxial compressive strength of the solidified body. It can be. The volume ratio of clinker ash in the second composition is preferably 55% or less, more preferably 50% or less, and still more preferably 45% or less, from the viewpoint of securing PS ash, clay tile chamotte, and the like. be able to. In addition, the volume ratio of the clay tile chamotte in the second composition is preferably 15% or more, from the viewpoint of easy adjustment of the color tone of the solidified body to a brown color tone similar to the texture of natural soil. More preferably, it can be 20% or more, and more preferably 25% or more. From the viewpoint of securing PS ash, clinker ash, etc., the volume ratio of the clay tile chamotte in the second composition is preferably 55% or less, more preferably 50% or less, and even more preferably 45% or less. be able to.

Since the 1st compounding composition and the 2nd compounding composition are excellent in the balance of uniaxial compressive strength of a solidification object, and the color tone adjustment nature of a solidification object, it can be used conveniently as a paving material. When the uniaxial compressive strength of the solidified body is 1 N / mm ² or more, it is suitable as a pavement material such as a promenade or a garden road. Further, when the uniaxial compressive strength of the solidified body is 2N / mm ² or more is preferable as such paving materials for weed prevention with weeds preventing effect.

When the said liquid addition solidification composition contains 2 components of PS ash and clinker ash, the volume ratio of PS ash can also be 10% or more and 30% or less, and the volume ratio of clinker ash can also be 70% or more and 90% or less ( Hereinafter, it may be referred to as a third blending configuration). According to the 3rd compounding composition, it becomes easy to improve the liquid absorbency of the above-mentioned liquid addition solidification composition. Moreover, when the said liquid addition solidified composition is solidified by liquid addition, a solidified body does not become hard too much and it becomes easy to ensure moderate grindability. Moreover, the weight of the liquid-added solidified composition is easily reduced.

The volume ratio of PS ash in the third blending structure is preferably 12% or more, more preferably 15% or more, from the viewpoint of improving the liquid absorbability of the liquefied solidified composition. The volume ratio of PS ash in the third blending configuration is preferably 28% or less, and more preferably 25% or less, from the viewpoints of securing clinker ash and improving the pulverizability of the solidified body. Moreover, the volume ratio of the clinker ash in the third blending configuration is preferably 72% or more, more preferably 75% or more, from the viewpoint of improving the pulverization property of the solidified body. The volume ratio of the clinker ash in the third blending configuration is preferably 88% or less, more preferably 85% or less, from the viewpoints of securing PS ash and improving the liquid absorbability of the liquid-solidified composition. be able to.

When the liquid-solidified composition contains three components of PS ash, clinker ash, and clay tile chamotte, the volume ratio of PS ash is 10% to 30%, the volume ratio of clinker ash is 20% to 80%, clay The volume ratio of the tile chamotte may be 10% or more and 50% or less (hereinafter sometimes referred to as a fourth blending configuration). According to the 4th compounding composition, it becomes easy to improve the liquid absorbency of the above-mentioned liquid addition solidification composition. Moreover, when the said liquid addition solidified composition is solidified by liquid addition, a solidified body does not become hard too much and it becomes easy to ensure moderate grindability. Moreover, the weight of the liquid-added solidified composition is easily reduced.

The volume ratio of PS ash in the fourth blending configuration is preferably 15% or more from the viewpoint of improving the liquid absorbability of the liquefied solidified composition. The volume ratio of PS ash in the fourth blending configuration is preferably 25% or less from the viewpoint of securing clinker ash, securing clay tile chamotte, improving the pulverization property of the solidified body, and the like. Further, the volume ratio of the clinker ash in the fourth blending configuration is preferably 25% or more, more preferably 30% or more, and still more preferably 35% or more, from the viewpoint of improving the grindability of the solidified body. be able to. The volume ratio of the clinker ash in the fourth composition is preferably 75% or less, more preferably from the viewpoints of securing PS ash, securing clay tile chamotte, improving liquid absorbency of the liquid-added solidified composition, and the like. 70% or less, and more preferably 65% or less. In addition, the volume ratio of the clay tile chamotte in the fourth composition is preferably 15% or more, more preferably 20% or more, and still more preferably 25% or more, from the viewpoint of improving the density of the solidified body. be able to. The volume ratio of the clay tile chamotte in the fourth blending composition is preferably 45% or less, more preferably 40%, from the viewpoint of facilitating weight reduction of the liquid-added solidified composition and the solidified body. It can be as follows.

The third compounding composition and the fourth compounding composition are excellent in the balance between the liquid absorbability of the liquid-added solidified composition, the pulverization property of the solidified product, and the weight reduction, and therefore can be suitably used as a soil covering material. In this case, after the clay is absorbed and solidified, it can be easily pulverized at the time of disposal of the clay, so that a clay with excellent functionality and disposability can be obtained. In addition, because the specific gravity of the components used in the above liquid-solidified composition is small, it is lighter than conventional sandbags using natural soil, etc., and workability when loading sandbags, work during sandbag removal / disposal A sandbag with excellent properties can be obtained.

When the said liquid addition solidification composition contains 2 components of PS ash and clinker ash, the volume ratio of PS ash can also be 10% or more and 90% or less, and the volume ratio of clinker ash can also be 10% or more and 90% or less ( Hereinafter, it may be referred to as a fifth blending configuration). According to the 5th compounding composition, it becomes easy to secure the liquid absorbency of the above-mentioned liquid addition solidification composition. Moreover, since it becomes easy to improve the scattering resistance of the said liquid-solidified composition compared with PS ash simple substance, it becomes easy to spray the said liquid-solidified composition by hand. Moreover, the weight of the liquid-added solidified composition is easily reduced.

The volume ratio of PS ash in the fifth blending composition is preferably 15% or more, more preferably 20% or more, and still more preferably 25%, from the viewpoint of improving the liquid absorbability of the liquid-solidified composition. This can be done. The volume ratio of PS ash in the fifth blending structure is preferably 85% or less, more preferably 80% or less, from the viewpoint of securing clinker ash and improving the splash resistance of the liquid-solidified composition. Preferably, it can be 75% or less. Further, the volume ratio of the clinker ash in the fifth blending composition is preferably 15% or more, more preferably 20% or more, and still more preferably, from the viewpoint of improving the splash resistance of the liquid-solidified composition. It can be 25% or more. The volume ratio of clinker ash in the fifth blending composition is preferably 85% or less, more preferably 80% or less, more preferably from the viewpoint of securing PS ash, improving liquid absorbency of the liquid-solidified composition, and the like. Preferably, it can be 75% or less.

When the liquid-solidified composition contains three components of PS ash, clinker ash, and clay tile chamotte, the volume ratio of PS ash is 10% to 90%, the volume ratio of clinker ash is 10% to 80%, clay The volume ratio of the tile chamotte may be 10% or more and 50% or less (hereinafter sometimes referred to as a sixth blending configuration). According to the 6th compounding composition, it becomes easy to ensure the liquid absorbency of the above-mentioned liquid addition solidification composition. Moreover, since it becomes easy to improve the scattering resistance of the said liquid-solidified composition compared with PS ash single-piece | unit, it becomes easy to spray the said liquid-solidified composition. Moreover, the weight of the liquid-added solidified composition is easily reduced.

The volume ratio of PS ash in the sixth blending composition is preferably 15% or more, more preferably 20% or more, and still more preferably 25%, from the viewpoint of improving the liquid absorbability of the liquid-solidified composition. This can be done. The volume ratio of PS ash in the sixth blending composition is preferably 85% or less, more preferably 80%, from the viewpoints of securing clinker ash, clay tile chamotte, and improvement in scattering resistance of the liquid-solidified composition. % Or less, and more preferably 75% or less. Further, the volume ratio of the clinker ash in the sixth blending structure is preferably 15% or more, more preferably 20% or more, and still more preferably, from the viewpoint of improving the splash resistance of the liquid-solidified composition. It can be 25% or more. The volume ratio of clinker ash in the sixth blending composition is preferably 75% from the viewpoint of securing PS ash, clay tile chamotte, facilitating weight reduction of the liquid-added solidified composition, and solidified body. In the following, it can be more preferably 70% or less, and still more preferably 65% or less. Further, the volume ratio of the clay tile chamotte in the sixth composition is preferably 15% or more, more preferably 20% or more, and still more preferably, from the viewpoint of improving the splash resistance of the liquid-solidified composition. , 25% or more. Further, the volume ratio of the clay tile chamotte in the sixth composition is preferably 15% or more, more preferably 20% or more, and further preferably 25% or more from the viewpoint of improving the pulverization property of the solidified body. can do. The volume ratio of the clay tile chamotte in the sixth blending structure is preferably 45 from the viewpoints of securing PS ash, clay tile chamotte, facilitating weight reduction of the liquid-added solidified composition, and solidified body, and the like. % Or less, more preferably 40% or less, and still more preferably 35% or less.

The fifth blending configuration and the sixth blending configuration can be suitably used as a liquid absorbent material that is brought into contact with the object to be processed and absorbs the liquid. According to the liquid absorbent material, for example, the fluidity of the object to be processed can be lowered by contacting the object to be processed containing solid content and liquid and absorbing the liquid contained in the object to be processed. And the mixture in which the to-be-processed object and the solid body which absorbed the liquid were mixed can be discarded like soil. Moreover, according to the said liquid absorber, after making it contact with the to-be-processed object which consists of a liquid and absorbing a liquid, it becomes a solidified body. And this solidified body can be discarded like soil. Moreover, according to the said liquid absorbent material, since it is hard to disperse | distribute and it is lightweight, it is excellent in the dispersibility with respect to a to-be-processed object, and can improve the process workability | operativity of a to-be-processed object. Needless to say, in any of the above-described objects to be processed, if the object to be processed itself does not satisfy the environmental standards related to soil contamination, it cannot be disposed of in the same manner as soil. Examples of the object to be treated include animal excrement, blood, sludge, paint, oil, gasoline, solvent and the like. In the case where the object to be treated is animal manure, bactericidal properties due to the alkaline action of PS ash, deodorizing effect due to having porous components, and the like can be expected.

In the first to sixth blending configurations, the volume ratios of PS ash, clinker ash, and clay tile chamotte are within the range of the volume ratios described above so that the total volume ratio is 100%. You can choose.

From the viewpoint of weight reduction, the specific gravity of the liquid-solidified composition is preferably 1.20 or less, more preferably 1.17 or less, still more preferably 1.10 or less, and even more preferably, in a dry state. 1.00 or less, and even more preferably 0.98 or less. In addition, the specific gravity of the liquid-solidified composition is preferably 0.75 or more, more preferably 0.80 or more, and still more preferably, in a dry state from the viewpoint of dispersibility during addition, uniform mixing, and the like. 0.85 or more. In addition, the standard substance of the specific gravity is water at 4 ° C.

In addition, each structure mentioned above can be arbitrarily combined as needed, in order to obtain each effect mentioned above.

Hereinafter, the liquid-solidified composition and the solidified body will be described more specifically using experimental examples.

<Experimental example 1>
The following components were prepared.
-Binder-
・ PS ash (produced by Nippon Paper Industries Co., Ltd.) (particle size 1 m or less, specific gravity 0.7)
The PS ash is in units of mg / L, cadmium and its compound: less than 0.001, lead and its compound: 0.007, hexavalent chromium compound: 0.015, arsenic and its compound: less than 0.005, Mercury and its compounds: less than 0.0005, selenium and its compounds: less than 0.005, fluorine and its compounds: 0.6, boron and its compounds: less than 0.1, environmental standards for soil contamination (environment Meets Agency Notification No. 46).
・ Cement (manufactured by Sumitomo Osaka Cement, “Normal Portland Cement”)
-aggregate-
・ Clinker ash (produced by Chubu Electric Power Company Shonan Thermal Power Plant) (Adjusted to a particle size of 3 mm or less by sieve, specific gravity 1.0)
The above clinker ash is in units of mg / L, cadmium: less than 0.001, lead: less than 0.005, hexavalent chromium: less than 0.01, arsenic: 0.009, total mercury: less than 0.0005, selenium : Less than 0.002, Fluorine: Less than 0.05, Boron: 0.13, which meets the environmental standards for soil contamination (Environment Agency Notification No. 46).
・ Natural soil (dried)
・ Clay tile chamotte (Aichi Prefectural Pottery Tile Industry Association, Sanshu Tile Chamotte) (Adjusted to a particle size of 3 mm or less by sieve, specific gravity 1.4)
The clay tile chamotte is in units of mg / L, cadmium: less than 0.001, lead: less than 0.005, hexavalent chromium: less than 0.01, arsenic: less than 0.005, total mercury: less than 0.0005 Selenium: Less than 0.002, Fluorine: 0.09, Boron: Less than 0.02, which meets the environmental standards related to soil contamination (Environment Agency Notification No. 46).

The composition of each sample was obtained by dry-mixing each component until it became uniform by the combination and the mixture ratio (volume%) of the component shown in Table 1.

The composition of each sample obtained was evaluated for weight, solidification by water, and disposal properties similar to soil. In the weight evaluation, when the composition of Sample 1-3 is used as a reference, the case where the specific gravity is lighter than that of the composition is “◯”, and the case where the specific gravity is equal to or higher than that of the composition. Was marked “x”. Moreover, the solidification property by water was set to "(circle)" when water was sprayed with respect to the composition and solidified, and it was set to "x" when not solidified. As for soil disposal, “○” indicates that the composition and solidified product meet the environmental standards for soil contamination, and the composition and solidified product do not meet or do not meet the environmental standards for soil contamination. If there is a possibility that it cannot be disposed of without confirmation of safety, it was marked as “x”. Table 1 shows details of the composition and evaluation results.

As shown in Table 1, although the compositions of Sample 1-3 and Sample 1-4 have solidification properties due to water, they are mainly composed of natural soil or natural sand having a relatively high specific gravity (specific gravity of about 1.7). Because it is used as a raw material, it is heavy. In this experimental example, dried natural soil or the like is used, but actually, a large-scale drying facility for drying the natural soil or the like is required, and much energy is consumed for drying. In addition, since the solidified products of the compositions of Sample 1-3 and Sample 1-4 use cement, there is a risk that soil pollutants such as hexavalent chromium may be emitted, and it is difficult to dispose of in the same way as soil. It is necessary to confirm safety. In addition, the solidified bodies of the compositions of Sample 1-3 and Sample 1-4 cannot obtain the required solidified state unless cement or a binder using cement is used.

On the other hand, the compositions of Sample 1-1 and Sample 1-2 have the above-described configuration, and natural soil or the like is not used as the main raw material. Both PS ash and clinker ash have a lower specific gravity than natural soil. Therefore, the compositions of Sample 1-1 and Sample 1-2 can be reduced in weight compared to the compositions of Sample 1-3 and Sample 1-4. Moreover, since PS ash and clinker ash are both baked at a high temperature, they are easily obtained in a dry state or a low water content. Therefore, the compositions of Sample 1-1 and Sample 1-2 do not require a large drying facility at the time of production, and wasteful energy consumption for drying can be suppressed. In addition, since PS ash and clinker ash are porous, they have high liquid absorbency, and PS ash in contact with the liquid functions as a binder to harden the clinker ash as an aggregate. Therefore, the compositions of Sample 1-1 and Sample 1-2 can be solidified by liquid addition. Since PS ash, clinker ash, and clay tile chamotte do not contain soil pollutants, the solidified products obtained by the solidification of the compositions of Sample 1-1 and Sample 1-2 as a whole are environment related to soil contamination. It can meet the standards and can be disposed of in the same way as soil.

<Experimental example 2>
PS ash (produced by Nippon Paper Industries Co., Ltd.) (particle size of 1 m or less) was prepared. Further, the same clinker ash (produced by Chubu Electric Power Company, Shonan Thermal Power Plant) was classified using a sieve and adjusted to a particle size of 5 to 3 mm, a particle size of 5 mm or less, a particle size of 3 mm or less, and a particle size of 1 mm or less. In addition, using the sieve, the same clay tile chamotte as above (classified by Aichi Prefecture Ceramic Tile Industry Association, Sanshu tile chamotte) is classified, and the particle size is 5 mm or less, the particle size is 5 to 2 mm, the particle size is 3 to 2 mm, and the particle size is 3 mm. The following adjustments were made.

PS ash and clinker ash having a predetermined particle diameter were mixed by dry mixing at a volume ratio of 50:50 until uniform. Similarly, PS ash and a predetermined clay tile chamotte were dry mixed at a volume ratio of 50:50 until uniform. Next, the obtained mixture was filled in a polyvinyl chloride tube, and 50% of water of 4 ° C. was added to the volume of the mixture to solidify to obtain a columnar solidified body having a diameter of 10 cm and a height of 6 cm. Next, the obtained solidified body was air-dried at 15 to 20 ° C. for 14 days.

The strength of the solidified body was evaluated. That is, a uniaxial compression load was applied to the solidified body using a uniaxial compression tester, and the fracture behavior of the solidified body was investigated. The case where the solidified body did not crack with a compressive load of ² N / mm ² was “O”, and the solidified body was not cracked with a compressive load of 1 N / mm ² , but the solidified body was cracked with a compressive load of ² N / mm ² Was “C”, and the case where the solidified body was broken by a load of 1 N / mm ² was designated as “x”.

Also, 60% by volume of water was added to the above dry-mixed mixture, and the mixture was further mixed, and this was spread on a flat surface with a wooden trowel so that the thickness was 3 cm. And the surface state of the solidified body after 1 hour passage was observed. Clinker ash or clay tile chamotte is evenly distributed in the solidified body, and it has a flat finish with almost no large protrusions, and even if touched by hand, it is not easy to remove clinker ash or clay tile chamotte “○” was given for the case. In addition, a case where protrusions caused by clinker ash or clay tile chamotte that can be easily removed by hand are formed on the surface of the solidified body is indicated by “Δ”. In addition, the case where the clinker ash or clay tile chamotte protruded in a state of floating on the surface of the solidified body was defined as “x”. The results are summarized in Table 2 and Table 3.

According to Tables 2 and 3, it is easy to improve the strength of the solidified body by setting the particle size of PS ash to 1 mm or less, the particle size of clinker ash to 3 mm or less, and the particle size of clay tile chamotte to 3 mm or less. I understand that. In addition, by setting the particle size within the above range, it becomes difficult to form large protrusions due to clinker ash having a large particle diameter on the surface of the solidified body, the surface state of the solidified body is improved, and the protrusions can be easily removed. It turns out that it doesn't disappear.

<Experimental example 3>
In order to investigate the applicability of the liquid-solidified composition to paving materials, the following experiment was conducted.

PS ash (produced by Nippon Paper Industries Co., Ltd.) (particle size: 1 m or less), Clinker Ash (produced by Chubu Electric Power Company, Shonan Thermal Power Plant) (particle size: 3 mm or less) , Sanshu Tile Chamotte) (particle size of 3 mm or less).

The composition of each sample was obtained by dry-mixing each component until it became uniform by the combination and the mixture ratio (volume%) of the component shown in Table 4. Next, the obtained composition was filled in a polyvinyl chloride tube, and 50% of water was added to the volume of the composition to solidify, thereby obtaining a columnar solidified body having a diameter of 10 cm and a height of 6 cm. Next, the obtained solidified body was air-dried at 15 to 20 ° C. for 14 days.

The strength of the solidified body was evaluated. That is, a uniaxial compression load was applied to the solidified body by a uniaxial compression tester, and the uniaxial compression strength was measured. Where uniaxial compressive strength was 2N / mm ² or more "○", the case where the uniaxial compressive strength was less than ² or less 1N / mm ² or more 2N / mm "△", uniaxial compressive strength 1N / mm ² The case where it was as follows was designated as “x”.

Moreover, the color tone of the obtained solidified body was confirmed visually. Table 4 summarizes the details of the composition and the evaluation results of the solidified product.

According to Table 4, when the composition contains two components of PS ash and clinker ash (Sample 3-1 to Sample 3-8), the volume ratio of PS ash is 30% to 80% and the volume ratio of clinker ash. 20% to 70%, it is easy to make the uniaxial compressive strength of the solidified body 1N / mm ² or more, and the color tone of the solidified body is adjusted to a gray to dark gray color tone similar to the texture of natural sand It was confirmed that it became easy to do. Similarly, when the composition contains three components of PS ash, clinker ash, and clay tile chamotte (Sample 3-9 to Sample 3-33), the volume ratio of PS ash is 30% to 80%, and the volume of clinker ash. By making the ratio 10% or more and 60% or less and the volume ratio of clay tile chamotte 10% or more and 60% or less, the uniaxial compressive strength of the solidified body can be easily set to 1 N / mm ² or more, and the color tone of the solidified body It was confirmed that it would be easy to adjust the color tone to a brown color such as gray, which is similar to the texture of natural soil, or light brown, brown, dark brown, or reddish brown.

<Experimental example 4>
The following experiment was conducted in order to investigate the applicability of the liquid-solidified composition to clay.

The composition of each sample was obtained by dry-mixing each component until it became uniform with the combination and mixing ratio (volume%) of the components shown in Table 5. 1 L of water was added to 1.7 L of the obtained composition, and the water absorption rate was measured. In addition, when the composition absorbs all 1 L of water, the water absorption rate becomes 100%.

Further, the obtained composition was filled in a polyvinyl chloride tube and solidified by adding 0.25 L of water to obtain a cylindrical solid body having a diameter of 10 cm and a height of 6 cm. Next, the obtained solidified body was air-dried at 15 to 20 ° C. for 14 days.

The grindability of the above solidified body was evaluated. That is, the cracking method was confirmed when the solidified body was dropped from a height of 1 m onto the concrete surface. When the solidified body was pulverized as a whole, the solidified body did not become too hard, and it was evaluated as “◯” as having an appropriate pulverization property. When it was not pulverized at all or cracked by several large lumps, the solidified body became too hard, so that it was inferior to the pulverizability, and was marked “x”.

Moreover, the weight was evaluated about the obtained composition. When the specific gravity of the composition in the dry mixed state was 1.17 or less, “◯” was given, and when the specific gravity of the composition was 1.18 to 1.25, “△” was given. Table 5 summarizes the details of the composition, the composition, and the evaluation results of the solidified body.

According to Table 5, when the composition contains two components of PS ash and clinker ash, the volume ratio of PS ash is 10% to 30%, and the volume ratio of clinker ash is 70% to 90%. It turns out that it becomes easy to improve the liquid absorptivity of a composition. It can also be seen that when the composition is solidified by liquid addition, the solidified body does not become too hard and it is easy to ensure appropriate pulverization. It can also be seen that the weight of the composition is easily reduced. Further, when the composition contains three components of PS ash, clinker ash, and clay roof chamotte, the volume ratio of PS ash is 10% to 30%, the volume ratio of clinker ash is 20% to 80%, and the clay roof chamotte It was confirmed that the same effect as described above can be obtained by setting the volume ratio to 10% to 50%.

<Experimental example 5>
In order to investigate the applicability of the liquid-solidified composition to the liquid absorbent material, the following experiment was conducted.

The composition of each sample was obtained by dry-mixing each component until it became uniform with the combination and the mixing ratio (volume%) of the components shown in Table 6. 1 L of water was added to 1.7 L of the obtained composition, and the water absorption rate was measured. In addition, when the composition absorbs all 1 L of water, the water absorption rate becomes 100%.

Moreover, the obtained composition was sprayed on the ground, and the scattering state was confirmed. The case where it was less likely to scatter than PS ash alone was designated as “◯”, and the case where it was as scatter as PS ash alone was designated as “X”.

Moreover, the weight was evaluated about the obtained composition. When the specific gravity of the composition was 1.17 or less, “◯” was given, and when the specific gravity of the composition was 1.18 or more, “X” was given. Table 6 summarizes the details of the compositions and the evaluation results.

According to Table 6, when the composition contains two components of PS ash and clinker ash, the volume ratio of PS ash is 10% to 90%, and the volume ratio of clinker ash is 10% to 90%. It can be seen that the liquid absorbency of the composition is easily secured. Moreover, since it becomes easy to improve the scattering resistance of a composition compared with PS ash single-piece | unit, it turns out that it becomes easy to spread a composition by hand. It can also be seen that the weight of the composition is easily reduced.

Further, when the composition contains three components of PS ash, clinker ash and clay roof chamotte, the volume ratio of PS ash is 10% to 90%, the volume ratio of clinker ash is 10% to 80%, and the clay roof chamotte. It was confirmed that the same effect as described above can be obtained by setting the volume ratio to 10% to 50%.

Although the embodiments and examples of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments and examples, and various modifications can be made without departing from the spirit of the present invention. is there.

Claims

A liquid-solidified composition that solidifies by liquid addition,
Paper sludge ash,
A liquefied solidified composition comprising clinker ash.
The paper sludge ash has a particle size of 1 mm or less,
The liquid-solidified composition according to claim 1, wherein the clinker ash has a particle size of 3 mm or less.
Furthermore, the liquid-solidification composition of Claim 1 or 2 which has clay tile chamotte.
The liquefied solidified composition according to claim 3, wherein the clay tile chamotte has a particle size of 3 mm or less.
The volume ratio of the paper sludge ash is 30% to 80%,
The liquid addition solidification composition of Claim 1 or 2 whose volume ratio of the said clinker ash is 20% or more and 70% or less.
The volume ratio of the paper sludge ash is 30% to 80%,
The volume ratio of the clinker ash is 10% or more and 60% or less,
The liquid-solidified composition according to claim 3 or 4, wherein the clay tile chamotte has a volume ratio of 10% to 60%.
The liquid-solidified composition according to claim 5 or 6, which is used as a paving material.
The volume ratio of the paper sludge ash is 10% to 30%,
The liquefied solidified composition according to claim 1 or 2, wherein a volume ratio of the clinker ash is in a range of 70% to 90%.
The volume ratio of the paper sludge ash is 10% to 30%,
The volume ratio of the clinker ash is 20% or more and 80% or less,
The liquid addition solidification composition of Claim 3 or 4 whose volume ratio of the said clay roof chamotte is 10% or more and 50% or less.
The liquid-solidified composition according to claim 8 or 9, which is used as an earthenware material.
The volume ratio of the paper sludge ash is 10% or more and 90% or less,
The liquid addition solidification composition of Claim 1 or 2 whose volume ratio of the said clinker ash is 10% or more and 90% or less.
The volume ratio of the paper sludge ash is 10% or more and 90% or less,
The volume ratio of the clinker ash is 10% to 80%,
The liquid addition solidification composition of Claim 3 or 4 whose volume ratio of the said clay roof chamotte is 10% or more and 50% or less.
The liquid-solidified composition according to claim 11 or 12, which is used as a liquid absorbing material that is brought into contact with an object to be treated and absorbs the liquid.
14. The liquid-solidified composition according to claim 13, wherein the object to be treated is at least one selected from the group consisting of animal manure, blood, sludge, paint, oil, gasoline, and a solvent.
15. The liquid-solidified composition according to any one of claims 1 to 14, which has a specific gravity of 1.2 or less in a dry state.
A solidified body in which the liquid-solidified composition according to any one of claims 1 to 15 is solidified by liquid addition.