JP3452330B2 - Solidified material mixed with crushed stone powder and construction method using solidified material mixed with crushed stone powder - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to the use of crushed stone powder,
In particular, it relates to a solidified material containing crushed stone powder and a construction method thereof.

[0002]

2. Description of the Related Art Crushed stone and crushed sand which are aggregates for concrete and mortar are rounded so that the mortar has sufficient strength. In order to make the crushed stones have a roundness in this way, the crushed stones are put into a mixer and rubbed against each other so that protruding portions are scraped off by abrasion.
In this way, a large amount of crushed stone powder is generated in the process of rounding the crushed stone, but this crushed stone powder is of little use value at present and is currently discarded. However, there is a drawback in that disposal is costly nowadays as environmental awareness is increasing.

On the other hand, when constructing a road on a soft ground containing sludge or asphalt powder or constructing a building, the ground is first strengthened. This work is usually done by mixing a large amount of cement into the soil.In the case of a higher degree of weakness, the cement is the main component and the solidification is done by adding substances such as gypsum, blast furnace slag, calcium sulfate, and alumina ore powder. It is practiced to use agents (commonly referred to as "cement-based solidifying agents").

In addition, as the paved road is used for many years, cracks may occur on the surface of the pavement surface, and rainwater may penetrate and stay between the pavement surface and the underlayer due to the cracks. As a result, not only will the water be ejected from the cracks due to the weight of the vehicle passing through, but also the gap between the back surface of the pavement and the underlayer will expand, and a portion of the road surface may collapse. In such a case, the asphalt is directly raised from above the damaged portion for repair.

Also, structures in the soil, such as debris around a tunnel, can be washed away by groundwater over the years, creating large cavities. If this condition is left as it is, the earth and sand may suddenly fall into the cavity from above, and the tunnel itself may be destroyed. Therefore, repair is performed with an injection agent, and cement is usually used as the injection agent for the repair.

In addition, the foundation of underwater breakwaters and offshore structures,
Alternatively, when constructing artificial fishing reefs, rocks naturally produced are thrown in as discarded stones.

[0007]

Under the circumstances as described above, various attempts have been made to effectively use crushed stone powder, and as an example, a concrete pile cast in the ground for the purpose of improving soft ground. An example of a test in which crushed stone powder is mixed with the above material is shown below. Table 1 shows the uniaxial compressive strength of the specimen after 7-day curing with respect to the mixing ratio of cement and crushed stone powder.

[0008]

[Table 1]

As shown in Table 1 above, as a matter of course, the greater the cement content, the higher the strength of the specimen, but the absolute strength of each specimen obtained with the above cement / crushed stone powder ratio is insufficient. Therefore, it is necessary to further increase the amount of cement for practical use. If this method is used for general soil improvement, the cost will increase significantly.

Further, as described above, the construction method using cement or the solidifying agent containing cement as the soil improver has a drawback that the amount of cement increases and the cost disadvantage becomes large.

Further, according to the method of repairing the crack generated in the paved road by raising the asphalt, the cavity generated in the roadbed portion remains as it is, and a new crack is generated as time passes.

Further, when cement is used as a material for filling the cavities formed around the underground construction body, there is a cost disadvantage, and since the portion solidified by the cement has no water permeability, time elapses. Then, a new cavity is formed on the outer side, and there is a disadvantage that further repair is required.

Further, waste stones for forming underwater structures such as fishing reefs and levees are costly for transportation from the place of production, and are similar to the above-mentioned crushed stones in that they have a limited production amount. Development of a simple and inexpensive construction method by means has been struggled.

The present invention has been proposed in view of the above circumstances, and an object thereof is to utilize crushed stone powder produced in a crushed sand / crushed stone manufacturing process for soil improvement and various construction / civil engineering materials. It is a thing.

[0015]

In order to achieve the above object, the present invention employs the following means. That is, 100 parts by weight of cement, 10 to 50 parts by weight of limes, and sulfur.
A crushed stone powder-mixed solidification material in which crushed stone powder in an amount equal to or more than that of the solidifying agent is mixed with a solidifying agent containing 1 to 10% of aluminum acid .

In addition to the above solidifying agent, any one of the following substances can be added to the crushed stone powder-mixed solidifying material. That is, gypsum, various incinerated ash; at least one selected from volcanic ash and fly ash; and at least one selected from blast furnace slag, stainless slag, and alumina ore powder.

Furthermore, it is also desirable to add sodium carbonate as a solidification aid for the solidifying agent. Further, the crushed stone powder-mixed solidification material is mixed with a predetermined amount of soil for improvement containing sludge or asphalt powder to solidify, or the construction target space is sprinkled or filled with the crushed stone powder-mixed solidification material It is desirable to use a construction method in which the layers are sprinkled or poured or solidified using natural water.

Further, a slurry prepared by mixing a predetermined amount of cement and limes with crushed stone powder and kneading with water is used as aluminum sulfate.
It is also possible to carry out a construction method using a solidified material containing crushed stone powder that is made to inject or flow into the construction purpose space together with um . In this construction method, as the constituent material of the slurry, it is possible to add any of the substances selected from the following groups. That is, at least one of gypsum, various incineration ash, volcanic ash, and fly ash, and at least one of blast furnace slag, stainless slag, and alumina ore powder.

As another construction method, the solidified material containing crushed stone powder having the above-described structure may be housed in a water-permeable container or a packaging bag and submerged in water to form a desired solidified body in water.

[0020]

In the above, as for the mixing ratio of the solidifying agent (cement, limes, and aluminum strong acid salt) and the crushed stone powder, the strength obtained when the solidifying agent is larger than the crushed stone powder becomes higher, but the strength exceeding the construction standard is not satisfied. It is necessary and considering the cost, it is desirable that the mixing ratio of the solidifying agent and the crushed stone powder is larger than the weight ratio of 1: 1 as described above.
In this case, the mixing ratio of the crushed stone powder and the solidifying agent needs to be adjusted depending on the amount of added water or the water content of the soil to be solidified, but the weight ratio of the solidifying agent and the crushed stone powder is 1: 1 to 1:20. The amount of crushed stone powder mixed can be increased or decreased within a certain range.

The greater the amount of cement in the solidifying agent, the higher the solidifying strength can be increased. The upper limit value is not limited, but it is preferably 50% or less of the solidifying agent in view of cost.

Aluminum sulfate is suitable as the above-mentioned strong aluminum salt, but other materials such as aluminum chloride and polyaluminum chloride can be used. Further, as sodium carbonate salts, soda ash, sodium bicarbonate, etc., which are generally easily available, can be used.

As lime, either quick lime or slaked lime can be used, but slaked lime is advantageous in that it is easy to handle. The amount added is 1/10 of the amount of cement
It is about half.

Further, it is effective to add sodium carbonate when the solidifying agent contains fly ash, blast furnace slag, or stainless slag, and when the solidification target is not only crushed stone powder (sludge, solidifying soil). On the other hand, when solidifying only crushed stone powder, if sodium carbonate is mixed in, early strength may decrease.

When soda ash is used as the sodium carbonate salt and aluminum sulfate is used as the aluminum strong acid salt, the mixing ratios of the two are substantially the same, and they may be mixed in the range of 1 to 10% of the total solidifying agent. desirable. If it is less than 1%, the solidification reaction is not sufficiently promoted, and the larger the amount, the faster the solidification of the solidified body can be obtained. However, if 10% or more is compounded, the economical demerit is large against the effect (Note: In the examples, the purity of aluminum sulfate is 50.
%, The ratio of sulfuric acid band to soda ash is about 2: 1).

In the case of solidifying only crushed stone powder, the addition amount of the strong aluminum salt is less than 50% of the total solidifying agent when aluminum sulfate is used. The present invention is based on the above solidifying agent, such as at least one of gypsum, various incinerated ash, volcanic ash, and fly ash, and at least one of blast furnace slag, stainless slag, and alumina ore powder. Any of the listed substances can be used as a filler, and like the crushed stone powder, most of the substances that have been disposed of as waste can be effectively used.

The solidified material containing crushed stone powder as described above can form a solidified body having a required strength by mixing it in a predetermined amount with respect to the soil for improvement containing both sludge and asphalt powder.

Among the above-mentioned solidifying agent and solidifying aid component,
There is a use as a so-called injection material in which components other than the strong aluminum acid salt are mixed in a powder form and kneaded, and the resulting slurry is poured together with an aqueous solution of the strong aluminum acid salt into a construction target space. Therefore, the utility value will be greatly increased as paving work for roads, repair work and backfilling of underground pipes that require quick construction, and as a filling material for the space around the underground structure such as a tunnel. .

Further, the crushed stone powder-mixed solidifying material, which contains a strong aluminum salt, is rapidly solidified by contact with water. Therefore, it can be used as a substitute material for waste stone used in the installation of underwater breakwaters, marine structures, fishing reefs, etc. it can.

[0030]

【Example】

(a) Example of application to soft roads An example in which the above solidifying agent is mixed with soft soil to be used as a soil improvement material will be described in detail.

In order to obtain the strength as a pavement floor defined by the pavement test method, that is, CBR of 20%, on soft soil containing sludge having a water content of about 40%, the solidifying agent and crushed stone powder shown in Table 2 below were used. The "sulfuric acid band" described below is a product using substantially 50% pure aluminum sulfate (the same applies to other examples).

[0032]

[Table 2]

FIG. 1 shows the change in CBR value when the solidifying agents A and B shown in Table 2 were added to the soil in an amount of 10 to 30%. From this, it can be understood that the specified CBR value can be obtained with a smaller addition amount of the solidifying agent B in which crushed stone powder is mixed. The same effect can be obtained when blast furnace slag is used instead of the fly ash of the solidifying agent B, or when gypsum is further added.

(B) Example of application to soft soil It is the following experimental example that it was confirmed that only the crushed stone powder was solidified with the solidifying agent shown in Table 3 to obtain a predetermined CBR value.

[0035]

[Table 3]

The mixing ratio of the above-mentioned solidifying agent C to crushed stone powder was changed in the range of 5 to 20%, and the water-cured 30 g /
FIG. 2 shows a comparison between the case where a load of cm ² is applied and the case where no load is applied.

In the case of a load, about 18% of the solidifying agent C is enough to obtain a standard CBR value of 20%. Even with no load, the solidifying agent C is sufficient at about 22%, and it can be understood that crushed stone powder alone can be sufficiently used as a pavement subgrade.

The same effect is obtained when fly ash or blast furnace slag is added to the solidifying agent C (the amount of crushed stone powder is reduced) or when gypsum is further added. (c) Examples of application to soft subgrade soil Cement, gypsum, and solidifying agents made of blast furnace slag (so-called cement-based solidifying agents) that are commercially available are soils containing a large amount of organic substances and spoilage, as typified by sludge. For example, it is used to solidify a substance that is hard to solidify with cement alone with sufficient strength. The component ratio is cement 7
The balance is composed of blast furnace slag, gypsum, and crushed alumina powder with respect to about 0% by weight. This solidifying agent is more expensive than cement, and it becomes economically effective if the amount used is reduced.

Table 4 shows an example in which less than 10% of the above solidifying agent was mixed with a sample in which 30% and 50% of crushed stone powder was mixed with soil X, Y and Z having a water content ratio of 40% or more. . Since the uniaxial compressive strength required for a paved road is 3 kgf / cm ² , the desired strength can be obtained by adding less than 10% of the cement-based solidifying agent in any of the samples. Moreover, the larger the amount of crushed stone powder mixed, the smaller the amount of cement in the solidifying agent for obtaining the required strength.

[0040]

[Table 4]

(D) Application example to soft subgrade soil Cement, gypsum, blast furnace slag (cement-based solidifying agent), and lime and aluminum sulfate in the same manner as above, water content ratio 4
30% crushed stone powder for 0% or more soil A, B, C
Table 5 shows an example in which the solidifying agent is mixed in an amount of 4 to 12% with respect to a sample in which 0% is mixed.

It can be seen that the strength is about 30% higher than in the case of Table 4 above.

[0043]

[Table 5]

(E) Example of application to sludge Attempts were made to solidify sludge having a water content of 130% using the solidifying agents D, E and F shown in Table 6.

[0045]

[Table 6]

[0046] By adding 500g around the solidifying agent 3 with respect to sludge 1320 g, uniaxial compressive strength 0.6 kgf / cm ² or more 3 days curing, 7 days 1 kgf / cm ² or more at the reflux The conditions of (3) are almost cleared for all the solidifying agents D, E, and F. Of these, the cement-based solidifying agent of D is a mixture of blast furnace slag, calcium sulfate, crushed alumina powder, etc., with the balance to 70% by weight of cement. It is relatively expensive. In addition, the solidifying agent E has a large amount of cement, and thus the solidifying agent D
There is a price disadvantage as well. Therefore, it can be understood that it is economically effective to blend the solidifying agent F according to the present invention and crushed stone powder to reduce the amount of cement.

(F) Application Example for Solidification of Soil Containing Asphalt Powder Solidifying material mixed with crushed stone powder obtained by mixing 3 parts by weight of solidifying agent C shown in Table 3 above with crushed stone powder or fly ash; 10 parts by weight Then, 90 parts by weight of asphalt powder was added to form a construction body having a layer thickness of about 400 to 500 mm as a base roadbed material for a paved road, and then the construction body was sprinkled with a water sprinkler to obtain a CBR value of 20. % Was obtained.

In this example, even though a large amount of asphalt powder having no solidifying action by itself was added, it was possible to exhibit an appropriate solidifying strength as the above-mentioned base course material. Therefore, a subgrade containing asphalt powder can be reinforced by the present invention.

(G) Utilization as a subgrade material Crushed stone powder-mixed solidified material obtained by mixing 25% of the solidifying agent C shown in Table 3 with crushed stone powder was removed to the road surface as a base roadbed material for paved roads to obtain a layer thickness. When a construction body of about 400 to 500 mm was formed and then water was sprinkled on the surface with a water sprinkler, a strong solidified surface was formed in about 30 minutes, and the asphalt pavement of the latter stage could be performed without problems.

In this embodiment, the particle size of the crushed stone powder is not particularly limited, and crushed stone powder produced in a usual process can be used. For example, an attempt is made to impart water permeability to the solidified body of the solidified material. In this case, it is possible to increase the particle size of the crushed stone powder so that the solidified body has a porous structure to form a solidified body with good drainage.

Although water is sprinkled in the above embodiment, sprinkling work can be omitted in a place where natural water such as groundwater or spring water exists. Therefore, in the above-mentioned example, by mixing crushed stone powder having a particularly large particle size, the sprinkled water is quickly permeated into the entire working layer, and the formation of an uncured portion due to lack of water is prevented, The solidified construction surface itself can be made porous and a pavement surface with good drainage can be formed.

Since it is possible to form a porous solidified body as described above, as another application example of this solidifying agent, rainwater can be formed by forming the underlayer 3 of the paving stone tile 1 as shown in FIG. Etc. can quickly penetrate the roadbed 4 from the gap 2 of the pavement tile 1 through the underlayer 3 to obtain a paved road with good drainage.

(H) Injection material, other application examples Further, as shown in FIG. 5, a slurry S ₁ prepared by kneading with water a solidified material [crushed stone powder + solidifying agent] mixed with crushed stone powder in a state where aluminum sulfate is not mixed is used. The construction purpose space V is filled with the aluminum sulfate aqueous solution S ₂ and the paths P ₁ and P ₂ are respectively supplied.
By pouring the same simultaneously through, a solidified body is formed almost instantaneously in the space V. Therefore, according to the present invention, the pavement can be repaired more reliably by injecting it into the gap formed between the back surface of the pavement surface and the underlayer in the pavement.

Further, by adopting the crushed stone powder having a large particle size, the hardened layer obtained by the solidifying agent also has water permeability, so that, for example, as shown in FIG. Since the solidified layer itself formed in the void P has water permeability when it is used as an injecting material to fill the void P generated when the soil on the peripheral surface of 10 flows out, it is concentrated on the surface of the solidified layer in the soil. As a result, the spring water and the rainwater will not flow down, and the erosion will be alleviated.

(I) Example of application to revetment material Furthermore, since the solidifying material according to the present invention is rapidly solidified by contact with water, it is housed in a water-permeable container or wrapping bag, submerged in water, and solidified in water. It can form a body and can be applied to sandbags for fishing reefs and revetments, for example.

A strength test of the submerged solidified product was carried out in the following manner. That is, as a solidifying material, a solidifying main agent composed of 50% by weight of cement, 20% by weight of slaked lime, and 10% by weight of a sulfuric acid band (aluminum sulfate purity of 50%) and crushed stone powder at a ratio of 3: 7 and 2: 8. The uniformly mixed solidified material is filled into a columnar shape having a diameter of 5 cm and a height of 10 cm in three times, and 1 kg of rammer is added from a height of 17 cm to 1 each time.
A tamping work was carried out by dropping 9 times (compacting pressure at this time was 5.6 kgf / cm ² ). Further, a comparative sample which was not subjected to the above-mentioned tamping work was also molded and submerged in seawater at 20 ° C. for curing.

Table 7 below shows the relationship between the curing days and the uniaxial compressive strength of each of the above samples. As can be understood from Table 7, although the uniaxial compressive strength of the sample relating to the large amount of the solidified main agent blended in the 1-day curing was high, the difference due to the blending of the solidified main agent was hardly seen in the 7-day curing, 20 kgf /
The strength was around cm ² .

Further, the comparative sample not subjected to the above-mentioned tamping work can obtain a very weak strength as compared with the above-mentioned sample, and it is understood that the tamping work is necessary in practical use.

[0059]

[Table 7]

A test by Professor Kamon Masafumi of the Kyoto University Disaster Prevention Research Institute will be described below as an example regarding a construction method as an alternative to abandoned stones used for underwater breakwaters, underwater structure foundations, and the like.

In this example, crushed stone powder classified into silt having quartz porphyry as a host rock, and a solidifying agent composed of 50 parts by weight of cement, 20 parts by weight of slaked lime, and 30 parts by weight of aluminum sulfate were used. The solidified material added to 3 samples mixed in a ratio of 10: 2 (sample), a weight ratio of 8: 2 (sample), and a weight ratio of 7: 3 (sample) was used.

FIG. 7 shows the dry density and permeability coefficient (unit: cm) of crushed stone powder and a mixture of crushed stone powder and a solidified material by a water level permeability test.
/ Second) is a graph showing the relationship with. The specimens shown in FIG. 7 were prepared by hydrating and solidifying the above sample on the 7th day and the 2nd day.
The water permeability and dry density of the solidified product on the 8th are shown, and the crushed stone powder is pressure-molded to have the dry density shown, and the water permeability is measured.

As shown in FIG. 7, the solidified body of the above sample has a hydraulic conductivity of about 10 ⁻⁴ to 10 ⁻⁵ cm / sec, which is a large value for a hydrated solidified body. It shows that the hydration reaction progresses in the entire bag within a certain period of time after being dropped in water.

FIG. 8 is a graph showing the solidification characteristics of the solidified material mixed with the solidified crushed stone powder. The dry density and the solidified body of the above sample and the comparative sample in which the crushed stone powder and the cement were mixed at 7: 3 were shown. The measurement results with uniaxial compressive strength are described.

The sample according to the present invention and the above-mentioned comparative sample were prepared by mixing crushed stone powder and the solidified material as they were and molding them to a dry density of 1.2 to 1.4 g / cm ^3. It was prepared by applying a confining pressure of 10 to 20 kPa to the upper surface of the sample and immersing and curing it.

As shown in FIG. 8, in the comparative sample in which crushed stone powder and cement were mixed, shrinkage occurred and the dry density increased to 1.5 to 1.6 g / cm ³ , and the hydration reaction of cement and density increase As a result, a 7-day strength of 2MPa or more was developed.

On the other hand, in the sample using the above solidified material, the set density before water immersion was almost maintained, and in the above sample, the strength of 7 days of 1-3 MPa was developed, and only the above cement was crushed stone powder. The value is comparable to that of the comparative sample mixed with.

Further, it was confirmed that the expansion pressure varied greatly depending on the mixing ratio of the crushed stone powder and the solidifying agent, but the absolute amount was small, and the expansion pressure subsided in the initial stage of curing. Therefore, when the bag is dropped into the water, which will be described later, the bag can be prevented from being damaged by gently filling the bag. Further, this indicates that there is an advantage that a cavity is not formed at the boundary with the existing structure even when considering the use as a backfill material, for example. Further, the water permeability of the solidified body obtained by the expansion action can maintain a large value as the hydrated solidified body as described above.

Next, 30 kg of each of the above samples was packed in a bag in which a non-woven fabric sheet was folded in two and two sides were sewn together, and the remaining one side was also sealed, and water was poured into a 1 m deep water tank filled with curing water. An immersion experiment was conducted. The water in the aquarium is 14 to 20
C. fresh water (tap water) and seawater (artificial seawater) were used.

FIG. 9 is a graph showing the strength characteristics of the solidified product on the 28th day under the above conditions. According to Fig. 9, the strength development varies depending on the degree of mixing of the crushed stone powder and the solidified material in the bag and the unevenness of the density, but in the case of fresh water curing, the strength of 0.5 to 3 MPa on the 28th day is the seawater curing. In the case of, the strength of 0.2 to 1.5 MPa was developed at the same age, and it was confirmed that the material solidified with sufficient strength.

Also, it is understood that the solidification strength of the sample in which a large amount of the solidified material is mixed is higher than that of the sample. In this experiment, when the bag containing each sample was temporarily pulled up 2 to 3 minutes after immersion in water, the solidified material in the bag was already solidified at that time, and it was also confirmed that it had sufficient early strength. did it.

Further, the suspension of the curing water in the water tank due to the outflow of the crushed stone powder and the solidified material due to the filtering function of the nonwoven fabric was not visually confirmed. Further, FIG. 10 is a graph showing the relationship between the water content and the dry density of each of the specimens obtained by dividing the solidified body after the above-mentioned experiment into three parts, the upper part, the middle part, and the lower part, and there is not much difference between the samples and the samples. Although no difference occurs, it can be confirmed that the density of the middle part is higher than the densities of the upper part and the lower part. It is presumed that this is because the samples outside the bag (upper and lower parts) that can come into contact with the curing water expand due to hydration, compressing the sample in the middle part and increasing the sample density in the middle part. When carrying out with a bag of capacity, it is necessary to determine the weight ratio of crushed stone powder / solidified material in consideration of this point.

The pH of the curing water in the aquarium was found to rise to some extent (pH 10) in the case of fresh water curing, but was stable at pH 9 or less in the case of sea water curing, and was packed with cement and was made of the same material. The increase in pH is suppressed to the minimum as compared with the case of adding.

[0074]

As described above, according to the present invention, by incorporating the above-mentioned solidifying agent, a solidifying material that is strong and has excellent early strength can be obtained at low cost even if the mixing ratio of crushed stone powder is increased. Can be provided. As a result, it becomes possible to use crushed stone powder, which used to be mostly disposed of in the past, instead of natural sand and crushed sand, which are becoming difficult to collect from the standpoint of environmental protection, which is extremely useful in industry. It can be said to be an invention.

[Brief description of drawings]

FIG. 1 is a graph showing a relationship between a solidified material of the present invention and a CBR value.

FIG. 2 is a graph showing the relationship between the solidified material of the present invention, the CBR value, and the load amount.

FIG. 3 is a graph showing the relationship between the mixing ratio of the solidifying material of the present invention and the solidifying strength depending on the number of curing days.

FIG. 4 is a conceptual diagram of an embodiment of the method of the present invention.

FIG. 5 is a conceptual diagram of another embodiment of the method of the present invention.

FIG. 6 is a conceptual diagram of another embodiment of the method of the present invention.

FIG. 7 is a graph showing the relationship between the dry density and the hydraulic conductivity of crushed stone powder and a mixture of crushed stone powder and a solidifying material in another example of the method of the present invention.

FIG. 8 is a graph showing solidification characteristics of a solidified material containing crushed stone powder solidified by the method of the present invention.

FIG. 9 is a graph showing the strength characteristics of the solidified body of 28 days old according to the method of the present invention.

FIG. 10 is a graph showing the relationship between the dry density of each part of the solidified body in the packaging bag after the method of the present invention and the water content ratio.

Claims (9)

(57) [Claims] 1. Cement 100 parts by weight , limes 10 to 5
0 parts by weight and 1 to 10% of aluminum sulfate
A crushed stone powder-mixed solidifying material, characterized in that the crushed stone powder in an amount equal to or more than that of the solidifying agent mixed in the range is mixed . 2. The crushed stone powder-mixed solidified material according to claim 1, wherein any one of the following substances is added to the solidifying agent. Gypsum, various incineration ash. At least one of volcanic ash and fly ash 1
seed. At least one of blast furnace slag, stainless slag, and alumina ore crushed powder. 3. The solidified material containing crushed stone powder according to claim 1, wherein sodium carbonate is added as a solidification aid for the solidifying agent. 4. A solidified material mixed with crushed stone powder, characterized in that a predetermined amount of the solidified material mixed with crushed stone powder according to any one of claims 1 to 3 is mixed with soil for improved purpose containing sludge to solidify the soil for improved purpose. Construction method. 5. A solidified material mixed with crushed stone powder, characterized in that a predetermined amount of the solidified material mixed with crushed stone powder according to any one of claims 1 to 3 is mixed with soil for improved purpose containing asphalt powder to solidify the soil for improved purpose. Material construction method. 6. A construction layer formed by sprinkling or filling the crushed stone powder-mixed solidification material according to any one of claims 1 to 3 into a construction layer formed by spraying or pouring, or solidifying using natural water. A construction method using a solidified material containing crushed stone powder characterized by the above. 7. The solidified material containing crushed stone powder according to claim 1.
A construction method by the cement and lime compound are mixed a predetermined amount of water kneaded with slurry against crushed stone powder, Arumini sulfate
A construction method using a solidified material containing crushed stone powder, which is characterized by injecting or flowing into a construction purpose space together with an aqueous solution of um . 8. The crushed stone powder and cement and lime compound, according to claim 7 in which the addition of any one among the following ,,
The method of construction using the solidified material containing crushed stone powder as described in. plaster,
Various incineration ash. At least one of volcanic ash and fly ash. At least one of blast furnace slag, stainless slag, and alumina ore crushed powder. 9. The crushed stone powder-mixed solidifying material according to claim 1 is housed in a water-permeable container or packaging bag and submerged in water.
A construction method using a solidified material mixed with crushed stone powder that forms a required solidified body in water.