JP2000256669A - Soil mortar using lime-treated soil and banking method using same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for preparing an excellent fluidization-treated soil having good filling properties without leaving voids and totally well balanced with respect to properties such as fluidity, resistance to material segregation and strength, and a banking method using the same in the civil engineering and construction works. SOLUTION: A clod 1 is added to and mixed with 10-300 kg, based on 1 m3 clod, quicklime or soil conditioner 2 whose major component is quicklime, and the clod and the soil conditioner are cracked to form a lime-conditioned soil 5. Water 6 and a hydraulic solidification material 7 is added to and mixed with the resulting lime- conditioned soil 5 to prepare a soil mortar 9. Not less than 50 vol.% lime-conditioned soil is incorporated into a fluidization-treated soil, and the resulting mixture is subjected to classification treatment according to circumstances. A banking structure is executed with the use of the fluidization-treated soil. In this instance, the fluidization soil is transported to the execution site by equipment having a pump as the transportation means. According to circumstances, shoot-stamping is used in execution of banking. The utility of generated residual soil is increased and excellent workability in construction is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fluidized soil used for backfilling, backfilling, filling, embankment, and the like in civil engineering construction work, and a construction method using the same.

[0002]

2. Description of the Related Art Conventionally, methods for backfilling, backfilling, filling and embankment of earth and sand in civil engineering construction work include a method of using soil generated at a construction site, for example, excavated soil as construction earth and sand. When the residual soil is defective, a construction method is known in which a high-quality earth and sand is used instead, or an improved soil in which a soil improving material such as a solidifying material is mixed with the generated residual soil is used.

This construction method requires compaction and compaction. For example, in the case of laying and burying of buried pipes such as pipe-type underground tracks such as sewer pipes, gas pipes and communication cables, backfilling is required. It is necessary to control the pressure of a rolling machine or the like to such an extent that the buried pipe is not likely to be damaged. For these reasons,
Around the buried pipe, it is difficult to compact and compact sufficiently,
There is a problem that cavities tend to remain due to insufficient filling properties, which causes troubles such as land subsidence and depression.
Also, in this case, excessive stress is likely to occur in the buried pipe, etc.,
It can lead to damage. The same occurs in backfilling methods such as retaining walls and abutments.

On the other hand, in order to solve such a problem,
Various so-called fluidization treatment methods have been proposed. With this fluidization treatment method, civilization construction work is carried out using fluidized treatment soil that has been treated to impart fluidity to the soil generated at the site of civil engineering construction work and to enhance the filling property. This is the method of construction. As the fluidized soil used here,
For example, Japanese Patent Application Laid-Open No. 63-233115 discloses fluidized treated soil (hereinafter referred to as Prior Document 1) obtained by mixing water and a solidifying material into earth and sand by reciprocating rotary stirring and stirring. Japanese Unexamined Patent Publication No. Hei 1-312118 discloses a fluidized treated soil (hereinafter referred to as Prior Document 2) in which excavated soil is mixed with a hydraulically solidifying material and water and fluidized.
No. 328 discloses a fast-acting fluidized soil composed of a mixture of muddy water obtained by mixing earth and sand with water and a solidifying material (hereinafter referred to as Prior Document 3). In Japanese Unexamined Patent Publication No. 7-82884, a fluidized treated soil prepared by mixing a mud containing clay, silt, and fine-grained soil such as bentonite with a soil to be treated to prepare a required adjusted mud and adding a solidifying material thereto ( Reference Document 4) is disclosed.

[0005]

According to the fluidization method using the fluidized soil described in the above-mentioned prior art documents 1 to 4, there is an effect in solving the problems to be solved by each invention. However, in the above-mentioned prior art, the fluidized soil is increased at least by mixing of water and muddy water, compared to the generated residual soil, a material obtained by mixing the solidified material with the soil, or soil (hereinafter referred to as residual soil). Therefore, the utilization rate of the residual soil and the like is reduced by the increased amount, and a large-sized apparatus is required to prepare the fluidized soil. In particular, when the construction site is narrow, work becomes difficult or the space for installing the equipment can not be secured, and the fluidized treated soil is prepared using another device installed in a suitable place in a wider space, and Work such as transportation to the site occurs and the process becomes complicated. And the costs rise accordingly.

On the other hand, in the civil engineering construction work, especially when embankment structures are constructed, embankment structures such as vertical embankments, steep embankments, suppression embankments such as tunnel pits, and embankments in water that cannot be compacted are constructed. In this case, it is required that the fluidized soil used in this method has a good balance of physical properties of those used in the conventional fluidization method.

However, not only the conventional backfilling, backfilling and filling constructions, but also no fluidized treated soil satisfying the above-mentioned requirements for constructing an embankment structure has been found.

Accordingly, an object of the present invention is to provide a fluidized soil which satisfies the following conditions and a fluidization method using the same so as to be suitable for embankment structures. And 1. Good filling properties, no cavities remain, and excellent balance of physical properties such as fluidity, material separation resistance, and strength. 2. It can be prepared only by mixing with water and a hydraulic hardening material, and can be easily prepared with a small device. 3. Be able to increase the utilization rate of construction waste soil. 4. Stable construction and excellent workability.

[0009]

Means for Solving the Problems The present inventors have repeated research and development on fluidized soil suitable for embankment structure construction from the above-mentioned viewpoints and a fluidized treatment method using the same. As a result, the following findings were obtained.

An appropriate amount of quick lime (CaO) or a soil improving material mainly composed of quick lime is added to and mixed with a soil mass such as construction-generated soil in advance without using an adjusting material such as muddy water as in the prior art. This facilitates the crushing of the above-mentioned lumps, and promotes finer particles in the crushing step. As a result, the sieving process is facilitated and the particle size distribution is stabilized. When water and a hydraulic hardening material such as cement slurry are added to the lime-improved soil thus prepared and kneaded, elution of soil particles is suppressed by the lime agglomerating action. As a result, a treated soil having excellent fluidity can be obtained. Even more advantageously, by improving the fluidity of the treated soil, the amount of the kneading water can be reduced, and the utilization rate of the construction generated soil can be increased.

[0011] When the obtained soil mortar is used for embankment structure construction, it can be cast into a chute.
The required fluidity can be reduced and the amount of kneading water can be further reduced. In this way, it is possible to further increase the utilization rate of the construction residual soil. Thus, it has been found that a soil mortar suitable for embankment structures can be obtained. The present invention has been made based on the above findings, and the gist is as follows.

The soil mortar according to claim 1 is a soil mortar used for an embankment structure in civil engineering construction work, wherein the soil mortar is 10 to 30 with respect to 1 m ^{3 of the} earth mass.
0 kg of quick lime or a soil improving material whose main component is quick lime is blended, this mixture is mixed, and the soil mass and the soil improving material are crushed into fine pieces, and the thus obtained lime improved soil is obtained. That is, it is characterized in that it is a treated soil obtained by adding and mixing water and a hydraulic hardening material to a lime improved soil.

A soil mortar according to a second aspect of the present invention is characterized in that, in the invention according to the first aspect, the lime-treated soil contains at least 50 vol.%.

According to a third aspect of the present invention, there is provided the soil mortar according to the first or second aspect of the invention, wherein water and a hydraulic hardening material are added to the lime-treated soil and mixed. And further obtained by subjecting it to a classification treatment such as sieving.

[0015] The soil mortar embankment method according to claim 4 is a civil engineering construction method in which an embankment structure is constructed using fluidized soil in civil engineering construction work, wherein the soil is subjected to the fluidized treatment. A feature is that the soil mortar according to item 1, 2 or 3 is transported to a construction site of the embankment structure using a transportation device including a pump as a transportation means of the soil mortar.

[0016] The soil mortar embankment method according to claim 5 is a civil engineering construction method in which an embankment structure is constructed using fluidized soil in civil engineering construction work, wherein the soil is subjected to fluidized treatment. A feature is that the soil mortar described in 1, 2, or 3 is used, and the embankment structure is constructed by chute casting the soil mortar.

[0017]

Next, an embodiment of the present invention will be described with reference to the drawings.

(1) FIG. 1 is a schematic flow diagram for explaining a soil mortar preparation process of the present invention and a soil mortar embankment method for constructing an embankment structure using the soil mortar. In the figure, 1 is a soil mass, 2 is a soil improvement material, 3 is a weighing and blending device, 4 is a mixing and crushing machine, and 5 is a lime improvement soil. The clay mass 1 and the soil improving material 2 containing quicklime are weighed and blended into a mixing and crushing machine 4 with a predetermined ratio of the blend. Here, the lime improved soil 5 in which the soil quality has been improved by mixing and crushing is obtained. A predetermined amount of water 6 and a hydraulic hardening material 7 are put into a kneader 8 and kneading treatment is performed on the obtained lime-improved soil 5 to prepare a required soil mortar 9. The thus prepared soil mortar 9 is discharged from the mixer,
It leads to the transportation device 10. The transport device 10 is provided with a pump, by which the soil mortar 9 is transferred to the embankment structure 1.
Transport to 2 construction site. As the transport device 10, for example, a pump truck or a combination device of a pump and transport piping is suitable according to the type of the embankment structure 12 and the condition of the construction site. The soil mortar 9 transported to the construction site is sent to a predetermined embankment 12
To construct.

(2) In the above-mentioned process, there is no particular limitation on the type of the raw material soil of the block 1 used for the preparation of the lime-improved soil 5, for example, silty soil, cohesive soil, sandy cohesive soil, gravel Cohesive soil, loam, volcanic ash cohesive soil, sandy soil,
And sand and gravel may be used, and any of the remaining soil from construction or good quality sand may be used. There is no need to restrict the composition ratio of the various raw material soils in the above-mentioned mass. It is desirable that the remaining soil generated at the construction site be backfilled (reused) as much as possible. In other words, it is advantageous in terms of the cost of construction work to increase the use ratio of construction soil as much as possible,
It is also desirable for environmental protection. From this viewpoint, in order to advantageously perform the soil mortar embankment method using the soil mortar of the present invention, it is desirable that the mixing ratio of the lime improving soil in the soil mortar be 50 vol.% Or more. In addition, the proportion of the lime improvement soil in the soil mortar was 50 vol.%.
Even with the above, there is no problem at all, the physical properties of the soil mortar are stable, the level thereof and the balance between them are excellent, and the soil mortar embankment method can be stably executed.

As the soil improvement material 2, a material containing a predetermined amount of quicklime is used. Quick lime may be used alone, or quick lime may be mainly used, and cement, gypsum, slag, or the like may be blended as an auxiliary material. However, the blending ratio of the auxiliary material is set to less than 50 wt.%, And preferably 40 wt.% Or less. This is because if the mixing ratio of the auxiliary material is too large, the soil improvement effect cannot be sufficiently exhibited. The reason why the quick lime-based soil improvement material is used as the soil improvement material 2 is that the soil mass is smoothly broken by this. This is presumed to be because when quicklime (CaO) is mixed into the soil mass 1, CaO absorbs the water in the soil mass and causes a digestion reaction, and the product causes an action such as ion exchange in the soil. Is done.

The mixing ratio of the quicklime-based soil improvement material 2 to the earth mass 1 should be determined to an appropriate value according to the type of earth mass and the type of embankment structure to be constructed. According to the experiments by the present inventors, even if the types of the soil mass and the embankment structure change, the mixing ratio of the soil quality improving material 2 is 1 m ^{3 in} the earth mass.
Should be in the range of 10 to 300 kg. And desirably, it should be in the range of 20 to 200 kg. If the mixing ratio of the quicklime-based soil improving material is less than the lower limit, the above-mentioned effects and effects of the soil improving material are not sufficiently exhibited. No improvement in effectiveness is observed, which is disadvantageous in terms of cost.

(3) As described above, the quicklime-based soil improvement material has the above-described functions and effects. Therefore, if the mixing process is performed together with the soil mass, the crushing of the earth mass is promoted. Therefore, at the time of the mixing process, mixing and crushing of the soil mass and the soil improvement material can be performed in the same casing.
It is desirable to use a mixed crusher. For example, a drum mixer, a single-shaft or twin-shaft paddle mixer, a ribbon mixer, a double-roll crusher, an impact crusher, or a combination thereof may be used.
However, in the case of using poor residual soil for the earth mass, it is particularly effective to use, for example, a mixed crusher satisfying the following conditions.

The upper part has a supply port for the soil mass to which the quicklime-based soil improvement material is added, and the lower part has an outlet for the mixed and crushed lime-improved soil 5. And, in a trapezoidal box-shaped casing having a taper diverging from the upper end to the lower end, the first and second swingable vanes, which are oscillated by centrifugal force, are arranged separately in the axial direction and in the axial direction. It is preferable that the second drive rotors are arranged in parallel on the left and right, respectively, and the third drive rotor having the same shape as these is arranged below the intermediate position between the two drive rotors.

Since the casing of the mixing and crushing machine has the above-mentioned shape, the lumps dispersed by the impact effect of the swingable blade are prevented from adhering and depositing on the side wall of the casing.

When the above-mentioned mixing and crushing machine is used, defective soil such as construction waste soil, crushed stone washed cake, shield mud, and sedimentary soil such as dams containing various impurities such as concrete waste, asphalt waste and gravels is used. It is effective for

(4) The mixing and crushing machine will be described in more detail.

FIG. 2 is a sectional view showing the internal structure of an example of the mixing and crushing machine. In the figure, reference numeral 13 denotes a box-shaped main body (casing), at the upper end of which is provided a supply port 14 for a soil mass in which raw lime-based soil improvement material is mixed, and at the lower end (bottom) is the entire surface of the casing. A wide opening 15 for crushed soil is provided. The shape of the casing 13 has a trapezoidal shape diverging from the upper end to the discharge port at the lower end, and has a shape capable of preventing the adhesion of soil to the inner surface of the main casing. Further, on the inner surface of the upper end of the casing, a shielding plate 16 having a V-shaped cross section is provided around from the vicinity of the lower end of the supply port 14 so as to prevent the supply material from escaping outward and to prevent the drive rotor from rotating. It is designed so that dust generated by the ascending airflow generated by the rotation and soaring will be blocked, and will not go out of the mixing and crushing machine.

(5) Thus, the lime improved soil 5
The earth mass 1 is finely disintegrated, and the particle size thereof is uniform and uniform. The lime-improved soil can be further uniformed in particle size distribution by performing classification treatment such as sieving.

(6) Next, water 6 and a hydraulic hardening material 7 are added to the lime-improved soil 5, and the mixture is kneaded to prepare a fluidized kneaded soil mortar 9. Here, as the hydraulic solidifying material 7, for example, cement such as Portland cement, blast furnace cement and fly ash cement, cement-based solidifying material, blast furnace slag fine powder, and the like are used.

The material mixing ratio for preparing the soil mortar 9 for use in the construction of the embankment structure depends on the treated soil 9
It is required that the treated soil 9 can be transported to the construction site in a stable state by using a pump truck for transporting the soil to the construction site or a combination device of the pump and the transport pipe. It is necessary to have the liquidity for that. When embankment structures are constructed by chute casting the treated soil 9 under conditions where there is no need to transport the treated soil to the construction site, the fluidity of the treated soil 9 may be smaller. . The material mixing ratio satisfies the above conditions, and is determined according to the strength required for the embankment structure 12, the fluidity of the treated soil 9 under construction conditions, and the like.

The present inventors have studied the material mixing ratio of the soil mortar 9 from the above viewpoint, and have obtained the following conclusions.
That is, in this fluidized soil, water and a hydraulic solidifying material are used in an appropriate amount depending on the required strength, fluidity under construction conditions, and the like, and preferably 100 to 500 kg / m ^3.
And 30 to 500 kg / m ³ , respectively. In addition, this soil mortar 9 is backfilled,
A foaming agent, a dispersing agent, or a fluidizing agent, which is an additive added to a general fluidized soil used for backfilling and filling, may be blended.

(7) The soil mortar 9 thus prepared is transported to a civil engineering work site by a transport device 10 provided with a pump. The soil mortar 9 transported to the civil engineering work site is shot and the embankment structure is constructed. Here, as an embankment structure, for example, vertical embankment in road widening construction and construction site, steep embankment, suppression embankment such as tunnel entrance, or various embankments in water that cannot be compacted, etc. is there. When the soil mortar 9 is prepared by kneading and directly supplied to the chute of the embankment structure without transporting the pipe, the fluidity may be small, and therefore, the ratio of the kneading water in the material mixing ratio is as follows. , Above 10
A small portion within the range of 500 kg / m ³ -lime improved soil is sufficient. That is, in this case, since the ratio of the lime-improved soil 5 in the soil mortar 9 to be cast is increased, the usage ratio of the soil mass 1 is increased, and accordingly, the utilization rate of the construction residual soil can be increased. Become.

[0033]

The present invention will be described in more detail with reference to examples.

(1) Comparative Examples 1 to 5 and Examples 1 to 5 Comparative soil N0.1 to 5: The construction-generated soil consisting of cohesive soil mixed with gravel in Yokohama city was collected five times at the same location, and each soil was collected. NO.1
Comparative Examples No. 1 to No. 5 were used as comparative soil Nos.

Lime-improved soil Nos. 1 to 5: The same construction-produced soil as that used in the above comparative example was collected five times at the same location, and 50 kg / m ^3-of quicklime was collected on each of the soils No. 6 to 10 Soil mortar was prepared by mixing the mixture at the ratio of soil with a mixing and crushing machine as shown in FIG. 2 and classifying it with a 20 mm sieve to prepare each improved soil. Was used for the preparation of

Comparative Examples 1 to 5 and Examples 1 to 5: Comparative soil
Cement, water and a foaming agent were blended in the amounts shown in Table 1 with each of NO.1-5 and lime-improved soil NO.1-5, and kneaded to prepare a fluidized treated soil. Comparative Examples 1 to 5 which were fluidized soils outside the scope of the present invention and Examples 1 to 5 which were fluidized soil (soil mortar) within the scope of the present invention were obtained. Next, the physical property test was performed.
By the physical property test, the flow value, unit weight, breathing rate and uniaxial compressive strength of each fluidized soil were determined. Table 2 shows the results. The flow value of the fluidized soil immediately after preparation was measured by a flow test based on JIS R5201, and the breathing rate of the fluidized soil immediately after preparation was measured by a breathing test based on JSCE-1986. The unconfined compressive strength was determined as follows. A cylindrical specimen having a diameter of 50 mm and a height of 100 mm was prepared from fluidized soil and cured in a constant-temperature room at 20 ° C. and 80% humidity for 28 days. It was measured by a uniaxial compression test based on 1216.

[0037]

[Table 1]

[0038]

[Table 2] As is clear from the above test results, the fluidized soils of Comparative Examples 1 to 5 had large variations in the physical property values of the fluidized soil even though the raw material soils were at the same location. Is not stable. In addition, those having a high flow value have a low breathing rate and low uniaxial compressive strength, while those having a good breathing rate have a low flow value and low uniaxial compressive strength. In addition, those having high uniaxial compressive strength have low flow values and deteriorated breathing rates.

On the other hand, in Examples 1 to 5 which are fluidized soils (soil mortars) within the scope of the present invention, the dispersion of the physical property values among them is extremely small, and shows stable physical properties. Moreover, it can be seen that the balance between the level of each physical property and each physical property value is excellent.

Next, using the soil mortars of Examples 1 to 5, a construction test of a vertical embankment structure accompanying a road widening work was conducted. In the test, the soil mortar was sent out using a pump, transported to a construction site through a pipe, and embankment having a vertical wall was performed by casting a chute. The construction work was performed stably and favorably using any of the soil mortars of Examples 1 to 5.

(2) Comparative Example 6, Examples 6 to 8 Comparative soil No. 6: Construction-derived soil composed of cohesive soil mixed with gravel in Yokohama city was collected, and this collected soil No. 6 was used as a comparative soil No. 6 Without adding a soil conditioner such as quicklime to this,
It was used for preparing fluidized soil as it was.

Lime-improved soil Nos. 6 to 8: The same construction-generated soil as that used in Comparative Example 6 above was collected three times at the same location, and each of the collected soils Nos. 7, 8, and 9 collected 1 m ^{3 of} soil. On the other hand, those obtained by blending quick lime in proportions of 52 kg, 105 kg and 157 kg, respectively, were crushed by a mixing and crushing machine as shown in FIG. 2, and then classified with a 20 mm sieve to prepare each improved soil. Improved soil No. 6 to 8 was used for preparing soil mortar. Incidentally, Table 3, summarizes the formulation of comparative soil NO.6 and lime improved soil NO.6～8, quicklime amount compounded with respect to collected soil 1 m ^3.

Comparative Example 6 and Examples 6 to 8: Comparative soil NO.
No. 6 and lime-improved soil Nos. 6 to 8 were mixed with blast furnace cement and kneading water in the mixing amounts shown in Table 4, and kneaded to prepare fluidized treated soil. Comparative Example 6 which is a fluidized soil, and Examples 6 to 8 which are fluidized soil (soil mortar) within the scope of the present invention. Next, a physical property test was performed to determine the flow value and the uniaxial compressive strength of each fluidized soil. The result is
Also shown in Table 4. The test methods for the flow value and the uniaxial compressive strength are the same as those described above.

[0044]

[Table 3]

[0045]

[Table 4] As is clear from the above test results, the fluidized treated soil of Comparative Example 6 had no added quick lime as a soil conditioner, had a good flow value, but had a low uniaxial compressive strength. Poor balance of physical properties.

In contrast, the flow values of Examples 6 to 8, which are soil mortars within the scope of the present invention, are all good. Uniaxial compressive strength has also secured the required level. Looking at the relationship between the uniaxial compressive strength of the soil mortar of the present invention and the amount of quicklime as the soil improving material, the mixing ratio of the blast furnace cement as the hydraulic setting material to the lime improved soil is almost 200 kg / m ³ -lime improving. When the proportion of soil is constant and the amount of quicklime mixed increases, the uniaxial compressive strength increases.

Next, using the soil mortars of Examples 6 to 8, a construction test of a vertical embankment structure accompanying road widening was carried out. In the test, the embankment having a vertical wall was constructed by chute driving using a pump truck. The construction work was stably performed well using any of the soil mortars of Examples 6 to 8.

[0048]

According to the present invention, an embankment structure which is excellent only in mixing with kneading water and a hydraulic hardening material, has excellent balance of physical properties in terms of filling properties, fluidity, material separation resistance and strength. Fluidized soil suitable for construction of the object, that is, soil mortar, is obtained. And this soil mortar can be easily prepared with a small apparatus. Also,
By using this soil mortar, it is possible to increase the utilization rate of the residual soil generated at the civil engineering work site. Further, the transportation of the soil mortar can be performed using a pump, and a chute casting construction is also possible, which is excellent in construction workability. Such a soil mortar and a soil mortar embankment method using the same can be provided, and an industrially useful effect is provided.

[Brief description of the drawings]

FIG. 1 is a schematic flow chart for explaining a soil mortar preparation process of the present invention and a soil mortar embankment method using the same.

FIG. 2 is a cross-sectional view showing an internal structure of an example of a mixing and crushing machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 soil mass 2 soil improvement material 3 weighing / blending device 4 mixing and crushing machine 5 lime improvement soil 6 water 7 hydraulic hardening material 8 kneading machine 9 soil mortar 10 transport device 11 chute setting device 12 embankment structure 13 body (casing) 14 Supply port 15 Discharge port 16 Shielding plate 17 First rotor 18 Second rotor 19 Third rotor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiya Yokota 2-16-19 Ando, Shizuoka City, Shizuoka Prefecture Clair Ando 202 (72) Inventor Ichiro Mannami 2-28-11 Kuboyamacho, Hachioji City, Tokyo (72) Inventor Rishi Kojima 1-105 Nogamicho, Ome-shi, Tokyo (72) Inventor Hiroki Goto 5-129 Futamatao, Ome-shi, Tokyo F-term (reference) 2D040 AB07 CA01 CA03 CA04 CA05 CA09 CD07 EB04 4H026 CA02 CC03 CC06

Claims (5)

[Claims] 1. A soil mortar used for an embankment structure in civil engineering construction work, comprising: a soil mass;
³ to 10 kg of quicklime or a soil improving material whose main component is quicklime, is mixed with the soil improving material, and the thus obtained mixture is mixed, and the mass and the soil improving material are crushed. A soil mortar, wherein water and a hydraulic hardening material are added to the obtained lime-improved soil and mixed. 2. The soil mortar according to claim 1, wherein said soil mortar contains lime-improved soil of 50 vol.% Or more. 3. A treated soil obtained by adding and mixing water and a hydraulic hardening material to the lime-improved soil according to claim 1 or 2, and further subjecting the treated soil to a classification treatment. Soil mortar, characterized in that: 4. A civil engineering construction method for constructing an embankment structure using fluidized soil in civil engineering construction work, wherein the fluidized soil is used as the soil.
Using the soil mortar of the description, and, using a transport device including a pump as a means of transport of the soil mortar, characterized by being transported to the construction site of the embankment structure,
Soil mortar embankment method. 5. The soil mortar according to claim 1, which is a civil engineering construction method in which an embankment structure is constructed using fluidized soil in civil engineering construction work, wherein the soil is subjected to fluidized treatment. And embedding the soil mortar in a chute.