JP2000144743A - Lightweight soil cement utilizing glass waste material and its execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain lightweight soil cement capable of simply land-forming a ground having excellent strength by adding a cement solidification material to the mixed soil of a vitreous foam acquired by adding a foaming material to vitreous waste-material powder and soil. SOLUTION: A foaming material is added to a vitreous waste-material powder obtained by crushing a glass waste material such as bottle glass, flat glass or the like and thermally treated, and crushed stone-shaped vitreous foams 1, 1 are acquired. Cement solidification materials 3, 3 are added to mixed soil, in which the vitreous foams 1 are mixed with soil 2, 2, and lightweight soil cement 13 is manufactured. Sandy soil or loamy soil is preferable as soil 2, and a material, in which a small amount of pulverized glass powder are blended to coarsely crushed glass powder, is desirable as the vitreous waste material powder. When the lightweight soil cement 13 is spread all over and rolled and compacted, a ground having excellent strength can be land-formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight soil cement utilizing glass waste material and a method for applying the same.

[0002]

2. Description of the Related Art At present, the global environmental problem has become a global problem, and its importance is increasing more and more toward the coming 21st century. In Japan, the Containers and Packaging Recycling Law was fully implemented in April last year. Against this background, 2.16 million tons per year (1996
It is hoped that glass bottles that are subject to the Containers and Packaging Recycling Law will be recycled and recycled, and that they will be applied to the industrial world, where a huge market is expected.

The rate at which glass bottles are made into cullets and reused as bottle materials is as high as just over 60%. However, most of the remaining 500,000 tons excluding return bottles such as beer bottles and shochu bottles are mostly disposed of by burial. It has not been. (Some are recycled into tiles, bricks, etc., but the research elements are strong and the amount is small.)

On the other hand, recently, in particular, demand for civil engineering materials has been increasing.
While it is increasing steadily due to fire-retarding buildings, ground improvement, expansion of road networks, and enhancement of public facilities, natural resources such as river sand, gravel, crushed stone, etc. There is a shortage of materials, and it is becoming difficult to secure enough to meet the growing demand due to restrictions on the amount that can be mined due to problems such as environmental destruction.

[0005] Taking the embankment construction on soft ground as an example, the use of lightweight soil makes roadbed improvement work unnecessary.
Since the amount of settlement that continues after completion can be reduced, maintenance costs such as repairs can be reduced. In addition, in the embankment work and the widening work on the sloping land, only a minimum amount of land is required, and earth retaining work such as retaining walls is reduced or unnecessary, and the scale of temporary construction work can be reduced.

As described above, as a recent trend, the construction industry demands that construction materials, construction materials, the construction thereof, and buildings be particularly lightweight for reasons such as aging of workers and measures against earthquakes.

[0007] Regarding the lightweight embankment, a large styrofoam block is stacked as an embankment material by the EPS method, or a foam cement used as an injecting material such as a backing material for a tunnel or a filling material for a cavity is pumped. There is an FCB method in which the hose is pressure-fed and injected and filled.

[0008]

In the EPS method using a large-sized styrofoam block, there is a problem that the styrofoam blocks to be stacked are displaced from each other, and it is difficult to ensure drainage, and it is difficult to cope with existing buried objects such as piping. There is. In addition, there is a problem as industrial waste.

The FCB method using aerated cement has fluidity, requires preparation work such as formwork work, a curing period, and requires a long construction time.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, to achieve a reduction in weight, and to use a glass waste material to make effective use of resources and to form a ground excellent in strength. An object of the present invention is to provide a lightweight soil cement using waste material and a method for applying the same.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lightweight soil cement utilizing glass waste material by adding a foaming material to a glassy waste material powder obtained by pulverizing glass waste material such as bottle glass or plate glass. , That the cement-based solidifying agent was added to the mixed soil of the vitreous foam and the soil that had been crushed by heat treatment, and that the soil was sandy soil, or loam soil, In addition, the glassy waste material powder has a gist that a small amount of finely ground glass powder is mixed with coarsely ground glass powder.

As a method of applying a lightweight soil cement utilizing glass waste material, a foaming material is added to a glassy waste material powder obtained by pulverizing glass waste material such as a bottle glass or a sheet glass, and then heat-treated to form a crushed glassy foam. A lightweight soil cement is prepared by adding a cement-based solidifying material to a mixed soil obtained by mixing the soil with the soil, and the lightweight soil cement is spread, compacted and compacted, or glass waste material such as bottle glass or plate glass The foaming material is added to the crushed vitreous waste powder, the crushed vitreous foam is mixed with the soil by heat treatment, and the mixture is fluidized by adding water and cement-based solidifying material to the mixed soil. In addition, the soil must be sandy or loamy, and in addition to vitreous waste powder, a small amount of finely ground glass should be distributed to coarsely ground glass. It is an Abstract that is formed by.

According to the first aspect of the present invention, the vitreous foam is produced by using a vitreous waste material.
It can be obtained at a low manufacturing cost by effective use of resources, and there is no concern about environmental pollution when recycling, which is suitable for environmental conservation. Vitreous foam is a crushed stone, which can be mixed with soil in the same way as gravel and crushed stone to obtain a lightweight mixed soil.In addition, the addition of cement-based solidification material enhances the strength. realizable. In this way, the crushed vitreous foam is mixed with the soil to form a lightweight soil cement, so it is possible to suppress the subsidence of the ground on soft ground, and no ground improvement is required depending on the ground conditions. Becomes In addition, in the case of the steep embankment, the embankment can be steeply steep, construction is easy, the construction period can be shortened, and construction on relatively weak ground is possible.

The crushed glassy foam is not very light like styrofoam and is suitable for sufficiently mixing with soil.

According to the fifth aspect of the present invention, in addition to the above operation, by laying, rolling and compacting,
The ground can be easily formed in the density ρd = 0.8 to 1.6 t / m ³ .

According to the sixth aspect of the present invention, the operation is substantially the same as the above-mentioned operation, but in addition to this, it is fluidized and cast, whereby the floor is flattened, compacted, and compacted. It is possible to work on narrow and complicated parts that cannot be done.

According to the second and seventh aspects of the present invention, it is most suitable to obtain a permeable ground by making the soil sandy. According to the third and eighth aspects of the present invention, since the soil is a loam soil, it is optimal for obtaining impermeable ground.

According to the third and ninth aspects of the present invention, in addition to the above function, the vitreous waste material powder is obtained by blending a small amount of finely ground glass powder with coarsely ground glass powder. As a vitreous foam, it is a very lightweight and small water-absorbent foam glass body having large independent pores.

[0019]

Embodiments of the present invention will be described below in detail. FIG. 1 shows a lightweight soil cement 13 using waste glass of the present invention. In FIG. 1, reference numeral 1 denotes a crushed stone used as a lightweight soil material having a density of 1.2 g / cm ³ or less and a water absorption of 20%.
The following vitreous foams are used. A cement-based solidifying material 3 is added to a mixed soil obtained by mixing the vitreous foam 1 and the soil 2.
Was added.

The soil 2 is sandy soil as the first embodiment,
The embodiment is a loamy soil which is a cohesive soil, and any locally generated soil can be used. Further, as the cement-based solidifying material 3, cement, cement milk or mortar is suitable.

First, the vitreous foam 1 will be described. The vitreous waste material is pulverized by using a commercially available glass pulverizer, for example, an impact type pulverizer such as a hammer mill, and the pulverized material is sieved. 96% or more of coarsely ground glass powder having a particle size distribution of 0.21 mm or more and 2.38 mm or less and 0.2
The starting material is a glassy compound powder having a particle size distribution of less than 1 mm and a glass powder of 4% or less.

Examples of the vitreous waste material include discarded glass bottles, plate glass, window glass, front glass panels of televisions and personal computers, and scraps from glass product factories. When viewed as vitreous, these waste materials include silicate glass, aluminoborosilicate glass, borosilicate glass, aluminosilicate glass, and the like. Of such vitreous waste materials, glass bottles,
Plate glass and window glass waste can be recovered in a relatively large amount, and can be produced in large quantities, which is advantageous.

A powder mixture obtained by adding and mixing 0.1 to 3% by weight of silicon carbide as a foaming material with respect to the glassy compound powder is heated and fired to a temperature higher than the softening point of the glass, and then cooled.

As described above, it is necessary to prepare a vitreous blended powder obtained by blending a small amount of finely ground glass powder with coarsely ground glass powder, for example, such that the finely ground glass powder having a particle size of less than 0.21 mm is not mixed at all. When only the coarsely ground glass powder having a particle size distribution of 2 mm or less is used as a raw material,
As shown in (a), (b), (c), and (d), at room temperature before heating, a gap G formed by being surrounded by coarse particles C that are in contact with each other.
Is because the coarse particles G have poor sinterability, and at the sintering temperature of 500 to 600 ° C., the coarse particles still do not sufficiently sinter, so that no clogging holes are formed, and the gas generated from the coarse particles Escapes outside. Thereafter, at a sintering temperature of 700 ° C., the sintering between the coarse particles is sufficiently performed, and the void G is closed, and an isolated pore (independent pore) P is generated, but its size is extremely small. Further, at the time of firing at a temperature of 700 ° C. or more, since the gas in the independent pores P is already small, the pores P do not increase and remain small, so that large independent pores cannot be obtained.

On the other hand, when heating and sintering are performed in the state where finely ground glass powder of 0.2 mm or less is interposed between coarse glass powder of about 2 mm as in the present invention, FIG.
The process proceeds as shown in (C) and (D). At that time, at room temperature before heating, the relatively large voids G formed in the state where the fine particles F are interposed between the coarse particles C are easily sintered at a sintering temperature of 500 to 600 ° C. Therefore, each coarse particle C in contact with the fine particles F sinters each other even at the low sintering temperature of 500 to 600 ° C., the void G is closed, and the surrounding wall W is formed. A large isolated pore P containing gas generated from particles is generated.

The softening sintering further proceeds at a higher temperature of 700 ° C., and the coarse particles fuse to form a good fusion wall W surrounding the closed pores P, thereby enclosing the pores and Maintain a large P. If the temperature further rises to 700 ° C. or higher, the gas in the pores P expands, so that the closed cells P expand to become large independent pores P, and an extremely lightweight foam glass body having a small water absorption is obtained. Thus, by the addition of the fine glass powder of the present invention, for example, the thermal expansion of the pore P is added from the filling state B at room temperature of the mixed powder having a porosity of 40%, and p = 1. About 2 sintered foams can be produced.

The addition of the silicon carbide forms a closed cell P closed by the closing wall W in FIG. 2C, the temperature is raised to 700 ° C. or more, and the gas expands as shown in FIG. In order to maintain the state, a small amount of silicon carbide is added, so that the closed wall W does not rupture due to internal gas expansion and becomes continuous pores, and the closed wall W expands strongly while resisting strongly. This is because it serves as a wall reinforcing agent.

Then, 0.1 to 3% by weight of silicon carbide is added to the glassy mixed powder blended as described above, and a mixed powder is prepared. Then, it is heated to the above-mentioned firing temperature of 500 ° C. or more, heated as described above, and heated to at least 700 ° C. or more, and then cooled by rapid cooling or slow cooling to cover with the tough vitreous wall W. A glassy foam 1 having countless large closed cells and a bulk specific gravity of 13.2 g / cm ³ or less and a water absorption of 20% or less is obtained.

Although silicon carbide is usually produced from silica sand mainly composed of coke and silicon oxide, the silicon carbide used for this purpose does not necessarily have to be sufficiently purified. For example, it may have a purity of about 85%, or may be recovered as a fine powder during manufacture by a back filter or the like.

The reason why the addition amount of silicon carbide is limited to 0.1 to 3% by weight based on the compounded glass powder is that the addition amount is 0.1% by weight.
When the content is less than 1% by weight, it is difficult to produce a product having a bulk specific gravity of 1.2 g / cm ³ or less and having sufficient lightweight characteristics. On the other hand, a product having sufficient lightweight properties can be produced even if the addition amount exceeds 3% by weight. However, since the unit price of the product is high and is not preferable, it is economically limited to 3% by weight.

Regarding the fact that the compounded glass powder is heated and fired at a temperature higher than its glassy softening point, the softening point differs depending on the type of each glass raw material. In the case of silicate glass, the temperature is generally 750 ° C. or higher, and a particularly preferable temperature range is 840 to 980 ° C. Since it is uneconomical to use unnecessary energy at a high temperature exceeding 980 ° C., it is possible to keep the temperature up to 980 ° C. to reduce the production cost as much as possible and obtain an inexpensive vitreous foam 1.

The above-mentioned compounded glass powder can be formed into a plate-like molded product such as a brick or a wall material by gradual cooling after being placed in a predetermined molding mold and heated and calcined. Cracks are formed in the molded body, and the resulting vitreous foam 1 is broken into irregularly shaped blocks as shown in FIG.

Further, according to the present invention, the above-mentioned compounded glass powder to which silicon carbide is added in an amount of 0.1% by weight or more is further added with 0.05 to 2% by weight of calcium carbonate or carbonate based on the compounded glass powder. A mixed powder obtained by adding and mixing at least one of carbonates such as sodium is heated and baked to a temperature higher than the softening point of glass, and then cooled to obtain a glass material having an extremely lightweight bulk specific gravity of lg / cm ³ or less. The foam 1 is reliably obtained. If the amount is less than 0.05% by weight, the above-mentioned effect cannot be obtained.

The operation of heating and firing the prepared mixture powder is as follows:
It is put into a long, belt-shaped transporting form with a U-shaped cross section and a frame having a frame wall on both sides in the width direction, deposited to a predetermined height, and heated to a uniform thickness. After being charged in the furnace, it is heated and raised to the required heating and firing temperature. In this case, when the glassy material is silicate glass, 75%
The temperature is raised to 0 ° C or higher, preferably 840 ° C to 980 ° C.
For example, the time required to raise the temperature to 900 ° C. depends on the thickness of the object layer.
If it is 0 mm or 20 mm, it is preferably about 20 minutes. The high-temperature holding time after reaching the maximum temperature is set such that the holding time is long if the maximum temperature is low, and the holding time is short if the maximum temperature is high. For example, the retention time generally ranges from 30 to 0 minutes. Here, 0 minutes means that cooling is performed immediately after reaching the maximum temperature. 30
Long holding times of more than a minute are not economically favorable. In addition,
If the blended glass powder contains a large amount of water, 2
The temperature should be raised after the water content is completely evaporated at around 00 ° C.

Further, from the vitreous waste material, pottery pieces, porcelain pieces, metal, soil,
Sand, gravel and other inorganic incombustibles and plastics, paper, wood chips and other contaminants are removed, but as long as they do not interfere with the production of the lightweight foam glass product of the present invention, if they are in very small amounts, they are mixed. No problem.

After the high-temperature holding time, the cooling step is started. In the case of the irregularly shaped vitreous foam 1, the cooling is rapidly performed. Then, during cooling, the foam of a given uniform thickness cracks and breaks spontaneously and is obtained as a myriad of irregularly shaped masses of various sizes, e.g. Can be

The properties of the vitreous foam 1 include a bulk density of 0.4 g to 1.2 g / cm ³ , a water content of 0% during production,
The water absorption is around 10%. The uniaxial compression strength is 35 ~
40 Kgf / cm ² , crushing rate is about 33%, resistant to changes in temperature, heat, etc., slaking rate is about 0.1%, and abrasion loss is about 50%.

The mixing ratio (weight ratio, weight ratio) of the vitreous foam 1 and the mixed soil of the soil 2 is 1: 1, 1: 0.5, 0.1.
Various selections can be made, including three cases of 5: 1. The cement as the cement solidifying material 3 is, for example, 50 to 50 when the weight ratio between the vitreous foam 1 and the soil 2 is 1: 1.
It is about 100 kg / m ³ .

The lightweight soil cement 13 in which the vitreous foam 1, the soil 2, and the cement-based solidifying material 3 are mixed is transported by a dump truck, leveled by a bulldozer, and compacted by a load roller or a vibrating roller to obtain a density ρd = 0. 0.8 to 1.6 t / m ³
To the goal.

FIG. 4 shows an embankment made of such lightweight soil cement 13.
In the case where 26 is constructed, a dike 26 having a height of about 7.0 m is constructed on the soft ground 12.

In the case of embankment material made only of locally generated soil, if the embankment material is high in water content and soft, and if the foundation ground is soft in the soft ground 12, the embankment construction is difficult, and the embankment and foundation ground collapse, and The embankment may settle.

Therefore, the soil 2 which is a locally generated soil of the present invention is laid with a lightweight soil cement 13 in which the vitreous foam 1 and the cement-based solidifying material 3 are mixed and compacted. As a whole, the weight is reduced, the suppression of settlement is obtained, the cement-based solidified material 3 has more strength, and can cope with slip and trafficability.

Incidentally, the characteristics of the lightweight soil cement 13 are as follows. 1. Unit volume weight about 1.0 ton / m ³ 2. Strength Adhesive strength C = 5 ton / m ² Uniaxial strength qu = 20 ton / m ² 3. Permeability k = 1 × 10 ^-5 -10 ^-6 cm / sec

An in-situ test was performed on the compacted ground at the construction site. The in-situ test is a flat plate loading test on roads (J
ISA1215), on-site CBR test (JISA122)
2) A soil density test (JIS 1612) by water displacement. In addition, an attempt was made to estimate the site density using the weight drop method currently under development. The field test results are shown in Table 1 below.

[0045]

[Table 1]

Table 2 below shows the test results when compaction is performed at a density ρd = 1.0 t / m ³ , assuming that the device is actually applied on site.

[0047]

[Table 2]

According to the results of the triaxial test, the shear resistance angle is φ
= 32.6 °, and the CBR value was also 17.7%.
It satisfactorily satisfies the soil properties of high quality soil used as general backfill material and embankment material. The permeability is a value on the order of 10 °, which is good.

As a second embodiment, if loam soil is used for the soil 2, the lightweight soil cement 13 can be made to have poor water permeability.

Further, as a second embodiment, when the loam soil is used as the soil 2, the vitreous foam 1 and the soil 2
When mixing water and water, the cement-based solidifying material 3 is added to the fluidized material, and the entire lightweight soil cement 13 is fluidized. Alternatively, the vitreous foam 1 and the cement-based solidifying material 3 are added to the soil 2. At the time of addition, water obtained by adding water to fluidize the entire lightweight soil cement 13 is cast with a hopper, a hose, or the like.

The application of the lightweight soil cement 13 of the present invention can be considered as an embankment or as a backfill material. As the embankment, in addition to the embankment as a bank on the soft ground 12 in FIG. There are also embankments for constructing
FIG. 5 shows a case where the temporary road 6 is constructed on the soft ground 12. In the figure, reference numeral 25 denotes a civil engineering sheet.

FIG. 6 shows a case where an upright wall is to be constructed.
And a lightweight soil cement in which vitreous foam 1, soil 2, and cement-based solidifying material 3 are mixed as backing material.
13 is scattered, leveled, compacted by rolling and repeated to lay or fluidize and cast
And covered with pavement 5 to form a road.

FIG. 7 shows a case of a steep embankment, in which a ground 8 is excavated and a foundation 9 is installed. A support plate (wall) 7 having a retaining wall or an anchor (not shown) is set up, and a lightweight soil cement 13 in which a vitreous foam 1, soil 2 and a cement-based solidifying material 3 are mixed is scattered on the back surface and spread. Leveling and compaction by rolling are repeated to build up, or fluidized material is repeatedly poured to build up and surface pavement 5 is constructed. Construction is possible in mountainous areas where materials are difficult to carry in, reducing the earth pressure on the foundation ground and stabilizing the ground. Also in this case, there is an application of the casting in the case of fluidization.

FIG. 8 shows a case where the embankment 10 is widened, and the foundation 9 is similarly installed. A support plate (wall) 7 having a retaining wall or an anchor (not shown) is set up, and the vitreous foam 1
And light soil cement 13 mixed with soil 2 and cement-based solidifying material 3 are spread out, leveled, compacted by rolling to repeat, or laid or fluidized light soil cement 13
And the surface pavement 5 is constructed.

FIG. 9 shows a case where the existing reinforcing embankment 11 is raised. A supporting plate (wall) 7 having a retaining wall or an anchor (not shown) is set up on the existing reinforcing embankment 11, and a glass is provided on the back. Soil cement 13 comprising a mixture of porous foam 1 and soil 2 and cement-based solidifying material 3 is scattered, spread out, laid by repeating compaction by compaction, or laid by repeatedly placing a fluidized material. Stand up and apply earth covering 4.

FIG. 10 shows a case of a steep embankment using geotextiles such as expansion of a golf course and extension of a tee ground.
Is laid, and lightweight soil cement 13 in which vitreous foam 1 and soil 2 and cement-based solidifying material 3 are mixed is scattered so as to be rolled up by geotextile 23, laid down, and compacted by rolling compaction repeatedly. Vegetation soil 24 is placed on the slope, and the top is covered with loamy soil.

FIG. 11 shows a light soil cement 13 comprising a mixture of vitreous foam 1 and soil 2 and a cement-based solidifying material 3 scattered over the shelter 15 of the mountain road 14 in order to prevent rockfall. A compacted or fluidized lightweight soil cement 13 is compacted by pressure and filled, and covered with a cover soil 4.

In the case of the park embankment shown in FIG. 12, lightweight soil cement 13 in which vitreous foam 1 and soil 2 and cement-based solidifying material 3 are mixed is scattered, spread out, compacted by compaction, or The soil cover 4 is applied after the fluidized lightweight soil cement 13 is cast. FIG. 13 also shows a light soil cement 13 in which the vitreous foam 1 and the soil 2 and the cement-based solidifying material 3 are mixed similarly in the case of the head embankment in the landslide area of FIG. A hardened material or a fluidized lightweight soil cement 13 is cast and covered with soil 4.

FIG. 1 shows an example of use as a backfill material.
As shown in FIG. 4, a lightweight soil cement 13 containing a mixture of vitreous foam 1, soil 2 and cement-based solidifying material 3 is scattered as a buried pipe foundation under the pipe 16 and spread out, compacted by compaction. Repeatedly or by pouring the fluidized lightweight soil cement 13. The backfill soil 21 is filled thereon.

FIG. 15 shows a case of backfilling the periphery of the pier 17. In FIG. 15, 18 is a deep foundation, 19 is a bridge girder, and an embankment around the pier 17 is shown.
10 is excavated, and lightweight soil cement 13 in which vitreous foam 1 and soil 2 and cement-based solidifying material 3 are mixed is scattered in that portion, leveling, compaction by compaction is repeated, or fluidization is performed. The lightweight soil cement 13 is poured and filled.

FIG. 16 shows a case where the underground structure 20 is backfilled.
FIG. 17 shows the case of protecting the buried structure such as the underground structure 20. After the digging work by earth retaining is performed, the underground structure 20 by the box culvert is constructed, and the vitreous foam 1, the soil 2 and the cement-based material are formed thereon. Lightweight soil cement mixed with solidifying material 3
13 is laid out and laid to a desired thickness, and then compacted using a rolling machine such as a 1-ton vibration roller.

FIG. 18 shows a case of backfilling of an abutment. In the figure, reference numeral 22 denotes a bridge pier, and lightweight soil cement 13 obtained by mixing vitreous foam 1, soil 2, and cement-based solidifying material 3 is used as a backfill material. Spreading, leveling and compaction by rolling are repeated, or fluidized lightweight soil cement 13 is poured and filled. Covering soil 4 is applied thereon. Although not shown, similar backfilling is possible in the case of a retaining wall instead of the pier 22.

[0063]

As described above, the lightweight soil cement using glass waste material and the method of construction according to the present invention can achieve weight reduction, and the use of glass waste material enables effective use of resources and has a strong strength. It can form an excellent ground.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a lightweight soil cement using waste glass materials and a method of applying the same according to the present invention.

FIG. 2 is an explanatory view showing a manufacturing principle of a vitreous foam.

FIG. 3 is a perspective view of a vitreous foam.

FIG. 4 is a vertical sectional front view showing an example of a case where a bank body is constructed on soft ground as embankment.

FIG. 5 is a vertical sectional front view showing another example in the case where the embankment is constructed on soft ground.

FIG. 6 is a vertical sectional front view in the case of constructing an upright wall as an embankment.

FIG. 7 is a vertical sectional front view in the case of a steep embankment.

FIG. 8 is a vertical sectional front view in the case of widening an existing embankment as the embankment.

FIG. 9 is a vertical sectional front view in the case of raising a reinforced embankment as an embankment.

FIG. 10 is a vertical sectional front view in the case of a steep embankment.

FIG. 11 is a vertical sectional front view in the case of a falling rock buffer.

FIG. 12 is a vertical sectional front view in the case of park embankment.

FIG. 13 is a vertical sectional front view in the case of head embankment in a landslide area.

FIG. 14 is a vertical sectional front view in the case of a buried pipe foundation as backfill.

FIG. 15 is a longitudinal sectional front view in the case of backfilling around a pier as backfilling.

FIG. 16 is a longitudinal sectional front view in the case of backfilling a structure as backfilling.

FIG. 17 is a vertical cross-sectional front view in the case of protecting the buried structure as backfill.

FIG. 18 is a longitudinal sectional front view in the case of backfilling of an abutment as backfilling.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vitreous foam 2 ... Soil 3 ... Cement-based cement 4 ... Covering soil 5 ... Pavement 6 ... Temporary road 7 ... Bearing plate 8 ... Ground 9 ... Foundation 10 ... Embankment 11 ... Reinforcement embankment 12 ... Soft ground 13 ... Lightweight soil cement 14 ... Mountain road 15 ... Shelter 16 ... Pipeline 17 ... Pier 18 ... Deep foundation 19 ... Bridge girder 20 ... Underground structure 21 ... Backfill soil 22 ... Pier 23 ... Geotextile 24 ... Vegetation soil bag 25 ... Civil sheet 26 ... Embankment

Claims (9)

[Claims] 1. A foamed material is added to a vitreous waste powder obtained by pulverizing glass waste such as bottle glass or plate glass, and a cement-based solidified material is added to a mixed soil of a vitreous foam and soil that has been heat-treated to form a crushed stone. Lightweight soil cement using waste glass, characterized by the addition of water. 2. The lightweight soil cement utilizing waste glass material according to claim 1, wherein the soil is sandy soil. 3. The lightweight soil cement utilizing glass waste material according to claim 1, wherein the soil is loamy soil. 4. The lightweight soil cement utilizing glass waste material according to claim 1, wherein the glassy waste material powder is obtained by mixing a small amount of finely ground glass powder with coarsely ground glass powder. 5. A cementitious solidification of a mixed soil obtained by adding a foaming material to a glassy waste powder obtained by pulverizing glass waste such as a bottle glass or a sheet glass and mixing a vitreous foam formed into a crushed stone by heat treatment with soil. A method for constructing a lightweight soil cement using waste glass, characterized by adding a material to produce a lightweight soil cement, leveling, compacting and compacting the lightweight soil cement. 6. A mixed soil obtained by adding a foaming material to a vitreous waste material powder obtained by pulverizing glass waste material such as bottle glass or plate glass, and mixing a vitreous foam formed into a crushed stone by heat treatment with water and cement. Mixing and fluidizing while adding the system solidifying material,
A method for constructing lightweight soil cement using waste glass, characterized by casting it. 7. The lightweight soil cement utilizing waste glass material according to claim 5, wherein the soil is sandy soil. 8. The lightweight soil cement utilizing glass waste material according to claim 6, wherein the soil is loamy soil. 9. The method of claim 5, wherein the vitreous waste powder is obtained by mixing a small amount of finely ground glass powder with coarsely ground glass powder. .