JP3453529B2 - Shielding material and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielding material for preventing a component derived from a substance placed on the ground or the like from entering the ground or the like, and the shielding material. Related to the construction method of.

[0002]

2. Description of the Related Art Shielding materials (protective materials) are used exclusively for waste disposal sites, etc., when constructing a waste disposal site by using depressions in mountainous areas, sites of sediment collection, coastal landfills, etc. The shielding material is spread over the entire surface of the ground, and waste is dumped on the shielding material.

The reason why the shielding material is spread is to prevent harmful substances derived from waste from seeping into the ground and causing soil contamination, ground water contamination, etc. Therefore, the shielding material is chemically stable. Therefore, it is required to have the property of not being damaged by various substances, having high mechanical strength, not being damaged, and being capable of completely blocking / blocking water for a long period of time.

As a conventional shielding material, a sheet made of an organic polymer such as polyvinyl chloride resin, vulcanized rubber resin, high density polyethylene resin, urethane resin is used. The waste tank is formed by laying it in a single layer or multiple layers and joining the ends of each sheet.

In addition to the method of transporting the sheet manufactured in the factory to the construction site as described above, a method of forming the resin raw material into a sheet at the construction site is also adopted. According to this method, A non-woven fabric as a base material is spread over the surface of the ground, and a liquid polyethylene resin raw material or urethane resin raw material is sprayed on it to be solidified to form a shielding material layer.

[0006] Concrete may be used as another shielding material, and waste is stored by a hardened concrete wall.

[0007]

However, the above-mentioned conventional shielding materials have not been satisfactory yet. That is, for example, in a polyvinyl chloride-based resin shielding sheet, the plasticizer and the like causes bleeding (diffusion movement) during many years of use, and the mechanical strength of the shielding material itself decreases.
The plasticizer and the like bleeding on the surface of the shielding material may elute from the sheet and contaminate soil, groundwater, etc., which may adversely affect the surrounding environment. In the case of organic polymer sheet,
There is a common problem that it is easily damaged by the contact of sharp corners such as stones and rocks.

Further, regarding the shielding sheet made of vulcanized rubber resin, although the sheets themselves are excellent in mechanical strength, the heat fusion property between the sheets is poor, and therefore the strength of the sheet joint is insufficient, resulting in a gap. May occur. A method of joining the sheets with an adhesive or the like can be considered, but strong adhesion cannot be maintained for a long period of time.

Since the sheet of the high-density polyethylene resin shielding material is hard, the workability is particularly poor at the site where there are irregularities or slopes, and the operator is required to have a high degree of skill.

Since concrete walls are poor in flexibility,
When the ground undergoes uneven settlement, there is a problem in that stress is biased and cracks occur.

In any case, the above-mentioned conventional shielding material has a problem that once a hole is opened, liquid components derived from waste, particularly various harmful substances, flow out from the hole and continue to adversely affect the environment. is there.

Therefore, a shielding sheet having a self-repairing function has been proposed. The sheet is a laminated sheet in which a water-swelling rubber is sandwiched between two layers of synthetic rubber, and when a nail or the like pierces the laminated sheet to open a hole, water enters through the hole and touches the water-swelling rubber of the intermediate layer. The water-swelling rubber absorbs water and expands to block the holes.

However, in the laminated sheet, the above-mentioned synthetic rubber constituting both the front and back layers has a problem in the strength of the sheet joint portion like the shielding material made of the vulcanized rubber resin.

The present invention has been made in view of the above problems, is excellent in mechanical strength, durability, etc., does not elute from the shielding material itself, and enables the sheets to be joined to each other favorably. It is an object of the present invention to provide a shielding material that is easy to remove. Furthermore, it aims at providing the shielding material which can be self-closed even if a hole is opened.

[0015]

The shielding material according to the first aspect of the present invention is one in which a titanium or titanium alloy plate is disposed on the surface of a smooth and strong ground or a ground-reinforced concrete or a concrete structure. The point is that there is.

[0016] For example, in a waste disposal site, a dump truck or the like carrying waste travels over the shielding material or over the waste dumped on the shielding material, and the waste is roughly discarded (shielding material). It often happens that the object is dropped on a shock. Therefore, the shielding material is required to have the property of absorbing and expanding such an external stress and the mechanical strength sufficient to withstand the external stress.

In this respect, the shielding material of the first invention is
Titanium or a titanium alloy plate (hereinafter sometimes referred to as a titanium plate) is used on the surface of a smooth and strong ground or a ground or concrete structure that has undergone ground reinforcement treatment. It is expected to exhibit a mechanical strength sufficient to withstand the above and retain the shielding function. In order to exert the necessary strength, the titanium plate preferably has a plate thickness of 0.1 mm or more, more preferably 0.3 mm or more. On the other hand, if the titanium plate is too thick, the cost will increase. The thickness is preferably 10 mm or less, more preferably 1 mm or less, but it is desirable to appropriately set the plate thickness according to the use environment and use conditions.

In addition, since the titanium plate is excellent in corrosion resistance and chemical resistance, it is unlikely that holes will be opened due to rust or corrosion, and since it is also excellent in durability and weather resistance, it may be destroyed even if it is used for many years. It is expected that the shielding effect will last longer than the conventional resin shielding material.

Further, since the titanium plates can be completely joined by welding and the strength of the joined portion is sufficient, there is little risk of forming a gap in the joined portion even if the plate pieces are joined.

The ground that has been subjected to the soil strengthening treatment includes, for example, the soil treatment with cement, and the smooth and strong soil means that the soil is originally strong without the strengthening treatment.

Alternatively, the gist of the shielding material according to the second invention is that a plastic fluid material layer is formed on the surface of a titanium or titanium alloy plate.

As described above, since the shielding material of the present invention uses a titanium or titanium alloy plate (hereinafter, these may be representatively referred to as a titanium plate), it is mechanically capable of withstanding the above external stress. It can be expected to exert strength and maintain the shielding function. In the second aspect of the present invention as well, the titanium plate preferably has a plate thickness of 0.1 mm or more, more preferably 0.3 mm or more, in order to exert the necessary strength, and if it is too thick, the cost is increased. Since it becomes high, plate thickness 1
The thickness is preferably 0 mm or less, more preferably 1 mm or less, but it is desirable to appropriately determine the plate thickness according to the use environment and use conditions.

In addition, as described above, the titanium plate has corrosion resistance,
Since it has excellent chemical resistance, durability, and weather resistance, it is unlikely that holes will open, and it will hardly decay even after long-term use, and it is expected that the shielding effect will continue for a long time. Further, since it is possible to completely join by welding and the strength of the joined portion is sufficient, there is not much possibility of forming a gap in the joined portion.

However, in some cases, sharp objects such as nails contained in the waste may pierce the titanium plate almost vertically, and holes may be opened in the titanium plate. It follows the nails and the like, flows into the hole, and is filled so as to close the gap (hole). In this way, the holes opened in the titanium plate are also self-repaired, so there is little risk that harmful substances derived from waste will leak from the shielding material.

The above-mentioned plastic flowable substance preferably has a viscosity at 20 ° C. of 10 ² to 10 ¹⁰ poises, more preferably 10 ³ poises (20 ° C.) or higher and 10 ⁸ poises (20 ° C.) or lower. is there. With such a viscosity, it is possible to exhibit good plastic flow and flow into the hole to stay in the hole portion and close the hole, but use a suitable viscosity according to the use environment and use conditions. Is desired. The thickness of the plastic flowable material layer is preferably 0.5 mm or more, more preferably 1 mm or more. This is because if the thickness is too thin, it is not possible to secure a sufficient amount to close the hole, but it is preferable to set the thickness to be thicker or thinner according to the usage environment and usage conditions.

Further, a combination of the first invention and the second invention is preferable, that is, a titanium or titanium alloy plate is provided on the surface of a smooth and strong ground or a ground-reinforced ground or a concrete structure. It is preferable to dispose them and further to form a plastic fluid material layer on the surface of the titanium or titanium alloy plate.

In addition, in the first and second inventions, it is preferable that an oxygen blocking and ultraviolet blocking layer is formed on the plastic flowable material layer.

Since the plastic flowable substance is generally an organic substance, it may be hardened or brittle by ultraviolet rays or oxygen and lose its fluidity. Therefore, by forming an oxygen-blocking and ultraviolet-blocking layer to cover the plastic flowable substance as described above, it is possible to block ultraviolet rays and oxygen, and to maintain the plastic flowability of the plastic flowable substance for a long period of time. it can. Examples of the oxygen-blocking and ultraviolet-blocking layer include acrylic resin sheets and vinyl chloride resin sheets.

The plastic flowable substance is preferably an asphalt-based substance. Since the asphalt-based substance has good adhesion to the titanium plate, uneven coating does not occur on the entire surface of the coated titanium plate. Therefore, no matter which part of the titanium plate the hole is formed in, the asphalt-based substance on the hole or in the vicinity thereof flows in, and the self-repair can be performed as described above.

The plastic flowable substance may be a synthetic resin other than the asphalt-based substance, for example, a resin having a glass transition point of 30 ° C. or lower (low-crosslinking polyurethane type, acrylic type, ethylene vinyl acetate type resin, etc.). Is mentioned.

Further, in the first and second inventions, it is desired that the plastic flowable substance such as the asphalt-based substance contains a thermoplastic rubber-based substance. By adding the thermoplastic rubber-based material to the asphalt-based material or the like, it is possible to maintain good fluidity and tackiness without curing the asphalt-based material even in a cold environment. In the present specification, the “asphalt-based substance” also includes asphalt containing a thermoplastic rubber-based substance.

Examples of the thermoplastic rubber-based material include synthetic rubber such as isoprene rubber and butylene rubber. The content of the thermoplastic rubber-based material is 5 w / w% or more and 30 w / w.
% Or less, more preferably 10 w / w% or more, 2
Although it is 5 w / w% or less, it may be appropriately set according to the usage environment and usage conditions.

The shielding material construction method according to the third aspect of the present invention is
Placing a large number of titanium or titanium alloy plates on the surface of the ground, joining the ends of each titanium or titanium alloy plate by welding to shape as necessary, and forming a plastic flowable material layer on each titanium or titanium alloy plate The main point is to form.

By welding as described above, the titanium plates are firmly joined together without any gaps, and the risk of leakage from the joined portion is extremely small. As the above-mentioned welding method, seam welding can be mentioned. Since the seam welding method has a simple method, it can be applied relatively easily and inexpensively even at a site having irregularities or slopes, and it is possible to weld without a gap.

Since the titanium plate can be plastically deformed, it can be arranged so as to follow the unevenness and inclination of the ground surface.

As a method for forming the layer of the plastic flowable substance, for example, there is a method of applying the plastic flowable substance on the titanium plate. Construction by such a coating method is simple.

Further, in the construction method according to the third aspect of the present invention, it is preferable that an oxygen blocking and ultraviolet blocking layer is formed on the plastic flowable material layer. Examples of the oxygen-blocking and ultraviolet-blocking layer include a resin film and the like, and examples of the method for forming the resin film include affixing a film and coating a resin raw material.

Further, in the construction method according to the third aspect of the present invention, it is preferable that at least the surface layer portion of the ground is subjected to a ground strengthening treatment before the titanium or titanium alloy plate is placed on the ground surface.

Alternatively, in the construction method according to the fourth aspect of the present invention, at least the surface layer portion of the ground is subjected to ground strengthening treatment, and a large number of titanium or titanium alloy plates are arranged on the ground subjected to the strengthening treatment. The gist of the invention is to join the ends of the titanium or titanium alloy plates by welding and shape them as necessary.

If the ground surface is soft, when the sharp material contained in the waste penetrates the shielding material, there is no resistance on the ground surface so that the shielding material can easily penetrate through the shielding material. Although a large hole will be opened, when the ground surface layer portion is subjected to ground strengthening treatment as in the present invention, the ground surface becomes a resistance, and the sharp object penetrates deeply into the shielding material. No more holes and therefore only small holes. In the case where the plastic flowable material layer is formed (third invention), the generated pores are blocked by the plastic flowable material flowing in as described above, but the smaller pores still cause the blockage. Since it can be completely performed, it is desirable to perform the ground strengthening treatment as described above.

Further, it is preferable that the soil strengthening treatment is performed by soil treatment with cement. As the ground treatment with cement, for example, a method in which cement is mixed with soil in the ground surface layer and compacted by compaction, or a method in which a mixed liquid of cement and water is injected into the ground to solidify the soil (deep mixing treatment method) , Or a combination thereof.

The compressive strength of the ground surface subjected to the above ground strengthening treatment is preferably 1 kg / cm ² or more (more preferably 3 kg / cm ² or more), and the ground proof stress is 3 t / m ² or more (more preferably 10 t / m ² ). m ² or more) is preferable, but it is desired to appropriately set these according to the use environment and use conditions.

In the construction method according to the third aspect of the present invention, prior to disposing the titanium or titanium alloy plate on the ground surface, concrete is cast on the ground surface to form a concrete structure. preferable.

Alternatively, in the construction method according to the fifth aspect of the present invention, concrete is cast on the ground surface to form a concrete structure, and a large number of titanium or titanium alloy plates are arranged on the concrete structure. Then, the gist is that the ends of the titanium or titanium alloy plates are joined by welding and shaped as necessary.

Similarly to the above, even when a sharp object pierces the titanium plate, the concrete structure becomes a resistance and does not pierce deeply, so that no holes or only small holes can be opened. As in the above, in the third aspect of the present invention, it can be said that the pores are blocked by the flow of the plastic flowable substance, but the smaller pores can completely block the holes. It is desirable to form a thing.

The compressive strength of the concrete structure is 1 kg / cm ² or more (more preferably 3 kg / cm ²⁾ as described above.
Or more), and the ground strength is preferably 3 t / m ² or more (more preferably 10 t / m ² or more), but it may be appropriately set according to the use environment and use conditions.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the shielding material according to the present invention will be specifically described with reference to examples, but the present invention is not limited to the examples and is not limited to the examples. It is also possible to make appropriate modifications and implement them within a range that is compatible with the gist, and all of them are included in the technical scope of the present invention.

Example 1 FIG. 1 is a sectional view showing a waste disposal site using a shielding material according to Example 1 of the present invention. A pure titanium plate 11 having a plate thickness of 0.4 mm is arranged on the entire inner wall surface of the ground 10 which has been subjected to smooth and strong ground strengthening treatment, and an asphalt-based substance 12 is applied to the pure titanium plate 11 to a thickness of 1 mm. The asphalt-based material 12 is, for example, 2 parts of asphalt with isoprene rubber having a glass transition temperature of -40 ° C.
The content was 0 w / w%. The upper end of the depression is
The pure titanium plate 11 is fixed by coating with concrete 18. On the shielding material constructed in this way,
Waste 13 is dumped.

An example of a method for constructing the above waste disposal site will be described below. First, the land to be used as a disposal site is improved. That is, cement and water are mixed with the soil of the surface layer on the entire inner wall of the land with depressions, and it is compacted by compaction.
The improved ground 10 (ground that has undergone ground strengthening treatment).

Next, a strip-shaped pure titanium plate 11 having a plate thickness of 0.4 mm and a width of 1200 mm is arranged on the improved ground 10, and the ends of the pure titanium plates 11 are appropriately seam welded and joined.

FIG. 2 is a perspective view for explaining the seam welding method. The end portions 11a of the two pure titanium plates 11 are raised by about 2 cm, and the end portions 11a are overlapped with each other. Two rotating electrodes 15 sandwich the overlapped end portion 11a, rotate in the arrow A direction while pressing in the arrow P direction, and proceed in the arrow B direction. At this time, the rotary electrode 15 is energized and the pure titanium plate 11 is welded. 1
4 is a seam weld.

The pure titanium plate seam-welded as described above is formed in a state in which the joint portion (end portion 11a) is raised. There is a concern that the strength of the part will be weakened. However, if the root portion is rounded, there is no such concern, and the risk of forming a weak spot is reduced.

After the welding is completed, it may be left in a standing state or may be folded on one of the titanium plates.

FIG. 3 is a perspective view for explaining the welding method when the welding points intersect. The rising portion (joint portion) of the previously welded pure titanium plate end portion 11a is tilted down so as to be folded into one of the titanium plate sides, and then the end portions 11a of the welded portions are respectively raised and stacked in the same manner as described above. , Seam welding. The convolution does not have to be performed on all of the rising portions welded first, but may be performed only on the portion to be welded next.

In this way, the pure titanium plate 11 is spread over the entire surface of the ground to be the disposal site, and if necessary, the pure titanium plate 11 is shaped so as to follow the ground shape.

Next, by coating the entire surface of the pure titanium plate 11 with the asphalt-based substance 12 to a thickness of 1 mm, a disposal site with a shielding material spread can be completed.

Since the asphalt-based substance 12 applied to the inclined surface descends by its own weight, it may be partially peeled off above the inclined surface depending on the inclination angle and the like. In this case, a net may be arranged on the surface of the titanium plate, and the asphalt-based substance may be entangled with the net to prevent the asphalt-based substance from falling. When the net is used as described above, the asphalt-based substance can be retained on the surface of the titanium plate even if the titanium plate is erected almost vertically.

Next, the titanium plate 11 is made with a sharp object such as a nail.
How the shielding material of the present invention self-repairs when a hole is opened will be described.

FIG. 4 is a sectional view showing this state.
A hole 17 is opened in the pure titanium plate 11 of the shielding material by 6. When the nail 16 is stuck in this way, the asphalt-based substance 1
2 follows the nail 16 and flows into the hole 17 (arrow C) to close the hole 17. Therefore, waste-derived harmful substances and the like do not leak to the ground 10.

<Second Embodiment> FIG. 5 is a sectional view showing a waste disposal site using a shielding material according to a second embodiment of the present invention. In the second embodiment, an acrylic resin sheet 19 is further laid on the shielding material of the first embodiment.

In the second embodiment, since the acrylic resin sheet 19 blocks light (ultraviolet rays) and air (oxygen), curing of the asphalt-based substance 12 is prevented,
It can remain fluid over a long period of time.

The improved ground 1 in Examples 1 and 2 above.
In place of 0, a concrete structure may be provided, for example, concrete may be poured smoothly into a thickness of about 50 mm. Further, concrete may be placed on the improved ground 10 (ground that has been subjected to ground strengthening treatment).

In Examples 1 and 2 described above, the case where the asphalt-based substance 12 is applied to a thickness of 1 mm is shown, but this thickness may be appropriately set according to the use environment and use conditions, and is 0.5 mm. Of course, it may be 1 mm or more. Next, a test performed on the shielding material according to the present invention will be described.

[Pebble Method Protrusion Resistance Test] FIG. 6 is a sectional view showing a gravel method projection resistance test apparatus. Put the gravel 21 into the lower side of the cylindrical container 20 having a diameter of 200 mm and squeeze it, place the test material (shielding material) 22 on the gravel 21, and sandwich the both sides of the test material 22 to the lower side of the container 20. And the upper side with bolts 23 to stop and seal. At this time, the test material 22 is placed so that the surface coated with the asphalt-based substance is in contact with the gravel 21 side.

After water 24 was poured on the test material 22 and it was confirmed that there was no leakage, air was blown from the suction port 25 to pressurize the water 24 (30 t / m ² (3 kgf / cm ² )) to leak water. Check for the presence of cracks in the test material.

The gravel 21 is round and has a size.
Tests were carried out in each case using the ones having a size of 10 to 20 mm, the ones having a size of 20 to 30 mm, the square shapes having a size of 10 to 20 mm, and the ones having a size of 20 to 30 mm.

[Constant Angle Cone Method Projection Resistance Test-Part 1
(No Hole)] FIG. 7 is a cross-sectional view showing a constant angle cone method protrusion-resistant tester. The constant angle cone 27 is placed on a flat table 26, and the test material 22 is placed on the flat table 26 so that the asphalt-based substance-coated surface is in contact with the constant angle cone 27. A cylindrical upper container 28 (diameter 200 mm) is bolted and sealed. The constant angle cone 27 is a conical type having a top angle of 60 ° C. and a height of 20 mm, and the radius at the tip of the top is 0.1 mm.

Water 24 was sprayed on the test material 22, and after confirming that there was no leakage, air was blown from the suction port 25 to pressurize the water 24 (30 t / m ² (3 kgf / cm ² )), and the water leaked. Check for the presence of cracks in the test material 22.

[Constant Angle Cone Method Projection Resistance Test-Part 2]
(With holes)] FIG. 8 is a cross-sectional view for explaining this test method. Same as the above, the flat table 26 and the constant angle cone 2
7 is placed, and the test material 22 is placed thereon so that the surface coated with the asphalt-based substance contacts the constant angle cone 27. Next, the test material 22 is pierced by the constant angle cone 27, and a hole having a diameter of about 2 cm is opened. Then, while sandwiching both sides of the test material 22, the base 26 and the cylindrical upper container 28
Bolt (200 mm radius) and seal. The constant-angle cone 27 is the same as in the above-mentioned test method 1, that is, it is a conical type having a top angle of 60 ° C. and a height of 20 mm, and its top end has a radius of 0.1 mm.

Next, water 24 is sprinkled on the test material 22, air is blown from the suction port 25 to pressurize the water 24 (30 t / m ²
(3kgf / cm ² )), check for water leaks and for new cracks.

The temperature condition in each of the above tests was 0 ° C.
And two conditions of 20 ° C. In the 0 ° C. test, a small amount of diethylene glycol as an antifreezing agent was added to the water 24.

A plate thickness of 0.4 mm was used as a test material in the above-mentioned gravel method and constant angle cone method projection resistance test (No. 1 and No. 2)
Asphalt-based material (20w / w
% Asphalt containing 1% isoprene rubber)
What was applied to (Test material No. 1) and what was applied to the thickness of 5 mm (Test material No. 2) were used.

Table 1 below shows the results of the gravel method projection resistance test and the constant angle cone method projection resistance test-No. 1 (without holes) and No. 2 (with holes).

[0074]

[Table 1]

As can be seen from Table 1 above, test material No. 1,
No cracks or water leaks were found in both samples, and the shielding effect is excellent.

Moreover, even when the test material was pre-drilled as in the constant angle cone method No. 2 (with holes), cracking of the pure titanium plate did not proceed further and water leakage occurred. The result is that it is a shielding material having self-repairing property. Next, the puncture test will be described.

[Puncture Test] FIG. 9 is a diagram for explaining this puncture test method. A cone 31 having a cross-sectional diameter of 2.5 mm and a radius of 0.1 mm at the tip is gently pierced against the test material 32 and a load is applied to the cone 31, and the load at the time when the hole is opened in the test material 32 is defined as the piercing load .

As the test material 32 in the piercing test,
0.4mm thick pure titanium plate (test material No. 3) and 4mm thick
Using a synthetic rubber sheet (test material No. 4), a wooden frame 35
Fix the test material on the, and the clay layer (thickness 50mm) 3 under the test material.
Tests were conducted for the case where 3 was provided and the case where the concrete (thickness 30 mm) 34 was provided. The puncture test was performed three times each, and the average of the results is shown in Table 2 below.

[0079]

[Table 2]

As shown in Table 2, a pure titanium plate (test material No.
In 3), the hole does not open until a high load of 26 kg is applied, and in the case where concrete is provided under the test material,
It can be seen that the hole does not open until a high load of 59 kg is applied, and thus it is well shielded.

[0081]

The shielding material according to the first and second inventions has high strength and is excellent in durability, weather resistance and corrosion resistance. In addition, in the shielding material according to the second invention, a titanium plate is temporarily used. Even if the hole is opened, the hole is closed by the self-repairing substance due to the plastic flowable substance, so the risk of leakage of harmful substances and the like is reduced, and good shielding property is maintained. Further, in the first aspect of the present invention, since the lower part of the titanium plate is reinforced with concrete or the like, there is little risk that holes are easily opened in the titanium plate.
Therefore, the risk of adversely affecting the surrounding environment such as soil and groundwater is reduced. Such a shielding material can be used not only in a waste disposal site but also as a shielding / water shielding sheet for roofs, walls, factory wastewater treatment tanks, settling basins and the like. Further, the method for applying the shielding material according to the present invention is simple.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a waste disposal site using a shielding material according to a first embodiment of the present invention.

FIG. 2 is a perspective view for explaining a seam welding method.

FIG. 3 is a perspective view for explaining a case where welding points intersect.

FIG. 4 is a cross-sectional view showing how the shielding material of the present invention self-repairs when a hole is made in a titanium plate by a nail.

FIG. 5 is a sectional view showing a waste disposal site using the shielding material according to the second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing an apparatus for a pebbles method projection resistance test.

FIG. 7 is a cross-sectional view showing an apparatus for constant angle cone method protrusion resistance test (No. 1).

FIG. 8 is a sectional view showing an apparatus for a constant angle cone method protrusion resistance test (No. 2).

FIG. 9 is a diagram for explaining a piercing test method.

[Explanation of symbols]

10 ground 11 Titanium plate 11a end 12 Asphalt-based substances 13 Waste 14 seam welds 15 rotating electrode 16 nails 17 holes 18 concrete 19 Resin sheet 20 containers 21 pebbles 22, 32 test material 23 Volts 24 water 25 suction port 26 units 27 constant angle cone 28 Upper container 31 cones 33 Clay layer 34 concrete 35 crate

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Makoto Annobu 566-1 Kurosaki, Kurashiki City, Okayama Prefecture Takao Shoji Co., Ltd. (72) Inventor Yoshitaka Yamamoto 4- 1-3 Bingocho, Chuo-ku, Osaka Kobe Steel, Ltd. Osaka Branch (56) References JP-A-60-35298 (JP, A) JP-A-9-3855 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B09B 1/00

Claims (12)

(57) [Claims] 1. A shielding material for shielding a liquid component derived from waste.
In the surface of the smooth and firm ground or ground reinforcement treated soil or concrete structure, placing the titanium or titanium alloy plate, the titanium or the surface of a titanium alloy plate
A shielding material, characterized in that a plastic fluid material layer is formed on . 2. A shielding material for shielding a liquid component derived from waste.
2. A shielding material comprising a titanium or titanium alloy plate on the surface of which a plastic flowable material layer is formed. Wherein on said plastic flowable material layer, according to claim 1 in which oxygen-blocking property and the ultraviolet blocking layer is formed
Or the shielding material according to 2 . 4. The shielding material according to claim 1 wherein the plastic flow substance is asphalt-based material. 5. The shielding material according to claim 4 , wherein the asphalt-based substance is an asphalt containing a thermoplastic rubber-based substance. 6. A shielding material for shielding a liquid component derived from waste.
In a method for the construction stage the ground surface, a large number of titanium or titanium alloy plate is placed on the ground surface, and shaped as required by joining by welding the ends of the titanium or titanium alloy plate, each titanium or A method for constructing a shielding material, which comprises forming a plastic fluid material layer on a titanium alloy plate. 7. The method for applying a shielding material according to claim 6 , wherein an oxygen blocking and ultraviolet blocking layer is formed on the plastic flowable material layer. 8. Prior to placing the titanium or titanium alloy plate to the ground surface, the construction method of the shielding material according to claim 6 or 7 performs least ground reinforcement treatment on the surface layer portion of the ground. 9. Claim forming the titanium or prior to placing the titanium alloy plate to the ground surface, the concrete structure by Da設concrete to the ground surface 6
Alternatively, the method for applying the shielding material according to item 7 . 10. A shield for shielding a liquid component derived from waste.
A method for the construction stage the wood on the ground surface, subjected to a soil hardening at least a surface layer portion of the ground, placing a large number of titanium or titanium alloy plate on the ground which has been subjected to reinforcing treatment, the titanium or titanium A method for constructing a shielding material, characterized by joining the ends of an alloy plate by welding and shaping it as necessary. Wherein said ground reinforcing treatment, according to claim 8 or 10 is intended to be performed by the ground treatment by cement
Construction method of the shielding material described in. 12. A shield for shielding a liquid component derived from waste.
A method for the construction stage the wood on the ground surface, the on ground surface is Da設concrete to form a concrete structure, placing a large number of titanium or titanium alloy plate over the concrete structure, the titanium or A method of constructing a shielding material, characterized by joining the ends of a titanium alloy plate by welding and shaping it as necessary.