Filling material, structure containing the filling material, and method for manufacturing a structure containing the filling material

Abstract

To provide a filler capable of densifying a structure and maintaining the structure in a stable state for a long period of time by forming a salt that is sparingly water-soluble upon contact with water.SOLUTION: A filler according to the present invention includes a first resin material containing resin and a compound capable of releasing cations, and a second resin material containing resin and a compound capable of releasing anions. A sparingly water-soluble salt can be formed by a reaction between a cation released by the compound capable of releasing cations and an anion released by the compound capable of releasing anions, and the first resin material and the second resin material are not in contact with each other.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a filler that can be used for ground, concrete, etc. The present invention also relates to a structure including the filler and a method for manufacturing the structure including the filler.

Background Art

[0002] In structures such as bridges and tunnels, construction defects may occur during construction, or cracks and junkers may occur after a long period of time since construction. In structures where cracks and junkers occur, the strength of the structure decreases. Since many structures bear social infrastructure such as transportation and transportation, they cannot be easily rebuilt or demolished. In addition, large-scale repairs or reinforcements that stop the infrastructure function are difficult.

[0003] For this reason, a method may be performed in which a filler containing a curable resin such as an epoxy resin is injected into a cracked portion or a junker portion of a structure, and the curable resin is cured (for example, Patent Documents 1 to 3).

[0004] In addition, cracks may occur in the ground due to earthquakes or the like. In order to repair cracks in the ground or increase the strength of the ground, ground improvement agents such as cement-based solidifying agents are used (for example, Patent Documents 4 to 6).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Summary of the Invention

Problems to be Solved by the Invention

[0006] When repairing and reinforcing concrete structures and repairing and strengthening the ground using conventional fillers, the strength of the repaired area can be increased until a certain period of time has passed.

[0007] However, in conventional concrete fillers containing epoxy resin or the like, the cured epoxy resin gradually deteriorates due to rainwater and moisture adhering to the concrete, etc., and interfacial peeling may occur at the interface between the filler and the structure surface. Also, interfacial peeling may occur at the interface between the filler and the structure surface due to seasonal variations, repeated vibrations, and expansions and contractions. For this reason, in conventional fillers, the strength of the repaired area gradually decreases, and after a long period has passed since the repair (for example, after 20 to 50 years have passed since the repair), re-repair is required.

[0008] Also, regarding conventional ground improvement agents such as cement-based solidifying agents, after a long period has passed since the use of the ground improvement agent (for example, after 20 to 50 years have passed since the use), re-use is required.

[0009] Conventionally, there has been no known method for self-healingly repairing and strengthening the ground and existing concrete structures over a long period of time.

[0010] An object of the present invention is to provide a filler that can densify a structure and keep the structure in a long-term stable state by generating hardly water-soluble salts upon contact with water. Another object of the present invention is to provide a structure including a filler that can densify a structure and keep the structure in a long-term stable state by generating hardly water-soluble salts upon contact with water, and a method for manufacturing a structure including the filler.

Means for Solving the Problems

[0011] According to a broad aspect of the present invention, there is provided a filler comprising a first resin material containing a resin and a compound capable of releasing a cation, and a second resin material containing a resin and a compound capable of releasing an anion, wherein a hardly water-soluble salt can be formed by the reaction between the cation released by the compound capable of releasing the cation and the anion released by the compound capable of releasing the anion, and the first resin material and the second resin material are not in contact with each other.

[0012] In a specific aspect of the filler according to the present invention, the compound capable of releasing the cation is a compound capable of releasing calcium ions, and the compound capable of releasing the anion is a compound capable of releasing bicarbonate ions or carbonate ions.

[0013] In a specific aspect of the filler according to the present invention, the compound capable of releasing the cation is tricalcium silicate, dicalcium silicate, calcium aluminate, calcium aluminoferrite, calcium hydroxide, calcium oxide, calcium sulfate, calcium chloride, or calcium bicarbonate, and the compound capable of releasing the anion is calcium bicarbonate, sodium carbonate, or sodium bicarbonate.

[0014] In a specific aspect of the filler according to the present invention, the first resin material is a first curable resin material that can be cured, and the second resin material is a second curable resin material that can be cured.

[0015] In a specific aspect of the filler according to the present invention, the first resin material is a pellet, and the second resin material is a pellet.

[0016] Further, according to a broad aspect of the present invention, there is provided a structure including a filler-containing material having a plurality of pores and the above-described filler, wherein the filler is disposed in the plurality of pores, the pores in which the first resin material is disposed are different from the pores in which the second resin material is disposed, and the first resin material and the second resin material are not in contact with each other.

[0017] In a specific aspect of the structure including the filler according to the present invention, the interval between the plurality of holes is 100 mm or more and 2000 mm or less.

[0018] In a specific aspect of the structure including the filler according to the present invention, the substance to be filled is ground or concrete.

[0019] Further, according to a broad aspect of the present invention, there is provided a method for manufacturing a structure including a filler, the method including a step of disposing the above-described filler in the plurality of holes in a substance to be filled having the plurality of holes, and making the holes in which the first resin material is disposed different from the holes in which the second resin material is disposed, so that the first resin material and the second resin material do not contact each other.

[0020] In a specific aspect of the method for manufacturing a structure including the filler according to the present invention, the interval between the plurality of holes is 100 mm or more and 2000 mm or less.

[0021] In a specific aspect of the method for manufacturing a structure including the filler according to the present invention, the manufacturing method further includes a step of forming a substance to be filled having the plurality of holes by making a plurality of holes in the substance to be filled.

[0022] In a specific aspect of the method for manufacturing a structure including the filler according to the present invention, the substance to be filled is ground or concrete.

Advantages of the Invention

[0023] The filler according to the present invention includes a first resin material containing a resin and a compound capable of releasing cations, and a second resin material containing a resin and a compound capable of releasing anions. In the filler according to the present invention, a hardly water-soluble salt can be generated by the reaction between the cations released by the compound capable of releasing cations and the anions released by the compound capable of releasing anions. In the filler according to the present invention, the first resin material and the second resin material are not in contact with each other. In the filler according to the present invention, since the above configuration is provided, by generating a hardly water-soluble salt by contact with water, the structure can be densified and the structure can be maintained in a stable state for a long time.

Brief Description of Drawings

[0024]

Figure 1

Embodiments for Carrying Out the Invention

[0025] Hereinafter, the details of the present invention will be described.

[0026] (Filler) The filler according to the present invention includes a first resin material containing a resin and a compound (first compound) capable of releasing cations, and a second resin material containing a resin and a compound (second compound) capable of releasing anions. The filler according to the present invention is a set product including the first resin material and the second resin material. The filler according to the present invention is a filler kit including the first resin material and the second resin material.

[0027] In the filler according to the present invention, a hardly water-soluble salt can be generated by the reaction between the cations released by the compound capable of releasing cations and the anions released by the compound capable of releasing anions. The filler according to the present invention is a filler for generating a hardly water-soluble salt.

[0028] In the filler according to the present invention, the first resin material and the second resin material do not contact each other. In the filler according to the present invention, the first resin material and the second resin material are spaced apart. In the filler according to the present invention, the first resin material and the second resin material are arranged so as not to contact each other.

[0029] In the filler according to the present invention, since the above configuration is provided, by generating hardly water-soluble salts upon contact with water, the structure can be densified and the structure can be maintained in a stable state for a long time. More specifically, in a state where the filler is filled in the pores (voids) of a filling target substance such as ground and concrete, when the filler contacts water, hardly water-soluble salts are generated and concretions are formed. Thereby, the inside of the filling target substance can be densified and a stable state can be maintained for a long time. The present invention contributes to preventive maintenance.

[0030] The filler according to the present invention is preferably used for ground or concrete. The filler according to the present invention is preferably a filler for ground or concrete. The filler according to the present invention may be used for ground or may be used for concrete. Further, the filler according to the present invention can also be applied to the overlapping gaps of sand, rock, aggregate, etc. in the ground.

[0031] In this specification, "hardly water-soluble salt" means that when 1 g of hardly water-soluble salt is put into 100 g of water and held at 20 ° C for 10 minutes, the amount of hardly water-soluble salt dissolved in water is 0.1 g or less.

[0032] Examples of the hardly water-soluble salt include calcium carbonate, barium carbonate, calcium phosphate, calcium sulfate, calcium silicate, and iron hydroxide.

[0033] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the hardly water-soluble salt is preferably calcium carbonate.

[0034] In the above-mentioned filler, the first resin material may be accommodated in a container (first container). In the above-mentioned filler, the second resin material may be accommodated in a container (second container). The first container and the second container may be separate containers or may be one integrated container. One integrated container may have a partition for preventing the first resin material and the second resin material from coming into contact with each other.

[0035] Hereinafter, details of each component used in the filler according to the present invention will be described.

[0036] <Resin material> The above-mentioned filler includes a first resin material containing a resin and a compound capable of releasing cations, and a second resin material containing a resin and a compound capable of releasing anions. Hereinafter, the first resin material and the second resin material may be simply referred to as "resin material", respectively.

[0037] The above-mentioned resin material may be a curable resin material or a thermoplastic resin material. The above-mentioned resin material may contain a curable resin or a thermoplastic resin. The above-mentioned curable material can be cured. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the above-mentioned resin material is preferably a curable material. The first resin material is preferably a first curable material that can be cured. The second resin material is preferably a second curable material that can be cured. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the above-mentioned resin material preferably contains a curable resin. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the above-mentioned resin material is preferably a thermosetting material. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the first and second resin materials preferably contain a thermosetting resin, respectively. The first and second resin materials may each contain a cured product. The cured product is a cured product obtained by curing a curable resin.

[0038] Examples of the curable resin include epoxy resins, urethane resins, acrylic resins, unsaturated polyester resins, and polyurea resins. Only one type of the curable resin may be used, or two or more types may be used.

[0039] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the curable resin is preferably an epoxy resin.

[0040] Examples of the thermoplastic resin include polyolefin resins, polyolefin elastomers, polyvinyl chloride (PVC), acrylic resins (PMMA), and acrylonitrile-butadiene-styrene resins (ABS). Only one type of the thermoplastic resin may be used, or two or more types may be used.

[0041] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the thermoplastic resin is preferably a polyolefin resin or a polyolefin elastomer. Specifically, examples of the thermoplastic resin include polyethylene (PE) and polypropylene (PP).

[0042] <Compound capable of releasing a cation and compound capable of releasing an anion> The resin material contains a compound capable of releasing a cation or a compound capable of releasing an anion. A hardly water-soluble salt can be formed by the reaction between the cation released by the compound capable of releasing a cation and the anion released by the compound capable of releasing an anion. The compound capable of releasing a cation and the compound capable of releasing an anion can form a hardly water-soluble salt.

[0043] Examples of the compound capable of releasing a cation or the compound capable of releasing an anion include inorganic salts, ion-exchange resins, and ion complexes.

[0044] Examples of the compound capable of releasing the above-mentioned cation include tricalcium silicate, dicalcium silicate, calcium aluminate, calcium aluminoferrite, calcium hydroxide, calcium oxide, calcium sulfate, calcium chloride, and calcium hydrogen carbonate. Only one kind of the compound capable of releasing the above-mentioned cation may be used, or two or more kinds may be used in combination.

[0045] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the compound capable of releasing the above-mentioned cation is preferably tricalcium silicate, dicalcium silicate, calcium aluminate, calcium aluminoferrite, calcium hydroxide, calcium oxide, calcium sulfate, calcium chloride, or calcium hydrogen carbonate. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the compound capable of releasing the above-mentioned cation is preferably a compound capable of releasing calcium ions.

[0046] Examples of the compound capable of releasing the above-mentioned anion include calcium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, sodium carbonate, and sodium hydrogen carbonate. Only one kind of the compound capable of releasing the above-mentioned anion may be used, or two or more kinds may be used in combination.

[0047] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the compound capable of releasing the above-mentioned anion is preferably calcium hydrogen carbonate, sodium carbonate, or sodium hydrogen carbonate. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, the compound capable of releasing the above-mentioned anion is preferably a compound capable of releasing hydrogen carbonate ions or carbonate ions.

[0048] In the above-described first resin material, the content of the compound capable of releasing the above cation is preferably 10 parts by weight or more, more preferably 25 parts by weight or more, preferably 200 parts by weight or less, and more preferably 100 parts by weight or less, based on 100 parts by weight of the resin. When the content of the compound capable of releasing the above cation is equal to or greater than the above lower limit and equal to or less than the above upper limit, the cation is released more effectively, and the hardly water-soluble salt is formed better.

[0049] In the above-described second resin material, the content of the compound capable of releasing the above anion is preferably 10 parts by weight or more, more preferably 25 parts by weight or more, preferably 200 parts by weight or less, and more preferably 100 parts by weight or less, based on 100 parts by weight of the resin. When the content of the compound capable of releasing the above anion is equal to or greater than the above lower limit and equal to or less than the above upper limit, the anion is released more effectively, and the hardly water-soluble salt is formed better.

[0050] In the above-described filler, the ratio of the weight of the first resin material to the weight of the second resin material (weight of the first resin material / weight of the second resin material) is preferably 0.5 or more, more preferably 0.8 or more, preferably 1.5 or less, and more preferably 1.2 or less. When the ratio is equal to or greater than the above lower limit and equal to or less than the above upper limit, the hardly water-soluble salt is formed better.

[0051] <Other components> The above-described filler and resin material may optionally contain other components other than the above resin, the compound capable of releasing the above cation, and the compound capable of releasing the above anion. Examples of the other components include curing agents, thixotropic agents, and antioxidants. Only one kind of the other components may be used, or two or more kinds may be used in combination.

[0052] <Other details of the filler> A resin material can be obtained by mixing the above resin with a compound capable of releasing a cation or a compound capable of releasing an anion. An extruder or a blender may be used for the mixing.

[0053] The properties of the above resin material are not particularly limited. The above resin material may be liquid or solid. The above liquid includes paste form.

[0054] From the viewpoint of further improving the handleability of the filler and making the filling of the object to be filled easier, the above resin material is preferably solid and preferably in the form of pellets. Also, by using a solid resin material or pellets, the structure can be made more dense and the long-term stability of the structure can be further enhanced. Also, it is easy to fill the necessary amount of pellets at the necessary locations.

[0055] In the above filler, the above first resin material and the above second resin material are arranged without contacting each other. In the above filler, the distance between the above first resin material and the above second resin material is preferably more than 0 mm, more preferably 10 mm or more, still more preferably 100 mm or more, particularly preferably 150 mm or more, and preferably 2000 mm or less, more preferably 1000 mm or less. When the above distance is equal to or more than the above lower limit and equal to or less than the above upper limit, the handleability of the filler becomes even higher and the formation of unintended hardly water-soluble salts is suppressed. Therefore, the structure can be made more dense and the long-term stability of the structure can be further enhanced. The above distance is the surface distance between adjacent resin materials.

[0056] (Structure Containing Filler and Method for Manufacturing Structure Containing Filler) The structure containing the filler according to the present invention includes a substance to be filled having a plurality of pores and the above filler. In the structure containing the filler according to the present invention, the above filler is arranged in the above plurality of pores. In the structure containing the filler according to the present invention, the pores in which the above first resin material is arranged are different from the pores in which the above second resin material is arranged, and the above first resin material and the above second resin material do not contact each other.

[0057] Figure 1 is a cross-sectional view of a structure containing a filler according to the first embodiment of the present invention.

[0058] The structure 1 containing a filler includes a filling target substance 11 having a plurality of holes 11a and a filler 12. The filling target substance 11 is, for example, ground or concrete.

[0059] In the structure 1 containing a filler, the filler 12 is disposed in the plurality of holes 11a. The filler 12 includes a first resin material 21 containing a resin and a compound capable of releasing a cation, and a second resin material 22 containing a resin and a compound capable of releasing an anion. In the structure 1 containing a filler, the holes 11a in which the first resin material 21 is disposed are different from the holes 11a in which the second resin material 22 is disposed, and the first resin material 21 and the second resin material 22 are not in contact with each other.

[0060] In the structure 1 containing a filler, the first resin material 21 and the second resin material 22 are arranged side by side at equal intervals and alternately.

[0061] The method for manufacturing a structure containing a filler according to the present invention includes a step of disposing the filler in the plurality of holes in a filling target substance having a plurality of holes. In the method for manufacturing a structure containing a filler according to the present invention, the holes in which the first resin material is disposed are made different from the holes in which the second resin material is disposed, so that the first resin material and the second resin material are not brought into contact with each other.

[0062] Further, the method for manufacturing a structure containing a filler preferably includes a step of forming a filling target substance having the plurality of holes by making a plurality of holes in the filling target substance. In this case, the intervals between the plurality of holes and the intervals between the first resin material and the second resin material can be easily adjusted to an appropriate range. In addition, the filling property of the filler in the filling target substance can be enhanced. In the above step, the holes may be formed by boring.

[0063] In the structure containing the above-mentioned filling material, since the first resin material and the second resin material do not come into contact with each other, ions of each other move through water as a medium and a hardly water-soluble salt is formed at the meeting point, so that concretion can be formed in a wide range. In the structure containing the above-mentioned filling material, it is preferable that cations are released by a compound capable of releasing cations and anions are released by a compound capable of releasing anions due to water or moisture reaching the filling target substance. As a result, it is preferable that a hardly water-soluble salt is generated in the filling target substance by the reaction between the cation and the anion.

[0064] From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, in the structure containing the above-mentioned filling material, it is preferable that the first and second resin materials are each a curable resin material. From the viewpoint of further densifying the structure and further enhancing the long-term stability of the structure, it is preferable that the first and second resin materials are arranged in a plurality of pores before curing. The first and second resin materials are preferably arranged in a plurality of pores in a curable state. The first and second resin materials may be arranged in a plurality of pores after curing or in a cured state. The first and second resin materials arranged in a plurality of pores may be cured products.

[0065] The interval between the plurality of pores is preferably 100 mm or more, more preferably 150 mm or more, preferably 2000 mm or less, and more preferably 1000 mm or less. In the structure containing the above-mentioned filling material, the interval between the first resin material and the second resin material is preferably 100 mm or more, more preferably 150 mm or more, preferably 2000 mm or less, and more preferably 1000 mm or less. When the interval is equal to or greater than the lower limit and equal to or less than the upper limit, a hardly water-soluble salt is formed more moderately and widely, so that concretion can be formed in a wide range. Therefore, the structure can be further densified and the long-term stability of the structure can be further enhanced. The interval is the surface-to-surface distance between adjacent pores and the surface-to-surface distance between adjacent resin materials (S in FIG. 1). The interval is preferably the average interval.

[0066] Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. The present invention is not limited only to the following Examples.

[0067] The following materials were prepared.

[0068] Curable resin (A): "Infra Guard CRJ" (epoxy resin) manufactured by Sekisui Chemical Co., Ltd. Curable resin (B): "2120" (unsaturated polyester) manufactured by Nippon Yupica Co., Ltd. Thermoplastic resin (A): "Novatec LF441MD" (polyethylene) manufactured by Japan Polyethylene Corporation Compound capable of releasing cations: calcium chloride, calcium oxide Compound capable of releasing anions: sodium hydrogen carbonate Hardener: "Permec N" manufactured by NOF Corporation Glass particles: "Glass Beads ASGB-60" manufactured by AS ONE Corporation

[0069] (Example 1) (1) Preparation of filler 100 parts by weight of calcium chloride was mixed and dispersed in 100 parts by weight of curable resin (A), and then cured to obtain a columnar first resin material (diameter 20 mm, height about 25 mm).

[0070] 100 parts by weight of sodium hydrogen carbonate was mixed and dispersed in 100 parts by weight of curable resin (A), and then cured to obtain a columnar second resin material (diameter 20 mm, height about 25 mm).

[0071] A filler (set product / kit) including the obtained first and second resin materials and in which the first and second resin materials are not in contact with each other was obtained.

[0072] (2) Preparation of a structure including the filler An acrylic water tank with a height of 180 mm, a width of 180 mm, and a depth of 30 mm was filled with glass particles. The obtained first resin material and the obtained second resin material were placed on the diagonal line of the acrylic water tank filled with glass particles at an interval of 150 mm. In the obtained structure including the filler, the first resin material and the second resin material were not brought into contact with each other.

[0073] (3) Confirmation of formation of hardly water-soluble salt Water was added up to the upper surface of the outermost layer of the glass particles so that the glass particles filled in the acrylic water tank were immersed.

[0074] After standing for 1 month, calcium carbonate (hardly water-soluble salt) integrated with the filled glass particles was observed between the first and second resin materials.

[0075] (Example 2) (1) Preparation of filler 50 parts by weight of calcium chloride was mixed and dispersed in 100 parts by weight of curable resin (B) to obtain a liquid first resin material.

[0076] 50 parts by weight of sodium hydrogen carbonate was mixed and dispersed in 100 parts by weight of curable resin (B) to obtain a liquid second resin material.

[0077] A filler (set product / kit) was obtained which included the obtained first and second resin materials and in which the first and second resin materials were not in contact with each other.

[0078] (2) Preparation of structure including filler Two holes with a diameter of 10 mm and a depth of 100 mm were drilled from the surface at a distance of 100 mm on the diagonal line in a sandstone block with a height of 150 mm, a width of 150 mm, and a depth of 150 mm.

[0079] To each of the obtained first resin material and the obtained second resin material, 1 part by weight of a curing agent (Permec N) was added, and after stirring and mixing, they were respectively injected into two holes, placed, and cured. That is, the obtained first resin material was placed in one hole, and the obtained second resin material was placed in the other hole. In the obtained structure containing the filler, the first resin material and the second resin material were not brought into contact with each other.

[0080] (3) Confirmation of formation of hardly water-soluble salt In the structure containing the obtained filler, the above-mentioned sandstone block was semi-immersed in a metal bath filled with water, and the change in state was observed.

[0081] After standing for 2 months, the formation of calcium carbonate as a hardly water-soluble salt was observed at the center of the above-mentioned sandstone block.

[0082] (Example 3) (1) Preparation of filler 100 parts by weight of a thermoplastic resin (A) and 30 parts by weight of calcium chloride were melt-kneaded at 170 °C using a twin-screw extruder and made into pellets to obtain a first resin material (pellets, diameter 3 mm, length 5 mm).

[0083] 100 parts by weight of a thermoplastic resin (A) and 30 parts by weight of sodium hydrogen carbonate were melt-kneaded at 170 °C using a twin-screw extruder and made into pellets to obtain a second resin material (pellets, diameter 3 mm, length 5 mm).

[0084] A filler (set product / kit) was obtained, which included the obtained first and second resin materials and in which the first and second resin materials were not in contact with each other.

[0085] (2) Preparation of structure containing filler The acrylic water tank was filled with glass particles in the same manner as in Example 1, and 20 pellets of the obtained first resin material and 20 pellets of the obtained second resin material were placed on the diagonal of the acrylic water tank at an interval of 150 mm. In the obtained structure containing the filler, the first resin material and the second resin material were not brought into contact with each other.

[0086] (3) Confirmation of the formation of poorly water-soluble salts Water was added up to the upper surface of the outermost layer of the glass particles so that the glass particles filled in the acrylic water tank were immersed.

[0087] After standing for 3 months, calcium carbonate (poorly water-soluble salt) integrated with the filled glass particles was observed between the first and second resin materials.

[0088] (Comparative Example 1) (1) Preparation of a structure containing a filler 100 parts by weight of calcium chloride was mixed and dispersed in 100 parts by weight of curable resin (A), and then cured to obtain a columnar first resin material (diameter 20 mm, height about 25 mm).

[0089] The acrylic water tank with dimensions of 180 mm in height × 180 mm in width × 30 mm in depth was filled with glass particles. The obtained first resin material was placed on the diagonal line of the acrylic water tank filled with glass particles.

[0090] 100 parts by weight of sodium hydrogen carbonate was mixed and dispersed in 100 parts by weight of curable resin (A), and then cured to obtain a columnar second resin material (diameter 20 mm, height about 25 mm).

[0091] The obtained second resin material was placed on the diagonal line of the acrylic water tank where the first resin material was placed. At this time, the obtained first resin material and the obtained second resin material were brought into contact with each other.

[0092] (2) Confirmation of the formation of poorly water-soluble salts Water was added up to the upper surface of the outermost layer of the glass particles so that the glass particles filled in the acrylic water tank were immersed.

[0093] After standing for 1 month, calcium carbonate (poorly water-soluble salt) integrated with the filled glass particles was observed between the first and second resin materials. However, the size of the poorly water-soluble salt generated in Comparative Example 1 was about 1 / 4 of the size of the poorly water-soluble salt generated in Example 1.

[0094] (Comparative Example 2) (1) Preparation of a structure containing a filler 100 parts by weight of a thermoplastic resin (A) and 30 parts by weight of calcium chloride were melt-kneaded at 170 °C using a twin-screw extruder and made into pellets to obtain a first resin material (pellets, diameter 3 mm, length 5 mm).

[0095] The acrylic water tank was filled with glass particles in the same manner as in Example 1, and 20 pellets of the obtained first resin material were arranged on the diagonal line of the acrylic water tank.

[0096] 100 parts by weight of a thermoplastic resin (A) and 30 parts by weight of sodium hydrogen carbonate were melt-kneaded at 170 °C using a twin-screw extruder and made into pellets to obtain a second resin material (pellets, diameter 3 mm, length 5 mm).

[0097] The obtained second resin material was arranged on the diagonal line of the acrylic water tank where the first resin material was arranged. At this time, the obtained first resin material and the obtained second resin material were brought into contact with each other.

[0098] (3) Confirmation of the formation of a hardly water-soluble salt Water was added up to the upper surface of the outermost layer of the glass particles so that the glass particles filled in the acrylic water tank were immersed.

[0099] After standing for 3 months, calcium carbonate (hardly water-soluble salt) integrated with the filled glass particles was observed between the first and second resin materials. However, the size of the hardly water-soluble salt generated in Comparative Example 2 was 1 / 2 or less of the size of the hardly water-soluble salt generated in Example 3.

Explanation of symbols

[0100] 1... Structure containing a filler 11... Substance to be filled 11a... Hole 12... Filler 21... First resin material 22... Second resin material

Claims

1. A filler comprising a first resin material containing a resin and a compound capable of releasing a cation, and a second resin material containing a resin and a compound capable of releasing an anion, wherein a poorly water-soluble salt can be formed by the reaction between the cation released by the compound capable of releasing a cation and the anion released by the compound capable of releasing an anion, and the first resin material and the second resin material are not in contact with each other.

2. The compound capable of releasing a cation is a compound capable of releasing calcium ions, and the compound capable of releasing an anion is a compound capable of releasing hydrogen carbonate ions or carbonate ions. The filler according to claim 1.

3. The compound capable of releasing a cation is tricalcium silicate, dicalcium silicate, calcium aluminate, calcium aluminoferrite, calcium hydroxide, calcium oxide, calcium sulfate, calcium chloride, or calcium hydrogen carbonate, and the compound capable of releasing an anion is calcium hydrogen carbonate, sodium carbonate, or sodium hydrogen carbonate. The filler according to claim 1 or 2.

4. The first resin material is a first curable resin material that can be cured, and the second resin material is a second curable resin material that can be cured. The filler according to any one of claims 1 to 3.

5. The first resin material is a pellet, and the second resin material is a pellet. The filler according to any one of claims 1 to 4.

6. A filler target substance having a plurality of holes, and the filler according to any one of claims 1 to 5, wherein the filler is disposed in the plurality of holes, the holes in which the first resin material is disposed are different from the holes in which the second resin material is disposed, and the first resin material and the second resin material are not in contact with each other. A structure including the filler.

7. The structure including the filler according to claim 6, wherein the interval between the plurality of holes is 100 mm or more and 2000 mm or less.

8. The filler target substance is ground or concrete. The structure including the filler according to claim 6 or 7.

9. A step of disposing the filler according to any one of claims 1 to 5 in the plurality of holes in the filler target substance having a plurality of holes. A method for manufacturing a structure including a filler, wherein the first resin material and the second resin material are not brought into contact with each other by making the holes in which the first resin material is disposed different from the holes in which the second resin material is disposed.

10. The method for manufacturing a structure including a filler according to claim 9, wherein the interval between the plurality of holes is 100 mm or more and 2000 mm or less.

11. The method for manufacturing a structure including a filler according to claim 9 or 10, further comprising a step of forming a filling target substance having the plurality of holes by making a plurality of holes in the filling target substance.

12. The method for manufacturing a structure including a filler according to any one of claims 9 to 11, wherein the filling target substance is ground or concrete.

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