Anchor fixing material, anchor fixing composition, and cured product

Abstract

To provide an anchor fixing material having, in an anchor fixing operation, high fluidity retention when formed into an anchor fixing composition, capable of suppressing insertion resistance at the time of anchor installation and capable of imparting sure strength developability.SOLUTION: An anchor fixing material contains cement, calcium aluminate, gypsum, and aggregate, wherein the calcium aluminate contains SO3, ZrO2 and P2O5 as chemical components, and a total amount of SO3, ZrO2 and P2O5 is 0.05 mass% or more and 2.0 mass% or less relative to 100 pts.mass of the calcium aluminate, and the content of P2O5(P2O5 / (SO3+ZrO2+P2O5)) is 10 mass% or more and 45 mass% or less.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an anchor fixing material, an anchor fixing composition, and a cured body.

Background Art

[0002] In recent years, in addition to the addition of reinforcing bars for shear reinforcement of concrete structures, the installation of bridge collapse prevention devices, and the construction of post-construction anchors, in the reinforcement and rockfall prevention construction of the slope surface, further integration and durability between the base concrete and the inserted reinforcing bars have been emphasized. As a method for fixing the reinforcing bars, a method is adopted in which the concrete is drilled, a filler containing an inorganic hydraulic substance or an organic resin is inserted into the drilled hole, and an anchor is placed and fixed.

[0003] As the inorganic hydraulic substance, cement is common. For example, a method of immersing a capsule-type fixing material containing cement and a quick-setting agent in a container made of a water-absorbing material such as paper into water, inserting it into the drilled hole, and inserting a bolt; a method of inserting the capsule into the drilled hole and then injecting water and inserting the bolt; a method of enclosing a quick-hardening cement in an anchor fixing capsule having an inner container made of a waterproof material and an outer container made of a water-absorbing material has been proposed (Patent Document 1, Patent Document 2).

[0004] Even if the anchor fixing capsule is designed to have a long water absorption time, it is required that the quick-hardening cement material does not flow out of the capsule before the bolt fixing is completed. When using a capsule that can absorb sufficient water in advance on the outer shell of the capsule, it is necessary to form the inner shell part with a waterproof material, so that water easily penetrates into the quick-hardening cement composition itself, hardening is made uniform, and a desired fixing force is obtained.

[0005] On the other hand, in order to improve workability, a quick-hardening cement composition for an anchor fixing material has been proposed that can set the water absorption time to 10 minutes or less, has no outflow of the fixing material, and can obtain a predetermined fixing force (see Patent Document 3).

[0006] However, since the fluidity of the cement composition decreases and the working time is determined, there has been a problem in ensuring reliable fixing force while maintaining good workability with reduced insertion resistance during anchor placement while retaining the fluidity.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

[0008] An object of the present invention is to provide an anchor fixing material that has high fluidity retention, suppresses insertion resistance during anchor placement, and can impart reliable strength development when used as an anchor fixing composition, for example, in an anchor fixing operation.

[0009] The present invention has been made to solve the above problems. As a result of various efforts made by the present inventors to solve the above problems, it has been found that the problems can be solved by an anchor fixing material containing cement, a specific calcium aluminate, gypsum, and aggregate, and the present invention has been completed. The gist of the present invention is as follows.

[0010] [1] An anchor fixing material containing cement, calcium aluminate, gypsum, and aggregate, wherein the calcium aluminate contains SO3, ZrO2, and P2O5 as chemical components, and the total amount of SO3, ZrO2, and P2O5 is 0.05% by mass or more and 2.0% by mass or less with respect to 100 parts by mass of the calcium aluminate, and the content of P2O5 (P2O5 / (SO3 + ZrO2 + P2O5)) is 10% by mass or more and 45% by mass or less. [2] The CaO / Al2O3 molar ratio of the calcium aluminate is 0.5 or more and 2.0 or less, The content ratio of the calcium aluminate is 30 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the cement, the anchor fixing material according to [1]. [3] The density of the aggregate is 2.6 g / cm 3 or more, and the content ratio of the aggregate is 40 parts by mass or more and 250 parts by mass or less with respect to 100 parts by mass of the cement, the anchor fixing material according to [1] or [2]. [4] An anchor fixing composition containing the anchor fixing material according to any one of [1] to [3] and water. [5] A cured body obtained by using the anchor fixing composition according to [4]. [Advantages of the Invention]

[0011] According to the present invention, for example, in an anchor fixing operation, an anchor fixing material can be provided which has high fluidity retention when used as an anchor fixing composition, suppresses the insertion resistance during anchor driving, and can impart reliable strength development. [Embodiments for Carrying Out the Invention]

[0012] Hereinafter, the present invention will be described in detail. In this specification, parts and % are based on mass unless otherwise specified.

[0013] [Anchor Fixing Material] The anchor fixing material according to the present invention contains cement, calcium aluminate, gypsum, and aggregate.

[0014] (Cement) The cement used in the present invention is not particularly limited, and various cements such as ordinary, early-strength, ultra-early-strength, low-heat, and moderate-heat cements, various blended cements obtained by mixing blast furnace slag, fly ash, silica fume, etc. with these cements, environmentally friendly cements (eco-cements) manufactured using municipal waste incineration ash and sewage sludge incineration ash as raw materials, commercially available fine particle cements, white cements, etc. may be mentioned, and it is also possible to use various cements and various blended cements in a finely powdered form. In addition, those adjusted by increasing or decreasing the amount of components (for example, gypsum, etc.) usually used in cement can also be used. Furthermore, those obtained by combining two or more of these can also be used. In the present invention, from the viewpoint of high strength development property and enhanced adhesion strength, it is preferable to select ordinary Portland cement or early-strength Portland cement.

[0015] From the viewpoints of manufacturing cost and strength development property, the Blaine specific surface area value (hereinafter also referred to as the Blaine value) of the cement used in the present invention is preferably 2,500 cm 2 / g or more and 7,000 cm 2 / g or less, more preferably 2,750 cm 2 / g or more and 6,000 cm 2 / g or less, and even more preferably 3,000 cm 2 / g or more and 4,500 cm 2 / g or less. The Blaine specific surface area value is determined in accordance with JIS R 5201 (Physical test methods for cement).

[0016] (Calcium aluminate) The calcium aluminate used in the present invention is a general term for substances having hydration activity mainly composed of CaO and Al2O3 obtained by mixing calcia raw materials and alumina raw materials, etc., and firing in a kiln, or melting and cooling in an electric furnace, and either crystalline or amorphous can be used. It is a material with a short hardening time and high initial strength development property.

[0017] It contains SO3, ZrO2, and P2O5 as chemical components in calcium aluminate. The SO3 in calcium aluminate is preferably 0.01% by mass or more and 0.9% by mass or less, more preferably 0.03% by mass or more and 0.25% by mass or less. ZrO2 is preferably 0.01% by mass or more and 0.7% by mass or less, more preferably 0.03% by mass or more and 0.25% by mass or less. P2O5 is preferably 0.01% by mass or more and 0.6% by mass or less, more preferably 0.03% by mass or more and 0.5% by mass or less.

[0018] Note that "calcium aluminate contains SO3, ZrO2, and P2O5 as chemical components" means that peaks sufficient to identify each of SO3, ZrO2, and P2O5 are not observed in X-ray diffraction measurement, but the content of each can be measured by fluorescent X-ray measurement. Structurally, it is presumed that SO3, ZrO2, and P2O5 are each solid-solved in calcium aluminate.

[0019] From the viewpoint of high fluidity retention effect, suppressing the insertion resistance during anchor placement, and enhancing strength development, the total amount of SO3, ZrO2, and P2O5 in the calcium aluminate according to the present invention is preferably 0.05% by mass or more and 2.0% by mass or less. Further, it is more preferably 0.07% by mass or more and 1.7% by mass or less, and still more preferably 0.1% by mass or more and 1.5% by mass or less. Furthermore, from the viewpoint of high fluidity retention effect, suppressing the insertion resistance during anchor placement, and enhancing strength development, the content of P2O5 (P2O5 / (SO3 + ZrO2 + P2O5)) is preferably 10% by mass or more and 45% by mass or less. Further, it is more preferably 12% by mass or more and 43% by mass or less, and still more preferably 15% by mass or more and 40% by mass or less. Also, the amounts of SO3, ZrO2, and P2O5 can be measured by the fluorescent X-ray diffraction method (XRF).

[0020] In order to make the total amount of SO3, ZrO2, and P2O5 0.05% by mass or more and 2.0% by mass or less, or the content of P2O5 (P2O5 / (SO3 + ZrO2 + P2O5)) 10% by mass or more and 45% by mass or less, based on 100 parts by mass of calcium aluminate, for example, the respective contents in the raw materials are measured in advance, and the mixing amounts of the raw materials containing SO3, ZrO2, and P2O5 are adjusted so as to obtain the desired total amount.

[0021] Among calcium aluminates, the molar ratio of CaO to Al2O3 (CaO / Al2O3 molar ratio) is preferably 0.5 or more and 2.0 or less, more preferably 0.7 or more and 1.8 or less. By having the molar ratio within the above range, the setting time can be further shortened and the initial strength development property can be enhanced. In order to make the molar ratio of CaO to Al2O3 within the above range, for example, the raw material formulation when producing calcium aluminate may be adjusted.

[0022] The amount of calcium aluminate used in the present invention is preferably 30 parts by mass or more and 100 parts by mass or less, more preferably 50 parts by mass or more and 90 parts by mass or less, based on 100 parts by mass of the cement, from the viewpoints of high fluidity retention effect, suppressing the insertion resistance during anchor placement, and enhancing the strength development property.

[0023] When industrially obtaining calcium aluminate, it may contain impurities. Specific examples thereof include, for example, SiO2, Fe2O3, MgO, TiO2, MnO, Na2O, K2O, SrO, Cr2O3, Nb2O5, Ga2O3, Y2O3, ThO2, NiO, SeO2, Li2O, Rb2O, As2O3, ZnO, S, Cl, and F. The presence of these impurities does not pose a particular problem as long as it does not substantially inhibit the object of the present invention. Specifically, there is no particular problem as long as the total of these impurities is 10% or less.

[0024] In addition, examples of the impurity compounds include calcium aluminoferrites such as 4CaO·Al2O3·Fe2O3, 6CaO·2Al2O3·Fe2O3, and 6CaO·Al2O3·2Fe2O3; calcium ferrites such as 2CaO·Fe2O3 and CaO·Fe2O3; calcium aluminosilicates such as gehlenite 2CaO·Al2O3·SiO2 and anorthite CaO·Al2O3·2SiO2; calcium magnesium silicates such as melilite 3CaO·MgO·2SiO2, akermanite 2CaO·MgO·2SiO2, and monticellite CaO·MgO·SiO2; calcium silicates such as tricalcium silicate 3CaO·SiO2, dicalcium silicate 2CaO·SiO2, rankinite 3CaO·2SiO2, and wollastonite CaO·SiO2; calcium titanate CaO·TiO2; calcium aluminate 3CaO·Al2O3; free lime; and may include leucite (K2O, Na2O)·Al2O3·SiO2. In the present invention, these crystalline or amorphous substances may be mixed.

[0025] The particle size of the calcium aluminate of the present invention is not particularly limited, but is usually in the range of 3000 to 9000 cm 2 / g in terms of the Blaine specific surface area, and those of about 4000 to 8000 cm 2 / g are more preferable. By being 3000 cm 2 / g or more, the strength development property is likely to be sufficient, and by being 9000 cm 2 / g or less, good handleability can be maintained.

[0026] (Gypsum) The gypsum used in the present invention is a general term for anhydrous, hemihydrate, or dihydrate gypsum and is not particularly limited. However, from the viewpoint of strength development property, the use of anhydrous gypsum or hemihydrate gypsum is preferable, and the use of anhydrous gypsum is more preferable.

[0027] The particle size of the gypsum is not particularly limited, but is usually preferably 3,000 to 9,000 cm 2 / g in terms of the Blaine specific surface area, and 4,000 to 8,000 cm 2 / g is more preferable. 3,000 cm 2 / g or more makes it easier to obtain good dimensional stability, and 9,000 cm 2 / g or less makes it easier to ensure the effect of maintaining fluidity.

[0028] The amount of gypsum used in the present invention is preferably 20 parts by mass or more and 120 parts by mass or less with respect to 100 parts by mass of calcium aluminate, from the viewpoints of high fluidity retention effect, suppressing the insertion resistance during anchor placement, and obtaining reliable strength development. More preferably, it is 30 parts by mass or more and 110 parts by mass or less.

[0029] (Aggregate) As the aggregate used in the present invention, fine aggregate and coarse aggregate similar to those used in ordinary cement mortar and concrete can be used. That is, river sand, river gravel, mountain sand, mountain gravel, crushed stone, crushed sand, limestone aggregate, lime sand, silica sand, colored sand, artificial aggregate, blast furnace slag aggregate, sea sand, sea gravel, artificial lightweight aggregate, and heavy aggregate, etc. can be used, and these can also be combined. In particular, it is preferable to use heavy aggregate with a high fluidity retention effect and reliable strength development. The density of the aggregate (for example, heavy aggregate) is 2.6 g / cm 3 or more is preferable, and 2.7 g / cm 3 or more is more preferable.

[0030] The content ratio of the aggregate is preferably 40 parts by mass or more and 250 parts by mass or less with respect to 100 parts by mass of cement, more preferably 50 parts by mass or more and 230 parts by mass or less, and even more preferably 60 parts by mass or more and 200 parts by mass or less. When the content ratio of the aggregate is within the above range, the fluidity retention effect is high, the insertion resistance during anchor placement is suppressed, and reliable strength development can be obtained.

[0031] (Other components) In the present invention, by using an alkali metal carbonate, the effect of maintaining fluidity is high, and the strength development property can be further improved. Examples of the alkali metal carbonate include sodium carbonate, potassium carbonate, lithium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, and lithium hydrogen carbonate, and combinations thereof are also possible. In particular, from the viewpoint of strength development property, the use of lithium carbonate is preferred.

[0032] The content ratio of the alkali metal carbonate is preferably 1 part by mass or more and 6 parts by mass or less in terms of solid content with respect to 100 parts by mass of cement, and more preferably 2 parts by mass or more and 5 parts by mass or less. By the content ratio of the alkali metal carbonate being within the above range, the effect of maintaining fluidity and the strength development property can be improved.

[0033] The anchor fixing material of the present invention can contain silica fine powder from the viewpoint of having a high effect of maintaining fluidity, suppressing the insertion resistance during anchor driving, and obtaining reliable strength development property.

[0034] Examples of the silica fine powder include latent hydraulic substances such as blast furnace granulated slag fine powder, pozzolanic substances such as fly ash and silica fume, and among them, silica fume is preferred. The type of silica fume is not limited, but from the viewpoint of fluidity, the use of silica fume containing 10% or less of ZrO2 as an impurity or acidic silica fume is more preferred. Acidic silica fume refers to a substance that shows acidity with a pH of 5.0 or less in the supernatant when 1 g of silica fume is put into 100 cc of pure water and stirred.

[0035] The fineness of the silica fine powder is not particularly limited, but usually, blast furnace granulated slag fine powder and fly ash have a Blaine value in the range of 3,000 cm 2 / g or more and 9,000 cm 2 / g or less, and silica fume has a BET specific surface area in the range of 20,000 cm 2 / g or more and 300,000 cm 2 / g or less.

[0036] The content ratio of the silica fine powder is preferably 1 to 20 parts by mass, more preferably 2 to 15 parts by mass, and even more preferably 3 to 10 parts by mass with respect to 100 parts by mass of the cement. When the content ratio of the silica fine powder is at least the above lower limit value, the effect of maintaining fluidity is high, the insertion resistance during anchor placement can be suppressed, and reliable strength development can be obtained. Further, when the content ratio of the silica fine powder is at most the above upper limit value, the fluidity can be improved.

[0037] In the present invention, it is also possible to use an antifoaming agent as long as it does not adversely affect the performance. The antifoaming agent is used for the purpose of suppressing the amount of air entrained by kneading. The type of the antifoaming agent is not particularly limited as long as it does not significantly adversely affect the strength characteristics of the hardened mortar, and either a liquid form or a powder form can be used. For example, polyether-based antifoaming agents, polyhydric alcohol-based antifoaming agents such as esterified products of polyhydric alcohols and alkyl ethers, alkyl phosphate-based antifoaming agents, silicone-based antifoaming agents, and the like can be mentioned.

[0038] The content ratio of the antifoaming agent is preferably 0.002 to 0.5 parts by mass, more preferably 0.005 to 0.45 parts by mass, and even more preferably 0.01 to 0.4 parts by mass with respect to 100 parts by mass of the cement. When the content ratio of the antifoaming agent is at least the above lower limit value, the defoaming effect can be sufficiently exhibited. Further, when the content ratio of the antifoaming agent is at most the above upper limit value, the effect of maintaining fluidity is high, and the insertion resistance during anchor placement can be suppressed.

[0039] In the present invention, within a range that does not adversely affect the performance, one or more of a setting retarder, a gas foaming substance, a water reducing agent, a setting regulator, an AE agent, a rust inhibitor, a water repellent, an antibacterial agent, a coloring agent, an antifreeze agent, fine limestone powder, fine slowly cooled blast furnace slag powder, incineration ash of sewage sludge and its molten slag, incineration ash of municipal waste and its molten slag, and incineration ash of pulp sludge, etc., a thickening agent, a shrinkage reducing agent, a polymer, clay minerals such as bentonite and sepiolite, and an anion exchanger such as hydrotalcite can be used within a range that does not substantially inhibit the object of the present invention.

[0040] In the anchor fixing material of the present invention, the mixing method of each material is not particularly limited, and each material may be mixed during construction, or a part or all of them may be mixed in advance. As the mixing device, any existing device, for example, a tilting drum mixer, an omnimixer, a Henschel mixer, a V-type mixer, a proshear mixer, and a Nauta mixer can be used.

[0041] [Anchor Fixing Composition and Hardened Body] The anchor fixing composition of the present invention contains the above-described anchor fixing material of the present invention and water, and specifically, it is obtained by kneading the anchor fixing material and water. The amount of kneading water in the present invention is not particularly limited because it varies depending on the purpose and use and the content ratio of each material, but it is preferably 10 parts by mass or more and 70 parts by mass or less, more preferably 14 parts by mass or more and 65 parts by mass or less, and even more preferably 16 parts by mass or more and 60 parts by mass or less with respect to 100 parts by mass of the anchor fixing material. When the amount of kneading water is equal to or more than the above lower limit value, the effect of maintaining fluidity is high, the insertion resistance during anchor placement can be suppressed, and reliable strength development can be obtained.

[0042] The construction method using the anchor fixing material of the present invention includes a method of adding predetermined water, kneading, and pouring it into a drilled hole, a method of filling the hole with the mortar kneaded using a pump, a method of putting the kneaded mortar into a container or bag such as a cartridge and filling the hole, a method of producing a capsule in which the anchor fixing material is put into Japanese paper or a glass tube and putting it into the hole for filling, and the like. The kneading method includes a method of putting the material into a container such as a pale can and kneading it with a hand mixer, a method of kneading it using a mixer or the like, a method of mixing by hand, and the like, and is not particularly limited. The anchor fixing composition of the present invention becomes, for example, a cured body of the present invention using the anchor fixing composition by being kneaded, filled, and cured.

Examples

[0043] Hereinafter, the present invention will be further described based on experimental examples of the present invention, but the present invention is not limited thereto.

[0044] [Experimental Example] Based on 100 parts by mass of cement, 2 parts by mass of an alkali metal carbonate, 0.9 parts by mass of gluconic acid, and 10 parts by mass of a siliceous fine powder were contained, and calcium aluminate and aggregate shown in Table 1 were contained in the mass parts shown in Table 1 with respect to 100 parts by mass of cement. Further, 60 parts by mass of gypsum was contained with respect to 100 parts by mass of calcium aluminate to obtain an anchor fixing material. With respect to 100 parts by mass of the obtained anchor fixing material, 25 parts by mass of water was kneaded to prepare an anchor fixing material composition. The fluidity retention effect, the insertion resistance of the anchor, and the adhesion strength of the anchor of the prepared anchor fixing material composition were measured. The results are also shown in Table 1.

[0045] <Materials Used> · Cement: A trial-produced cement assuming Portland cement (various commercially available pure chemicals were used for adjusting the blending raw materials and chemical components of the cement factory), Blaine specific surface area 3,450 cm 2 / g · Calcium aluminate: Prepared by blending CaO raw material (calcium carbonate), Al2O3 raw material (aluminum oxide), SO3 raw material (gypsum), ZrO2 raw material (zirconium oxide), and P2O5 raw material (calcium phosphate), firing at 1,500 °C to synthesize clinker, and pulverizing with a ball mill to a Blaine specific surface area of 3,000 cm 2 / g. Furthermore, the SO3, ZrO2, and P2O5 contents were measured by X-ray fluorescence diffraction, and the calcium aluminate shown in Table 1 was prepared. · Alkali metal carbonate: Lithium carbonate, reagent · Siliceous fine powder: Fumed silica, BET specific surface area of 10 m 2 / g, commercially available product · Water: Tap water · Aggregate A: Heavy aggregate, ferronickel slag, maximum size 1.2 mm, density 3.11 g / cm 3 · Aggregate B: Fine aggregate, a mixture of 50% lime sand under 0.6 mm and 50% lime sand between 0.6 - 1.2 mm was used. Density 2.52 g / cm 3 · Aggregate C: A mixture of Aggregate A and Aggregate B, adjusted to a density of 2.6 g / cm 3 · Aggregate D: A mixture of Aggregate A and Aggregate B, adjusted to a density of 2.7 g / cm 3

[0046] <Measurement items> · Fluidity retention: Measured according to JIS R 5201, the flow value 20 minutes after mixing was subtracted from the flow value immediately after remixing to confirm the fluidity retention effect. Fluidity retention effect = [Flow value immediately after remixing] - [Flow value 20 minutes after remixing] · Anchor insertion resistance: Concrete with a compressive strength of 21 N / mm 2 after 28 days of age was placed in a steel pipe with an outer diameter of 20 cm, a height of 23 cm, and a thickness of 4.5 mm. After 28 days of age, a core with an outer diameter of 32 mm was drilled, and the inside of the core was filled with the mixed anchor fixing composition up to a height of 16 cm. Then, 20 minutes later, a deformed steel bar D25 was inserted by hand, and the length that the steel bar could be inserted was measured to determine the anchor insertion resistance. ​​Insertion resistance of anchor (%) = Length into which the reinforcing bar could be inserted / 23 cm × 100 · Adhesion strength of anchor: After the insertion resistance test of the anchor, it was pulled out with a jack 28 days after the material age, and the adhesion strength per unit surface area of the reinforcing bar was measured.

[0047]

Table 1

[0048] From the results in Table 1, it was confirmed that by containing a specific calcium aluminate and combining it with a specific material, the effect of maintaining fluidity is high, the insertion resistance during anchor placement is suppressed, and a reliable strength development property can be obtained.

Industrial Applicability

[0049] The anchor fixing material of the present invention contains a specific calcium aluminate and, by combining it with a specific material, it is possible to provide an anchor fixing composition and a cured body that have a high effect of maintaining fluidity, suppress the insertion resistance during anchor placement, and can obtain reliable strength development. Therefore, it can be widely applied to the civil engineering and construction fields, such as fixing to reinforcing bars for concrete structures used in water and sewage, agricultural water, railways, electric power, roads, buildings, etc.

Claims

1. An anchor fixing material containing cement, calcium aluminate, gypsum, and aggregate, wherein the calcium aluminate contains SO ３ and ZrO ２ and P ２ O ５ and the total amount of SO and ZrO ３ and P ２ O ２ O ５ in 100 parts by mass of the calcium aluminate is 0.05% by mass or more and 2.0% by mass or less, and the content of P ２ O ５ (P ２ O ５ / (SO ３ + ZrO ２ + P ２ O ５ )) is 10% by mass or more and 45% by mass or less. An anchor fixing material.

2. The CaO / Al ２ O ３ molar ratio of the calcium aluminate is 0.5 or more and 2.0 or less, and the content ratio of the calcium aluminate is 30 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the cement. The anchor fixing material according to Claim 1.

3. The density of the aggregate is 2.6 g / cm ３ or more, and the content ratio of the aggregate is 40 parts by mass or more and 250 parts by mass or less with respect to 100 parts by mass of the cement. The anchor fixing material according to Claim 1 or 2.

4. An anchor fixing composition containing the anchor fixing material according to any one of Claims 1 to 3 and water.

5. A cured body obtained by using the anchor fixing composition according to Claim 4.

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