JP2001026616A - Anchoring agent for fixing anchor bolt and capsule for fixing anchor bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an anchoring agent that has excellent anchoring force capable of withstanding loads due to repeated loading and does not cause performance deterioration induced by an alkali contained in concrete by constituting its main components of a diester oligomer, an unsaturated polyester resin or the like and a reactive monomer. SOLUTION: An anchoring agent is produced by using 50-100 pts.wt. diester oligomer represented by the formula, 0-30 pts.wt. resin selected from an unsaturated polyester resin, an epoxy acrylate resin, a polyester acrylate resin and a urethane acrylate resin and 0-50 pts.wt. reactive monomer. In the formula, R1 denotes H or 1-3C alkyl; and m+n=2.4 to 6.0. The diester oligomer is a diester of a dihydric alcohol component and an unsaturated carboxylic acid which constitute an ethylene oxide adduct of bisphenol A, and is used the diester oligomer of the formula wherein m and n are each different, which is produced by esterification of a mixture of an ethylene oxide adduct of bisphenol A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing agent for fixing an anchor bolt and a capsule for fixing an anchor bolt used in a post-installed anchor. The present invention relates to a fixing agent for anchor bolts and a capsule for anchor bolts, which do not cause performance deterioration due to alkali in concrete. Note that the anchor bolt means a full thread bolt, deformed steel bar, or the like used for a post-installed anchor.

[0002]

2. Description of the Related Art Conventionally, as a method of fixing an anchor bolt to concrete, bedrock (hereinafter also referred to as "base material"), an anchor fixing capsule containing a fixing agent is mounted in an anchor hole formed in a base material. A post-installation anchor method is known in which an anchor bolt is hit by rotating it with a hammer drill or the like. Various resin components, hardener components, and aggregates are known as the anchoring bolt fixing agent, and various methods have been devised for the arrangement of the anchoring capsules in the container and the method of separation. The fixing agent for anchor bolts has strong fixing power, chemical resistance not attacked by concrete alkali, stable preservation, not adversely affecting human body and environment, etc.
A wide variety of performance balances are required. Conventionally,
As the fixing agent component, an unsaturated polyester resin or an epoxy acrylate resin is used, but most of the unsaturated polyester resins have difficulty in durability of concrete against alkali. If a bisphenol A type unsaturated polyester resin having good alkali resistance is used for the purpose of improving the durability, there is a disadvantage that the fixing force is insufficient unless special modification is performed. In addition, the epoxy acrylate resin often has a short shelf life and often limits its use. One of the solutions to these problems is
The use of a composition based on 2,2-bis [4- (methacryloxyethoxy) phenyl] propane as a binder component has been proposed in Japanese Patent No. 2728976. In recent years, in addition to the above-mentioned problems, the post-installation anchor method has been required to withstand loads due to repeated loads due to the current situation where it is used for a wide range of civil engineering applications. However, the above document does not disclose an anchor bolt fixing adhesive and an anchor bolt fixing capsule satisfying the durability against the load due to the repeated load.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has an excellent fixing force that can withstand loads due to repeated loads, and its performance is reduced by alkali in concrete. It is an object of the present invention to provide an anchor bolt fixing adhesive and an anchor bolt fixing capsule.

[0004]

The present invention provides (a) diester oligomers 50 to 10 represented by the following general formula (I):
0 parts by weight, (b) 0 to 30 parts by weight of at least one resin selected from the group consisting of unsaturated polyester resin, epoxy acrylate resin, polyester acrylate resin and urethane acrylate resin, and (c) reactive monomer 0 to 50 parts by weight [however, (a) + (b) + (c)
= 100 parts by weight] as a main component (A) and a fixing agent for anchor bolt fixing, containing a curable liquid mixture.

[0005]

Embedded image

(However, the two R ^{1 's} are the same or different and each represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and m + n = 2.4 to 6.0.) A container, the (A) curable liquid mixture contained in the container, (B) a filler and / or an aggregate composed of an inorganic solid (hereinafter referred to as “(B) a filler and / or
And (C) a capsule for fixing an anchor bolt having a curing agent separated from the curable liquid mixture and contained in the container.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The curable liquid mixture (A) of the present invention contains (a) a diester oligomer represented by the general formula (I) as a main component. The diester oligomer (a) is a diester of a dihydric alcohol component, which is an ethylene oxide adduct to bisphenol A, and an unsaturated carboxylic acid component. The component (a) has a self-crosslinking property, and can carry out a polymerization reaction in the presence of a suitable curing agent even without the reactive monomer component (c). In the above general formula (I), m and n represent —CH ₂ CH ₂ derived from ethylene oxide contained in one molecule of the diester oligomer.
O-unit number. In the diester oligomer of the present invention, (m, n) is (1, 1), (1, 2),
(1,3), (2,2), (2,3), (3,3),
It is a mixture containing diesters such as (3,4) and (4,4). The above m + n is 2.4 to 6.0, and
It is preferably 2.5 to 4.5 from the viewpoint of performance and ease of synthesis. When m + n is less than 2.4, the durability (vibration resistance) to a load due to a repeated load is poor. In addition, when m + n approaches 2 and the amount of by-products and impurities is small, the melting point increases. May be difficult to handle. On the other hand, if it exceeds 6.0, the fixing power is inferior. When the content is within the above range, the strength, particularly the characteristics against the load due to the repetitive load, is excellent, and it is economically preferable for convenience in synthesis. However, it is easy to manufacture a product in which m + n exceeds 6.0.

The diester oligomer (a) is a mixture, but it does not mean that those having different (m, n) are individually synthesized and then mixed. That is, when synthesizing an ethylene oxide adduct of bisphenol A, which is a precursor, the adduct is formed as a mixture depending on the reaction conditions and the charging ratio of each raw material, and the diester oligomer is obtained by esterifying the adduct. Can be The unsaturated carboxylic acid component forming the diester oligomer (a) is preferably acrylic acid or methacrylic acid, and more preferably methacrylic acid. The unsaturated carboxylic acid component can be used alone or in combination of two or more. Esterification between the unsaturated carboxylic acid component and the ethylene oxide adduct can be performed by a conventional method.

The amount of the diester oligomer (a) of the present invention is 50 to 100 parts by weight, preferably 60 to 95 parts by weight, more preferably 70 to 90 parts by weight, per 100 parts by weight of the component (A). . (A) When the amount of the diester oligomer is less than 50 parts by weight, the use of the diester oligomer results in insufficient rigidity due to the development of a crosslinked structure.

In the curable liquid mixture (A) of the present invention, at least one selected from the group consisting of (b) unsaturated polyester resin, epoxy acrylate resin, polyester acrylate resin and urethane acrylate resin is used as a second component. Can be added for the purpose of viscosity adjustment, cost reduction, and the like. Examples of the unsaturated polyester resin include dibasic acids such as maleic acid, fumaric acid, phthalic acid, and isophthalic acid, and dihydric alcohols such as ethylene glycol, propylene glycol, bisphenol A ethylene oxide adduct, and bisphenol A propylene oxide adduct. And unsaturated polyester resins obtained from As the unsaturated polyester resin, in particular, from the viewpoint of alkali resistance to concrete, 2
As the hydric alcohol, an unsaturated polyester resin using a bisphenol A adduct is preferable. Examples of the epoxy acrylate resin include polyfunctional epoxy resins such as bisphenol A type, bisphenol F type, polyphenol type, halogenated bisphenol type, polyvalent glycidyl ester type, acrylic acid, methacrylic acid, acrylic acid-maleic anhydride, methacrylic acid. Modified with acid-maleic anhydride or the like. Among the epoxy acrylate resins, those obtained by modifying bisphenol A type with methacrylic acid are particularly preferred.

As the polyester acrylate resin,
Α, β-unsaturated dicarboxylic acids such as maleic anhydride and fumaric acid, bisphenol A ethylene oxide adduct, bisphenol A propylene oxide adduct, hydrogenated bisphenol A, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, neo Examples include those obtained by modifying a polyester resin obtained by polycondensation with a polyhydric alcohol such as pentyl glycol and 2,2'-di (hydroxypropoxyphenyl) propane with acrylic acid, methacrylic acid or the like. The α, β-unsaturated dicarboxylic acid may contain a dicarboxylic acid such as phthalic anhydride, isophthalic acid, or terephthalic acid, if necessary. Among the above polyester acrylate resins, bisphenol A
Bisphenol A-type polyester acrylate resin obtained by polycondensing adducts and other polyhydric alcohols with unsaturated dicarboxylic acids and dicarboxylic acids, which is obtained by modifying bisphenol A-type polyester resins with acrylic acid, methacrylic acid, etc., has corrosion resistance. Excellent in properties and preferred.

The urethane acrylate resin is a resin containing an acrylic or methacrylic group and a urethane group. For example, a urethane acrylate resin is obtained by reacting a diisocyanate prepolymer with 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate or hydroxypropyl methacrylate. By doing so, it can be easily obtained. Specific examples of the urethane acrylate resin include an addition reaction product of 4,4'-diphenylmethane diisocyanate and 2-hydroxyethyl methacrylate, and an addition reaction product of trimethylhexamethylene diisocyanate and 2-hydroxyethyl methacrylate. The compounding amount of the resin (b) of the present invention is 0 to 30 parts by weight, preferably 0 to 20 parts by weight, per 100 parts by weight of the component (A). (B) The resin is
The effect of the present invention can be exhibited even if it is not contained in the component (A) of the present invention.
It is not preferable because the original effect of the diester oligomer may not be obtained.

As the third component, (c) a reactive monomer can be added to the curable liquid mixture (A) of the present invention. (C) The reactive monomer has a double bond and can be bonded to the (a) diester oligomer and the (b) resin component as the second component by a double bond reaction. , (C) can be combined as a copolymer via one component of a mixture of reactive monomers. (C) Reactive monomers include styrene, p-methylstyrene, divinylbenzene, vinyltoluene, methyl methacrylate,
Ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, isobornyl methacrylate, glycidyl methacrylate, allyl methacrylate, methacrylic acid Hydroxyethyl, hydroxypropyl methacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, diallyl phthalate and the like are included. Preferably styrene, hydroxypropyl methacrylate, ethylene glycol dimethacrylate,
Methyl methacrylate. The reactive monomer (c) can be used alone or in combination of two or more.
The compounding amount of the reactive monomer (c) of the present invention depends on the amount of the component (A)
0 to 50 parts by weight, preferably 0 to 30 parts by weight, per 100 parts by weight.
Parts by weight. (C) When the amount of the reactive monomer exceeds 50 parts by weight, the crosslink density is reduced, the rigidity is reduced, the curing shrinkage is increased, and the anchoring force of the anchor bolt is reduced.

The (A) curable liquid mixture of the present invention comprises:
The main components are (a) a diester oligomer, (b) a resin component, and (c) a reactive monomer component. The viscosity of the component (A) is, for example, in the most common process in which the component (A) is first charged into a glass container and then the aggregate of the component (B) is settled. Has a viscosity at the filling temperature of the component (A) of preferably from 300 to 4.0,
00 mPa · s, more preferably 500 to 2,500
mPa · s. When the viscosity is less than 300 mPa · s, sedimentation of the aggregate component occurs at the time of construction, and the composition tends to be non-uniform due to the anchor portion. On the other hand, 4,0
If it exceeds 00 mPa · s, the sedimentation of the component (B) to be charged later is slow, which is not preferable in the production process. The adjustment of the viscosity can be easily selected according to the performance of the product.

When the fixing agent for fixing an anchor bolt of the present invention is used, the purpose is to improve the compressive strength, to add the ability not to hang down in the horizontal or upward construction, and to improve the mixing property.
(B) It is preferable to add a filler and / or aggregate made of an inorganic solid to a capsule container. Examples of the filler include amorphous fine powder silica, calcium carbonate, silica sand, glass fine particles, and clay. In addition, as the aggregate, glass beads, magnesia clinker, quartzite,
Limestone powder and the like. The above fillers and / or aggregates can be used alone or as a mixture of two or more.

The particle size distribution of the component (B) and the amount used are as follows:
It can be appropriately selected depending on the form of the container defined by the purpose of the product, the filling step of the liquid, and the like. Generally, in a process in which the components (A) and (B) are simultaneously pumped and charged, it is necessary to adjust the particle size distribution and amount of the component (B) to a viscosity range that does not cause separation. In the step of adding the component (A) to the container first and then allowing the component (B) to settle, the component (B) is added so that the component (B) after settling is below the liquid level. Is set.

The filler (B) and / or the filler in the aggregate of the present invention is used for the purpose of adjusting the viscosity of the component (A), preventing shrinkage of the cured product, and the like. The average primary particle size of the filler is selected from the range of 5 × 10 ⁻⁶ mm to 0.5 mm. The amount of the filler to be added depends on the properties of the component (A), the target viscosity, the particle size and the properties of the filler. For example,
Average particle size 15 × 10 ^-6 mm added for viscosity adjustment
Is 0.1 to 5 parts by weight based on 100 parts by weight of the component (A). In addition, viscosity adjustment,
Particle size 2.1μ used to prevent shrinkage and improve rigidity
In the case of calcium carbonate of m, it is used in a range of 50 to 300 parts by weight based on 100 parts by weight of the component (A).

On the other hand, the aggregate in the component (B) is expected to be used for its functions of preventing shrinkage, improving rigidity, reducing costs, and cleaning concrete walls while being crushed during construction. The average particle size of the aggregate ranges from 0.3 mm to 5 mm and is selected in consideration of the thickness of the bolt used, the set hole diameter, ease of handling in the manufacturing process, and the like. The amount of the aggregate to be added is determined in consideration of the resin viscosity, the presence or absence of a filler, the properties of the aggregate, the average particle size, the particle size distribution, the properties of the cured product, etc.
The range is 80 to 400 parts by weight, preferably 100 to 300 parts by weight, per 100 parts by weight of the components.

In the present invention, (C) a benzoyl peroxide, cumene hydroperoxide, methyl ethyl ketone peroxide, dicumyl peroxide, lauryl peroxide, and cyclohexanone are used as the curing agent (C) for curing the curable liquid mixture. A peroxide such as peroxide or t-butyl perbenzoate is used. Preferred are benzoyl peroxide and lauryl peroxide. The component (C) is used after being diluted with a solid or liquid diluent, and examples of the diluent include gypsum, calcium carbonate, glass beads, dioctyl phthalate, diethyl phthalate, dibutyl phthalate, and dicyclohexyl phthalate. When benzoyl peroxide is used as the component (C), the diluent is preferably dibutyl phthalate, dicyclohexyl phthalate, dioctyl phthalate, gypsum, calcium carbonate, or glass beads. The amount of component (C) is
It is 1 to 20 parts by weight, preferably 2 to 10 parts by weight, based on 100 parts by weight of the component (A). If the amount of the component (C) is less than 1 part by weight, the curing does not proceed sufficiently. On the other hand, if it exceeds 20 parts by weight, the curing is too fast or the remaining curing agent acts as a foreign substance, and the fixing strength is lowered.

In order to achieve the object of the present invention, a curing accelerator which promotes a curing reaction at room temperature is added to the component (A).
Usually done. As the curing accelerator, N, N-dimethylaniline,
Amines such as N, N-diethylaniline, N, N-dimethylparatoluidine, N, N-dihydroxypropylparatoluidine, N, N-dihydroxyethylparatoluidine, cobalt naphthenate, cobalt octoate;
Examples include metal soaps such as manganese naphthenate and calcium naphthenate, and chelate compounds such as vanadyl acetylacetonate and iron acetylacetonate.
Preferably, N, N-dimethylparatoluidine, N, N
-Dimethylaniline. The amount of the curing accelerator is from 0 to 5 parts by weight, preferably from 0.2 to 2 parts by weight, per 100 parts by weight of the component (A). When the amount of the curing accelerator exceeds 5 parts by weight, the curing accelerator functions as an impurity in the cured product, and the fixing strength is poor.

The (A) curable liquid mixture of the present invention is optionally mixed with (B) a filler and / or an aggregate,
(D) It becomes a composition and is stored in a capsule container for fixing an anchor bolt. The viscosity of the composition (D) is preferably in the range of 300 to 1,500,000 mPa · s, and more preferably in the range of 1,000 to 500,000 mPa · s. This viscosity depends on the capsule size, capsule material such as glass tube or film, aggregate,
The selection is made in consideration of the type of the filler, whether the liquid and the aggregate are separately charged or mixed and charged, and the capacity of the liquid feeding pump.

The capsule for fixing an anchor bolt of the present invention comprises a container, (A) a curable liquid mixture, (B) a filler and / or aggregate made of an inorganic solid, and (C) contained in the container. A curing agent separated from the curable liquid mixture and contained in the container; Examples of the structure of the capsule of the present invention include a crushable outer container and an inner container. In the outer container, (A) the curable liquid mixture is sealed, and in the inner container, (C) a curing agent is sealed, or (C) the curing agent is sealed in the outer container, The inner container may be sealed with the (A) curable liquid mixture. In addition, a synthetic resin film is formed in the shape of a letter “N”, and the portion where the two films are in contact with the outer and inner surfaces is heat-sealed to form a two-chamber film capsule. On the other hand, the component (C) can be sealed and both ends can be sealed (Japanese Patent Publication No. 56-18444). In any of the above methods, if necessary, the component (B) may be mixed with the component (A) or the component (C), and the components (A) and (C) may be mixed.
It may be mixed with both components.

As the capsule container, any container can be used as long as it hardly breaks during transportation or storage and easily breaks into small pieces when the anchor bolt is inserted. As a material, glass, ceramics, ceramics, synthetic resin, synthetic resin film and the like are economically preferable. The dimensions of the capsule are not particularly limited, but are generally about 8 to 30 mm in outer diameter, about 40 to 400 mm in length, and about 2 to 280 ml in inner volume in relation to anchor dimensions used for post-processing. . In addition, this capsule internal volume refers to a volume that includes a container, does not include an air space, and fills a hole when destroyed. The arrangement of the drug and the additive of the present invention in the container, the filling method, and the capsule container can be appropriately selected depending on the purpose of use of the anchoring agent for the anchor and the production process.

[0024]

The present invention will be described below in more detail with reference to Examples and Comparative Examples. Note that the present invention is not limited to the following embodiments as long as the gist is not exceeded. Parts in Examples and Comparative Examples are based on weight unless otherwise specified. In addition, the drugs, additives, and evaluation methods used in Examples and Comparative Examples are shown below.

Preparation of Drug The drug to be used was prepared as described below. (A) diester oligomer (a-1); in the above general formula (I), m + n = 2.
6 (a-2); In the above general formula (I), m + n = 4.
0 (a-3); in the above general formula (I), m + n = 10

(B) Resin component (b-1); bisphenol-based unsaturated polyester resin (unsaturated polyester resin containing bisphenol A propylene oxide adduct as glycol component) (b-2); epoxy acrylate resin (bisphenol A type) Reaction product of epoxy resin and methacrylic acid) (b-3); bisphenol A type unsaturated polyester resin (containing styrene as a reactive monomer) (b-4); orthophthalic type unsaturated polyester resin (reactivity (Including styrene as monomer)

(B) filler and / or aggregate silica stone; average particle size 2.0 mm, amorphous fine powdered silica; average particle size 12 × 10 ^-6 mm limestone powder; 50 mesh pass glass beads; 85 to 1.18 mm

Pull- out strength According to the standard test method of the Japan Building Anchor Association,
The pull-out strength was measured. Test conditions bolts; M16 (8.8) × length 170mm concrete compressive strength; 228kgf / cm ² Capsule hole; diameter 19.0 mm, length 130mm

Vibration test Using a 50 tf hydraulic servo fatigue tester, vibration was applied under the following conditions, and the amount of pull-out displacement of the anchor bolt after a predetermined number of vibrations was measured. Test conditions Bolt; M16 (8.8) × length 170 mm Concrete compressive strength: 210 kgf / cm ² Vibration conditions: Upper limit load 4 tons, lower limit load 0.5 tons Total number of vibrations: 2 million times Frequency: 8 Hz

Example 1 A glass tube having an inner diameter of 6 mm and a length of 110 mm and sealed at the bottom was filled with 1.2 g of benzoyl peroxide diluted to a concentration of 50% with dicyclohexyl phthalate, sealed, and sealed.
It was housed in a glass container having a length of 6.5 mm and a length of 120 mm. Further, in the glass container, an average particle size of about 2.0 mm
8. 20.0 g of silica stone and the following curable liquid mixture (A)
0 g was filled and sealed with a polyethylene cap to prepare a glass tube capsule.

Next, a hole having a diameter of 19.0 mm and a length of 130 mm was made in concrete having a compressive strength of 228 kg / cm ² , and the capsule was inserted into the hole. Then
M16 of 170mm length with 45 degree cut at the tip, material SN
Attach a double nut to the top of the B7 full screw bolt,
It was embedded in the hole while rotating and hitting with a hammer drill.
Next, after curing at room temperature for one day, the pull-out strength was measured. Also,
To check the durability due to concrete alkali, 40
The pull-out strength after one day was also measured. The measurement results are shown in Table 1 as an average value of three points.

Example 2 (A) A glass tube capsule was prepared in the same manner as in Example 1 except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Example 3 (A) A glass tube capsule was prepared in the same manner as in Example 1, except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Example 4 (A) A glass tube capsule was prepared in the same manner as in Example 1 except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results. Also, as in Example 1, after the prepared glass tube capsule was embedded, a vibration test was performed 7 days later. Table 2 shows the measurement results.

Example 5 (A) A glass tube capsule was prepared in the same manner as in Example 1 except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Example 6 A 25 micron thick polyethylene terephthalate film was formed into a "-" shape, and the outer and inner surfaces where the two films were in contact were heat-sealed to form a two-chamber film capsule. One side encloses 34.2 g of a composition (D) comprising the following components (A) and (B), and the other side encloses (C)
A total of 2.9 g of the component and the component (B) were sealed. Both ends were sealed with aluminum clips.

Composition of components (C) and (B): Benzoyl peroxide (diluted to 40% with dibutyl phthalate) 50 parts Limestone powder (50 mesh pass) 50 parts As in Example 1, pull-out strength after curing for 1 day After 40 days, the pull-out strength was measured. Table 1 shows the measurement results.

Example 7 Using the mixture of Example 1, a glass tube capsule was prepared in the same manner as in Example 1. A vibration test was performed under the same conditions as the vibration test of Example 4, and the measurement results are shown in Table 2.

Comparative Example 1 (A) A glass tube capsule was prepared in the same manner as in Example 1 except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Comparative Example 2 (A) A glass tube capsule was prepared in the same manner as in Example 1, except that the composition of the curable liquid mixture was changed as follows. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Comparative Example 3 The composition of the composition (D) was changed as follows,
A film capsule was prepared in the same manner as in Example 6. As in Example 1, the pull-out strength after curing for 1 day and the pull-out strength after 40 days were measured. Table 1 shows the measurement results.

Comparative Example 4 (A) A glass tube capsule was prepared in the same manner as in Example 1, except that the composition of the curable liquid mixture was changed as follows. A vibration test was performed under the same conditions as in Example 7. Table 2 shows the measurement results.

From the results shown in Table 1, it can be seen that the fixing agent for anchor bolts containing the curable liquid mixture of the present invention has excellent effects. In addition, since Example 6 is a film-type capsule and is small in aggregate, it is inferior to Examples 1 to 5, but exhibits practically sufficient strength. More specifically, in comparison between the comparative example and the example, the value of m + n is 1
In the case of Comparative Example 1, which is 0, there is no effect as seen in the example. In Comparative Example 2, even if a bisphenol A type polyester having resistance to alkali of concrete is used, a large strength is not obtained, and the excellent effects of Examples 1 to 5 are supported. In Comparative Example 3, Example 6
Orthophthalic acid-type unsaturated polyester was used as a film type similar to the above, but strength was reduced after 40 days due to alkali of concrete. On the other hand, in the other Examples and Comparative Examples, the strength tended to be rather improved. Also, from the results in Table 2, in Example 7, the increase in displacement after applying 2 million vibrations was small, and the composition of the present invention was excellent in vibration resistance as compared with Comparative Example 4. I understand.

[0044]

[Table 1]

[0045]

[Table 2]

[0046]

According to the present invention, the diester oligomer represented by the general formula (I) (where R ¹ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and m + n = 2.4 to 6.
0) as a main component, by using a curable liquid mixture having an excellent fixing force that can withstand loads due to repeated loads, and a fixing agent for fixing an anchor bolt, which does not cause deterioration in performance due to alkali in concrete. An anchor bolt fixing capsule can be provided, and is particularly useful in a post-installation anchor method for a concrete base material.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J027 AB07 AB08 AB15 AB16 AB18 AC03 AC06 BA05 BA07 BA08 BA09 BA19 BA20 BA22 CA14 CA18 CA19 CB03 CD00 4J100 AB02Q AB03Q AB04Q AB16Q AL03Q AL04Q AL08Q AL08R AL09Q AL10Q AL66P AL66QBA75Q08 BC04Q BC08Q BC43Q BC45P BC54R CA01 CA04 CA05 JA03 JA67

Claims (2)

[Claims] (A) 50 to 100 parts by weight of a diester oligomer represented by the following general formula (I): (However, the above two R ¹ are the same or different and each represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and m + n =
2.4 to 6.0. (B) 0 to 30 parts by weight of at least one resin selected from the group consisting of unsaturated polyester resin, epoxy acrylate resin, polyester acrylate resin, and urethane acrylate resin; and (c) reactive monomer 0 to 50. Parts by weight [However, (a) +
(B) + (c) = 100 parts by weight] (A)
An anchor bolt fixing agent containing a curable liquid mixture. 2. A container, (A) the curable liquid mixture according to claim 1 housed in the container, (B) a filler and / or aggregate made of an inorganic solid, and (C) the curable liquid. An anchor bolt fixing capsule having a curing agent separated from the liquid mixture and contained in the container.