JP4060108B2 - Fixing method of metal expansion anchor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for fixing a post-installed anchor that attaches an anchor to a buried hole, and in particular, a fixing element that exhibits adhesiveness by a curing reaction of a radical curable resin to a metal expansion anchor that has an expanded portion and is mechanically fixed. The present invention relates to a fixing method using a fixing material in combination.
[0002]
[Prior art]
Conventionally, so-called post-construction anchors that are fixed to a structure such as reinforced concrete by post-construction use a drilling machine such as an electric tool to drill a concrete body to form a buried hole, and are fixed to this buried hole. It has become so. Post-installed anchors are roughly classified into metal expansion anchors and adhesive anchors according to the fixing method. The metal expansion anchor is a metal anchor having an expansion portion that expands by a mechanism such as “driving” or “nut tightening”. The fixing method of the metal expansion anchor is to mechanically fix the anchor to the embedded hole by inserting the anchor into the embedded hole and expanding the expanded portion. The adhesive anchor is a combination of an anchor bolt and an adhesive. The fixing method is to fill the buried hole with an adhesive, and then insert the anchor bolt into the buried hole by rotation or blow. The anchor bolt is fixed with an adhesive.
[0003]
Here, the fixing element fixing material used as the adhesive includes a capsule type and an injection type. As for the capsule type, for example, a cylindrical glass tube or a plastic tube container in which a resin component and a curing agent component are separately accommodated is generally used. The fixing material in this form is cured by rotation and impact of the anchor bolt. Some harden just by striking the anchor bolt. The injection mold is a form in which the adhesive is directly injected into the buried hole.
[0004]
The metal expansion anchor has the merit that an object can be attached by applying a load to the anchor at the same time as construction, but since there is a gap between the buried hole and the anchor, the corrosion resistance at the fixed part is not good, water leakage This may cause deterioration of the concrete inside, may cause co-rotation of the metal expansion anchor body against the tightening torque when tightening nuts, etc., tends to be susceptible to repeated shear loads, etc. Disadvantages have also been pointed out.
On the other hand, the adhesive anchor has the merit that the gap between the anchor bolt and the hole can be completely filled with the adhesive, but the demerit that the anchor cannot be loaded until the adhesive hardens after construction. There is.
[0005]
Therefore, in recent years, a fixing method combining a metal expansion anchor and an adhesive has been proposed. In this case, the above-described conventional capsule-type fixing material or injection-type fixing material can be used.
Also, Japanese Patent Publication No. 6-78502 uses a capsule-type fixing material comprising a thin film container that can be expanded and contracted, containing the main component of the adhesive in the container, and imparting the curing agent component to the outer surface of the container. Is disclosed.
[0006]
[Problems to be solved by the invention]
However, the conventional capsule-type fixing material has a problem that the crushed material of the container hinders the expansion of the anchor, and the construction itself cannot be performed or sufficient strength cannot be obtained. In addition, in the method of injecting the adhesive, handling and storage of the adhesive is troublesome, and it is necessary to provide a hole for injecting the adhesive in the metal expansion anchor. There was a problem in the injection work, such as the need to pay attention to the site.
In the method disclosed in Japanese Examined Patent Publication No. 6-78502, the possibility of hindering the diffusion of the main ingredient due to the thin film container remaining in the vicinity of the bottom of the buried hole cannot be excluded.
[0007]
Accordingly, an object of the present invention is to solve the conventional problems caused by the combined use of such a metal expansion anchor and a fixing material.
[0008]
[Means for Solving the Problems]
  Thus, as a result of various studies on the fixing material, the present inventors have found that the main component of the cured resin is provided in a solid form having a predetermined shape, and according to such a fixing material, the conventional problems described above are provided. The present invention has been completed.
  That is, according to the present invention, the following means are provided.
  (1) A method for fixing a metal expansion anchor,
  The surface of the composition containing an uncured radical curable resin is provided with a predetermined shape having a binder phase composed of a radical curable resin layer cured by applying a curing agent for the radical curable resin to the surface of the composition. A composition containing a curing agent of an uncured radical curable resin in a range where the curing agent is 1 to 10% by weight based on the weight of the fixing material precursor on the surface of the fixing material precursor. By spraying or spraying,Solid core containing uncured radical curable resin and the surface of this coreHardRadical curable resinConsist ofA curing agent phase containing a curing agent of the radical curable resin having a skin shape that covers at least a part of the surface layer side through a binder phase,No capsules or packagingInserting the fixing element fixing material into the buried hole;
  Inserting a metal expansion anchor into the buried hole and crushing the fixing element fixing material;
  Expanding the expanded portion of the metal expansion anchor inserted into the buried hole before the curing of the radical curable resin is completed;
A method comprising:
  According to this fixing method, by inserting a fixing material into the embedded hole, an uncured radical curable resin is provided in the embedded hole in a solid core portion, and a curing agent is provided in the core. Provided in a form constituting at least a part of the surface side of the part. For this reason, when crushed by insertion of the metal expansion anchor, the uncured radical curable resin and the curing agent are well mixed and contacted. Furthermore, both uniformly fill the gap between the anchor and the buried hole, and in an uncured state, the metal anchor is not hindered. For this reason, construction is easy and sufficient fixing strength can be obtained by the combined use of the metal expansion anchor and the fixing material.
  (2) Before the step of inserting the fixing element fixing material into the embedding hole, the fixing element fixing material having a shape corresponding to one of the embedding holes is integrated in a separable manner. The anchor fixing method according to (1).
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
(Fixing material)
The fixing element fixing material of the present invention includes a solid core containing an uncured radical curable resin and a curing containing a curing agent for the radical curable resin constituting at least part of the surface side of the core. And a drug phase. Preferably, only the core part and the curing agent phase are provided. That is, the conventional container is not provided.
[0010]
(Core part)
The core portion contains a composition containing an uncured radical curable resin (hereinafter simply referred to as an uncured resin composition). The core portion contains an effective amount of an uncured radical curable resin effective for fixing an anchor or the like to the fixing hole, for example, in order to fix the anchor or the like to the fixing hole when using the fixing material. Although it does not specifically limit as radical curable resin, Epoxy acrylate resin, polyester acrylate resin, acrylic urethane resin, unsaturated polyester resin, etc. are included. In particular, it is preferable to use an epoxy acrylate resin and / or an unsaturated polyester resin among radical curable resins. As the radical curable resin, the above-mentioned radical curable resins can be used alone or in combination of two or more.
[0011]
In addition to any of these radical curable resins, a reactive monomer may be mixed and used for the uncured resin composition. Such reactive monomers include styrene monomer, methyl (meth) acrylate, ethyl (meth) acrylate, ethylene glycol dimethacrylate, cyclohexyl phthalate, n-butyl methacrylate, 2-hydroxyethyl (meth) acrylate, benzyl (meth) ) Acrylate, phenoxyethyl (meth) acrylate, 1,4-butylene glycol di (meth) acrylate, trimethylolpropane trimethacrylate, dimethyl maleate, isobornyl (meth) acrylate, butanediol (meth) acryl Rate, 2-hydroxyethyl (meth) acrylate, 2,2-bis [4- (methacryloxy-diethoxy)] phenylpropane, and the like.
These radical curable resins or components obtained by adding reactive monomers to these resins (hereinafter also referred to as main agents) are preferably used in the composition in an amount of less than 100% by weight. More preferably, it is 20 to 60% by weight.
[0012]
Moreover, the said composition can contain the hardening accelerator of radical curable resin. Such curing accelerators include N, N-dimethylaniline, N, N-diethylaniline, N, N-dimethyl-P-toluidine, N, N-dihydroxypropyl-P-toluidine, N, N-dihydroxyethyl-P. -Aromatic anilines such as toluidine, metal soaps such as cobalt naphthenate, and chelate compounds such as vanadyl acetylacetonate. These curing accelerators are added in a range of, for example, 0.1 to 5% by weight with respect to the radical curable resin.
[0013]
Moreover, it is preferable that the said composition contains the additive for solidifying the said composition, forming as a solid substance, and maintaining the form. Specifically, inorganic compounds such as silicic acid, calcium carbonate, gypsum, glass flake, mica, volcanic ash, shirasu, shirasu microballoon, concrete powder, glass microballoon, hollow glass, fly ash, carboxymethylcellulose, methylcellulose, guar gum, Polysaccharides such as locust bean gum, gelatin, PVA, gum arabic, microcrystalline cellulose, amylose, and amylopectin can be used. Colloidal silica, fumed silica, silica aerogel, organic modified clay, clay, silica powder, cellulose acetate, sepiolite, Aerosil (trade name, manufactured by Nippon Aerosil Co., Ltd.), Thixogel (trade name, manufactured by Yokohama Kasei Co., Ltd.), etc. Thixotropy-imparting agent. In the present invention, these additives can be used alone or in combination of two or more. Preferably, silicon dioxide, calcium carbonate, and calcium silicate can be preferably used, but silicon dioxide is particularly preferable.
Such an additive is preferably used in a range of 300% by weight or less with respect to the radical curable resin, and more preferably in a range of 5 to 50% by weight.
[0014]
Moreover, aggregate can also be contained in this uncured resin composition. The aggregate to be used is not particularly limited, and magnesia clinker, artificial aggregate such as glass and ceramics, or natural inorganic aggregate such as meteorite, marble, granite, quartz sand, and quartz can be used. Further, it may be an organic aggregate made of hard plastic such as hard vinyl chloride. Preferably, the aggregate in the unit is selected in form and / or size such that it is dispersed throughout the resulting solid unit.
[0015]
Furthermore, a colorant can be added to the uncured resin composition as necessary. When the first unit is exposed to the outside and colored so as to be visually recognized, the product can be easily given product identification and the like.
[0016]
(Curing agent phase)
The surface of the core part is provided with a phase containing a curing agent for the uncured radical curable resin contained in the core part.
The curing agent phase contains a composition (hereinafter simply referred to as a curing agent composition) containing a curing agent for an uncured radical curable resin contained in the core portion.
Examples of the curing agent include hydroxides such as cumene peroxide, dialkyl peroxides such as dicumyl peroxide, diacyl peroxides such as benzoyl peroxide, ketone peroxides such as methyl ethyl ketone peroxide, and bis- ( 4-t-butylcyclohexyl) peroxyketals, organic peroxides such as peroxyesters such as t-butylperoxybenzoate, and organic peroxides such as dicyclohexyl phthalate, calcium carbonate, Those diluted with an inorganic substance such as calcium sulfate can also be used. Preferred are peroxide curing agents, particularly preferred are diacyl peroxides, and more preferred are benzoyl peroxide and benzoyl peroxide diluted with a diluent.
In the present invention, these various curing agents can be used alone or in combination of two or more.
[0017]
Furthermore, the hardening | curing agent composition can contain the additive (molding agent) for containing a hardening | curing agent and giving a predetermined shape as needed. Specific examples include carboxymethylcellulose, methylcellulose, guar gum, locust bean gum, gelatin, PVA, gum arabic, microcrystalline cellulose, polysaccharides such as amylose and amylopectin, and vinyl acetate. Gypsum, clay, sodium silicate, calcium silicate, etc. can also be used. Furthermore, various adhesives, preferably acrylic adhesives can be used. In the present invention, these additives can be used alone or in combination of two or more.
[0018]
In addition to these, a suitable filler can be included in the curing agent composition. For example, a fibrous body, a powdered body, a granular body, a chip or a flake-shaped body. These fillers can contribute to the improvement of moldability and strength on the surface layer side of the core part, or the curing agent phase.
Furthermore, a colorant can be added to the composition as necessary. When the composite is formed such that the curing agent phase is exposed to the outside and is visually recognized by coloring, product identification and the like can be easily imparted to the composite.
Further, the composition may contain an aggregate. The aggregate is not particularly limited, but magnesia clinker, artificial materials such as glass and ceramics, or natural inorganic aggregates such as meteorite and quartz can be used. Further, it may be an organic aggregate made of hard plastic such as hard vinyl chloride.
In particular, the curing agent phase in the present invention preferably contains a peroxide curing agent such as benzoyl peroxide as a curing agent, an acrylic adhesive as a molding agent, and calcium sulfate as a filler.
[0019]
The curing agent composition can take various compositions. It can also be set as the structure which contains 90% or more and 100% or less of a hardening | curing agent. Further, for example, as the composition of the curing agent composition, a peroxide curing agent such as benzoyl peroxide is 20% by weight to 60% by weight (preferably 35% by weight), and a molding agent (preferably PVA) is 0.1% by weight. % To 3.0% by weight (preferably 2% by weight) and a filler (preferably calcium sulfate) 40% to 80% by weight (preferably 63% by weight).
[0020]
(Compound form of core and hardened material phase)
The fixing element fixing material used in the present invention has various forms as long as it has a solid core part and a curing agent phase containing a curing agent of the radical curable resin constituting at least part of the surface side of the core part. Can be taken. For example, the core portion may be a solid unit having a predetermined shape, and may have any hardness, viscosity, shape, or the like. Preferably, the core part itself has a shape retaining property or strength capable of maintaining a given shape. Specific examples of the shape include a rod-like body, a spherical shape, and an indefinite shape.
The curing agent phase is not particularly limited in its existence form, but is preferably a skin shape covering the surface of the core portion, and more preferably a skin shape covering substantially the entire outer surface of the core portion. Moreover, the hardening | curing agent phase may be comprised from two or more layers, the layer containing a different hardening | curing agent composition may be laminated | stacked, and the layer containing the hardening | curing agent composition of the same composition is laminated | stacked. May be. Furthermore, between the laminated | stacked hardening | curing agent composition content layers, the above-mentioned radical hardening type resin composition content layer can also be interposed other than the layer which mainly has an aggregate.
Further, in relation to the aggregate, the core part can be formed so as to contain the aggregate on the center side of the core part in addition to the form in which the aggregate is contained in the entire core part.
[0021]
For example, the composite form which this material for fixation can take can be illustrated in FIGS.
In the fixing material 1 shown in FIG. 1, the core portion 2 has a rod-like shape, and the curing agent phase 4 has a skin shape that covers part or all of the outer surface of the rod-like core portion 2. It has a rod-like form as a whole.
According to such a composite form, it is easy to obtain a preferable quantitative ratio between the uncured radical curable resin and the curing agent. Moreover, it is easy to ensure mixing uniformity at the time of destruction. Further, by making the size of the rod-like body approximately coincide with the size of the usually used fixing material, it can be used as it is as the fixing material. For example, the cross-sectional area is about 0.3 to 3.0 cm²And a length of 5 to 500 mm (usually 20 to 150 mm).
[0022]
The fixing material 21 shown in FIG. 2 includes a plurality of curing agent phases 24 and 34 on the surface layer side of the core portion 22. A phase 32 containing an uncured resin composition can also be provided between the curing agent phases 24 and 34.
[0023]
The fixing material 41 shown in FIG. 3 has a form in which a plurality of fixing materials (corresponding to one embedded hole) 41a are integrated in a separable manner. The connection form is not particularly limited, and a form in which the fixing material 41a can be easily separated at the time of use can be adopted. In FIG. 3, although it is the form connected in the width direction, it can be set as the state connected in tandem to the length direction of the rod-shaped adhering material 41a, for example. Such a fixing material 41 is a preferable distribution / supply mode for a fixing material having a large number of used.
[0024]
In the vicinity of the interface where the core portion and the curing agent phase contact, a cured radical curable resin, which is a result of a reaction between the uncured radical curable resin contained in the core portion and the curing agent contained in the curing agent phase. It is included. The phase (bonding phase) containing such a cured radical curable resin is such that the uncured radical curable resin and the curing agent react at the contact site when the core portion and the curing agent phase come into contact with each other. In particular, the existence form is not specified.
The uncured radical curable resin contained in the core portion needs to be compounded in an isolated state having curing reactivity until the fixing element fixing material is used. The isolation state in the fixing material of the present invention is ensured by a cured radical curable resin generated near the interface between the core portion and the curing agent phase.
[0025]
As shown in FIG. 3, in the fixing element fixing material 41 of the present invention including the core portion and the curing agent phase, two or more divided bodies each including the core portion and the curing agent phase are included in a part thereof. A partition 46 that can be formed can be provided. Such a split part 46 can be a weak part that can be easily split usually by hand or by applying an impact with an appropriate instrument from the outside. Such a dividing portion 46 is formed, for example, at the boundary portion to be divided, by forming a cross-sectional area of the fixing material smaller than the surroundings, forming a line-shaped recess, or a recess that makes it easy to install a device for applying an impact. Various forms such as forming can be adopted. A form suitable for divisional use can be adopted as necessary. In addition, when the division part 46 is concave shape, it is preferable that the deepest part of the concave part has reached the core part.
[0026]
In the fixing material of the present invention, the curing agent is preferably 1 to 70% by weight with respect to the weight of the core part. If it is less than 1% by weight, there is too little curing agent, and a sufficient cured state of the radical curable resin cannot be obtained. If it exceeds 70% by weight, problems are likely to occur in the moldability and strength of the cured resin. More preferably, it is 1 to 10% by weight based on the weight of the core part, and this range is particularly preferable in a peroxide type curing agent such as benzoyl peroxide. Moreover, it is preferable that a hardening | curing agent weight is 1 to 20 weight% with respect to the weight (a reactive monomer is included) of uncured radical curing type resin.
[0027]
Next, a method for manufacturing the present fixing material will be described.
As a manufacturing method of the present fixing material, it is preferable to prepare a core portion first.
A core part can be obtained by making a non-hardened resin composition into the solid body of the predetermined shape obtained by various shape provision means, such as extrusion, compression, filling, casting, a press, a roll, for example. In addition, after forming the core part, prior to finally forming the curing agent phase, the radical curable resin layer is cured on the surface by applying a curing agent of the radical curable resin to the surface of the molded body. It is preferable to provide (this type is referred to as a fixing material precursor). As a result, good shape retention can be obtained and handleability is also improved.
[0028]
  Or a core part supplies the hardening | curing agent (it may be a hardening | curing agent containing composition) of the said radical curable resin to the surface of the composition containing uncured radical curable resin, Then, predetermined | prescribed It can be obtained by applying a shape. In this case, the fixing material precursor can be obtained simultaneously with the core portion. An arbitrary shape can be easily imparted to the core part by supplying a curing agent to the core part, that is, supplying a curing agent before molding. Moreover, according to such a process, the composite form of a core part and a hardening | curing agent phase can be obtained at once.The
[0029]
In addition, in order to obtain a core part, it is preferable to use the uncured resin composition mix | blended for shaping | molding. Particularly preferably, an uncured resin composition containing a molding agent is used. The composition can be added with a medium such as water in order to impart appropriate fluidity and the like before molding.
[0030]
  Obtained in the above shape application processFixing materialA composition containing a curing agent for an uncured radical curable resin contained in the core portion is supplied to the surface of the precursor. Preferably, it gives to the whole surface of a core part. The supply form is not particularly limited. Spraying, spraying, etc. can be selected and adopted as appropriate. HardBy the radicalized curable resin, the curing agent-containing composition is well integrated with the surface of the core part, and a curing agent phase is formed. At the same time, it is possible to maintain the curing reactivity of the uncured radical curable resin inside the surface of the core part.
[0031]
Thus, the fixing material used by this invention can be obtained by supplying a hardening | curing agent containing composition to the surface of a solid core part. The fixing material is preferably dried or cured for a certain period after supplying the curing agent composition.
[0032]
Next, a method for fixing the metal expansion anchor using the fixing material will be described with reference to FIGS. In addition, as a metal expansion anchor, it can apply to conventionally various well-known various metal expansion anchors, such as a core rod driving type, a sleeve driving type, and a double cone nut type. For example, by hitting the head with a hammer etc., the extension at the bottom of the bolt is inserted into the buried hole so that the cylindrical extension covers the extension. The present invention can be applied to any of the tightening methods in which the extension portion enters the embedded hole so as to cover the taper portion and the extension portion expands.
FIG. 4 shows an example of a construction completion form by hitting a sleeve driving type metal expansion anchor. In this form, a sleeve having an expandable skirt portion is driven into a bolt having a bottom portion that expands in a tapered shape, the skirt portion is expanded, and the tip end side is bitten into the embedded hole and fixed. Yes. By fixing the bolt and the sleeve, the fixing material previously inserted in the buried hole is destroyed, and as shown in FIG. 4, the space between the metal expansion anchor and the inner wall of the buried hole can be filled without a gap.
[0033]
Next, a specific construction process will be described.
As shown in FIG. 5, first, a buried hole is drilled in a base material such as concrete by a conventional method. Thereafter, the inside is cleaned with a suction or blower, a dedicated metal brush, and further with a suction or blower. Thereafter, the fixing material is inserted. In this process diagram, the fixing material is a columnar body having an outer diameter smaller than the inner diameter of the buried hole.
Next, a metal expansion anchor is inserted into the buried hole. Thereafter, the sleeve is driven to expand the skirt portion of the sleeve. Insertion is usually done with a blow. By such insertion, the fixing material previously filled in the buried hole is crushed. By this crushing, the core part and the curing agent phase constituting the fixing material are broken and mixed. As a result, the uncured radical curable resin contained in the core portion and the curing agent contained in the curing agent phase are mixed and contacted. The curing reaction starts when the uncured radical curable resin comes into contact with the curing agent.
[0034]
Prior to completion of such a curing reaction, the presence of these mixtures does not substantially interfere with the expansion of the metal expansion anchor. Preferably, the metal expansion anchor is expanded by a predetermined method while the mixture is maintained in a softened state to some extent.
By expansion of the metal expansion anchor, the mixture before the completion of the curing reaction moves as the metal anchor expands, and finally, the gap between the metal anchor expanded by a predetermined amount and the inner wall of the embedded hole is satisfactorily filled.
After completion of the curing reaction, preferably, the metal expansion anchor is fixed to the embedded hole with sufficient strength by curing for a predetermined time after the completion of the curing reaction.
[0035]
As described above, by applying this fixing material to the fixing method of the metal expansion anchor, the adhesive that does not hinder the expansion of the metal expansion anchor and is hardened between the expanded metal expansion anchor and the inner wall of the buried hole. Is satisfactorily filled. Therefore, it is possible to realize the fixing with the adhesive and the metal expansion anchor without complicating the operation for fixing. In addition, sufficient fixing strength can be ensured.
Further, the metal expansion anchor does not require a special configuration for use with an adhesive.
[0036]
【Example】
Hereinafter, specific examples of the present invention will be described, but the present invention is not limited to the following examples.
The main component resin obtained by mixing 3 g of a molding agent (calcium silicate) that gives shape-retaining properties and extrudable properties and 9 g of natural No. 7 silica sand to 15 g of unsaturated polyester resin, which is a radical curable resin, Discharge from the opening nozzle (12 mm in diameter) of the machine, cut with an air cutter at a length of 70 mm, apply 2 g of a powder hardener of peroxides to the outer surface of the cut material, and leave it at room temperature for 2 hours or more. The core portion (fixing material precursor) was used.
Further, a curing agent composition is prepared by mixing 3 g of a peroxide curing agent with 7 g of a filler and 1 g of solid powder POVAL with 10 g of water, and this curing agent composition is applied to the entire surface of the fixing material precursor. After supplying and drying for 24 hours, a fixing material having an outer diameter of 8 mm and a length of 70 mm was obtained.
[0037]
The following strength test was performed on the fixing material.
Compressive strength 21N / mm²The concrete block is drilled with a diameter of 12.7 mm and a depth of 80 mm.
After the fixing material prepared in Example 1 having an outer diameter of 8 mm and a length of 70 mm was inserted into the drilled hole, a metal expansion anchor having a nominal diameter of 8 mm and a length of 120 mm manufactured by KFC Co., Ltd. ) Was driven with a hammer through a dedicated driving rod to a certain depth. Simultaneously with this driving, the expansion part was expanded.
The fixing material is easily broken, the mixing of the uncured resin and the curing agent is good, and the cured product is sufficiently filled with the gap between the metal expansion anchor and the inner wall of the buried hole. The workability could be confirmed.
[0038]
Furthermore, about the three anchors constructed in this way, the maximum pull-out load was measured with a hydraulic measuring machine after 24 hours of placement curing, and all were 30 kN, indicating good and stable fixing strength. Moreover, the rigidity of the anchor was also good.
[0039]
【The invention's effect】
According to the present invention, it is possible to provide a combined construction method of a metal expansion anchor and this fixing material, which is easy to construct and can obtain sufficient fixing strength.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a fixing material used in the present invention.
FIG. 2 is a view showing an example of a fixing material used in the present invention.
FIG. 3 is a view showing an example of a fixing material used in the present invention.
FIG. 4 is a diagram showing an example of a construction completion form of a metal expansion anchor using a fixing material according to the present invention.
FIG. 5 is a diagram showing an example of a construction process of a metal expansion anchor using a fixing material according to the present invention.
[Explanation of symbols]
1, 21, 41 Fixing material
2,22 Core part
4, 24, 34 Hardener phase
46 division

Claims (2)

A metal expansion anchor fixing method,
The surface of the composition containing an uncured radical curable resin is provided with a predetermined shape having a binder phase composed of a radical curable resin layer cured by applying a curing agent for the radical curable resin to the surface of the composition. A composition containing a curing agent of an uncured radical curable resin in a range where the curing agent is 1 to 10% by weight with respect to the weight of the fixing material precursor on the surface of the fixing material precursor. by spraying or dusting, and the core portion of the solid containing the curable resin uncured, at least a portion of the surface layer side through a binder phase consisting of hard phased curable resin on the surface of the core portion A step of inserting a fixing element fixing material having a hardener phase containing a curing agent of the radical curable resin, having a cover form to cover, and not having a capsule or packaging into the embedded hole;
Inserting a metal expansion anchor into the buried hole and crushing the fixing element fixing material;
Expanding the expanded portion of the metal expansion anchor inserted into the buried hole before the curing of the radical curable resin is completed;
A method comprising:   2. Prior to the step of inserting the fixing element fixing material into the embedding hole, a plurality of the fixing element fixing materials having a shape corresponding to one embedding hole are integrated in a separable manner. The anchor fixing method as described in 1.

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