JP3437982B2 - Anticorrosion insert device, method of burying the same, and injection device for filling fixative - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various components (buildings, highways, bridge girders, underground structures, concrete structures such as utility poles, stone structures such as quays and stone walls, and other structures made of various building materials, etc. ) Related to the anticorrosion insert device to be used by being embedded.

[0002]

2. Description of the Related Art Generally, an insert device of this type is composed of an insert body used as a female member and a bolt used as a male member, and the insert body is previously embedded in a concrete structure. A configuration in which a bolt is screwed into a screw hole to be coupled is widely known.

[0003]

However, in the conventional insert device, since the insert body is made of metal such as iron, it corrodes in the concrete within a short period of time, and the insert body as well as the concrete body can be used. There was a problem that it would deteriorate even.

Therefore, in the past, for example, the actual fairness 2-800
As disclosed in Japanese Patent Laid-Open No. 2 (1994), there is a case where an insert body is formed by a body portion made of ceramics and a tubular portion forming a bolt insertion hole. However, the one disclosed in the above publication is one in which the insert body is embedded in advance at the time of pouring concrete, and it is desired to embed the insert body in an existing concrete structure or the like to enable attachment of various members. Couldn't answer.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an anticorrosion insert device which can be widely embedded and fixed in various existing structures, not when concrete is poured.

[0006]

An anticorrosive insert device according to claim 1 of the present invention has an insert element body having a fixing hole and embedded in a hole provided in a structure through a filling fixing agent, The filling fixing agent is composed of an insertion hole provided from the surface to the fixing hole and a fixing tool which is inserted through the insertion hole and coupled to the fixing hole, and is composed of a main agent and a curing agent as the filling fixing agent. , Using an adhesive with low viscosity and large thixotropy.

Embedding the anticorrosion insert device according to claim 2
The method includes an inserter having a fixing hole to which a fixing member is connected.
Connect the tip of the guide rod to the fixing hole of the
Insert element body at the tip in the hole provided with the id rod in the structure
And insert it while engaging around the hole of the component ,
Fill the space in the hole of the component with the filling fixative, and
After solidifying, remove the guide rod and insert into the filling fixative.
While embedding the element body, insert it from the surface of the filling fixative.
Form the insertion hole of the fixture up to the fixing hole of the
Room temperature curing tie consisting of a main agent and a curing agent as a filling and fixing agent.
The adhesive used is about 10,000 cP or less at 25 ° C.
Lower viscosity and thixotropy index
Has a thixotropy of about 3.5 or less.

An anticorrosive insert device according to a third aspect of the present invention has the same structure as that of the first aspect, and uses an adhesive which is composed of a main agent and a curing agent as a filling and fixing agent and which is compatible with a wet surface.

An anticorrosive insert device according to a fourth aspect has the same structure as that of the first aspect, is composed of a main agent and a curing agent as a filling fixing agent, is cured at about 5 ° C. or higher, and after 16 to 24 hours has a normal value of about An adhesive having a mechanical strength of 80% or more is used.

An anticorrosive insert device according to a fifth aspect has the same structure as that of the first aspect, and comprises a main agent and a curing agent as a filling fixing agent, and the main agent is a bisphenol A type epoxy resin as a base and a reactive diluent of about 5 parts. In addition to 10%, high-dispersion silicon dioxide, which is a thixotropic agent, is added in an amount of about 2 to 4%, and the curing agent is a modification based on an amine-based resin for wet surface adhesion to have low-temperature fast-curing properties. Compounded with an aliphatic amine, a high-dispersion silicon dioxide, which is a thixotropic agent, is added to about 2 to 4
% Adhesive is used.

Filling of anticorrosion insert device according to claim 6
The fixative injection device uses an adhesive composed of a main agent and a curing agent as a filling fixative , and stores the main agent and the curing agent separately in two cylinders provided in a columnar body, and the main agent and the curing agent are columnarized by a piston. It is designed such that it is extruded into a tubular mixing section connected to the body for mixing, and is injected into the hole of the constituent from the tip of the mixing section.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 2A to 2C are explanatory views of the method for manufacturing the anticorrosion insert device according to this embodiment, and in FIG. 2A, reference numeral 1 is a barrel-shaped insert element body. The insert element body 1 is made of ceramics,
At the center, a fixing hole (screw hole) 1a for connecting (screwing) with a fixing tool (for example, a bolt, not shown) for mounting various members is provided. 2 has a coupling portion (screw portion) 2a formed at the tip portion and a collar portion 2b at the portion near the base.
It is a guide rod made of iron in which the joint portion 2a of the guide rod 2 is joined (screwed) to the fixing hole 1a of the insert element body 1 from the small-diameter end portion of the insert element body 1.
Further, the collar portion 2b has a filling fixative injection port 2c and an exhaust port 2d.
Is provided.

Next, as shown in FIG. 2B, the guide rod 2 is inserted into the hole 3a formed in the structure 3 such as a concrete structure.
Is inserted with the insert element body 1 at the tip. At this time, the flange portion 2d engages with the peripheral portion of the hole 3a of the component 3 and serves to position the insert element body 1. It should be noted that the surface of the guide rod 2 is sufficiently coated with a release agent such as silicon. Next, the filling fixative 4 is injected from the injection port 2c to fill the space in the hole 3a.

Next, as shown in FIG. 2C, after solidification of the filling fixative 4, the guide rod 2 is rotated to pull out the guide rod 2 from the insert element 1 and the filling fixative 4. As a result, a fixing tool (bolt) 5 is inserted through the hole 6a of the fixed member 6 into the insertion hole 4a formed in the filling fixing agent 4 as shown in FIG. 1, and the connecting portion (screw portion) 5a thereof is inserted into the insert element. Body 1
The fixed member 6 is fixed to the component 3 by being connected (screwed) to the fixing hole 1a.

As the filling and fixing agent 4, a solventless type room temperature curing type adhesive composed of two liquids of a main agent and a curing agent is used, and this adhesive is injected from an injection port 2c using an injection device. At this time, the worker needs to apply pressure to the injection device to push out the adhesive, and the adhesive is about 10,000 at 25 ° C.
A low viscosity of cP (centipoise) or less is required. Further, thixotropicity is ideally desired to have a thixotropy index (TI) of about 2.0 to 3.0, but actually it needs to be about 3.5 or less. This is because if the viscosity is 10,000 cP or more at 25 ° C., a large force is required to extrude the adhesive and workability is deteriorated.
However, when the temperature is less than 5000 cP at 25 ° C., there is a possibility that the injected adhesive may flow out during the construction of the ceiling portion of the structure 3 even if thixotropic. Also, the viscosity is 5000c
When the TI at P is 3.5 or more, the fluidity of the adhesive deteriorates, and a portion where the adhesive does not spread is formed in the hole 3a, and a nest is formed in this portion.

Further, it is necessary that the filling and fixing agent 4 is hardened even when the constituent 3 is in a wet state and can be applied to a so-called wet surface having a predetermined adhesive strength. Hole 3a of component 3
Is often in a wet state with ground water, etc., and when an ordinary amine-based curing agent that does not correspond to a wet surface is used, the curing state becomes non-uniform, resulting in poor adhesion to the interface of the component 3 and a filling fixing agent. 4 may come out of the hole 3a.

When the composition 3 is outdoors or in an underground cavern and is in a cold region, the filling fixative 4 hardens even when the ambient temperature (temperature of the hole 3a) is about 5 ° C., and after filling 16 After about 24 hours, it is necessary to have a mechanical strength of about 80% or more of the normal value. However, the gelation time at 5 ° C. is 1-1.
When it reaches about 5 hours, a reaction occurs in the mixed portion of the main agent and the curing agent of the injection device, which causes thickening and solidification. Therefore, the gelling time at 5 ° C. is appropriately about 120 minutes.

As described above, the adhesive as the filling / fixing agent 4 is a two-part adhesive having a relatively low viscosity, thixotropic property, good adhesion to the wet surface, and excellent low temperature curability. It is necessary to use a solventless, room temperature curing type adhesive, but specifically describing an adhesive that satisfies the above conditions, the main component is a bisphenol A type epoxy resin and a reactive diluent of about 5 parts. 10% by weight, and about 2-4% of highly dispersed silicon dioxide (having good storage stability capable of connecting thixotropy) in order to impart thixotropy. On the other hand, as the curing agent, a metaxylylenediamine (MXDA) -based modified aliphatic amine is used in combination with an amine resin for wet surface adhesion (for example, long-chain aliphatic amine, polyamidoamine, etc.) as a base in order to satisfy the low temperature fast curing function. However, about 2 to 4% of highly dispersed silicon dioxide, which is a thixotropic agent, is blended.

Further, the wet surface-compatible curing agent as described above is
Poor compatibility with the base resin, epoxy resin, will result in cured product properties,
In particular, the variation in mechanical strength becomes large. Therefore, in order to improve the compatibility, the bisphenol A type epoxy resin is used as described above, and the liquid type and low viscosity epoxy resin is used from the viewpoint of workability described above. For this reason, modified types such as rubber modified (NBR modified, CTBN modified
A bisphenol A type (modified, etc.) is suitable. As the reactive diluent, a monofunctional glycidyl ester type (for example, Cardura E of Yuka Shell Epoxy Co., Ltd.)
(Trade name) ) , monofunctional glycidyl ether type (eg PGE, BGE or AGE), bifunctional glycidyl ether type (eg ED5 of Asahi Denka Co., Ltd.)
03 (trade name) etc. is used. Further, as a highly dispersed silicon dioxide which is a thixotropic agent, a general-purpose grade (for example, Aerosil 200 manufactured by Nippon Aerosil Co., Ltd.) is used.
(Brand name) has no thixotropic persistence, that is, thermal stability,
Immediately after production, it is good, but as the number of days passes, the TI gradually decreases. Therefore, a material having good thermal stability (for example, R-202 of Nippon Aerosil Co., Ltd.) is used.

FIG. 3 is a vertical cross-sectional view of an apparatus for injecting the filling and fixing agent 4, where 8 is a supply section, 9 is a mixing section, and 10 is a piston section. In the supply unit 8, the columnar body 1 formed in a columnar shape
A pair of cylinders having a predetermined cross-sectional area ratio in the axial direction
12, 13 are provided, a protrusion 14 is provided at the tip of the columnar body 11, and a connecting portion 15 is further provided at the tip thereof.
A ridge 16 is provided on the outer periphery of the. Also, the cylinders 12, 13
Supply paths 17 and 18 are provided from the bottom of the connection part 15 to the tip of the connection part 15, and the partition walls of the supply paths 17 and 18 are extended from the tip of the connection part 15 to project the partition part 19. The mixing section 9 has a main body section 20 formed of a tapered tubular body, and a recess 21 is provided on the inner periphery of the root portion of the main section 20. The mixing section 9 is connected to the connecting section 15 by fitting the projection 16 and the recess 21 together. Removably connect to. Inside the main body 20, left twisted plates 22 and right twisted plates 23, which are twisted to the left or right by 180 degrees between both ends, are arranged alternately and axially with a phase difference of 90 degrees.

Further, in the piston portion 10, a pair of pistons 25 and 26 are provided so as to project from a plate-shaped handle portion 24, and the cylinders 12 and 1 are provided at the tips of the pistons 25 and 26.
3 are provided with ridges 27 and 28 that movably fit together.

In the injection apparatus having the above-mentioned structure, first, the main agent is put in the large diameter cylinder 13, and the hardening agent is put in the small diameter cylinder 12. In this case, the cross-sectional area ratio of the cylinders 12 and 13 is 1: 2. Then, the pistons 25 and 26 are fitted into the cylinders 12 and 13, and the operator presses the handle portion 24 to move the pistons 25 and 26 into the cylinder 1.
Move into 2 and 13. As a result, the main agent and the curing agent are extruded into the mixing section 9 through the supply paths 18 and 17 at a ratio of 2: 1. That is, the main agent and the curing agent are divided into half amounts by the first left twist plate 22 from the state of being partitioned by the partition wall portion 19, flowed in the spiral direction and mixed, and thereafter, this operation is repeated and the tip of the mixing portion 9 is repeated. To fill the hole 3a of the component 3 through the injection port 2c.

In the above-described embodiment, the insert element body 1 connected to the tip of the guide rod 2 is inserted into the hole 3a of the structure 3, and the space in the hole 3a is filled with the filling fixing agent 4 and solidified. Since the insert element body 1 is embedded in the structure 3 by removing 2 and the new insert element body 1 is embedded in the existing structure 3, various members can be attached. Further, since the insert element body 1 is fixed only by the filling fixing agent 4, it is possible to reduce the cost and the weight, and the epoxy fixing agent 4 is used as the filling fixing agent 4, which is stronger than concrete. Is high and the reliability of mounting strength is high.

Further, the above-mentioned adhesive has a low viscosity of about 10,000 cP or less at 25 ° C. and a thixotropic property of TI of 3.5 or less. The adhesiveness is improved and the fluidity of the adhesive is improved so that there is no portion where the adhesive does not reach in the hole 3a, and no nest is formed.

Further, since the adhesive is hardened even when the inside of the hole 3a of the component 3 is in a wet state and has a predetermined adhesive strength, there is no fear that the filling fixing agent 4 will come out of the hole 3a. Further, since the adhesive cures at about 5 ° C. or higher and has a mechanical strength of about 80% or more of the normal value after 16 to 24 hours, it has a predetermined adhesive strength even when the constituent 3 is in a cold region. Is obtained.

Further, as a concrete adhesive, the main component is a bisphenol A type epoxy resin as a base, a reactive diluent and a thixotropic agent, highly dispersed silicon dioxide, are mixed, and a curing agent is an amine-based adhesive for wet surface adhesion. It is a blend of metaxylylenediamine modified aliphatic amine to give low temperature fast curing property to resin and highly dispersed silicon dioxide which is a thixotropic agent. It is possible to obtain a filled fixing agent that has good adhesion with and has excellent low-temperature curability.

When injecting the adhesive, the main agent and the curing agent are stored in the cylinders 13 and 12 provided on the columnar body 11,
By pushing the pistons 26 and 25 fitted in the cylinders 13 and 12, the main component and the curing agent are extruded and mixed into the mixing section 9 which is detachably attached to the columnar body 11, and the mixture is formed from the mixing section 9 through the injection port 2c. It is designed to be injected into the hole of the object 3 so that the injection work can be performed easily. Further, if only the mixing portion 9 in which the reaction between the main agent and the curing agent has occurred is replaced, the main agent and the curing agent remaining in the cylinders 12 and 13 can be used.

Although an example of a screw hole is shown as the fixing hole 1a, a fitting hole may be used. Further, although the bolt is shown as the fixture 5, it may be one without a screw portion, in which case the fixture 5 is fitted in the fitting hole. The connecting portion 2a of the guide rod 2 may also be rod-shaped outside the screw portion.
The shape of the insert element body 1 is set according to application conditions such as a barrel shape, a spherical shape, a conical shape, a disk shape, or a polygonal shape. Further, since the insert element body 1 is embedded in the hole 3a of the component 3 through the filling fixing agent 4, corrosion does not occur even if it is not ceramics, and it may be formed of metal or resin. An insert device is obtained. Furthermore, the composition 3 does not necessarily have to be a concrete structure,
In addition to concrete structures such as buildings, highways, bridge girders, underground structures and telephone poles, stone structures such as quays and stone walls, and other structures made of various building materials may be used. The insert tool 1 may be installed on any of the floor surface, the lower surface, the side wall, the ceiling surface, and the like.

[0029]

As described above, according to the first and second aspects of the present invention, the insert element body is embedded in the hole provided in the structure with the filling fixing agent, and the insertion element body is inserted into the filling fixing agent from the surface thereof. Inserting holes up to the fixing hole of the insert element are provided, and the fixture inserted through this inserting hole is connected to the fixing hole of the insert element body, and the insert element body is buried by making a new hole in the existing composition. It is possible to attach various members and obtain an anticorrosion type insert device.
In addition, a low-viscosity, thixotropic adhesive is used as the filling and fixing agent, which facilitates the work of injecting the filling and fixing agent into the holes of the composition, and the filling and fixing agent to every corner of the holes of the composition. The so-called nest does not occur.

According to the third aspect , an adhesive having a predetermined adhesive strength is used as the filling and fixing agent even when the hole of the component is in a wet state, and the filling and fixing agent escapes from the hole of the component. There is no such thing.

According to claim 4 , about 5 as a filling and fixing agent.
Cured at ℃ or above, and after 16-24 hours about 80% of normal value
Since the adhesive having the above mechanical strength is used, sufficient adhesive strength can be obtained even when the constituent is in a cold region.

According to the fifth aspect of the present invention, a bisphenol A type epoxy resin is used as a filling and fixing agent, a reactive diluent and a thixotropic agent are mixed as a main agent, and a wet surface-adhering amine resin is used as a base to obtain a low moisture fast curing property. Uses an adhesive that mixes a modified aliphatic amine for holding and a curing agent mixed with a thixotropic agent, has low viscosity and thixotropy, has good adhesion to the wet surface and is excellent in low temperature curability. A filled fixing agent can be obtained, and the above effects can be obtained.

According to the sixth aspect , the filling fixing agent is injected into the holes of the components by using a special injection device, so that the injection work can be simplified.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an anticorrosive insert device according to an embodiment of the present invention.

FIG. 2 is an explanatory view of the method for manufacturing the anticorrosive insert device according to the embodiment of the present invention.

FIG. 3 is a vertical front view of the injection device.

[Explanation of symbols]

1 ... Insert tool 1a ... fixing hole 3 ... Composition 3a ... hole 4 ... Fixing agent 4a ... insertion hole 5 ... Fixing device 5a ... connecting part 6 ... Fixed member 9 ... Mixing section 11 ... Columnar body 12, 13 ... Cylinder 25, 26 ... Piston

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-217429 (JP, A) T. Mita, MARUZEN macromolecule dictionary, Japan, Maruzen Co., Ltd., September 20, 1994, 120 Hiroshi Kakiuchi, Shin Epoxy resin, Japan, Shokodo Co., Ltd., May 30, 1988, First edition 3rd edition, 264-265, 531-544, 555-567 (58) Fields investigated (Int.Cl. ⁷ , DB name) E04B 1/41 503

Claims (6)

(57) [Claims] 1. An insert element body having fixing holes, which is embedded in a hole provided in a structure through a filling fixing agent, and an insertion hole formed in the filling fixing agent from its surface to the fixing hole. And a fixing member which is inserted into the insertion hole and is connected to the fixing hole, and a room temperature curing type adhesive composed of a main agent and a curing agent is used as a filling fixing agent.
An anticorrosive insert device having a low viscosity of about 10,000 cP or less and thixotropic index of thixotropy index of about 3.5 or less. 2. A cable having a fixing hole to which a fixing tool is coupled.
Insert the tip of the guide rod into the fixing hole of the insert element body,
Insert the insert element body into the hole where this guide rod is provided in the structure.
Insert while making it the tip and engaging around the hole of the component.
Fill, fill the space in the hole of the component with the filling fixative, and fill
After solidifying the fixative, remove the guide rod and insert it into the filled fixative.
From the surface of the filling fixative while embedding the sart element
Insertion hole of the fixture is formed up to the fixing hole of the insert element body
In addition, it is a room temperature hardener that consists of a main agent and a curing agent as a filling and fixing agent
The adhesive used is a type of adhesive.
Low viscosity below cP and thixotropic index
Is characterized by having thixotropy of about 3.5 or less.
Method for embedding anticorrosion insert equipment. 3. An insert element body having a fixing hole, which is embedded in a hole provided in a structure via a filling fixing agent, and an insertion hole formed in the filling fixing agent from its surface to the fixing hole. And a fixing tool that is inserted into the insertion hole and is coupled to the fixing hole, and uses a room temperature curing type adhesive composed of a main agent and a curing agent as a filling fixing agent. An anticorrosive insert device characterized by being hardened even in a wet state and having a predetermined adhesive strength. 4. An insert element body having a fixing hole, which is embedded in a hole provided in a structure via a filling fixing agent, and an insertion hole formed in the filling fixing agent from its surface to the fixing hole. And a fixing tool which is inserted through the insertion hole and is coupled to the fixing hole, and a room temperature curing type adhesive composed of a main agent and a curing agent is used as a filling fixing agent.
An anticorrosive insert device which is cured by the above and has a mechanical strength of about 80% or more of a normal value in 16 to 24 hours. 5. An insert element body having a fixing hole, which is embedded in a hole provided in a structure via a filling fixing agent, and an insertion hole formed in the filling fixing agent from its surface to the fixing hole. And a fixing tool which is inserted through the insertion hole and is connected to the fixing hole, and a room temperature curing type adhesive consisting of a main agent and a curing agent is used as a filling fixing agent, and the main agent is based on a bisphenol A type epoxy resin. About 5 to 1 reactive diluent
It is 0% blended, and about 2-4% of highly dispersed silicon dioxide for thixotropic properties is blended. The curing agent is based on the amine resin for wet surface adhesion and has a low temperature fast curing function. The anticorrosive insert device characterized in that it contains about 2 to 4% of highly dispersed silicon dioxide, which is a thixotropic agent, in combination with the modified aliphatic amine. 6. A hole for fixing is provided, which is filled in the hole provided in the component.
Inserts embedded by filling with a fixing agent are required.
Install from the surface to the fixing hole on the body and the filling fixing agent.
The through hole and the fixing hole that is inserted through this through hole.
Ri Do from the fixture to be coupled to a base resin as a filler fixative
Anticorrosion using a room temperature curing type adhesive consisting of a curing agent
In the insert device, it is provided on the columnar body and
And two cylinders that contain the curing agent and the columnar body
Connected to each cylinder and pushed out by a piston from each cylinder
The main component and the curing agent are mixed and the composition is applied from the tip.
And a tubular mixing section for injecting into the hole of
Filling fixative injection device for anticorrosion inserts.