JP4143554B2 - Anchor anchor capsule - Google Patents

Description

  The present invention relates to an anchor fixing capsule used for a post-installed anchor.

  Normally, when attaching a post-construction anchor to a structure such as reinforced concrete, the anchor muscle is struck into an anchor hole drilled in the attachment site. At that time, the anchor muscle is fixed using an adhesive sealed in a capsule. There are things to do.

For example, as in Patent Document 1, for example, a liquid main agent is accommodated in a glass container body, and a container with a cap with a hook formed by enclosing a powdery curing agent in a plastic film or coating film. It is known that a capsule whose opening is sealed can be bonded by simply driving it with a hammer or the like without rotating the anchor anchor. In this case, there is an advantage that it is inexpensive because it has a simple configuration.
JP-A 63-142200

  In the above prior art, there is a gap between the anchor hole and the capsule when the capsule is inserted into the anchor hole. Therefore, when the anchor muscle is driven with a hammer or the like, the anchor hole is removed from the container crushed by the driving force. There was a possibility that the liquid main agent diffused inside would be scattered outside through the gap.

  In addition, since the cap into which the anchor muscle is driven is also crushed almost simultaneously with the container, the liquid main agent scatters to the outside through the crushed cap soon after the main agent and the curing agent are sufficiently mixed. There was a fear.

  Therefore, there is a possibility that the anchor fixing strength after curing may be insufficient, and it is normal to install with a shampoo-hat-like cover that is a separate part from the capsule, so this cover becomes a hindrance and post-installation There was a problem that the workability of the anchor deteriorated.

  Also, when considering the ease of filling into the container, when using the one with a low viscosity of the main agent, only the downward work can be performed to prevent the main agent from flowing out to the outside. There was also a problem that it was difficult.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an anchor fixing capsule having a simple configuration and excellent workability.

  In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that the main agent is accommodated in a bottomed container that can be crushed by the anchor muscle being driven while being inserted into the anchor hole, and the opening of the container is opened. A capsule for anchor fixation in which a portion is sealed with a cap filled with a curing agent, the cap receiving a cap body with a hook that can be fitted into the opening of the container, and a driving force of the anchor A lid that can be buried along the inner wall of the cap body, and a strength higher than the lid to push the hardener out of the lid and mix it with the main agent by preferentially breaking when the lid is buried in the cap body And a bottom portion having a lowered height.

  The invention according to claim 2 is a cap in which the main agent is accommodated in a bottomed container that can be crushed by the anchor muscle being driven in the state of being inserted into the anchor hole, and the opening of the container is sealed with a curing agent. An anchor fixing capsule sealed with a cap body having a portion that is fitted on the outside of the opening of the container, and an inner wall of the cap body that receives a driving force of the anchor. An embeddable lid part and a bottom part having a lower strength than the lid part to extrude the curing agent from the lid part and to be mixed with the main agent by preferentially breaking when the lid part is buried in the cap body. It is characterized by this.

As in the invention described in claim 3, it is preferable that a non-penetrating cut is formed in the bottom portion.

As in the invention described in claim 4, it is preferable that the cut is formed in a radial shape from the center of the bottom toward the periphery.

  According to the first and second aspects of the present invention, basically, the opening of the bottomed container containing the main agent can be manufactured at low cost with a simple configuration in which the opening is sealed with a cap filled with a curing agent. While maintaining the maximum merit, the following exceptional effects can be achieved in the construction.

  That is, in a state where the capsule container is inserted into the anchor hole, the gap between the anchor hole and the container is closed by the collar part of the cap body (or a part fitted outside the opening of the container). And when the collar part of the cap body or the lid part of the cap is buried along the inner wall of the cap body under the driving force of the anchor muscle, the bottom part having a lower strength than the lid part is preferentially torn. From there, the curing agent is extruded relatively slowly and mixed with the main agent (at the same time, the main agent slowly enters the cap body, where the main agent and the curing agent are also mixed). As a result of efficient mixing, a predetermined anchor bond strength is obtained after the curing.

  During the extrusion of the curing agent, the gap between the cap body and the anchor bar is closed by the cap lid, and the remaining part of the bottom of the cap that has been crushed around the anchor bar is sealed after the extrusion of the curing agent. Since the gap is almost closed, the main agent is not scattered outside through the gap.

  Therefore, it is no longer necessary to carry out the cover for preventing scattering, and the workability of the post-construction anchor is greatly improved. Moreover, even when using a low viscosity of the main agent in consideration of the ease of filling into the container, the main agent is prevented from flowing out to the outside, so that only the downward operation can be performed. And work upwards easily.

According to invention of Claim 3, since the non-penetrating cut | interruption is formed in the said bottom part, a bottom part is torn preferentially and a hardening | curing agent is slowly extruded into a container from there, and the hardening | curing agent is a main ingredient. Are efficiently mixed.

According to the invention described in claim 4, since the cut is formed radially from the center of the bottom toward the periphery, even if the bottom is broken, it is not fully opened, and external scattering due to the backflow of the main agent into the cap. Is prevented.

  1A and 1B are diagrams showing an overall configuration of an anchor fixing capsule according to an embodiment of the present invention, in which FIG. 1A is a longitudinal sectional view, and FIG. 1B is a plan view viewed from the direction A in FIG. . FIG. 2 is an explanatory view showing an example of the construction procedure. In both figures, the aspect ratio and the gap portion of the anchor fixing capsule are exaggerated for convenience of explanation, but in actuality, those having a vertically long shape are generally used.

  As shown in FIG. 1 and FIG. 2, this anchor fixing capsule 1 has a cylindrical container 2 containing a main agent 4 as a main part, and an opening of the container 2 that can be sealed, and a curing agent in the inside. And a cap 3 enclosing 5.

  The container 2 is a bottomed cylindrical container made of glass, for example, and has several types of outer diameters and lengths corresponding to the anchor bars 6 to be driven. Further, the thickness of the container 2 is easily crushed by the driving force of the anchor muscle 6, but is set to a thickness that does not crush due to an impact during transportation. Here, as the anchor bar 6, an anchor bolt cut into a flat tip or a deformed steel material having an uneven peripheral surface is used.

  The cap 3 is a bottomed cylindrical container made of, for example, synthetic resin, and the cap body 31 has a size that can be fitted inside the container 2 from the opening of the container 2 to a predetermined depth. This predetermined depth is preset according to the required amount of the curing agent 5 with respect to the main agent 4. The cap body 31 has an upper end opened at the time of molding, and a flange 30 is formed around the cap body 31. The collar portion 30 is wide enough to close the gap between the anchor hole 71 and the container 2 and has a strength sufficient to support the cap body 31 when the anchor muscle 6 described later is driven. . The flange 30 is appropriately cut so that it can be easily removed after the anchor construction.

  In addition, a lid portion 32 separate from the cap body 31 is disposed in the opening on the upper end side of the cap body 31, and this lid portion 32 is also made of, for example, a synthetic resin, and caps when the anchor bars 6 are driven. The main body 31 can be buried while maintaining its posture (in this embodiment, a horizontal posture) from the opening on the upper end side toward the lower end side. Therefore, the lid 32 has a circular cross section and has a thickness that does not incline with respect to the inside of the cap body 31 when the anchor muscle 6 is driven, but a guide portion for maintaining a more stable posture (see FIG. (Not shown) may be provided.

  Further, in order to prevent the cover portion 32 from being buried in the cap body 31 before the anchor muscle 6 is driven, the collar portion 30 is provided with a step having a slightly larger diameter than the inner wall of the cap body 31, and the cover portion 32 is provided there. Is inserted. When the anchor muscle 6 is driven, one or both of the lid portion 32 and the cap body 31 are slightly deformed, and the lid portion 32 can be immersed in the inner wall of the cap body 31 from the stepped portion. However, instead of the flange portion 30 having a step-down structure, a tapered surface may be provided there.

Further, the lower end side of the cap main body 31 has a bottom, and as shown in FIG. 1B, a shallow non-penetrating cut 34 is formed radially from the center to the periphery of the bottom 33. Here, the cuts 34 are exemplified by a total of four in the vertical and horizontal oblique directions, but the specific cross-sectional shape (for example, V-groove shape), number, width, depth, etc. of the cuts 34 are the crushing strength of the bottom 34. Is set to be lower than the crushing strength of the lid portion 32 and the cap body 31.

As a result, when the driving force of the anchor muscle 6 acts on the lid portion 32, the bottom portion 33 is crushed in preference to the lid portion 32 and the cap body 31 due to the partial pressure. However, at the bottom 33 of the front crushing, the curing agent 5 and described later aggregate is in a state in which buried it enters the above cut 34, since the bottom 33 is less likely to be crushed, the cut 34 FIGS. 1 (a) It is preferable to be formed on the lower surface of the inner bottom portion 33.

  The curable resin used for the main agent 4, that is, the fixing agent of the anchor fixing capsule 1 is not particularly limited, and conventionally known curable resins such as epoxy acrylate (vinyl ester resin), unsaturated polyester, polyester acrylate, urethane A mixture of a radical polymerizable oligomer such as acrylate and a radical polymerizable monomer can be used.

  Epoxy acrylate is a reaction product of an epoxy resin and an unsaturated monobasic acid such as (meth) acrylic acid, or an epoxy group-containing monomer such as glycidyl (meth) acrylate and a polyhydric phenol such as bisphenol A. It is a reactant.

  The unsaturated polyester comprises a polybasic acid component essentially comprising an unsaturated polybasic acid [(anhydrous) maleic acid, fumaric acid, itaconic acid], and a polyhydric alcohol component comprising a polyhydric alcohol and / or an epoxy compound. Is an oligomer obtained by esterification reaction.

  Polyester acrylate reacts unsaturated polyester or saturated polyester carboxyl group with epoxy group-containing monomer such as glycidyl (meth) acrylate, or reacts unsaturated monobasic acid with unsaturated polyester or saturated polyester hydroxyl group It has been made.

  Urethane acrylate is obtained by further reacting a hydroxyl group-containing monomer with a reaction product of polyisocyanate and polyhydric phenols.

  These epoxy acrylates, unsaturated polyesters, polyester acrylates and urethane acrylates are easily available because various grades are commercially available.

  The radical polymerizable monomer contained in the curable resin has a role of adjusting the viscosity as a fixing agent and a role of exerting a high fixing force by contributing to a curing reaction.

  Specifically, aromatic monomers such as styrene, vinyl toluene and divinylbenzene; vinyl acetate; methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, (di) ethylene glycol di (meth) acrylate , Propylene glycol di (meth) acrylate, trimethylolpropane di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate and other (meth) acrylates Etc., and can be used alone or in admixture of two or more.

  The ratio of the curable resin and the radical polymerizable monomer in the resin composition is preferably 20 to 80% by mass when the total of both is 100% by mass.

  In the case of a capsule type as in this embodiment, the viscosity as a curable resin in which only an oligomer and a monomer are mixed is preferably 2500 mPa · s or less. When the viscosity is higher than 2500 mPa · s, the fluidity capable of spreading the curable resin into the perforations after crushing the capsule is insufficient. A more preferable viscosity is 500 to 1800 mPa · s. The viscosity is a value measured with a B-type viscometer at 25 ° C.

  Various additives can be blended with the curable resin as necessary. For example, curing accelerators such as dimethylaniline, diethylaniline, cobalt naphthenate, amines and toluidines; quinones such as hydroquinone; polymerization inhibitors such as di-t-butyl-p-cresol, phenothiazine and N-oxyl compounds Quartz sand, silica sand, talc, calcium carbonate, aluminum hydroxide, barium sulfate, fillers such as polymer balloons, glass balloons and silica balloons; thixotropic agents such as finely divided silica and bentonite; coloring pigments; ultraviolet absorbers; Examples include activators.

  In addition, 0.1-1.0 mass part of a hardening accelerator is preferable with respect to 100 mass parts of mixture (henceforth a resin component) of an oligomer and a monomer. Moreover, 0.3-7 mass parts is preferable with respect to 100 mass parts of resin components, and, as for the thixotropic agent (thixotropic property imparting agent), More preferably, it is 1-3 mass parts.

  In addition to the filler, the curable resin is preferably blended with crushed natural stone such as quartz, magnesia linker, glass, ceramic, plastic, and the like in addition to the filler. It is effective in preventing the dripping phenomenon that becomes a problem when construction is performed facing up. In this case, the aggregate is desirably added in an amount of 100 to 500 parts by mass with respect to 100 parts by mass of the resin component. The size of the aggregate is recommended to be about 0.5 to 5 mm. The capsule container itself also acts as an aggregate after crushing. The aggregate (including the container) is preferably adjusted to 50 to 90% by mass, and preferably 70 to 85% by mass, based on the total mass of the capsule after enclosing the fixing agent and the curing agent. More preferred.

  As the curing agent 5, organic peroxides such as benzoyl peroxide (BPO), dicumyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide, lauryl peroxide, t-butyl peroxide, and the like can be used. This curing agent is preferably 1 to 20 parts by mass (more preferably 3 to 10 parts by mass) with respect to 100 parts by mass of the resin component. Moreover, you may use in the form which added inorganic fillers (aggregate), such as a thixotropic agent, a calcium sulfate, a calcium carbonate, to the hardening | curing agent 5. For example, when an inorganic filler such as calcium sulfate or calcium carbonate is added to BPO, the BPO content is preferably 10 to 60% by mass, and more preferably 25 to 40% by mass.

  The anchor post-construction can be performed as follows using the anchor fixing capsule 1 having the above-described configuration.

  First, an anchor hole 71 is drilled on the floor of the structure 7 such as reinforced concrete with a drill or the like. The inner diameter of the anchor hole 71 is slightly larger than the outer diameter of the anchor fixing capsule 1 (for example, when the capsule diameter is φ16, the hole diameter is about φ18). Then, after the anchor hole 71 is cleaned with a brush, an air blow, or the like, the anchor fixing capsule 1 is inserted and set to the back, and the state shown in FIG. In this set state, the collar portion 30 of the cap 3 covers the small gap between the anchor hole 71 and the container 2 of the anchor fixing capsule 1.

  After that, when the flat tip of the anchor bar 6 is applied to the lid part 32 of the cap 3 and the anchor bar 6 is driven with a hammer or the like (not shown), as shown in FIG. While maintaining the horizontal posture along the inner wall of 31, it is buried downward. Since the driving force at this time is applied to the container 2 through the collar part 30 of the cap 3, the container 2 is crushed and the main agent 4 is diffused into the anchor hole 71, but there is the collar part 30 of the cap 3, The main agent 4 is not scattered outside.

At the same time, the driving force is also applied to the bottom 33 through the curing agent 5 confined in the cap body 31, and the bottom 33 breaks from the cut 34. Then, the cut 34 opens radially from the center to the periphery (not fully open), and the curing agent 5 enters the anchor hole 71 from the open cut 34 relatively slowly, or from the anchor hole 71. The main agent 4 and the curing agent 5 are efficiently mixed by allowing both of the main agent 4 to enter the cap 3 relatively slowly.

Next, as shown in FIG. 2 (c), the lid 32 of the cap 3 passes through the bottom 33 and escapes from the cap body 31, so that the gap between the cap body 31 and the anchor muscle 6 is slightly opened. Even in this case, since the cut 34 is wrapped around the anchor muscle 6 and the gap is small, the flow resistance becomes very large even if the main agent 4 flows backward in the cap body 31. The main agent 4 is not scattered outside through the gap. The lid portion 32 that has escaped from the cap body 31 comes into contact with the anchor hole 71 and is crushed by the anchor muscle 6 to become an aggregate and become a fixing component.

  If the main agent 4 and the curing agent 5 are mixed and left for a predetermined curing period, a predetermined anchor fixing strength can be obtained. If necessary, the collar portion 32 of the cap 3 can be broken from the cut and removed.

  As described above, according to the anchor fixing capsule 1 of the present embodiment, basically, the opening of the bottomed container 2 containing the main agent 4 is simply sealed with the cap 3 in which the curing agent 5 is sealed. In addition to being able to be manufactured at a low cost with this simple configuration, the following exceptional effects can be achieved in the construction.

  In other words, in a state where the anchor fixing capsule 1 is inserted into the anchor hole, the gap between the anchor hole 7 and the container 2 is closed by the flange portion 30 of the cap body 31. When the lid portion 32 of the cap 3 receives the driving force of the anchor muscle 6 and is buried along the inner wall of the cap body 31, the bottom portion 33 having a lower strength than the lid portion 32 is preferentially broken. From there, the curing agent 5 is extruded relatively slowly and mixed with the main agent 4 (at the same time, the main agent 4 slowly enters the cap body 31 where the main agent 4 and the curing agent 5 are also mixed), so that the curing is performed. The agent 5 and the main agent 4 are efficiently mixed, and a predetermined anchor fixing strength is obtained after the curing.

  During the extrusion of the curing agent 5, the gap between the cap body 31 and the anchor muscle 6 is closed by the lid portion 32 of the cap 3, and the cap crushed around the anchor muscle 6 even after the curing agent 5 is extruded. Since the remaining portion of the bottom portion 33 of the three is put together in a seal shape and the gap is almost closed, the main agent 4 is not scattered outside through the gap.

  Therefore, it is no longer necessary to carry out the cover for preventing scattering, and the workability of the post-construction anchor is greatly improved. In addition, even when using a material having a low viscosity of the main agent 4 in consideration of the ease of filling into the container 2, the main agent 4 is prevented from flowing out to the outside so that only a downward operation can be performed. This makes it easier to work sideways or upward.

  By the way, the opening of the anchor hole 7 is often tapered at a corner. Therefore, in the anchor fixing capsule 1 of the above-described embodiment, the cap 3 having the collar 30 on the cap body 31 is used, but the collar 30 becomes large. In such a case, an anchor fixing capsule 1a according to a modification as shown in FIG. 3 can be used. Here, a portion 30a for fitting the cap body 31a of the cap 3a to the outside of the opening of the container 2 is provided, and the cap 3a is disposed outside the container 2 (upper side in the figure) (however, The cap 3a can also be arrange | positioned inside the container 2 like the said embodiment by devising a shape).

  Thereby, in a state where the anchor fixing capsule 1 a is inserted into the anchor hole 7, the gap between the anchor hole 7 and the container 2 can be closed by the portion 30 a of the cap body 31. Other portions (the lid portion 32a and the bottom portion 33a) have the same configuration as described above, and can achieve the effects as described above.

  In the above embodiment, the container 2 of the anchor fixing capsule 1 is, for example, a glass cylindrical container. However, the material of the container 2 is not limited thereto, and can be crushed when the anchor muscle 6 is driven. Any material may be used as long as it is made of, for example, ceramic or synthetic resin.

  Moreover, in the said embodiment, although the lower surface of the collar part 30 of the cap 3 is made to correspond with the upper surface of the opening part of the container 2, this collar part 30 may be formed so that the opening part of the container 2 may be surrounded ( Further, when the collar portion 30 is externally fitted to the container 2, the configuration is the same as that of the anchor fixing capsule 1a according to the modified example).

  Moreover, in the said embodiment, although the cover part 32 of the cap 3 was comprised with the synthetic resin similar to the cap main body 31, what solidified BOP with the gypsum etc. may be sufficient as it, for example. .

Moreover, in the said embodiment, although the cut 34 is provided in the bottom part 33 of the cap 3, the shape of this cut 34 may be a star shape. Further, instead of providing the cut line 34, the bottom 33 may be made thinner than the lid 32 to have a lower strength. In short, it is sufficient that the bottom 33 is crushed with priority over the lid 32.

  Moreover, although the downward construction was demonstrated in the said embodiment, the sideways or upward operation | work can also be performed using this capsule 1 for anchor fixation.

It is a figure which shows the whole structure of the capsule for anchor fixation which concerns on one Embodiment of this invention, Comprising: (a) is a longitudinal cross-sectional view, (b) is the top view seen from the A direction in (a). It is explanatory drawing which shows an example of the construction procedure of this anchor anchor capsule. It is a longitudinal cross-sectional view which shows the whole structure of the capsule for anchor fixation which concerns on a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Capsule for anchor fixation 2 Container 3 Cap 30 Gutter 31 Cap body 32 Lid 33 Bottom 34 Cut 4 Main agent 5 Hardener 6 Anchor muscle 7 Structure 71 Anchor hole

Claims (4)

An anchor fixing capsule in which the main agent is accommodated in a bottomed container that can be crushed by being anchored in an anchor hole and the opening of the container is sealed with a cap filled with a curing agent. Because
The cap has a hooked cap body that can be fitted into the opening of the container, a lid portion that can be embedded along the inner wall of the cap body by receiving the driving force of the anchor, and the lid portion is a cap body A capsule for anchor anchoring, comprising a bottom portion that has a strength lower than that of a lid portion so that the hardener is pushed out preferentially when it is buried in the inside and pushed out from there to be mixed with the main agent. An anchor fixing capsule in which the main agent is accommodated in a bottomed container that can be crushed by being anchored in an anchor hole and the opening of the container is sealed with a cap filled with a curing agent. Because
The cap has a cap body having a portion that is fitted outside the opening of the container, a lid that can be embedded along the inner wall of the cap body by receiving the driving force of the anchor, and the lid is a cap. A capsule for anchor anchoring, comprising: a bottom portion having a strength lower than that of a lid portion so as to push out a hardening agent from the base material when it is buried in the main body and to be mixed with the main agent. The capsule for anchor anchoring according to claim 1 or 2, wherein a non-penetrating cut is formed in the bottom. 4. The capsule for anchor anchoring according to claim 3, wherein the cut is formed in a radial pattern from the bottom center to the periphery.

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