JP2023038131A - Fixation material injection tool and fixation material injection method - Google Patents

Abstract

To fill a cement type fixation material at the depth side in a drilling hole of a structure evenly and with solidity and fix a steel bar by the cement type fixation material filled with solidity, with high intensity and reliably.SOLUTION: A fixation material injection tool 1 is used to inject a cement type fixation material FA generated by agitating mixture of a water hardening cement type material and water inside a cartridge, into a drilling hole of a structure, and it comprises a cartridge 2 with an injection cap 4 removably fixed at one end 31 of a cylindrical body 3, an injection hose 5 with a base end side attached to the injection cap 4, a push-in ring 6 with an outer diameter slightly smaller than the diameter of the drilling hole and engaged externally and fixed near the tip of the injection hose 5, and a disc-like extrusion member 7 contacting and sliding the inside of the cylindrical body 3 in an axial direction by pressing force by an injection gun 10 and pushing the cement type fixation material FA of the cartridge 2 out of the injection hose 5.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a fixing material injection tool and a fixing material injection method used for injecting a cement-based fixing material into a borehole of a concrete structure or the like.

Conventionally, when fixing reinforcing bars such as anchors and reinforcing bars for shear reinforcement in a hole formed in a concrete structure, a cement-based fixing material is injected into the hole with an injection gun, and then the reinforcing bar is inserted to harden the cement-based fixing material. There is a method of waiting for it to settle. In most cases, the cement-based fixing material to be injected into the hole is prepared by putting an appropriate amount of premixed cement and an appropriate amount of water in a cartridge attached to an injection gun, and pre-stirring the cartridge by shaking the cartridge by hand to mix the premixed cement and water. It is made by mixing and then directly stirring with a special stir bar.

However, the cartridge usually has a cylindrical shape with an inner diameter of about 30 mm and a narrow internal space, and an appropriate amount of premixed cement and an appropriate amount of water are stirred in this narrow space. Therefore, it is difficult to prepare a cement-based fixing material that is uniform and fluid as a whole, and the time required for stirring becomes long.

Therefore, as in Patent Document 1, fixer capsules filled with premixed cement in a water-permeable package made of a non-woven paper sheet are immersed in water to absorb a specified amount of water. A technique has been proposed in which aggregates of premixed cement are placed in a cartridge and the aggregates are agitated within the cartridge to obtain a cementitious fixer to be injected.

JP 2019-19022

By the way, in Patent Document 1, aggregates are stirred in a cartridge to obtain a cement-based fixing material. expensive. When air enters the cement-based fixing material excessively, air pools occur in the cement-based fixing material injected into the perforations, and there is a problem that the filling state of the cement-based fixing material in the perforations becomes uneven.

The present invention is proposed in view of the above-mentioned problems. It is an object of the present invention to provide a fixing material injection device and a fixing material injection method that enable fixing to an image.

The fixer injection device of the present invention is a fixer injection device used for injecting a cement-based fixer produced by agitating a mixture of a hydraulic cement-based material and water inside a cartridge into a hole in a structure. A device comprising: the cartridge having an injection cap detachably fixed to one axial end of a cylindrical body; the injection hose having a proximal end attached to the injection cap; is formed with a slightly smaller diameter, and is externally fitted and fixed near the tip of the injection hose; and a disk-shaped extruding member for extruding the cement-based fixing material from the injection hose.
According to this, when the fixing material is injected, the disk-shaped extruding member pushes the cement-based fixing material inside the cylinder, so that air can be sent out into the injection hose without being mixed. While securing the necessary deaeration performance on the back side of the drilling with a push-in ring with a slightly smaller outer diameter, the back side of the drilled hole is almost closed with the push-in ring, and the cement-based fixing material is applied to the back side of the drilled hole, including the upper part of the hole. can be evenly and densely filled, and it is possible to prevent occurrence of an unfilled portion of the cement-based fixing material on the inner side of the perforated hole. Therefore, the densely packed cement-based fixing material can reliably fix the reinforcing bars to the structure with high strength.

The fixing material injection device of the present invention is characterized in that the outer diameter of the pressing ring is 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation.
According to this method, the viscous cement-based fixing material is filled in the inner part of the drilled hole while ensuring the degassing performance by the difference between the diameter of the drilled hole and the outer diameter of the push-in ring. It is possible to reliably obtain the substantially occluding property on the inner side of the drilling required for the above, and more reliably and simultaneously realize both the degassing property and the substantially occluding property necessary for dense filling of the cement-based fixing material to the inner side of the drilling. be able to.

The fixing material injection device of the present invention is characterized in that the pushing ring is made of an elastically deformable material.
According to this, when the injection hose and the push ring are inserted into the hole of the structure, the push ring can be deformed when it hits the hole wall of the hole. It can be inserted smoothly into the back side.

In the fixing material injection device of the present invention, the outer peripheral surface of one end in the axial direction of the cylinder and the outer peripheral surface of the other end in the axial direction are formed to have the same diameter, and the injection cap is formed on the one end of the cylinder. It is characterized in that it is detachably fitted to the outside.
According to this, the cement-based fixing material in the cylindrical body can be completely pushed out by the disk-shaped extrusion member that contacts and slides in the cylindrical body in the axial direction, and the injection of the cement-based fixing material into the borehole is completed. After that, the injection cap is removed from one end of the cylinder, and the new cement-based fixing material FA is accommodated in the inner space surrounded by the cylinder and the disk-shaped extrusion member, and then the removed injection cap is put on the other end. , the cylinder is turned over, and in the next process, the disk-shaped extrusion member is pushed from one end side and the cement-based fixing material is discharged from the injection cap attached to the other end. It can be reused without the need for cleaning or disposal.

The method of injecting a fixing material of the present invention is a method of injecting a fixing material using the fixing material injection device of the present invention. A first step of dipping to create the mixture, removing the wrapping material and putting the mixture into the cartridge, and a second step of agitating the mixture inside the cartridge to produce the cementitious fixing material. and a third step of inserting the injection hose attached to the injection cap into the perforation, and pushing the disk-shaped extrusion member with an injection gun to contact and slide the inside of the cylindrical body, and the disk-shaped extrusion member and a fourth step of discharging the cement-based fixing material from the tip opening of the injection hose by extrusion, and injecting the cement-based fixing material into the hole behind the push ring.
According to this, when the fixing material is injected, the disk-shaped push-out member pushes the cement-based fixing material inside the cylindrical body, so that the cement-based fixing material can be sent out into the injection hose without being mixed with air. Furthermore, when a mixture of a water-curable cementitious material obtained by immersing a fixing agent capsule in water and water is put into a cartridge, a gap is generated. However, even in such a case, the cement-based fixing material is densely filled into the inner part of the drilled hole by using a push-in ring with an outer diameter slightly smaller than the diameter of the drilled hole in the structure. be able to. In addition, there is a concern that the cement-based fixing material may shorten the curing time when used in summer when the outside temperature and the base material temperature rise. It can be lowered to reduce the temperature of the entire mixture of hydraulically curable cementitious material and water, thereby extending the pot life of the cementitious fixer.

According to the anchoring material injection device or the anchoring material injection method of the present invention, the cement-based anchoring material is evenly and densely filled into the inner part of the drilled hole of the structure, and the cement-based anchoring material that is densely filled provides high strength reinforcement. can be fixed securely.

1 is an exploded perspective view of a fixing material injection device according to an embodiment of the present invention; FIG. (a) is a perspective view showing an example of an injection gun used for injecting a cement-based fixing material, and (b) is a perspective view showing a state in which the fixing material injection device of the embodiment is installed in the injection gun shown in FIG. figure. 4(a) to 4(c) are diagrams for explaining the process of removing the packaging material by immersing the fixer capsule in water and putting a mixture of the water-setting cement-based material and water into the cartridge. (a) and (b) are process explanatory diagrams explaining the process of obtaining a cement-based fixing material by stirring a mixture of a hydraulic cement-based material and water inside a cartridge; Process explanatory drawing explaining the process of moving to the injection|pouring cap side. 4(a) and 4(b) are process explanatory diagrams for explaining a process of injecting a cement-based fixing material into a hole of a concrete structure using the fixing material injection tool of the embodiment; FIG. (a), (b) is a process explanatory drawing explaining the process of inserting and fixing a reinforcing bar in the drilled hole of the concrete structure filled with the cement-based fixing material. 4(a) to 4(e) are process explanatory diagrams for explaining the process of reusing the fixing material injection device of the embodiment used for injection of the cement-based fixing material. FIG.

[Fixing Material Injection Tool and Fixing Material Injection Method of Embodiment]
The fixing material injection device 1 according to the embodiment of the present invention is used to perforate a concrete structure 100 with a cement-based fixing material FA produced by agitating a mixture M of a hydraulic cement-based material and water inside a cartridge 2 . A fixer injection device 1 used for injection into perforations in a structure such as 101, comprising a cartridge 2 and a bendable injection hose 5, as shown in FIGS. , a push ring 6 and a disk-shaped push member 7 .

The cartridge 2 is composed of a cylindrical body 3 and an injection cap 4 . The illustrated cylinder 3 has a cylindrical shape with the same inner diameter and the same outer diameter over the entire length. The surfaces are also formed with the same diameter. The cylindrical body 3 can be made of an appropriate material that can be used as the cartridge 2, but is preferably made of a transparent material such as a transparent resin that allows the internal state to be visually recognized.

The injection cap 4 is made of hard resin or the like, and can be detachably fixed to one end 31 of the cylinder 3 in the axial direction. It can be fixed detachably. The injection cap 4 in this embodiment has a fitting portion 41, and the fitting portion 41 is composed of an annular base plate 411 and an upright wall 412 that is bent at a substantially right angle from the outer peripheral edge of the base plate 411 and rises. The inner diameter of the standing wall 412 is the same as or slightly larger than the outer diameter of the cylindrical body 3 . The injection cap 4 is detachably externally fitted and fixed to one end 31 of the cylindrical body 3 by externally fitting the standing wall 412 of the fitting portion 41 to the cylindrical body 3. It is detachably externally fitted and fixed to the other end 32 of the cylindrical body 3 .

Further, the injection cap 4 is formed with a taper portion 42 that tapers from the inner peripheral edge of the annular substrate 411 so as to stand in the direction opposite to the direction in which the standing wall 412 rises. A cylindrical tubular portion 43 is formed. In the illustrated example, the proximal end of the injection hose 5 is inserted and fitted into the tubular portion 43 of the injection cap 4, and the proximal end of the injection hose 5 is attached. A marker 51 is attached in the middle of the injection hose 5 in the longitudinal direction for controlling the injection amount of the cement-based fixing material FA to be injected into the perforation 101 .

The push-in ring 6 is externally fitted and fixed near the tip of the injection hose 5. In the illustrated example, it is fitted externally near the tip of the injection hose 5, and fixing tapes 8 such as vinyl tape are provided on both sides of the fitting position. It is fixed so as to restrict the movement by winding it. The outer diameter of the pushing ring 6 is formed slightly smaller than the standard diameter of the bore 101, preferably the outer diameter of the pushing ring 6 is 0.8 mm to 1.0 mm smaller than the standard diameter of the bore 101. It should be formed 2 mm smaller.

As the material of the push-in ring 6, it is possible to use an appropriate material that does not allow the cement-based fixing material FA injected from the tip opening 52 of the injection hose 5 to the far side of the perforation 101 to leak to the front side. Preferably, when inserting the injection hose 5 and the push ring 6 into the hole 101, an elastically deformable material, such as a chloroprene rubber sponge, which deforms when it hits the hole wall of the hole 101 to enable smooth insertion. A closed-cell sponge or the like may be used.

The disk-shaped extruding member 7 is made of closed-cell rubber sponge or the like, and has a diameter slightly smaller than the inner diameter of the cylindrical body 3 . Specifically, it is desirable that the outer diameter of the disk-shaped extrusion member 7 is smaller than the inner diameter of the cylinder 3 by 0.8 mm to 1.2 mm. The disk-shaped extruding member 7 is inserted into the cylinder 3 with its outer peripheral surface aligned with the inner peripheral surface of the cylinder 3, and is pressed by the injection gun 10, more specifically by the piston 11 of the injection gun 10. When pressed, it contacts and slides in the axial direction inside the cylindrical body 3 .

The injection gun 10 shown in FIG. 2 is electrically driven, and when a lever 13 is pulled, a piston 11 made of metal or the like provided at the tip of a piston rod 12 advances. Then, the cartridge 2 filled with the cement-based fixing material FA is installed in the holding portion 14 of the injection gun 10, and the disk-shaped push-out member 7 of the fixing material injection tool 1 is pushed toward the injection cap 4 side by advancing the piston 11. , the cement-based fixing material FA inside the cartridge 2 is extruded into the injection hose 5 , and the cement-based fixing material FA is discharged from the tip opening 52 of the injection hose 5 . The injection gun used for pressing and pushing the disk-shaped extrusion member 7 may be of a manual type.

Next, an example of a fixing material injection method using the fixing material injection device 1 of this embodiment will be described. First, as shown in FIG. 3, the fixing material capsules 21 in which the water-permeable packaging material 22 is filled with a water-setting cementitious material such as premixed cement at a prescribed filling rate are immersed in water W for a prescribed period of time. to create a mixture M. The powdery cementitious material absorbs the water W necessary for hardening to form a mixture M that is agglomerated so as to retain its shape. After removing it, it is taken out and placed in the cartridge 2. At this time, first, the disk-shaped extrusion member 7 is fitted to the other end 32 of the cylinder 3, and the mixture M is put into the cylinder 3 using the disk-shaped extrusion member 7 as a bottom cover. One or a plurality of mixtures M corresponding to the number of fixing material capsules 21 can be put into the cartridge 2 .

Then, as shown in FIG. 4(a), a stirring rod 23 having stirring blades 231 is inserted from one end 31 side of the cylindrical body 3, and the mixture M housed inside the cartridge 2 is stirred with the stirring rod 23. Mix well. The stirring rod 23 is connected to the rotary tool, pushed into the mixture M while being rotated, and pulled out while being rotated when the stirring blade 231 reaches the vicinity of the disk-shaped extrusion member 7. There is no need for excessive agitation. By this stirring, the particles of the mixture M that have aggregated are dispersed almost uniformly, and a paste-like cement-based fixing material FA having fluidity and viscosity is generated inside the cartridge 2. One end 31 is fitted with the injection cap 4 (see FIG. 4(b)). Next, the cartridge 2 with the injection cap 4 attached to the cylindrical body 3 is turned upside down, a piston 11 is inserted into the cylindrical body 3 from the other end 32 side by, for example, an injection gun 10, and the disk-shaped pushing member 7 is pushed into the piston. 11, the cement-based fixing material FA is pushed toward the injection cap 4 side, and the cement-based fixing material FA is arranged in advance near the injection cap 4 (see FIG. 4(c)).

Further, the proximal end of the injection hose 5 is attached to the tubular portion 43 of the injection cap 4 of the cartridge 2 containing the cement-based fixing material FA, and the disk-shaped extrusion member 7 is pushed from the other end portion 32 of the tubular body 3. An injection hose 5, which is inserted into the inside to configure a fixing material injection device 1, is attached to an injection cap 4 and has a push ring 6 around its tip, is inserted into a hole 101 of a concrete structure 100. The tip opening 52 of the hole 101 is located near the bottom of the hole (see FIG. 5(a)).

Next, the cartridge 2 filled with the cement-based fixing material FA is set in the injection gun 10 , the piston 11 is advanced by the injection gun 10 , and brought into contact with the disk-shaped push-out member 7 to push the disk-shaped push-out member 7 into the injection cap 4 . The cement-based fixing material FA inside the cartridge 2 is pushed out to the injection hose 5 by the disk-shaped push-out member 7 which is pushed to the side, slides in contact with the inside of the cylindrical body 3 and advances. At this time, the disk-shaped extruding member 7 can push the cement-based fixing material FA into the injection hose 5 without mixing air by pushing the cement-based fixing material FA inside the cylindrical body 3, and the extruded cement-based fixing material FA is pushed out into the injection hose 5. is discharged from the tip opening 52 of the hole 101 and injected into the hole 101 deeper than the pushing ring 6 . At this time, the air on the inner side of the perforation 101 is deaerated from the gap between the outer peripheral surface of the push ring 6 and the hole wall of the perforation 101, and the area surrounded by the hole wall of the perforation 101 and the front surface of the push ring 6 is filled with air. The cement-based fixing material FA is densely filled (see FIGS. 5(a) and 5(b)).

As the cement-based fixing material FA is densely filled into the perforation 101 , the push-in ring 6 and the injection hose 5 gradually retreat toward the mouth of the perforation 101 , and the marker 51 of the injection hose 5 moves toward the perforation 101 . When the mouth position is reached, the injection of the specified amount of the cement-based fixing material FA into the perforated hole 101 is completed. to remove the fixing material injection device 1 from the perforation 101 (see FIG. 5B). That is, a push-in ring 6 is fixed to the injection hose 5, and the push-in ring 6 pushes the cement-based fixing material FA. Since it is defined, the filling amount of the cement-based fixing material FA can be appropriately controlled by visually observing the marker 51 .

After that, as shown in FIG. 6, a reinforcing bar 24 such as an anchor or a reinforcing bar for shear reinforcement is placed in the hole 101 filled with a specified amount of the cement-based fixing material FA, and a marker 241 as a mark of the amount of protrusion or embedment is placed. is positioned at the mouth of the perforation 101, the cement-based fixing material FA protruding from the mouth of the perforation 101 is removed as necessary, and the reinforcing bar 24 is fixed to the perforation 101 after the cement-based fixing material FA hardens. be done.

In the fixing material injection device 1, the cylindrical body 3 has the same inner diameter and the same outer diameter at one end 31 and the other end 32, and has a cylindrical shape with the same inner diameter over the entire length. Therefore, by pushing out the cement-based fixing material FA through the disk-shaped pushing member 7, the entire cement-based fixing material FA in the cylindrical body 3 can be pushed out (see FIG. 7(a)). If the amount of cement-based fixing material FA injected into the perforations 101 does not reach the prescribed amount and all of the cement-based fixing material FA is extruded from the cylindrical body 3 (see FIG. 7B), Then, another cartridge 2 is constructed by replacing the injection cap 4 with the cylindrical body 3 in which the cement-based fixing material FA is prepared (see FIGS. 4(b) and 4(c)), and this another cartridge 2 is The injection gun 10 is set, and the fixing material injection filling operation into the perforations 101 is continued.

On the other hand, since the disk-shaped push-out member 7 has moved to one end 31 of the cylindrical body 3 from which the cement-based fixing material FA has been completely discharged, the disk-shaped push-out member 7 is again used as a bottom cover, and water is added for a predetermined time. A desired quantity of a mixture M of a hydraulic cementitious material and water immersed in the water is put into the cylindrical body 3 (see FIGS. 7(c) and (d)), and this is placed at the other end 32 (See FIG. 7(e)), and a new cement-based fixing material FA is generated in the inner space surrounded by the cylindrical body 3 and the disk-shaped extruding member 7 to prepare for a new injection work. .

Then, when using the cartridge 2 containing the newly produced cement-based fixing material FA, the injection cap 4 is fitted to the other end 32 side of the cylindrical body 3 to obtain the state shown in FIG. 4(c). Conversely, from one end 31, for example, the piston 11 of the injection gun 10 pushes the cement-based fixing material FA toward the injection cap 4 through the disk-shaped extrusion member 7. As shown in FIG. At this time, the outer diameter of the disk-shaped extruding member 7 is slightly smaller than the inner diameter of the cylindrical body 3, preferably 0.8 mm to 1.2 mm, so that the inside of the cylindrical body 3 is cement-based. Since the material FA moves smoothly, the cylindrical body 3 can be reused efficiently without washing or discarding it after each use.

According to this embodiment, when the fixing material is injected, the disk-shaped extrusion member 7 pushes the cement-based fixing material FA inside the cylindrical body 3 so that it can be sent out into the injection hose 5 without being mixed with air. While securing the necessary deaeration performance on the inner side of the drilling with the pressing ring 6 having an outer diameter slightly smaller than the diameter of the perforation 101 etc. The cement-based fixing material FA can be evenly and densely filled on the inner side of the drilled hole including the inner upper part, etc., and it is possible to prevent the occurrence of unfilled portions of the cement-based fixing material on the inner side of the drilled hole 101. . Therefore, the reinforcing bars 24 can be securely fixed to the concrete structure 100 or the like with high strength by the densely packed cement-based fixing material FA.

Furthermore, by forming the outer diameter of the push ring 6 to be 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation 101, the degassing performance of degassing the air on the inner side of the perforation is increased by the diameter of the perforation and the outer diameter of the push ring 6. It is possible to reliably obtain substantially occlusive properties on the back side of the drilling required for filling the back side of the drilling with the viscous cement-based fixing material FA while ensuring the difference between the diameter and the cement-based fixing material FA. It is possible to more reliably and simultaneously achieve both the degassing property and the substantially closing property required for solid filling to the inner side of the drilled hole.

In addition, by forming the push ring 6 with an elastically deformable material, when the injection hose 5 and the push ring 6 are inserted into the hole 101 or the like of the concrete structure 100, the hole wall of the hole 101 or the like is pushed. The ring 6 can be deformed, and this deformation allows the injection hose 5 and the pushing ring 6 to be smoothly inserted into the hole 101 or the like.

In addition, the outer peripheral surface of one end 31 and the other end 32 of the cylinder 3 in the axial direction are formed to have the same diameter, and the injection cap 4 is formed so that the one end 31 and the other end of the cylinder 3 By making it possible to detachably fit and fix to the portion 32, the cement-based fixing material FA in the cylindrical body 3 is left in the cylindrical body 3 by the disk-shaped extruding member 7 that slides in contact with the interior of the cylindrical body 3 in the axial direction. For example, after the injection of the cement-based fixing material FA into the perforation 101 is completed, the injection cap 4 is removed from one end 31 of the cylindrical body 3, and the cylindrical body 3 and the disk-shaped extrusion member 7 are removed. After the new cement-based fixing material FA is accommodated in the inner space surrounded by By pushing the disk-shaped extrusion member 7 from the part 31 side and ejecting the cement-based fixing material FA from the injection cap 4 attached to the other end part 32, it can be reused without washing or disposal.

Also, when the mixture M of the water-curable cementitious material obtained by immersing the fixing material capsule 21 in the water W and the water W is put into the cartridge 2, a gap is generated. However, even in such a case, the pressing ring 6, which has an outer diameter slightly smaller than the diameter of the drilled hole 101 of the concrete structure 100, is used to prevent the inside of the drilled hole. The side can be densely filled with cementitious anchoring material FA. In addition, when the cement-based fixing material FA is used in summer when the temperature of the outside air or the base material rises, there is a concern that the curing time may be shortened. By lowering the immersion temperature, the temperature of the entire mixture M of the hydraulic cementitious material and water W can be lowered, and the pot life of the cementitious fixing material FA can be extended.

[Scope of invention disclosed in this specification]
In addition to each invention and embodiment listed as an invention, the invention disclosed in this specification is specified by changing these partial contents to other contents disclosed in this specification within the applicable range, Alternatively, what is specified by adding other contents disclosed in this specification to these contents, or what is specified by deleting these partial contents to the extent that partial effects can be obtained and making them a broader concept contain. The invention disclosed in this specification also includes the following contents and modifications.

For example, in the above-described embodiment, the cement-based fixing material FA is obtained by immersing the fixing-material capsules 21 filled with a water-curable cement-based material in the water W as a mixture that is agitated inside the cartridge 2 to form the cement-based fixing material FA. Although the case where the mixture M is used has been described, a mixture that is stirred inside the cartridge to form a cementitious fixing material is suitable within the scope of the present invention. It is possible to use a mixture directly put into the cartridge 2, or a mixture obtained by directly putting a water-curable cementitious material filled in a water-soluble packaging material and water directly into the cartridge 2, or the like.

INDUSTRIAL APPLICABILITY The present invention can be used, for example, when injecting a cement-based anchor into a hole in a concrete structure, stone, brick, asphalt, or the like.

Reference Signs List 1 Fixing material injection device 2 Cartridge 3 Cylindrical body 31 One end 32 The other end 4 Injection cap 41 Fitting portion 411 Substrate 412 Upright wall 42 Tapered portion 43 Cylindrical portion 5 Injection hose 51 Marker 52 Tip opening 6 Push ring 7 Disk-shaped extrusion member 8 Fixing tape 10 Injection gun 11 Piston 12 Piston rod 13 Lever 14 Holding part 21 Fixing material capsule 22 Package Material 23... Stirring rod 231... Stirring blade 24... Reinforcing bar 241... Marker FA... Cement-based fixing material M... Mixture W... Water 100... Concrete structure 101... Perforation

Claims (5)

A fixer injection device used for injecting a cementitious fixer produced by stirring a mixture of a hydraulic cementitious material and water inside a cartridge into a hole in a structure,
the cartridge in which an injection cap is detachably fixed to one end in the axial direction of the cylinder;
an injection hose having a proximal end attached to the injection cap;
a push-in ring having an outer diameter slightly smaller than the diameter of the perforation and fixed by fitting around the tip of the injection hose;
a disc-shaped extrusion member that axially contacts and slides inside the cylindrical body when pressed by an injection gun and pushes out the cement-based fixing material inside the cartridge from the injection hose;
A fixing material injection device, comprising: 2. The fixing material injection device according to claim 1, wherein the outer diameter of said pressing ring is 0.8 mm to 1.2 mm smaller than the standard diameter of said perforation. 3. The fixing material injection device according to claim 1, wherein said pressing ring is made of an elastically deformable material. an outer peripheral surface of one end in the axial direction of the cylinder and an outer peripheral surface of the other end thereof are formed with the same diameter,
4. The fixing material injection device according to claim 1, wherein the injection cap is detachably fitted to one end of the cylindrical body. A fixing material injection method using the fixing material injection device according to any one of claims 1 to 4,
A first step of preparing the mixture by immersing in water a fixing material capsule in which a water-curable cementitious material is filled in a water-permeable packaging material, removing the packaging material, and putting the mixture into the cartridge. and,
a second step of agitating the mixture inside the cartridge to form the cementitious anchor;
a third step of inserting the injection hose attached to the injection cap into the bore;
The disk-shaped extrusion member is pushed by an injection gun to contact and slide inside the cylindrical body, the cement-based fixing material is discharged from the tip opening of the injection hose by extrusion of the disk-shaped extrusion member, and the perforation is pushed into the hole. a fourth step of injecting the cement-based fixing material into the back side of the ring;
A fixing material injection method, comprising:

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