Fixing agent injection method

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]

[0001] The present invention relates to a fixing material injection tool used for injecting a cement-based fixing material into a borehole in a concrete structure or the like. Using This relates to a fixing agent injection method. [Background technology]

[0002] Conventionally, when fixing reinforcing bars such as anchors or shear reinforcement bars in holes drilled in concrete structures, a cement-based fixing material is injected into the hole with an injection gun, then the reinforcing bars are inserted and allowed to harden before being fixed.The cement-based fixing material to be injected into the hole is often prepared by placing an appropriate amount of premixed cement and water in a cartridge attached to the injection gun, pre-stirring the cartridge by shaking it by hand or other means to mix the premixed cement and water, and then directly stirring the mixture with a special stirring rod.

[0003] However, cartridges are usually cylindrical with an inner diameter of about 30 mm, and the internal space is narrow, so it is necessary to mix the appropriate amount of premixed cement and water in this narrow space. This makes it difficult to create a uniform, fluid cement-based fixing material, and also increases the time required for mixing.

[0004] Therefore, as in Patent Document 1, a method has been proposed in which a fixing agent capsule containing premixed cement packed in a water-permeable package made of a nonwoven paper sheet is immersed in water to absorb a specified amount of water, the premixed cement aggregate that has absorbed the water is placed in a cartridge, and the aggregate is stirred inside the cartridge to obtain a cement-based fixing agent to be injected. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2019-19022 Summary of the Invention [Problem to be solved by the invention]

[0006] In Patent Document 1, the aggregate is stirred in a cartridge to obtain the cement-based fixing material, but there is a high possibility that air will be entrained during the stirring process, resulting in excessive air being entrained in the cement-based fixing material. If excessive air is entrained in the cement-based fixing material, air pockets will form in the cement-based fixing material injected into the borehole, causing a problem of uneven filling of the cement-based fixing material in the borehole.

[0007] The present invention has been proposed in view of the above-mentioned problems, and provides an anchoring material injection tool that can evenly and densely fill the deepest part of a drilled hole in a structure with a cement-based anchoring material, thereby enabling the reinforcing bars to be securely fixed with high strength by the densely filled cement-based anchoring material. Using The object is to provide a fixing agent injection method. [Means for solving the problem]

[0008] The fixing agent injection device of the present invention is an fixing agent injection device used to inject a cementitious fixing agent produced by stirring a mixture of water-hardening cementitious material and water inside a cartridge into a perforation in a structure, and is characterized by comprising: the cartridge having an injection cap detachably fixed to one axial end of a cylindrical body; an injection hose having a base end attached to the injection cap; a push-in ring having an outer diameter slightly smaller than the diameter of the perforation and externally fitted and fixed near the tip of the injection hose; and a disk-shaped extrusion member that slides axially inside the cylindrical body when pressed by an injection gun, and extrudes the cementitious fixing agent inside the cartridge from the injection hose. With this, during the fixing material injection work, the disc-shaped extrusion member pushes the cement-based fixing material inside the cylinder, allowing it to be delivered without mixing air into the injection hose. Furthermore, the pushing ring, which has an outer diameter slightly smaller than the diameter of the borehole in the structure, ensures the necessary deaeration at the back of the borehole while nearly sealing off the back side of the borehole, allowing the cement-based fixing material to be densely and evenly filled at the back of the borehole, including the upper part, and preventing the creation of unfilled areas at the back of the borehole. Therefore, the densely packed cement-based fixing material can reliably fix the rebar to the structure with high strength.

[0009] The fixing material injection tool of the present invention is characterized in that the outer diameter of the push-in ring is formed to be 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation. This ensures the deaeration ability to remove air from the deep end of the perforation by using the difference between the perforation diameter and the outer diameter of the push-in ring, while also ensuring the approximate sealing ability at the deep end of the perforation required to fill the viscous cement-based fixing material at the deep end of the perforation.This makes it possible to more reliably and simultaneously achieve both the deaeration ability and approximate sealing ability required to densely fill the cement-based fixing material at the deep end of the perforation.

[0010] The fixing agent injection tool of the present invention is characterized in that the pushing ring is formed of an elastically deformable material. This makes it possible to deform the push ring when it hits the wall of the hole when inserting the injection hose and push ring into a borehole in a structure, and this deformation allows the injection hose and push ring to be inserted smoothly into the back of the hole.

[0011] The fixing material injection device of the present invention is characterized in that the outer circumferential surface of one axial end of the cylindrical body and the outer circumferential surface of the other axial end are formed with the same diameter, and the injection cap is detachably fitted onto one end of the cylindrical body. Also, the fixing material injection device of the present invention is characterized in that the cylindrical body is cylindrical with the same inner diameter and outer diameter along its entire length, the outer circumferential surface of one axial end of the cylindrical body and the outer circumferential surface of the other axial end of the cylindrical body are formed with the same diameter, and the injection cap, which can be detachably fitted onto the other end of the cylindrical body, is detachably fitted onto one end of the cylindrical body. With this, the cement-based fixing material inside the cylinder can be pushed out without any waste by the disk-shaped extrusion member that slides in axial contact inside the cylinder. After the cement-based fixing material has been injected into the borehole, the injection cap is removed from one end of the cylinder, and new cement-based fixing material FA is placed in the internal space surrounded by the cylinder and the disk-shaped extrusion member. The removed injection cap is then attached to the other end, the cylinder is turned upside down, and in the next step, the disk-shaped extrusion member is pushed from one end to eject the cement-based fixing material from the injection cap attached to the other end, making it reusable without the need for cleaning or disposal.

[0012] The fixing agent injection method of the present invention is a fixing agent injection method using the fixing agent injection tool of the present invention, and is characterized by comprising the following steps: a first step of immersing a fixing agent capsule, in which a water-setting cementitious material is filled in a water-permeable packaging material, in water to prepare the mixture, removing the packaging material, and placing the mixture in the cartridge; a second step of stirring the mixture inside the cartridge to produce the cementitious fixing agent; a third step of inserting the injection hose attached to the injection cap into the perforation; and a fourth step of pushing the disc-shaped extrusion member with an injection gun to make it contact and slide inside the cylindrical body, extruding the disc-shaped extrusion member to eject the cementitious fixing agent from the tip opening of the injection hose, and injecting the cementitious fixing agent into the perforation behind the pushing ring. The fixing material injection method of the present invention is characterized in that the outer diameter of the push-in ring is formed 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation. The fixing material injection tool of the present invention is characterized in that the push-in ring is formed of an elastically deformable material. This allows the disc-shaped extrusion member to push the cementitious adhesive inside the cylinder during the adhesive injection process, ensuring that air is not mixed into the injection hose. Furthermore, when the mixture of hydraulic cementitious material and water obtained by immersing the adhesive capsule in water is poured into the cartridge, gaps form. Stirring to eliminate these gaps can result in air entrainment, resulting in excessive air being mixed into the cementitious adhesive. Even in such cases, a pushing ring with an outer diameter slightly smaller than the diameter of the drilled hole in the structure allows the cementitious adhesive to be densely packed deep into the drilled hole. Furthermore, while cementitious adhesives can have a problem with their curing time being shortened during summer use due to elevated ambient and base material temperatures, the process of immersing the adhesive capsule in water lowers the water immersion temperature, thereby lowering the temperature of the entire mixture of hydraulic cementitious material and water, thereby extending the usable life of the cementitious adhesive. [Effects of the Invention]

[0013] According to the fixing material injection device or fixing material injection method of the present invention, cement-based fixing material can be densely and evenly filled into the deep part of the borehole in a structure, and the densely filled cement-based fixing material can be used to reliably fix reinforcing bars with high strength. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is an exploded perspective view of an embodiment of a fixing material injection tool according to the present invention. [Figure 2] (a) is an oblique view showing an example of an injection gun used to inject cement-based fixing material, and (b) is an oblique explanatory view showing the state in which an embodiment of a fixing material injection device is installed on the injection gun of the same figure (a). [Figure 3] 10(a) to 10(c) are process diagrams illustrating the process of immersing a fixing agent capsule in water, removing the packaging, and then placing a mixture of water-hardening cementitious material and water into a cartridge. [Figure 4](a) and (b) are process diagrams illustrating the process of stirring a mixture of hydraulic cementitious material and water inside the cartridge to obtain a cementitious fixing material, and (c) is a process diagram illustrating the process of moving the cementitious fixing material to the injection cap side. [Figure 5] 10A and 10B are process explanatory diagrams illustrating a process of injecting a cement-based fixing material into a borehole in a concrete structure using an fixing material injection tool according to an embodiment. [Figure 6] (a) and (b) are process diagrams illustrating the process of inserting and fixing rebar into a drilled hole in a concrete structure filled with cement-based fixing material. [Figure 7] 10(a) to 10(e) are process explanatory diagrams illustrating a process for reusing a fixing material injection tool according to an embodiment used for injecting a cement-based fixing material. DETAILED DESCRIPTION OF THE INVENTION

[0015] [Fixing material injection device and fixing material injection method according to the embodiment] The fixing material injection tool 1 according to an embodiment of the present invention is an fixing material injection tool 1 used to inject a cementitious fixing material FA, which is produced by stirring a mixture M of a hydraulic cementitious material and water inside a cartridge 2, into a borehole in a structure such as borehole 101 in a concrete structure 100, and as shown in Figures 1, 2, 4 and 5, comprises the cartridge 2, a bendable injection hose 5, a push-in ring 6 and a disk-shaped extrusion member 7.

[0016] The cartridge 2 is composed of a cylindrical body 3 and an injection cap 4. The cylindrical body 3 in the illustrated example is cylindrical with the same inner diameter and the same outer diameter along its entire length, and the outer circumferential surface of one end 31 of the cylindrical body 3 in the axial direction and the outer circumferential surface of the other end 32 are also formed with the same diameter. The cylindrical body 3 can be formed from any appropriate material that can be used for the cartridge 2, but it is preferable to form it from a transparent material such as a transparent resin that allows the internal state to be visible.

[0017] Pouring cap 4 is formed of a hard resin or the like, and is removably fixed to one axial end 31 of cylindrical body 3, and is also removably fixed to the other axial end 32 of cylindrical body 3. Pouring cap 4 in this embodiment has a fitting portion 41, which is composed of an annular base plate 411 and an upright wall 412 that bends at a substantially right angle from the outer periphery of base plate 411 and stands upright, and the inner diameter of upright wall 412 is formed to be the same as or slightly larger than the outer diameter of cylindrical body 3. Pouring cap 4 is removably fitted and fixed to one end 31 of cylindrical body 3 by externally fitting upright wall 412 of fitting portion 41 onto cylindrical body 3, and is also removably fitted and fixed to the other end 32 of cylindrical body 3.

[0018] Furthermore, injection cap 4 is formed with tapered section 42 that tapers away from the inner peripheral edge of annular base plate 411 and rises in the opposite direction to the direction in which upstanding wall 412 rises, and a cylindrical tubular section 43 is formed at the tip side of tapered section 42. In the illustrated example, the base end of injection hose 5 is inserted and fitted into tubular section 43 of injection cap 4, and the base end of injection hose 5 is attached. A marker 51 is attached midway along the length of injection hose 5 to control the amount of cement-based anchoring material FA injected into borehole 101.

[0019] Push-in ring 6 is fitted onto and fixed in the vicinity of the tip of injection hose 5; in the illustrated example, it is fitted onto and fixed in the vicinity of the tip of injection hose 5, and is fixed in place by wrapping adhesive tape 8 such as vinyl tape around both sides of the fitted position to restrict movement. The outer diameter of push-in ring 6 is formed to be slightly smaller than the standard diameter of perforation 101, and preferably the outer diameter of push-in ring 6 is formed to be 0.8 mm to 1.2 mm smaller than the standard diameter of perforation 101.

[0020] The push-in ring 6 can be made of any suitable material that prevents the cement-based fixing material FA that is injected from the tip opening 52 of the injection hose 5 into the back side of the borehole 101 from leaking out toward the front side. Preferably, the push-in ring 6 is made of an elastically deformable material that deforms when it hits the wall of the borehole 101 when the injection hose 5 and push-in ring 6 are inserted into the borehole 101, allowing for smooth insertion, such as a closed-cell sponge such as chloroprene rubber sponge.

[0021] The disc-shaped extrusion member 7 is made of a material such as closed-cell rubber sponge, 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 disc-shaped extrusion member 7 is smaller than the inner diameter of the cylindrical body 3 by 0.8 mm to 1.2 mm. The disc-shaped extrusion member 7 is inserted into the cylindrical body 3 with its outer surface aligned with the inner surface of the cylindrical body 3, and is pressed by the injection gun 10, more specifically by the piston 11 of the injection gun 10, so that it makes sliding contact with the inside of the cylindrical body 3 in the axial direction.

[0022] The injection gun 10 in the example of Figure 2 is electrically operated, and when lever 13 is pulled, piston 11, made of metal or the like, attached to the tip of piston rod 12 moves forward. Cartridge 2 filled with cementitious fixing material FA is placed in holding portion 14 of injection gun 10, and when piston 11 moves forward to push disc-shaped pushing member 7 of fixing material injection tool 1 toward injection cap 4, the cementitious fixing material FA inside cartridge 2 is pushed into injection hose 5, and the cementitious fixing material FA is discharged from tip opening 52 of injection hose 5. The injection gun used to push and depress disc-shaped pushing member 7 may also be manual.

[0023] Next, an example of a method for injecting a fixing agent using the fixing agent injection tool 1 of this embodiment will be described. First, as shown in FIG. 3 , fixing agent capsules 21, each containing a water-setting cementitious material such as premixed cement packed in a permeable packaging material 22 at a specified filling rate, are immersed in water W for a specified time to prepare a mixture M. The powdered cementitious material absorbs the water W necessary for hardening, forming an agglomerated mixture M that maintains its shape. The shape-maintained mixture M is then removed by peeling off the packaging material 22 and placed in the cartridge 2. First, a disk-shaped extrusion member 7 is fitted to the other end 32 of the cylindrical body 3, and the mixture M is placed into the cylindrical body 3 using the disk-shaped extrusion member 7 as a bottom cover. The cartridge 2 can contain one or more mixtures M, corresponding to the number of fixing agent capsules 21.

[0024] Then, as shown in Figure 4(a), a stirring rod 23 with stirring blades 231 is inserted from one end 31 of the cylindrical body 3, and the mixture M contained inside the cartridge 2 is stirred with the stirring rod 23. The stirring rod 23 is connected to a rotating tool and is pushed into the mixture M while rotating, and when the stirring blades 231 reach the vicinity of the disc-shaped extrusion member 7, the stirring rod 23 is pulled out while continuing to rotate. This single operation is sufficient, and excessive stirring is not necessary. This stirring disperses the aggregated particles of the mixture M almost uniformly, and a paste-like cement-based fixing material FA with fluidity and viscosity is produced inside the cartridge 2. At this point, an injection cap 4 is attached to one end 31 of the cylindrical body 3 (see Figure 4(b)). Next, the cartridge 2 with the injection cap 4 attached to the cylindrical body 3 is turned upside down, and a piston 11, which is advanced by, for example, an injection gun 10, is inserted into the cylindrical body 3 from the other end 32 side, and the piston 11 is used to push the disk-shaped extrusion member 7 toward the injection cap 4, so that the cement-based fixing material FA is positioned near the injection cap 4 in advance (see Figure 4(c)).

[0025] Furthermore, the base end of the injection hose 5 is attached to the cylindrical 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 inserted into the inside of the cylindrical body 3 from the other end 32 side to form the fixing material injection device 1. The injection hose 5 attached to the injection cap 4 and having a push-in ring 6 around its tip is inserted into the borehole 101 of the concrete structure 100, and the tip opening 52 of the injection hose 5 is positioned near the back of the borehole 101 (see Figure 5(a)).

[0026] Next, cartridge 2 filled with cementitious fixing material FA is set in injection gun 10, and piston 11 of injection gun 10 is advanced until it abuts against disc-shaped pushing member 7, pushing disc-shaped pushing member 7 toward injection cap 4. As disc-shaped pushing member 7 advances, sliding in contact with the interior of cylindrical body 3, it extrudes the cementitious fixing material FA from inside cartridge 2 into injection hose 5. By pushing the cementitious fixing material FA inside cylindrical body 3, disc-shaped pushing member 7 can deliver it without mixing air into injection hose 5. The extruded cementitious fixing material FA is discharged from tip opening 52 of injection hose 5 and injected into borehole 101 beyond push-in ring 6. Air at the rear of borehole 101 is removed through the gap between the outer circumferential surface of push-in ring 6 and the wall of borehole 101, and the cementitious fixing material FA is densely packed into the area surrounded by the wall of borehole 101 and the front surface of push-in ring 6 (see Figures 5(a) and (b)).

[0027] As the cementitious anchoring material FA is densely packed into the borehole 101, the pushing ring 6 and injection hose 5 gradually recede toward the opening of the borehole 101. When the marker 51 on the injection hose 5 reaches the opening of the borehole 101, the injection of the specified amount of cementitious anchoring material FA into the borehole 101 is considered complete, the injection of the cementitious anchoring material FA is stopped, the injection hose 5 and pushing ring 6 are removed from the borehole 101, and the anchoring material injection tool 1 is removed from the borehole 101 (see Figure 5(b)). That is, the pushing ring 6 is fixed to the injection hose 5 and presses the cementitious anchoring material FA, thereby determining the position of the marker 51 relative to the end of the cementitious anchoring material FA packed into the borehole 101. Therefore, the amount of cementitious anchoring material FA packed can be properly controlled by visually checking the marker 51.

[0028] Then, as shown in Figure 6, a reinforcing bar 24 such as an anchor or shear reinforcement bar is inserted into the borehole 101 filled with a specified amount of cement-based fixing material FA so that a marker 241, which indicates the protruding or embedded amount, is positioned at the mouth of the borehole 101. If necessary, the cement-based fixing material FA that protrudes from the mouth of the borehole 101 is removed, and the cement-based fixing material FA is allowed to harden before the reinforcing bar 24 is fixed in the borehole 101.

[0029] In addition, 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 is cylindrical with the same inner diameter along its entire length. Therefore, by pushing out the cementitious fixing material FA through the disk-shaped extrusion member 7, it is possible to push out all of the cementitious fixing material FA inside the cylindrical body 3 without any waste (see Figure 7(a)). However, if the injection into the perforation 101 does not reach the specified amount and all of the cementitious fixing material FA is pushed out from inside the cylindrical body 3 (see Figure 7(b)), then, as in the above-mentioned process, the injection cap 4 is replaced with the cylindrical body 3 inside which the cementitious fixing material FA has been prepared, to form a new cartridge 2 (see Figures 4(b) and (c)), and this new cartridge 2 is set in the injection gun 10, and the fixing material injection and filling operation into the perforation 101 can be continued.

[0030] Meanwhile, since the cylinder 3 has been completely filled with the cement-based fixing material FA, the disk-shaped extrusion member 7 has moved to one end 31, so the disk-shaped extrusion member 7 is again used as the bottom cover, and a desired amount of a mixture M of water and hydraulic cement-based material that has been immersed in water for a predetermined time is poured into the cylinder 3 (see Figures 7(c) and (d)). This is then stirred with a stirring rod 23 inserted from the other end 32 of the cylinder 3 (see Figure 7(e)), generating new cement-based fixing material FA in the internal space surrounded by the cylinder 3 and the disk-shaped extrusion member 7, in preparation for a new injection operation.

[0031] When using the cartridge 2 containing the newly produced cementitious fixing material FA, the injection cap 4 is fitted to the other end 32 of the cylindrical body 3, and the cementitious fixing material FA is pushed from one end 31 toward the injection cap 4 using, for example, the piston 11 of the injection gun 10 via the disk-shaped pushing member 7, in the opposite direction to that shown in Figure 4(c). At this time, the outer diameter of the disk-shaped pushing member 7 is slightly smaller than the inner diameter of the cylindrical body 3, preferably by 0.8 mm to 1.2 mm, so that the cementitious fixing material FA moves smoothly within the cylindrical body 3, and the cylindrical body 3 can be efficiently reused without having to be washed or discarded after each use.

[0032] According to this embodiment, during the fixing material injection operation, the disc-shaped extrusion member 7 pushes the cement-based fixing material FA inside the cylindrical body 3, allowing it to be delivered without mixing air into the injection hose 5. Furthermore, the pushing ring 6, which has an outer diameter slightly smaller than the diameter of the borehole 101 in the concrete structure 100, ensures the necessary deaeration at the back of the borehole, while the pushing ring 6 nearly closes the back of the borehole, allowing the cement-based fixing material FA to be densely and evenly filled at the back of the borehole 101, including the upper part, and preventing the creation of unfilled areas at the back of the borehole 101. Therefore, the densely packed cement-based fixing material FA can reliably fix the reinforcing bar 24 to the concrete structure 100 with high strength.

[0033] Furthermore, by forming the outer diameter of the push-in ring 6 to be 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation 101, the deaeration ability to degas the air at the back of the perforation can be reliably ensured by the difference between the perforation diameter and the outer diameter of the push-in ring 6, while reliably obtaining the approximate sealing ability at the back of the perforation required for filling the viscous cement-based fixing material FA at the back of the perforation, thereby more reliably and simultaneously achieving both the deaeration ability and approximate sealing ability required for densely filling the cement-based fixing material FA at the back of the perforation.

[0034] Furthermore, by forming the pushing ring 6 from an elastically deformable material, when the injection hose 5 and the pushing ring 6 are inserted into a borehole 101 or the like in the concrete structure 100, the pushing ring 6 can be deformed when it hits the wall of the borehole 101 or the like, and this deformation allows the injection hose 5 and the pushing ring 6 to be smoothly inserted into the back of the borehole 101 or the like.

[0035] Furthermore, the outer circumferential surfaces of one axial end 31 and the other axial end 32 of the cylindrical body 3 are formed with the same diameter, and the injection cap 4 can be removably fitted and fixed to one axial end 31 and the other axial end 32 of the cylindrical body 3. This allows the cementitious fixing material FA inside the cylindrical body 3 to be pushed out without waste by the disk-shaped extrusion member 7, which slides in axial contact inside the cylindrical body 3. For example, after the injection of the cementitious fixing material FA into the borehole 101 is completed, the injection cap 4 is removed from one axial end 31 of the cylindrical body 3, and new cementitious fixing material FA is placed in the internal space surrounded by the cylindrical body 3 and the disk-shaped extrusion member 7. The removed injection cap 4 is then attached to the other axial end 32, the cylindrical body 3 is turned upside down, and in the next step, the disk-shaped extrusion member 7 is pushed from the one axial end 31 side to eject the cementitious fixing material FA from the injection cap 4 attached to the other axial end 32. In this way, the cementitious fixing material FA can be reused without the need for cleaning or disposal.

[0036] Furthermore, when the mixture M of the hydraulic cementitious material and water W obtained by immersing the fixing agent capsule 21 in water W is placed in the cartridge 2, gaps form, and stirring to eliminate these gaps can result in air being entrained and excessive air being mixed into the cementitious fixing agent FA. However, even in such cases, the cementitious fixing agent FA can be densely packed into the back of the borehole 101, etc., by using a push-in ring 6 whose outer diameter is slightly smaller than the diameter of the borehole 101 in the concrete structure 100. Furthermore, there is concern that the cementitious fixing agent FA may harden faster when used in summer when the outside air temperature and base material temperature rise. However, by using a process of immersing the fixing agent capsule 21 in water W, the immersion temperature of the water W can be lowered, thereby lowering the overall temperature of the mixture M of the hydraulic cementitious material and water W, thereby extending the usable life of the cementitious fixing agent FA.

[0037] [Scope of the invention disclosed herein] The inventions disclosed in this specification include, in addition to the individual inventions and embodiments listed as inventions, those specified by changing partial contents of these to other contents disclosed in this specification, those specified by adding other contents disclosed in this specification to these contents, or those specified by deleting partial contents of these to the extent that partial effects are obtained and creating a generic concept.The inventions disclosed in this specification also include the following contents and modifications.

[0038] For example, in the above embodiment, the mixture M obtained by immersing the fixing material capsule 21 filled with a water-setting cementitious material in water W is used as the mixture that is stirred inside the cartridge 2 to become the cementitious fixing material FA. However, the mixture that is stirred inside the cartridge to become the cementitious fixing material may be any mixture within the scope of the present invention, and may be, for example, a mixture obtained by directly putting the water-setting cementitious material and water into the cartridge 2, or a mixture obtained by directly putting the water-setting cementitious material filled in a water-soluble packaging material and water into the cartridge 2. [Industrial Applicability]

[0039] The present invention can be used to inject a cement-based fixing material into a borehole in, for example, a concrete structure, stone, brick, asphalt, or the like. [Explanation of symbols]

[0040] DESCRIPTION OF SYMBOLS 1...Adhesive injection tool 2...Cartridge 3...Cylinder 31...One end 32...Other end 4...Injection cap 41...Fitting portion 411...Base plate 412...Upstanding wall 42...Tapered portion 43...Cylindrical portion 5...Injection hose 51...Marker 52...Tip opening 6...Push-in ring 7...Disk-shaped extrusion member 8...Adhesive tape 10...Injection gun 11...Piston 12...Piston rod 13...Lever 14...Holding portion 21...Adhesive capsule 22...Packaging material 23...Stirring rod 231...Stirring blade 24...Reinforcing bar 241...Marker FA...Cementitious adhesive M...Mixture W...Water 100...Concrete structure 101...Drilling

Claims

1. a cartridge for injecting a cement-based fixing material into a borehole in a structure, the cartridge comprising: a cylindrical body having an injection cap detachably fixed to one axial end thereof; an injection hose having a base end attached to the injection cap; a push-in ring having an outer diameter slightly smaller than the diameter of the borehole and externally fitted and fixed to the tip of the injection hose; and a disk-shaped extrusion member that comes into axial contact with the inside of the cylindrical body when pressed by an injection gun, and pushes the cement-based fixing material inside the cartridge out of the injection hose; the cylindrical body is cylindrical and has the same inner and outer diameters along its entire length, and the outer peripheral surfaces of one axial end and the other axial end of the cylindrical body are formed with the same diameter, and the injection cap, which can be detachably externally fitted to the other axial end of the cylindrical body, is externally fitted to one end of the cylindrical body; a first step of immersing a fixing agent capsule, in which a water-setting cementitious material is filled in a water-permeable packaging material, in water to prepare the mixture, removing the packaging material, and placing the mixture in the cartridge; a second step of agitating the mixture within the cartridge to produce the cementitious fixing agent; a third step of inserting the injection hose attached to the injection cap into the perforation; a fourth step of pushing the disc-shaped extrusion member with an injection gun to slide and contact the inside of the cylindrical body, and discharging the cement-based fixing material from the tip opening of the injection hose by extruding the disc-shaped extrusion member, and injecting the cement-based fixing material into the hole deeper than the pushing ring; A fixing agent injection method comprising:

2. 2. The fixing agent injection method according to claim 1, wherein the outer diameter of the push-in ring is formed to be 0.8 mm to 1.2 mm smaller than the standard diameter of the perforation.

3. 3. The fixing agent injection method according to claim 1, wherein the push-in ring is made of an elastically deformable material.

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