Rapid repairing method for ship lock concrete structure

Abstract

The invention discloses a rapid repairing method for a ship lock concrete structure, and belongs to the technical field of concrete structure entity detection of water transportation engineering. Comprising the following steps: weighing preset parts of filling mixed components; pouring the filling mixed component into a handheld stirring tank body, and continuously stirring for a preset time to obtain a filling material; after coring of the concrete structure is completed, cleaning and impurity removal are conducted on the holes; an injection mold frame is arranged at the hole, and the hole is filled with the filler in the stirring tank body by means of the injection mold; after filling is completed, the stirring tank body is removed; the injection mold is used for secondary insertion tamping, so that the hole is densely filled, and then the injection mold is removed; and the external application framework is pressed into the surface of the hole in the vertical direction of the surface of the hole and then flattened, and repairing is completed.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete repair for water transportation engineering. Specifically, it relates to a rapid repair method for the concrete structure of a ship lock. Background Art

[0002] With the rapid development of China's water transportation industry, the construction scale and quantity of ship lock projects have also increased. During the operation of ship locks, various hidden dangers will inevitably occur, so it is necessary to regularly detect ship lock projects. In the JTS239-2015 "Technical Specification for In-situ Testing of Concrete Structures in Water Transportation Engineering", some mechanical property parameters and all durability performance measurement parameters require core sampling of the on-site concrete structure. And according to the specification, after the on-site testing work is completed, the concrete structure damage caused by the testing should be repaired in a timely manner.

[0003] Currently, the commonly used concrete core sampling repair method is to manually mix sand and gravel materials and then use a trowel to fill the mixture into the hole. After filling and leveling the surface, it is completed. This method not only has cumbersome operations, large material losses, and the filler cannot be quickly and firmly fixed. For the holes in the lateral structure, the filler is prone to deformation and displacement after repair, and the contact surface between the filler and the original structure is poorly contacted after forming, resulting in easy wear and shedding of the surface during the operation of the structure, greatly affecting the filling effect and appearance quality. Summary of the Invention

[0004] In view of the problems in the related art, the present invention proposes a rapid repair method for the concrete structure of a ship lock to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To this end, the specific technical solution adopted by the present invention is as follows: A rapid repair method for the concrete structure of a ship lock, including the following steps: Weigh a predetermined number of parts of the filling mixture components; Pour the filling mixture components into a handheld mixing tank body and continuously stir for a predetermined time to obtain a filler; After the core sampling of the concrete structure is completed, clean and remove impurities from the hole; set up a casting mold at the hole, and fill the filler in the mixing tank body into the hole by means of the casting mold; After filling, remove the mixing tank body; use the casting mold to perform secondary ramming to make the inside of the hole filled densely and then remove the casting mold; Press the external skeleton along the vertical direction of the hole surface into the hole and then smooth the remaining material to complete the repair.

[0006] In a further embodiment, the filling mixture component at least includes: cement, fly ash, granulated blast furnace slag, setting regulator, fine aggregate, water reducer and mixing water. The filling mixture component includes the following parts by weight: 60 - 80 parts of cement, 25 - 35 parts of fly ash, 20 - 30 parts of granulated blast furnace slag, 15 - 25 parts of setting regulator, 260 - 300 parts of fine aggregate, 3 - 5 parts of water reducer, and 30 - 50 parts of mixing water. Correspondingly, the recommended mixing time is 120 - 150 s, and it is required that the time from the mixing time to the completion of the filling of the filler does not exceed 200 s, otherwise the filling quality will be affected.

[0007] By adopting the above technical solution, fly ash and slag particles, as the basic cementitious materials replacing cement particles, while optimizing the volume packing distribution, reduce the initial heat of hydration, highlight the secondary hydration effect, improve the bonding strength of the filler and the long-term durability; In a further embodiment, the setting regulator includes the following components: calcium aluminate, sodium sulfate and zeolite powder. The setting regulator component includes the following parts by weight: 4 - 6 parts of calcium aluminate, 4 - 6 parts of sodium sulfate, and 25 - 35 parts of zeolite powder. Preferably, it includes: 5 parts of calcium aluminate, 5 parts of sodium sulfate, and 30 parts of zeolite powder.

[0008] In a further embodiment, both calcium aluminate and sodium sulfate in the setting regulator component are analytical pure grade powders; the zeolite powder is solid particles made from natural zeolite rock after grinding and sieving.

[0009] In a further embodiment, the setting regulator is prepared in the following manner: Weigh the components with the specified weight fractions, mix and grind the three components at room temperature for 0.5 h, then pass through a 200-mesh standard sieve and store in a bottle protected from light.

[0010] By adopting the above technical solution, the mixed component of calcium aluminate and sodium sulfate can react to form a combination of sulfoaluminate and gypsum, preventing the formation of ettringite on the surface of cement particles, and enabling C3A to react immediately, which can make the filling mixture component hydrate rapidly; the surface of the zeolite powder particles is rough and has a porous structure. As a natural catalyst carrier, it can make calcium aluminate and sodium sulfate evenly distributed in the mortar, improving the reaction uniformity of the mixture. At the same time, the silicon dioxide contained in the zeolite powder can also react with the hydrated calcium hydroxide to form a cementitious substance, further improving the hydration reaction rate. In addition, it has the advantages of improving the workability of the mixture, increasing the strength, and having a slight expansion property, which can improve the work performance of the mixture while reducing the later shrinkage amount.

[0011] In a further embodiment, the fine aggregate is natural river sand, which is the main filling component of the filler; In a further embodiment, the water reducer is a polycarboxylate high-performance water reducer, and the water reduction rate is not less than 25%, which is used to adjust the workability of the mortar mixture.

[0012] By adopting the above technical solution, adding a polycarboxylate water reducer can adjust the workability of the mortar, while avoiding the premature initial setting of the filler components, ensuring the workability and early mechanical properties of the filler components while increasing the proportion of mineral admixtures used.

[0013] In a further embodiment, the external skeleton is made of polyethylene, arranged in a cross-shaped grid with a grid spacing of 5 mm; Preferably, the external skeleton can be produced by 3D printing according to the designed structure.

[0014] By adopting the above technical solution, a filler skeleton is constructed at the surface position of the hole, which facilitates the prevention of slump deformation on the surface of the filler and improves the filling quality.

[0015] In a further embodiment, the injection mold has a material receiving end, a material feeding end, and a feeding groove communicating with the material receiving end and the material feeding end; the depth of the feeding groove shows a deepening trend from the material receiving end to the material feeding end; the material feeding end is adapted to the hole.

[0016] In a further embodiment, an inlet and outlet is provided at a designated position of the handheld stirring tank body, and the inlet and outlet is adapted to the material receiving end of the injection mold; A stirring assembly is arranged inside the handheld stirring tank body.

[0017] In a further embodiment, a handle guard is provided at a designated position of the handheld stirring tank body, and a positioning groove is provided on the handle guard, and the positioning groove is on the same side as the inlet and outlet; An outwardly extending positioning post of a predetermined length is provided on the outer side of the material receiving end of the injection mold, and the positioning post is adapted to the positioning groove.

[0018] In a further embodiment, a material port leakage prevention cover is hinged at the inlet and outlet, and when filling the material, the hinged part of the material port leakage prevention cover and the stirring tank body is below the inlet and outlet.

[0019] In a further embodiment, the stirring assembly includes: A stirring central axis, installed inside the stirring tank body along the long axis direction; Stirring blades, fixed on the stirring central axis according to a predetermined shape; A stirring handle, drivingly connected to one end of the stirring central axis and located outside the stirring tank body.

[0020] The beneficial effects of the present invention are as follows: (1) The present invention adopts the method of combining a special handheld injection mold with a handheld stirring tank, which can replace the current commonly used method of manually mixing sand and gravel and then filling the mixture into the repair hole with a trowel. This method improves the density of the filler and its contact area with the hole surface, improves the repair filling effect while reducing material loss.

[0021] (2) The present invention proposes a new way of combining a filler with an externally applied framework. Aiming at the problems in the existing repair technology that the outer surface of the filler is prone to deformation and displacement under the influence of gravity, and the filler is prone to scouring, wear and shedding on the surface during the operation of the lock before hardening, the filler can be quickly shaped and has a high bonding strength with the structural surface during repair, ensuring that the filler does not flow out during the operation of the lock, greatly improving the filling effect and appearance quality of the holes in the concrete structure of the lock. Moreover, the handheld mixing tank and the injection mold can be reused, the device is light, the structure is simple, the operation is easy, and it is environmentally friendly, with extremely high economy and universality.

[0022] (3) The present invention proposes a high-early-strength and high-performance quick-setting mortar component for the filler, which can enable the mixed components of the filler to hydrate and coagulate quickly, greatly improving the early strength and bonding performance of the filling components, and improving the filling quality and filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flowchart of a rapid core-taking repair method for the concrete structure of a lock.

[0024] Figure 2 is a structural diagram after repair based on the rapid core-taking repair method for the concrete structure of a lock.

[0025] Figure 3 is a structural diagram of the externally applied framework.

[0026] Figure 4 is a front view of the erection between the injection mold and the hole.

[0027] Figure 5 is a side view of the erection between the injection mold and the hole.

[0028] Figure 6 is a side view of the erection among the handheld mixing tank, the injection mold and the hole.

[0029] Figure 7 is an effect diagram before on-site core-taking repair of the structure.

[0030] Figure 8 is an effect diagram after on-site core-taking repair of the structure.

[0031] Figures 1 to 6 The various markings in are: hole A, handheld mixing tank 1, injection mold 2, filler 3, externally applied framework 4, mixing tank body 11, feeding and discharging port 12, mixing central axis 13, mixing blade 14, mixing handle 15, handle guard 16, material receiving end 21, material feeding end 22, positioning column 23. DETAILED IMPLEMENTATION MANNER

[0032] To further illustrate each embodiment, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention.

[0033] As Figure 1 shown, this embodiment discloses a rapid repair method for the concrete structure of a ship lock, including: Weigh a predetermined number of parts of the filling and mixing components; pour the filling and mixing components into the handheld mixing tank 1 and continuously stir for a predetermined period of time to obtain the filling material 3. Among them, the mixing components of the filling material 3 used in this embodiment include the following parts by weight: 60 - 80 parts of cement, 25 - 35 parts of fly ash, 20 - 30 parts of granulated blast furnace slag, 15 - 25 parts of setting regulator, 260 - 300 parts of fine aggregate, 3 - 5 parts of water reducing agent, and 30 - 50 parts of mixing water. Preferably, it includes: 70 parts of cement, 30 parts of fly ash, 25 parts of granulated blast furnace slag, 20 parts of setting regulator, 280 parts of fine aggregate, 4 parts of water reducing agent, and 40 parts of mixing water.

[0034] Among them, the crystal cell structure of the main minerals of the zeolite powder has cubic symmetry and a porous supercage structure inside, with calcium ions as the main exchangeable cations.

[0035] Preparation method of zeolite powder: ① Natural zeolite rock is crushed, washed to remove impurities, dried, and then ground to 300 meshes; ② The ground powder is mixed with calcium hydroxide in a mass ratio of 10∶1, and alkali fusion is carried out at 600 °C for 2 hours. After cooling, the excess alkali is washed with deionized water; ③ The treated powder is added to an alkali solution containing sodium silicate and sodium aluminate with a molar mass ratio of 2∶1, the pH is adjusted to 11.0, and crystallization is carried out at 120 °C in a reaction kettle for 10 hours, and then solid-liquid separation is carried out; ④ The treated powder is dried and ground twice to 300 meshes.

[0036] Correspondingly, the recommended stirring time is 120 - 150 s, and it is required that the time from the mixing time to the completion of the filling of the filling material does not exceed 200 s, otherwise it will affect the filling quality of the filling material.

[0037] After the concrete structure coring is completed, the hole A is cleaned to remove impurities to ensure that there are no impurities in the hole A; the injection mold 2 is erected at the hole A, and the filling material 3 in the mixing tank body 11 is filled into the hole A by means of the injection mold 2; After filling is completed, the mixing tank body 11 is removed; the injection mold 2 is used for secondary ramming to make the inside of the hole A filled densely, and then the injection mold 2 is removed; The external skeleton 4 is pressed into the surface along the vertical direction of the surface of the hole A and the surplus material is leveled to complete the repair. For reference, see Figure 2 .

[0038] In another embodiment, the injection mold 2 has a material receiving end 21, a material feeding end 22, and a feeding groove communicating with the material receiving end 21 and the material feeding end 22; the depth of the feeding groove shows a deepening trend from the material receiving end 21 to the material feeding end 22; the material feeding end 22 is adapted to the hole A. The injection mold 2 is made of hard plastic or steel material, the material feeding end 22 has a crescent-shaped cross-section, and it gradually thickens after the material receiving end 21, and the inner surface gradually rises to form a slope, that is, the depth of the feeding groove shows a deepening trend from the material receiving end 21 to the material feeding end 22. The rear end extends outward to form a U-shaped bottom protection according to the cross-sectional shape at the position where the front end extends to the surface of the hole A. The device is installed on the lower surface of the core-taking hole A, and can prevent the filler 3 from being exposed and wasted during filling while completing the ramming operation during filling. Further, the cross-sectional diameter of the material feeding end 22 can be set to 5 cm, 8 cm or 10 cm according to the size of the core-taking hole.

[0039] An inlet and outlet is provided at a designated position of the handheld mixing tank 1 body, and the inlet and outlet is adapted to the material receiving end 21 of the injection mold 2; a mixing assembly is provided inside the handheld mixing tank 1 body.

[0040] In a further embodiment, the mixing assembly includes: a mixing central axis 13 installed along the long axis direction inside the mixing tank body 11. A mixing blade 14 with a predetermined shape is fixedly arranged on the mixing central axis 13, such as in a welded form to meet the strength required for sufficient mixing. In addition, the predetermined shape can be spiral or other shapes.

[0041] It is worth mentioning that both ends of the mixing central axis 13 are in sealed and rotatable connection with the mixing tank body 11. To facilitate driving the rotation of the mixing central axis 13, one end of the mixing central axis 13 is connected with a mixing handle 15, and the mixing handle 15 is located outside the mixing tank body 11. The mixing handle 15 is provided to drive the self-rotation of the mixing central axis 13 to realize the mixing of the composite material.

[0042] Further, the mixing tank body 11 is a steel elliptical spherical shell, and its thickness is not less than 5 mm. The mixing blade 14 is of steel structure.

[0043] For the convenience of operation, a handle guard 16 is fixed at a designated position of the mixing tank body 11, and the handle guard 16 is wrapped with a rubber handguard for stabilizing the mixing tank body 11 during mixing.

[0044] In another embodiment, in order to achieve the stability and convenience required for material injection, a positioning groove is provided on the handle 16, and the positioning groove is on the same side as the inlet and outlet; correspondingly, a positioning post 23 extending outward by a predetermined length is provided on the outer side of the material receiving end 21 of the injection mold 2, and the positioning post 23 is adapted to the positioning groove. In other words, the front end of the handle 16 is an open-hole structure, and the anti-leakage mold handle can be inserted during filling, so that the filler 3 can enter the inside of the hole A along the upper surface of the injection mold 2.

[0045] During use, after the concrete structure coring is completed, the coring hole A is preliminarily cleaned to ensure that the hole A is clean and free of debris. The injection mold 2 is placed on the hole A, and the inside of the mixing tank body 11 is preliminarily wetted.

[0046] Open the inlet and outlet 12 of the handheld mixing tank 1, pour the mixed components of the filler 3, then close the inlet and outlet 12 and stir. Invert the mixing tank body 11, align the positioning groove at the front end of the handle 16 with the positioning post 23 of the injection mold 2, and continue to rotate the mixing handle 15 so that the mixed repair material overflows from the inlet and outlet 12 to the upper surface of the injection mold 2 and flows into the hole A along its surface. When rotating, the injection mold 2 can be moved in and out and tamped to make the repair material fill evenly.

[0047] Through the above implementation method, the current technical problems can be solved. When repairing the coring of the lock concrete structure, the filler can be quickly shaped and the surface can be hardened, improving the density of the filler and its contact area with the surface of the hole A, reducing the material loss while improving the repair filling effect, and greatly improving the filling effect and appearance quality of the hole A repair of the lock concrete structure.

[0048] Example 1 Step 1: Weigh 70 parts of cement, 30 parts of fly ash, 25 parts of granulated blast furnace slag, 20 parts of setting regulator, and 280 parts of fine aggregate. Add the above components to the handheld mixing tank 1 and mix evenly to obtain a mixed dry powder, and the mixing time is not less than 30 s; Step 2: Weigh 4 parts of water reducing agent and 40 parts of mixing water. Stir and disperse the above setting regulator in water to obtain a mixed solution; Step 3: Stir the mixed dry powder prepared in Step 1 and the mixed solution obtained in Step 2 for 130 s to form a mixture mortar.

[0049] Example 2 Step 1: Weigh 60 parts of cement, 40 parts of fly ash, 20 parts of granulated blast furnace slag, 25 parts of setting regulator, and 280 parts of fine aggregate. Add the above components to the handheld mixing tank 1 and mix evenly to obtain a mixed dry powder, and the mixing time is not less than 30 s; Step 2: Weigh 5 parts of water reducing agent and 35 parts of mixing water, and stir and disperse the above setting regulator in water to obtain a mixed solution; Step 3: Stir the mixed dry powder prepared in Step 1 and the mixed solution obtained in Step 2 for 120 s to form a mixed mortar.

[0050] The above preparation process is carried out at room temperature.

[0051] It should be noted that the raw materials used in the above embodiments are as follows: Cement: Ordinary Portland cement conforming to national standard GB / T 175-2023, with a grade of P·O 42.5, and the manufacturer is Deqing Southern Cement Co., Ltd.; Fly ash: Fly ash conforming to national standard GB / T 1596-2017, and the manufacturer is Xuancheng Shuangle Renewable Resources Co., Ltd.; Ground granulated blast-furnace slag: Ground granulated blast-furnace slag powder conforming to national standard GB / T18046-2017, with a grade of S95, and the manufacturer is Nanjing Nangang Iron and Steel Co., Ltd.; Fine aggregate: Natural river sand conforming to national standard GB / T 14684-2011, medium sand, and the manufacturer is Longyou County River Dredging Sand Resource Development Co., Ltd.

[0052] Setting regulator: Prepared by the laboratory itself. The components include the following weight parts: 4-6 parts of calcium aluminate, 4-6 parts of sodium sulfate, and 25-35 parts of zeolite powder. Preferably, it includes: 5 parts of calcium aluminate, 5 parts of sodium sulfate, and 30 parts of zeolite powder. Both calcium aluminate and sodium sulfate in the components of the setting regulator are analytical pure grade powders; the zeolite powder uses natural zeolite powder conforming to industry standard JG / T566-2018, which is a solid particle made by grinding and sieving natural zeolite rock.

[0053] The setting regulator is prepared in the following way: Weigh the components with the specified weight fractions, mix and grind the three components at room temperature for 0.5 h, then pass through a 200-mesh standard sieve and store in a bottle in the dark.

[0054] It should be noted that the reason for using the above setting regulator ratio is that the mixed components of calcium aluminate and sodium sulfate can react to form a combination of sulfoaluminate and gypsum, preventing the formation of ettringite on the surface of cement particles, and enabling the immediate reaction of C3A, which can make the filler mixed components hydrate rapidly; the surface of the zeolite powder particles is rough and has a porous structure. As a natural catalyst carrier, it can make the inorganic accelerating components evenly distributed in the mortar, improving the reaction uniformity of the mixture. At the same time, the silicon dioxide contained in the zeolite powder can also react with the hydrated calcium hydroxide to form a gelling substance, further improving the hydration reaction rate. In addition, it has the advantages of improving the workability of the mixture, increasing the strength, and having a slight expansion property, which can improve the working performance of the mixture while reducing the later shrinkage amount.

[0055] Comparative Example 1 Weigh 140 parts of cement, 280 parts of fine aggregate, 4 parts of water reducing agent and 40 parts of water, and mix them evenly to obtain the filler.

[0056] Comparative Example 2 Weigh 75 parts of cement, 35 parts of fly ash, 30 parts of granulated blast furnace slag, 280 parts of fine aggregate, 4 parts of water reducing agent and 40 parts of water, and mix them evenly to obtain the filler.

[0057] Compared with Comparative Example 1, mineral admixtures composed of fly ash, granulated blast furnace slag, etc. replace part of the cement as the binder in proportion, and the bonding strength and early mechanical strength of the hardened mortar are analyzed by comparison; compared with Comparative Example 2, the setting retarder is partially substituted for the binder, and the setting time of the mixture is analyzed by comparison.

[0058] The setting time test of the examples is carried out according to the relevant test steps of GB / T 50080-2016; the tensile bonding strength test of the bonding strength is carried out according to the test steps of JGJ / T70-2009; the flexural and compressive performance test is carried out according to the mortar flexural and compressive test steps of GB / T 17671-2017.

[0059] In summary, the test results of the properties of the mixtures in the examples are shown in Table 1.

[0060] Table 1 Performance Results of Examples The performance data in the table prove that the mortar of the mixture obtained by mixing the filler 3 provided in the examples of the present invention according to the proportions in the above-mentioned claims has the characteristics of short setting time, good bonding performance and high early strength, ensuring the performance of the filler after the core sampling repair of the lock concrete structure.

[0061] As seen from the on-site test Figure 7 and Figure 8 , the filler of this embodiment meets the requirements at the beginning of the invention, and the on-site implementation effect is good.

[0062] The above-mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. A method for rapid repair of a ship lock concrete structure, characterized in that: The following steps are involved: Weighing a predetermined number of filling mix components; Pour the filling mixed components into a hand-held stirring tank, and continue stirring for a predetermined time to obtain a filling material; After coring of the concrete structure is completed, the holes are cleaned and debris removed; An injection mold is set up at the hole, and the filling material in the mixing tank is filled into the hole by means of the injection mold; After filling, remove the mixing tank; use the injection mold to perform secondary tamping to fill the holes densely and then remove the injection mold; The external coating skeleton is pressed into the hole surface along the vertical direction of the hole surface to smooth out the remaining material and complete the repair.

2. A method for rapid repair of ship lock concrete structure according to claim 1, characterized in that: The filling and mixing components at least include: cement, fly ash, granulated blast furnace slag, setting regulator, fine aggregate, water reducing agent and mixing water.

3. A method for rapid repair of a ship lock concrete structure according to claim 2, characterized in that: The coagulant components include the following parts by weight: 4-6 parts of calcium aluminate, 4-6 parts of sodium sulfate, and 25-35 parts of zeolite powder.

4. A method for rapid repair of a ship lock concrete structure according to claim 1, characterized in that: The external application skeleton is made of polyethylene and has a tic-tac-toe grid structure; the external application skeleton is made by 3D printing according to the design.

5. A method for rapid repair of ship lock concrete structure according to claim 3, characterized in that: The unit cell structure of the zeolite powder has a cubic symmetry and an internally porous super cage structure, with calcium ions as the main exchangeable cations.

6. A method for rapid repair of ship lock concrete structure according to claim 1, characterized in that: The injection mold has a material receiving end, a material feeding end and a material feeding trough connected to the material receiving end and the material feeding end; the depth of the material feeding trough tends to deepen from the material receiving end to the material feeding end; and the material feeding end is adapted to the hole.

7. A method for rapid repair of a ship lock concrete structure according to claim 1, characterized in that: An inlet and outlet are provided at a designated position of the hand-held stirring tank body, and the inlet and outlet are adapted to the material receiving end of the injection mold; A stirring assembly is arranged in the handheld stirring tank.

8. A method for rapid repair of a ship lock concrete structure according to claim 6, characterized in that: A guard handle is provided at a designated position of the hand-held stirring tank body, a positioning groove is provided on the guard handle, and the positioning groove is located on the same side as the inlet and outlet; A positioning column extending outward by a predetermined length is arranged on the outer side of the material receiving end of the injection mold, and the positioning column is adapted to the positioning groove.

9. A method for rapid repair of a ship lock concrete structure according to claim 6, characterized in that: The inlet and outlet are hinged with a material inlet leak-proof cover. When filling, the hinged part of the material inlet leak-proof cover and the stirring tank body is located below the inlet and outlet.

10. A method for rapid repair of ship lock concrete structure according to claim 7, characterized in that: The stirring assembly comprises: A stirring center shaft is installed in the stirring tank along the long axis direction; A stirring blade is fixed on the stirring center shaft in a predetermined shape; The stirring handle is transmission-connected to one end of the stirring center shaft and is located outside the stirring tank.

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