CN114264574A - Grouting material water-dispersion-resistance performance test device and use method - Google Patents
Grouting material water-dispersion-resistance performance test device and use method Download PDFInfo
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- CN114264574A CN114264574A CN202111680203.6A CN202111680203A CN114264574A CN 114264574 A CN114264574 A CN 114264574A CN 202111680203 A CN202111680203 A CN 202111680203A CN 114264574 A CN114264574 A CN 114264574A
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- 239000000463 material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000011056 performance test Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 239000002002 slurry Substances 0.000 claims abstract description 67
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 27
- 238000007569 slipcasting Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000036571 hydration Effects 0.000 abstract description 3
- 238000006703 hydration reaction Methods 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The invention discloses a grouting material water-resistance dispersion performance test device, namely a use method, which comprises a base, wherein a grouting needle cylinder fixing table is fixedly arranged on the base; the invention can effectively test the water dispersion resistance, the retention rate and the filling performance of the slurry, and simultaneously reflects the hydration process of the grouting material through the change of the water temperature.
Description
Technical Field
The invention relates to the technical field of performance test of grouting materials in geotechnical engineering, in particular to a test device for testing the water dispersibility resistance of a grouting material and a using method thereof.
Background
In the underground engineering construction process of a water-rich karst area, safety accidents easily occur due to the fact that karst caves, karst cavities, fault zone areas, complex geological conditions and the like are faced, grouting reinforcement is needed, but underground water easily causes grouting material segregation and cementing material loss in the grouting operation process, so that parameters such as the water-gel ratio of original grouting slurry are changed, and the mechanical property and the reinforcement property of the grouting stone are seriously affected. Therefore, the water dispersion resistance of the grouting material needs to be improved, and the working performance of the grouting material in a water-rich karst environment is guaranteed.
In the prior art, a whole set of test device does not perform integrated test on the anti-dispersion performance, the retention rate and the filling performance of the slurry in a water-rich environment, and a set of test device is developed for testing the turbidity and the pH value change rule of the slurry in the water-rich environment by referring to a detailed test method and an evaluation standard in DLT 5117 plus 2000' test procedure for underwater undispersed concrete and is used for representing the anti-dispersion performance, the retention rate and the filling performance of the slurry.
Disclosure of Invention
The invention aims to provide a grouting material water dispersibility resistance performance test device and a use method thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a grouting material water-resistant dispersion performance test device comprises a base, wherein a grouting needle cylinder fixing table is fixedly arranged on the base, a grouting needle cylinder is fixedly arranged on the grouting needle cylinder fixing table, a propulsion motor is arranged on the left side of the grouting needle cylinder fixing table and is fixed on the base, a temperature-control water bath tank is arranged on the right side of the grouting needle cylinder fixing table and is fixed on the base; a push rod outer cylinder is arranged between the grouting needle cylinder and the propelling motor, and a grouting pipe is arranged between the grouting needle cylinder and the temperature control water bath tank.
As a further scheme of the invention: the two sides of the grouting needle cylinder fixing platform are provided with grouting needle cylinder fixing circular rings, and the two ends of the grouting needle cylinder are sleeved in the corresponding grouting needle cylinder fixing circular rings to realize the fixation of the grouting needle cylinder;
as a further scheme of the invention: the grouting needle cylinder is composed of an upper semi-cylindrical groove and a lower semi-cylindrical groove, the grouting needle cylinder is fixed on the grouting needle cylinder fixing platform through a grouting needle cylinder fixing ring and a bolt, a funnel is arranged on the upper semi-cylindrical groove of the grouting needle cylinder, and a slurry inlet control valve is arranged at the funnel.
As a further scheme of the invention: the tail part of the grouting needle cylinder is provided with a grouting connecting conduit, and the joint of the grouting connecting conduit and the grouting needle cylinder is provided with a sealing sleeve to realize sealing.
As a further scheme of the invention: the device is characterized in that a push rod is arranged in the push rod outer cylinder, the driving end of the push rod is connected with the power output end of a propulsion motor, a piston is arranged at the tail of the push rod, and the piston is located in the grouting needle cylinder and is in clearance fit with the grouting needle cylinder.
As a further scheme of the invention: the temperature control water bath box is filled with water, the outer surface of the temperature control water bath box is provided with a digital display screen of the adjustment temperature control water bath box, the inner surface of the temperature control water bath box is provided with a temperature sensor, a turbidity tester and a PH tester respectively, the signal output ends of the temperature sensor, the turbidity tester and the PH tester are connected with the digital display screen of the adjustment temperature control water bath box, and a tester protective cover is arranged around the temperature sensor, the turbidity tester and the PH tester.
As a further scheme of the invention: one side of the propulsion motor is provided with a motor digital display screen.
As a further scheme of the invention: the temperature control water bath tank is characterized in that a slurry stop valve is arranged at the inlet end of the temperature control water bath tank, and a slurry discharge valve is arranged at the outlet end of the temperature control water bath tank.
A use method of a grouting material water dispersibility resistance test device comprises the following steps:
the method comprises the following steps: the device is installed, the slurry discharge valve and the slurry stop valve are closed, clear water is poured into the temperature control water tank, and the temperature of the clear water is adjusted to the room temperature by adjusting a temperature control assembly in a digital display screen of the temperature control water bath tank; meanwhile, opening a slurry inlet control valve, and injecting the slurry to be tested which is mixed in advance into the grouting needle cylinder 5 through a funnel;
step two: after the first step is finished, closing the slurry inlet control valve, ensuring that the inside of a grouting needle cylinder is in a sealed state, adjusting a motor control assembly in a digital display screen of a propulsion motor, selecting the operation frequency of the motor according to grouting pressure, starting the propulsion motor to control a push rod to move, simultaneously opening a slurry stop valve, and enabling the push rod to uninterruptedly push all slurry to be detected into water at a constant speed;
step three: after the slurry is completely injected into the temperature-controlled water bath tank, standing for 1min, starting to test the turbidity and the pH value of the water body after the slurry is injected into clear water, and inputting the measured test result to a digital display screen of the temperature-controlled water bath tank;
step four: after the examination of awaiting measuring is accomplished, open the thick liquid valve of arranging, get rid of the thick liquid in the accuse temperature water bath, thick liquid discharges the back, start propulsion motor control push rod and return initial position, close row thick liquid valve and end thick liquid valve simultaneously, open thick liquid import control valve, pour the clear water into the slip casting cylinder, close thick liquid import control valve afterwards, start propulsion motor control push rod and remove, open end thick liquid valve simultaneously, clear up remaining thick liquid in the slip casting connecting conduit, start propulsion motor 2 control push rod again and return initial position, dismantle the fixing bolt on the fixed ring of slip casting cylinder, take off the cylinder upper circular slot, clear up remaining thick liquid in the slip casting cylinder, later on the cylinder circular slot installation recover.
Compared with the prior art, the invention has the beneficial effects that: the device effectively solves the problems of nonuniform slurry feeding speed, residual samples of a slurry container and the like, is operated mechanically, reduces errors caused by manual operation to the maximum extent, controls push rods with different speeds to move forwards through a propulsion motor, injects slurry in a needle cylinder into a temperature-controlled water bath box at a uniform and horizontal speed, can better simulate a grouting slurry injection mode and path, and can consider the change rule of the water dispersion resistance of the slurry along with the grouting pressure; meanwhile, the change rule of the temperature of the water body after grouting can be monitored in real time, and the hydration process of the grouting material in water is reflected; in addition, the water container made of transparent materials is beneficial to visually observing the water dispersion resistance, the fluidity and the filling performance of the grout when the grout is injected into water.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a schematic view of the internal structure of a grouting syringe;
figure 3 is a simplified diagram of a temperature sensing device, turbidity and PH testers and corresponding control components.
In the figure: the device comprises a base 1, a propelling motor 2, a push rod outer cylinder 3, a grouting needle cylinder fixing ring 4, a grouting needle cylinder 5, a grout inlet control valve 6, a funnel 7, a grout stop valve 8, a temperature control water bath tank 9, a grout discharge valve 10, a grouting pipe 11, a temperature control water bath tank 12, a fixing bolt 13, a grouting needle cylinder fixing table 14, a propelling motor 15, a tester protective cover 16, a temperature tester 17, a turbidity tester 18, a pH tester 19, a grouting connecting pipe 20, a sealing sleeve 21, a push rod 22 and a piston 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present embodiment provides a technical solution: a grouting material water-resistant dispersion performance test device comprises a base 1, a propelling motor 2, a push rod outer cylinder 3, a grouting needle cylinder fixing ring 4, a grouting needle cylinder 5, a slurry inlet control valve 6, a funnel 7, a slurry stop valve 8, a temperature control water bath tank 9, a slurry discharge valve 10, a grouting pipe 11, a temperature control water bath tank digital display screen 12, a consolidation bolt 13, a grouting needle cylinder fixing platform 14, a propelling motor digital display screen 15, a tester protective cover 16, a temperature tester 17, a turbidity tester 18, a PH tester 19, a grouting connecting pipe 20, a sealing sleeve 21, a push rod 22 and a piston 23; the upper end of the base 1 is provided with a propulsion motor 2, a grouting needle cylinder 5 and a temperature control water bath tank 9, and the propulsion motor 2, the slurry needle cylinder 5 and the temperature control water bath tank 9 are fixedly connected to the surface of the base 1 through bolts 13; the grouting needle cylinder 5 is composed of an upper semi-cylindrical groove and a lower semi-cylindrical groove and is fixed on a grouting needle cylinder fixing platform 14 through a grouting needle cylinder fixing circular ring 4 and a bolt 13, the grouting needle cylinder 5 is prevented from moving forwards in the process that a push rod 22 is pushed by a motor 2 to move, a grouting piston 23 is arranged in the grouting needle cylinder 5, and the grouting piston 23 is connected with a pushing motor 2 through the push rod 22 and a push rod outer cylinder 3; in the testing process, firstly, the slurry discharging valve 10 and the slurry stopping valve 8 are closed, clear water is poured into the temperature control water tank, meanwhile, the slurry inlet control valve 6 is opened, and slurry to be tested is injected into the needle cylinder 5 through the funnel 7; the propulsion motor 2 moves forwards by controlling the push rod 22, the slurry in the grouting needle cylinder 5 is horizontally pushed into the temperature-controlled water bath box 9 at a uniform speed through the grouting pipe 11, and the propulsion speed of the propulsion motor 2 can be regulated and controlled through the motor digital display screen 15, so that the change rule of the water dispersion resistance under different grouting pressures can be tested; be provided with temperature-sensing ware 17, turbidity tester 18, PH tester 19 in the accuse temperature water bath 9, after the thick liquid that awaits measuring is poured into accuse temperature water bath 9 into, through adjusting accuse temperature water bath 12 turbidimeters, PH tester control assembly, water turbidity and PH value after the thick liquid injection clear water of beginning test to on will measuring the test result input accuse temperature water bath digital display 12.
The test device is operated mechanically, errors caused by manual operation are reduced to the maximum extent, the push rods with different speeds are controlled by the propulsion motor to move forwards, slurry in the needle cylinder is injected into the temperature-controlled water bath box at a uniform and horizontal speed, the injection mode and path of the grouting slurry can be better simulated, and the change rule of the water dispersion resistance of the slurry along with the grouting pressure can be considered.
The thick liquid that awaits measuring passes through funnel 7 and gets into cylinder 5, thick liquid inlet control valve 6 mainly is for thick liquid gets into slip casting cylinder 5 back sealing cylinder, slip casting cylinder 5 comprises upper and lower two semi-cylindrical grooves, fix on slip casting cylinder fixed station 14 through slip casting cylinder fixed ring 4 and bolt, one of them is preventing that the motor from promoting push rod 22 and moving in-process slip casting cylinder 5 and moving forward, and the other one is through not hard up bolt after the experiment finishes, take off slip casting cylinder upper circular groove 5, be convenient for clear up remaining thick liquid that awaits measuring in the slip casting cylinder 5.
The propulsion motor 2, the grouting needle cylinder 5, the grouting pipe 11, the control valve 8 and the fixing platform 14 are made of metal materials, the sealing part 21 is made of high-damping rubber materials, and the temperature-control water bath box 9 is made of glass, so that the water dispersibility, the flowability and the filling performance of the grout can be observed conveniently when the grout is injected into water.
The temperature control component 17 and the corresponding display control component 12 are arranged in the temperature control water bath tank 9, the temperature of poured clear water can be controlled by adjusting the display control component 12, and meanwhile, the change rule of the temperature of the water body after grouting injection can be monitored in real time, and the hydration process of the grouting material in water is reflected.
After the slurry to be detected is injected into clear water in the temperature-controlled water bath tank 9, the small particles of the cementing material in the slurry are suspended in the water, so that the clear and transparent water is turbid, the small particles are dispersed in the water and simultaneously can be enhanced along with the alkalinity of the water body, and the turbidity and the PH can be changed along with the number of the small particles suspended in the water.
Be provided with turbidity tester 18 and PH tester 19 in the accuse temperature water bath to and corresponding demonstration control assembly 12, after the thick liquid that awaits measuring is whole to be poured into accuse temperature water bath 9, static 1 minute starts turbidity tester 18 and PH tester 19 through adjusting control assembly 12, and inputs the display screen with the result of testing.
A use method of a grouting material water dispersibility resistance test device comprises the following specific steps:
the method comprises the following steps: the device is installed, the slurry discharging valve 10 and the slurry stopping valve 8 are closed, clean water is poured into the temperature control water tank 9, and the temperature of the clean water is adjusted to the room temperature through the temperature control assembly 12. Meanwhile, the slurry inlet control valve 6 is opened, and the slurry to be measured which is mixed in advance is injected into the grouting needle cylinder 5 through the funnel 7.
Step two: after the first step is finished, the slurry inlet control valve 6 is closed, the inside of the grouting needle cylinder 5 is in a sealed state, the control assembly 15 of the propulsion motor is adjusted, the operation frequency of the motor is selected according to the grouting pressure, the propulsion motor 2 is started to control the push rod 22 to move, the slurry stop valve 8 is opened at the same time, and the push rod pushes all the slurry to be tested into the water uninterruptedly at a constant speed.
Step three: after the slurry is completely injected into the temperature-controlled water bath tank 9, standing for 1min, and then testing the turbidity and the pH value of the water body after the slurry is injected into the clear water by adjusting the turbidity meter of the digital display screen of the temperature-controlled water bath tank and the pH meter control component 12, and inputting the tested test result into the digital display screen 12 of the temperature-controlled water bath tank.
Step four: after the test is finished, the slurry discharging valve 10 is opened, slurry in the temperature control water bath box 9 is discharged, after the slurry is discharged, the pushing motor 2 is started to control the push rod 22 to return to the initial position, the slurry discharging valve 10 and the slurry stopping valve 8 are closed simultaneously, the slurry inlet control valve 6 is opened, clear water is poured into the grouting needle cylinder 5, the slurry inlet control valve 6 is closed subsequently, the pushing motor 2 is started to control the push rod 22 to move, the slurry stopping valve 8 is opened simultaneously, residual slurry in the grouting connecting pipe 20 is cleaned, the pushing motor 2 is started again to control the push rod 22 to return to the initial position, fixing bolts on the fixing circular ring 4 of the grouting needle cylinder are disassembled, the circular groove on the needle cylinder is taken down, residual slurry in the grouting needle cylinder 5 is cleaned, and then the circular groove on the needle cylinder is installed and restored.
Those not described in detail in this specification are within the skill of the art.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a slip casting material water dispersion resistance can test device, includes base (1), its characterized in that: a grouting needle cylinder fixing platform (14) is fixedly arranged on the base (1), a grouting needle cylinder (5) is fixedly arranged on the grouting needle cylinder fixing platform (14), a propulsion motor (2) is arranged on the left side of the grouting needle cylinder fixing platform (14) and the propulsion motor (2) is fixed on the base (1), a temperature-controlled water bath box (9) is arranged on the right side of the grouting needle cylinder fixing platform (14) and the temperature-controlled water bath box (9) is fixed on the base (1); a push rod outer cylinder (3) is arranged between the grouting needle cylinder (5) and the propulsion motor (2), and a grouting pipe (11) is arranged between the grouting needle cylinder (5) and the temperature-controlled water bath tank (9).
2. The grouting material water-resistant dispersion performance test device according to claim 1, characterized in that: grouting needle cylinder fixing circular rings (4) are arranged on two sides of the grouting needle cylinder fixing platform (14), and two ends of the grouting needle cylinder (5) are sleeved in the corresponding grouting needle cylinder fixing circular rings (4) to realize the fixation of the grouting needle cylinder (5);
the grouting needle cylinder (5) is composed of an upper semi-cylindrical groove and a lower semi-cylindrical groove and is fixed on a grouting needle cylinder fixing platform (14) through a grouting needle cylinder fixing circular ring (4) and a bolt (13), a funnel (7) is arranged on the upper semi-cylindrical groove of the grouting needle cylinder (5), and a slurry inlet control valve (6) is arranged at the funnel (7).
3. The grouting material water-resistant dispersion performance test device according to claim 2, characterized in that: a grouting connecting conduit (20) is arranged at the tail part of the grouting needle cylinder (5), and a sealing sleeve (21) is arranged at the joint of the grouting connecting conduit (20) and the grouting needle cylinder (5) to realize mutual sealing.
4. The grouting material water-resistant dispersion performance test device according to claim 1, characterized in that: the device is characterized in that a push rod (22) is arranged in the push rod outer cylinder (3), the driving end of the push rod (22) is connected with the power output end of the propulsion motor (2), a piston (23) is arranged at the tail of the push rod (22), and the piston (23) is located in the grouting needle cylinder (5) and is in clearance fit with the grouting needle cylinder.
5. The grouting material water-resistant dispersion performance test device according to claim 1, characterized in that: the temperature control water bath box is characterized in that the temperature control water bath box (9) is filled with water, an adjusting temperature control water bath box digital display screen (12) is arranged on the outer surface of the temperature control water bath box (9), a temperature sensor (17), a turbidity tester (18) and a PH tester (19) are respectively arranged on the inner surface of the temperature control water bath box (9), the signal output ends of the temperature sensor (17), the turbidity tester (18) and the PH tester (19) are connected with the adjusting temperature control water bath box digital display screen (12), and a tester protective cover (16) is arranged around the temperature sensor (17), the turbidity tester (18) and the PH tester (19).
6. The grouting material water-resistant dispersion performance test device according to claim 1, characterized in that: a motor digital display screen (15) is arranged on one side of the propulsion motor (2).
7. The grouting material water-resistant dispersion performance test device according to claim 1, characterized in that: a slurry stop valve (8) is arranged at the inlet end of the temperature control water bath tank (9), and a slurry discharge valve (10) is arranged at the outlet end of the temperature control water bath tank (9).
8. The use method of the grouting material water dispersibility resistance performance test device according to any one of claims 1-7, characterized by comprising the following steps:
the method comprises the following steps: the device is installed, the slurry discharging valve (10) and the slurry stopping valve (8) are closed, clean water is poured into the temperature control water tank (9), and the temperature of the clean water is adjusted to the room temperature by adjusting a temperature control component in a digital display screen (12) of the temperature control water bath tank; meanwhile, opening a slurry inlet control valve (6), and injecting the slurry to be tested which is mixed in advance into the grouting needle cylinder 5 through a funnel (7);
step two: after the first step is finished, closing the slurry inlet control valve (6), ensuring that the interior of the grouting needle cylinder (5) is in a sealed state, adjusting a motor control assembly in a digital display screen (15) of a propulsion motor, selecting the motor operation frequency according to the grouting pressure, starting the propulsion motor (2) to control a push rod (22) to move, and simultaneously opening a slurry stop valve (8), wherein the push rod pushes all the slurry to be tested into the water uninterruptedly at a constant speed;
step three: after the slurry is completely injected into the temperature-controlled water bath tank (9), standing for 1min, starting to test the turbidity and the pH value of the water body after the slurry is injected with clear water, and inputting the measured test result to a digital display screen (12) of the temperature-controlled water bath tank;
step four: the back is accomplished in the examination of awaiting measuring, open arrange thick liquid valve (10), the thick liquid in with accuse temperature water bath (9) is got rid of, the thick liquid discharges the back, start propulsion motor (2) control push rod (22) and return initial position, close simultaneously arrange thick liquid valve (10) and end thick liquid valve (8), open thick liquid import control valve (6), pour the clear water into slip casting cylinder (5), close thick liquid import control valve (6) afterwards, start propulsion motor (2) control push rod (22) and remove, open simultaneously and end thick liquid valve (8), clear up remaining thick liquid in slip casting connecting tube (20), restart propulsion motor 2 control push rod (22) returns initial position again, dismantle the fixing bolt on slip casting cylinder fixed ring (4), take off the circular slot on the cylinder, clear up remaining thick liquid in the slip casting cylinder (5), install the circular slot on the cylinder afterwards and recover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111680203.6A CN114264574A (en) | 2021-12-31 | 2021-12-31 | Grouting material water-dispersion-resistance performance test device and use method |
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| CN202111680203.6A CN114264574A (en) | 2021-12-31 | 2021-12-31 | Grouting material water-dispersion-resistance performance test device and use method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231257A (en) * | 2019-05-28 | 2019-09-13 | 西南交通大学 | A kind of experimental rig and method for the test of shield synchronization slip casting water resistant dispersibility |
| CN112525772A (en) * | 2020-12-09 | 2021-03-19 | 广州地铁设计研究院股份有限公司 | Test device for testing filling effect of underwater karst cave filling material |
| CN213829617U (en) * | 2020-09-30 | 2021-07-30 | 周强 | High-speed stirring barrel with quick-connection structure |
-
2021
- 2021-12-31 CN CN202111680203.6A patent/CN114264574A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231257A (en) * | 2019-05-28 | 2019-09-13 | 西南交通大学 | A kind of experimental rig and method for the test of shield synchronization slip casting water resistant dispersibility |
| CN213829617U (en) * | 2020-09-30 | 2021-07-30 | 周强 | High-speed stirring barrel with quick-connection structure |
| CN112525772A (en) * | 2020-12-09 | 2021-03-19 | 广州地铁设计研究院股份有限公司 | Test device for testing filling effect of underwater karst cave filling material |
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