Device and method for testing strength of plastic state-semi-rigid state double-liquid slurry

Abstract

The invention discloses a device and a method for testing the strength of plastic state-semi-rigid state double-liquid slurry. The device comprises an automatic injection system, an intelligent evaluation system, a slurry injection system and a maintenance system. The automatic penetration system mainly comprises a penetration cone, a control panel, a lifting frame, a ruler and a penetration value displayer, and free vertical falling and penetration value measurement of the penetration cone are achieved. The intelligent evaluation system comprises a signal transmission module, a microprocessor, a discrimination module and a data storage module, and can calculate the compressive strength of the slurry and discriminate the flow state, the plastic state, the semi-rigid state and the rigid state of the slurry. The curing system controls the curing environment of the slurry through a constant-temperature water bath and temperature and humidity. According to the slurry injection system, automatic mixing and injection of slurry can be achieved, the difficulty and errors of manual preparation of a double-slurry sample are reduced, and the working efficiency is improved. According to the method, the compressive strength of the double-liquid slurry in a plastic state and a semi-rigid consolidation state is solved through the penetration value of free falling of the permeation cone.

Description

Technical Field

[0001] The invention relates to the technical field of double-liquid grouting material detection for water-rich underground engineering and shield tunnels, and in particular to a plastic-semi-rigid double-liquid slurry strength testing device and method. Background Art

[0002] As a quick-setting slurry, double-liquid slurry has the advantages of rapid filling, good plugging effect, not easily diluted by groundwater, high early strength, etc. It can fully meet the construction needs of underwater (crossing rivers and seas) large-diameter shield tunnel backfill grouting. At present, double-liquid slurry has become one of the most important grouting materials for large-diameter shield tunnel backfill grouting projects.

[0003] Among the performance indicators of dual-liquid slurry, compressive strength is one of the key parameters, which directly determines whether the backfill material can withstand water pressure and the pressure of the surrounding soil. The compressive strength of dual-liquid slurry varies significantly under different consolidation states, especially the plastic consolidation state, semi-rigid consolidation state and rigid consolidation state. These differences determine the stability and durability of the backfill material. Therefore, studying the compressive strength of dual-liquid slurry under these different consolidation states is crucial to ensuring the construction quality of shield tunnel grouting projects. However, the existing compressive strength testing devices in China are mainly used to measure the compressive strength of dual-liquid slurry under rigid consolidation state. For the compressive strength of dual-liquid slurry in plastic consolidation state and semi-rigid consolidation state, no effective testing device and method have been developed. This technical gap has led to the inability of existing research to evaluate the compressive strength of dual-liquid slurry in the early stage, and thus cannot provide comprehensive data support for actual engineering.

[0004] Therefore, it is urgent to develop a new test device that can accurately measure the compressive strength of dual-liquid slurry in different consolidation states, especially in the plastic and semi-rigid consolidation states. This will not only help to study the changing characteristics of the early compressive strength of dual-liquid slurry, but also provide reliable data support for the further development of dual-liquid slurry materials and promote the continuous advancement of underwater shield tunnel grouting engineering technology. Summary of the invention

[0005] Based on the above-mentioned deficiencies of the prior art, the present invention proposes a plastic-semi-rigid dual-liquid slurry strength testing device. The device can measure the compressive strength of the dual-liquid backfill grouting material of the shield tunnel in the plastic consolidation state and the semi-rigid consolidation state, and can also distinguish the slurry flow state, plastic state, semi-rigid state and rigid state.

[0006] To achieve the above object, the present invention provides the following technical solutions: A plastic state-semi-rigid state dual-liquid slurry strength testing device, comprising an automatic penetration system, an intelligent evaluation system, a slurry injection system, and a curing system; The automatic penetration system includes a workbench, a lifting frame, a support frame, a ruler, a penetration value display, a control panel, a display screen, a penetration cone, a height fine-tuning platform, a height fine-tuning knob, a level bubble, a support, and a lifting adjustment knob. The workbench is fixedly connected to the height fine-tuning platform. A sample dish is arranged above the height fine-tuning platform. A penetration cone is arranged above the sample dish. The penetration cone includes a penetration cone tip, a penetration cone handle, a penetration cone body, and a penetration cone cap. The penetration cone handle is movably inserted into a reserved hole of the lifting frame. A ruler and a penetration value display are arranged above the penetration cone. The ruler is slidably inserted into a sliding hole of the penetration value display. The penetration value display is fixedly connected to the lifting frame. The lifting frame is slidably sleeved with a support frame, and the support frame is fixedly connected to the rear side of the workbench. The intelligent evaluation system includes a signal transmission module, a microprocessor, a discrimination module and a data storage module; the signal transmission module is used to transmit the output signal of the penetration value display to the microprocessor, the microprocessor substitutes the penetration value into a preset relationship between the penetration value and the compressive strength to calculate the compressive strength, and the discrimination module is connected to the microprocessor and is used to compare the calculated compressive strength value with the set threshold value, so as to determine whether the slurry is in a fluid state, a plastic state, a semi-rigid state or a rigid state; the result is output through the display screen and stored in the data storage module; The slurry injection system includes an A liquid injection pipe, a B liquid injection pipe, a first pressure gauge, a second pressure gauge, an A liquid storage tank, a B liquid storage tank, a first check valve, a second check valve, a first valve, a second valve, a third valve, a Y-shaped pipe, and a mixed liquid injection pipe. The mixed liquid injection pipe is connected to the first valve above, the first valve is connected to the Y-shaped pipe above, the second valve and the third valve are respectively provided on the left and right sides of the Y-shaped pipe, the first check valve is provided above the second valve, the A liquid storage tank is provided above the first check valve, the A liquid injection pipe is provided above the A liquid storage tank, the second check valve is provided above the third valve, the B liquid storage tank is provided above the second check valve, and the B liquid injection pipe is provided above the B liquid storage tank; The curing system includes a constant temperature water bath control system and a temperature and humidity control system. The constant temperature water bath control system includes a constant temperature water bath box, a second control panel, a water bath input pipe, and a water bath output pipe. The temperature and humidity control system includes a curing box, a temperature control button, a humidity control button, and a switch.

[0007] The above-mentioned plastic state-semi-rigid state dual liquid slurry strength testing device is characterized in that the penetration cone tip is fixedly connected to the penetration cone handle, the penetration cone body is fixedly sleeved with the penetration cone handle, the penetration cone handle is adapted to the penetration cone cap and is connected by a thread, the penetration cone tip length is 36mm±0.02mm, the penetration cone tip angle is 15°±20′, and the total mass of the penetration cone is 230g.

[0008] The above-mentioned plastic state-semi-rigid state dual slurry strength testing device is characterized in that the relationship between the penetration value and the compressive strength is y =(1.479+0.045* x )^(-1 / 0.169), where the penetration value x Unit: mm, compressive strength y The unit is N / mm 2 , can test the double liquid slurry plastic state - semi-rigid state compressive strength, the testable strength range is 0.001-0.1 N / mm 2 .

[0009] The above-mentioned plastic state-semi-rigid state dual slurry strength testing device is characterized in that the fluid state, plastic state, semi-rigid state or rigid state, when the strength is less than 0.001 N / mm 2 , the slurry is in a fluid state, when the strength is 0.001-0.01 N / mm 2 When the slurry is in a plastic state, the strength is 0.01-0.1 N / mm 2 , the slurry is in a semi-rigid state, when the strength is greater than 0.1 N / mm 2 , the slurry is in a rigid state.

[0010] The above-mentioned plastic state-semi-rigid state dual liquid slurry strength testing device is characterized in that the upper surface of the workbench is provided with a level bubble for judging whether the working surface is in a horizontal state, and the lifting adjustment knob is used to adjust the height of the support to ensure that the working surface is in a horizontal position.

[0011] The above-mentioned plastic state-semi-rigid state dual-liquid slurry strength testing device is characterized in that an amplifier and a light are provided on the upper surface of the workbench to assist the penetration cone in contacting the sample surface.

[0012] The above-mentioned plastic state-semi-rigid state dual liquid slurry strength testing device is characterized in that the water bath input pipe and the water bath output pipe are respectively connected to the water bath water inlet hole and the water bath water outlet hole of the test dish to form a water bath circulation, and the mixed liquid injection pipe is connected to the grouting hole on the right side of the test dish to form a grouting passage, so that the slurry is injected into the sample dish.

[0013] The above-mentioned plastic state-semi-rigid state dual liquid slurry strength testing device is characterized in that the slurry injection system accurately adjusts the volume ratio of liquid A and liquid B by controlling the injection flow rate thereof, thereby realizing automatic mixing and injection of the slurry.

[0014] A plastic state-semi-rigid state double liquid slurry strength test method, characterized in that the plastic state-semi-rigid state double liquid slurry strength test device is used, comprising the following steps: Step 1: Observe whether the bubble in the level is centered, and make sure the workbench is in a horizontal position by adjusting the height of the support; Step 2: Turn on the constant temperature water bath, heat the water to the required temperature, and form a water circulation through the water bath input pipe and the water bath output pipe; or adjust the temperature and humidity in the curing box by adjusting the temperature control button and the humidity control button; Step 3: Control the injection flow rate of liquid A and liquid B, start the grouting equipment, open the second valve and the third valve respectively, then open the first valve, and inject the mixed slurry of liquid A and liquid B into the sample dish; Step 4: After the mixed slurry is injected, close the third valve first, then close the injection equipment of liquid A and liquid B, remove the mixed liquid injection pipe, then open the third valve to discharge the excess slurry, and inject clean water into the liquid A injection pipe and the liquid B injection pipe respectively to flush the entire pipeline; Step 5: After the mixed slurry solidifies for the required time, the lifting frame is lowered to a suitable height through the control panel; Step 6: Slowly turn the height fine-adjustment knob clockwise to slowly raise the height fine-adjustment platform. Stop turning the height fine-adjustment knob when the lower end of the penetration cone contacts the surface of the mixed slurry in the sample dish. In the case of poor light, use an amplifier and a light to ensure that the lower end of the penetration cone is in full contact with the surface of the mixed slurry. Step 7: Move the ruler vertically downward so that the lower surface of the ruler contacts the upper surface of the penetration cone, and then set the penetration value display to zero; Step 8: Use the control panel to let the penetration cone fall vertically and penetrate into the mixed slurry. Move the ruler vertically downward so that the lower surface of the ruler contacts the upper surface of the penetration cone. Read the penetration value display reading, which is the penetration value. Obtain the compressive strength according to the intelligent evaluation system and determine the consolidation state of the slurry. Repeat the test 3 times and take the average value as the final result.

[0015] Through the penetration test of the penetration cone, the relationship between the penetration value and the compressive strength was established. Based on the penetration value of the penetration cone, the compressive strength of the double liquid slurry was obtained, and the strength test range was 0.001-0.1 N / mm 2 . It can judge the consolidation state of the slurry throughout the whole process. When the strength is less than 0.001 N / mm 2 , the slurry is in a fluid state, when the strength is 0.001-0.01 N / mm 2 When the slurry is in a plastic state, the strength is 0.01-0.1 N / mm 2 , the slurry is in a semi-rigid consolidated state.

[0016] The existing compressive strength tester is mainly used to measure the strength of the double liquid slurry in a rigid state, while the testing device and method provided by the present invention can measure the compressive strength of the double liquid slurry in a plastic to semi-rigid state, which makes up for the shortcomings of the existing testing equipment.

[0017] The automatic penetration system, intelligent evaluation system, slurry injection system, and curing system constitute an integrated device for testing the compressive strength of dual-liquid slurry. The slurry injection system is used to cast the specimen, and the volume ratio of liquid A and liquid B is accurately adjusted by controlling the different injection flow rates, thereby reducing the difficulty and error of manually preparing dual-liquid slurry specimens, thereby effectively improving work efficiency. The automatic penetration system can realize the free vertical fall of the penetration cone and the measurement of the penetration value, and the operation steps are simple. The intelligent evaluation system can distinguish the flow state, plastic state, semi-rigid state, and rigid state of the slurry. The curing system can realize the curing of the slurry under different water temperature environments, as well as at different humidity and temperature, so as to measure the compressive strength under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the automatic penetration system structure; Figure 3 This is a schematic diagram of the slurry injection system structure; Figure 4 It is a schematic diagram of the penetration cone structure; Figure 5 This is a flow chart of the main test procedures of the present invention; Figure 6 A graph showing the relationship between the penetration value obtained from the penetration cone penetration test and the compressive strength; Figure 7 It is the development process of the double liquid slurry consolidation state.

[0019] Figure numerals: 101, test system; 1011, workbench; 1012, height fine-adjustment platform; 1013, sample dish; 1014, penetration cone; 10141, penetration cone tip; 10142, penetration cone handle; 10143, penetration cone body; 10144, penetration cone cap; 1015, penetration value display; 1016, ruler; 1017, lifting frame; 1018, support frame; 1019, display screen; 10110, control panel; 10111, amplifier; 10112, illumination lamp; 10113, height fine-adjustment knob; 10114, lifting adjustment knob; 10115, support; 10116, water bath water inlet hole; 10117, water bath water outlet hole; 10118, grouting hole; 1 0119, level bubble; 201, slurry injection system; 2011, mixed liquid injection pipe; 2012, first valve; 2013, Y-type tube; 2014, second valve; 2015, third valve; 2016, first check valve; 2017, second check valve; 2018, A liquid storage tank; 2019, B liquid storage tank; 20110, A liquid injection pipe; 20111, B liquid injection pipe; 301, warm water bath control system; 3011, constant temperature water bath; 3012, second control panel; 3013, water bath input pipe; 3014, water bath output pipe; 302, temperature and humidity control system; 3021, curing box; 3022, switch; 3023, temperature control button; 3024, humidity control button. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the implementation examples of this application to clearly and in detail describe the scheme in the embodiments of this application. It should be clear that the embodiments provided by the present invention only represent some examples of the present invention and do not represent all examples. The embodiments of this application and other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of this application.

[0021] like Figure 1-4 As shown, a plastic state-semi-rigid state dual-liquid slurry strength testing device includes an automatic penetration system 101, an intelligent evaluation system, a slurry injection system 201, and a maintenance system; like Figure 1-2As shown, the test system includes an automatic penetration system and an intelligent evaluation system. The automatic penetration system includes a workbench 1011, a lifting frame 1017, a support frame 1018, a ruler 1016, a penetration value display 1015, a control panel 10110, a display screen 1019, a penetration cone 1014, a height fine-tuning platform 1012, a height fine-tuning knob 10113, a level bubble 10119, a support 10115, and a lifting adjustment knob 10114. The workbench 1011 is fixedly connected to the height fine-tuning platform 1012, a sample dish is arranged above the height fine-tuning platform 1012, and a penetration cone is arranged above the sample dish 1013. 1014, the penetration cone 1014 comprises a penetration cone tip 10141, a penetration cone handle 10142, a penetration cone body 10143, and a penetration cone cap 10144, the penetration cone handle 10142 is movably inserted into a reserved hole of a lifting frame, a scale 1016 and a penetration value display 1015 are arranged above the penetration cone 1014, the scale 1016 is slidably inserted into a sliding hole of the penetration value display 1015, the penetration value display 1015 is fixedly connected to a lifting frame 1017, the lifting frame 1017 is slidably sleeved with a support frame 1018, and the support frame 1018 is fixedly connected to the rear side of the workbench 1011; The intelligent evaluation system includes a signal transmission module, a microprocessor, a discrimination module and a data storage module; the signal transmission module is used to transmit the output signal of the penetration value display to the microprocessor, the microprocessor substitutes the penetration value into a preset relationship between the penetration value and the compressive strength to calculate the compressive strength, and the discrimination module is connected to the microprocessor and is used to compare the calculated compressive strength value with the set threshold value, so as to determine whether the slurry is in a fluid state, a plastic state, a semi-rigid state or a rigid state; the result is output through the display screen and stored in the data storage module; like Figure 1 and 3As shown, the slurry injection system 201 includes a liquid A injection pipe 20110, a liquid B injection pipe 20111, a liquid A storage tank 2018, a liquid B storage tank 2019, a first check valve 2016, a second check valve 2017, a first valve 2012, a second valve 2014, a third valve 2015, a Y-shaped tube 2013, and a mixed liquid injection pipe 2011. The mixed liquid injection pipe 2011 is connected to the first valve 2012 at the top, and the first valve 2012 is connected to the Y-shaped tube 2013 at the top. A second valve 2014 and a third valve 2015 are respectively provided on both sides, a first check valve 2016 is provided above the second valve 2014, an A liquid storage tank 2018 is provided above the first check valve 2016, an A liquid injection pipe 20110 is provided above the A liquid storage tank 2018, a second check valve 2017 is provided above the third valve 2015, a B liquid storage tank 2019 is provided above the second check valve 2017, and a B liquid injection pipe 20111 is provided above the B liquid storage tank 2019; like Figure 1 As shown, the maintenance system includes a constant temperature water bath control system 301 and a temperature and humidity control system 302. The constant temperature water bath control system 301 includes a constant temperature water bath box 3011, a second control panel 3012, a water bath input pipe 3013, and a water bath output pipe 3014. The temperature and humidity control system 302 includes a maintenance box 3021, a switch 3022, a temperature control button 3023, and a humidity control button 3024.

[0022] like Figure 4 The penetration cone tip 10141 is fixedly connected to the penetration cone handle 10142, the penetration cone body 10143 is fixedly connected to the penetration cone handle 10142, the penetration cone handle 10142 is adapted to the penetration cone cap 10144 and is connected by threads, the length of the penetration cone tip 10141 is 36mm±0.02mm, the angle of the penetration cone tip 10141 is 15°±20′, and the total mass of the penetration cone 1014 is 230g.

[0023] like Figure 6-7 As shown, the relationship between the penetration value and the compressive strength is y =(1.479+0.045* x )^(-1 / 0.169), where the penetration value x Unit: mm, compressive strength y The unit is N / mm 2 , can test the double liquid slurry plastic state - semi-rigid state compressive strength, the testable strength range is 0.001-0.1 N / mm 2 .

[0024] The fluid state, plastic state, semi-rigid state or rigid state, when the strength is less than 0.001 N / mm 2 , the slurry is in a fluid state, when the strength is 0.001-0.01 N / mm 2 When the slurry is in a plastic state, the strength is 0.01-0.1 N / mm 2 , the slurry is in a semi-rigid consolidation state, when the strength is greater than 0.1 N / mm 2 , the slurry is in a rigid state.

[0025] like Figure 2 As shown, the upper surface of the workbench is provided with a level bubble 10119 for judging whether the work surface is in a horizontal state, and the lifting adjustment knob 10114 is used to adjust the height of the support 10115 to ensure that the work surface is in a horizontal position.

[0026] like Figure 2 As shown, an amplifier 10111 and an illumination lamp 10112 are provided on the upper surface of the workbench to assist the penetration cone in contacting the sample surface.

[0027] like Figure 1 As shown, the water bath input pipe 3013 and the water bath output pipe 3014 are respectively connected to the water bath water inlet hole 10116 and the water bath water outlet hole 10117 of the test dish 1013 to form a water bath circulation, and the mixed liquid injection pipe 2011 is connected to the grouting hole 10118 on the right side of the test dish 1013 to form a grouting passage, so that the slurry is injected into the sample dish 1013.

[0028] The slurry injection system accurately adjusts the volume ratio of liquid A and liquid B by controlling the injection flow rates thereof, thereby achieving automatic mixing and injection of the slurry.

[0029] The plastic state-semi-rigid state dual slurry strength testing method comprises the following steps: Step 1: Observe whether the liquid bubble in the level bubble 10119 is centered, and ensure that the workbench 1011 is in a horizontal position by adjusting the height of the support 10115; Step 2: Turn on the constant temperature water bath 3011, heat the water to the required temperature, and form a water circulation through the water bath input pipe 3013 and the water bath output pipe 3014; or adjust the temperature and humidity in the curing box 3021 by adjusting the temperature control button 3023 and the humidity control button 3024; Step 3: Control the injection flow of liquid A and liquid B, start the grouting equipment, open the second valve 2014 and the third valve 2015 respectively, then open the first valve 2012, and inject the mixed slurry of liquid A and liquid B into the sample dish 1013; Step 4: After the mixed slurry is injected, first close the first valve 2012, then close the injection equipment of liquid A and liquid B, and remove the mixed liquid injection pipe 2011, then open the first valve 2012 to discharge the excess slurry, and inject clean water into the liquid A injection pipe 20110 and the liquid B injection pipe 20111 to flush the entire pipeline; Step 5: After the mixed slurry solidifies for the required time, the lifting frame 1017 is lowered to a suitable height through the control panel 10110; Step 6: Slowly turn the height fine-adjustment knob 10113 clockwise to slowly raise the height fine-adjustment platform 1012. Stop turning the height fine-adjustment knob 10113 when the lower end of the penetration cone 1014 contacts the surface of the mixed slurry in the sample dish 1013. In the case of poor light, use the amplifier 10111 and the illumination lamp 10112 to ensure that the lower end of the penetration cone 1014 contacts the surface of the mixed slurry. Step 7: Move the scale 1016 vertically downward so that the lower surface of the scale 1016 contacts the upper surface of the penetration cone 1014, and then set the penetration value display 1015 to zero; Step 8: Use the control panel 10110 to make the penetration cone 1014 fall freely and vertically, and penetrate into the mixed slurry, and move the ruler 1016 vertically downward so that the lower surface of the ruler 1016 contacts the upper surface of the penetration cone 1014, and read the reading of the penetration value display 1015, which is the penetration value. Obtain the compressive strength according to the intelligent evaluation system and judge the consolidation state of the slurry. Repeat the test 3 times and take the average value as the final result.

Claims

1. A plastic-semi-rigid dual-liquid slurry strength testing device, comprising an automatic penetration system, an intelligent evaluation system, a slurry injection system, and a curing system; The automatic penetration system includes a workbench, a lifting frame, a support frame, a ruler, a penetration value display, a control panel, a display screen, a penetration cone, a height fine-tuning platform, a height fine-tuning knob, a level bubble, a support, and a lifting adjustment knob. The workbench is fixedly connected to the height fine-tuning platform. A sample dish is arranged above the height fine-tuning platform. A penetration cone is arranged above the sample dish. The penetration cone includes a penetration cone tip, a penetration cone handle, a penetration cone body, and a penetration cone cap. The penetration cone handle is movably inserted into a reserved hole of the lifting frame. A ruler and a penetration value display are arranged above the penetration cone. The ruler is slidably inserted into a sliding hole of the penetration value display. The penetration value display is fixedly connected to the lifting frame. The lifting frame is slidably sleeved with a support frame, and the support frame is fixedly connected to the rear side of the workbench. The intelligent evaluation system includes a signal transmission module, a microprocessor, a discrimination module and a data storage module. The signal transmission module is used to transmit the output signal of the penetration value display to the microprocessor. The microprocessor substitutes the penetration value into a preset relationship between the penetration value and the compressive strength to calculate the compressive strength. The discrimination module is connected to the microprocessor and is used to compare the calculated compressive strength value with the set threshold value, so as to determine whether the slurry is in a fluid state, a plastic state, a semi-rigid state or a rigid state; the result is output through the display screen and stored in the data storage module; The slurry injection system includes an A liquid injection pipe, a B liquid injection pipe, a first pressure gauge, a second pressure gauge, an A liquid storage tank, a B liquid storage tank, a first check valve, a second check valve, a first valve, a second valve, a third valve, a Y-shaped pipe, and a mixed liquid injection pipe. The mixed liquid injection pipe is connected to the first valve above, the first valve is connected to the Y-shaped pipe above, the second valve and the third valve are respectively provided on the left and right sides of the Y-shaped pipe, the first check valve is provided above the second valve, the A liquid storage tank is provided above the first check valve, the A liquid injection pipe is provided above the A liquid storage tank, the second check valve is provided above the third valve, the B liquid storage tank is provided above the second check valve, and the B liquid injection pipe is provided above the B liquid storage tank; The curing system includes a constant temperature water bath control system and a temperature and humidity control system. The constant temperature water bath control system includes a constant temperature water bath box, a second control panel, a water bath input pipe, and a water bath output pipe. The temperature and humidity control system includes a curing box, a temperature control button, a humidity control button, and a switch.

2. A plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The length of the penetration cone tip is 36±0.02 mm, the angle of the penetration cone tip is 15°±20′, and the total mass of the penetration cone is 230 g.

3. A plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The relationship between the penetration value and the compressive strength is: y =(1.479+0.045* x )^(-1 / 0.169), where the penetration value x Unit: mm, compressive strength y The unit is N / mm 2 , can test the double liquid slurry plastic state - semi-rigid state compressive strength, the testable strength range is 0.001-0.1 N / mm 2 .

4. The plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The fluid state, plastic state, semi-rigid state or rigid state, when the strength is less than 0.001 N / mm 2 , the slurry is in a fluid state, when the strength is 0.001-0.01 N / mm 2 When the slurry is in a plastic state, the strength is 0.01-0.1 N / mm 2 , the slurry is in a semi-rigid state, when the strength is greater than 0.1 N / mm 2 , the slurry is in a rigid state.

5. The plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The upper surface of the workbench is provided with a level bubble for judging whether the work surface is in a horizontal state, and the lifting adjustment knob is used to adjust the height of the support to ensure that the work surface is in a horizontal position.

6. The plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: An amplifier and an illumination lamp are arranged on the upper surface of the workbench to assist the penetration cone in contacting the sample surface.

7. The plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The water bath input pipe and the water bath output pipe are respectively connected to the water bath water inlet hole and the water bath water outlet hole of the test dish to form a water bath circulation. The mixed liquid injection pipe is connected to the grouting hole on the right side of the test dish to form a grouting passage, so that the slurry is injected into the sample dish.

8. The plastic-semi-rigid dual-liquid slurry strength testing device according to claim 1, characterized in that: The slurry injection system accurately adjusts the volume ratio of liquid A and liquid B by controlling the injection flow rates thereof, thereby achieving automatic mixing and injection of the slurry.

9. A plastic-semi-rigid dual-liquid slurry strength test method, characterized in that: A plastic state-semi-rigid state dual slurry strength testing device according to any one of claims 1 to 8 is used, comprising the following steps: Step 1: Observe whether the bubble in the level is centered, and make sure the workbench is in a horizontal position by adjusting the support height; Step 2: Turn on the constant temperature water bath, heat the water to the required temperature, and form a water circulation through the water bath input pipe and the water bath output pipe; or adjust the temperature and humidity in the curing box by adjusting the temperature control button and the humidity control button; Step 3: Control the injection flow rate of liquid A and liquid B, start the grouting equipment, open the second valve and the third valve respectively, then open the first valve, and inject the mixed slurry of liquid A and liquid B into the sample dish; Step 4: After the mixed slurry is injected, close the first valve first, then close the injection equipment of liquid A and liquid B, remove the mixed liquid injection pipe, then open the first valve to discharge the excess slurry, and inject clean water into the liquid A injection pipe and the liquid B injection pipe respectively to flush the entire pipeline; Step 5: After the mixed slurry solidifies for the required time, the lifting frame is lowered to a suitable height through the control panel; Step 6: Slowly turn the height fine-adjustment knob clockwise to slowly raise the height fine-adjustment platform. When the lower end of the penetration cone contacts the surface of the mixed slurry in the sample dish, stop turning the height fine-adjustment knob. In poor light conditions, use an amplifier and a light to ensure that the lower end of the penetration cone contacts the surface of the mixed slurry. Step 7: Move the ruler vertically downward so that the lower surface of the ruler contacts the upper surface of the penetration cone, and set the penetration value display to zero; Step 8: Use the control panel to allow the penetration cone to fall freely and vertically and penetrate into the mixed slurry, and move the scale vertically downward so that the lower surface of the scale contacts the upper surface of the penetration cone, and read the penetration value display reading, which is the penetration value. The compressive strength is obtained according to the intelligent evaluation system, and the consolidation state of the slurry is judged. The test is repeated 3 times and the average value is taken as the final result.

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