Foamed concrete rheological property testing device and evaluation method thereof

Abstract

The application discloses a kind of foam concrete rheological property testing device and evaluation method, including isobaric pipeline, isobaric pipeline extension direction is provided with several branch pipes, several grouting holes are provided on each branch pipe, each grouting hole is respectively communicated with one detachable acrylic pipe, detection steel pipe is provided at the bottom of one detachable acrylic pipe, the top of the detection steel pipe is not in contact with the inner wall of the top surface of detachable acrylic pipe, and the bottom thereof passes through the bottom of detachable acrylic pipe and extends out.The application solves the problem of single pouring object in the prior art, and quantitatively evaluates the pouring compactness and rheological property of foam concrete in the limited closed space during tunnel construction.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of foam concrete tunnel construction, and particularly relates to a foam concrete rheological property testing device and an evaluation method thereof. BACKGROUND

[0002] Foam concrete is often used as a tunnel damping material because of its good damping effect. The reason for its good damping effect is that foam concrete contains many closed pores, which can disperse part of the load when subjected to external load, thereby prolonging the propagation path of the seismic wave and shortening the propagation speed of the seismic wave. In actual tunnel engineering construction, the foam concrete lining of the tunnel vault is often not compacted. The reason is that foam concrete has rheological properties and naturally produces surface subsidence. Therefore, during the longitudinal and circumferential horizontal migration of the vault, the foam concrete surface subsidence phenomenon occurs, resulting in the inability of the tunnel vault to fill the entire formwork space, thereby causing the vault and haunch to be empty.

[0003] However, the existing technology for pouring foam concrete is single and cannot meet the needs of foam concrete in tunnel damping material construction. In view of this, in order to ensure that the foam concrete required for pumping and cast-in-place has good working performance, the rheological properties of foam concrete need to be evaluated. SUMMARY

[0004] The purpose of the present application is to provide a foam concrete rheological property testing device and an evaluation method thereof, which solves the problem of single pouring object in the prior art and quantitatively evaluates the pouring compactness and rheological properties of foam concrete in a limited closed space during tunnel construction.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0006] A foam concrete rheological property testing device comprises an isobaric pipeline, a plurality of branch pipelines are arranged in the extension direction of the isobaric pipeline, a plurality of grouting holes are arranged on each branch pipeline, and each grouting hole is respectively connected with a detachable acrylic pipe.

[0007] Further, a detection steel pipe is arranged at the bottom of one detachable acrylic pipe, the top of the detection steel pipe is not in contact with the inner wall of the top surface of the detachable acrylic pipe, and the bottom of the detection steel pipe extends out through the bottom of the detachable acrylic pipe.

[0008] Further, a pressure sensor is arranged on the isobaric pipeline, and the pressure value in the isobaric pipeline is detected by the pressure sensor, so that the slurry pressure in the isobaric pipeline is always consistent.

[0009] Further, the grouting holes have different diameters.

[0010] Further, the acrylic tubes have different lengths.

[0011] Further, the acrylic tubes have different diameters.

[0012] Further, the detachable acrylic main pipe is provided with a plurality of partitions, and the detachable acrylic main pipe is divided into a plurality of equal detachable acrylic pipes by the plurality of partitions.

[0013] The application adopts another technical scheme, a foam concrete rheological property testing device and evaluation method of concrete, which comprises the following steps:

[0014] S1, pouring foam concrete into the isobaric pipeline, and monitoring the pressure of the foam concrete in the isobaric pipeline in real time through the pressure sensor; when the pressure of the foam concrete in the isobaric pipeline reaches a preset pressure value and remains stable, pouring foam concrete into a plurality of corresponding acrylic pipes through a plurality of branch pipes.

[0015] S2, monitoring the pouring condition of the foam concrete in the acrylic pipe through the detection steel pipe arranged on the acrylic pipe; when the bottom end of the detection steel pipe has foam concrete slurry seepage, stopping grouting.

[0016] S3, after the grouting is completed, ensuring that all the acrylic pipes are placed transversely along the length direction and standing for a period of time until the foam concrete solidifies;

[0017] S4, disassembling the acrylic pipes, observing the surface subsidence of the concrete in each acrylic pipe, recording the rheological property evaluation indexes of the concrete corresponding to the preset pressure, and evaluating the surface subsidence degree of the concrete through the rheological property evaluation indexes.

[0018] S5, under the condition that the pressure in the isobaric pipeline remains at the preset pressure, selecting grouting holes with different diameters, repeating steps S1 to S4, and recording the rheological property evaluation indexes of the concrete corresponding to the same preset pressure.

[0019] S6, under the condition that the preset pressure remains unchanged, selecting acrylic pipes with different diameters, repeating steps S1 to S4, and recording the rheological property evaluation indexes of the concrete corresponding to the different diameters of the acrylic pipes.

[0020] S7, under the condition that the preset pressure remains unchanged, selecting acrylic pipes with different lengths, repeating steps S1 to S4, and recording the rheological property evaluation indexes of the concrete corresponding to the different lengths of the acrylic pipes.

[0021] S8, draw the foam concrete subsurface drop comparison curve according to the different rheological property evaluation indexes obtained in steps S4, S5, S6 and S7 respectively; select the foam concrete corresponding to the optimal rheological property evaluation index from the comparison curve, so as to determine the size of the acrylic pipe corresponding to the foam concrete and the corresponding pressure value, and prepare the foam concrete with optimal rheological property through the size of the acrylic pipe and the corresponding pressure value.

[0022] Further, the rheological property evaluation index comprises a volume ratio alpha V , and a height difference delta h.

[0023] Further, the volume ratio alpha , wherein V 标 represents the volume of the foam concrete obtained by manually pouring the acrylic pipe; and V represents the volume of the foam concrete obtained by pouring the acrylic pipe through the foam concrete rheological property testing device.

[0024] The height difference delta h = H - h, wherein H represents the height of the foam concrete obtained by pouring the acrylic pipe through the foam concrete rheological property testing device; and h represents the height of the foam concrete obtained by manually pouring the acrylic pipe.

[0025] The present application has the following advantages:

[0026] 1. The foam concrete rheological property testing device can test the corresponding test data of the foam concrete in acrylic pipes with different lengths and diameters, and the pouring compactness of the foam concrete is good, and the rheological property is good. The pouring compactness can be directly evaluated according to the results after pouring. The use of the appropriate foam concrete rheological property testing device and evaluation method can greatly improve the construction quality, so that the foam concrete has good working performance, thereby providing an evaluation basis for the rheological property of the foam concrete.

[0027] 2. The foam concrete rheological property testing device can simultaneously pour multiple different acrylic pipes, which not only improves the efficiency, but also provides multiple different control tests to ensure the rationality of the test results. The present application can reduce the error to a certain extent by setting a partition plate in the acrylic pipe.

[0028] 3. The foam concrete rheological property testing device can pour multiple acrylic pipes at a time through the multiple branch pipes arranged in the extension direction of the constant pressure pipe, and then evaluate the compactness and rheological property of the concrete in the poured multiple acrylic pipes by using various parameters, thereby improving the efficiency of the evaluation of the rheological property of the foam concrete.

[0029] 4. The method for evaluating the rheological property of the foamed concrete provided by the application can change the grouting hole to have different diameters, and change the acrylic pipe to have different lengths and diameters, so that the device provided by the application can quickly select the concrete with the optimal rheological property from the concrete poured from multiple acrylic pipes, and therefore, the evaluation method provided by the application has high evaluation efficiency and high evaluation accuracy. The optimal pouring mode corresponding to the concrete with the optimal rheological property can be determined, so that the subsequent poured concrete can greatly improve the construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a whole schematic diagram of a foamed concrete rheological property testing device of the application;

[0031] Figure 2 is a foamed concrete pouring flowchart of a reference group of the application;

[0032] Figure 3 is a comparison diagram of the foamed concrete surface drop of different types of acrylic pipes of the application;

[0033] Figure 4 is a comparison diagram of the foamed concrete surface drop of the device group and the reference group of the application;

[0034] Figure 5 is a foamed concrete surface drop curve diagram of the same length and different diameter acrylic pipes of the application;

[0035] Figure 6 is a foamed concrete surface drop curve diagram of the different length and the same diameter acrylic pipes of the application;

[0036] Figure 7 is a foamed concrete surface drop curve diagram of the different grouting mode corresponding acrylic pipes of the application.

[0037] Among them, 1. Equal pressure pipeline; 2. Pressure sensor; 3. Branch pipeline; 4. Grouting hole; 5. Acrylic pipe; 6. Partition; 7. Detection steel pipe; 8. Screw; 9. Foamed concrete. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0039] As Figure 1As shown, a kind of foam concrete rheological property testing device, comprising: equal pressure pipeline 1, equal pressure pipeline 1 direction setting several branch pipes 3, several grouting holes 4 are provided on each branch pipe 3, and each grouting hole 4 is respectively communicated with one detachable acrylic pipe 5.Through being set in the extension direction of equal pressure pipeline 1 multiple branch pipes 3, and through multiple branch pipes 3 to the acrylic pipe 5 pouring concrete, so that a plurality of acrylic pipes 5 can be poured at a time, and then the concrete in the poured multiple acrylic pipes 5 is evaluated by using various parameters to evaluate the compactness and rheology of concrete.

[0040] In this embodiment, a detection steel pipe 7 is arranged at the bottom of one of the detachable acrylic pipes 5, the top of the detection steel pipe 7 is not in contact with the inner wall of the top surface of the detachable acrylic pipe 5, and the bottom of the detection steel pipe 7 extends out through the bottom of the detachable acrylic pipe 5. The detection steel pipe 7 is fixed to the acrylic pipe 5 by a screw 8. The detection steel pipe 7 is arranged in a detachable form and can be pulled out before the foam concrete is set. The detection steel pipe 7 is installed at the bottom of the acrylic pipe 5, and when the bottom of the detection steel pipe 7 starts to discharge slurry, the pumping of concrete can be stopped.

[0041] In this embodiment, a pressure sensor 2 is arranged on the equal pressure pipeline 1, and the pressure value in the equal pressure pipeline 1 is detected by the pressure sensor 2, so that the slurry pressure in the equal pressure pipeline 1 is always kept consistent.

[0042] In this embodiment, the branch pipe 3 is connected with different acrylic pipes 5 through the grouting hole 4, the grouting hole 4 has different diameters, the grouting hole 4 is arranged in the center of each section of the acrylic pipe 5, so that each section has the same grouting amount at the same time. The grouting hole 4 has different diameters. The acrylic pipe 5 has different lengths. The acrylic pipe 5 has different diameters. The foam concrete rheological property evaluation method provided by the present application changes the grouting hole to have different diameters. By changing the acrylic pipe to have different lengths and diameters, the device provided by the present application can quickly select the concrete with the best rheological property from the concrete poured in multiple acrylic pipes.

[0043] In this embodiment, a detachable acrylic main pipe is also included, and a plurality of partitions 6 are arranged in the detachable acrylic main pipe, so that the detachable acrylic main pipe is divided into a plurality of equal detachable acrylic pipes 5 by the partitions 6.

[0044] A foam concrete rheological property testing device for evaluating concrete includes the following steps:

[0045] S1, pouring foam concrete into the isobaric pipeline 1, and monitoring the pressure of the foam concrete in the isobaric pipeline 1 in real time through the pressure sensor 2, and when the pressure of the foam concrete in the isobaric pipeline 1 reaches a preset pressure value and remains stable, pouring foam concrete into corresponding acrylic pipes 5 through a plurality of branch pipelines 3.

[0046] S2, monitoring the pouring of foam concrete in the acrylic pipe 5 through the detection steel pipe 7 arranged on the acrylic pipe 5, and stopping grouting when the bottom end of the detection steel pipe 5 has foam concrete slurry seepage.

[0047] S3, after completing grouting, ensuring that all acrylic pipes 5 are placed transversely along their length and left for a period of time until the foam concrete solidifies.

[0048] S4, disassembling the acrylic pipe 5, observing the surface subsidence of the concrete in each acrylic pipe 5, recording the corresponding rheological evaluation index of the concrete under the preset pressure, and evaluating the subsidence degree of the concrete surface through the rheological evaluation index.

[0049] S5, keeping the pressure in the isobaric pipeline 1 at a preset pressure, selecting grouting holes 4 of different sizes, repeating steps S1 to S4, and recording the corresponding rheological evaluation index of the concrete under the same preset pressure.

[0050] S6, under the premise of keeping the preset pressure, selecting acrylic pipes 5 of different diameters, repeating steps S1 to S4, and recording the corresponding rheological evaluation index of the concrete under different diameters of the acrylic pipe 5.

[0051] S7, under the premise of keeping the preset pressure, selecting acrylic pipes 5 of different lengths, repeating steps S1 to S4, and recording the corresponding rheological evaluation index of the concrete under different lengths of the acrylic pipe 5. The rheological evaluation index includes: volume ratio α V , height difference Δh.

[0052] S8, drawing a comparison curve of the surface subsidence of the foam concrete according to the different rheological evaluation indexes obtained in steps S4, S5, S6, and S7; selecting the foam concrete with the optimal rheological evaluation index from the comparison curve, and determining the size of the acrylic pipe 5 corresponding to the foam concrete and the corresponding pressure value through the foam concrete, so as to prepare foam concrete with optimal rheological property through the size of the acrylic pipe 5 and the corresponding pressure value.

[0053] Volume ratio Wherein, V 标V represents the volume of the foam concrete corresponding to the artificial pouring of the acrylic pipe 5; V represents the volume of the foam concrete corresponding to the artificial pouring of the acrylic pipe 5.

[0054] The height difference Δh = H-h, wherein H represents the height of the foam concrete corresponding to the artificial pouring of the acrylic pipe 5; h represents the height of the foam concrete corresponding to the artificial pouring of the acrylic pipe 5.

[0055] The foam concrete rheological property testing device can test the corresponding test data of the foam concrete in the acrylic pipes with different lengths and diameters, and the pouring compactness of the foam concrete is good, and the rheological property is good. The pouring compactness can be directly evaluated according to the pouring result. The evaluation method provided by the application has high evaluation efficiency and high evaluation accuracy. According to the concrete with the optimal rheological property, the optimal pouring mode corresponding to the concrete can be determined, so that the construction quality of the subsequent poured concrete is greatly improved.

[0056] Embodiment 1:

[0057] The acrylic pipe 5 has a size of 15m in length and 50cm in diameter, the acrylic pipe 5 has a size of 12m in length and 50cm in diameter, and the acrylic pipe 5 has a size of 12m in length and 40cm in diameter. All the acrylic pipes 5 are divided into three segments. The related test data of the foam concrete surface height drop of the artificial pouring segment and the device pouring segment are measured, and the rheological property index is evaluated.

[0058] A foam concrete rheological property testing device for evaluating the concrete in tunnel construction, comprising the following steps:

[0059] S1, pouring foam concrete into the isobaric pipeline 1, and simultaneously monitoring the pressure of the foam concrete in the isobaric pipeline 1 through the pressure sensor 2. When the pressure of the foam concrete in the isobaric pipeline 1 reaches a certain preset pressure value and remains stable, the foam concrete is poured into the corresponding three acrylic pipes 5 through the three branch pipelines 3.

[0060] As shown in Figure 2 , a reference group is set. The partition plate 6 in the acrylic pipe 5 is removed, and the foam concrete is poured from top to bottom by artificial pouring. After each segment is filled, the partition plate 6 is added, and the horizontal is placed.

[0061] S2, monitoring the pouring condition of the foam concrete in the acrylic pipe 5 through the detection steel pipe 7 arranged on the acrylic pipe 5. When the low end of the detection steel pipe 5 has foam concrete slurry seepage, stop grouting;

[0062] S3, after the grouting is completed, ensure that all the acrylic tubes 5 are placed transversely along the length direction and stand for a period of time until the foam concrete solidifies.

[0063] S4, the acrylic tube 5 is disassembled, the concrete surface subsidence in each acrylic tube 5 is observed, the rheological evaluation index of the concrete corresponding to the preset pressure is recorded, and the rheological evaluation index is used to evaluate the concrete surface subsidence degree.

[0064] S5, under the condition that the pressure in the equal pressure pipeline 1 is maintained at the preset pressure, the grouting holes 4 with different sizes are selected, steps S1 to S4 are repeated, and the rheological evaluation index of the concrete corresponding to the same preset pressure is recorded.

[0065] S6, under the condition that the preset value pressure is maintained, the acrylic tube 5 with a diameter of 50 cm is selected, the acrylic tube 5 with a diameter of 50 cm is selected, the acrylic tube 5 with a diameter of 40 cm is selected, steps S1 to S4 are repeated, and the rheological evaluation index of the concrete corresponding to the different diameters of the acrylic tube 5 is recorded.

[0066] S7, under the condition that the preset value pressure is maintained, the acrylic tube 5 with a length of 15 m is selected, the acrylic tube 5 with a length of 12 m is selected, the acrylic tube 5 with a length of 12 m is selected, steps S1 to S4 are repeated, and the rheological evaluation index of the concrete corresponding to the different lengths of the acrylic tube 5 is recorded.

[0067] S8, the foam concrete surface subsidence comparison curve is drawn according to the different rheological evaluation indexes obtained in steps S4, S5, S6 and S7; the foam concrete with the optimal rheological evaluation index is selected from the comparison curve, so that the size of the acrylic tube 5 corresponding to the foam concrete and the corresponding pressure value are determined, and the foam concrete with the optimal rheological property is prepared through the size of the acrylic tube 5 and the corresponding pressure value.

[0068] The present application can improve the efficiency and provide multiple different control tests to ensure the rationality of the test results by pouring multiple different acrylic tubes in the foam concrete rheological property testing device.

[0069] The acrylic tube 5 is poured by the reference group, and the foam concrete in the acrylic tube 5 has been hardened, as shown in the drawing, the subsidence heights of the two sides are measured respectively, the maximum subsidence height is obtained after comparison, the average value is obtained by repeating three times, and is recorded as h. Figure 3

[0070] ​Take the foamed concrete in tunnel construction rheological property test device pouring completed and the foamed concrete has hardened in the acrylic pipe 5, measure the drop height of both sides respectively, compare the maximum drop height after measurement, take the average value for three times, record as H.

[0071] The foamed concrete in tunnel construction rheological property test device pouring drop height H minus the reference group artificial perfusion drop height h, that is, a one-dimensional evaluation index Ah can be obtained, wherein the smaller the difference Ah, the better the rheological property, the larger the difference Ah, the worse the rheological property.

[0072] Drop height experimental data (height unit: cm)

[0073]

[0074] (Note: In the experiment, the acrylic pipe is divided into three segments, so the length of each segment is 1 / 3 of the total length)

[0075] According to the experimental results, the one-dimensional evaluation index height difference Ah basically decreases with the decrease of the size, wherein the height difference of the acrylic pipe with a length of 12 m and a diameter of 50 cm is the smallest, and in the one-dimensional index, the smaller the height difference, the better the rheological property.

[0076] The evaluation method of volume V is as follows: first, fill the acrylic pipe without pouring foamed concrete with standard sand, weigh the mass of the standard sand after pouring out, then fill the acrylic pipe with foamed concrete poured and hardened with standard sand, weigh the mass of the standard sand after pouring out, and the volume of the hardened foamed concrete can be calculated by subtracting the mass of the standard sand before and after pouring.

[0077] First, fill the acrylic pipe without pouring foamed concrete with standard sand, weigh the mass of the standard sand after pouring out, repeat the steps for three times to take the average value, and the total volume V of the acrylic pipe can be obtained by dividing the mass by the density of the standard sand 总 . Fill the acrylic pipe with foamed concrete poured and hardened with standard sand, weigh the mass of the standard sand after pouring out, repeat the steps for three times to take the average value, and the volume V obtained at this time is 空-1 . V 总 -V 空-1 The volume V of the foamed concrete after artificial perfusion can be obtained 标 . Fill the acrylic pipe with foamed concrete poured and hardened in the foamed concrete in tunnel construction rheological property test device with standard sand, weigh the mass of the standard sand after pouring out, repeat the steps for three times to take the average value, and the volume V obtained at this time is 空-2 . V 总 -V 空-2 The volume V of the foamed concrete after pouring in the foamed concrete in tunnel construction rheological property test device can be obtained.

[0078] As shown in Figure 4 , the volume V of the foam concrete poured in the rheological performance testing device in tunnel construction is divided by the artificial pouring volume V 标 , to obtain the three-dimensional evaluation index a V , wherein the greater the ratio a V , the better the rheological performance, and the smaller the ratio a V , the worse the rheological performance.

[0079] The experimental data of the volume V (volume unit: L)

[0080]

[0081] (Note: In the experiment, the acrylic pipe is divided into three segments, so the length of each segment is 1 / 3 of the total length)

[0082] According to the experimental data, the three-dimensional evaluation index ratio a V of the 12m long and 50cm diameter acrylic pipe is the largest, and in the three-dimensional index, the greater the volume ratio, the better the rheological performance.

[0083] The experimental conclusions obtained by using different evaluation indexes are completely consistent, so the pouring compactness of the foam concrete in the 12m long and 50cm diameter acrylic pipe is the best, and the rheological performance is also better.

[0084] By using different types of acrylic pipes, the state of the foam concrete in the tunnel is simulated, the rheological performance of the foam concrete under different conditions is studied, and the pumping and cast-in-place foam concrete in the tunnel construction has good working performance. Replacing different types of acrylic pipes can also determine the surface drop comparison curves of the corresponding foam concrete, as shown in Figure 5 , Figure 6 and Figure 7 ; from each curve, it can be seen that the different acrylic pipes 5 in the same system are distinguished; the measured index is used to evaluate the rheological performance.

[0085] The present application can test the flow index of the foam concrete in different acrylic pipes in the system, thereby solving the problem of quantitatively evaluating the pouring compactness and rheological performance of the foam concrete in the limited closed space in the tunnel construction process.

[0086] Although the content of the present application has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present application. After reading the above content, various modifications and alternatives of the present application will be obvious to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. A method of evaluating concrete by a foam concrete rheological property testing device, characterized by, It comprises the following steps: S1, pouring foam concrete into the isobaric pipeline (1), and monitoring the pressure of the foam concrete in the isobaric pipeline (1) in real time through the pressure sensor (2), and when the pressure of the foam concrete in the isobaric pipeline (1) reaches a certain preset pressure value and remains stable, pouring foam concrete into a plurality of acrylic tubes (5) through a plurality of branch pipelines (3) respectively; S2, monitoring the pouring of the foam concrete in the acrylic tube (5) through the detection steel pipe (7) arranged on the acrylic tube (5), and stopping grouting when the bottom end of the detection steel pipe (7) has foam concrete slurry seepage; S3, after the grouting is completed, ensure that all the acrylic tubes (5) are placed transversely along the length direction and stand for a period of time until the foam concrete solidifies; S4, disassemble the acrylic tube (5), observe the surface subsidence of the concrete in each acrylic tube (5), record the corresponding rheological evaluation index of the concrete under the condition of the preset pressure value, and evaluate the subsidence degree of the concrete surface through the rheological evaluation index; S5, under the condition that the pressure in the isobaric pipeline (1) remains at the preset pressure value, select grouting holes (4) of different sizes, repeat steps S1 to S4, and record the corresponding rheological evaluation index of the concrete under the condition of the same preset pressure value; S6, under the condition that the preset pressure value is maintained, select acrylic tubes (5) of different diameters, repeat steps S1 to S4, and record the corresponding rheological evaluation index of the concrete under the condition of different diameters of the acrylic tube (5); S7, under the condition that the preset pressure value is maintained, select acrylic tubes (5) of different lengths, repeat steps S1 to S4, and record the corresponding rheological evaluation index of the concrete under the condition of different lengths of the acrylic tube (5); S8, draw a comparison curve of the surface subsidence of the foam concrete according to the different rheological evaluation indexes obtained in steps S4, S5, S6 and S7; select the foam concrete with the optimal rheological evaluation index from the comparison curve, and determine the size of the acrylic tube (5) corresponding to the foam concrete and the corresponding pressure value through the foam concrete, so as to prepare foam concrete with optimal rheological property through the size of the acrylic tube (5) and the corresponding pressure value.

2. The method for evaluating the concrete by the foam concrete rheological property test device according to claim 1, characterized in that, The rheological evaluation index includes: volume ratio a V , height difference Ah.

3. The method for evaluating the concrete by the foam concrete rheological property test device according to claim 2, characterized in that, said volume ratio wherein said represents the volume of the foam concrete corresponding to the artificial perfusion of the acrylic pipe (5) ; V represents the volume of the foam concrete corresponding to the perfusion of the acrylic pipe (5) by using the foam concrete rheological property testing device; The height difference Δh = H-h, wherein H represents the height of the foam concrete corresponding to the acrylic tube (5) filled by the foam concrete rheological property testing device, and h represents the height of the foam concrete corresponding to the acrylic tube (5) filled by artificial pouring.

4. The method for evaluating the concrete by the foam concrete rheological property test device according to claim 1, characterized in that, The foam concrete rheological property testing device comprises an isobaric pipeline (1), a plurality of branch pipelines (3) arranged in the extension direction of the isobaric pipeline (1), a plurality of grouting holes (4) arranged on each branch pipeline (3), and a detachable acrylic tube (5) communicated with each grouting hole (4) respectively.

5. The method of evaluating concrete using the foam concrete rheological property testing device according to claim 4, characterized in that, In one of the detachable acrylic pipe (5) is provided with the detection of the bottom of the steel pipe (7), the top of the detection of the steel pipe (7) and the top of the inner wall of the pipe (5) is not in contact, its bottom through the bottom of the pipe (5) and extends out.

6. The method of evaluating concrete using the foam concrete rheological property testing device according to claim 4, characterized by, The pressure sensor (2) is arranged on the equal pressure pipeline (1), and the pressure value in the equal pressure pipeline (1) is detected through the pressure sensor (2), so that the slurry pressure in the equal pressure pipeline (1) is always consistent.

7. The method according to claim 4, wherein the foam concrete rheological property testing device is characterized by, The grouting hole (4) has different hole diameters.

8. The method according to claim 4, wherein the foam concrete rheological property testing device is characterized by, The acrylic pipe (5) has different lengths.

9. The method according to claim 8, wherein the foam concrete rheological property testing device is characterized by, The acrylic pipe (5) has different diameters.

10. The method according to any one of claims 4 to 9, wherein the method is a method for evaluating the concrete using the foamed concrete rheological property testing device. The detachable acrylic main pipe is provided with a plurality of partitions (6) in the detachable acrylic main pipe, and the detachable acrylic main pipe is divided into a plurality of equal detachable acrylic pipes (5) by the plurality of partitions (6).

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