AU2020385374A1 - Simulation device for evaluating concrete pouring quality and method using the same - Google Patents
Simulation device for evaluating concrete pouring quality and method using the same Download PDFInfo
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- AU2020385374A1 AU2020385374A1 AU2020385374A AU2020385374A AU2020385374A1 AU 2020385374 A1 AU2020385374 A1 AU 2020385374A1 AU 2020385374 A AU2020385374 A AU 2020385374A AU 2020385374 A AU2020385374 A AU 2020385374A AU 2020385374 A1 AU2020385374 A1 AU 2020385374A1
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000011362 coarse particle Substances 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 101000713585 Homo sapiens Tubulin beta-4A chain Proteins 0.000 description 1
- 102100036788 Tubulin beta-4A chain Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The present disclosure discloses a simulation device for evaluating concrete pouring
quality, in which one side of a horizontal device is connected with a vacuum pump through a
first delivery pipe, the other side of the horizontal device is connected with a vertical device
5 through a second delivery pipe, a pressure gauge and a first valve are disposed on the first
delivery pipe, a second valve is disposed on the second delivery pipe, and a vent hole with a
valve is disposed at a top end of the vertical device. The present disclosure further provides an
evaluation method using the device, by which an entire process of pouring and curing a
press-grouting pile is visually monitored, and critical construction parameters i.e. grouting
0 pressure and lifting velocity are evaluated based on a coarse particle distribution uniformity
parameter a, a pore volume parameter P, a density parameter p and a volume shrinkage
parameter AV.
Description
[0001] The present disclosure relates to the technical field of geotechnical engineering tests, and in particular to a simulation device for evaluating concrete pouring quality and a method using the same.
[0002] A long auger drilling press-grouting pile is formed as follows: a long auger drilling rig is adopted to drill to a designed elevation, a concrete pump is used to press out superfluid fine aggregate concrete from the bottom of a drill bit, and the drill bit is lifted while concrete is press-grouted until a pile is formed; after the concrete is grouted to a designed elevation, a reinforcement cage is inserted into the concrete pile body at one time to the designed elevation by means of dead-weight of the reinforcement cage or by using a special vibration device, so as to form a reinforced concrete grouting pile. Such pile has a greatly-increased carrying capacity due to no mud cake at a side of the pile and no sediments at the bottom of the pile.
[0003] In a process of lifting the long auger drilling press-grouting pile, quality defects will be caused to the pile body due to hole collapse and diameter reduction. Therefore, during the construction of the press-grouting pile, the following three parameters are usually controlled: a lifting velocity, a grouting pressure and a filling coefficient (a ratio of a real concrete density to a theoretical concrete density). However, in the traditional method of evaluating pile body quality, core drilling sampling is performed after a pile body is cured and molded. The traditional method has the following defects: 1. the concrete taken out by core drilling brings great disturbance to test because it is significantly different from a real state of the pile body concrete; 2. the collapse of the concrete and the uniformity of the pile body cannot be observed in real time; 3. comparison of pile quality cannot be realized by controlling grouting pressure and lifting velocity.
[0004] The present disclosure aims to provide a device for simulating an indoor concrete pressurized grouting process and an integrated pouring quality evaluation method to test a grouting pressure and a lifting velocity simply, accurately and rapidly and perform monitoring and evaluation for coarse particle distribution uniformity, pore volume, filling density and I in-solidification volume shrinkage of a press-grouting pile.
[0005] According to a first aspect of the present disclosure, there is provided a simulation device for evaluating concrete pouring quality. The simulation device includes:
[0006] a horizontal device, having a sealed transparent stirring cavity, where a stirring rod is disposed in the stirring cavity, and a hatch is disposed on a side wall of the horizontal device; and
[0007] a vertical device, having a sealed transparent holding cavity.
[0008] One side of the horizontal device is connected with a vacuum pump through a first delivery pipe, the other side of the horizontal device is connected with the vertical device through a second delivery pipe, a pressure gauge and a first valve are disposed on the first delivery pipe, a second valve is disposed on the second delivery pipe, and a vent hole with a valve is disposed at a top end of the vertical device.
[0009] Further, the horizontal device has a first cylinder and a stirring rod, a stirring cavity is sealingly formed through first seal covers at both ends of the first cylinder, and the stirring rod is penetrated through the first seal covers and rotatably disposed in the stirring cavity; the vertical device has a second cylinder, and a holding cavity is sealingly formed through second seal covers at both ends of the second cylinder.
[0010] Further, the stirring cylinder and the vertical cylinder are both cavities made of a high-strength organic glass material.
[0011] Further, the second delivery pipe extends into a lower part of the holding cavity of the vertical device.
[0012] Further, a vertical height of a connection of the first delivery pipe on the horizontal device is greater than a vertical height of a connection of the second delivery pipe on the horizontal device.
[0013] Further, the horizontal device is fixedly disposed on a bottom supporting seat.
[0014] According to a second aspect of the present disclosure, there is provided a method of performing a test by using the simulation device for evaluating concrete pouring quality according to the first aspect of the present disclosure. The method is performed through the following steps.
[0015] At step S, the first valve and the second valve are closed, the valve of the vent hole is opened, material is poured into the horizontal device according to a designed concrete blending ratio, a total mass M of the material is recorded, and the hatch is closed.
[0016] At step S2, the concrete is fully stirred by rotating the stirring rod in the horizontal device.
[0017] At step S3, the vacuum pump is started, and the first valve on the first delivery pipe and the second valve on the second delivery pipe are opened, so as to transport the concrete from the horizontal device to the vertical device under pressure; when the concrete in the vertical device submerges 50cm of the second delivery pipe, the second delivery pipe is lifted with the lifting velocity v recorded, and a pressure value P of the delivery process is recorded by using the pressure gauge at the same time, and the entire concrete grouting process is recorded by using a high-definition camera.
[0018] At step S4, when the delivery of the concrete in the horizontal device is completed, the vacuum pump is turned off, the first valve and the second valve are closed, and a volume V of the concrete in the vertical device is recorded.
[0019] At step S5, a photo of the concrete surface is taken at a fixed position by using the high-definition camera upon the expiration of the curing periods of 7 days, 14 days, 28 days, 60 days and 90 days respectively, and a coarse particle area Si greater than 20 mm and a pore volume ei of the concrete with different thicknesses hi are recorded by using a picture analysis software; and a volume change amount AV of the concrete is recorded at the same time.
[0020] At step S6, parameters a and P are obtained according to test results and the following formula. nn n
SS-5)Se (e
h, Y h, Y= h, Z= 1 Z=1
[0021] At step S7, different a, p and AV are obtained by changing the pumping pressure P !0 and the lifting velocity v; when the values of a, P and AV are minimum, the corresponding pumping pressure P and lifting velocity v are taken as the optimal construction parameters for pressurized-grouting of the concrete pile.
[0022] Further, at step Sl, the filling volume of the material is controlled to be 50% of the volume of the cylinder. !5 [0023] Further, at step S1, a gap between the hatch and the horizontal device is sealed up with a glass adhesive or preservation film.
[0024] Further, at step S3, the pressure gauge on the first delivery pipe is controlled to reach 2 MPa.
[0025] Compared with the prior art, the present disclosure has the following beneficial ;0 effects.
[0026] In the present disclosure, the stirred concrete in one transparent rigid organic glass cylinder is pressed into another transparent rigid organic glass cylinder by using the pressure-controllable vacuum pump, and the coarse particle distribution uniformity, the pore volume, the filling density and the in-solidification volume shrinkage are recorded by using the high-definition camera to visually monitor the entire process of pouring and curing the press-grouting pile. Thus, the critical construction parameters, i.e. the grouting pressure and the lifting velocity, can be evaluated based on the coarse particle distribution uniformity parameter a, the pore volume parameter P, the density parameter p and the volume shrinkage parameter AV.
[0027] FIG. 1 is a structural schematic diagram of a simulation device according to an example of the present disclosure.
[0028] FIG. 2 is a photo of a concrete surface taken using a high-definition camera according to an example of the present disclosure.
[0029] FIG. 3 is a photo of a concrete surface taken using a high-definition camera according to another example of the present disclosure.
[0030] Numerals of the drawings are described as follows: 1-vacuum pump, 2-first delivery pipe, 3-first valve, 4-pressure gauge, 5-stirring rod, 6-horizontal device, 7-hatch, 8-fixing rod, 9-first seal cover, 10-bottom supporting seat, 12-second valve, 13-second delivery pipe, 14-vent hole, 15-vertical device, and 16-second seal cover.
[0031] One specific example of the present disclosure will be described in detail below in combination with accompanying drawings. However, it is to be understood that the scope of protection of the present disclosure is not limited to the specific example.
[0032] As shown in FIG. 1, the present disclosure provides a simulation device for evaluating concrete pouring quality. The simulation device includes:
[0033] a horizontal device 6, having a sealed transparent stirring cavity, where a stirring rod 5 is disposed in the stirring cavity, and a hatch 7 is disposed on a side wall of the horizontal device 6; and
[0034] a vertical device 15, having a sealed transparent holding cavity.
[0035] One side of the horizontal device 6 is connected with a vacuum pump 1 through a first delivery pipe 2, the other side of the horizontal device 6 is connected with the vertical device 15 through a second delivery pipe 13, a pressure gauge 4 and a first valve 3 are disposed on the first delivery pipe 2, a second valve 12 is disposed on the second delivery pipe 13, and a vent hole 14 with a valve is disposed at a top end of the vertical device 15.
[0036] In the above technical solution, the stirring rod 5 may perform stirring by connecting a driving device t or manually.
[0037] In a specific implementation, the horizontal device has a first cylinder and a stirring rod, a stirring cavity is sealingly formed through first seal covers at both ends of the first cylinder, and the stirring rod is penetrated through the first seal covers and rotatably disposed in the stirring cavity; the vertical device has a second cylinder, and a holding cavity is sealingly formed through second seal covers at both ends of the second cylinder.
[0038] During mounting, the first seal covers 9 with a groove and the second seal covers 16 with a groove are mounted at both ends of the corresponding device respectively. More preferably, a water-stop rubber ring may be disposed in the first seal cover 9 and the second seal cover 16 respectively to further increase sealability. A circular hole is disposed at the center of the first seal cover 9, and the stirring rod 5 is penetrated through the circular holes at the center of the first seal covers 9 and made to rotate freely in the first cylinder. Finally, a corresponding fixing rod 8 is penetrated through the corresponding seal cover, and screws at the ends of the fixing rod 8 are tightened. The fixing rod 8 may be made of a stainless material and threads are provided on the rod body of the fixing rod 8 to be mated with the screws, thereby improving the sealability of the device. A vent hole 14 with a valve is disposed on the second seal cover 16 at the top of the vertical device 15. !0 [0039] In a specific implementation, the stirring cylinder and the vertical cylinder are both cavities made of a high-strength organic glass material.
[0040] In a specific implementation, the second delivery pipe 13 extends into a lower part of the holding cavity of the vertical device 15.
[0041] In a specific implementation, a vertical height of a connection of the first delivery pipe 2 on the horizontal device 6 is greater than a vertical height of a connection of the second delivery pipe 13 on the horizontal device.
[0042] In a specific implementation, the horizontal device 6 is fixedly disposed on a bottom supporting seat 10.
[0043] The present disclosure further provides a method of performing a test by using the simulation device for evaluating concrete pouring quality as described above. The method is performed through the following steps.
[0044] At step Sl, the first valve 3 and the second valve 12 are closed, the valve of the vent hole is opened, material is poured into the horizontal device 6 according to a designed concrete blending ratio, a total mass M of the material is recorded, and the hatch is closed.
[0045] At step S2, the concrete is fully stirred by rotating the stirring rod 5 in the horizontal device 6.
[0046] At step S3, the vacuum pump 1 is started, and the first valve 3 on the first delivery pipe 2 and the second valve 12 on the second delivery pipe 13 are opened, so as to transport the concrete from the horizontal device 6 to the vertical device 15 under pressure; when the concrete in the vertical device 15 submerges 50cm of the second delivery pipe, the second delivery pipe 13 is lifted with a lifting velocity v recorded, and a pressure value P of the delivery process is recorded by using the pressure gauge 4 at the same time, and the entire concrete grouting process is recorded by using a high-definition camera.
[0047] At step S4, when the delivery of the concrete in the horizontal device 6 is completed, the vacuum pump 1 is turned off, the first valve 3 and the second valve 12 are closed, and a volume V of the concrete in the vertical device 15 is recorded.
[0048] At step S5, a photo of the concrete surface is taken at a fixed position by using the high-definition camera upon the expiration of the curing periods of 7 days, 14 days, 28 days, 60 days and 90 days respectively, and a coarse particle area Si greater than 20 mm and a pore volume ei of the concrete with different thicknesses hi are recorded by using a picture analysis software; and a volume change amount AV of the concrete is recorded at the same time.
[0049] At step S6, parameters a and pare obtained according to test results and the following formula. nn n
(S' -Y S, Y e, a' =1 , '8__i S
Yh, Yhj h, !0
[0050] At step S7, different a, P, p and AV are obtained by changing the pumping pressure P and the lifting velocity v; when the values of a, P and AV are minimum, the corresponding pumping pressure P and lifting velocity v are taken as the optimal construction parameters for pressurized grouting of the concrete pile. !5 [0051] In a specific implementation, at step Si, the filling volume of the material is controlled to 50% of the volume of the cylinder.
[0052] In a specific implementation, at step S1, a gap between the hatch 7 and the horizontal device 6 is sealed with a glass adhesive or preservation film.
[0053] In a specific implementation, at step S3, the pressure gauge 4 on the first delivery pipe 2 is controlled to reach 2 MPa.
[0054] In the above technical solution, image analysis may be performed by an open-source software Image J, which is a public image processing software based on java and developed by National Institutes of Health. Image J can display, edit, analyze, process, save and print the pictures of 8 bits, 16 bits and 32 bits, and support a plurality of formats such as TIFF, PNG, GIF, JPEG, BMP, DICOM and FITS. Image J supports an image stack function, that is, a plurality of images are stacked in the form of multiple threads in one window for parallel processing. As long as a memory permits, the Image J can open any number of images for processing. In addition to basic image operations such as zooming, rotation, warping and smoothing, the Image J can also perform image region and pixel statistics and spacing and angle calculation, establish histograms and sectional views, and perform Fourier transform.
[0055] In the traditional method of evaluating pile body quality, core drilling sampling is performed after a pile body is cured and molded. The traditional method has the following defects. 1. The core drilling sampling is small in scale, and cannot reflect the quality of the entire pile body; 2. during core drilling, the sample will be disturbed and damaged, and cannot truly reflect defects within the pile body; 3. the core drilling sampling after on-side pile formation will result in high costs, and cannot be used to perform several cross comparison tests by controlling the grouting pressure, lifting velocity and concrete blending ratio.
[0056] However, in the method of the present disclosure, firstly, the coarse particle distribution uniformity and the pore volume in the pile body may be recorded by photography and software quantitative analysis. !0 [0057] Next, a filling coefficient K=Vi/ V2may be recorded in real time by controlling and recording the volume Vi of the grouted concrete and the volumeV2 of the concrete in the organic glass cylinder.
[0058] Then, the in-solidification volume shrinkage AV of the concrete may be recorded by using a scale at a side surface of the organic glass cylinder. !5 [0059] Finally, the critical construction parameters, i.e.the grouting pressure, the lifting velocity and the concrete blending ratio may be evaluated based on the parameters disclosed by the present disclosure: the coarse particle distribution uniformity parameter a, the pore volume parameter P, the density parameter p and the volume shrinkage parameter AV.
[0060] By simulating the concrete pressurized grouting process using the device and the evaluation method of the present disclosure, the coarse particle distribution uniformity parameter a, the pore volume parameter P, the density parameter p and the volume shrinkage parameter AV can be visually monitored, the collapse of the concrete and the uniformity of the pile body can be observed in real time by taking photos, the grouting pressure can be controlled by using the vacuum pump, and the lifting velocity can be increased by controlling the delivery pipe. Therefore, the case that the concrete taken out by on-site core drilling is greatly disturbed and quite different from the real state of the concrete of the pile body is avoided; the collapse of the concrete and the uniformity of the pile body can be observed in real time; the indoor comparison of the quality of the pile body can be rapidly and accurately realized at low costs under the condition of the controlled grouting pressure and lifting velocity.
[0061] The foregoing descriptions are merely several specific examples of the present disclosure, and the examples of the present disclosure are not limited thereto. Any changes conceivable by persons skilled in the art shall fall into the scope of protection of the present disclosure.
Claims (10)
1. A simulation device for evaluating concrete pouring quality, comprising:
a horizontal device, having a sealed transparent stirring cavity, wherein a stirring rod is disposed in the stirring cavity, and a hatch is disposed on a side wall of the horizontal device; and
a vertical device, having a sealed transparent holding cavity;
wherein one side of the horizontal device is connected with a vacuum pump through a first delivery pipe, the other side of the horizontal device is connected with the vertical device through a second delivery pipe, a pressure gauge and a first valve are disposed on the first delivery pipe, a second valve is disposed on the second delivery pipe, and a vent hole with a valve is disposed at a top end of the vertical device.
2. The simulation device for evaluating concrete pouring quality according to claim 1, wherein the horizontal device has a first cylinder and a stirring rod, a stirring cavity is sealingly formed through first seal covers at both ends of the first cylinder, and the stirring rod is penetrated through the first seal covers and rotatably disposed in the stirring cavity; the vertical device has a second cylinder, and a holding cavity is sealingly formed through second seal covers at both ends of the second cylinder.
3. The simulation device for evaluating concrete pouring quality according to claim 2, wherein the stirring cylinder and the vertical cylinder are both cavities made of a high-strength organic glass material.
4. The simulation device for evaluating concrete pouring quality according to claim 1, wherein the second delivery pipe extends into a lower part of the holding cavity of the vertical device.
5. The simulation device for evaluating concrete pouring quality according to claim 1, wherein a vertical height of a connection of the first delivery pipe on the horizontal device is greater than a vertical height of a connection of the second delivery pipe on the horizontal device.
6. The simulation device for evaluating concrete pouring quality according to claim 1, wherein the horizontal device is fixedly disposed on a bottom supporting seat.
7. A method of performing a test by using the simulation device for evaluating concrete pouring quality according to claim 1, comprising the following steps:
at step Si, closing the first valve and the second valve, opening the valve of the vent hole, pouring material into the horizontal device according to a designed concrete blending ratio, recording a total mass M of the material, and closing the hatch; at step S2, fully stirring the concrete by rotating the stirring rod in the horizontal device; at step S3, starting the vacuum pump, and opening the first valve on the first delivery pipe and the second valve on the second delivery pipe to transport the concrete from the horizontal device to the vertical device under pressure; when the concrete in the vertical device submerges 50cm of the second delivery pipe, starting to lift the second delivery pipe with a lifting velocity v recorded, and recording a pressure value P of the delivery process by using the pressure gauge at the same time, and recording the entire concrete grouting process by using a high-definition camera; at step S4, when the delivery of the concrete in the horizontal device is completed, turning off the vacuum pump, closing the first valve and the second valve, and recording a volume V of the concrete in the vertical device; at step S5, taking a photo of the concrete surface at a fixed position by using the high-definition camera at the expiration of the curing periods of 7 days, 14 days, 28 days, 60 days and 90 days respectively so that an area Si of coarse particles greater than 20 mm and a pore volume ei of the concrete with different thicknesses hi are recorded by using a picture analysis software, and recording a volume change amount AV of the concrete at the same time; at step S6, obtaining parameters a and according to test results and the following formula;
(S' Y_ ,_e
at step S7, obtaining different a, P, p and AV by changing the pumping pressure P and the lifting velocity v, and taking the corresponding pumping pressure P and lifting velocity v as the optimal construction parameters for pressurized grouting of the concrete pile when the values of a, P and AV are minimum.
8. The method of evaluating concrete pouring quality according to claim 7, wherein at step Si, the filling volume of the material is controlled to 50% of the volume of the cylinder.
9. The method of evaluating concrete pouring quality according to claim 7, wherein at step Sl, a gap between the hatch and the horizontal device is sealed up with a glass adhesive or 1) preservation film.
10. The method of evaluating concrete pouring quality according to claim 7, wherein at step S3, the pressure gauge on the first delivery pipe is controlled to reach 2 MPa.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911133503.5 | 2019-11-19 | ||
| CN201911133503.5A CN110940799B (en) | 2019-11-19 | 2019-11-19 | Simulation device and method for evaluating concrete pouring quality |
| PCT/CN2020/115192 WO2021098356A1 (en) | 2019-11-19 | 2020-09-15 | Simulation device for evaluating concrete pouring quality and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020385374A1 true AU2020385374A1 (en) | 2021-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020385374A Abandoned AU2020385374A1 (en) | 2019-11-19 | 2020-09-15 | Simulation device for evaluating concrete pouring quality and method using the same |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110940799B (en) |
| AU (1) | AU2020385374A1 (en) |
| WO (1) | WO2021098356A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940799B (en) * | 2019-11-19 | 2023-01-20 | 国家电网有限公司 | Simulation device and method for evaluating concrete pouring quality |
| CN113012099B (en) * | 2021-01-27 | 2023-01-13 | 成都环境工程建设有限公司 | Reinforcing cage shape inspection system applying uniform-speed rotation |
| CN114112637B (en) * | 2021-12-10 | 2023-12-19 | 国网四川省电力公司阿坝供电公司 | Method and device for detecting concrete strength of miniature pile in peat frozen soil area |
| CN114152510B (en) * | 2021-12-28 | 2023-12-22 | 中国海洋大学 | Dynamic water grouting reinforcement model test device and test method for water-rich broken rock layer |
| CN114384233B (en) * | 2021-12-29 | 2024-04-09 | 中建商品混凝土有限公司 | Thixotropic property evaluation device and method for fresh concrete |
| CN114354451B (en) * | 2022-01-13 | 2023-08-29 | 同济大学 | Unsaturated soil high-pressure grouting test device and measurement system thereof |
| CN114577695B (en) * | 2022-01-14 | 2023-10-27 | 西安理工大学 | Device and method for monitoring evolution of pores of hydraulic concrete in alpine region before initial setting |
| CN114646755B (en) * | 2022-03-24 | 2023-04-07 | 中交四航工程研究院有限公司 | Test device for simulating field pile-forming construction of cement soil mixing pile |
| CN114705842B (en) * | 2022-06-06 | 2022-08-12 | 中建安装集团有限公司 | Simulation monitoring system and method for microbial self-repairing concrete cracks |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0751783B2 (en) * | 1990-11-01 | 1995-06-05 | 株式会社ホクコン | Construction method of the root fixing part for fixing the pile |
| CN102359072A (en) * | 2011-08-03 | 2012-02-22 | 李跃军 | Grouting quality control method and grouting quality control device for bridge prestressed pipeline based on density parameters |
| CN203475436U (en) * | 2013-09-13 | 2014-03-12 | 杭州银博交通工程材料有限公司 | Cast-in-place pile concrete pouring control system |
| CN105297787A (en) * | 2015-10-16 | 2016-02-03 | 浙江工业大学 | Method for detecting pile foundation post grouting quality by applying ultrasonic CT (Computed Tomography) technology |
| CN105527384B (en) * | 2016-01-15 | 2018-01-16 | 山东大学 | A kind of grouting simulation test device and its test method |
| CN106049557B (en) * | 2016-05-24 | 2018-06-26 | 同济大学 | Using the test method of the laboratory testing rig of simulation grout pile end follow-up grouting |
| CN106917394B (en) * | 2017-03-08 | 2018-12-14 | 河海大学 | Transparent stratified soil simulation system and its preparation method and miniature steel pipe pile grouting behind shaft or drift lining experimental rig therein and its application method |
| CN107462694A (en) * | 2017-08-16 | 2017-12-12 | 成都理工大学 | A kind of beans gravel rockfill grouting analogue means and system |
| CN108360508B (en) * | 2018-01-31 | 2020-05-01 | 浙江绿艺建设有限公司 | Construction method of cast-in-situ concrete core cement mixing pile |
| CN108613885B (en) * | 2018-03-14 | 2020-10-02 | 同济大学 | Indoor test method for simulating pile side post grouting |
| CN108316317B (en) * | 2018-04-24 | 2023-10-10 | 江苏建筑职业技术学院 | Steel pipe concrete arch frame fills analogue means |
| CN109187272A (en) * | 2018-08-28 | 2019-01-11 | 天津大学 | A kind of interior sand grouting simulation test device and its test method |
| CN109959775A (en) * | 2019-04-25 | 2019-07-02 | 郑州大学 | A kind of pressure stabilizing simulation grouting test device and its application method |
| CN110940799B (en) * | 2019-11-19 | 2023-01-20 | 国家电网有限公司 | Simulation device and method for evaluating concrete pouring quality |
-
2019
- 2019-11-19 CN CN201911133503.5A patent/CN110940799B/en active Active
-
2020
- 2020-09-15 WO PCT/CN2020/115192 patent/WO2021098356A1/en active Application Filing
- 2020-09-15 AU AU2020385374A patent/AU2020385374A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021098356A1 (en) | 2021-05-27 |
| CN110940799B (en) | 2023-01-20 |
| CN110940799A (en) | 2020-03-31 |
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