CN111766188A - Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition - Google Patents
Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition Download PDFInfo
- Publication number
- CN111766188A CN111766188A CN202010380301.7A CN202010380301A CN111766188A CN 111766188 A CN111766188 A CN 111766188A CN 202010380301 A CN202010380301 A CN 202010380301A CN 111766188 A CN111766188 A CN 111766188A
- Authority
- CN
- China
- Prior art keywords
- test piece
- steel disc
- permeability
- cylinder
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 33
- 230000035699 permeability Effects 0.000 title claims abstract description 33
- 230000006835 compression Effects 0.000 title claims abstract description 17
- 238000007906 compression Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 84
- 239000010959 steel Substances 0.000 claims abstract description 84
- 238000012360 testing method Methods 0.000 claims abstract description 82
- 239000007789 gas Substances 0.000 claims abstract description 36
- 238000011156 evaluation Methods 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 10
- 239000003292 glue Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000012466 permeate Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Fluid Mechanics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a single-shaft compression concrete permeability evaluation device under a high-temperature condition, which comprises a support and an upper steel disc, wherein the upper steel disc is positioned on a test piece, a load loading device is arranged on the upper steel disc, a spiral heater is arranged on the side surface of the test piece, a heat insulation layer is arranged outside the spiral heater, a lower steel disc is arranged below the test piece, the lower steel disc and the upper steel disc are sealed with the test piece through a high-temperature sealing glue layer, an air inlet channel is arranged on the upper steel disc, an air outlet channel is arranged on the lower steel disc, the air inlet channel is communicated with an inert gas cylinder, the air outlet channel is communicated with a gas pressure gauge, and thermocouples are arranged on the upper steel disc and. The invention adopts the specially designed hollow cylindrical test piece and the steel disc clamping device, so that gas can permeate from the inside to the outside of the test piece for permeability measurement, a sealing cylinder does not need to be arranged outside the test piece, and the test piece can be directly heated through the spiral heating ring, thereby realizing the online determination of the permeability of the uniaxial compression concrete under the high-temperature condition.
Description
Technical Field
The invention relates to a device and a method for evaluating the permeability of uniaxial compression concrete under a high-temperature condition, and belongs to the field of concrete testing.
Background
The concrete material is widely used in engineering construction, and has high economical efficiency, good plasticity and high pressure resistance. It has been found that at higher temperatures, such as in the case of fire, poorly permeable concrete is prone to explosive spalling of the concrete layer. Explosive spalling is a very severe form of concrete failure characterized by cracking and strong separation of concrete fragments, accompanied by typically loud explosive noises. Such damage can greatly reduce the safety of the reinforced concrete structure. Therefore, it is necessary to directly measure the permeability of the concrete material under pressure at high temperature, which is important for simulating and understanding the performance of the concrete structure in special environments such as fire.
The difficulty in measuring the permeability of concrete or performing a gas injection test on a concrete test piece at high temperature is high, and in the conventional permeability measurement test method, high-temperature gas is injected from one end of a cylinder body loaded with a cylindrical test piece, and then gas flowing out from the other end of the cylinder is measured. However, in this process, the test piece is heated by the high-temperature gas, the heating effect is not obvious, and uneven heating inside the test piece may occur. On the other hand, it must be ensured that the gas passes through the test piece during this process, and the core problem is how to seal the test piece, since the sealing performance directly determines the accuracy of the experimental results. One method is to fill the sealing material between the entire side of the cylinder and the inner wall of the outer cylinder, which makes the test preparation very cumbersome; another method is to put the test piece into a material such as a sealing rubber sleeve and press the test piece tightly to achieve similar effects, but this method is not suitable for high temperature conditions. These solutions often result in a very complex structure of the device and also in difficulties in achieving a truly high temperature environment. Therefore, a simple and effective device is needed to be designed, so that the state of the compressed concrete in a high-temperature environment can be simulated more truly, and the permeability of the compressed concrete can be measured accurately.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the uniaxial compression concrete permeability evaluation device under the high-temperature condition, which can be used for carrying out concrete permeability determination tests under different temperatures and stress states under the high-temperature and uniaxial compression conditions, has a reasonable structure, greatly simplifies the operation, and solves the problems of poor high-temperature simulation effect and complicated test operation of the conventional device.
The technical scheme is as follows: in order to solve the technical problem, the single-shaft compression concrete permeability evaluation device under the high-temperature condition comprises a support and an upper steel disc, wherein the upper steel disc is positioned on a test piece, a load loading device is arranged on the upper steel disc, a spiral heater is arranged on the side surface of the test piece, a heat insulation layer is arranged outside the spiral heater, a lower steel disc is arranged below the test piece, the lower steel disc, the upper steel disc and the test piece are sealed through a high-temperature sealing glue layer, an air inlet channel is arranged on the upper steel disc, an air outlet channel is arranged on the lower steel disc, the air inlet channel is communicated with an inert gas cylinder, the air outlet channel is communicated with a gas pressure gauge, the test piece is hollow, and thermocouples are arranged on the upper steel disc and the.
Preferably, the load loading device comprises a movable plate and a single-shaft loading system, the movable plate is mounted at the top end of the support, a load sensor is mounted below the movable plate, the load sensor is mounted on the upper steel disc, and the single-shaft loading system is located above the movable plate.
Preferably, the unipolar loading system includes support girder steel and hydraulic pump, go up the support girder steel and fix on the support, the hydraulic pump is fixed on supporting the girder steel, and the hydraulic pump is used on the movable plate.
Preferably, the outer diameters of the upper steel disc and the lower steel disc are larger than the outer diameter of the test piece, high-temperature sealing glue is completely coated on the upper contact surface and the lower contact surface of the upper steel disc and the lower steel disc with the test piece, and the thickness of the high-temperature sealing glue is 1 mm.
Preferably, after the device is installed, the test piece is heated to a specified temperature, then a certain amount of gas is filled into the test piece, the air pressure outside and inside the test piece is measured, after the device is stood for a period of time, the air pressure inside the test piece is measured again, the permeability of the test piece at high temperature is measured by measuring the change of the air pressure difference inside the test piece, and the permeability is as follows:
wherein k [ m ]2]Is the permeability, η is the viscosity of the permeating gas, p1For the gas pressure, p, injected into the interior of the cylinder2Is the pressure outside the cylinder, i.e. atmospheric pressure, V is the volume of the hollow cylinder, r1Is the internal diameter of the cylinder, r2Is the cylinder outside diameter, H is the hollow cylinder height, Δ p1Is the variation of the internal air pressure of the internal cylinder within a certain time interval deltat.
Test piece and clamping device: the test piece of the device is a specially arranged hollow cylinder test piece, and the clamping device comprises an upper steel disc and a lower steel disc. A channel is arranged in the steel disc, so that gas in the hollow cylinder can enter and exit from the channel. The test piece is clamped between two steel discs, the upper and lower steel discs being aligned with the center of the test piece. And high-temperature sealant is coated between the steel disc and the concrete test piece.
A gas injection system: the pipeline is connected with the middle through hole of the upper metal disc and the lower metal disc in the clamping device.
A temperature control system: the device is used for heating the concrete sample and realizing temperature control, and simultaneously avoids heat loss in the surrounding environment.
And the axial compression loading system is used for loading axial compression on the concrete clamping system.
The gas injection system includes: a gas container, a gas pressure gauge, for gas input and gas pressure measurement; and the gas conveying pipeline is used for conveying gas.
The device for evaluating the permeability of the uniaxial compression concrete under the high-temperature condition is characterized in that in the test piece and the clamping system thereof, the outer diameter of the hollow steel disc is larger than that of the test piece, and high-temperature sealant is completely coated on the upper contact surface and the lower contact surface of the steel disc and the test piece, and the thickness of the sealant is 1 mm.
The single-shaft compression concrete permeability evaluation device under the high-temperature condition comprises a temperature control system and a pressure sensor, wherein the temperature control system comprises: a spiral heating ring, a thermocouple, a temperature regulator and a heat insulation block. The spiral heating ring surrounds the surface of the test piece and can directly heat the test piece. The thermocouples are respectively arranged on the upper steel disc, the lower steel disc and the test piece and used for measuring the temperature of the test piece, the temperature detector is connected with the temperature regulator, and the temperature controller can be used for adjusting the spiral heating ring to realize temperature control. The insulating heat preservation block sets up in the outside of spiral heating ring and upper portion of going up steel coil and lower steel coil lower part for reduce the dissipation of heat to the surrounding environment.
The single-shaft compression concrete permeability evaluation device under the high-temperature condition comprises a single-shaft loading system and a single-shaft loading system, wherein the single-shaft loading system comprises: the device comprises an upper support steel beam, a lower support steel beam, a movable plate, a corresponding number of stud bolts, pressure-bearing nuts and load sensors; and a hydraulic cylinder and a tracking pump are arranged between the lower supporting steel beam and the movable plate.
Has the advantages that: compared with the prior art, the device provided by the invention adopts the specially designed hollow cylindrical test piece and the steel disc clamping device, so that gas can permeate from the inside to the outside of the test piece for permeability measurement, the sealing problem of the device is greatly simplified, a sealing cylinder body is not required to be arranged outside the test piece, the test piece can be directly heated through the spiral heating ring, and the online measurement of the permeability of the uniaxial compression concrete under the high-temperature condition is realized.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a moving plate 1, a load sensor 2, an upper heat-insulating block 3, an upper steel plate 4, a thermocouple 5, a side heat-insulating block 6, a spiral heating ring 7, a lower steel plate 8, a temperature regulator 9, a lower heat-insulating block 10, a gas pressure gauge 11 and an inert gas cylinder 12.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the single-shaft compression concrete permeability evaluation device under the high-temperature condition comprises a support and an upper steel disc 4, wherein the upper steel disc 4 is positioned on a test piece, a load loading device is arranged on the upper steel disc 4, a spiral heater is arranged on the side surface of the test piece, a heat insulation layer is arranged outside the spiral heater, a lower steel disc 8 is arranged below the test piece, the lower steel disc 8 and the upper steel disc 4 are sealed with the test piece through a high-temperature sealing glue layer, an air inlet channel is arranged on the upper steel disc 4, an air outlet channel is arranged on the lower steel disc 8 and is communicated with an inert gas cylinder 12, the air outlet channel is communicated with a gas pressure gauge 11, the test piece is hollow, and thermocouples are arranged on the upper steel disc 4 and the lower steel disc 8.
In the invention, the load loading device comprises a moving plate 1 and a single-shaft loading system, wherein the moving plate 1 is installed at the top end of a bracket, a load sensor is installed below the moving plate 1, the load sensor is installed on an upper steel disc 4, and the single-shaft loading system is located above the moving plate 1. The unipolar loading system is including supporting girder steel and hydraulic pump, it fixes on the support to go up the support girder steel, and the hydraulic pump is fixed on supporting the girder steel, and the hydraulic pump is used in movable plate 1. The outer diameters of the upper steel disc 4 and the lower steel disc 8 are larger than the outer diameter of the test piece, high-temperature sealant is completely coated on the upper contact surface and the lower contact surface of the upper steel disc 4 and the lower steel disc 8 and the test piece, and the thickness of the sealant is 1 mm.
In the invention, the spiral heating ring 7 is arranged on the outer side of the test piece to directly heat the test piece, the thermocouple 55 and the spiral heating ring 7 are connected with the temperature regulator 9, the thermocouple 5 measures the temperature of the steel disc to reflect the temperature of the test piece and transmits a signal to the temperature regulator 9, and the temperature regulator 9 can regulate the on and off of the spiral heating ring 7 according to the signal. The heat preservation contains heat preservation piece 3, lower heat preservation piece 10 and side heat preservation piece 6, insulates against heat to clamping device, avoids in too much heat transfer to the surrounding environment.
In the invention, gas enters the hollow cylinder test piece through the inert gas cylinder 12 and a guide pipe connected with the inert gas cylinder through a gas passage in the upper steel disc 4 to form gas pressure, and the gas pressure enters the gas pressure gauge 11 through the gas passage and the guide pipe in the lower steel disc 8 to be measured. The clamping device and the heat preservation block as main bodies are carried on the lower supporting plate, the upper part of the clamping device and the heat preservation block applies compression load through a hydraulic cylinder arranged on the moving plate 1, and the load can be adjusted through signals fed back by the load sensor 2.
In the invention, after the device is installed, a test piece is heated to a specified temperature, then a certain amount of gas is filled into the test piece, the air pressure outside and inside the test piece is measured at the same time, after the device is kept stand for a period of time, the air pressure inside the test piece is measured again, and the permeability of the test piece at high temperature is measured by measuring the change of the air pressure difference inside the test piece, wherein the permeability is as follows:
wherein k [ m ]2]Is the permeability, η is the viscosity of the permeating gas, p1For the gas pressure injected into the interior of the cylinder, i.e. the internal pressure at which the initial system operates, p2Is the pressure outside the cylinder, i.e. atmospheric pressure, V is the volume of the hollow cylinder, r1Is the internal diameter of the cylinder, r2Is the outer diameter of the cylinder, i.e. the outer diameter of the test piece, H is the height of the hollow cylinder, Δ p1Is the variation of the internal air pressure of the internal cylinder within a certain time interval deltat.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a unipolar pressurized concrete permeability evaluation device under high temperature condition which characterized in that: including support and last steel disc, it is located the test piece to go up the steel disc, upward be equipped with load loading device on the steel disc, install spiral heater at the side surface of test piece, be equipped with the heat preservation outside spiral heater, the steel disc is installed down to the below of test piece, lower steel disc and last steel disc pass through high temperature sealant layer with the test piece and seal, be equipped with inlet channel on last steel disc, be equipped with outlet channel on the steel disc down, inlet channel and inert gas jar intercommunication, outlet channel and gas pressure gauge intercommunication, the test piece is the cavity form, install the thermocouple on last steel disc and lower steel disc.
2. The apparatus for evaluating the permeability of a uniaxial compressive concrete under a high temperature condition according to claim 1, wherein: the load loading device comprises a movable plate and a single-shaft loading system, the movable plate is mounted at the top end of the support, a load sensor is mounted below the movable plate, the load sensor is mounted on the upper steel disc, and the single-shaft loading system is located above the movable plate.
3. The apparatus for evaluating the permeability of a uniaxial compressive concrete under a high temperature condition according to claim 1, wherein: the single-shaft loading system comprises a supporting steel beam and a hydraulic pump, the supporting steel beam is fixed on the support, the hydraulic pump is fixed on the supporting steel beam, and the hydraulic pump acts on the movable plate.
4. The apparatus for evaluating the permeability of a uniaxial compressive concrete under a high temperature condition according to claim 1, wherein: the outer diameters of the upper steel disc and the lower steel disc are larger than that of the test piece, high-temperature sealant is completely coated on the upper contact surface and the lower contact surface of the upper steel disc and the lower steel disc and the test piece, and the thickness of the sealant is 1 mm.
5. An evaluation method of the uniaxial compression concrete permeability evaluation device under high temperature conditions according to any one of claims 1 to 4, characterized in that after the device is installed, the test piece is heated to a specified temperature, then a certain amount of gas is filled into the test piece, the air pressures outside and inside the test piece are measured at the same time, after standing for a period of time, the air pressure inside the test piece is measured again, and the permeability of the test piece under high temperature conditions is measured by measuring the change of the air pressure difference inside the test piece, wherein the permeability is:
wherein k [ m ]2]Is the permeability, η is the viscosity of the permeating gas, p1For the gas pressure, p, injected into the interior of the cylinder2Is the pressure outside the cylinder, i.e. atmospheric pressure, V is the volume of the hollow cylinder, r1Is the internal diameter of the cylinder, r2Is the cylinder outside diameter, H is the hollow cylinder height, Δ p1Is the variation of the internal air pressure of the internal cylinder within a certain time interval deltat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380301.7A CN111766188A (en) | 2020-05-08 | 2020-05-08 | Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380301.7A CN111766188A (en) | 2020-05-08 | 2020-05-08 | Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111766188A true CN111766188A (en) | 2020-10-13 |
Family
ID=72720488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010380301.7A Pending CN111766188A (en) | 2020-05-08 | 2020-05-08 | Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111766188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362551A (en) * | 2020-10-29 | 2021-02-12 | 中国三峡建设管理有限公司 | Indoor convenient determination method and system for permeability of compact rock |
| CN114279936A (en) * | 2021-12-29 | 2022-04-05 | 西南石油大学 | Dynamic permeability testing device and method in oil and gas well cement slurry solidification process |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221111A (en) * | 2007-01-12 | 2008-07-16 | 中国石油大学(北京) | Testing method and device for anisotropic permeability |
| CN104749044A (en) * | 2015-04-02 | 2015-07-01 | 北京科技大学 | Thermo-hydro-mechanical (THM) coupling simulation experiment system and use method thereof |
| CN104897554A (en) * | 2015-07-02 | 2015-09-09 | 中国石油大学(华东) | Low permeability rock gas permeation test device and method under air and heat coupling effect |
| CN204789257U (en) * | 2015-06-11 | 2015-11-18 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock damage degree testing arrangement |
| CN105067494A (en) * | 2015-07-10 | 2015-11-18 | 中国矿业大学 | Permeability testing method and device based on radial percolation experiment |
| CN207779863U (en) * | 2018-01-25 | 2018-08-28 | 葛洲坝集团试验检测有限公司 | A kind of concrete permeability experimental rig |
| CN208736781U (en) * | 2019-03-11 | 2019-04-12 | 江苏城工建设科技有限公司 | A kind of no lateral confinement measuring gas permebility device |
| CN110231270A (en) * | 2019-06-05 | 2019-09-13 | 东南大学 | A kind of concrete gas radial penetration performance test device and method |
| CN209606285U (en) * | 2019-03-13 | 2019-11-08 | 程彦 | A kind of torus plastic concrete permeability coefficient detection device |
-
2020
- 2020-05-08 CN CN202010380301.7A patent/CN111766188A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221111A (en) * | 2007-01-12 | 2008-07-16 | 中国石油大学(北京) | Testing method and device for anisotropic permeability |
| CN104749044A (en) * | 2015-04-02 | 2015-07-01 | 北京科技大学 | Thermo-hydro-mechanical (THM) coupling simulation experiment system and use method thereof |
| CN204789257U (en) * | 2015-06-11 | 2015-11-18 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock damage degree testing arrangement |
| CN104897554A (en) * | 2015-07-02 | 2015-09-09 | 中国石油大学(华东) | Low permeability rock gas permeation test device and method under air and heat coupling effect |
| CN105067494A (en) * | 2015-07-10 | 2015-11-18 | 中国矿业大学 | Permeability testing method and device based on radial percolation experiment |
| CN207779863U (en) * | 2018-01-25 | 2018-08-28 | 葛洲坝集团试验检测有限公司 | A kind of concrete permeability experimental rig |
| CN208736781U (en) * | 2019-03-11 | 2019-04-12 | 江苏城工建设科技有限公司 | A kind of no lateral confinement measuring gas permebility device |
| CN209606285U (en) * | 2019-03-13 | 2019-11-08 | 程彦 | A kind of torus plastic concrete permeability coefficient detection device |
| CN110231270A (en) * | 2019-06-05 | 2019-09-13 | 东南大学 | A kind of concrete gas radial penetration performance test device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362551A (en) * | 2020-10-29 | 2021-02-12 | 中国三峡建设管理有限公司 | Indoor convenient determination method and system for permeability of compact rock |
| CN112362551B (en) * | 2020-10-29 | 2024-03-08 | 中国三峡建设管理有限公司 | Indoor convenient determination method and system for permeability of tight rock |
| CN114279936A (en) * | 2021-12-29 | 2022-04-05 | 西南石油大学 | Dynamic permeability testing device and method in oil and gas well cement slurry solidification process |
| CN114279936B (en) * | 2021-12-29 | 2023-09-15 | 西南石油大学 | Device and method for testing dynamic permeability in solidification process of cement slurry of oil and gas well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107748110B (en) | Microcomputer-controlled electro-hydraulic servo rock triaxial dynamic shear seepage coupling test method | |
| CN110160885B (en) | Experimental device and method for measuring permeability of low-permeability coal rock under multi-field coupling effect | |
| CN104007013A (en) | Test device for chemical solution seepage in rock single fracture at different temperatures | |
| CN105806890B (en) | Characteristic Parameters of Coal Spontaneous Combustion measurement device based on load pressuring method | |
| CN111766188A (en) | Device and method for evaluating permeability of uniaxial compression concrete under high-temperature condition | |
| CN110082201B (en) | Material delayed fracture test method under high-pressure hydrogen-doped natural gas environment | |
| WO2020244256A1 (en) | Device and method for testing radial gas permeability of concrete | |
| CN110749626A (en) | Device and method for measuring initial and final setting time of cement paste at high temperature and high pressure | |
| CN104777058A (en) | Measurement device and method for free expansion volume of coal rock adsorption | |
| CN101308074B (en) | High-temperature high pressure oil quality characteristic measuring apparatus and measurement method | |
| CN111504800A (en) | Multifunctional micro-sample testing system and method, petrochemical industry and nuclear power equipment | |
| CN204314001U (en) | Pipe flange stress monitoring system under Moments effect | |
| CN102590016A (en) | Soil moisture characteristic curve measurement device and measurement method thereof | |
| CN105158115A (en) | Transient measurement apparatus for convective heat transfer and pressure drop in porous material | |
| CN111855527A (en) | Damaged concrete gas permeability detection device and method | |
| CN114518294A (en) | Cement sheath sealing capability evaluation device | |
| CN114965079A (en) | Method for measuring fracture parameters of coal rock mass I under action of supercritical carbon dioxide | |
| CN209148501U (en) | Rock Biot coefficient experimental provision is tested under a kind of confining pressure-temperature action | |
| US4723442A (en) | High-temperature, high-shear capillary viscometer | |
| CN109323662B (en) | Device for controlling temperature of inner surface and outer surface of annular cladding and measuring deformation of annular cladding in high-temperature environment | |
| CN112903740A (en) | Device and method for measuring thermal expansion coefficient of rock under confining pressure | |
| Pei et al. | Thermo-Triax: an apparatus for testing petrophysical properties of rocks under simulated geothermal reservoir conditions | |
| CN110118690B (en) | High-pressure hydrogen-doped natural gas environment material performance damage evaluation device | |
| CN115248177B (en) | Method and device for measuring breakthrough pressure of low-permeability rock based on optical fiber sensing | |
| CN113758850B (en) | Flexible wall permeameter for realizing temperature-stress integrated control under dry-wet circulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201013 |