CN216978609U - Concrete durability test device under load and multi-environment factor coupling effect - Google Patents
Concrete durability test device under load and multi-environment factor coupling effect Download PDFInfo
- Publication number
- CN216978609U CN216978609U CN202220507871.2U CN202220507871U CN216978609U CN 216978609 U CN216978609 U CN 216978609U CN 202220507871 U CN202220507871 U CN 202220507871U CN 216978609 U CN216978609 U CN 216978609U
- Authority
- CN
- China
- Prior art keywords
- box
- test
- evaporimeter
- evaporator
- load
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 230000001808 coupling effect Effects 0.000 title claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 230000007613 environmental effect Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 5
- 239000011120 plywood Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 abstract description 2
- 206010016256 fatigue Diseases 0.000 description 17
- 239000000243 solution Substances 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 230000003068 static effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009661 fatigue test Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a concrete durability test device under the coupling action of load and multi-environment factors, which comprises a loading device, a test box, a refrigerating device and a control device, wherein the coupling action of the load and freeze-thaw cycle can be realized through the loading device and the refrigerating device, and various environment factors such as carbonization, salt fog and the like can be simulated through the loading device and the control device.
Description
Technical Field
The utility model relates to a concrete durability test device under the coupling action of load and multiple environmental factors.
Background
In recent years, with the development of economy, the problem of durability of concrete has been more and more emphasized. When a concrete structure is in service, the concrete structure is not only influenced by complex environmental factors, but also influenced by factors such as load and the like. For the research on the influence of load factors (including dynamic load and static load), the research on the coupling of the static load and environmental factors is more, and the research on the coupling of the dynamic load and the environmental factors is less. Meanwhile, the existing device can not realize the coupling effect of the concrete under various factors such as seawater erosion, freeze-thaw cycle, load and the like, and only can realize the coupling effect of the concrete under single factor and double factors. The deterioration of concrete under the multi-factor coupling effect is more complicated than that under the single-factor and double-factor effects, and the method is very necessary to research under the multi-factor coupling effect. At present, a test device which can couple concrete under load (particularly dynamic load) with multiple environmental factors is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the existing device, and provides a concrete durability test device under the coupling action of load and multiple environmental factors.
The loading device comprises a fatigue machine, a frame beam, an upright post, a pressurizing pressure head, a second sealing ring, a bottom support and a fatigue machine bearing platform. The fatigue machine and the pressurizing pressure head can apply different stresses to the test piece, the frame beam, the stand column, the bottom support and the fatigue machine bearing platform are used for supporting the fatigue machine, and the second sealing ring is arranged at the contact position of the pressurizing pressure head and the test box and can seal the contact position.
The box body of the test box comprises an outer plate, an inner plate, a heat insulation plate, a flexible heating plate, a handle type door cover, a first sealing ring, a temperature sensor, a humidity sensor, a gas concentration sensor, a salt spray spraying device, a bottom support, a test piece, a first evaporator, a second evaporator and a test box, wherein the inner side of the outer plate is tightly attached with a heat insulation layer, the inner side of the heat insulation layer is tightly attached with the evaporator, the inner side of the evaporator is tightly attached with the flexible heating plate, the inner plate is tightly attached with the flexible heating plate, the evaporators on the left side and the right side of the box body are the first evaporator, the evaporator on the top of the box body is the second evaporator, the temperature sensor and the humidity sensor are arranged in the test box, the gas concentration sensor and the salt spray spraying device are arranged on the right side of the test box, the water inlet and the first water outlet are provided with a control valve, the test box is characterized in that an air inlet/outlet is formed in the left side of the front face of the test box and provided with a control valve, a handle type door cover is arranged in front of the test box, a first sealing ring is arranged around the handle type door cover, the door cover can be sealed all around when the door cover is closed, the test box is arranged inside the test box and comprises a bottom support and a second water outlet, and a test piece is placed on the bottom support of the test box.
The refrigerating device comprises a compressor, a process pipe orifice, a drying filter, a condenser, a first evaporator, a second evaporator, a capillary tube, an air inlet pipe, an air return pipe and a heat dissipation box. The utility model discloses a test box, including compressor, condenser, dry filter, capillary connection test box, condenser, air return pipe, be connected with the technology mouth of pipe on the compressor, the compressor passes through intake-tube connection to the condenser, dry filter connects the capillary, the condenser, dry filter and capillary all are located the test box at the back heat dissipation incasement, dispel the heat through the condenser, capillary connection test box's first evaporimeter, interconnect between first evaporimeter and the second evaporimeter, first evaporimeter between test box left and right sides inner plating and outer plywood, the second evaporimeter is between test box top inner plating and outer plywood, first evaporimeter connect the muffler, the muffler is connected to the compressor, can realize the inside cooling of test box.
The control device comprises a temperature and humidity control panel (controlling a refrigeration system, a flexible heating plate and a temperature and humidity sensor) and a gas concentration/salt mist control panel (controlling the gas/salt mist concentration).
In the above technical solution, preferably, the loading device is a corrosion-resistant device, and is made of stainless steel plated with chromium, and the outer side of the stainless steel is coated with an anticorrosive paint.
In the above technical solution, preferably, the flexible heating plate is arranged between the inner plate and the evaporator.
In the above technical solution, preferably, the evaporators are all plate evaporators.
In the above technical solution, preferably, the support at the bottom of the sample box can slide.
Compared with the existing test device, the utility model has the beneficial effects that:
the structure is simple, the operation is convenient, the testing device is automatically controlled by the control system, and the precision and the automation degree are higher. The test device can simulate the real service environment of concrete, can simulate various different environmental conditions really, realize the concrete durability test under load and the coupling effect of multiple environmental factors, including load (dynamic load, static load), freeze-thaw cycle, dry-wet cycle, carbonization, salt fog. During the test, different environmental factors can be selected to carry out the durability test of the concrete under the coupling action of the load and the multi-environmental factors.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is an enlarged view of the utility model at B;
in the figure, 1, a fatigue machine, 2, a frame beam, 3, a water inlet, 4, a first water outlet, 5, a sample box, 6, a compressor, 7, a process pipe orifice, 8, a second evaporator, 9, an outer plate, 10, a heat insulation plate, 11, a first evaporator, 12, a flexible heating plate, 13, an inner plate, 14, an air inlet/outlet, 15, a temperature and humidity sensor, 16, a capillary tube, 17, a handle type door cover, 18, a drying filter, 19, a first sealing ring, 20, a pressurizing pressure head, 21, a second sealing ring, 22, a condenser, 23, a control device, 24, a gas concentration sensor, 25, a salt spray device, 26, a test piece, 27, a bottom support, 28, a second water outlet, 29, a fatigue machine bearing platform, 30 stand columns, 31, a heat dissipation box, 32, a gas return pipe and 33 air inlet pipes are arranged.
Detailed Description
For better understanding and implementation, the present invention is further described below with reference to the following specific examples and the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions based on the examples are still within the scope of the present invention as claimed in the device claims.
The device is particularly applied to a concrete durability test device under the coupling action of load and multiple environmental factors in a laboratory, and comprises a loading device, a test box, a refrigerating system and a control device.
Referring to fig. 1, 2 and 3, the loading device comprises a fatigue machine 1, a frame beam 2, a column 30, a pressurizing pressure head 20 and a bottom support 27, and is a device for applying dynamic load or static load to the fatigue machine, a second sealing ring 21 is used for sealing a position where a test box is contacted with the fatigue machine, and a fatigue machine bearing platform 29 for supporting the test box. In addition, the fatigue machine is additionally provided with a control system which can control the opening or closing of the loading device. The pressure head 20 of the driving testing machine is used for loading the action and the static load on the test piece; the digital control system mainly comprises a high-precision force sensor and a displacement sensor, is used for collecting data when a load is applied, displaying the data through a computer and recording the data (displacement and force).
II, refer to fig. 1, 2, 3, 4, refrigerating plant includes compressor 6, technology mouth of pipe 7, condenser 22, first evaporimeter 11, second evaporimeter 8, capillary 16, dry filter 18, heat dissipation case 31, condenser 22 and dry filter 18 and capillary 16 are located the radiating box body of experimental box body rear side, pass through intake pipe 33 entering condenser 22 with gas through the compressor, gaseous through condenser 22 get into capillary 16 and the dry filter 18 that link to each other with it and produce the cold fluid, the cold fluid is through first evaporimeter 11, second evaporimeter 8, the inside heat of absorption test case, realize experimental inside cooling, the inside flexible heating board 12 that contains of test case, can realize the inside intensification of test case. By adopting the mode, the temperature in the test chamber can be well controlled, and the control device 23 can realize the freeze-thaw cycle in the test chamber by controlling the refrigerating device and the flexible heating plate switch.
III, refer to fig. 1, 2, 3 and 4, the inside sample box 5, the second evaporimeter 8, the outer plywood 9, the heated board 10, the first evaporimeter 11, flexible heating board 12, the inner plating 13, advance/gas outlet 14, water inlet 3, first delivery port 4, second delivery port 28, salt fog sprinkler 25, gas concentration sensor 24, the test piece 26, temperature, humidity transducer 15, handle formula door closure 17 to and the first sealing washer 19 around the switch door.
The control device 23 comprises a temperature and humidity control panel and a gas concentration/salt spray control panel.
Example (b): freezing and thawing cycle, fatigue load and Cl in severe cold marine environment-And (3) carrying out concrete durability test under the combined action of multiple factors of corrosion (simulating the durability of marine concrete in a severe cold environment).
Step 1: and determining the size of the test box and the internal sample box and the external size of the test box according to the size of the concrete required by the test. The concrete test piece (the test piece size adopted in the current time is 100mm multiplied by 400mm) which is subjected to standard maintenance for 24d and is presoaked for 4d in a saline solution (the NaCl solution with the concentration of 3.5% is adopted in the current time) is placed in a test piece box in the test box by opening the handle type door cover.
Step 2: the distance of adjustment pressurization pressure head and bottom support through the water inlet, adds the antifreeze into the proof box, and the antifreeze height is no longer than the height of the inside sample case of proof box, adds the salt solution (this adopts concentration to be 3.5% NaCl solution) to the inside sample case of proof box, and the complete submergence concrete test piece of solution closes handle formula door closure, sealed proof box.
And step 3: the system of the freeze thawing circulation adopts' generalAccording to a quick freezing method in the test method standard for long-term performance and durability of concrete (GB/T50082-2009), a refrigeration system, a control device and a loading system are adjusted respectively according to specific implementation modes I, II and III, and then the loading device is started to perform a coupling test. The test adopts a 30kN fatigue testing machine, the loading waveform of the fatigue test adopts sine waves, the frequency of the fatigue testing machine is selected to be 10Hz, the fatigue load stress level is controlled to be sigmaf/σmax＝0.5，σmin/σmax0.1. The test applies 200 ten thousand fatigue cycles to different test pieces, if the concrete test piece passes 2X 106And (4) after the secondary fatigue cycle times, the test is stopped, and the fatigue failure times of different test pieces are recorded.
And 4, step 4: and after the specified age is reached, taking out the concrete test block, recording the force and displacement data, and repeating the operation steps until the final test is finished.
And 5: and after the test is finished, closing all the control systems in sequence, taking out the concrete sample from the test box body, opening the first water outlet in sequence, and discharging the antifreezing solution and the NaCl solution from the second water outlet respectively.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a concrete durability test device under load and the coupling of multiple environmental factor, it includes loading device, proof box, refrigerating plant and controlling means, its characterized in that: the loading device comprises a fatigue machine, a frame beam, a stand column, a pressurizing pressure head, a second sealing ring, a bottom support and a fatigue machine bearing platform, wherein the fatigue machine and the pressurizing pressure head can apply different stresses to a test piece, the frame beam, the stand column, the bottom support and the fatigue machine bearing platform are used for supporting the fatigue machine, the second sealing ring is arranged at the contact position of the pressurizing pressure head and a test box and can seal the contact position, a box body of the test box comprises an outer plate, an inner plate, a heat insulation plate, a flexible heating plate, a handle type door cover, a first sealing ring, a temperature sensor, a humidity sensor, a gas concentration sensor, a salt spray device, the bottom support, the test piece, a first evaporator, a second evaporator and a test box, a heat insulation layer is tightly attached to the inner side of the outer plate, an evaporator is tightly attached to the inner side of the heat insulation layer, and a flexible heating plate is tightly attached to the inner side of the evaporator, the flexible heating plate is tightly attached with an inner plate, evaporators on the left side and the right side of the box body are first evaporators, an evaporator on the top of the box body is a second evaporator, a temperature sensor and a humidity sensor, a gas concentration sensor and a salt spray spraying device are arranged in the test box, a water inlet and a first water outlet are arranged on the right side of the test box, a control valve is arranged on the water inlet and the first water outlet, an air inlet and an air outlet are arranged on the left side of the front side of the test box, a handle type door cover is arranged in front of the test box, a first sealing ring is arranged around the handle type door cover, when the door cover is closed, the door cover can be sealed all around, the test sample box is arranged in the test box and comprises a bottom support and a second water outlet, a test piece is placed on the bottom support of the test box, the refrigerating device comprises a compressor, the technical pipe orifice, the dry filter, the condenser, first evaporimeter, the second evaporimeter, the capillary, the intake pipe, the muffler, the heat dissipation case, be connected with the technical pipe orifice on the compressor, the compressor passes through intake-tube connection to condenser, dry filter is connected to the condenser, dry filter connects the capillary, condenser, dry filter and capillary all are located the heat dissipation case at proof box back, dispel the heat through the condenser, the first evaporimeter in the capillary connection proof box, interconnect between first evaporimeter and the second evaporimeter, first evaporimeter between proof box left and right sides inner plating and outer plywood, the second evaporimeter is between proof box top inner plating and outer plywood, first evaporimeter connect the muffler, the muffler is connected to the compressor, can realize the inside cooling of proof box, the control device comprises a temperature and humidity control panel and a gas concentration/salt spray control panel.
2. The device for testing the durability of the concrete under the coupling action of the load and the multi-environment factors according to claim 1, wherein: the flexible heating plate is arranged between the inner plate and the evaporator.
3. The device for testing the durability of the concrete under the coupling action of the load and the multi-environment factors according to claim 2, wherein: the evaporators are all plate evaporators.
4. The device for testing the durability of the concrete under the coupling action of the load and the multi-environment factors according to claim 3, wherein: the sample box bottom support can slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220507871.2U CN216978609U (en) | 2022-03-09 | 2022-03-09 | Concrete durability test device under load and multi-environment factor coupling effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220507871.2U CN216978609U (en) | 2022-03-09 | 2022-03-09 | Concrete durability test device under load and multi-environment factor coupling effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216978609U true CN216978609U (en) | 2022-07-15 |
Family
ID=82359232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220507871.2U Expired - Fee Related CN216978609U (en) | 2022-03-09 | 2022-03-09 | Concrete durability test device under load and multi-environment factor coupling effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216978609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486512A (en) * | 2022-03-09 | 2022-05-13 | 东北林业大学 | Concrete durability test device under load and multi-environment factor coupling effect |
-
2022
- 2022-03-09 CN CN202220507871.2U patent/CN216978609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486512A (en) * | 2022-03-09 | 2022-05-13 | 东北林业大学 | Concrete durability test device under load and multi-environment factor coupling effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020192294A1 (en) | Dry-wet cycle simulation testing device and method for tidal zone and splash zone of concrete | |
| WO2022222389A1 (en) | Structural fatigue/durability experimental system and method in complex environment | |
| CN205404299U (en) | Can simulate test piece mechanical properties's under freeze thawing temperature load proof box and device | |
| CN216978609U (en) | Concrete durability test device under load and multi-environment factor coupling effect | |
| CN104913979B (en) | A kind of corrosion-inhibiting coating high temperature high voltage resistant benchmark test device and test method | |
| CN104614304B (en) | A kind of salt spray test device | |
| CN110057593B (en) | Salt fog sensitivity test device for aero-engine | |
| CN110095337A (en) | The chamber of test specimen mechanical property under a kind of analog freeze thawing temperature loading | |
| CN105588801A (en) | Concrete seawater environment dry-wet cycle test device | |
| CN114486512A (en) | Concrete durability test device under load and multi-environment factor coupling effect | |
| CN111024604A (en) | Corrosion and scaling experiment detection system and method for geothermal water heat exchange process | |
| CN112798515A (en) | Equipment for simulating corrosion resistance of hydraulic cylinder in marine climate and seawater environment | |
| CN105628512A (en) | Test box and system capable of simulating mechanical property of test piece under freeze-thaw temperature load | |
| CN216247650U (en) | Device for simulating corrosion and fatigue coupling of component | |
| CN117760950A (en) | Gas-ocean atmosphere high-temperature environment simulation device | |
| CN205374258U (en) | Dam concrete anti carbon dioxide under water corrodes performance testing device | |
| CN102521678B (en) | A kind of liquid petroleum product storage life prediction platform and method | |
| CN209379011U (en) | A kind of experimental box for simulating low-temp low-pressure environment | |
| CN202216892U (en) | Device for simulating accelerated corrosion of power material in the presence of multiple mediums | |
| CN114858693A (en) | Asphalt concrete aging test device under multi-factor coupling effect | |
| CN101587116B (en) | Large-scale low-temperature geotechnical simulation test system | |
| CN114999682B (en) | Passive residual heat hydraulic test device and method for polar environment nuclear power device | |
| CN105203448A (en) | Testing device and method for simulating solar water heater inner barrel accelerated corrosion | |
| CN217277742U (en) | Concrete freeze-thaw test device under coupling effect of multiple environmental factors | |
| CN114414203A (en) | Test bed for submerged jet cleaning process of heat transfer pipe of condenser and test method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |