CN109540760A - A kind of polyurea coating infiltration performance test method - Google Patents
A kind of polyurea coating infiltration performance test method Download PDFInfo
- Publication number
- CN109540760A CN109540760A CN201811325011.1A CN201811325011A CN109540760A CN 109540760 A CN109540760 A CN 109540760A CN 201811325011 A CN201811325011 A CN 201811325011A CN 109540760 A CN109540760 A CN 109540760A
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- polyurea coating
- test specimen
- inlet
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 87
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008595 infiltration Effects 0.000 title claims abstract description 22
- 238000001764 infiltration Methods 0.000 title claims abstract description 22
- 238000011056 performance test Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 224
- 238000012360 testing method Methods 0.000 claims abstract description 114
- 239000000463 material Substances 0.000 claims abstract description 78
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims description 27
- 239000005060 rubber Substances 0.000 claims description 25
- 239000004567 concrete Substances 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention discloses a kind of polyurea coating infiltration performance test method, the permeance property for the polyurea coating infiltration performance test device test material being made of water inlet system, test specimen, temperature control system, outlet system and pedestal can be passed through in conjunction with polyurea coating material characteristics and application environment.The case where this method specifically consists of three parts, first part: after simulation polyurea coating applying material, maintenance are completed, temperature is room temperature, the outer high pressure water in non-water-filling in tunnel, tunnel, the capacity of water for bearing hydraulic pressure of test polyurea coating material；Second part: temperature is adjusted using temperature-controlled cabinet；Part III: after simulation polyurea coating applying material, maintenance are completed, temperature at normal temperature, water-filling in tunnel, the outer high pressure water in tunnel, and tunnel internal water pressure is greater than the situation outside tunnel.This method has the characteristics that scheme is simple, easy to operate, experimental result data is reliable, is of great significance to the tunnel waterproofing engineering for using polyurea materials.
Description
Technical field
The present invention relates to barrier coat material properties test field, in particular to a kind of polyurea coating infiltration performance is surveyed
Method for testing.
Background technique
The two-wire Large-scale High-Pressure water-conveyance tunnel that yellow tunnel is shield construction is worn, using novel pre-stressed composite double layer lining cutting
Structure is separated between inside and outside lining by drainage blanket, is independently worked；Outer lining is assembling type steel reinforced concrete tunnel segment structure, interior
Lining is cast-in-situ prestressed concrete structure.Yellow tunnel anchorage slot position is worn in tunnel abutment wall, surface casting concrete newly pours mixed
Cyclic annular construction joint is formed between solidifying soil and former concrete leads to part construction joint table due to the drying shrinkage sex differernce of new-old concrete
Face in the form of sheets, dotted infiltration.To ensure that Engineering Through the Yellow River long-term safety is run, construction joint need to be carried out at chemical grouting anti-seepage reinforcing
Reason.To further strengthen sealing anti-seepage effect, construction joint need to carry out polyurea coating material surface painting after Chemical Grouting Treatment again
Cover Seal treatment.Due to wearing with low temperature, moist environmental quality in yellow tunnel, to guarantee construction quality and polyurea coating material
Anti-seepage effect, it is necessary to before construction carry out polyurea coating infiltration performance test.
Polyurea elastomer application techniques be it is external in the past 10 years after high solid coating, water paint, radiation curable coating,
It is a kind of novel solvent-free for adapting to ecological requirements and developing, develop, nothing after powdery paints etc. low (nothing) pollution application techniques
The green construction technology of pollution.Polyurea elastomer application techniques, it collects plastics, rubber, coating, glass reinforced plastic multiple functions in one
Body breaches the limitation of Traditional Environmental-protection type application techniques comprehensively, is well suited as the crack repairing coating material of concrete.Engineering
Field experiment process flow are as follows: substrate concrete surface treatment → polyurea coating concrete surface protective materials system bottom material
It prepares and coating → polyurea coating concrete surface protective materials system bottom material cleaning → polyurea coating concrete surface is anti-
Protective material system surface material is prepared and coating → natural curing.As the important evaluation criteria of construction quality, waterproof requirement
Endurance issues are more prominent, and the environment of material application is complicated, and the service life basic demand of engineering 50 years, it is general to require
100 years, but the unfailing performance of its waterproof and endurance quality be there are no perfect, scientific detection method and standard, and underground work
Once there are quality problems in the waterproof of journey, it is difficult to repair, therefore engineering circles be badly in need of meeting the related detecting method of reality with
Standard.
Since polyurea coating material is in low temperature in water tunnel, in moist environment, the water delivery water flow in tunnel
Frequent impact and tunnel outside seepage action of ground water collective effect under, the Long-Term Properties of waterproof material can be generated be difficult to it is pre-
The influence of meter.The detection method of current various waterproof material performances is individual event detection, as the intensity of material, deformation and static state are low
Warm nature can wait, and not account for various factors while the combined influence for occurring, interacting in site operation and use environment, because
This cannot reflect the true waterproof performance of polyurea coating material in practical applications.
Chinese patent CN206330871U discloses a kind of for detecting the water proof apparatus of waterproof material, including pedestal, institute
The upper surface for stating pedestal is respectively equipped with station, column, spray platform and hydraulic pressure test tank, and the lower surface of pedestal is equipped with wheel carrier, wheel
The side surface of frame is equipped with service brake, and the lower surface of wheel carrier is equipped with universal wheel, is equipped with controller in the internal cavities of the station.This
For detecting the water proof apparatus of waterproof material, the combination of spray platform and hydraulic pressure test tank is used, can satisfy major part
Use demand, have very high universality, be equipped with universal wheel and service brake, moved and fixed with can be convenient, flexibility
The inside upper surface of high hydraulic pressure test tank is equipped with pressure sensor, carries out waterproof under different hydraulic pressure to waterproof material with can be convenient
The detection of performance, while the inside upper surface for spraying platform and hydraulic pressure test tank is equipped with water sensor, when detecting waterproof performance
More accurate convenience, greatly improves work efficiency.But the waterproof material permeance property test device can not provide high temperature or
Low temperature test environment, test specimen for test also without practical application when construction joint, polyurea coating material cannot be simulated in tunnel
Use environment in road, and two-way water pressure resistance performance can not be carried out to polyurea materials.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, a kind of polyurea coating infiltration performance test side is provided
Method.
The specific technical proposal of the invention is: a kind of polyurea coating infiltration performance test method, which is characterized in that packet
Include following steps:
(1) it simulates and smears polyureas painting in test specimen side after live standard construction technology is handled concrete sample surface
Layer, is conserved；
(2) the test specimen sealing after maintenance is fixed in temperature-controlled cabinet, temperature-controlled cabinet is controlled by temperature control system
For adjusting test specimen temperature, and test specimen two ends are separately connected water inlet system and outlet system carries out testing permeability, test method
Including three parts:
First part: non-water-filling in tunnel when simulation room temperature, outside tunnel the case where high pressure water；By the water inlet of water inlet system
Pressurizing device pressurization generate high pressure water by pipeline arrival test specimen position, pressurizeed with gradient and observe pressure gauge on pipeline, into
Water in water flowmeter, the numerical value of water flow table and correspondence graduated cylinder, the ability that test polyurea coating material bears hydraulic pressure are big
Small and seepage discharge；
Second part: test specimen temperature is adjusted using temperature-controlled cabinet, test polyurea coating material is at high or low temperatures
Bear the capacity of water and seepage discharge of hydraulic pressure；
Part III: it simulates water-filling in tunnel, outside tunnel be high pressure water, and tunnel internal water pressure is greater than the feelings outside tunnel
Condition；Test specimen side uses the water inlet graduated cylinder water-filling of water inlet system, the height that the test specimen other side is generated using water outlet pressurizing device pressurization
It presses water to reach polyurea coating positions of materials by pipeline, pressurizes and observe the water in the numerical value and corresponding graduated cylinder of flowmeter with gradient
Amount, test polyurea coating material bear the capacity of water and seepage discharge of hydraulic pressure.
Preferably, the water inlet system includes water inlet line and inlet tank, and water inlet line one end is placed in inlet tank, another
End is connected by right panel with test specimen side；The water inlet line is equipped with inlet valve, water inlet pressurization device at inlet tank
And inlet gage, for simulating hydraulic pressure outside tunnel；Water inlet between the water inlet pressurization device and right panel of the test device
Feed water flow scale, water inlet graduated cylinder and water inlet graduated cylinder valve are also connected on pipeline；The temperature control system by temperature-controlled cabinet,
Temperature gauge, conducting wire and temperature sensor composition, for adjusting test specimen temperature；The temperature sensor is connected to temperature by conducting wire
Spend meter；The test specimen is concrete sample, and the other side of test specimen is coated with polyurea coating material；The test specimen passes through left panel
With right panel sealed envelope in temperature-controlled cabinet；The outlet system includes outlet conduit and water tank, outlet conduit one end
Be placed in water tank, the other end on the left of left panel and test specimen by being connected, the outlet conduit is at water tank equipped with being discharged
Valve, water outlet pressurizing device and discharge pressure table, for simulating hydraulic pressure in tunnel；Between water outlet pressurizing device and the left panel
Outlet conduit on be also connected with water flow table, water outlet graduated cylinder and water outlet graduated cylinder valve；The height that pressurized device pressurization generates
Water is pressed to reach test specimen position by the pipeline in the panel of two sides.
Preferably, the test specimen is that the cylindrical type test specimen formed is combined by upper and lower two block concrete, and the test specimen outer wall is tight
Close to one layer of temperature sensor, convenient for the temperature data real-time delivery detected to temperature gauge；Two block concrete
Centre is additionally provided with crack, and the specific width in the crack can be manually set.
Preferably, rubber sheet gasket is additionally provided between the temperature-controlled cabinet and test specimen, it is long that rubber sheet gasket length is greater than test specimen
Degree is used for sealed test piece.The rubber sheet gasket is heat conductive rubber gasket, and heat transmitting between temperature-controlled cabinet and test specimen can be improved
Efficiency, the rubber sheet gasket and test specimen contact portion are evenly distributed with hollow hole, to reduce rubber sheet gasket to the shadow of heat transfer
It rings, shortens the time required for adjusting test specimen temperature.
Preferably, the temperature-controlled cabinet is cylindrical hollow shell structure, and middle part is equipped with a through-hole, for placing examination
Part；The temperature-controlled cabinet is by high temperature resistant and low temperature resistant material is made, and guarantee will not occur when being filled with high temperature or cryogenic gas
Larger deformation guarantees the leakproofness of inner test piece.
Preferably, the temperature-controlled cabinet, which can also be with the level, can be rotated cuboid case structure, and middle part is equipped with one
Through-hole is made of upper and lower two parts, and front side is equipped with air inlet for gas needed for being filled with adjusting temperature, and upper and lower two parts pass through
The hinge rotation connection being located on rear side of cabinet is put into after test specimen and passes through the through-hole of top bar under by the screw rod for being located at cabinet front
Step is corresponding to be threadedly engaged fixed test specimen, can make placement test specimen more convenient under the premise of guaranteeing that leakproofness is good.
Preferably, the left panel and right panel are equipped with the through-hole in boss and temperature-controlled cabinet and cooperate, and two pieces of panels are equal
It is mounted on the base and rubber sheet gasket cooperation seals fixed test specimen.
Compared with prior art, apparatus of the present invention have the advantage that
(1) test method is simple；(2) experimental data is reliable；(3) this test method can be directed to " polyurea coating material+apply
The thin portion structure of work seam " simulates low temperature in tunnel, moist environmental quality, makes experimental situation closer to polyurea coating material
Practical service environment guarantees the validity of experimental result.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention 1.
Fig. 2 is the floor map of temperature-controlled cabinet described in the embodiment of the present invention 1.
Fig. 3 is the structural schematic diagram of temperature-controlled cabinet described in the embodiment of the present invention 1.
Fig. 4 is the floor map of rubber sheet gasket in temperature-controlled cabinet described in the embodiment of the present invention 1.
Fig. 5 is the floor map that test specimen is tested described in the embodiment of the present invention 1.
Fig. 6 is that test specimen described in the embodiment of the present invention 1 does not smear the structural schematic diagram before polyurea coating material.
Fig. 7 is that test specimen described in the embodiment of the present invention 1 smears the structural schematic diagram after polyurea coating material as required.
Fig. 8 is a kind of structural schematic diagram of preferred temperature-controlled cabinet in the embodiment of the present invention 1.
In figure: 1, inlet tank；2, water inlet pressurization device；3, inlet gage；4, feed water flow scale；5, water inlet graduated cylinder；6,
Water inlet graduated cylinder valve；7, water inlet line；8, right panel；9, temperature gauge；10, conducting wire；11, test specimen；12, temperature sensor；
13, polyurea coating material；14, rubber sheet gasket；15, temperature-controlled cabinet；16, temperature control valve；17, left panel；18, outlet pipe
Road；19, it is discharged graduated cylinder valve；20, water flow table；21, it is discharged graduated cylinder；22, discharge pressure table；23, it is discharged pressurizing device；
24, water tank；25, crack；26, flowing water Valve；27, pedestal；28, inlet valve.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, technical solution of the present invention is clearly and completely described, it is clear that
Embodiment described herein is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Those of ordinary skill in the art's all other embodiment obtained under the conditions of not making creative work, belongs to this hair
The range of bright protection.
In the description of the present invention, it should be noted that term " centre ", "upper", "lower", "left", "right", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
Embodiment 1
As shown in figures 1-8, a kind of polyurea coating infiltration performance test method, utilizes polyurea coating infiltration performance
Test device is tested, and the test device includes water inlet system, right panel 8, temperature control system, test specimen 11, left panel
17, outlet system and pedestal 27, the water inlet system include water inlet line 7 and inlet tank 1, and 7 one end of water inlet line is placed in into water
In case 1, the other end is connected by right panel 8 with 11 side of test specimen；The water inlet line 7 is equipped with inlet valve at inlet tank 1
Door 28, water inlet pressurization device 2 and inlet gage 3, water inlet pressurization device 2 is for simulating the outer hydraulic pressure of tunnel；The temperature control
System is made of temperature-controlled cabinet 15, temperature gauge 9, conducting wire 10 and temperature sensor 12, for adjusting the temperature of test specimen 11；
The temperature sensor 12 is connected to temperature gauge 9 by conducting wire 10；The test specimen 11 is the concrete sample for having crack 25,
It is to be composed of upper and lower two block concrete；The centre of two block concrete is equipped with crack 25, the specific width in the crack 25
Angle value can need to be manually set according to experiment；The temperature-controlled cabinet 15 is shell structure；The outlet system includes water outlet
Pipeline 18 and water tank 24,18 one end of outlet conduit is placed in water tank 24, the other end passes through 11 left side of left panel 17 and test specimen
It is connected, the outlet conduit 18 is additionally provided with flowing water Valve 26, water outlet pressurizing device 23 and discharge pressure table at water tank 24
22, water outlet pressurizing device 23 is for simulating hydraulic pressure in tunnel；The high pressure water that pressurized device pressurization generates can pass through two sides
Pipeline in plate reaches test specimen position.
The polyurea coating material 13 is applied to the left side of the test specimen 11.
11 outer wall of test specimen is close to one layer of temperature sensor 12；The effect of the temperature sensor 12 is monitoring test specimen
11 surface temperature, when temperature-controlled cabinet 15 heats or refrigeration reaches certain temperature, the temperature sensor 12 is detection
The temperature data real-time delivery arrived is to temperature gauge 9.
The close connection left panel in 11 left side of test specimen, right side closely connects right panel；The test specimen 11 passes through left panel
17 and 8 sealed envelope of right panel in temperature-controlled cabinet 15；
The temperature-controlled cabinet 15 is sealed with the test specimen 11 by rubber sheet gasket 14, and the rubber sheet gasket 14 is to be uniformly distributed
The rubber sheet gasket of hollow hole；The effect of hollow hole on the rubber sheet gasket 14 is that rubber sheet gasket stops heat to pass in order to prevent
It passs；The heat of the temperature-controlled cabinet 15 can pass to the test specimen 11 by the hollow hole on rubber sheet gasket.
15 lower left of temperature-controlled cabinet is that temperature control valve 16, vapor or nitrogen are controlled by the temperature
Valve 16 enters the temperature that temperature-controlled cabinet 15 adjusts test specimen.
There is water inlet line 7 in the right panel 8, the water inlet line 7 is connected with feed water flow scale 4, inlet gage 3
With water inlet pressurization device 2；Inlet valve 28 is connected between the water inlet pressurization device 2 and the inlet gage 3.
Connection water inlet graduated cylinder 5 among the water inlet pressurization device 2 and the inlet gage 3；5 top of water inlet graduated cylinder
It is equipped with into water graduated cylinder valve 6.
There is outlet conduit 18 in the left panel 17, the outlet conduit 18 is connected with water flow table 20, discharge pressure
Table 22 and water outlet pressurizing device 23；Flowing water Valve is connected between the water outlet pressurizing device 23 and the discharge pressure table 22
26。
Water outlet graduated cylinder 21, the water outlet graduated cylinder are connected between the water outlet pressurizing device 23 and the discharge pressure table 22
21 tops are equipped with water outlet graduated cylinder valve 19.
Scheme 1: after simulation polyurea coating applying material, maintenance are completed, the feelings of the outer high pressure water of non-water-filling, tunnel in tunnel
Condition, at normal temperature, the maximum hydraulic pressure that test polyurea coating material can bear.
Step 1: the rubber sheet gasket 14 of test specimen 11 is wrapped, is put after being completed to polyurea coating applying material, maintenance
Enter in temperature-controlled cabinet 15, test specimen 11 is fixed by two sides panel.Close water inlet graduated cylinder valve 6, flowing water Valve 26, open into
Penstock 28 and water outlet graduated cylinder valve 19, empty remaining gas in temperature-controlled cabinet 15, keep the temperature in temperature-controlled cabinet 15
Degree is room temperature, and closing temperature control valve 16 checks and records temperature value shown by temperature gauge 9.
Step 2: opening water inlet pressurization device 2, it is pressurization initial value with 1MPa, makes numerical value shown in inlet gage 3 every time
It is incremented by using 1MPa as gradient and is pressurizeed, the high pressure water after pressurization reaches crack 25 through water inlet line 7, passes through crack 25 and arrives
Up to polyurea coating material 13；When the values constant shown in the inlet gage 3, after certain time of pressurizeing, flow of inlet water is observed
The numerical value change of table 4 and water flow table 20.
Step 3: proving polyurea coating material if numerical stability shown in feed water flow scale 4 and water flow table 20 is unchanged
Material 13 is not broken through by high pressure water；If numerical value shown in feed water flow scale 4 and water flow table 20 changes, observe and record out
The numerical value comparison of water yield in water cylinder 21, institute's value and water flow table 20 is maximized as seepage flow magnitude, and is remembered
Record 3 corresponding pressure value of inlet gage, as the maximum value resistant to pressure of polyurea coating material 13.
Step 4: if numerical stability shown in feed water flow scale 4 and water flow table 20 is unchanged, continue to repeat above-mentioned the
Two steps and third step operation, until high pressure water breaks through polyurea coating, the numerical value generation of feed water flow scale 4 and water flow table 20 is bright
The maximum value resistant to pressure and seepage flow magnitude of polyurea coating material 13 are measured in aobvious variation.
Scheme 2: adjusting test specimen temperature by temperature-controlled cabinet, after simulation urea coating material is smeared, maintenance is completed, tunnel
It is inside high pressure water outside non-water-filling, tunnel, at high or low temperatures, the maximum hydraulic pressure that test polyurea coating material is able to bear.
Step 1: opening temperature control valve 16, in emptying temperature-controlled cabinet 15 after residual gas, make vapor (heating)
Or nitrogen (refrigeration) continues into and adjusts test specimen temperature in temperature-controlled cabinet 15.
Step 2: the temperature value that observation temperature gauge 9 measures, if the temperature that temperature gauge 9 measures test specimen 11 reaches
To the temperature of experiment setting, then closing temperature control valve 16；Continuous observation temperature gauge 9 after closing temperature control valve 16
Numerical value change, if discovery test specimen 11 temperature change reach 1 DEG C~2 DEG C, open temperature control valve 16 and continue to be filled with control
The gas of relevant temperature processed keeps the temperature of test specimen 11 to control in the range of setting.
Step 3: the temperature if desired tested is greater than 4 DEG C, then continue embodiment 2；If desired the temperature tested be less than etc.
It in 4 DEG C, then needs to open temperature control valve, by embodiment 2 again after residual gas emptying in temperature-controlled cabinet.
Association schemes 1 and scheme 2 can simulate the case where non-water-filling, tunnel are outside high pressure water in tunnel, to test polyureas
Watertight size under maximum hydraulic pressure and highest, minimum temperature that coating material can bear at normal temperature.
Scheme 3: in order to simulate polyurea coating material under time of day by water pressures, need to carry out reversed water to it
Pressure test.After this experimental program can simulate polyurea coating applying material, maintenance is completed, at normal temperature, water-filling in tunnel,
It is high pressure water outside tunnel, and hydraulic pressure is greater than the situation outside tunnel in tunnel, to test polyurea coating material in actual application environment
In the maximum hydraulic pressure that can bear.Temperature-controlled cabinet described in this programme is rotatably rectangular parallelepiped structure with the level, such as Fig. 8
It is shown, it is put into test specimen and is more convenient, the concrete mode for adjusting temperature is identical as scheme 2.
Step 1: the test specimen rubber sheet gasket 14 for being coated with polyurea coating material is wrapped, it is put into temperature-controlled cabinet 15,
Lock temperature-controlled cabinet 15.Inlet valve 28 and water outlet graduated cylinder valve 19 are closed, water inlet graduated cylinder valve 6 and flowing water Valve are opened
26；The residual gas in temperature-controlled cabinet 15 is emptied, the temperature data of the display of temperature gauge 9, closing temperature are checked and record
Control valve 16.
Step 2: open water outlet pressurizing device 23, with 1MPa be pressurization initial value, use numerical value shown in water pressure table 22 with
1MPa, which is that gradient is incremental, to pressurize, and the high pressure water generated through the water outlet pressurization of pressurizing device 23 passes through the arrival polyureas of outlet conduit 18
Coating material 13.
Step 3: observing the number of water flowmeter 20 and feed water flow scale 4 when the values constant shown in the discharge pressure table 22
Value variation, if the numerical stability of water flow table 20 and feed water flow scale 4 is unchanged, proves after pressurization continues for some time
Polyurea coating material 13 is not broken through by high pressure water；If obvious become occurs for numerical value shown in water flow table 20 and feed water flow scale 4
Change, observes and records into water yield in water graduated cylinder 5, the numerical value comparison of institute's value and feed water flow scale 4 is maximized as infiltration
Flow value, and record 22 corresponding pressure value of discharge pressure table, as the maximum value resistant to pressure of polyurea coating material 13.
Step 4: continuing to increase water pressure if the numerical stability of water flow table 20 and feed water flow scale 4 is unchanged
Value repeats above-mentioned second step and third step operation, until high pressure water breaks through polyurea coating material 13, water flow table 20 and water inlet
Numerical value shown in flowmeter 4 changes, and measures maximum value resistant to pressure and seepage flow magnitude that polyurea coating material can bear.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of polyurea coating infiltration performance test method, which comprises the steps of:
(1) after the live standard construction technology of simulation is handled concrete sample surface, polyurea coating is smeared in test specimen side,
It is conserved；
(2) the test specimen sealing after maintenance is fixed in temperature-controlled cabinet, temperature-controlled cabinet is used for by temperature control system control
Test specimen temperature is adjusted, and test specimen two ends are separately connected water inlet system and outlet system carries out testing permeability, test method includes
Three parts:
First part: non-water-filling in tunnel when simulation room temperature, outside tunnel the case where high pressure water；By the water inlet pressurization of water inlet system
The high pressure water that device pressurization generates reaches test specimen position by pipeline, is pressurizeed with gradient and observes pressure gauge on pipeline, feed water flow
Scale, water flow table numerical value and corresponding graduated cylinder in water, test polyurea coating material bear hydraulic pressure capacity of water and
Seepage discharge；
Second part: test specimen temperature, the receiving of test polyurea coating material at high or low temperatures are adjusted using temperature-controlled cabinet
The capacity of water and seepage discharge of hydraulic pressure；
Part III: it simulates water-filling in tunnel, outside tunnel be high pressure water, and tunnel internal water pressure is greater than the situation outside tunnel；Examination
Part side uses the water inlet graduated cylinder water-filling of water inlet system, and the test specimen other side is logical using the high pressure water that water outlet pressurizing device pressurization generates
Piping reaches polyurea coating positions of materials, is pressurizeed and is observed the water in the numerical value and corresponding graduated cylinder of flowmeter with gradient, survey
Try capacity of water and seepage discharge that polyurea coating material bears hydraulic pressure.
2. a kind of polyurea coating infiltration performance test method according to claim 1, it is characterised in that: the water inlet
System includes water inlet line and inlet tank, and water inlet line one end is placed in inlet tank, and the other end passes through right panel and test specimen side
It is connected；The water inlet line is equipped with inlet valve, water inlet pressurization device and inlet gage at inlet tank, for simulating tunnel
Hydraulic pressure outside hole；Flow of inlet water is also connected on water inlet line between the water inlet pressurization device and right panel of the test device
Table, water inlet graduated cylinder and water inlet graduated cylinder valve；The temperature control system is by temperature-controlled cabinet, temperature gauge, conducting wire and temperature
Sensor composition, for adjusting test specimen temperature；The temperature sensor is connected to temperature gauge by conducting wire；The test specimen is mixed
Solidifying soil test specimen, the other side of test specimen is coated with polyurea coating material；The test specimen is by left panel and right panel sealed envelope in temperature
It spends in control cabinet；The outlet system includes outlet conduit and water tank, and outlet conduit one end is placed in water tank, the other end is logical
It crosses on the left of left panel and test specimen and is connected, the outlet conduit is equipped with flowing water Valve, water outlet pressurizing device and is gone out at water tank
Water pressure table, for simulating hydraulic pressure in tunnel；It is also connected on outlet conduit between the water outlet pressurizing device and left panel
Water flow table, water outlet graduated cylinder and water outlet graduated cylinder valve；The high pressure water that pressurized device pressurization generates passes through in the panel of two sides
Pipeline reaches test specimen position.
3. a kind of polyurea coating infiltration performance test method according to claim 2, which is characterized in that test method
First part specifically follow the steps below:
Step 1: being put into temperature-controlled cabinet after the test specimen for being coated with polyurea coating material is wrapped with rubber sheet gasket, pass through
Two sides panel fixes test specimen, closes water inlet graduated cylinder valve, flowing water Valve, opens inlet valve and water outlet graduated cylinder valve, emptying
Remaining gas in temperature-controlled cabinet, keeping the temperature in temperature-controlled cabinet is room temperature, and closing temperature control valve is checked and remembered
Record temperature value shown by temperature gauge；
Step 2: opening water inlet pressurization device, it is pressurization initial value with 1MPa, makes numerical value shown in inlet gage with 1MPa every time
It is incremented by for gradient and pressurizes, the high pressure water after pressurization reaches crack through water inlet line, passes through crack and reaches polyurea coating material
Material；When the values constant shown in the inlet gage, after certain time of pressurizeing, feed water flow scale and water flow table are observed
Numerical value change；
Step 3: proving that polyurea coating material does not have if numerical stability shown in feed water flow scale and water flow table is unchanged
It is broken through by high pressure water；If numerical value shown in feed water flow scale and water flow table changes, observe and record in water outlet graduated cylinder
The numerical value comparison of water yield, institute's value and water flow table is maximized as seepage flow magnitude, and records inlet gage pair
The pressure value answered, as the maximum value resistant to pressure of polyurea coating material；
Step 4: if numerical stability shown in feed water flow scale and water flow table is unchanged, continue to repeat above-mentioned second step and
Third step operation, until high pressure water breaks through polyurea coating, the numerical value generation significant change of feed water flow scale and water flow table is surveyed
The maximum of polyurea coating material value resistant to pressure and seepage flow magnitude out.
4. a kind of polyurea coating infiltration performance test method according to claim 2, which is characterized in that test method
Second part specific steps are as follows:
Step 1: open temperature control valve, empty in temperature-controlled cabinet after residual gas, make water heat or nitrogen continue into
Enter and adjusts test specimen temperature in temperature-controlled cabinet；
Step 2: the temperature value that observation temperature gauge measures, sets if the temperature that temperature gauge measures test specimen reaches experiment
Fixed temperature, then closing temperature control valve；The numerical value change of continuous observation temperature gauge after closing temperature control valve, if
It was found that the temperature change of test specimen reaches 1 DEG C~2 DEG C, then opens temperature control valve and continues the gas for being filled with control relevant temperature,
The temperature of test specimen is kept to control in the range of setting；
Step 3: the temperature if desired tested is greater than 4 DEG C, then continue to implement the first step；If desired the temperature tested is less than or equal to 4
DEG C, then it needs to open temperature control valve, the first step will be implemented again after residual gas emptying in temperature-controlled cabinet.
5. a kind of polyurea coating infiltration performance test method according to claim 2, which is characterized in that test method
Part III specific steps are as follows:
Step 1: being put into temperature-controlled cabinet after the test specimen for being coated with polyurea coating material is wrapped with rubber sheet gasket, lock
Temperature-controlled cabinet；Inlet valve and water outlet graduated cylinder valve are closed, water inlet graduated cylinder valve and flowing water Valve are opened；Empty temperature control
The temperature data that temperature gauge is shown, closing temperature control valve are checked and recorded to residual gas in case；
It is pressurization initial value with 1MPa step 2: opening water outlet pressurizing device, uses numerical value shown in water pressure table with 1MPa as ladder
Degree, which is incremented by, to pressurize, and the high pressure water generated through water outlet pressurizing device pressurization reaches polyurea coating material by outlet conduit；
Step 3: observing the numerical value change of water flowmeter and feed water flow scale when the values constant shown in the discharge pressure table, adding
After pressure continues for some time, if the numerical stability of water flow table and feed water flow scale is unchanged, polyurea coating material is proved
Do not broken through by high pressure water；If significant change occurs for numerical value shown in water flow table and feed water flow scale, observe and record into water
The numerical value comparison of water yield in graduated cylinder, institute's value and feed water flow scale is maximized as seepage flow magnitude, and records water outlet pressure
Power table corresponding pressure value, as the maximum value resistant to pressure of polyurea coating material；
Step 4: if the numerical stability of water flow table and feed water flow scale is unchanged, continue to increase hydraulic pressure force value, in repetition
Second step and third step operation are stated, until high pressure water breaks through polyurea coating material, number shown in water flow table and feed water flow scale
Value changes, and measures maximum value resistant to pressure and seepage flow magnitude that polyurea coating material can bear.
6. according to claim 1 to a kind of 5 described in any item polyurea coating infiltration performance test methods, feature exists
In: the test specimen is that the cylindrical type test specimen formed is combined by upper and lower two block concrete, and test specimen outer wall is close to one layer of temperature sensing
Device；Crack is additionally provided among two block concrete, the specific width in the crack can be manually set.
7. according to claim 1 to a kind of 5 described in any item polyurea coating infiltration performance test methods, feature exists
In: it is sealed between the temperature-controlled cabinet and test specimen by rubber sheet gasket, rubber sheet gasket length is greater than piece lengths；It is described
Rubber sheet gasket is that heat conductive rubber gasket or the rubber sheet gasket and test specimen contact portion are equipped with equally distributed hollow hole.
8. according to claim 1 to a kind of 5 described in any item polyurea coating infiltration performance test methods, feature exists
In: the temperature-controlled cabinet is cylindrical hollow shell structure, and middle part is equipped with a through-hole for placing test specimen；The temperature control
Case is by high temperature resistant and low temperature resistant material is made；The temperature-controlled cabinet is additionally provided with temperature control valve.
9. according to claim 1 to a kind of 5 described in any item polyurea coating infiltration performance test methods, feature exists
In: the temperature-controlled cabinet is rotatably cuboid case structure with the level, and middle part is equipped with a through-hole, by upper and lower two parts group
At, front side be equipped with air inlet for be filled with adjust temperature needed for gas, upper and lower two parts pass through the hinge that is located on rear side of cabinet
Rotation connection, is put into that the through-hole for passing through top bar by the screw rod for being located at cabinet front after test specimen is corresponding with getting out of a predicament or an embarrassing situation to be threadedly engaged
Fixed test specimen.
10. according to claim 1 to a kind of 5 described in any item polyurea coating infiltration performance test methods, feature exists
In: the left panel and right panel are equipped with the through-hole in boss and temperature-controlled cabinet and cooperate, and two pieces of panels are installed on pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325011.1A CN109540760B (en) | 2018-11-08 | 2018-11-08 | Method for testing permeability of polyurea coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325011.1A CN109540760B (en) | 2018-11-08 | 2018-11-08 | Method for testing permeability of polyurea coating material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109540760A true CN109540760A (en) | 2019-03-29 |
| CN109540760B CN109540760B (en) | 2021-06-08 |
Family
ID=65845104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811325011.1A Active CN109540760B (en) | 2018-11-08 | 2018-11-08 | Method for testing permeability of polyurea coating material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109540760B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286078A (en) * | 2019-07-31 | 2019-09-27 | 招商局重庆交通科研设计院有限公司 | A kind of tunnel rhegma liner structure percolating water property testing system |
| CN110927039A (en) * | 2019-11-29 | 2020-03-27 | 大连理工大学 | Device for detecting leakage performance of material in high-low temperature cycle mode and detection method thereof |
| CN114235593A (en) * | 2021-12-16 | 2022-03-25 | 河海大学 | Hydraulic building high-molecular waterproof coating hydraulic pressure bonding failure test device and test method |
| US11435280B2 (en) * | 2017-12-11 | 2022-09-06 | James Joseph Spiegel | Substrate seal test method and apparatus |
| CN115015105A (en) * | 2022-06-02 | 2022-09-06 | 西南交通大学 | Method and device for testing bonding performance of waterproof material under hydrothermal coupling effect |
| CN115078220A (en) * | 2022-06-30 | 2022-09-20 | 西南交通大学 | Device and method for testing impermeability of waterproof material under hydrothermal coupling effect |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393100A (en) * | 2008-11-04 | 2009-03-25 | 中国矿业大学(北京) | Ventilation property test method and device for hypergolic coal waste pile isolating layer |
| US20110143620A1 (en) * | 2009-12-11 | 2011-06-16 | Huisheng Wu | Chemical Resistant Ionomers and Protective Coverings |
| JP2012018015A (en) * | 2010-07-06 | 2012-01-26 | Central Res Inst Of Electric Power Ind | Bedrock sample permeability testing method |
| CN102841020A (en) * | 2012-09-06 | 2012-12-26 | 中国水利水电科学研究院 | Test model and method for simulating capacity of resisting cracking caused by high-pressure water of flexible impermeable material |
| CN102841045A (en) * | 2012-08-24 | 2012-12-26 | 中国石油天然气集团公司 | Impervious barrier permeability coefficient detection device and method |
| JP2016172983A (en) * | 2015-03-17 | 2016-09-29 | 株式会社Act | Structure |
| JP2017072489A (en) * | 2015-10-08 | 2017-04-13 | 国立大学法人徳島大学 | Air permeability measurement method and air permeability measurement apparatus |
| CN206330871U (en) * | 2016-11-03 | 2017-07-14 | 贵州圣元防水材料有限公司 | A kind of water proof apparatus for being used to detect waterproof material |
| CN107356512A (en) * | 2017-08-31 | 2017-11-17 | 重庆卡勒斯通科技有限公司 | Temperature becomes Under Concrete hydrostatic osmotic pressure test device |
| JP2018016015A (en) * | 2016-07-29 | 2018-02-01 | 富士フイルム株式会社 | Laminate, optical film, polarizing plate protective film, polarizing plate, and image display device |
| CN108195734A (en) * | 2017-12-04 | 2018-06-22 | 浙江海洋大学 | Measure the device of crude oil storage tank ground impervious clay infiltration coefficient |
-
2018
- 2018-11-08 CN CN201811325011.1A patent/CN109540760B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393100A (en) * | 2008-11-04 | 2009-03-25 | 中国矿业大学(北京) | Ventilation property test method and device for hypergolic coal waste pile isolating layer |
| US20110143620A1 (en) * | 2009-12-11 | 2011-06-16 | Huisheng Wu | Chemical Resistant Ionomers and Protective Coverings |
| JP2012018015A (en) * | 2010-07-06 | 2012-01-26 | Central Res Inst Of Electric Power Ind | Bedrock sample permeability testing method |
| CN102841045A (en) * | 2012-08-24 | 2012-12-26 | 中国石油天然气集团公司 | Impervious barrier permeability coefficient detection device and method |
| CN102841020A (en) * | 2012-09-06 | 2012-12-26 | 中国水利水电科学研究院 | Test model and method for simulating capacity of resisting cracking caused by high-pressure water of flexible impermeable material |
| JP2016172983A (en) * | 2015-03-17 | 2016-09-29 | 株式会社Act | Structure |
| JP2017072489A (en) * | 2015-10-08 | 2017-04-13 | 国立大学法人徳島大学 | Air permeability measurement method and air permeability measurement apparatus |
| JP2018016015A (en) * | 2016-07-29 | 2018-02-01 | 富士フイルム株式会社 | Laminate, optical film, polarizing plate protective film, polarizing plate, and image display device |
| CN206330871U (en) * | 2016-11-03 | 2017-07-14 | 贵州圣元防水材料有限公司 | A kind of water proof apparatus for being used to detect waterproof material |
| CN107356512A (en) * | 2017-08-31 | 2017-11-17 | 重庆卡勒斯通科技有限公司 | Temperature becomes Under Concrete hydrostatic osmotic pressure test device |
| CN108195734A (en) * | 2017-12-04 | 2018-06-22 | 浙江海洋大学 | Measure the device of crude oil storage tank ground impervious clay infiltration coefficient |
Non-Patent Citations (1)
| Title |
|---|
| 孙志恒等: "单组分聚脲在水利水电工程中的应用前景", 《全国水工混凝土建筑物修补与加固技术交流会》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11435280B2 (en) * | 2017-12-11 | 2022-09-06 | James Joseph Spiegel | Substrate seal test method and apparatus |
| CN110286078A (en) * | 2019-07-31 | 2019-09-27 | 招商局重庆交通科研设计院有限公司 | A kind of tunnel rhegma liner structure percolating water property testing system |
| CN110927039A (en) * | 2019-11-29 | 2020-03-27 | 大连理工大学 | Device for detecting leakage performance of material in high-low temperature cycle mode and detection method thereof |
| CN114235593A (en) * | 2021-12-16 | 2022-03-25 | 河海大学 | Hydraulic building high-molecular waterproof coating hydraulic pressure bonding failure test device and test method |
| CN114235593B (en) * | 2021-12-16 | 2024-04-19 | 河海大学 | Hydraulic bond damage test device and test method for high molecular waterproof coating of hydraulic building |
| CN115015105A (en) * | 2022-06-02 | 2022-09-06 | 西南交通大学 | Method and device for testing bonding performance of waterproof material under hydrothermal coupling effect |
| CN115078220A (en) * | 2022-06-30 | 2022-09-20 | 西南交通大学 | Device and method for testing impermeability of waterproof material under hydrothermal coupling effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109540760B (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109540760A (en) | A kind of polyurea coating infiltration performance test method | |
| CN104777089B (en) | Road surface material permeability test system under multi-field coupling condition | |
| CN105717027B (en) | A kind of rock permeability test equipment of simulation underground deep rock mass environment | |
| CN206546242U (en) | Rubber seal rings for seal device for detecting performance | |
| CN107121371A (en) | A kind of simulation laboratory test system and method suitable for layer of sand osmotic grouting | |
| CN108982327A (en) | A kind of damage concrete permeability detection device | |
| CN111610129B (en) | Multi-working condition porous medium permeability coefficient determination method and testing device | |
| CN105738220A (en) | Pipe piece elastic sealing gasket water tightness testing method considering soil body influences | |
| CN109540761A (en) | A kind of polyurea coating infiltration performance test device | |
| CN102353624A (en) | Plastic concrete permeability test device and its test method | |
| CN109060543A (en) | Directly measure the device and its measurement method of triaxial test rubber-oil-pipe sensor amount | |
| CN207585705U (en) | A kind of can monitor in real time is poured by the device of note medium grouting amount | |
| CN102692370B (en) | Method and device for testing in-situ pressure osmosis of coating | |
| CN108195739B (en) | Pressure-controlled seepage test mechanism and seepage time measuring device | |
| CN101700677A (en) | Rapid curing process and device of centrifugal ductile cast iron pipe cement lining | |
| CN210427566U (en) | Three-dimensional visual infiltration slip casting model test device | |
| CN212228680U (en) | Porous medium permeability coefficient's under multiplex condition testing arrangement | |
| CN101769834B (en) | Test chamber for radon exhalation rate in soil | |
| CN206710265U (en) | A kind of impervious mechanism for testing of building casting concrete | |
| CN105021507A (en) | Field detection device of gas permeability coefficient of bridge structural concrete and application method thereof | |
| CN201589732U (en) | Soil radon exhalation rate test cabin | |
| CN214096982U (en) | Multi-factor coupling simulation test device for service performance of permeable pavement | |
| CN106198298A (en) | A kind of negative pressure water absorber of material | |
| CN104155428A (en) | Polluted soil shear penetration test device | |
| CN115200999A (en) | Rock fracture through device in simulated tunnel excavation process and testing method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |