CN105910970A - Concrete impermeability test method and test apparatus thereof - Google Patents
Concrete impermeability test method and test apparatus thereof Download PDFInfo
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- CN105910970A CN105910970A CN201610223488.3A CN201610223488A CN105910970A CN 105910970 A CN105910970 A CN 105910970A CN 201610223488 A CN201610223488 A CN 201610223488A CN 105910970 A CN105910970 A CN 105910970A
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- concrete
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- 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
Abstract
The invention provides a concrete impermeability test method and a test apparatus thereof. The test method comprises the following steps: fixedly connecting one end of a pre-embedded pressure leading tube with a concrete sample through pouring, connecting the other end of the pre-embedded pressure leading tube with a water tube, allowing pressure water to go through the pre-embedded pressure leading tube and to enter test concrete, and determining the water pressure of the water tube, which is the test pressure, when water infiltrates from the periphery of the concrete sample. The invention also relates to the concrete impermeability test apparatus. The method and the apparatus are adopted to carry out concrete sample impermeability test without sealing the sample, so the problem of difficult sealing between the sample and a frame test mold in the concrete sample impermeability test process is solved, the success rate of impermeability tests is improved, the operating flow is simplified, the test time is shortened, the water seepage path is visually reflected, and the practicality of an impermeability tester in engineering is improved.
Description
Technical field
The present invention relates to detection method and the detection device of concrete impermeability, specifically a kind of concrete
Impervious detection method and detection device thereof.
Background technology
Water-tight concrete be widely used in waterwork, under water, in water, underground and other have seepage resistance demand
Architectural engineering (such as dam concrete, tunnel support concrete, subway supporting concrete etc.).
The structure and working principle of existing concrete Anti-leakage instrument:
Such as the existing concrete impervious instrument of HP-4.0 type, it it is the pipeline utilizing sealing container to communicate therewith connection
The pressure principle (head carelessness is disregarded) of system, presses with water pump, and passes through intelligent numerical control
Table keeps pressure to carry out the detection device tested within the limits prescribed.Main by frame die trial, separation
Device, water pump, water tank and electrical control gear composition.
Frame die trial: frame uses shaped steel to be welded, spreads the thick steel plate pallet of 1.5mm above,
Die trial receptacle dish is fixed in frame by the bolt of M10, uses six die trials, logical between die trial and die trial
The bolt crossing M12 is connected, and middle " O " shape rubber ring seals, and specimen enclosure is in die trial
Among, and fasten with special allen wrench.
Separator: separator is valve and a backwater valve to be concentrated and be placed in before instrument, mainly
Controlling the logical of six sample water routes or cut-off, backwater valve is in order to reduce pressure.
Water pump: water pump is with 90W motor as power source, by the two poles of the earth gear shift, drives eccentric shaft rotation
Turn, ordered about that plunger is reciprocating to be operated the most again by guide pillar and connecting rod.Flow due to water pump
The least, therefore can think that the hydraulic pressure of supply sample is static state approx.
Water tank: water tank is the container of water storage, and play the percussion that slows down of press water, logical before detection
Cross water filling nozzle and inject water in water tank, after test, water in tank is drained by the nozzle that discharges water.
Electrical control instrument: be used for controlling water pump pressurization.
Test procedure is:
1, sample shapes maintenance: the material mixture ratio required according to design, with finishing die (also known as secondary mould,
Specification size is identical with frame die trial) make shaping, then carry out maintenance by specification；
2, heating: in the previous day of test, sample is taken out from fog room, be heated to together with die trial
About 40 DEG C, and be heated to melt completely by the wax closed, then sample circumference is rolled one in the solution
In week (sample both ends of the surface forbid there is wax), the sample forcing press speckling with wax is pressed into die trial；
3, pour water: the nut of water filling nozzle is backed out, open each valve simultaneously, funnel is placed in water filling
On nozzle, pour water in water tank, treat that it is filled, and (effect is row to be also filled with water in requiring die trial chassis
Air except in pipe-line system) at this moment the valve that six lead to die trial can be shut；
4, die trial is installed: dress is sealed the die trial of sample, be reliably packed on testing stand；
5, test: complete, such as by new criteria 24 hours: engine request test block pressurization 0.8MPa, under
Limit is set as 0.6MPa, constant voltage after 8 hours lower limit automatic boosting be 0.7MPa, then constant voltage 8 hours,
Lower limit automatic boosting is 0.8MPa, complete after 8 hours.When the end face of six samples has three to present pressure
Power water penetration out time, write down the hydraulic pressure now force value as test.
At present, the detection of water-tight concrete anti-permeability performance according to being " normal concrete long-term behaviour and durable
Method for testing performance standard " (GB-T50082-2009), although related specifications has been carried out for many years, but
The anti-permeability performance of detection water-tight concrete remains a great problem, and detection concrete impermeability difficulty is big,
The consuming time is long, and success rate is the highest.
The subject matter of existing concrete Anti-leakage instrument has:
1, due between frame die trial and sample Sealing period long, seal process is complicated, seals the most tired
Difficulty, therefore it cannot be guaranteed that fully seal between sample and frame die trial when detecting, press water when causing test
May ooze out from the space, sealing interval between sample and frame die trial, although causing test failure or test
Success, but there is occasionality.
2, owing to permeating road Jing in the sample (now for press water in process of the test or after having tested
There is permeameter to be not excluded for water from sealant upper end near sample end face, infiltrate into coagulation from weak concrete layer
Soil surface false phenomenon of osmosis) observation difficulty, need from frame die trial, take out sample, and put
The path that press water permeates in the sample, whole mistake is observed after forcing press is uniformly split into two halves sample
Journey operation complexity, thereby increases the operation easier of test, fragile sample in specimen of riving.
3, due to process of the test needs until infiltration occurs in the 3rd sample end face could termination test,
The infiltration of termination test may be poor because of the interval sealing effectiveness between frame die trial and sample, forms infiltration logical
, there is infiltration illusion, thus cause in the cause of disease couplings such as road and sample top end face local concrete comb pitted skin
Impermeability test result distortion.
In order to solve sealing problem, the Chinese patent of Application No. 201510332201.6 " seals infiltration
Device and use the full-automatic concrete Anti-leakage instrument of sealing device " in disclose and a kind of seal permeability apparatus,
Including the seal sleeve that sealed base is suitable with concrete sample shape, sealed base arranges first
The lower end of locking mechanism and seal sleeve is also provided with the second locking mechanism matched with the first locking mechanism,
When seal sleeve is buckled on sealed base, the cooperation by the first locking mechanism, the second locking mechanism is real
Existing seal sleeve and the locking of sealed base.But this sealing permeability apparatus still continues to use traditional test side
Formula, surrounds concrete sample from outside, uses seal sleeve, sealed base and locking mechanism locking.
But this apparatus structure is complicated and sealing reliability uncertain.
Situation based on above-mentioned prior art, in order to solve the infiltration problem of press water, needs existing anti-
Oozing property tester is optimized and improves.
Summary of the invention
It is an object of the invention to: provide a kind of without sealing, simple to operate, success of the test rate can be improved
Impermeability test method for concrete and assay device.
To achieve these goals, the present invention is by the following technical solutions:
Specifically comprising the following steps that of a kind of impermeability test method for concrete
Step one: test specimen shapes
Pre-buried pressure guiding pipe one end is placed in finishing die；By the concreting of test in finishing die, in advance
Bury the pressure guiding pipe other end to draw from the concrete upper end poured；After maintenance, remove finishing die, pre-buried impulse
Pipe is integrally formed with concrete, forms concrete sample；
Step 2: install test specimen
It is connected with water pipe from the other end of the pre-buried pressure guiding pipe of concrete extraction；
Pass through step
Step 3: test
Opening aqueduct valve, press water enters in test concrete by pre-buried pressure guiding pipe, when having water from mixed
Out, now the hydraulic pressure of water pipe is the force value of test to the infiltration of ambient of solidifying soil test specimen.
The impermeability test method for concrete of the present invention keep existing specification " normal concrete long-term behaviour and
Endurance quality test method standard " (GB-T50082-2009) about the essence of impermeability test, testing machine
On the premise of there is not material alterations in reason, the test method broken traditions, use brand-new test thinking.
Owing to concrete sample has good sealing, thus without to concrete sample heating, sealing wax, saving
Omit the sealing schedule of die trial and sample, substantially avoid owing in process of osmosis, press water can not erect easily
To penetrating concrete sample and therefore from the sealing area space between concrete sample and frame die trial
Enter top, cause the occasionality of test failure.
Test method of the present invention is simple to operate, and press water enters in concrete sample along pre-buried pressure guiding pipe,
Due to the air-tightness good with sample, thus without sealing, when oozing occurs in the surrounding observing concrete sample
Time permeable, write down hydraulic pressure now, be the force value of test, improve success of the test rate and water seepage road
Footpath reflection is directly perceived.The present invention is the stability of guarantee test, and preferred approach is by three the inventive method systems
The other end of the pre-buried pressure guiding pipe of standby concrete sample is connected with water pipe by valve respectively；Open 3
Aqueduct valve, press water respectively enters in test concrete by pre-buried pressure guiding pipe, mixes from 2 when there being water
Out, now the hydraulic pressure of water pipe is the force value of test to the infiltration of ambient of solidifying soil test specimen.Needed for the present invention
The concrete sample quantity wanted decreased 1/2nd more in the past, saved test period.
Observe around concrete sample, occur that press water infiltrates when concrete sample has two
Time, write down hydraulic pressure now, be the force value of test,
The inventive method is further improved, above-mentioned steps one, and pre-buried pressure guiding pipe is placed on finishing die
Interior one end is funnel-form, and the uncovered lower end of funnel is in advance with test concrete enclosing.
Above-mentioned concrete sample is provided with funnel shaped pre-buried pressure guiding pipe, can at utmost ensure press water
Uniformly can be spread in concrete sample, it is ensured that press water energy uniformly penetrating sample.In advance will test
Uncovered with concrete setting closing funnel, can avoid pre-buried pressure guiding pipe when pouring, the concrete poured
Being entered in pre-buried pressure guiding pipe by funnel opening end, blocked by caliber, press water cannot pass through pre-buried impulse
Pipe enters concrete sample, causes test failure.
The inventive method is further improved, above-mentioned steps two, is inverted by concrete sample and is fixed on
Being placed with on the workbench of interim catch basin, the pre-buried pressure guiding pipe other end sequentially passes through downwards interim catch basin
After workbench, connecting water pipe.
From concrete sample infiltration of ambient water out when interim catch basin is for collecting test, can keep
Workbench cleaning, clean and tidy and raising safety.
By the concrete impermeability test device obtained by said method step of the present invention, including pre-buried impulse
Pipe one end constitutes concrete sample by pouring to be connected with concrete sample one；The pre-buried pressure guiding pipe other end
It is connected with water pipe.Preferably mode is the position, one end that described pre-buried pressure guiding pipe is connected with concrete sample one
Core in concrete sample.
Further improving is that anti-leakage detector for water also includes the interim water-retention placed on the table
Groove；Described concrete sample is connected with workbench (or falsework), and the described pre-buried pressure guiding pipe other end
After sequentially passing through downwards interim catch basin and workbench, connecting water pipe.During test, water pressure impact force is relatively big,
Being fixed by test specimen, beneficially test is smoothed out, and safer.Preferred construction be pre-buried pressure guiding pipe another
After end sequentially passes through downwards interim catch basin and workbench, the exit top of pre-buried pressure guiding pipe is by fastening
Part is connected with workbench, exit bottom connecting water pipe.
Further improve and be, one end that the pre-buried pressure guiding pipe of anti-leakage detector for water is cast in concrete
In funnel-form, the uncovered upper surface of funnel is provided with the pre-experiment concrete enclosing layer poured.Above-mentioned closing
Layer preferably structure is first the uncovered upper surface of funnel to be provided with layer of metal net, wire netting pours examination
Test and use concrete mortar barrier film.Can avoid when pouring test concrete mortar barrier film, mortar enters
In funnel, block pipeline.
Further improving and be: in said apparatus, (i.e. center leads in described pre-buried pressure guiding pipe minimum-value aperture
Water hole) it is φ 2～4mm, limbers is used for guiding current, forms passage, due to φ 2～4mm aperture
Smaller, the flow of water is the least, can think that the hydraulic pressure of test specimen is static state approx.
Further improve and be: in said apparatus, described test concrete is φ 300mm*300mm
Cylinder, the described a length of 200mm of pre-buried pressure guiding pipe, concrete is inserted in one end of pre-buried pressure guiding pipe
A length of 150mm, the uncovered a diameter of φ 60mm of funnel, enclosed layer thickness is 10mm.
Said structure so that the degree of depth of sample core (i.e. at test pressure water out) to surrounding is all
150mm, meets impermeability test regulation, ensure that the press water uniform diffusion in sample simultaneously.Test
Time be more convenient for observe press water permeation pathway, have press water to ooze out i.e. when observing to have around test specimen at one
The valve of water pipe can be closed.
The impermeability test method for concrete of the present invention and device, improve the success rate of impermeability test and impervious
Tester practicality in engineering.
Present invention omits space between existing Anti-leakage instrument frame die trial uses paraffin to seal and existing impervious
The sealing device that instrument is sufficiently complex.When solving concrete impermeability test concrete sample and frame die trial it
Between seal difficulty problem, improve success rate and the practicality in engineering of the impermeability test instrument of impermeability test
Property；Owing to without sealing, saving encapsulant, test procedure is simpler, enormously simplify operation
Flow process, the sample that test uses greatly reduces, and shortens test period and saves experimentation cost；Can
Directly observing the infiltration situation of concrete sample, the reflection of infiltration path is directly perceived；Owing to concrete sample is provided with
Pre-buried pressure guiding pipe, the pre-buried pressure guiding pipe other end was both mixed by the entrance as press water that is directly connected with water pipe
The passage of solidifying soil sample core, again can be through the preformed hole of work top, by concrete sample and work
Table top is connected, and the operation making concrete sample be fixed on testing machine is the most more convenient, and concrete
Fixing without shell of sample, reduces the cost of test apparatus, has saved experimentation cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the face upwarding view of Fig. 1.
Fig. 4 is the structural representation of the pre-buried pressure guiding pipe of the present invention.
Fig. 5 is that the test specimen of the present invention pours forming frock schematic diagram.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the upward view of Fig. 5.
In figure: 1, concrete sample；2, pre-buried pressure guiding pipe；3, interim catch basin；4, workbench；
5, securing member；6, uncovered；7, straight tube pipe；8, mortar barrier film；9, wire netting；10, connect
Bolt；11, pre-buried pressure guiding pipe endoporus；12, pre-buried pressure guiding pipe polishing section；13, bolt；14, test specimen
Finishing die；15, test specimen finishing die base；16, steel disc；17, screw；18, screw hole
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Fig. 1～7, specifically comprising the following steps that of test method of the present invention
Step one: test specimen shapes maintenance
1, pre-buried pressure guiding pipe is prepared:
Pre-buried pressure guiding pipe 2 structure as shown in Figure 4, pre-buried pressure guiding pipe overall length 200mm, in funnel shaped,
Being made up of with straight tube pipe 7 funnel uncovered 6, uncovered 6 with straight tube pipe 7 by connecting bolt 10 even
Connect or be directly welded to connect.Diameter phi 20mm of straight tube pipe 7, long 180mm, middle porose, aperture
φ 2～4mm, is used for guiding current, and the outer wall at straight tube pipe lower end 20mm has the polishing section of 10mm
12, will polish flat by straight tube pipe 7, it is simple to spanner is embedding clamping fixed or rotates regulation.The uncovered height of funnel
Degree 20mm, opening is 60mm, is conducive to expanding infiltrating area, and shape can be that taper is cylindrical or square
Shape.During in order to prevent from preparing concrete sample, the concrete slurry poured leaks into blocking in funnel uncovered 6
Pre-buried pressure guiding pipe endoporus 2, covers layer of metal net 9 on funnel is uncovered, then uses with test above same
The concrete of proportioning pours the mortar barrier film 8 of one layer of 10mm in advance, by uncovered closing after solidification.
2, finishing die 14 is prepared:
As shown in Fig. 5～Fig. 7, finishing die 14 includes a columnar combined cavity, and combined cavity is (just
In dismounting) internal diameter specification is φ 300X300mm, the thickness of combined cavity template is 10mm.Finishing die
Diameter phi 360mm of base 15, is connected with combined cavity by the screw 17 through screw hole 18.Group
Close the steel disc 16 being furnished with a wide 1mm at cavity upper end open, the two ends of steel disc 16 bolt 13 and group
Conjunction cavity is fixed.The center of steel disc 16 has aperture.
3, the uncovered one end of funnel of the pre-buried pressure guiding pipe 2 prepared is inserted in as shown in Figure 5 test specimen
In shape mould 14.The straight tube pipe of the pre-buried pressure guiding pipe steel disc 16 from finishing die upper end as shown in Figure 6
Interstitial hole passes, fixes with steel disc with bolt 5.Make pre-buried pressure guiding pipe 2 nuzzle in advance concrete time position
Accurately, and will not move when pouring.
3, by the concreting of test in finishing die, scabble shaping, then put into standard by specification
Maintenance pond maintenance 28 days, the demoulding；The specification of concrete sample is the cylinder of φ 300mm*300mm,
Pre-buried pressure guiding pipe one end is fastened in concrete sample, and the pre-buried degree of depth is 150mm, pre-buried pressure guiding pipe straight
One end of cylinder pipe is drawn from concrete sample upper end.Pre-buried pressure guiding pipe and test concrete (concrete
Sample) it is integrally formed, make concrete sample 1.
4, according to above-mentioned 1-3 step, it is thus achieved that 3 concrete samples.
Step 2: prepare concrete impermeability test device
1, being upside down in by 3 concrete samples 1 on the workbench 4 being placed with interim catch basin 3,3 pre-
The straight tube pipe exit burying pressure guiding pipe sequentially passes through downwards interim catch basin and workbench, and straight tube pipe draws
Go out end to be respectively fixedly connected with workbench by concrete sample by securing member 5, and connecting water pipe respectively.
2, step 3: test
1, opening the valve of 3 water pipes, press water enters 3 concrete by pre-buried pressure guiding pipe respectively
In sample；
2, complete, such as by new criteria test in 24 hours: engine request sample pressurization 0.8MPa, lower limit
Be set as 0.6MPa constant voltage after 8 hours lower limit automatic boosting be 0.7MPa, then constant voltage 8 hours, lower limit
Automatic boosting is 0.8MPa, complete after 8 hours.
3, in process of the test, observe around concrete sample, occur that press water permeates when there being two
Time out, write down hydraulic pressure now, be the force value of test.
Assay device of the present invention also includes the separator of prior art, water pump, water tank, electrical controller
Table, not shown in figure.
The present invention, while ensureing press water energy uniformly penetrating, solves air-tightness problem during test,
Observe simple, intuitive in the permeation pathway of press water；Improve success rate and the impermeability test instrument of impermeability test
Practicality in engineering.
Above-mentioned detailed description of the invention, only in order to explain the present invention, is not used to limit to the present invention.Without departing substantially from
In the case of the present invention illustrated in claims, detailed description of the invention can be made change and change
Become.All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all
Within protection scope of the present invention should being included in.
Claims (10)
1. an impermeability test method for concrete, it is characterised in that: the concrete steps of described test method
As follows:
Step one: test specimen shapes
Pre-buried pressure guiding pipe one end is placed in finishing die；By the concreting of test in finishing die, in advance
Bury the pressure guiding pipe other end to draw from the concrete upper end poured；After maintenance, remove finishing die, pre-buried impulse
Pipe is integrally formed with concrete, forms concrete sample；
Step 2: install test specimen
It is connected with water pipe from the other end of the pre-buried pressure guiding pipe of concrete extraction；
Step 3: test
Opening aqueduct valve, press water enters in test concrete by pre-buried pressure guiding pipe, when having water from mixed
Out, now the hydraulic pressure of water pipe is the force value of test to the infiltration of ambient of solidifying soil test specimen.
2. according to the impermeability test method for concrete described in claim 1, it is characterised in that: described step
Rapid one: one end that pre-buried pressure guiding pipe is placed in finishing die is funnel-form, the uncovered lower end of funnel is in advance with examination
Test and use concrete enclosing.
3. according to the impermeability test method for concrete described in claim 1 or 2, it is characterised in that: institute
State step 2:
Being inverted by concrete sample and be fixed on the workbench being placed with interim catch basin, pre-buried pressure guiding pipe is another
After one end sequentially passes through downwards interim catch basin and workbench, connecting water pipe.
4. according to the impermeability test method for concrete described in claim 3, it is characterised in that:
The other end of the pre-buried pressure guiding pipe of prepare according to step 1 method 3 concrete samples is led to respectively
Cross valve to be connected with water pipe；Opening 3 aqueduct valves, it is mixed that press water enters test by pre-buried pressure guiding pipe
In solidifying soil, when there being water from the infiltration of ambient of 2 concrete samples out, now the hydraulic pressure of water pipe is examination
The force value tested.
5. a concrete impermeability test device, it is characterised in that: pre-buried pressure guiding pipe one end is by pouring
It is connected with concrete sample one and constitutes concrete sample；The pre-buried pressure guiding pipe other end is connected with water pipe.
6. according to the concrete impermeability test device described in claim 5, it is characterised in that: also include
Place interim catch basin on the table；Described concrete sample is connected with workbench, and described pre-buried
After the pressure guiding pipe other end sequentially passes through downwards interim catch basin and workbench, connecting water pipe.
7. according to the concrete impermeability test device described in claim 6, it is characterised in that: described
One end that pre-buried pressure guiding pipe is cast in concrete is funnel-form, and the uncovered upper surface of funnel is provided with pre-pouring
Experiment concrete enclosing layer.
8. according to the concrete impermeability test device described in claim 7, it is characterised in that: described mixed
Solidifying soil confining bed replaces with mixing confining bed, the wire netting arranged including the uncovered upper surface of funnel and metal
Online the pre-of portion pours test concrete mortar barrier film.
9., according to the concrete impermeability test device described in claim 7-8 any claim, it is special
Levy and be: described pre-buried pressure guiding pipe endoporus aperture is φ 2～4mm.
10. according to the concrete impermeability test device described in claim 9, it is characterised in that: described examination
Test with the cylinder that concrete is φ 300mm*300mm, the described a length of 200mm of pre-buried pressure guiding pipe, in advance
A length of 150mm, the uncovered a diameter of φ 60mm of funnel of concrete is inserted in the one end burying pressure guiding pipe, closes
Layer thickness is 10mm.
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| CN107643244A (en) * | 2017-11-02 | 2018-01-30 | 四川农业大学 | A kind of concrete impermeability test device |
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| CN112942250A (en) * | 2021-02-04 | 2021-06-11 | 中国水利水电建设工程咨询渤海有限公司 | Construction method of concrete anchoring structure with geomembrane penetration detection function |
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| CN106769774A (en) * | 2017-01-13 | 2017-05-31 | 河南省交院工程检测科技有限公司 | Bituminous paving infiltration detection means and the method for the constant pressure varying head that a kind of anti-side is oozed |
| CN107643244A (en) * | 2017-11-02 | 2018-01-30 | 四川农业大学 | A kind of concrete impermeability test device |
| CN109100282A (en) * | 2018-09-10 | 2018-12-28 | 南通市建筑科学研究院有限公司 | The in situ detection instrument and detection method of agent on crack resistance of concrete water permeation performance |
| CN113029895A (en) * | 2021-01-20 | 2021-06-25 | 中铁十二局集团安徽混凝土制品有限公司 | Concrete impermeability test device and test method |
| CN113029895B (en) * | 2021-01-20 | 2024-04-02 | 中铁十二局集团安徽混凝土制品有限公司 | Concrete impermeability test device and test method |
| CN112942250A (en) * | 2021-02-04 | 2021-06-11 | 中国水利水电建设工程咨询渤海有限公司 | Construction method of concrete anchoring structure with geomembrane penetration detection function |
| CN112942250B (en) * | 2021-02-04 | 2022-05-31 | 中国水利水电建设工程咨询渤海有限公司 | Construction method of concrete anchoring structure with geomembrane penetration detection function |
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Inventor after: Huang Xianbin Inventor after: King Philip Hong Inventor after: Zhou Yizhe Inventor after: Zou Zuyin Inventor after: Li Jing Inventor after: Mou Sijia Inventor after: Liao Man Inventor after: Zhou Peng Inventor after: Zhang Linhao Inventor after: He Jialin Inventor after: Xia Xin Inventor before: Huang Xianbin |
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Application publication date: 20160831 |