CN108717038A - A kind of agent on crack resistance of concrete gas permeability experimental rig and method - Google Patents
A kind of agent on crack resistance of concrete gas permeability experimental rig and method Download PDFInfo
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- CN108717038A CN108717038A CN201810502469.3A CN201810502469A CN108717038A CN 108717038 A CN108717038 A CN 108717038A CN 201810502469 A CN201810502469 A CN 201810502469A CN 108717038 A CN108717038 A CN 108717038A
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- 230000035699 permeability Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002775 capsule Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009738 saturating Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
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- Fluid Mechanics (AREA)
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A kind of agent on crack resistance of concrete gas permeability experimental rig and method.It is related to the gas permeability experimental rig and method of concrete durability experiment field more particularly to concrete.It is simple in structure to provide one kind, facilitates processing, improves the agent on crack resistance of concrete gas permeability experimental rig and method of leakproofness and test reliability.Including gas cylinder, gas permeation cell and gas flow meter；The gas permeation cell includes top plate and bottom plate, steel bushing, concrete sample and annular inflatable rubber bag tank, the steel bushing, which is connected between top plate and bottom plate, forms test chamber, the concrete sample and inflating rubber capsule are located in test chamber, and it is intracapsular that the concrete sample and PVC planchets plate one, two are located at inflating rubber；The inside of the inflating rubber capsule is equipped with test specimen compensation mechanism, and the test specimen compensation mechanism is for wrapping up concrete sample.The present invention improves the sealing reliability of concrete sample by the way that test specimen compensation mechanism is arranged.
Description
Technical field
The present invention relates to the gas permeability experimental rigs and side of concrete durability experiment field more particularly to concrete
Method.
Background technology
The durability of concrete material declines and military service performance premature deterioration is current cement concrete scientific circles and engineering
The problem of boundary is paid close attention to the most, gas permeability are the important indicators of a characterization concrete durability.Currently, voltage stabilizing method is tested
Concrete gas permeability generally use mechanical seal finds that the method sealing effect is bad, and be easy to cause mixed in practice
Solidifying soil test specimen destroys, to influence the validity and reliability of concrete gas infiltration coefficient experimental result.
As shown in figure 5, when usually gas cylinder acts inflating rubber capsule inflation, there are evaginations among inflating rubber capsule to make
With so that concrete sample stress is larger, is easily damaged；Meanwhile both ends indent, reduce the reliability of sealing.
Invention content
The present invention facilitates processing, raising leakproofness and test reliability in view of the above problems, provide a kind of simple in structure
Agent on crack resistance of concrete gas permeability experimental rig and method.
The technical scheme is that：Including gas cylinder, gas permeation cell and gas flow meter；The gas infiltration
Unit includes top plate and bottom plate, steel bushing, concrete sample and annular inflatable rubber bag tank, the steel bushing be connected to top plate and bottom plate it
Between form test chamber, the concrete sample and inflating rubber capsule are located in test chamber, the concrete sample and top plate
Between be equipped with PVC planchets plate one, between concrete sample and bottom plate be equipped with PVC planchets plate two, the concrete sample and PVC circle
It is intracapsular that backing plate one, two is located at inflating rubber；
The steel bushing is equipped with the air inlet of connection inflating rubber air bag, and the air inlet is connected to gas cylinder by tracheae,
The bottom plate and PVC planchets plate two are equipped with permeation unit air inlet, and the top plate and PVC planchets plate one are equipped with infiltration
Unit gas outlet, the permeation unit air inlet are connected to gas cylinder by tracheae, and the permeation unit gas outlet passes through tracheae
It is connected to gas flowmeter；
The inside of the inflating rubber capsule is equipped with test specimen compensation mechanism, and the test specimen compensation mechanism is for wrapping up concrete sample.
The test specimen compensation mechanism includes annulus, and gas circuit is equipped in the sleeve, and the intermediate outside of the sleeve is set
There are the annular air-pocket one of connection gas circuit, the bottom plate to be equipped with the stomata of connection gas circuit, the stomata is connected to high pressure by tracheae
Gas cylinder；
The sleeve is for wrapping up concrete sample and PVC planchets plate one, two.
It is respectively equipped with annular air-pocket two on the inside of the both ends of the sleeve, divides on the PVC planchets plate one and PVC planchets plate two
Not She You annular caulking groove, the air bag two is connected to gas circuit, and the air bag two is adaptedly located in caulking groove.
The test specimen compensation mechanism is：The bottom surface of the PVC planchets plate one is equipped with flexible baffle ring one, the PVC planchets plate
Two top surface is equipped with flexible baffle ring two, and the flexibility baffle ring one and flexible baffle ring two are in pyramidal and are symmetrical arranged, described soft
Property baffle ring one contacts flexible baffle ring two so that seal chamber, the concrete are formed between PVC planchets plate one and PVC planchets plate two
Test specimen is located in seal chamber.
It is equipped with sealing ring between the flexibility baffle ring one and the end face of flexible baffle ring two.
The test specimen compensation mechanism includes cylinder, and the cylinder is used to wrap up concrete sample and PVC planchets plate one, two,
The centre of the cylinder is equipped with annular flexible protrusion, and spring is equipped in the flexible projection.
The present invention at work, is formed closed test chamber by top plate, steel bushing and bottom plate, concrete sample is placed on
In test chamber, PVC planchets plate one, two is respectively set in the upper and lower of concrete sample, is wrapped up, head intracapsular to inflating rubber
First, inflating rubber capsule is inflated by gas cylinder, realizes sealing；
Then, gas cylinder is acted by permeation unit inlet charge on bottom plate and PVC planchets plate two, then by top plate and
Permeation unit gas outlet outlet on PVC planchets plate one, is tested by gas flowmeter；
By setting test specimen compensation mechanism, concrete sample is avoided damage to, meanwhile, improve the leakproofness of test.
Concrete sample in the present invention is round pie, and PVC planchets plate one, two is installed above and below, by the way that test specimen is arranged
Compensation mechanism improves the sealing reliability of concrete sample.
Description of the drawings
Fig. 1 is the working state figure of the present invention,
Fig. 2 is the structural schematic diagram of test specimen compensation mechanism embodiment one,
Fig. 3 is the structural schematic diagram of test specimen compensation mechanism embodiment two,
Fig. 4 is the structural schematic diagram of test specimen compensation mechanism embodiment three,
Fig. 5 is the structural schematic diagram of the prior art；
1 is gas cylinder in figure,
2 be gas permeation cell, and 21 be top plate, and 22 be bottom plate, and 23 be steel bushing, and 230 be air inlet, and 24 be concrete sample, 25
It is inflating rubber capsule, 26 be PVC planchets plate one, and 27 be PVC planchets plate two, and 28 be permeation unit air inlet, and 29 be permeation unit
Gas outlet,
3 be gas flowmeter,
4 be test specimen compensation mechanism,
41 be sleeve, and 411 be gas circuit, and 412 be air bag one, and 413 be stomata, and 414 be air bag two, and 415 be caulking groove,
421 be flexible baffle ring one, and 422 be flexible baffle ring two, and 423 be sealing ring,
43 be cylinder, and 431 be flexible projection, and 432 be spring,
5 be air circuit breaker, and 6 be pressure reducing valve；
Arrow represents the state after the inflation of inflating rubber capsule in Fig. 5.
Specific implementation mode
The present invention is as shown in Figs 1-4, including gas cylinder 1,2 and gas flow meter 3 of gas permeation cell；The gas oozes
Saturating unit includes top plate 21, bottom plate 22, steel bushing 23, concrete sample 24 and annular inflatable rubber bag tank 25, and the steel bushing is connected to
Test chamber is formed between top plate and bottom plate, the concrete sample and inflating rubber capsule are located in test chamber, the coagulation
It is equipped with PVC planchets plate one between native test specimen and top plate, PVC planchets plate two, the coagulation are equipped between concrete sample and bottom plate
It is intracapsular that native test specimen and PVC planchets plate one, two are located at inflating rubber（So that inflating rubber capsule package concrete sample and upper and lower PVC
Planchet plate）；
The steel bushing is equipped with the air inlet 230 of connection inflating rubber air bag, and the air inlet is connected to gas cylinder by tracheae,
The bottom plate and PVC planchets plate two are equipped with permeation unit air inlet 28, and the top plate and PVC planchets plate one, which are equipped with, to be oozed
Saturating unit gas outlet 29, the permeation unit air inlet are connected to gas cylinder by tracheae, and the permeation unit gas outlet passes through
Tracheae is connected to gas flowmeter；Air circuit breaker 5 is arranged when work, on tracheae to open and close convenient for control, setting pressure reducing valve 6 is convenient for control
Gas pressure.
The inside of the inflating rubber capsule is equipped with test specimen compensation mechanism 4, and the test specimen compensation mechanism is for wrapping up concrete
Test specimen.
The present invention at work, is formed closed test chamber by top plate, steel bushing and bottom plate, concrete sample is placed on
In test chamber, PVC planchets plate one, two is respectively set in the upper and lower of concrete sample, is wrapped up, head intracapsular to inflating rubber
First, inflating rubber capsule is inflated by gas cylinder, realizes sealing；
Then, gas cylinder is acted by permeation unit inlet charge on bottom plate and PVC planchets plate two, then by top plate and
Permeation unit gas outlet outlet on PVC planchets plate one, is tested by gas flowmeter；
By setting test specimen compensation mechanism, concrete sample is avoided damage to, meanwhile, improve the leakproofness of test.
Concrete sample in the present invention is round pie, and PVC planchets plate one, two is installed above and below, by the way that test specimen is arranged
Compensation mechanism improves the sealing reliability of concrete sample.
The test specimen compensation mechanism includes annulus 41, is equipped with gas circuit 411 in the sleeve, outside the centre of the sleeve
Side is equipped with the annular air-pocket 1 of connection gas circuit, and the bottom plate is equipped with the stomata 413 of connection gas circuit, and the stomata passes through gas
Pipe is connected to gas cylinder；
The sleeve is for wrapping up concrete sample and PVC planchets plate one, two.
By the way that sleeve is arranged, gas cylinder is inflated the air bag one on sleeve, it is made to act on inflating rubber capsule
Centre, in this way, the intermediate indent of inflating rubber capsule, avoids the damage to concrete sample；Both ends outwardly convex makes it through set
Cylinder reliable contacts PVC planchets plate one, two, improves leakproofness.
It is respectively equipped with annular air-pocket 2 414, the PVC planchets plate one and PVC planchets plate two on the inside of the both ends of the sleeve
On be respectively equipped with annular caulking groove 415, the air bag two is connected to gas circuit, and the air bag two is adaptedly located in caulking groove.
By the cooperation that air bag two and caulking groove is arranged, on the one hand, so that positioning is reliable；On the other hand so that sleeve and PVC
Better tightness between planchet plate one, two ensures the reliability of concrete sample test.
The test specimen compensation mechanism is：The bottom surface of the PVC planchets plate one is equipped with flexible baffle ring 1, the PVC planchets
The top surface of plate two is equipped with flexible baffle ring 2 422, and the flexibility baffle ring one and flexible baffle ring two are in pyramidal and are symmetrical arranged,
The flexibility baffle ring one contacts flexible baffle ring two so that seal chamber is formed between PVC planchets plate one and PVC planchets plate two, it is described
Concrete sample is located in seal chamber.
Flexible ring flat-plate one is identical with the structure of flexible baffle ring two, forms seal chamber by the way that the two contact is arranged, on the one hand, carry
High leakproofness；On the other hand, inflating rubber capsule after inflation, for squeezing flexible baffle ring one, two, avoids damage concrete examination
Part, meanwhile, it is further ensured that the leakproofness of seal chamber.Flexible baffle ring one, two can be rubber ring, facilitate processing.
It is equipped with sealing ring 423 between the flexibility baffle ring one and the end face of flexible baffle ring two.
By the way that sealing ring is arranged, ensures leakproofness, improve the reliability of test.
The test specimen compensation mechanism includes cylinder 43, the cylinder for wrap up concrete sample and PVC planchets plate one,
Two, the centre of the cylinder is equipped with annular flexible protrusion 431, and spring 432 is equipped in the flexible projection.
In work, after the inflation of inflating rubber capsule, in-between directly effect and flexible projection, in this way, will wherein by spring
Between form indent, avoid the damage to concrete sample；Both ends outwardly convex makes it through sleeve reliable contacts PVC planchet plates
One, two, improve leakproofness.Flexible projection such as rubber bumps, can be used for placing spring.
The present invention is specifically divided into experiment air-channel system and sealing air-channel system, and gas cylinder is connected to permeation unit by tracheae
Inlet charge is connected to gas flowmeter by concrete sample, then from permeation unit gas outlet outlet by tracheae；Pass through essence
Close pressure regulator valve（Such as pressure reducing valve 6）The pressure value of air-channel system is accurately controlled, gas in air-channel system is tested and oozes under a certain pressure
Pass through concrete sample thoroughly.Inflating rubber air bag expands under certain gas pressure, meanwhile, it is complete by the way that test specimen compensation mechanism is arranged
It is wrapped in concrete sample entirely, concrete sample is avoided to damage, meanwhile, prevent gas in experiment gas circuit from being overflowed from side, in turn
Reach the gas process of osmosis for realizing excellent sealing effect and stable state, improves the validity and reliability of test result.
Claims (7)
1. a kind of agent on crack resistance of concrete gas permeability experimental rig, including gas cylinder, gas permeation cell and gas flow meter；Its
It is characterized in that, the gas permeation cell includes top plate and bottom plate, steel bushing, concrete sample and annular inflatable rubber bag tank, the steel
Set, which is connected between top plate and bottom plate, forms test chamber, and the concrete sample and inflating rubber capsule are located in test chamber,
It is equipped with PVC planchets plate one between the concrete sample and top plate, PVC planchets plate two is equipped between concrete sample and bottom plate,
It is intracapsular that the concrete sample and PVC planchets plate one, two are located at inflating rubber；
The steel bushing is equipped with the air inlet of connection inflating rubber air bag, and the air inlet is connected to gas cylinder by tracheae,
The bottom plate and PVC planchets plate two are equipped with permeation unit air inlet, and the top plate and PVC planchets plate one are equipped with infiltration
Unit gas outlet, the permeation unit air inlet are connected to gas cylinder by tracheae, and the permeation unit gas outlet passes through tracheae
It is connected to gas flowmeter；
The inside of the inflating rubber capsule is equipped with test specimen compensation mechanism, and the test specimen compensation mechanism is for wrapping up concrete sample.
2. a kind of agent on crack resistance of concrete gas permeability experimental rig according to claim 1, which is characterized in that the test specimen is mended
It includes annulus to repay mechanism, and gas circuit is equipped in the sleeve, and the intermediate outside of the sleeve is equipped with the annular gas of connection gas circuit
Capsule one, the bottom plate are equipped with the stomata of connection gas circuit, and the stomata is connected to gas cylinder by tracheae；
The sleeve is for wrapping up concrete sample and PVC planchets plate one, two.
3. a kind of agent on crack resistance of concrete gas permeability experimental rig according to claim 2, which is characterized in that the sleeve
It is respectively equipped with annular air-pocket two on the inside of both ends, annular caulking groove, institute are respectively equipped on the PVC planchets plate one and PVC planchets plate two
It states air bag two and is connected to gas circuit, the air bag two is adaptedly located in caulking groove.
4. a kind of agent on crack resistance of concrete gas permeability experimental rig according to claim 1, which is characterized in that the test specimen is mended
Repaying mechanism is：The bottom surface of the PVC planchets plate one is equipped with flexible baffle ring one, and the top surface of the PVC planchets plate two is equipped with flexible keep off
Ring two, the flexibility baffle ring one and flexible baffle ring two are in pyramidal and are symmetrical arranged, and the flexibility baffle ring one contacts flexible gear
Ring two so that seal chamber is formed between PVC planchets plate one and PVC planchets plate two, the concrete sample is located in seal chamber.
5. a kind of agent on crack resistance of concrete gas permeability experimental rig according to claim 4, which is characterized in that the flexible gear
It is equipped with sealing ring between ring one and the end face of flexible baffle ring two.
6. a kind of agent on crack resistance of concrete gas permeability experimental rig according to claim 1, which is characterized in that the test specimen is mended
It includes cylinder to repay mechanism, and for wrapping up concrete sample and PVC planchets plate one, two, the centre of the cylinder is equipped with the cylinder
Annular flexible protrusion, the flexible projection is interior to be equipped with spring.
7. a kind of method of agent on crack resistance of concrete gas permeability experimental rig, which is characterized in that
First, closed test chamber is formed by top plate, steel bushing and bottom plate, and concrete sample is placed in test chamber, coagulation
Top setting PVC planchets plate one, the lower section setting PVC planchets plate two of native test specimen, are wrapped up intracapsular to inflating rubber；
Secondly, inflating rubber capsule is inflated by gas cylinder, realizes sealing；
Then, gas cylinder is acted by permeation unit inlet charge on bottom plate and PVC planchets plate two, then by top plate and
Permeation unit gas outlet outlet on PVC planchets plate one；
Finally, it is tested by gas flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502469.3A CN108717038B (en) | 2018-05-23 | 2018-05-23 | Concrete anti-gas permeability test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502469.3A CN108717038B (en) | 2018-05-23 | 2018-05-23 | Concrete anti-gas permeability test device |
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| Publication Number | Publication Date |
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| CN108717038A true CN108717038A (en) | 2018-10-30 |
| CN108717038B CN108717038B (en) | 2023-11-24 |
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| CN201810502469.3A Active CN108717038B (en) | 2018-05-23 | 2018-05-23 | Concrete anti-gas permeability test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987760A (en) * | 2019-12-12 | 2020-04-10 | 中国建筑材料科学研究总院有限公司 | Method for detecting gas permeation resistance of material |
| CN111337379A (en) * | 2020-02-13 | 2020-06-26 | 中国海洋大学 | Ocean sediment gas permeability measuring device and using method thereof |
| CN111366522A (en) * | 2020-04-20 | 2020-07-03 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN111855527A (en) * | 2020-07-15 | 2020-10-30 | 西安理工大学 | Damaged concrete gas permeability detection device and method |
| CN113418832A (en) * | 2021-06-22 | 2021-09-21 | 敦煌研究院 | Moisture permeable cup with flexible wall sealing structure for geotechnical cultural relics and moisture permeability testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987760A (en) * | 2019-12-12 | 2020-04-10 | 中国建筑材料科学研究总院有限公司 | Method for detecting gas permeation resistance of material |
| CN111337379A (en) * | 2020-02-13 | 2020-06-26 | 中国海洋大学 | Ocean sediment gas permeability measuring device and using method thereof |
| CN111366522A (en) * | 2020-04-20 | 2020-07-03 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN111366522B (en) * | 2020-04-20 | 2020-10-30 | 苏交科集团股份有限公司 | Test collection system of concrete gas permeability data |
| CN111855527A (en) * | 2020-07-15 | 2020-10-30 | 西安理工大学 | Damaged concrete gas permeability detection device and method |
| CN113418832A (en) * | 2021-06-22 | 2021-09-21 | 敦煌研究院 | Moisture permeable cup with flexible wall sealing structure for geotechnical cultural relics and moisture permeability testing method |
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| Publication number | Publication date |
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| CN108717038B (en) | 2023-11-24 |
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