CN106769759B - A kind of infiltrative device of test steel reinforced concrete protective layer and accelerated test method - Google Patents
A kind of infiltrative device of test steel reinforced concrete protective layer and accelerated test method Download PDFInfo
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- CN106769759B CN106769759B CN201611126087.2A CN201611126087A CN106769759B CN 106769759 B CN106769759 B CN 106769759B CN 201611126087 A CN201611126087 A CN 201611126087A CN 106769759 B CN106769759 B CN 106769759B
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 239000011241 protective layer Substances 0.000 title claims abstract description 24
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 24
- 238000010998 test method Methods 0.000 title abstract description 5
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000035699 permeability Effects 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000012153 distilled water Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000011017 operating method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000012113 quantitative test Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004590 silicone sealant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
-
- 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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A kind of infiltrative device of test steel reinforced concrete protective layer and accelerated test method, it is related to a kind of infiltrative device and method of test steel reinforced concrete protective layer.The device includes: hermetically sealed can (1), permeating medium distilled water (1-1), gas-liquid separation net (1-2), air gauge (1-3), relief valve (1-4), sealing ring (1-5), clamping flange (1-6), electronic balance (2), fixed rack (2-1) weigh hook (2-2), steel wire (2-3), oil bath heating device (3), conduction oil (3-1) and oil bath pan (3-2) composition.Apparatus of the present invention and operating procedure are simple, can carry out quantitative assessment to the permeability of small size steel reinforced concrete protective layer sample, test time-consuming few, the testing inspection field suitable for concrete permeability.
Description
Technical field
The invention belongs to the infiltrative device of test steel reinforced concrete protective layer in concrete material field and its users
Method is related to steel reinforced concrete protective layer quality test detection technique field.
Background technique
Exclude Durability of Concrete caused by raw material quality, the deterioration of concrete durability be usually all by table and
In gradually develop.For armored concrete, in the case where there is carbonization or erosion carbon dioxide, concrete reinforcement
The integrality and anti-permeability performance of protective layer are to determine the key point of Service Life of Reinforced Concrete Structures.Practical Service Environment
Under, although there is no problem for concrete substrate durability itself, once steel reinforced concrete protective layer occurs because external environment corrodes
Degrade, corrosion, cracking when, it is likely that will lead to inside concrete reinforcement corrosion acceleration, and then seriously affect concrete structure
Durability and service life.Therefore, the permeability of steel reinforced concrete protective layer is tested and analyzes for studying concrete durability
Play a significant role.For the steel reinforced concrete protective layer within the scope of 0~50mm of surface layer, it is limited to the reasons such as sample size, mesh
Before there is no mature testing standard or method to evaluate its permeability.The test steel reinforced concrete protective layer permeability being currently known
Method have: patent document CN 101929937 discloses a kind of method of testing permeability of concrete on surface of reinforced bar, principle
It is that hydrogen is quantitatively discharged into concrete using positioned at rebar surface, test Hydrogen Vapor Pressure decline curve in certain time comes
Reflect the gas permeability of concrete.Since steel reinforced concrete protective layers most of in Practical Project destruction is all due to aggressivity
What ion permeated under the action of water, only reflect the gas permeability of steel reinforced concrete protective layer in this way, cannot
Reflect the permeability of concrete water resistant and erosion carbon dioxide；Patent document CN 101532941 discloses a kind of detection concrete
The device of near-surface permeability, principle are by testing concrete internal and external humidity change procedure in the long period, thus indirectly
Reflect the permeability of concrete.But practical steel reinforced concrete protective layer is usually changed, institute by the variation of extraneous temperature and humidity environment
In this way can only qualitative characterization certain small inside concrete humidity affected by environment variation, and exist and take a long time
Limitation.
Summary of the invention
The purpose of the invention is to overcome, the device of above-mentioned existing test concrete permeability is complicated, precision is low, can not
Quantitative test, time-consuming, and is difficult to evaluate the technical problems such as the permeability of steel reinforced concrete protective layer, and the present invention provides one kind
Test the device and its application method of concrete permeability.
The purpose of the present invention is achieved through the following technical solution.
The infiltrative device of a kind of test steel reinforced concrete protective layer, comprising: hermetically sealed can, electronic balance, oil bath heating dress
It sets；The sealing pot bottom fills permeating medium distilled water, middle part is equipped with gas-liquid separation net, side is equipped with duct and connects air gauge
And relief valve；Hollow at the top of hermetically sealed can, top flange flange is equipped with the groove of different-diameter for placing sealing ring, seals
Tank top edge is equipped with hole makes it be connected with clamping device for placing bolt；The electronic balance is placed on fixed rack
The weighing hook in face, electronic balance is allowed to connect with hermetically sealed can with steel wire；The oil bath heating device is by conduction oil and oil bath pan
(3-2) composition, the lower part of hermetically sealed can is in conduction oil.
Hermetically sealed can of the present invention uses stainless steel material, and hermetically sealed can lower part tank diameter is 50~200mm, is highly
100~200mm, wall thickness are 5mm or more；Sealing pot bottom fills permeating medium distilled water, upper position setting inside hermetically sealed can
There is one layer of gas-liquid separation net, separation net mesh size is 0.15~2.36mm；Hermetically sealed can top flange flange is provided with difference
The groove of diameter can place the sealing ring of different-diameter, and it is close the concrete sample to be tested of different-diameter can be clamped flange
It seals and is connected.
Clamping flange of the present invention is hollow disk, it is characterised in that stainless steel material is used, with a thickness of 5~
10mm, clamping flange lower part are provided with the groove with hermetically sealed can top flange flange same shape and size；Clamp flange
Edge is provided with the hole of size and number identical as hermetically sealed can top flange flange, makes it by concrete to be measured for placing bolt
Sample sealing is fixed and closely coupled with hermetically sealed can.
A kind of infiltrative accelerated test method of test steel reinforced concrete protective layer of the invention, comprising the following steps:
The first step, sampling and sample preparation: the core boring sampling from concrete component, 50~200mm of core diameter, then according to need
Certain thickness concrete sample is cut from core sample, thickness is desirable according to concrete strength and maximum size of coarse aggregate
10mm~50mm, sample upper and lower surface are parallel and smooth；The sample is put into saturated limewater and is impregnated no less than for 24 hours；Then,
The specimen surface moisture finished will be impregnated to dry, then sealed sample side with sealant, stood to the sealing of sample side
Glue is fully cured；
Second step, fixed sample to be tested: injected slurry volume is 1/4~1/2 infiltration for sealing tank volume inside to hermetically sealed can
Medium distilled water；Then 1 outer diameter is respectively placed and sample to be tested is straight in hermetically sealed can top flange flange and clamping flange base
Then hermetically sealed can, the ready sample to be tested of step 1 and clamping flange are tightly fastened by the equal sealing ring of diameter with bolt；
Electronic balance is stably placed at fixed rack by third step) on, then step 2 is installed and attached to together
Hermetically sealed can, concrete sample to be measured and clamping flange three parts wire hanger are on the weighing hook of electronic balance；
4th step, oil bath heating device electrified regulation, makes thermally conductive oil temperature increase to the temperature of setting from room temperature；
The assembled device of step 3 is stably placed on oil bath heating device by the 5th step, and adjust steel wire length with
Guarantee that 1/2 height of hermetically sealed can lower part is in inside conduction oil, but the bottom of hermetically sealed can and oil bath pot bottom at least 20mm distance；
6th step closes relief valve, opens balance and start recording data, reaches step 2 to whole device mass loss
In initially to the 1/3 of the permeating medium distillation water quality injected inside hermetically sealed can when, off-test；Take device mass loss and when
Half interval contour loss of improving quality increases rapidly and at the uniform velocity characterizes the permeability of sample in the slope of curve of near linear section, takes 3
The arithmetic average of sample is the permeability of the sample, unit kg/m2·h。
7th step after the test removes hermetically sealed can, disassembles after its temperature is cooled to room temperature；It repeats the above steps
It can carry out the infiltrative test of next sample.
The invention has the advantages that being suitable for the infiltrative testing inspection field of steel reinforced concrete protective layer；Its principle
It is to allow permeating medium distilled water to generate steam under sealing and hot conditions and penetrate concrete sample, passes through and monitor certain time
The mass loss rate of the interior distilled water lost through concrete sample, and then quantitatively determine the infiltration of concrete sample
Property；No pollution to the environment is used in the present invention and has the distilled water of preferable wellability as permeating medium with concrete, and sharp
Concrete is passed it through with the pressure that vapor itself generates, therefore apparatus of the present invention are simple and environmentally-friendly, and tested time-consuming few；This
Invention automatically records data using electronic balance, can effectively improve test efficiency, reduce test process manpower consumption and
Human error.
Detailed description of the invention
Fig. 1 apparatus of the present invention schematic diagram；
The schematic diagram main view of Fig. 2-1 hermetically sealed can of the present invention (2)；
The schematic diagram side view of Fig. 2-2 hermetically sealed can of the present invention (2)；
The schematic diagram top view of Fig. 2-3 hermetically sealed can of the present invention (2)；
Fig. 3-1 present invention clamping flange (1-6) and sealing ring (1-5) schematic diagram main view；
Fig. 3-2 present invention clamping flange (1-6) and sealing ring (1-5) schematic diagram side view；
Fig. 3-3 present invention clamping flange (1-6) and sealing ring (1-5) schematic diagram top view；
Fig. 3-4 present invention clamping flange (1-6) and sealing ring (1-5) schematic bottom view；
Fig. 4 verification test result figure of the present invention.
Specific embodiment
Referring to Fig.1, the infiltrative device preferred embodiment of test steel reinforced concrete protective layer of the present invention, it by
Wall thickness is 5mm, total height is 200mm stainless steel hermetically sealed can 1, the electronic balance 2 that range is 5kg and precision is 0.1g, and most
The oil bath heating device 3 that high-temperature can be heated to 200 DEG C is constituted.Wherein: it is 0.18mm's that mesh size is equipped in the middle part of hermetically sealed can 1
Copper gas-liquid separation net 1-2, side are equipped with the duct that diameter is 5mm, and for connecting, range is 20bar and precision is 0.2bar's
Air gauge 1-3 and relief valve 1-4；1 top flange flange of hermetically sealed can is equipped with the groove that outer diameter is 50mm, placed 1 outer diameter
The rubber seal 1-5 for being 3mm for 50mm, diameter of section, it is 5mm that 1 top flange flange plate edge of hermetically sealed can, which is equipped with 6 diameters,
Circular hole, can place bolt make its with a thickness of 5mm stainless steel clamping flange 1-6 be connected；Electronic balance 2 is placed on solid
Determine above rack 2-1, the weighing hook 2-2 of electronic balance 2 is allowed to connect with hermetically sealed can 1 with steel wire 2-3；Oil bath heating device 3
It is made of conduction oil 3-1 and oil bath pan 3-2, the lower part 80mm of hermetically sealed can 1 is in 130 DEG C of conduction oil 3-1.
Inventor has carried out field tests to concrete using this test device.Preferred implementation steps are as follows:
The first step, sample preparation.The cube concrete test specimen that test sample is 28 day age, side length is 200mm.The test block at
It puts and conserves in dry environments to 28 day age after type 1 day.It is first in order to obtain the test sample that permeance property has significant difference
First from the concrete formation Middle face drill core, core diameter 50mm, then from the forming surface of core sample 2mm and 100mm down
The thin slice of 15mm thickness is cut respectively as final sample to be tested.After 2 preparation of samples are good, steeped in saturated limewater
It 24 hours, then takes out and is dried the moisture on its surface with blotting paper, and sealed its side with silicone sealant, be placed on dry
6 hours in dry air, the silicone sealant of concrete sample side is fully hardened at this time；
Second step, fixed sample to be tested.40g distilled water 1-1 is injected inside to hermetically sealed can 1；Then in 1 top method of hermetically sealed can
The rubber seal 1-5 that 1 outer diameter is 50mm is respectively placed in blue flange and the clamping bottom flange 1-6, then will be close with 6 bolts
The ready sample to be tested of sealed cans 1, step 1 and clamping flange 1-6 are tightly fastened；
Electronic balance 2 is stably placed on fixed rack 2-1, step 2 is then installed and attached to one by third step
Hermetically sealed can 1, concrete sample to be measured and the clamping flange 1-6 three parts risen are hung with the weighing that steel wire 2-3 is suspended on electronic balance 2
On hook 2-2；
4th step, 3 electrified regulation of oil bath heating device, makes conduction oil 3-1 temperature increase to 130 degrees Celsius from room temperature；
The assembled device of step 3 is stably placed on oil bath heating device 3, and adjusts steel wire 2-3 long by the 5th step
Degree is to guarantee that 1 lower part of hermetically sealed can, 1/2 height is in inside conduction oil 3-1, and the bottom of hermetically sealed can 1 has with the bottom oil bath pan 3-2
The distance of 25mm；
6th step closes relief valve 1-4, opens balance and start recording data, and test period is under the experiment condition
The relation curve of 2 samples corresponding device mass loss and time as shown in Figure 4 can be obtained in 18h, takes surface layer and inside mixed
The slope for last 8 data points for increasing suddenly and at the uniform velocity changing on the solidifying corresponding mass loss curve of earth sample is respectively
8.72g/h and 3.46g/h is 0.001520m according to the practical vapor permeation area that the sample deducts sealing circuit covering2, therefore surface layer
Infiltration rate corresponding with inner concrete sample is respectively 5.74kg/ (m2And 2.28kg/ (m h)2·h)。
7th step after the test removes hermetically sealed can 1 and its device being attached thereto, and is cooled to room temperature to its temperature
After disassemble；The infiltrative test of next sample can be carried out by repeating the above steps.
Apparatus of the present invention and method have the following effects: device and method are simple and environmentally-friendly, it is time-consuming less, can quantitative test etc. it is excellent
Point.
Claims (4)
1. a kind of infiltrative device of test steel reinforced concrete protective layer characterized by comprising hermetically sealed can (1), electronic balance
(2), oil bath heating device (3)；Hermetically sealed can (1) bottom fills permeating medium distilled water (1-1), middle part is isolated equipped with gas-liquid
Net (1-2), side are equipped with duct connection air gauge (1-3) and relief valve (1-4)；Hollow at the top of hermetically sealed can (1), top flange is convex
Edge disk is equipped with the groove of different-diameter for placing sealing ring (1-5), and hermetically sealed can (1) top flange flange plate edge is equipped with hole
Hole makes it be connected with clamping flange (1-6) for placing bolt；The electronic balance (2) is placed on fixed rack (2-1) above,
The weighing hook (2-2) of electronic balance (2) is allowed to connect with hermetically sealed can (1) with steel wire (2-3)；The oil bath heating device (3)
It is made of conduction oil (3-1) and oil bath pan (3-2), the lower part of hermetically sealed can (1) is in conduction oil (3-1)；Sample to be tested is put
Enter and is impregnated in saturated limewater no less than for 24 hours.
2. a kind of infiltrative device of test steel reinforced concrete protective layer according to claim 1, which is characterized in that sealing
Tank (1) uses stainless steel material, and it is highly 100~200mm, wall thickness is that hermetically sealed can (1) lower part tank diameter, which is 50~200mm,
5mm or more；Hermetically sealed can (1) bottom fills permeating medium distilled water (1-1), and the internal upper position of hermetically sealed can (1) is provided with one layer
Gas-liquid separation net (1-2), separation net mesh size are 0.15~2.36mm；Hermetically sealed can (1) top flange flange is provided with not
With the groove of diameter, the sealing ring (1-5) of different-diameter can be placed, and the concrete sample to be tested of different-diameter can be clamped
Flange (1-6) seals and is connected.
3. a kind of infiltrative device of test steel reinforced concrete protective layer according to claim 1, which is characterized in that clamping
Flange (1-6) is hollow disk, using stainless steel material, with a thickness of 5~10mm, clamp the lower part flange (1-6) be provided with
The groove of hermetically sealed can (1) top flange flange same shape and size；Clamping edge flange (1-6) is provided with and hermetically sealed can
(1) hole of the identical size and number of top flange flange makes it that concrete sample to be measured is sealed fixation for placing bolt
And it is closely coupled with hermetically sealed can.
4. using a kind of accelerated test side for testing the infiltrative device of steel reinforced concrete protective layer according to claim 1
Method, which comprises the following steps:
The first step, sampling and sample preparation: the core boring sampling from concrete component, 50~200mm of core diameter, then as needed from
Cut certain thickness concrete sample on core sample, thickness according to concrete strength and maximum size of coarse aggregate can use 10mm~
50mm, sample upper and lower surface are parallel and smooth；Then, the specimen surface moisture finished will be impregnated to dry, it then will with sealant
Sample side sealing, stands to the sealant of sample side and is fully cured；
Second step, fixed sample to be tested: being 1/4~1/2 infiltration of hermetically sealed can (1) volume to the internal injected slurry volume of hermetically sealed can (1)
Saturating medium distilled water (1-1)；Then it is respectively placed outside 1 in hermetically sealed can (1) top flange flange and clamping bottom flange (1-6)
The diameter sealing ring equal with sample to be tested diameter (1-5), it is then with bolt that hermetically sealed can (1), step 1 is ready to test sample
Product and clamping flange (1-6) are tightly fastened；
Electronic balance (2) is stably placed on fixed rack (2-1), step 2 is then installed and attached to one by third step
Hermetically sealed can (1), concrete sample to be measured and clamping flange (1-6) three parts risen are suspended on electronic balance (2) with steel wire (2-3)
Weighing hook (2-2) on；
4th step, oil bath heating device (3) electrified regulation, makes conduction oil (3-1) temperature increase to the temperature of setting from room temperature；
The assembled device of step 3 is stably placed on oil bath heating device (3) by the 5th step, and it is long to adjust steel wire (2-3)
Degree is to guarantee that 1/2 height of hermetically sealed can (1) lower part is in conduction oil (3-1) inside, but the bottom of hermetically sealed can (1) and oil bath pan (3-
2) bottom at least 20mm distance；
6th step is closed relief valve (1-4), is opened balance and start recording data, is reached step to whole device mass loss
In two initially to the 1/3 of the permeating medium distillation water quality injected inside hermetically sealed can (1) when, off-test；Device quality is taken to damage
Lose the infiltration for improving quality with time graph and losing and increasing rapidly and at the uniform velocity characterize sample in the slope of curve of near linear section
Property, take the arithmetic average of 3 samples for the permeability of the sample, unit is kg/ (m2·h)；
7th step after the test removes hermetically sealed can (1), disassembles after its temperature is cooled to room temperature；It repeats the above steps i.e.
It can carry out the infiltrative test of next sample.
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| CN107589050A (en) * | 2017-08-15 | 2018-01-16 | 哈尔滨工业大学 | A kind of monitoring system and method for the Concrete Material of monitoring in real time infiltration water suction coupling coefficient |
| CN108918376B (en) * | 2018-05-17 | 2021-01-05 | 云南省建筑科学研究院 | Device and test method for detecting concrete surface permeability and maintenance effect |
| CN113466109B (en) * | 2021-08-11 | 2022-05-27 | 龙游县万基建设工程检测有限公司 | Device and method for detecting impermeability of concrete for building |
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| JPH11230890A (en) * | 1998-02-10 | 1999-08-27 | Sumitomo Metal Mining Co Ltd | Method for measuring gas permeability of alc semiplastic body |
| CN101482470B (en) * | 2009-02-13 | 2010-12-08 | 西北农林科技大学 | Test method for anti-permeability performance of fluid sealant and substrate bonding sample interface |
| CN202814846U (en) * | 2012-09-18 | 2013-03-20 | 盛之会 | Concrete permeation coefficient determinator |
| CN103776749B (en) * | 2014-02-21 | 2016-11-02 | 哈尔滨工业大学 | Asphalt mastic vapor permeation experimental technique under a kind of evaluation pressurized conditions |
| CN104913999B (en) * | 2015-06-15 | 2017-06-06 | 三峡大学 | A kind of noiseless weighing device suitable for specific humiture environment |
| CN205719844U (en) * | 2016-04-12 | 2016-11-23 | 武汉科技大学 | Porous piles up the determinator of bed water holding and Permeable characteristic |
| CN205786227U (en) * | 2016-05-24 | 2016-12-07 | 湖南建研信息技术股份有限公司 | A kind of concrete impermeability test sensing device |
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