CN106644822A - Concrete permeability coefficient testing method and concrete permeability coefficient testing device - Google Patents

Concrete permeability coefficient testing method and concrete permeability coefficient testing device Download PDF

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Publication number
CN106644822A
CN106644822A CN201611161191.5A CN201611161191A CN106644822A CN 106644822 A CN106644822 A CN 106644822A CN 201611161191 A CN201611161191 A CN 201611161191A CN 106644822 A CN106644822 A CN 106644822A
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China
Prior art keywords
test
gas
testing
transmission coefficient
test chamber
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CN201611161191.5A
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Chinese (zh)
Inventor
喻庆华
吴逍
王宁
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Jia Hua Special Cement Inc Co
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Jia Hua Special Cement Inc Co
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Priority to CN201611161191.5A priority Critical patent/CN106644822A/en
Publication of CN106644822A publication Critical patent/CN106644822A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/10Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference

Abstract

The invention relates to the technical field of detection, in particular to a concrete permeability coefficient testing method and a concrete permeability coefficient testing device. The testing device comprises a testing cavity, a gas measurement device and a pressure reducing valve, wherein one end of the testing cavity is connected with the gas measurement device, and the other end of the testing cavity is connected with the pressure reducing valve; the testing cavity is a cone, the end, having a small diameter, of the testing cavity is connected with the gas measurement device, and the end, having a large diameter, of the testing cavity is connected with the pressure reducing valve. The testing method comprises the steps of putting a prefabricated concrete test piece into the testing cavity, connecting the test piece, and replenishing the testing cavity with test gas through the pressure reducing valve, wherein the pressure reducing valve can be used for controlling the pressure of the gas pumped into the testing cavity, so that permeability coefficients under different pressures can be conveniently tested; replenishing a U-shaped pipe with permeating gas, and directly reading according to the numerical value in the U-shaped pipe; the test results are visual and reliable. Different gas only needs to be pumped if the test gas needs to be replaced. The device and the method have the advantages of being simple in structure, convenient to operate and accurate in test results.

Description

A kind of concrete air transmission coefficient method of testing and its test device
Technical field
The present invention relates to detection technique field, and in particular to a kind of concrete air transmission coefficient method of testing and its test dress Put.
Background technology
Concrete, refers to the general designation of the cementing integral engineered composite material of aggregate by Binder Materials.That what is generally said is mixed A solidifying native word to be referred to and make Binder Materials, sand, masonry aggregate with cement;With water(Additive and admixture can be contained)Match somebody with somebody by a certain percentage Close, it is agitated obtained by cement concrete, also referred to as normal concrete, it is widely used in civil engineering.
Durability is one of subject matter that current reinforced concrete structure faces, in some important infrastructures and various Xoncrete structure used in harsh and unforgiving environments, the requirement to durability is higher.Many destructive factors of concrete are straight with permeability Correlation is connect, infiltrative height can reflect to a certain extent the durability of concrete.
Permeability is the leading indicator of concrete durability, it refer to gas, liquid or ion be stressed, chemical potential or Person's electric field action, infiltration, diffusion or the complexity for migrating in concrete.Because concrete is a kind of porous material, hole Presence affect its intensity, and at aspects such as impermeability, air-tightness, corrosion resistances, even more with the knot in inside concrete hole Structure is closely related, and for example, concrete carbonization, steel bar corrosion and freeze-thaw damage mainly receive CO2、O2、H2O, Cl-, the gas such as SO2- 4 Body, fluid and soluble detrimental material penetrate into the diffusion rate of inside concrete and are controlled, therefore the permeability of concrete is direct It is related to the durability of concrete.
Publication No.:CN1815174, publication date is:The Chinese invention patent of 2006-08-09, discloses a kind of concrete Gas permeability coefficient annular tester and its method of testing, are made up of cover plate, shell, effusion meter, sealing ring, sample, are covered Plate is located at the top of shell, and sample is located inside the shell, and its outer wall is indulged in cylinder, boring, cross section in annular shape Section is u-shaped, and the top of sample, bottom are equipped with sealing gasket, the air inlet connection compression gas tank of shell side, cover plate Center is provided with connection duct, and the boring position of sample passes through the connection duct connection traffic instrument.During test, will be tested Sample is placed in inside the shell, opens compressed gas tank valve, tests sample permeability, and holding sample equilibration time is 10 minutes ~ 20 minutes, every group of sample repeated 3 ~ 5 times, changed test pressure, and retest, test passes through sample Gas flow, tries to achieve sample infiltration coefficient meansigma methodss, takes 3 ~ 5 sample infiltration coefficient meansigma methodss tested as the group The test value of sample.
Above-mentioned tester can solve the problems, such as to a certain extent to test concrete air transmission coefficient, but the tester is appointed So there is the problems such as test pressure control is difficult, and test result draws complexity, the accuracy for making test is greatly lowered.
The content of the invention
It is an object of the present invention to be directed to problems of the prior art, propose that one kind can be entered using multiple gases Row test, and simple structure, easy to operate, test pressure is controllable, and the intuitive and reliable concrete air transmission coefficient of test result is surveyed Method for testing and its test device.
To achieve these goals, the technical solution used in the present invention is:
A kind of concrete air transmission coefficient method of testing, comprises the following steps:
A. the test block of correspondingly-shaped is made according to the shape of test chamber 7, in-door seasoning is then placed within 14-28 days;
B. ready-made test block in step a is put in test chamber, in cavity wall two end cap upper cover plate, is consolidated two cover plates with screw rod It is fixed;
C. gas bomb is opened, insufflation gas is continued in test chamber by air relief valve, test intracavity is filled with by air relief valve control Gas pressure, keep pressure 5-7 hours;
D. by the reading in observation U-tube after the completion of testing, you can draw the volume of infiltration gas, calculate air transmission coefficient;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures Test value of the meansigma methodss of lower air transmission coefficient as the test block.
In step a, under same environment, made test block is multiple;Respectively will be multiple in step b Test block is fitted in corresponding test chamber;Gas bomb is simultaneously to insufflation gas in multiple test chambers in step c;The step In d, the gas volume in each U-tube is averaged, obtain measured value.
It is described at the same test test block be 6;In step d, the gas volume of gained in 6 U-tubes is removed One peak, removes a minimum, takes the meansigma methodss of remaining four, obtains final product the measured value of volume.
In step e, the number of times of retest is 3-5 time.
A kind of concrete air transmission coefficient test device, including test chamber, gas measurement device, air relief valve and gas bomb, institute State test chamber one end to be connected with gas measurement device, the other end is connected with air relief valve;The test chamber be cone, diameter it is little one End is connected with gas measurement device, and the big one end of diameter is connected with air relief valve, and described air relief valve one end is connected with test chamber, another End is connected with gas bomb.
The gas measurement device is U-tube, and liquid is provided with the U-tube, and scale is provided with tube wall.
The test chamber includes the cavity wall of vertebral body shape, and cavity wall two ends are each provided with cover plate, and two cover plates are connected by screw rod.
The test chamber and gas measurement device are 6, are connected with air relief valve.
The cover plate is provided with sealing ring with the junction of cavity wall.
The screw rod is provided with 3.
Adaptor is additionally provided between the air relief valve and test chamber.
The adaptor includes hollow bolt joint and globular hinge head, and the hollow bolt joint leads to globular hinge head Cross hollow bolt connection.
Gasket seal is provided between the hollow bolt and globular hinge head, the globular hinge head connects with hollow bolt Gasket seal is provided between head.
The test chamber is connected with gas measurement device by pipeline.
As a result of above-mentioned technical proposal, the invention has the beneficial effects as follows:
1st, the present invention after connecting, will be tested by the way that prefabricated concrete test part is loaded into test intracavity by air relief valve Gas is passed through in test chamber, and air relief valve can control the pressure for being passed through test intracavity gas, can conveniently test saturating under different pressures Gas coefficient, the gas of infiltration is passed through in U-tube, and the reading that can pass through in U-tube intuitively reads, and test result is intuitive and reliable. Gas to change test, then need to only be passed through different gases.Easy to operate with simple structure, test result is accurate True advantage.
2nd, test gas to be passed through from the big one end of test chamber diameter, during test, test block is acted on due to pressure, To cavity wall extruding the gap between test block and cavity wall can be made less, allow test result more accurately and reliably.
3rd, because the time of single test block test is longer, and in order to ensure the accuracy of test result, it has to same One test block is repeatedly tested, and the testing time is further extended.The present invention is capable of achieving 6 test blocks and tests simultaneously, greatly saves About the time of test, improve the efficiency of test.
4th, cover plate is fixed by screw rod, facilitates the installation and removal of test block, convenient operation.
5th, adaptor can make air relief valve directly need not be connected with test chamber, convenient dismounting and install, can be by transport Air relief valve and test chamber are transported respectively, only need to be connected air relief valve with adaptor during installation.
Description of the drawings
Fig. 1 is present configuration figure;
Fig. 2 is adapter structure explosive view of the present invention.
Labelling in figure:1st, test block;2nd, pipeline;3rd, gas measurement device;4th, adaptor;5th, air relief valve;6th, gas bomb;7、 Test chamber;8th, screw rod;9th, cavity wall;10th, cover plate;11st, hollow bolt;12nd, globular hinge head;13rd, hollow bolt joint;14th, it is close Gasket.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
Embodiment 1
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses a kind of ventilative system of concrete Number method of testing, the present embodiment is comprised the following steps:
A. the test block 1 of correspondingly-shaped is made according to the shape of test chamber 7, in-door seasoning is then placed within 28 days;
B. ready-made test block 1 in step a is put in test chamber 7, in the two end cap upper cover plate 10 of cavity wall 9, is covered two with screw rod 8 Plate 10 is fixed;
C. gas bomb 6 is opened, insufflation gas is continued in test chamber 7 by air relief valve 5, test is filled with by the control of air relief valve 5 Gas pressure in chamber 7, keeps the pressure 7 hours;
D. by the reading in observation U-tube 3 after the completion of testing, you can draw the volume of infiltration gas, calculate air transmission coefficient;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures Test value of the meansigma methodss of lower air transmission coefficient as the test block 1.
In step a, under same environment, made test block 1 is multiple;To be many respectively in step b Individual test block 1 is fitted in corresponding test chamber 7;Gas bomb 6 is simultaneously to insufflation gas in multiple test chambers 7 in step c;Institute In stating step d, the gas volume in each U-tube 3 is averaged, obtain measured value.
It is described at the same test test block 1 be 6;In step d, the gas volume of gained in 6 U-tubes 3 is gone Fall a peak, remove a minimum, take the meansigma methodss of remaining four, obtain final product the measured value of volume.
In step e, the number of times of retest is 5 times.
Embodiment 2
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses a kind of ventilative system of concrete Number method of testing, the present embodiment is comprised the following steps:
A. the test block 1 of correspondingly-shaped is made according to the shape of test chamber 7, in-door seasoning is then placed within 21 days;
B. ready-made test block 1 in step a is put in test chamber 7, in the two end cap upper cover plate 10 of cavity wall 9, is covered two with screw rod 8 Plate 10 is fixed;
C. gas bomb 6 is opened, insufflation gas is continued in test chamber 7 by air relief valve 5, test is filled with by the control of air relief valve 5 Gas pressure in chamber 7, keeps the pressure 6 hours;
D. by the reading in observation U-tube 3 after the completion of testing, you can draw the volume of infiltration gas, calculate air transmission coefficient;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures Test value of the meansigma methodss of lower air transmission coefficient as the test block 1.
In step a, under same environment, made test block 1 is multiple;To be many respectively in step b Individual test block 1 is fitted in corresponding test chamber 7;Gas bomb 6 is simultaneously to insufflation gas in multiple test chambers 7 in step c;Institute In stating step d, the gas volume in each U-tube 3 is averaged, obtain measured value.
It is described at the same test test block 1 be 6;In step d, the gas volume of gained in 6 U-tubes 3 is gone Fall a peak, remove a minimum, take the meansigma methodss of remaining four, obtain final product the measured value of volume.
In step e, the number of times of retest is 4 times.
Embodiment 3
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1, present embodiment discloses a kind of ventilative system of concrete Number method of testing, comprises the following steps:
A. the test block 1 of correspondingly-shaped is made according to the shape of test chamber 7, in-door seasoning is then placed within 14 days;
B. ready-made test block 1 in step a is put in test chamber 7, in the two end cap upper cover plate 10 of cavity wall 9, is covered two with screw rod 8 Plate 10 is fixed;
C. gas bomb 6 is opened, insufflation gas is continued in test chamber 7 by air relief valve 5, test is filled with by the control of air relief valve 5 Gas pressure in chamber 7, keeps the pressure 5 hours;
D. by the reading in observation U-tube 3 after the completion of testing, you can draw the volume of infiltration gas, calculate air transmission coefficient;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures Test value of the meansigma methodss of lower air transmission coefficient as the test block 1.
In step a, under same environment, made test block 1 is multiple;To be many respectively in step b Individual test block 1 is fitted in corresponding test chamber 7;Gas bomb 6 is simultaneously to insufflation gas in multiple test chambers 7 in step c;Institute In stating step d, the gas volume in each U-tube 3 is averaged, obtain measured value.
It is described at the same test test block 1 be 6;In step d, the gas volume of gained in 6 U-tubes 3 is gone Fall a peak, remove a minimum, take the meansigma methodss of remaining four, obtain final product the measured value of volume.
In step e, the number of times of retest is 3 times.
Embodiment 4
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1 and accompanying drawing 2, present embodiment discloses a kind of coagulation Native air transmission coefficient test device, the present embodiment includes:
A kind of concrete air transmission coefficient test device, including test chamber 7, gas measurement device 3, air relief valve 5 and gas bomb 6, institute State the one end of test chamber 7 to be connected with gas measurement device 3, the other end is connected with air relief valve 5;The test chamber 7 is cone, and diameter is little One end be connected with gas measurement device 3, the big one end of diameter is connected with air relief valve 5, the one end of the air relief valve 5 and test chamber 7 It is connected, the other end is connected with gas bomb 6.
The gas measurement device 3 is U-tube, and liquid is provided with the U-tube, and scale is provided with tube wall.
The present invention tests intracavity 7 by the way that prefabricated concrete test part 1 is loaded, after connecting, will by air relief valve 5 Test gas is passed through in test chamber 7, the controllable pressure for being passed through gas in test chamber 7 of air relief valve 5, can conveniently test different pressures Under air transmission coefficient, the gas of infiltration is passed through in U-tube 3, and the reading that can pass through in U-tube 3 intuitively reads, and test result is straight See reliable.Gas to change test, then need to only be passed through different gases.It is easy to operate with simple structure, test As a result accurate advantage.
Embodiment 5
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1 and accompanying drawing 2, present embodiment discloses a kind of coagulation Native air transmission coefficient test device, the present embodiment includes:
A kind of concrete air transmission coefficient test device, including test chamber 7, gas measurement device 3, air relief valve 5, the test chamber 7 One end is connected with gas measurement device 3, and the other end is connected with air relief valve 5;The test chamber 7 be cone, the little one end of diameter with Gas measurement device 3 is connected, and the big one end of diameter is connected with air relief valve 5.
The gas measurement device 3 is U-tube, and liquid is provided with the U-tube, and scale is provided with tube wall.
The test chamber 7 includes the cavity wall 9 of vertebral body shape, and the two ends of cavity wall 9 are each provided with cover plate 10, and two cover plates 10 pass through screw rod 8 connections.
The test chamber 7 and gas measurement device 3 are 6, are connected with air relief valve 5.
The cover plate 10 is provided with sealing ring with the junction of cavity wall 9.
The screw rod 8 is provided with 3.
The one end of the air relief valve 5 is connected with test chamber 7, and the other end is connected with gas bomb 6.
Adaptor 4 is additionally provided between the air relief valve 5 and test chamber 7.
The adaptor 4 includes hollow bolt joint 13 and globular hinge head 12, the hollow bolt joint 13 with it is spherical Articulated joint 12 is connected by hollow bolt 11.
Gasket seal 14, the globular hinge head 12 and sky are provided between the hollow bolt 11 and globular hinge head 12 Gasket seal 14 is provided between heart screwed joint 13.
The test chamber 7 is connected with gas measurement device 3 by pipeline 2.
The present invention tests intracavity 7 by the way that prefabricated concrete test part 1 is loaded, after connecting, will by air relief valve 5 Test gas is passed through in test chamber 7, the controllable pressure for being passed through gas in test chamber 7 of air relief valve 5, can conveniently test different pressures Under air transmission coefficient, ventilative gas is passed through in U-tube 3, and the reading that can pass through in U-tube 3 intuitively reads, and test result is straight See reliable.Gas to change test, then need to only be passed through different gases.It is easy to operate with simple structure, test As a result accurate advantage.Test gas is passed through from the big one end of the diameter of test chamber 7, and during test, test block is due to pressure Power is acted on, and can be extruded to cavity wall 9, makes the gap between test block 1 and cavity wall 9 less, allows test result more accurately and reliably.It is logical Cross screw rod 8 to fix cover plate 10, facilitate the installation and removal of test block 1, convenient operation.Adaptor 4 does not need can air relief valve 5 Directly it is connected with test chamber 7, it is convenient to dismantle and install, air relief valve 5 and test chamber 7 can respectively be transported in transport, during installation Only air relief valve 5 need to be connected with adaptor 4.
Embodiment 6
As a kind of preferred embodiment of the present invention, with reference to Figure of description 1 and accompanying drawing 2, present embodiment discloses a kind of coagulation Native air transmission coefficient method of testing and its test device, the present embodiment includes:
A kind of concrete air transmission coefficient method of testing, comprises the following steps:
A. the test block 1 of correspondingly-shaped is made according to the shape of test chamber 7, in-door seasoning is then placed within 14-28 days;
B. ready-made test block 1 in step a is put in test chamber 7, in the two end cap upper cover plate 10 of cavity wall 9, is covered two with screw rod 8 Plate 10 is fixed;
C. gas bomb 6 is opened, insufflation gas is continued in test chamber 7 by air relief valve 5, test is filled with by the control of air relief valve 5 Gas pressure in chamber 7, keeps pressure 5-7 hours;
D. by the reading in observation U-tube 3 after the completion of testing, you can draw the volume of infiltration gas, calculate air transmission coefficient;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures Test value of the meansigma methodss of lower air transmission coefficient as the test block 1.
In step a, under same environment, made test block 1 is multiple;To be many respectively in step b Individual test block 1 is fitted in corresponding test chamber 7;Gas bomb 6 is simultaneously to insufflation gas in multiple test chambers 7 in step c;Institute In stating step d, the gas volume in each U-tube 3 is averaged, obtain measured value.
It is described at the same test test block 1 be 6;In step d, the gas volume of gained in 6 U-tubes 3 is gone Fall a peak, remove a minimum, take the meansigma methodss of remaining four, obtain final product the measured value of volume.
In step e, the number of times of retest is 3-5 time.
The test device that a kind of above-mentioned concrete air transmission coefficient method of testing is used, including test chamber 7, gasmetry dress 3, air relief valve 5 is put, the one end of the test chamber 7 is connected with gas measurement device 3, and the other end is connected with air relief valve 5;The test chamber 7 is cone, and the little one end of diameter is connected with gas measurement device 3, and the big one end of diameter is connected with air relief valve 5.
The gas measurement device 3 is U-tube, and liquid is provided with the U-tube, and scale is provided with tube wall.
The test chamber 7 includes the cavity wall 9 of vertebral body shape, and the two ends of cavity wall 9 are each provided with cover plate 10, and two cover plates 10 pass through screw rod 8 connections.
The test chamber 7 and gas measurement device 3 are 6, are connected with air relief valve 5.
The cover plate 10 is provided with sealing ring with the junction of cavity wall 9.
The screw rod 8 is provided with 3.
The one end of the air relief valve 5 is connected with test chamber 7, and the other end is connected with gas bomb 6.
Adaptor 4 is additionally provided between the air relief valve 5 and test chamber 7.
The adaptor 4 includes hollow bolt joint 13 and globular hinge head 12, the hollow bolt joint 13 with it is spherical Articulated joint 12 is connected by hollow bolt 11.
Gasket seal 14, the globular hinge head 12 and sky are provided between the hollow bolt 11 and globular hinge head 12 Gasket seal 14 is provided between heart screwed joint 13.
The test chamber 7 is connected with gas measurement device 3 by pipeline 2.
Embodiment described above only expresses the specific embodiment of the application, and its description is more concrete and detailed, but and Therefore the restriction to the application protection domain can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, on the premise of conceiving without departing from technical scheme, some deformations and improvement can also be made, these belong to this The protection domain of application.

Claims (10)

1. a kind of concrete air transmission coefficient method of testing, it is characterised in that comprise the following steps:
A. according to test chamber(7)Shape make correspondingly-shaped test block(1), it is then placed within in-door seasoning 14-28 days;
B. by ready-made test block in step a(1)It is put into test chamber(7)In, in cavity wall(9)Two end cap upper cover plate(10), use spiral shell Bar(8)By two cover plates(10)It is fixed;
C. gas bomb is opened(6), by air relief valve(5)To test chamber(7)In continue insufflation gas, by air relief valve(5)Control It is filled with test chamber(7)Interior gas pressure, keeps pressure 5-7 hours;
D. by observing U-tube after the completion of testing(3)In reading, you can draw the volume of ventilative gas, calculate ventilative system Number;
E. pressure is changed, the above-mentioned testing procedure of repetition draws the value of the air transmission coefficient under each pressure, by several different pressures The meansigma methodss of lower air transmission coefficient are used as the test block(1)Test value.
2. a kind of concrete air transmission coefficient method of testing according to claim 1, it is characterised in that:In step a, Under same environment, made test block(1)For multiple;Respectively by multiple test blocks in step b(1)Load corresponding Test chamber(7)In;Gas bomb in step c(6)Simultaneously to multiple test chambers(7)Middle insufflation gas;In step d, will Each U-tube(3)In gas volume average, obtain measured value.
3. a kind of concrete air transmission coefficient method of testing according to claim 2, it is characterised in that:It is described at the same test Test block(1)For 6;In step d, by 6 U-tubes(3)The gas volume of middle gained removes a peak, removes one Individual minimum, takes the meansigma methodss of remaining four, obtains final product the measured value of volume.
4. a kind of concrete air transmission coefficient method of testing according to claim 1, it is characterised in that:In step e, weight The number of times of repetition measurement examination is 3-5 time.
5. a kind of test device that concrete air transmission coefficient method of testing as described in claim 1 is used, its feature exists In:Including test chamber(7), gas measurement device(3), air relief valve(5)And gas bomb(6), the test chamber(7)One end and gas Measurement apparatus(3)It is connected, the other end and air relief valve(5)It is connected;The test chamber(7)For cone, the little one end of diameter and gas Measurement apparatus(3)It is connected, the big one end of diameter and air relief valve(5)It is connected, the air relief valve(5)One end and test chamber(7)It is connected, The other end and gas bomb(6)It is connected.
6. a kind of concrete air transmission coefficient test device according to claim 5, it is characterised in that:The gasmetry dress Put(3)For U-tube, liquid is provided with the U-tube, scale is provided with tube wall.
7. a kind of concrete air transmission coefficient test device according to claim 5, it is characterised in that:The test chamber(7) Including the cavity wall of vertebral body shape(9), cavity wall(9)Two ends are each provided with cover plate(10), two cover plates(10)By screw rod(8)Connection.
8. a kind of concrete air transmission coefficient test device according to claim 5, it is characterised in that:The test chamber(7) And gas measurement device(3)For 6, and air relief valve(5)It is connected.
9. a kind of concrete air transmission coefficient test device according to claim 5, it is characterised in that:The air relief valve(5) With test chamber(7)Between be additionally provided with adaptor(4), the adaptor(4)Including hollow bolt joint(13)And globular hinge Head(12), the hollow bolt joint(13)With globular hinge head(12)By hollow bolt(11)Connection.
10. a kind of concrete air transmission coefficient test device according to claim 9, it is characterised in that:The hollow bolt (11)With globular hinge head(12)Between be provided with gasket seal(14), the globular hinge head(12)With hollow bolt joint (13)Between be provided with gasket seal(14).
CN201611161191.5A 2016-12-15 2016-12-15 Concrete permeability coefficient testing method and concrete permeability coefficient testing device Pending CN106644822A (en)

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CN107085091A (en) * 2017-06-23 2017-08-22 兰州交通大学 A kind of diffusion coefficient of oxygen in concrete test device
CN109917113A (en) * 2019-01-07 2019-06-21 山东科技大学 A kind of concrete gas heat-insulating and sealing measuring instrument
CN110044794A (en) * 2019-05-06 2019-07-23 宁夏大学 Bituminous concrete block permeation permeability performance tester

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CN107085091A (en) * 2017-06-23 2017-08-22 兰州交通大学 A kind of diffusion coefficient of oxygen in concrete test device
CN109917113A (en) * 2019-01-07 2019-06-21 山东科技大学 A kind of concrete gas heat-insulating and sealing measuring instrument
CN110044794A (en) * 2019-05-06 2019-07-23 宁夏大学 Bituminous concrete block permeation permeability performance tester

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