CN1825109A - Intelligent tester for concrete permeability - Google Patents
Intelligent tester for concrete permeability Download PDFInfo
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- CN1825109A CN1825109A CN 200610009881 CN200610009881A CN1825109A CN 1825109 A CN1825109 A CN 1825109A CN 200610009881 CN200610009881 CN 200610009881 CN 200610009881 A CN200610009881 A CN 200610009881A CN 1825109 A CN1825109 A CN 1825109A
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Abstract
The invention relates to concrete penetrability intelligent measuring device that includes an open mouthed cathode room container, an open mouthed anode room container, sample fixing room, and a cavity. The invention adopts graphite electrode that avoids the measuring error caused by copper net electrolyzing broken and/ or the air bubble from electrode reaction.
Description
Technical field
The present invention relates to a kind of device that can the fast measuring concrete permeability.
Background technology
At present, U.S. ASTM C1202 method of testing is the accelerated test procedures that most widely used concrete permeability is measured.This device is made up of cathode chamber, anode chamber, copper net electrode, 60V direct supply and reometer.Will be through the full water of vacuum, the concrete sample side seal of diameter 100mm, thick 50mm is fixed between cathode chamber and the anode chamber then.Inject the NaCl solution of content 3% in the cathode chamber, the NaOH solution of content 0.3mol/L injects in the anode chamber, respectively the copper net electrode at negative and positive the two poles of the earth and the negative pole and the positive pole of 60V direct supply is linked, and reometer is connected into circuit, every 30min record primary current, continue energising 6 hours; Evaluate concrete perviousness with the total electric weight that passes through in 6 hours.But there is following defective in this device: cathode chamber and anode chamber's volume are too small, and it is stable that the concentration of cathode chamber solution NaCl is difficult to keep, simultaneously because electric current causes the deviation of measurement result by the joule heating effect that produces; Copper net electrode ruptures in internal cause electrolytic reaction conduction time easily, and the bubble that electrode reaction produces is assembled between copper mesh and sample and caused electric current to reduce, and causes measuring error occurring; Artificial record primary current was wasted time and energy every 30 minutes.
Summary of the invention
In order to overcome the prior art defective that copper net electrode ruptures in internal cause electrolytic reaction conduction time easily in measuring process, the invention provides a kind of intelligent tester for concrete permeability.The present invention includes the uncovered cathode chamber container of one side, anode chamber's container that one side is uncovered, the test specimen fixed chamber, cathode terminal and anode terminal, the test specimen fixed chamber is the uncovered cavitys of both ends of the surface, the cathode chamber container latching makes the intracavity inter-connection of the two and makes the closed position sealing on an end face of test specimen fixed chamber, anode chamber's container latching makes the intracavity inter-connection of the two and makes the closed position sealing on another end face of test specimen fixed chamber, cathode terminal is fixed between the surfaces externally and internally of cathode chamber container, anode terminal is fixed between the surfaces externally and internally of anode chamber's container, the top of anode chamber's container has the anodic dissolution inlet, the top of cathode chamber container has the cathode solution inlet, it also comprises a graphite electrode and No. two graphite electrodes, graphite electrode is arranged in the inner chamber of anode chamber's container and with anode terminal and is connected, and No. two graphite electrodes are arranged in the inner chamber of cathode chamber container and with cathode terminal and are connected.During device busy of the present invention, be fixed on concrete sample in the test specimen fixed chamber and make the cathode chamber container and anode chamber's container between cut off, in the cathode chamber container, inject the NaCl solution of content 3%, inject the NaOH solution of content 0.3mol/L in the container of anode chamber.Apply DC voltage and measure parameter such as electric current to two graphite electrodes by cathode terminal and anode terminal, thereby calculate the permeance property of concrete sample.It is corrosion resistant graphite electrode that the present invention changes copper net electrode, has avoided electrolysis fracture of internal cause copper mesh and/or electrode reaction produce in conduction time bubble to assemble between copper mesh and sample and causes the electric current reduction and the measuring error that causes; Can also increase negative electrode and anode chamber's volume in addition, reduce the influence of Joule heat, and make the NaCl solution amount enough big, guarantee that the chlorine ion concentration in the solution keeps constant (or concentration change can be ignored) as far as possible in conduction time.That the present invention has is reasonable in design, the advantage of reliable operation, is fit to promote.
Description of drawings
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the electrical block diagram of embodiment of the present invention four.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1.It is by the uncovered cathode chamber container 1 of one side, anode chamber's container 3 that one side is uncovered, test specimen fixed chamber 2, cathode terminal 9, anode terminal 10, a graphite electrode 6 and No. two graphite electrodes 11 are formed, test specimen fixed chamber 2 is the uncovered cavitys of both ends of the surface, cathode chamber container 1 is fastened on and makes the intracavity inter-connection of the two on the end face of test specimen fixed chamber 2 and make the closed position sealing, anode chamber's container 3 is fastened on and makes the intracavity inter-connection of the two on another end face of test specimen fixed chamber 2 and make the closed position sealing, cathode terminal 9 is fixed between the surfaces externally and internally of cathode chamber container 1, anode terminal 10 is fixed between the surfaces externally and internally of anode chamber's container 3, the top of anode chamber's container 3 has anodic dissolution inlet 3-1, the top of cathode chamber container 1 has cathode solution inlet 1-1, graphite electrode 6 is arranged in the inner chamber of anode chamber's container 3 and with anode terminal 10 and is connected, and No. two graphite electrodes 11 are arranged in the inner chamber of cathode chamber container 1 and with cathode terminal 9 and are connected.
Embodiment two: present embodiment is described below in conjunction with Fig. 1.The difference of present embodiment and embodiment one is, it also comprises sealing gasket 8, has annular groove 2-1 in the inner chamber of test specimen fixed chamber 2, and sealing gasket 8 is arranged among the annular groove 2-1.So be provided with, columniform concrete sample 7 insertions are provided with among the annular groove 2-1 of sealing gasket 8, guarantee reliably to cut off between cathode chamber container 1 and the anode chamber's container 3.Other composition is identical with embodiment one with annexation.
Embodiment three: present embodiment is described below in conjunction with Fig. 1.The difference of present embodiment and embodiment one is, it also comprises a bolt 12 and No. two bolts 13, a bolt 12 is tightened between cathode chamber container 1 and the anode chamber's container 3 fixes the two, and No. two bolts 13 are tightened between cathode chamber container 1 and the anode chamber's container 3 fixes the two.So be provided with, the installation and removal of this device are all very convenient.Other composition is identical with embodiment one with annexation.
Embodiment four: present embodiment is described below in conjunction with Fig. 2.The difference of present embodiment and embodiment one is, it also comprises tunable voltage dc power supply 15, sampling resistor 16, voltage sampling circuit 17 and single-chip microcomputer 18, the negative pole of tunable voltage dc power supply 15 connects cathode terminal 9, the positive pole of tunable voltage dc power supply 15 connects an end of sampling resistor 16, another termination anode terminal 10 of sampling resistor 16, the two ends of voltage sampling circuit 17 are connected on the two ends of sampling resistor 16, and the output terminal of voltage sampling circuit 17 connects the input end of single-chip microcomputer 18.Other composition is identical with embodiment one with annexation.So be provided with, realized data automatic collecting and automatic record, can set acquisition time arbitrarily.But the direct supply of pressure regulation is provided, has been applied to two voltages on the graphite electrode, measured the concrete permeability energy under a plurality of voltage parameters by change.
Claims (4)
1, intelligent tester for concrete permeability, it comprises the cathode chamber container (1) that one side is uncovered, anode chamber's container (3) that one side is uncovered, test specimen fixed chamber (2), cathode terminal (9) and anode terminal (10), test specimen fixed chamber (2) is the uncovered cavitys of both ends of the surface, cathode chamber container (1) is fastened on and makes the intracavity inter-connection of the two on the end face of test specimen fixed chamber (2) and make the closed position sealing, anode chamber's container (3) is fastened on and makes the intracavity inter-connection of the two on another end face of test specimen fixed chamber (2) and make the closed position sealing, cathode terminal (9) is fixed between the surfaces externally and internally of cathode chamber container (1), anode terminal (10) is fixed between the surfaces externally and internally of anode chamber's container (3), the top of anode chamber's container (3) has anodic dissolution inlet (3-1), the top of cathode chamber container (1) has cathode solution inlet (1-1), it is characterized in that it also comprises a graphite electrode (6) and No. two graphite electrodes (11), a graphite electrode (6) is arranged in the inner chamber of anode chamber's container (3) and with anode terminal (10) and is connected, and No. two graphite electrodes (11) are arranged in the inner chamber of cathode chamber container (1) and with cathode terminal (9) and are connected.
2, intelligent tester for concrete permeability according to claim 1 is characterized in that it also comprises sealing gasket (8), has annular groove (2-1) in the inner chamber of test specimen fixed chamber (2), and sealing gasket (8) is arranged in the annular groove (2-1).
3, intelligent tester for concrete permeability according to claim 1, it is characterized in that it also comprises a bolt (12) and No. two bolts (13), a bolt (12) is tightened between cathode chamber container (1) and the anode chamber's container (3) the two is fixed, and No. two bolts (13) are tightened between cathode chamber container (1) and the anode chamber's container (3) the two is fixed.
4, intelligent tester for concrete permeability according to claim 1, it is characterized in that it also comprises tunable voltage dc power supply (15), sampling resistor (16), voltage sampling circuit (17) and single-chip microcomputer (18), the negative pole of tunable voltage dc power supply (15) connects cathode terminal (9), the positive pole of tunable voltage dc power supply (15) connects an end of sampling resistor (16), another termination anode terminal (10) of sampling resistor (16), the two ends of voltage sampling circuit (17) are connected on the two ends of sampling resistor (16), and the output terminal of voltage sampling circuit (17) connects the input end of single-chip microcomputer (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100098819A CN100498325C (en) | 2006-03-31 | 2006-03-31 | Intelligent tester for concrete permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100098819A CN100498325C (en) | 2006-03-31 | 2006-03-31 | Intelligent tester for concrete permeability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1825109A true CN1825109A (en) | 2006-08-30 |
| CN100498325C CN100498325C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100098819A Expired - Fee Related CN100498325C (en) | 2006-03-31 | 2006-03-31 | Intelligent tester for concrete permeability |
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| CN (1) | CN100498325C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680180A (en) * | 2017-01-16 | 2017-05-17 | 华南理工大学 | Chlorine ion multi-span concrete migration quantity monitoring device and method, and application thereof |
| CN107505357A (en) * | 2017-08-07 | 2017-12-22 | 石家庄铁道大学 | A kind of alkali-aggregate reaction Tachistoscope method and test device |
| CN111041496A (en) * | 2019-12-16 | 2020-04-21 | 河海大学 | Device and method for controlling chloride ion permeation of reinforced concrete |
-
2006
- 2006-03-31 CN CNB2006100098819A patent/CN100498325C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680180A (en) * | 2017-01-16 | 2017-05-17 | 华南理工大学 | Chlorine ion multi-span concrete migration quantity monitoring device and method, and application thereof |
| CN106680180B (en) * | 2017-01-16 | 2023-05-23 | 华南理工大学 | Device, method and application for monitoring migration quantity of chloride ions across concrete |
| CN107505357A (en) * | 2017-08-07 | 2017-12-22 | 石家庄铁道大学 | A kind of alkali-aggregate reaction Tachistoscope method and test device |
| CN111041496A (en) * | 2019-12-16 | 2020-04-21 | 河海大学 | Device and method for controlling chloride ion permeation of reinforced concrete |
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| Publication number | Publication date |
|---|---|
| CN100498325C (en) | 2009-06-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Guanyue Highway & Bridge Co., Ltd. Assignor: Harbin Institute of Technology Contract record no.: 2010440001100 Denomination of invention: Intelligent tester for concrete permeability Granted publication date: 20090610 License type: Exclusive License Open date: 20060830 Record date: 20100805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20150331 |
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| EXPY | Termination of patent right or utility model |