CN201159716Y - Device for fast assessing corrosion resistance of steel reinforced concrete - Google Patents
Device for fast assessing corrosion resistance of steel reinforced concrete Download PDFInfo
- Publication number
- CN201159716Y CN201159716Y CNU2008200791154U CN200820079115U CN201159716Y CN 201159716 Y CN201159716 Y CN 201159716Y CN U2008200791154 U CNU2008200791154 U CN U2008200791154U CN 200820079115 U CN200820079115 U CN 200820079115U CN 201159716 Y CN201159716 Y CN 201159716Y
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- electric osmose
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- reinforced concrete
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Abstract
The utility model discloses a device which evaluates the anticorrosion performance of the reinforced concrete rapidly and belongs to the steel anticorrosion performance detection device field. The device comprises an electro-osmosis pool, a power supply system, a data acquisition system and a control system; the device can accelerate the penetration of the chloride ion to the surface of the steel rib, cause the corrosion of the steel rib and reduce the test time; meanwhile, the low voltage 3-20 is adopted for the test; the heat production is avoided in the concrete so that the test result is not influenced; a zero resistance ampere meter is adopted to reduce the error of the current measurement of the macro battery and monitor the current of the macro battery continuously so that the continuous automatic control is realized and the corrosion rate of the steel rib can be determined quantitatively.
Description
Technical field
The utility model belongs to iron and steel corrosion resistivity checkout equipment scope, and more particularly, the utility model is a kind of device of rapid evaluation reinforced concrete corrosion resistance.
Background technology
For civil engineering work, 20th century were epoch of reinforced concrete.From the shell construction of world-famous Sydney Opera House, to the highest skyscraper in the Malaysian world; From the darkest in the world oil drilling platform in the Norway North Sea, to the highest in the world Chinese Three Gorges water power dam; From off-shore airport, the overlength bridge spanning the sea of Japan, to the tunnel, deep-sea, the English Channel that connects Britain France; From the nuclear power station to the highway, bridge, various industry, commerce and residential housing, to the national defense and military facility, the overwhelming majority is a reinforced concrete building.The very difficult imagination does not have reinforced concrete, and what apperance the social development meeting of today is.But when the new structures of reinforced concrete of sign social development progress were constantly finished, the reinforced concrete constructional work of bringing major hidden danger for people's life safety can be found everywhere because of the endurance issues that corrosion failure produces, and was startling.The destroying concrete structure that the reinforcement corrosion that chlorion causes extensively causes, the security that has a strong impact on even jeopardize buildingss such as building construction, bridge.
Usually adopt reinforcement corrosion in the drying and watering cycle method reinforcing bar accelerate concrete at present, the shortcoming of the method is that the test duration is long, can not implement continuous monitoring to corrosion cell simultaneously.Though the electric osmose test method has been widely used in the coefficient of diffusion of test chlorion in concrete, but the electric osmose voltage that is adopted is the 30-60 volt, its shortcoming is added overtension, can influence test findings at the certain heat of inner generation of concrete time in experimentation.The method that is used for quantitative measurement concrete reinforcement corrosion speed at present has: gravimetric method, linear polarization method, AC impedance spectrometry etc., but gravimetric method need be destroyed xoncrete structure, linear polarization method can not carry out continuous automatic measurement to the reinforcement corrosion state, and AC impedance spectrometry test duration length and spectrogram are found the solution difficulty.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and device that a kind of rapid evaluation reinforced concrete corrosion resistance is provided, it is characterized in that the utility model is made up of electric osmose pond, power-supply system, data acquisition system (DAS) and control system; Concrete sample 3 is installed in the electric osmose groove 7 in electric osmose pond, and the positive plate 1 of electric osmose groove 7 the right and lefts and negative plate 6 are connected the positive and negative electrode of direct supply 11 respectively; Concrete sample 3 is connected with data acquisition system (DAS), control system with non-steeped working electrode 4 by soaking working electrode 9, and A/D module, the D/A module by data collecting card is connected to PC then.
In the electric osmose groove 7 in described electric osmose pond concrete sample 3 is installed, concrete sample 3 is divided into left and right sides two parts with electric osmose groove 7, and electric osmose groove 7 left-hand components are displayed left electric osmose liquid 10, and electric osmose groove 7 right-hand components are displayed right electric osmose liquid 8, thermometer 5 is fixed on the electric osmose pond lid 2, inserts in the right electric osmose liquid 8; Electric osmose groove 7 both sides are placed positive plate 1 and negative plate 6 respectively, and positive plate 1 is connected with the positive pole of direct supply 11 by reometer A, switch 12, and negative plate 6 connects the negative pole of direct supply 11 by relay R LA2.
Non-steeped contrast electrode 4 is fixed on the top of described concrete sample 3, and fixing working electrode 9, two electrodes that soak in bottom are connected with copper conductor; The immersion working electrode 9 of concrete sample 3 bottoms immerses in the electric osmose liquid, the non-steeped contrast electrode 4 in top is exposed in the air, non-steeped contrast electrode 4 adopts epoxy resin 13 to seal with the side that immersion working electrode 9 is connected with copper conductor and is coated with, and opposite side is exposed in the electric osmose liquid.
Described data acquisition system (DAS), is made up of the signal amplifier that integrated transporting discharging-2, resistance R 4, R5 form the zero resistance ammeter that integrated transporting discharging-1, resistance R 3 are formed the A/D module of data card; Soak working electrode 9 and be connected by relay R LA1 and the negative pole of forming the integrated transporting discharging-1 of zero resistance ammeter, the positive pole of non-steeped working electrode 4 connection integrated transporting dischargings-1, integrated transporting discharging-2, and be connected with an end of the A/D module of capture card; The resistance R 4 of the output signal amplifier of zero resistance ammeter, the output of signal amplifier are received the other end of the A/D module of capture card.
Described control system comprises the hardware and software two large divisions, and hardware components comprises D/A module, relay R LA1, RLA2, triode Q1 and the Q2 of data card; Relay R LA1 connects the collector of triode Q1, the base stage of triode Q1 is connected the two ends of D/A module 1 by the emitter of variable resistor R1 and triode Q1, in like manner, relay R LA2 connects the collector of triode Q2, and the base stage of triode Q2 is connected the two ends of D/A module 2 by the emitter of variable resistor R2 and triode Q2; The output of the integrated converter of A/D module, D/A module 1, D/A module 2 connects PC.
The utility model has following beneficial effect compared with prior art: utilize this device can quicken chloride permeability to rebar surface, cause reinforcement corrosion, reduce test period, simultaneously, adopted the low-voltage of 3-20, can not produce heat at inside concrete, can be not influential to experimental result; The employing of zero resistance amp gauge greatly reduces the error of macro cell current measurement; Can carry out continuous monitoring to the macro cell electric current, realize automatically-controlled continuous, the corrosion rate of definite reinforcing bar that can be quantitative,
Description of drawings
Fig. 1 quickens chloride permeability test unit synoptic diagram for electrode.
Fig. 2 is a reinforced concrete sample structure synoptic diagram.
Embodiment
The utility model provides a kind of device of rapid evaluation reinforced concrete corrosion resistance.Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
As shown in Figure 1, the utility model is made up of electric osmose pond, power-supply system, data acquisition system (DAS) and control system; Concrete sample 3 is installed in the electric osmose groove 7 in electric osmose pond, and the positive plate 1 of electric osmose groove 7 the right and lefts and negative plate 6 are connected the positive and negative electrode of direct supply 11 respectively; Concrete sample 3 is connected with data acquisition system (DAS), control system with non-steeped working electrode 4 by soaking working electrode 9, and A/D module, the D/A module by data collecting card is connected to PC then.Be installed in electric osmose groove 7 inner concrete samples 3 electric osmose groove 7 is divided into left and right sides two parts, electric osmose groove 7 left-hand components are displayed left electric osmose liquid 10, its concentration is the NaOH solution of 0.2mol/L, electric osmose groove 7 right-hand components are displayed right electric osmose liquid 8, comprise that concentration is the NaOH solution of 0.2mol/L and the NaCl that accounts for NaOH solution 5wt%, concrete sample 3 both sides liquid levels height are the same, and right electric osmose liquid 9 provides the chlorion of test usefulness; Electric osmose pond lid 7 is used to reduce the evaporation of electric osmose liquid, and thermometer 5 is fixed on the electric osmose pond lid 2, inserts in the right electric osmose liquid 8, and thermometer 5 is used for measuring the temperature variation of right electric osmose liquid 8 in the electric osmose pond 8.Electric osmose groove 7 both sides are placed positive plate 1 and negative plate 6 respectively, and positive plate 1 is connected with the positive pole of direct supply 11 by reometer A, switch 12, and negative plate 6 connects the negative pole of direct supply 11 by relay R LA2.Direct supply 11 can apply the DC voltage of 3-20 volt by positive plate 1 and 6 pairs of concrete samples 3 of negative plate, and chlorion to soaking working electrode 9 surface seepages, soaks working electrode 9 and non-steeped working electrode 4 formation macro cells under effect of electric field.
Described data acquisition system (DAS), is made up of the signal amplifier that integrated transporting discharging-2, resistance R 4, R5 form the zero resistance ammeter that integrated transporting discharging-1, resistance R 3 are formed the A/D module of data card; Soak working electrode 9 and be connected by relay R LA1 and the negative pole of forming the integrated transporting discharging-1 of zero resistance ammeter, the positive pole of non-steeped working electrode 4 connection integrated transporting dischargings-1, integrated transporting discharging-2, and be connected with an end of the A/D module of capture card; The resistance R 4 of the output signal amplifier of zero resistance ammeter, the output of signal amplifier are received the other end of the A/D module of capture card.Soak the microampere order macro etch electric current I between working electrode 9 and the non-steeped working electrode 4
Corr,, become voltage signal V1=R3*I through zero resistance ammeter
Corr, and then, become the voltage signal V2=R5*V1/R4 that can gather through signal amplification circuit, and by the A/D module of data collecting card, realize collection to voltage signal V2, obtain I at last
Corr=V2*R4/ (R3*R5).
Described control system comprises the hardware and software two large divisions, and hardware components comprises D/A module, relay R LA1, RLA2, triode Q1 and the Q2 of data card; Relay R LA1 connects the collector of triode Q1, the base stage of triode Q1 is connected the two ends of D/A module 1 by the emitter of variable resistor R1 and triode Q1, in like manner, relay R LA2 connects the collector of triode Q2, and the base stage of triode Q2 is connected the two ends of D/A module 2 by the emitter of variable resistor R2 and triode Q2; The output of the integrated converter of A/D module, D/A module 1, D/A module 2 connects PC.D/A module 1 provides control voltage, and process triode Q1 amplification control RLA1 realizes the control to the data acquisition system.D/A module 2 provides control voltage, and process triode Q2 amplification control RLA2 realizes the control to power-supply system.Software section can be finished control to the whole test system by control system, can realize data acquisition simultaneously and preserve test duration and macro cell electric current I
CorrData when the macro cell current value reaches setting value, can finish the electric osmose test automatically.
Electrode corrosion and etch state detect: power-supply system applies DC voltage a period of time of 3-20 volt for the electric osmose pond under the control of control system, quicken the infiltration of chlorion in concrete, solution temperature change can be controlled at ± 0.2 ℃ scope in, stop to power up a period of time then, under the control of control system, utilize data acquisition system (DAS) to measure in the concrete sample macro cell current value between two electrodes, preserve test duration and macro cell electric current I
CorrData reach setting value up to the macro cell electric current, finish test automatically.
Claims (5)
1. the device of a rapid evaluation reinforced concrete corrosion resistance is characterized in that, this device is made up of electric osmose pond, power-supply system, data acquisition system (DAS) and control system; Concrete sample (3) is installed in the electric osmose groove (7) in electric osmose pond, and the positive plate (1) of electric osmose groove (7) the right and left and negative plate (6) are connected the positive and negative electrode of direct supply (11) respectively; Concrete sample (3) is connected with data acquisition system (DAS), control system with non-steeped working electrode (4) by soaking working electrode (9), and A/D module, the D/A module by data collecting card is connected to PC then.
2. according to the device of the described rapid evaluation reinforced concrete of claim 1 corrosion resistance, it is characterized in that, concrete sample (3) is installed in the electric osmose groove (7) in described electric osmose pond, concrete sample (3) is divided into left and right sides two parts with electric osmose groove (7), electric osmose groove (7) left-hand component is displayed left electric osmose liquid (10), electric osmose groove (7) right-hand component is displayed right electric osmose liquid (8), and thermometer (5) is fixed on the electric osmose Chi Gai (2), inserts in the right electric osmose liquid (8); Electric osmose groove (7) both sides are placed positive plate (1) and negative plate (6) respectively, and (1 is connected with the positive pole of direct supply (11) by reometer A, switch (12) positive plate, and negative plate (6) passes through the negative pole of relay R LA2 connection direct supply (11).
3. according to the device of the described rapid evaluation reinforced concrete of claim 1 corrosion resistance, it is characterized in that non-steeped contrast electrode (4) is fixed on the top of described concrete sample (3), the fixing working electrode (9) that soaks in bottom, two electrodes are connected with copper conductor; The immersion working electrode (9) of concrete sample (3) bottom immerses in the electric osmose liquid, the non-steeped contrast electrode in top (4) is exposed in the air, non-steeped contrast electrode (4) adopts epoxy resin (13) to seal with the side that immersion working electrode (9) is connected with copper conductor and is coated with, and opposite side is exposed in the electric osmose liquid.
4. according to the device of the described rapid evaluation reinforced concrete of claim 1 corrosion resistance, it is characterized in that, described data acquisition system (DAS) is by the A/D module of data card, by the zero resistance ammeter that integrated transporting discharging-1, resistance R 3 are formed, form by the signal amplifier that integrated transporting discharging-2, resistance R 4, R5 form; Soak working electrode (9) and be connected by relay R LA1 and the negative pole of forming the integrated transporting discharging-1 of zero resistance ammeter, the positive pole of non-steeped working electrode (4) connection integrated transporting discharging-1, integrated transporting discharging-2, and be connected with an end of the A/D module of capture card; The resistance R 4 of the output signal amplifier of zero resistance ammeter, the output of signal amplifier are received the other end of the A/D module of capture card.
5. according to the device of the described rapid evaluation reinforced concrete of claim 1 corrosion resistance, it is characterized in that, described control system comprises the hardware and software two large divisions, and hardware components comprises D/A module, relay R LA1, RLA2, triode Q1 and the Q2 of data card; Relay R LA1 connects the collector of triode Q1, the base stage of triode Q1 is connected the two ends of D/A module 1 by the emitter of variable resistor R1 and triode Q1, in like manner, relay R LA2 connects the collector of triode Q2, and the base stage of triode Q2 is connected the two ends of D/A module 2 by the emitter of variable resistor R2 and triode Q2; The output of the integrated converter of A/D module, D/A-1 module, D/A-2 module connects PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791154U CN201159716Y (en) | 2008-02-19 | 2008-02-19 | Device for fast assessing corrosion resistance of steel reinforced concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791154U CN201159716Y (en) | 2008-02-19 | 2008-02-19 | Device for fast assessing corrosion resistance of steel reinforced concrete |
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| CN201159716Y true CN201159716Y (en) | 2008-12-03 |
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| CNU2008200791154U Expired - Fee Related CN201159716Y (en) | 2008-02-19 | 2008-02-19 | Device for fast assessing corrosion resistance of steel reinforced concrete |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762453B (en) * | 2010-01-15 | 2011-09-14 | 浙江大学 | Accelerated test method of inbuilt electrode simulating non-uniform corrosion of steel bar in concrete |
| CN101782500B (en) * | 2010-01-15 | 2011-11-02 | 浙江大学 | Accelerated test method for simulating non-uniform corrosion of steel bar in reinforced concrete by external electrode |
| CN103257105A (en) * | 2013-05-31 | 2013-08-21 | 江西省电力科学研究院 | Soil corrosivity accelerated test method and device |
| CN104568732A (en) * | 2015-01-09 | 2015-04-29 | 南京钢铁股份有限公司 | Experimental device and testing method for rapidly determining corrosion rate of reinforcing steel bars |
| CN107192640A (en) * | 2017-07-12 | 2017-09-22 | 广西路桥工程集团有限公司 | Concrete soak test device |
| CN108469410A (en) * | 2016-06-05 | 2018-08-31 | 中交天津港湾工程研究院有限公司 | The detection method of reinforcement in concrete macro cell corrosion |
| KR102023553B1 (en) * | 2018-03-13 | 2019-09-20 | 주식회사 에너지아이 | Corrosion monitoring system |
| CN110672506A (en) * | 2019-10-12 | 2020-01-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Potential automatic monitoring system for accelerated corrosion of steel bar in concrete |
| CN112505608A (en) * | 2021-02-02 | 2021-03-16 | 中国测试技术研究院电子研究所 | Device and method for verifying sampling current of concrete chloride ion diffusion coefficient tester |
| CN113188984A (en) * | 2021-04-29 | 2021-07-30 | 青岛理工大学 | Intelligent monitoring system and method for corrosion state of steel bar in concrete |
-
2008
- 2008-02-19 CN CNU2008200791154U patent/CN201159716Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782500B (en) * | 2010-01-15 | 2011-11-02 | 浙江大学 | Accelerated test method for simulating non-uniform corrosion of steel bar in reinforced concrete by external electrode |
| CN101762453B (en) * | 2010-01-15 | 2011-09-14 | 浙江大学 | Accelerated test method of inbuilt electrode simulating non-uniform corrosion of steel bar in concrete |
| CN103257105B (en) * | 2013-05-31 | 2016-08-10 | 江西省电力科学研究院 | A kind of soil corrosivity acceleration test apparatus |
| CN103257105A (en) * | 2013-05-31 | 2013-08-21 | 江西省电力科学研究院 | Soil corrosivity accelerated test method and device |
| CN104568732B (en) * | 2015-01-09 | 2018-04-20 | 南京钢铁股份有限公司 | A kind of experimental provision and test method of quick measure reinforcement corrosion speed |
| CN104568732A (en) * | 2015-01-09 | 2015-04-29 | 南京钢铁股份有限公司 | Experimental device and testing method for rapidly determining corrosion rate of reinforcing steel bars |
| CN108469410A (en) * | 2016-06-05 | 2018-08-31 | 中交天津港湾工程研究院有限公司 | The detection method of reinforcement in concrete macro cell corrosion |
| CN107192640A (en) * | 2017-07-12 | 2017-09-22 | 广西路桥工程集团有限公司 | Concrete soak test device |
| CN107192640B (en) * | 2017-07-12 | 2023-10-03 | 广西路桥工程集团有限公司 | Concrete soaking test device |
| KR102023553B1 (en) * | 2018-03-13 | 2019-09-20 | 주식회사 에너지아이 | Corrosion monitoring system |
| CN110672506A (en) * | 2019-10-12 | 2020-01-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Potential automatic monitoring system for accelerated corrosion of steel bar in concrete |
| CN112505608A (en) * | 2021-02-02 | 2021-03-16 | 中国测试技术研究院电子研究所 | Device and method for verifying sampling current of concrete chloride ion diffusion coefficient tester |
| CN113188984A (en) * | 2021-04-29 | 2021-07-30 | 青岛理工大学 | Intelligent monitoring system and method for corrosion state of steel bar in concrete |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| EXPY | Termination of patent right or utility model |