CN221100431U - Reinforcement corrosion rate measuring device under tide area multi-ion coupling erosion effect - Google Patents
Reinforcement corrosion rate measuring device under tide area multi-ion coupling erosion effect Download PDFInfo
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- CN221100431U CN221100431U CN202322494411.8U CN202322494411U CN221100431U CN 221100431 U CN221100431 U CN 221100431U CN 202322494411 U CN202322494411 U CN 202322494411U CN 221100431 U CN221100431 U CN 221100431U
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 47
- 230000007797 corrosion Effects 0.000 title claims abstract description 42
- 238000005260 corrosion Methods 0.000 title claims abstract description 42
- 230000008878 coupling Effects 0.000 title claims abstract description 42
- 238000010168 coupling process Methods 0.000 title claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 42
- 230000000694 effects Effects 0.000 title claims abstract description 11
- 230000002787 reinforcement Effects 0.000 title description 3
- 238000012360 testing method Methods 0.000 claims abstract description 93
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004088 simulation Methods 0.000 claims abstract description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 27
- 230000009471 action Effects 0.000 claims abstract description 25
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 239000004567 concrete Substances 0.000 claims description 24
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 16
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 16
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000003926 complexometric titration Methods 0.000 claims description 3
- 238000002848 electrochemical method Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000003918 potentiometric titration Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000002798 spectrophotometry method Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000005837 radical ions Chemical class 0.000 claims description 2
- -1 sulfate radical ions Chemical class 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
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- 238000010998 test method Methods 0.000 description 3
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- 230000032258 transport Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of research on the key problem of the durability of reinforced concrete structures, and discloses a device for measuring the corrosion rate of a reinforced bar under the action of multi-ion coupling erosion in a tidal zone, which comprises a full-automatic simulation device for the multi-ion coupling erosion in the tidal zone of ocean and an electromigration device for accelerating the chloride ion transmission in the reinforced concrete; the full-automatic simulation device for the multi-ion coupling erosion effect of the ocean tidal zone comprises a test box, a test bearing platform, a water storage tank, an adjustable height test piece rack, a tidal cycle simulation system, a multi-ion solution concentration measurement system, a water-retaining plastic cover, an overflow port and an overflow pipe; the device can simulate the coupling erosion action of various ions in the ocean environment tidal zone more truly, effectively shortens the test period of the reinforced concrete corrosion test, can rapidly and accurately measure the reinforced concrete corrosion rate in the reinforced concrete under the coupling erosion action of the various ions in the ocean environment tidal zone, and has the advantages of simple structure, convenience in operation, low comprehensive cost and the like.
Description
Technical Field
The utility model relates to the technical field of research on the durability key problem of reinforced concrete structures, in particular to a device for measuring the corrosion rate of a reinforced bar under the action of multi-ion coupling erosion in a tidal zone.
Background
Reinforcement corrosion is one of the important factors affecting the durability of reinforced concrete structures. On one hand, the corrosion of the steel bars can reduce the bonding performance between the steel bars and the concrete so as to influence the bearing capacity of the reinforced concrete structure; on the other hand, the rust expansion product generated by the corrosion of the reinforced bar has expansion pressure on the concrete, and when the expansion pressure of the rust expansion product is larger than the ultimate tensile stress of the concrete, the cracking of the concrete protection layer can be initiated to influence the safety performance of the reinforced concrete structure. The steel bar corrosion rate is one of the most important parameters for evaluating the cracking time of a reinforced concrete cover. In addition, the service environment of the reinforced concrete structure is also an important factor directly affecting the durability thereof. The major factors affecting the durability of reinforced concrete structures in the marine environment are chloride ion, sulfate ion and magnesium ion attack. Research shows that chloride ions mainly damage the passivation film of the steel bar, thereby causing corrosion of the steel bar; the sulfate ion erosion causes the concrete expansion cracking, so that the physical and mechanical properties of the concrete are reduced; the magnesium ion corrosion reduces the pH value in the pore liquid of the concrete, promotes the accelerated decomposition of cement hydration products and accelerates the corrosion of the concrete. The water level shifting effect in real marine environments also accelerates the transport of ions within the concrete, thereby subjecting the reinforced concrete to more severe erosion. Therefore, research on the corrosion rate of the reinforced concrete under the coupling erosion action of chloride ions, sulfate ions and magnesium ions in the ocean tidal zone has important significance for the durability design and service life prediction of the reinforced concrete structure under the actual ocean multifactor coupling erosion environment.
Currently, natural exposure test, dry-wet cycle test, electromigration test, etc. are generally used for the measurement of the corrosion rate of steel bars. The dry-wet cycle test method and the electromigration test method can accelerate the transmission of chloride ions in the concrete so as to shorten the test period, but most of the methods are adopted for researching the corrosion rate of the steel bar only by considering the erosion effect of single chloride ions, and the multi-ion coupling erosion effect in the marine environment is not considered. In addition, few studies on multi-ion coupling erosion are conducted by immersing reinforced concrete test pieces in an erosion solution, and cannot respond to the corrosion rate of reinforced concrete in the marine tidal zone environment where the problem of durability is more serious. Regarding the natural exposure test method, chinese patent 201711338021.4 discloses a test device and method for researching the corrosion characteristics of the reinforcing bars in tidal zones of bridge piers, and although the method can obtain the corrosion characteristics of the reinforcing bars in the marine environment, the corrosion of the reinforcing bars in the reinforced concrete in the marine environment exposure condition usually occurs after more than ten years, and the method cannot accelerate chloride ions to enter the concrete, so that the measurement of the corrosion rate of the reinforcing bars is difficult to be performed in a short time, and the problem of long test period exists.
Disclosure of utility model
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a device for measuring the corrosion rate of a reinforced concrete structure under the action of multi-ion coupling erosion in a tidal zone, which has the advantages that the concentration of chloride ions, sulfate ions and magnesium ions can be measured while the tidal zone is simulated, so that the corrosion of the chloride ions to the reinforced concrete and the corrosion of the sulfate ions and the magnesium ions to the concrete under the action of multi-ion coupling erosion in the tidal zone can be considered simultaneously, the corrosion rate of the reinforced concrete in the concrete under the action of multi-ion coupling erosion in the tidal zone can be measured rapidly and accurately, the durability design and service life prediction of the reinforced concrete structure under the action of multi-ion coupling erosion in the ocean can be further carried out effectively and scientifically, and the problems that the coupling erosion action of the chloride ions, the sulfate ions and the magnesium ions to the reinforced concrete under the ocean environment is not considered when the corrosion rate of the reinforced concrete is measured in the conventional test device are solved, and the test period of measuring the corrosion rate of the reinforced concrete under the action of multi-ion coupling erosion in the ocean is not simulated in the actual ocean coupling erosion test.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: a device for measuring the corrosion rate of a steel bar under the action of multi-ion coupling erosion in a tidal zone comprises a full-automatic simulation device for the multi-ion coupling erosion in the tidal zone of ocean and an electromigration device for accelerating the transmission of chloride ions in reinforced concrete;
The full-automatic simulation device for the multi-ion coupling erosion effect of the ocean tidal zone comprises a test box, a test bearing platform, a water storage tank, an adjustable height test piece rack, a tidal cycle simulation system, a multi-ion solution concentration measurement system, a water-retaining plastic cover I, an overflow port and an overflow pipe; the test box is arranged above the test bearing platform, the water storage tank is arranged at the bottom of the test bearing platform, the height-adjustable test piece rack is arranged in the test box, the test box is communicated with the water storage tank through the tide circulation simulation system, the overflow port is formed in the upper part of the test box, and the overflow port is communicated with the water storage tank through the overflow pipe so as to prevent solution from overflowing in the tide circulation process;
The electromigration device for accelerating chloride ion transmission in reinforced concrete comprises a constant-voltage direct-current power supply, a wire, a deconcentrator, a stainless steel plate, a water-absorbing sponge, a plastic bottom plate, a water-retaining plastic cover II and a reinforced concrete test piece, wherein the stainless steel plate is arranged on the upper portion and the lower portion of the reinforced concrete test piece, the upper portion and the lower portion of the stainless steel plate are respectively connected with the negative electrode and the positive electrode of the constant-voltage direct-current power supply through the wire, the plastic bottom plate is fixedly connected with the lower portion of the stainless steel plate, and the water-retaining plastic cover II is arranged on the top of the stainless steel plate.
Preferably, the tide circulation simulation system comprises an anti-rust BPT pipe and a stepping motor water pump, wherein the test box is communicated with the water storage tank through the anti-rust BPT pipe, and the stepping motor water pump is arranged on the anti-rust BPT pipe.
Preferably, the tide circulation simulation system further comprises a liquid level height sensor, a flow controller and a stepper motor controller, wherein the liquid level height sensor is installed in the test box, the flow sensor is installed on the rust-proof BPT pipe, the liquid level height sensor and the flow sensor are respectively connected with the stepper motor controller, the stepper motor controller is connected with the flow controller, and the flow controller is connected with the stepper motor water pump.
Preferably, the solutions in the test box and the water storage tank are exchanged under the control of the tide cycle simulation system so as to realize the change of the liquid level in the test box and simulate the tide cycle in the marine environment; the height-adjustable test piece frame can be manually adjusted to change the position of a test piece and simulate different positions of the test piece in a tidal zone.
Preferably, the multi-ion solution concentration measuring system comprises a solution parameter monitoring probe, a solution parameter detector, a solution parameter display, a chloride ion concentration measuring instrument, a sulfate ion concentration measuring instrument and a magnesium ion concentration measuring instrument; the solution parameter monitoring probe is arranged in the test box, and the solution pH value, the solution temperature and the solution oxygen content parameters measured by the solution parameter detector are displayed by the solution parameter display for monitoring the multi-ion solution index in real time.
Preferably, the chloride ion concentration measuring instrument measures the chloride ion concentration in the solution and the test piece by a potentiometric titration method.
Preferably, the acid radical ion concentration measuring instrument and the magnesium ion concentration measuring instrument measure the concentration of sulfate radical ions and magnesium ions in the solution and the test piece respectively through spectrophotometry and complexometric titration.
Preferably, the reinforced concrete test piece comprises two parts, namely a to-be-detected reinforced bar and concrete, wherein the two ends of the to-be-detected reinforced bar are exposed out of the concrete, and one end of the to-be-detected reinforced bar is connected with a test wire for subsequent electrochemical measurement; and the exposed concrete part of the steel bar to be tested is tightly sleeved by PVC, and the gap between the steel bar to be tested and the PVC pipe and the surface of the steel bar to be tested are sealed by epoxy resin so as to prevent the exposed steel bar from rusting.
(III) beneficial effects
Compared with the prior art, the utility model provides a device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone, which has the following beneficial effects:
The device for measuring the corrosion rate of the reinforced concrete under the action of multi-ion coupling erosion in the tidal zone can simulate the coupling erosion action of various ions in the tidal zone in the marine environment more truly, effectively shortens the test period of the reinforced concrete corrosion test, can rapidly and accurately measure the corrosion rate of the reinforced concrete under the action of multi-ion coupling erosion in the tidal zone, and has the advantages of simple structure, convenience in operation, low comprehensive cost and the like.
Drawings
FIG. 1 is a schematic diagram of the front view of a fully automatic simulation device for the multi-ion coupling erosion in ocean tidal zones according to the present utility model;
FIG. 2 is a schematic top view of a fully automatic simulation device for multi-ion coupling erosion in ocean tidal zone according to the present utility model;
FIG. 3 is a schematic diagram of a tidal cycle simulation system of the full-automatic simulation device for the multi-ion coupling erosion effect in ocean tidal zones according to the present utility model;
FIG. 4 is a schematic diagram of an electrotransport device for accelerating chloride ion transport in reinforced concrete according to the present utility model;
FIG. 5 is a schematic diagram showing the structure of a system for measuring the concentration of a multi-ion solution according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-5, a device for measuring the corrosion rate of a steel bar under the action of multi-ion coupling erosion in a tidal zone comprises a full-automatic simulation device for multi-ion coupling erosion in a tidal zone of ocean and an electromigration device for accelerating the transport of chloride ions in reinforced concrete.
The full-automatic simulation device for the multi-ion coupling erosion effect of the ocean tidal zone comprises a test box 1, a test bearing platform 2, a water storage tank 3, a height-adjustable test piece rack 4, a tidal cycle simulation system 6, a multi-ion solution concentration measurement system 7, a water-retaining plastic cover 8, an overflow port 9 and an overflow pipe 10. The test box 1 is installed on the test platform 2, the water storage tank 3 is installed in the bottom of the test platform 2, the height-adjustable test piece frame 4 is installed in the test box 1, the tide circulation simulation system 6 is used for communicating the test box 1 with the water storage tank 3, and the multi-ion solution concentration measuring system 7 is installed in the test box 1. The upper part of the test chamber 1 is provided with an overflow port 9, and the overflow port 9 is communicated with the water storage tank 3 through an overflow pipe 10 so as to prevent the solution from overflowing during the tide circulation process.
The electromigration device for accelerating chloride ion transmission in reinforced concrete comprises a constant voltage direct current power supply 20, a lead 21, a deconcentrator 22, a stainless steel plate 23, a water-absorbing sponge 24, a plastic bottom plate 25, a water-retaining plastic cover II 26 and a reinforced concrete test piece 27, wherein the stainless steel plate 23 is respectively arranged at the upper part and the lower part of the reinforced concrete test piece 27, the stainless steel plates 23 at the upper part and the lower part are respectively connected with the negative pole and the positive pole of the constant voltage direct current power supply 20 through the lead 21, each acceleration test piece is connected with a circuit in parallel through the deconcentrator 22 so as to improve test efficiency, the test piece is insulated from the ground by the plastic bottom plate 25, and the water-retaining plastic cover II 26 is used for reducing water evaporation of the whole system.
The tide circulation simulation system 6 comprises an anti-rust BPT pipe 11 and a stepping motor water pump 12, the test box 1 is communicated with the water storage tank 3 through the anti-rust BPT pipe 11, and the stepping motor water pump 12 is arranged on the anti-rust BPT pipe 11. The tide circulation simulation system 6 further comprises a liquid level sensor 13, a flow sensor 14, a flow controller 15 and a stepping motor controller 16, wherein the liquid level sensor 13 is arranged in the test box 1, the flow sensor 14 is arranged on the rust-proof BPT pipe 11, the liquid level sensor 13 and the flow sensor 14 are respectively connected with the stepping motor controller 16, the stepping motor controller 16 is connected with the flow controller 15, and the flow controller is connected with the stepping motor water pump 12. The solutions in the test box 1 and the water storage tank 3 are exchanged under the control of the tide circulation simulation system 6 so as to realize the change of the liquid level in the test box 1 and simulate the tide circulation of the ocean environment; the height-adjustable test piece rack 4 can be manually adjusted to change the position of a test piece and simulate different positions of the test piece in a tidal zone.
The multi-ion solution concentration measuring system 7 comprises a solution parameter monitoring probe 17, a solution parameter detector 18, a solution parameter display 19, a chloride ion concentration measuring instrument 31, a sulfate ion concentration measuring instrument 32 and a magnesium ion concentration measuring instrument 33. The solution parameter monitoring probe is installed in the test box 1, and the solution parameters such as the solution pH value, the solution temperature, the solution oxygen content and the like measured by the solution parameter detector 18 are displayed by the solution parameter display 19, so as to monitor the relevant indexes of the multi-ion solution in real time. The chloride ion concentration meter 31 measures the chloride ion concentration in the solution and the test piece by a potentiometric titration method to consider the influence of chloride ion corrosion on the rust of the steel bars in the concrete. The sulfate ion concentration meter 32 and the magnesium ion concentration meter 33 measure the sulfate ion and magnesium ion concentrations in the solution and the test piece by spectrophotometry and complexometric titration respectively, so as to consider the influence of sulfate ion and magnesium ion erosion on the physical and mechanical properties of the concrete.
The reinforced concrete test piece 27 comprises two parts, namely a to-be-tested steel bar 28 and concrete, wherein the concrete is exposed at two ends of the to-be-tested steel bar 28, and one end of the to-be-tested steel bar 28 is connected with a test wire 29 for subsequent electrochemical measurement. In addition, the exposed concrete portion of the reinforcing bar 28 to be measured is tightly covered with a PVC pipe 30, and the gap between the reinforcing bar 28 to be measured and the PVC pipe 30 and the surface of the reinforcing bar 28 to be measured are sealed with epoxy resin to prevent the rust of the exposed reinforcing bar.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A device for measuring corrosion rate of steel bars under the action of multi-ion coupling erosion in a tidal zone is characterized in that: the device comprises a full-automatic simulation device for the multi-ion coupling erosion effect of the ocean tidal zone and an electromigration device for accelerating the chloride ion transmission in reinforced concrete;
The full-automatic simulation device for the multi-ion coupling erosion effect of the ocean tidal zone comprises a test box (1), a test bearing platform (2), a water storage tank (3), a height-adjustable test piece rack (4), a tidal cycle simulation system (6), a multi-ion solution concentration measurement system (7), a water-retaining plastic cover I (8), an overflow port (9) and an overflow pipe (10); the test box (1) is arranged above the test bearing platform (2), the water storage tank (3) is arranged at the bottom of the test bearing platform (2), the height-adjustable test piece rack (4) is arranged in the test box (1), the test box (1) and the water storage tank (3) are communicated through the tide circulation simulation system (6), the overflow port (9) is formed in the upper portion of the test box (1), and the overflow port (9) is communicated to the water storage tank (3) through the overflow pipe (10) so as to prevent solution from overflowing in the tide circulation process;
The electromigration device for accelerating chloride ion transmission in reinforced concrete comprises a constant voltage direct current power supply (20), a wire (21), a deconcentrator (22), a stainless steel plate (23), a water absorbing sponge (24), a plastic bottom plate (25), a water-retaining plastic cover II (26) and a reinforced concrete test piece (27), wherein the stainless steel plate (23) is arranged on the upper part and the lower part of the reinforced concrete test piece (27), the upper part and the lower part of the stainless steel plate (23) are respectively connected with the negative electrode and the positive electrode of the constant voltage direct current power supply (20) through the wire (21), the plastic bottom plate (25) is fixedly connected with the lower part of the stainless steel plate (23), and the water-retaining plastic cover II (26) is arranged on the top of the stainless steel plate (23).
2. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 1, wherein the device comprises: the tide circulation simulation system (6) comprises an anti-rust BPT pipe (11) and a stepping motor water pump (12), the test box (1) is communicated with the water storage tank (3) through the anti-rust BPT pipe (11), and the stepping motor water pump (12) is arranged on the anti-rust BPT pipe (11).
3. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 2, wherein the device comprises: the tide circulation simulation system (6) further comprises a liquid level height sensor (13), a flow sensor (14), a flow controller (15) and a stepping motor controller (16), wherein the liquid level height sensor (13) is installed in the test box (1), the flow sensor (14) is installed on the rust-proof BPT pipe (11), the liquid level height sensor (13) and the flow sensor (14) are respectively connected with the stepping motor controller (16), the stepping motor controller (16) is connected with the flow controller (15), and the flow controller is connected with the stepping motor water pump (12).
4. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 1, wherein the device comprises: the solutions in the test box (1) and the water storage tank (3) are exchanged under the control of the tide circulation simulation system (6) so as to realize the change of the liquid level in the test box (1) and simulate the tide circulation of the ocean environment; the height-adjustable test piece rack (4) can be manually adjusted to change the position of a test piece and simulate different positions of the test piece in a tidal zone.
5. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 1, wherein the device comprises: the multi-ion solution concentration measuring system (7) comprises a solution parameter monitoring probe (17), a solution parameter detector (18), a solution parameter display (19), a chloride ion concentration measuring instrument (31), a sulfate ion concentration measuring instrument (32) and a magnesium ion concentration measuring instrument (33); the solution parameter monitoring probe is arranged in the test box (1), and the solution pH value, the solution temperature and the solution oxygen content parameters measured by the solution parameter detector (18) are displayed by the solution parameter display (19) so as to monitor the multi-ion solution index in real time.
6. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 5, wherein the device comprises: the chloride ion concentration measuring instrument (31) measures the chloride ion concentration in the solution and the test piece by a potentiometric titration method.
7. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 5, wherein the device comprises: the acid radical ion concentration measuring instrument (32) and the magnesium ion concentration measuring instrument (33) respectively measure the concentration of sulfate radical ions and magnesium ions in the solution and the test piece through spectrophotometry and complexometric titration.
8. The device for measuring the corrosion rate of the steel bar under the action of multi-ion coupling erosion in a tidal zone according to claim 1, wherein the device comprises: the reinforced concrete test piece (27) comprises a to-be-detected steel bar (28) and concrete, wherein the concrete is exposed at two ends of the to-be-detected steel bar (28), and one end of the to-be-detected steel bar (28) is connected with a test wire (29) for subsequent electrochemical measurement; the exposed concrete part of the steel bar (28) to be tested is tightly sleeved by a PVC pipe (30), and the gap between the steel bar (28) to be tested and the PVC pipe (30) and the surface of the steel bar (28) to be tested are sealed by epoxy resin so as to prevent the exposed steel bar from rusting.
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| CN202322494411.8U CN221100431U (en) | 2023-09-13 | 2023-09-13 | Reinforcement corrosion rate measuring device under tide area multi-ion coupling erosion effect |
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| CN202322494411.8U CN221100431U (en) | 2023-09-13 | 2023-09-13 | Reinforcement corrosion rate measuring device under tide area multi-ion coupling erosion effect |
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