CN106757053A - The method that dechlorination is moved to reinforced concrete structure uniformity electricity - Google Patents
The method that dechlorination is moved to reinforced concrete structure uniformity electricity Download PDFInfo
- Publication number
- CN106757053A CN106757053A CN201710005769.6A CN201710005769A CN106757053A CN 106757053 A CN106757053 A CN 106757053A CN 201710005769 A CN201710005769 A CN 201710005769A CN 106757053 A CN106757053 A CN 106757053A
- Authority
- CN
- China
- Prior art keywords
- electricity
- dechlorination
- reinforced concrete
- concrete structure
- protective cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006298 dechlorination reaction Methods 0.000 title claims abstract description 39
- 230000005611 electricity Effects 0.000 title claims abstract description 35
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims description 23
- 239000010935 stainless steel Substances 0.000 claims description 23
- 241000370738 Chlorion Species 0.000 description 15
- 239000004567 concrete Substances 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000037427 ion transport Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010021703 Indifference Diseases 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
- C23F2201/02—Concrete, e.g. reinforced
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
- C23F2213/22—Constructional parts or assemblies of the anodic or cathodic protection apparatus characterized by the ionic conductor, e.g. humectant, hydratant or backfill
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
The invention discloses a kind of method for moving dechlorination to reinforced concrete structure uniformity electricity, its step includes：A, prepare electricity and move dechlorination device, it includes protective cover (1) and power supply, and the chamber of protective cover (1) is divided into the square chamber (3) in center and the annular compartment (4) of surrounding；B, the side that protective cover (1) is fitted in reinforced concrete structure; the annular compartment (4) of protective cover (1) surrounding is just to the position for having reinforcing bar (7) or stirrup on the side, and the square chamber (3) in center opposite the side no-reinforcing-bar (7) or the part without stirrup；C, while open two switch and continue for some time；D, closing first switch, continue to open second switch continuation a period of time.The method can move dechlorination to reinforced concrete structure uniformity electricity.
Description
Technical field
It is especially a kind of electric to reinforced concrete structure uniformity the present invention relates to the durable reparation field of armored concrete
The method for moving dechlorination.
Background technology
Coastal reinforced concrete structure is in the severe corrosive environments such as seawater and marine climate, is existed a large amount of to reinforcing bar
Mordant chlorion, can reduce the engineering life-span of reinforced concrete structure.To ensure the engineering longevity of reinforced concrete structure
Life reaches desired a century when people design and requires, it is necessary to carrying out electricity to it moves dechlorination process.
The method that the electricity of prior art moves dechlorination is that a protective cover is fixed on into concrete surface, is provided with protective cover
One piece of stainless steel plate, is perfused with electrolyte solution in protective cover, connected with stainless steel plate with a positive source, power cathode with
Reinforcing bar connection in reinforced concrete structure.So, electrical potential difference is produced between stainless steel plate and reinforcing bar so that armored concrete knot
Electronegative chlorion is moved to positive pole in the concrete of structure, and the electrolyte solution of protective cover cavity is entered into from concrete
Interior, the device can effectively remove the chlorion in reinforced concrete structure, it is to avoid the reinforcing bar in reinforced concrete structure is corroded.
But, the electricity of prior art moves dechlorination method in the presence of a larger limitation, is convenient statement, with reference to Fig. 1 from bowing
Apparent direction illustrates above mentioned problem, from the point of view of the overlook direction of reinforced concrete structure, is leaned on the horizontal section of concrete column
There are two reinforcing bars 101 position of a nearly side, and the side is fitted with protective cover 102, protective cover 102 and is provided with a monoblock not
Rust steel plate 103, because reinforcing bar 101 is negative pole, the stainless steel plate 103 of whole plane is positive pole, from the point of view of space layout, from
Every axis of reinforcing bar 101 does a vertical line to stainless steel plate 103, near the route of the chloride ion transport of the region A of vertical line it is short, move
The speed of shifting is fast, and slow compared with the speed of the path length of the chloride ion transport of far region, migration apart from this vertical line；So, often
Resulted in that chloride ion transport is uneven, the chlorion near the region A of vertical line is migrated, and away from vertical line region chlorine from
Son still in, or even region B chlorine ion concentration of some regions such as in the middle of two vertical lines be even more taller in the past than dechlorination, therefore
Dechlorination effect is undesirable.And, the premise of the reinforced concrete structure durability appraisal procedure based on Fick second laws is exactly
Inside concrete chlorion is uniformly distributed, and the limitation that the electricity of prior art moves dechlorination technology causes electricity and moves after dechlorination in concrete
Portion's chlorion non-uniform Distribution, so that electricity cannot carry out accurate durability evaluating after moving dechlorination.
The content of the invention
The invention solves the problems that a technical problem be to provide one kind can prevent electricity from moving process is uneven, cause chlorion
The aliquant method that dechlorination is moved to reinforced concrete structure uniformity electricity.
A kind of technical solution of the invention is to provide a kind of side that dechlorination is moved to reinforced concrete structure uniformity electricity
Method, its step includes：
A, the electricity for preparing following structure move dechlorination device, and it includes protective cover and power supply, the base plate side of being provided with of protective cover
The chamber of protective cover is separated into frame-type side dividing plate, frame type side dividing plate the square chamber in center and the annular compartment of surrounding, side
Stainless steel square plate is provided with shape chamber, stainless steel square ring flat-plate, the negative pole and armored concrete of power supply are provided with annular compartment
The bar connecting of structure, the positive pole of power supply is connected through the first wire with stainless steel square ring flat-plate, and the first wire is provided with first switch,
The positive pole of power supply is connected through the second wire with stainless steel square plate, and the second wire is provided with second switch；
B, the side that protective cover is fitted in reinforced concrete structure, the annular compartment of protective cover surrounding is just to the side
There is the position of reinforcing bar or stirrup on face, and part of the square chamber in center against the side no-reinforcing-bar or without stirrup；
C, while open two switch, electricity is carried out to reinforced concrete structure and moves dechlorination, and continued for some time；
D, first switch is closed, continue to open second switch, to reinforced concrete structure no-reinforcing-bar or the region without stirrup
Proceed electricity and move dechlorination a period of time.
The present invention dechlorination is moved to reinforced concrete structure uniformity electricity method compared with prior art, with following excellent
Point：
The operation principle of the method is that the stainless steel plate of original positive pole divide into two pieces of regions, first, first rank
Section is powered to central area and peripheral regions indifference, and unification carries out the process that globality electricity moves dechlorination, in this stage, is located at
The chlorion of reinforcing bar and stirrup near zone is because migratory route is short, electrical potential difference is big, migration velocity has been migrated out steel first soon
Tendon concrete structure, but centre away from reinforcing bar or stirrup region chlorion still, even with the chlorion in other region
Migrate and to become concentration bigger, proceed by second stage this when, that is, the stainless steel square ring flat-plate of neighboring area is broken
Electricity, but continue to power the stainless steel square plate of middle section, increase the dechlorination time of middle section, specifically designed for getting rid of for property
Away from the chlorion that reinforcing bar or stirrup region are piled up, it is ensured that electricity moves the uniformity except chlorine process, optimization electricity is moved except chlorine process
Effect.Moreover, the above method can guarantee that inside concrete chlorion naturally except the chlorion in clean reinforced concrete structure
Uniformly, so as to ensure that electricity can carry out accurate durability evaluating after moving dechlorination.
Brief description of the drawings
Fig. 1 is the vertical view cross section structure diagram of the device for implementing the method that prior art electricity moves dechlorination.
Fig. 2 is the configuration schematic diagram of the protective cover of the device for implementing the method that electricity of the present invention moves dechlorination.
Fig. 3 is the vertical view cross section structure diagram of the device for implementing the method that electricity of the present invention moves dechlorination.
Fig. 4 is the positive structure diagram of the device for implementing the method that electricity of the present invention moves dechlorination.
Shown in figure
The parts 101, reinforcing bar of prior art dechlorination device, 102, protective cover, 103, stainless steel plate, A, near vertical line
Region, the region in the middle of B, two vertical lines；
The parts 1, protective cover of dechlorination device of the present invention, 2, frame type side dividing plate, 3, square chamber, 4, annular compartment,
5th, stainless steel square plate, 6, stainless steel square ring flat-plate, 7, reinforcing bar, the 8, second wire, the 9, first wire, 10, stirrup, A, near vertical line
Region, the region in the middle of B, two vertical lines.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 2, Figure 3, Figure 4, the method that the present invention moves dechlorination to reinforced concrete structure uniformity electricity, its step is such as
Under.
A, the electricity for preparing following structure move dechlorination device, and it includes protective cover 1 and power supply, and the base plate of protective cover 1 is provided with
The chamber of protective cover 1 is separated into frame type side dividing plate 2, frame type side dividing plate 2 the square chamber 3 in center and the annular chamber of surrounding
Room 4, is provided with square chamber 3 and stainless steel square ring flat-plate 6 is provided with stainless steel square plate 5, annular compartment 4, the negative pole of power supply with
The reinforcing bar 7 of reinforced concrete structure is connected, and the positive pole of power supply is connected through the first wire 9 with stainless steel square ring flat-plate 6, the first wire 9
First switch is provided with, the positive pole of power supply is connected through the second wire 8 with stainless steel square plate 5, and the second wire 8 is provided with second and opens
Close.
B, the side that protective cover 1 is fitted in reinforced concrete structure, by taking reinforced concrete square columns as an example, square column bag
Include four vertical reinforcements 7 and multiple-layer horizontal to stirrup 10.For the square column complete to, each side can be from lower past
The upper multiple protective covers 1 of laminating, the position of the annular compartment 4 of each surrounding of protective cover 1 just to having reinforcing bar 7 or stirrup 10 on the side
Put, and part of the square chamber 3 in center against the side no-reinforcing-bar 7 or without stirrup 10, specifically, the two of annular compartment 4
Individual vertical chamber is directed at two vertical reinforcements 7 of the side of reinforced concrete square columns and two horizontal chambers are directed at armored concrete
The two-layer stirrup 10 of the side of square column.
C, while open two switch, electricity is carried out to reinforced concrete structure and moves dechlorination, and continue for some time such as 7~10
My god.
D, first switch is closed, continue to open second switch, to reinforced concrete structure no-reinforcing-bar 7 or the area without stirrup 10
Domain proceeds electricity and moves dechlorination a period of time such as 7~10 days.
In other words, from terms of overlook direction, by step c after, the chlorion near the region A of vertical line has been migrated
, and away from vertical line region chlorion still in or even region B chlorine ion concentration of some regions such as in the middle of two vertical lines
It is even more taller than before dechlorination, so step d targetedly carries out dechlorination process to the region B in the middle of two vertical lines.
Claims (1)
1. a kind of method that dechlorination is moved to reinforced concrete structure uniformity electricity, it is characterised in that：Its step includes：
A, the electricity for preparing following structure move dechlorination device, and it includes protective cover (1) and power supply, and the base plate of protective cover (1) is provided with
The chamber of protective cover (1) is separated into the square chamber (3) and surrounding in center for frame type side dividing plate (2), frame type side dividing plate (2)
Annular compartment (4), is provided with square chamber (3) in stainless steel square plate (5), annular compartment (4) and is provided with stainless steel square ring
Plate (6), the negative pole of power supply is connected with the reinforcing bar (7) of reinforced concrete structure, and the positive pole of power supply is through the first wire (9) and stainless steel
Square ring flat-plate (6) connection, the first wire (9) is provided with first switch, and the positive pole of power supply is through the second wire (8) and stainless steel square plate
(5) connect, the second wire (8) is provided with second switch；
B, the side that protective cover (1) is fitted in reinforced concrete structure, the annular compartment (4) of protective cover (1) surrounding is just
To the position for having reinforcing bar (7) or stirrup (10) on the side, and the square chamber (3) in center against the side no-reinforcing-bar (7) or
Part without stirrup (10)；
C, while open two switch, electricity is carried out to reinforced concrete structure and moves dechlorination, and continued for some time；
D, first switch is closed, continue to open second switch, to reinforced concrete structure no-reinforcing-bar (7) or the area without stirrup (10)
Domain proceeds electricity and moves dechlorination a period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005769.6A CN106757053B (en) | 2017-01-05 | 2017-01-05 | The method that dechlorination is moved to reinforced concrete structure uniformity electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005769.6A CN106757053B (en) | 2017-01-05 | 2017-01-05 | The method that dechlorination is moved to reinforced concrete structure uniformity electricity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106757053A true CN106757053A (en) | 2017-05-31 |
| CN106757053B CN106757053B (en) | 2019-04-23 |
Family
ID=58950929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710005769.6A Active CN106757053B (en) | 2017-01-05 | 2017-01-05 | The method that dechlorination is moved to reinforced concrete structure uniformity electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106757053B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974684A (en) * | 2017-11-07 | 2018-05-01 | 浙江大学宁波理工学院 | A kind of sunpender to arched bridge pre-stressed boom carries out the device that electricity moves dechlorination |
| CN108004552A (en) * | 2017-11-07 | 2018-05-08 | 浙江大学宁波理工学院 | The electric device for moving dechlorination is carried out to the sunpender of arched bridge pre-stressed boom |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3794574A (en) * | 1972-04-27 | 1974-02-26 | Us Interior | Device for cathodically protecting metal conduit system |
| CN102926349A (en) * | 2012-11-09 | 2013-02-13 | 中交四航工程研究院有限公司 | Method for repairing and reinforcing harbour engineering concrete structure based on electrochemical desalting |
| CN203782238U (en) * | 2014-04-29 | 2014-08-20 | 浙江大学宁波理工学院 | Electro-migrating dechlorinating corrosion inhibiting device of planar reinforced concrete structure |
| CN205313669U (en) * | 2016-01-29 | 2016-06-15 | 浙江大学宁波理工学院 | Carry out electricity to concrete aggregate and move equipment except that chlorine |
-
2017
- 2017-01-05 CN CN201710005769.6A patent/CN106757053B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3794574A (en) * | 1972-04-27 | 1974-02-26 | Us Interior | Device for cathodically protecting metal conduit system |
| CN102926349A (en) * | 2012-11-09 | 2013-02-13 | 中交四航工程研究院有限公司 | Method for repairing and reinforcing harbour engineering concrete structure based on electrochemical desalting |
| CN203782238U (en) * | 2014-04-29 | 2014-08-20 | 浙江大学宁波理工学院 | Electro-migrating dechlorinating corrosion inhibiting device of planar reinforced concrete structure |
| CN205313669U (en) * | 2016-01-29 | 2016-06-15 | 浙江大学宁波理工学院 | Carry out electricity to concrete aggregate and move equipment except that chlorine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974684A (en) * | 2017-11-07 | 2018-05-01 | 浙江大学宁波理工学院 | A kind of sunpender to arched bridge pre-stressed boom carries out the device that electricity moves dechlorination |
| CN108004552A (en) * | 2017-11-07 | 2018-05-08 | 浙江大学宁波理工学院 | The electric device for moving dechlorination is carried out to the sunpender of arched bridge pre-stressed boom |
| CN107974684B (en) * | 2017-11-07 | 2019-06-18 | 浙江大学宁波理工学院 | The sunpender of a kind of pair of arched bridge pre-stressed boom carries out the device that electricity moves dechlorination |
| CN108004552B (en) * | 2017-11-07 | 2019-08-09 | 浙江大学宁波理工学院 | The device that electricity moves dechlorination is carried out to the sunpender of arched bridge pre-stressed boom |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106757053B (en) | 2019-04-23 |
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