CN106757053B - 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
- CN106757053B CN106757053B CN201710005769.6A CN201710005769A CN106757053B CN 106757053 B CN106757053 B CN 106757053B CN 201710005769 A CN201710005769 A CN 201710005769A CN 106757053 B CN106757053 B CN 106757053B
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- CN
- China
- Prior art keywords
- electricity
- reinforced concrete
- concrete structure
- protective cover
- dechlorination
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Classifications
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- 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
Abstract
The invention discloses the methods that a kind of pair of reinforced concrete structure uniformity electricity moves dechlorination; its step includes: a, prepares electricity and move dechlorination device; it includes protective cover (1) and power supply, and the chamber of protective cover (1) is divided into the rectangular chamber (3) in center and the annular compartment (4) of surrounding；B, protective cover (1) is fitted in a side of reinforced concrete structure; there is the position of reinforcing bar (7) or stirrup on annular compartment (4) face side of protective cover (1) surrounding, and the rectangular chamber (3) in center is against the side no-reinforcing-bar (7) or the part without stirrup；C, two are opened simultaneously to switch and continue for some time；D, first switch is closed, continues to open second switch continuation a period of time.This method can move dechlorination to reinforced concrete structure uniformity electricity.
Description
Technical field
The present invention relates to the durable reparation fields of armored concrete, are especially a kind of pair of reinforced concrete structure uniformity electricity
The method for moving dechlorination.
Background technique
Coastal reinforced concrete structure is in the severe corrosive environment such as seawater and marine climate, is existed largely to reinforcing bar
Mordant chloride ion can reduce the engineering service life of reinforced concrete structure.For the engineering longevity for ensuring reinforced concrete structure
Life reaches desired century-old requirement when people's design, needs to carry out electricity to it to move dechlorination process.
The method that the electricity of the prior art moves dechlorination is that a protective cover is fixed on concrete surface, is equipped in protective cover
One piece of stainless steel plate is perfused with electrolyte solution in protective cover, is connected to a positive pole with stainless steel plate, power cathode with
Reinforcing bar connection in reinforced concrete structure.In this way, potential difference is generated between stainless steel plate and reinforcing bar, so that armored concrete knot
Electronegative chloride ion is mobile to anode in the concrete of structure, and the electrolyte solution of protective cover cavity is entered from concrete
Interior, which can effectively remove the chloride ion in reinforced concrete structure, and the reinforcing bar in reinforced concrete structure is avoided to be corroded.
But the electricity of the prior art moves dechlorination method there are a biggish limitation, and it is convenient for statement, in conjunction with Fig. 1 from bowing
Apparent direction illustrates the above problem, from the point of view of the overlook direction of reinforced concrete structure, leans on the horizontal section of concrete column
There are two reinforcing bars 101 in the position of a nearly side, and the side is fitted with protective cover 102, is equipped with a monolith not in protective cover 102
Become rusty steel plate 103, due to reinforcing bar 101 is cathode and the stainless steel plate 103 of entire plane is anode, from the point of view of space layout, from
Every 101 axis of reinforcing bar does a vertical line to stainless steel plate 103, and the route of the chloride ion transport of the region A of close vertical line is short, moves
The speed of shifting is fast, and slow compared with the path length of the chloride ion transport of far region, the speed of migration apart from this vertical line；In this way, often
Resulted in that chloride ion transport is uneven, the chloride ion close to the region A of vertical line is migrated, and the chlorine far from vertical line region from
Son still in addition some regions such as two vertical lines among region B chlorine ion concentration it is even former than dechlorination taller, therefore
The effect that dechlorinates is undesirable.Moreover, the premise of the reinforced concrete structure durability appraisal procedure based on Fick second law is exactly
Inside concrete chloride ion is uniformly distributed, and the limitation that the electricity of the prior art moves dechlorination technology causes electricity and moves after dechlorination in concrete
Portion's chloride ion non-uniform Distribution, so that electricity can not carry out accurate durability evaluating after moving dechlorination.
Summary of the invention
The invention solves a technical problem be to provide it is a kind of can prevent electricity from moving process is uneven, leads to chloride ion
The aliquant method that dechlorination is moved to reinforced concrete structure uniformity electricity.
A kind of technical solution of the invention is to provide the side that a kind of pair of reinforced concrete structure uniformity electricity moves dechlorination
Method, step include:
A, preparation moves dechlorination device with the electricity of flowering structure, it includes protective cover and power supply, and the bottom plate of protective cover is equipped with side
The chamber of protective cover is separated into the rectangular chamber in center and the annular compartment of surrounding, side by frame-type side partition, frame type side partition
It is provided with stainless steel square plate in shape chamber, stainless steel square ring flat-plate, the cathode and armored concrete of power supply are provided in annular compartment
The reinforcing bar of structure connects, and the anode of power supply is connect through the first conducting wire with stainless steel square ring flat-plate, and the first conducting wire is equipped with first switch,
The anode of power supply is connect through the second conducting wire with stainless steel square plate, and the second conducting wire is equipped with second switch；
B, protective cover is fitted in a side of reinforced concrete structure, the annular compartment face of the protective cover surrounding side
There is the position of reinforcing bar or stirrup on face, and the rectangular chamber in center is against the side no-reinforcing-bar or without the part of stirrup；
C, two switches are opened simultaneously, electricity is carried out to reinforced concrete structure and moves dechlorination, and is continued for some time；
D, first switch is closed, continues to open second switch, to reinforced concrete structure no-reinforcing-bar or without the region of stirrup
Continue electricity and moves dechlorination a period of time.
The present invention moves the method for dechlorination compared with prior art to reinforced concrete structure uniformity electricity, has following excellent
Point:
The working principle of this method is the stainless steel plate of original anode to be divided into two pieces of regions, firstly, first rank
Section is powered to central area and peripheral regions indifference, and the process that unified progress globality electricity moves dechlorination is located in this stage
The chloride ion of reinforcing bar and stirrup near zone is since migratory route is short, potential difference is big, migration velocity has been migrated out steel first fastly
Tendon concrete structure, but the intermediate chloride ion far from reinforcing bar or stirrup region still, even with the chloride ion in other region
It migrates and to become concentration bigger, starts this when to carry out second stage, that is, disconnected to the stainless steel square ring flat-plate of neighboring area
Electricity, but continue the stainless steel square plate power supply to middle section, increase the dechlorination time of middle section, specifically for getting rid of for property
Far from the chloride ion that reinforcing bar or stirrup region are accumulated, it ensure that electricity moves the uniformity except chlorine process, optimization electricity is moved except chlorine process
Effect.Moreover the above method can guarantee inside concrete chloride ion except the chloride ion in clean reinforced concrete structure naturally
Uniformly, to guarantee to can be carried out accurate durability evaluating after electricity moves dechlorination.
Detailed description of the invention
Fig. 1 is the vertical view schematic cross-sectional view for implementing the device for the method that prior art electricity moves dechlorination.
Fig. 2 is the configuration schematic diagram for implementing the protective cover of device for the method that electricity of the present invention moves dechlorination.
Fig. 3 is the vertical view schematic cross-sectional view for implementing the device for the method that electricity of the present invention moves dechlorination.
Fig. 4 is the positive structure diagram for implementing the device for the method that electricity of the present invention moves dechlorination.
As shown in the figure
Components 101, the reinforcing bar of prior art dechlorination device, 102, protective cover, 103, stainless steel plate, A, close vertical line
Region, the region among B, two vertical lines；
Components 1, the protective cover of dechlorination device of the present invention, 2, frame type side partition, 3, rectangular chamber, 4, annular compartment,
5, stainless steel square plate, 6, stainless steel square ring flat-plate, 7, reinforcing bar, the 8, second conducting wire, the 9, first conducting wire, 10, stirrup, A, close to vertical line
Region, the region among B, two vertical lines.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 2, Figure 3, Figure 4, the method that the present invention moves dechlorination to reinforced concrete structure uniformity electricity, step is such as
Under.
A, preparation moves dechlorination device with the electricity of flowering structure, it includes protective cover 1 and power supply, and the bottom plate of protective cover 1 is equipped with
The chamber of protective cover 1 is separated into the rectangular chamber 3 in center and the annular chamber of surrounding by frame type side partition 2, frame type side partition 2
Room 4 is provided with stainless steel square plate 5 in rectangular chamber 3, is provided with stainless steel square ring flat-plate 6 in annular compartment 4, the cathode of power supply with
The reinforcing bar 7 of reinforced concrete structure connects, and the anode of power supply is connect through the first conducting wire 9 with stainless steel square ring flat-plate 6, the first conducting wire 9
It is equipped with first switch, the anode of power supply is connect through the second conducting wire 8 with stainless steel square plate 5, and the second conducting wire 8 is equipped with second and opens
It closes.
B, protective cover 1 is fitted in a side of reinforced concrete structure, by taking reinforced concrete square columns as an example, square column packet
Include four vertical reinforcements 7 and multiple-layer horizontal to stirrup 10.For a complete square column, each side can be from lower past
It is upper to be bonded multiple protective covers 1, there is the position of reinforcing bar 7 or stirrup 10 on 4 face of annular compartment of each 1 surrounding of the protective cover side
It sets, and the rectangular chamber 3 in center is against the side no-reinforcing-bar 7 or the part without stirrup 10, specifically, the two of annular compartment 4
A vertical chamber is directed at two vertical reinforcements 7 of the side of reinforced concrete square columns and two lateral chambers are directed at armored concrete
Two layers of stirrup 10 of the side of square column.
C, two switches are opened simultaneously, electricity is carried out to reinforced concrete structure and moves dechlorination, and continues for some time such as 7~10
It.
D, first switch is closed, continues to open second switch, to reinforced concrete structure no-reinforcing-bar 7 or the area without stirrup 10
Domain continues electricity and moves dechlorination a period of time such as 7~10 days.
In other words, in terms of overlook direction, after step c, the chloride ion close to the region A of vertical line has been migrated
, and the chloride ion far from vertical line region still in addition some regions such as two vertical lines among region B chlorine ion concentration
It is even more taller than before dechlorinating, so step d targetedly carries out dechlorination process to the region B among two vertical lines.
Claims (1)
1. the method that a kind of pair of reinforced concrete structure uniformity electricity moves dechlorination, it is characterised in that: its step includes:
A, preparation moves dechlorination device with the electricity of flowering structure, it includes protective cover (1) and power supply, and the bottom plate of protective cover (1) is equipped with
The chamber of protective cover (1) is separated into the rectangular chamber (3) and surrounding in center by frame type side partition (2), frame type side partition (2)
Annular compartment (4), is provided with stainless steel square plate (5) in rectangular chamber (3), is provided with stainless steel square ring in annular compartment (4)
Plate (6), the cathode of power supply and the reinforcing bar (7) of reinforced concrete structure connect, and the anode of power supply is through the first conducting wire (9) and stainless steel
Square ring flat-plate (6) connection, the first conducting wire (9) are equipped with first switch, and the anode of power supply is through the second conducting wire (8) and stainless steel square plate
(5) it connects, the second conducting wire (8) is equipped with second switch；
B, protective cover (1) is fitted in a side of 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 rectangular chamber (3) in center against the side no-reinforcing-bar (7) or
Part without stirrup (10)；
C, two switches are opened simultaneously, electricity is carried out to reinforced concrete structure and moves dechlorination, and is continued for some time；
D, first switch is closed, continues to open second switch, to reinforced concrete structure no-reinforcing-bar (7) or the area without stirrup (10)
Domain continues 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 CN106757053A (en) | 2017-05-31 |
| CN106757053B true CN106757053B (en) | 2019-04-23 |
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ID=58950929
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| 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 |
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| Country | Link |
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| CN (1) | CN106757053B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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 |
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| Publication number | Publication date |
|---|---|
| CN106757053A (en) | 2017-05-31 |
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