CN104498963A - Marine concrete buried high-activity sacrificial anode - Google Patents
Marine concrete buried high-activity sacrificial anode Download PDFInfo
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- CN104498963A CN104498963A CN201410748504.1A CN201410748504A CN104498963A CN 104498963 A CN104498963 A CN 104498963A CN 201410748504 A CN201410748504 A CN 201410748504A CN 104498963 A CN104498963 A CN 104498963A
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Abstract
The invention discloses a marine concrete buried high-activity sacrificial anode. The marine concrete buried high-activity sacrificial anode comprises an anode body, a metal conducting wire and a mortar body which completely coats the anode body, wherein the metal conducting wire extends from the interior of the anode body to the outside of the mortar body, the mortar body comprises portland cement, a fine aggregate, water, fiber, a water-absorbing material and an ionic activator, and the water-cement ratio of the mortar body is (0.40-0.70): 1; the cement-sand ratio is (0.20-0.40): 1; the fiber is glass fiber or carbon fiber and the doping amount is 0.3%-3% of the mass of the portland cement; the water-absorbing material is vermiculite powder or bentonite, and the doping amount is 10%-35% of the mass of the portland cement; and the ionic activator is lithium bromide or sodium chloride, and the doping amount is 20%-40% of the mass of the portland cement. The product disclosed by the invention has the advantages of simple structure and convenient mounting, and can eliminate the laying of the mortar on the surface of a reinforced concrete structure, reduce the engineering quantity and perform mounting and maintenance without professional staff. The sacrificial anode disclosed by the invention can protect steel bars in a chlorine-containing environment.
Description
Technical field
The present invention relates to a kind of Steel Concrete protection against corrosion sacrificial anode product, particularly a kind of maritime concrete embed type high reactivity sacrificial anode used under salt contaminate environment and deicer salts condition.
Background technology
Skeleton construction is the structure formation be most widely used at present.Usual reinforced concrete structure durability is excellent.But coastland and the skeleton construction number wrecked because spreading cryosel surprising, lose huge.In order to prevent or control the corrosion of reinforcement in concrete, extend the work-ing life of concrete steel building, according to anticorrosion mechanism, proposed multiple sfgd..Wherein galvanic protection is the most effective technology of generally acknowledged prevention reinforcement in concrete corrosion.
In concrete structures, impressed current cathode protection method is widely used.But; impressed current cathode protection method system is comparatively complicated; at run duration palpus special messenger maintenance and management, the damage of plant and instrument and anode system and maintenance and management are not good at the inefficacy that all can cause a whole set of cathodic protection system, and are not suitable for prestressed reinforced concrete structure.It is simple that the feature that steel reinforced concrete sacrificial anode is protected mainly contains structure; easy for installation; be easy to maintenance and management and overprotection phenomenon etc. can not be produced, not being only applicable to the anti-corrosion protection that ordinary reinforced concrete structure is also applicable to prestressed reinforced concrete structure.
Sacrificial protection is connected with reinforcing bar by material (sacrificial anode) stronger for electronegativity; form loop by concrete layer, provide electric current that reinforcing bar polarized as motivating force by anode material dissolving by the potential difference between anode and reinforcing bar and reach protection to protection potential.If sacrifice positive metal be directly placed in concrete or be positioned over outside concrete surface, because concrete resistivity is very large, be difficult between anode metal and reinforcing bar form enough protective currents.And anodic corrosion product is not only harmful to concrete, and anode may be caused to lose activity, and causes anode to lose efficacy.Therefore be necessary to develop a kind of corrosion product that can not only dissolve sacrificial anode electric conduction mortar that resistivity is less simultaneously, develop a kind of maritime concrete embed type high reactivity sacrificial anode of easy for installation, Be very effective in conjunction with sacrificial anode metal and electric conduction mortar.
Publication number is that the Chinese utility model patent of CN201292406Y discloses a kind of Imbed-in sacrificial zinc alloy anode, its feature is that the cylindrical anode body of sacrificial zinc alloy anode is cast in cylindrical anode bag, and the symmetrical steel wire iron core of sacrificial zinc alloy anode is exposed to outside anode bag.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of easy to use and effective maritime concrete embed type sacrificial anode.
The technical solution adopted for the present invention to solve the technical problems is: maritime concrete embed type high reactivity sacrificial anode, it comprises: anode bodies, plain conductor and the body of being wrapped up completely by anode bodies in the inner, described plain conductor is internally extended by described anode bodies until outside described body, described body is made up of silicate cement, fine aggregate, water, fiber, water-absorbing material and ionic activator, and the water cement ratio of described body is (0.40 ~ 0.70): 1; , cement-sand ratio is (0.20 ~ 0.40): 1; , described fiber is glass fibre or carbon fiber, and its volume is 0.3% ~ 3% of silicate cement quality; Described water-absorbing material is vermiculite power, and volume is 10% ~ 35% of silicate cement quality; Ionic activator is lithiumbromide or sodium-chlor, and volume is 20% ~ 40% of silicate cement quality.
Preferably, described anode bodies adopts pure zinc or zinc alloy as anode material.
Preferably, described plain conductor is iron wire, and the part that iron wire exposes to outside body is fixed on reinforcing bar for colligation.
Preferably, the short glass fiber of described glass fibre to be length be 3 ~ 7mm, its volume is 0.3% ~ 3% of cement quality.
Preferably, the water cement ratio 0.625:1 of described body.
Preferably, the cement-sand ratio 0.3:1 of described body.
Preferably, described maritime concrete embed type high reactivity sacrificial anode is microscler bar shape, and described anode bodies is arranged along the longitudinal central axis line of microscler pile body.
The application method of maritime concrete embed type high reactivity sacrificial anode, it comprises the following steps:
Make as above arbitrary described maritime concrete embed type high reactivity sacrificial anode, anode bodies is fixed in the middle of mortar mold, plain conductor is fixed on anode bodies two ends, then in mortar mold, high reactivity mortar is inserted, jolt ramming, floating, form removal after natural curing is shaped, obtains maritime concrete embed type high reactivity sacrificial anode;
For the reinforcing bar in project under construction, by described plain conductor, the colligation of maritime concrete embed type high reactivity sacrificial anode is fixed on the reinforcing bar of needs protection before concrete placement after reinforcing bar binding completes, then casting concrete.
The application method of maritime concrete embed type high reactivity sacrificial anode, it comprises the following steps:
Make as above arbitrary described maritime concrete embed type high reactivity sacrificial anode, anode bodies is fixed in the middle of mortar mold, plain conductor is fixed on anode bodies two ends, then in mortar mold, high reactivity mortar is inserted, jolt ramming, floating, form removal after natural curing is shaped, obtains maritime concrete embed type high reactivity sacrificial anode;
For the reinforcing bar in built engineering, first cut part concrete and expose one section of reinforcing bar, by described plain conductor, the colligation of maritime concrete embed type high reactivity sacrificial anode is fixed on the reinforcing bar of needs protection, fills up by the part cut with fresh concrete.
Sacrificial anode of the present invention both can not produce harm to concrete, can ensure that again sacrificial anode is permanently effective, can stop the reinforcement corrosion in concrete.Relative Chinese patent CN201292406Y; this patent profile adopts elongated rod, increases maritime concrete embed type high reactivity sacrificial anode and concrete contact area, be conducive to the dissolving of anode; increase the sectional area that ion passes through, reduce resistance and increase protective current.
Product structure of the present invention is simple, easy for installation, removes from and lays mortar on skeleton construction surface, reduces quantities, must professional's installation and maintenance.Sacrificial anode of the present invention can protect the reinforcing bar in chloride environment, and keeps high reactivity for a long time, and solving common sacrificial anode inside concrete, surface passivation can occur, and causes the problem of protective current deficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is sacrificial anode one-piece construction schematic diagram of the present invention.
Fig. 2 is application implementation schematic diagram of the present invention.
1. plain conductors, 2. anode bodies, 3. mortar in figure, 4. maritime concrete embed type high reactivity sacrificial anode, 5. concrete, 6. reinforcing bar.
Embodiment
Embodiment 1
This example is the Production Example of maritime concrete embed type high reactivity sacrificial anode of the present invention.
Be illustrated in figure 1 maritime concrete embed type high reactivity sacrificial anode of the present invention, appearance is long bar shape, it body 3 comprising anode bodies 2, plain conductor 1 and wrapped up completely by anode bodies 2 in the inner.Plain conductor 1 is connected with anode bodies 2 and stretches out in outside body 3.
Anode bodies adopts zinc or zinc alloy material, is roughly long 13 centimetres, wide 1 centimetre, high 1 centimetre.Plain conductor 1 is iron wire preferably, can be directly fixed on anode bodies two ends, also can adopt the mode imbedded.Such as offer groove along anode bodies axis, imbedded by plain conductor wherein, plain conductor two ends are exposed.Anode bodies support is fixed in the middle of mortar mold, and fixes plain conductor, then in mortar mold, insert active mortar, jolt ramming, floating.Self-curing form removal after 48 hours, namely obtains about length 16 centimetres as shown in Figure 1, wide 4 centimetres, the sacrificial anode of high 4 centimetres.
Body is made up of silicate cement, aggregate, water, fiber, water-absorbing material and ionic activator, and the water cement ratio of described body is (0.40 ~ 0.70): 1; Cement-sand ratio is (0.20 ~ 0.40): 1; Described fiber is glass fibre or carbon fiber, and its volume is 0.3% ~ 3% of cement quality; Water-absorbing material is vermiculite power or wilkinite, and volume is 10% ~ 35% of cement quality; Ionic activator is lithiumbromide or sodium-chlor, and volume is 20% ~ 40% of cement quality.Concrete formula can see the following form 1:
Table 1
Embodiment 2
This example for according to embodiment 1 be numbered 1 ~ 4 formula obtain maritime concrete embed type high reactivity sacrificial anode be applied in project under construction need protect reinforcing bar on.
After reinforcing bar binding completes before concrete placement, with plain conductor 1 by the colligation of maritime concrete embed type high reactivity sacrificial anode 4 on reinforcing bar, then press normal construction program casting concrete.
Embodiment 3
This example for according to embodiment 1 be numbered 1 ~ 4 formula obtain maritime concrete embed type high reactivity sacrificial anode be applied in built engineering need protect reinforcing bar on.Shown in Fig. 2, first cut part concrete, expose wherein one section of reinforcing bar, with plain conductor 1 by the colligation of maritime concrete embed type high reactivity sacrificial anode 4 on reinforcing bar 6, fill up by the part cut with fresh concrete 5.
High reactivity mortar can not only the oxidation products of solving zinc, and has good electroconductibility.Thus ensure that zinc can constantly dissolve, provide electric current to protect the reinforcing bar in concrete.
Claims (9)
1. maritime concrete embed type high reactivity sacrificial anode, it is characterized in that comprising: anode bodies, plain conductor and the body of anode bodies being wrapped up completely in the inner, described plain conductor is internally extended by described anode bodies until outside described body, described body is made up of silicate cement, fine aggregate, water, fiber, water-absorbing material and ionic activator, and the water cement ratio of described body is (0.40 ~ 0.70): 1; , cement-sand ratio is (0.20 ~ 0.40): 1; , described fiber is glass fibre or carbon fiber, and its volume is 0.3% ~ 3% of silicate cement quality; Described water-absorbing material is vermiculite power or wilkinite, and volume is 10% ~ 35% of silicate cement quality; Ionic activator is lithiumbromide or sodium-chlor, and volume is 20% ~ 40% of silicate cement quality.
2. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: described anode bodies adopts pure zinc or zinc alloy as anode material.
3. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: described plain conductor is iron wire, and the part that iron wire exposes to outside body is fixed on reinforcing bar for colligation.
4. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: the short glass fiber of described glass fibre to be length be 3 ~ 7mm, its volume is 0.3% ~ 3% of cement quality.
5. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: the water cement ratio 0.625:1 of described body.
6. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: the cement-sand ratio 0.3:1 of described body.
7. maritime concrete embed type high reactivity sacrificial anode according to claim 1, is characterized in that: described maritime concrete embed type high reactivity sacrificial anode is microscler bar shape, and described anode bodies is arranged along the longitudinal central axis line of microscler pile body.
8. the application method of maritime concrete embed type high reactivity sacrificial anode, is characterized in that comprising the following steps:
Make as arbitrary in claim 1 ~ 7 as described in maritime concrete embed type high reactivity sacrificial anode, anode bodies is fixed in the middle of mortar mold, plain conductor is fixed on anode bodies two ends, then in mortar mold, high reactivity mortar is inserted, jolt ramming, floating, form removal after natural curing is shaped, obtains maritime concrete embed type high reactivity sacrificial anode;
For the reinforcing bar in project under construction, by described plain conductor, the colligation of maritime concrete embed type high reactivity sacrificial anode is fixed on the reinforcing bar of needs protection before concrete placement after reinforcing bar binding completes, then casting concrete.
9. the application method of maritime concrete embed type high reactivity sacrificial anode, is characterized in that comprising the following steps:
Make as arbitrary in claim 1 ~ 7 as described in maritime concrete embed type high reactivity sacrificial anode, anode bodies is fixed in the middle of mortar mold, plain conductor is fixed on anode bodies two ends, then in mortar mold, high reactivity mortar is inserted, jolt ramming, floating, form removal after natural curing is shaped, obtains maritime concrete embed type high reactivity sacrificial anode;
For the reinforcing bar in built engineering, first cut part concrete and expose one section of reinforcing bar, by described plain conductor, the colligation of maritime concrete embed type high reactivity sacrificial anode is fixed on the reinforcing bar of needs protection, fills up by the part cut with fresh concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410748504.1A CN104498963B (en) | 2014-12-09 | 2014-12-09 | Maritime concrete flush type high activity sacrificial anode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410748504.1A CN104498963B (en) | 2014-12-09 | 2014-12-09 | Maritime concrete flush type high activity sacrificial anode |
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| CN104498963A true CN104498963A (en) | 2015-04-08 |
| CN104498963B CN104498963B (en) | 2017-08-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757058A (en) * | 2016-12-23 | 2017-05-31 | 上海法赫桥梁隧道养护工程技术有限公司 | A kind of armored concrete anti-corrosion sacrificial anode |
| CN110467378A (en) * | 2019-08-05 | 2019-11-19 | 西安建筑科技大学 | A kind of structure and corrosion control function are in the new concrete of one |
| CN115304323A (en) * | 2022-07-21 | 2022-11-08 | 中交四航工程研究院有限公司 | Conductive mortar and preparation method and application thereof |
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| CN101109087A (en) * | 2007-08-22 | 2008-01-23 | 青岛双瑞防腐防污工程有限公司 | Anodic sacrifice protection method of steel reinforced concrete bridge pier |
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| CN102418101A (en) * | 2011-11-29 | 2012-04-18 | 青岛双瑞海洋环境工程有限公司 | Composite type sacrificial anode for repairing reinforced concrete structures |
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| CN201292405Y (en) * | 2008-03-28 | 2009-08-19 | 水利部交通部电力工业部南京水利科学研究院 | Steel reinforced concrete sacrificial anode/cathodic protection apparatus in atmospheric environment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757058A (en) * | 2016-12-23 | 2017-05-31 | 上海法赫桥梁隧道养护工程技术有限公司 | A kind of armored concrete anti-corrosion sacrificial anode |
| CN110467378A (en) * | 2019-08-05 | 2019-11-19 | 西安建筑科技大学 | A kind of structure and corrosion control function are in the new concrete of one |
| CN110467378B (en) * | 2019-08-05 | 2021-11-09 | 西安建筑科技大学 | Concrete with structure and corrosion control function integrated |
| CN115304323A (en) * | 2022-07-21 | 2022-11-08 | 中交四航工程研究院有限公司 | Conductive mortar and preparation method and application thereof |
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| CN104498963B (en) | 2017-08-08 |
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Effective date of registration: 20180102 Address after: 510230 Guangzhou Qianjin Road, Guangdong, No. 157 Co-patentee after: CCCC Fourth Harbor Engineering Co., Ltd. Patentee after: Zhongjiao Sihang Engineering Inst. Co., Ltd. Co-patentee after: Guangzhou Harbor Engineering Quality Examination Co., Ltd. Address before: 510230 Guangzhou Qianjin Road, Guangdong, No. 157 Co-patentee before: Guangzhou Harbor Engineering Quality Examination Co., Ltd. Patentee before: Zhongjiao Sihang Engineering Inst. Co., Ltd. Co-patentee before: Guangzhou Sihang Material Technology Co., Ltd. Co-patentee before: CCCC Fourth Harbor Geotechnical Engineering Co., Ltd. |