CN106554164A - Suitable for the WHDF H type corrosion-resistant agents of maritime concrete - Google Patents
Suitable for the WHDF H type corrosion-resistant agents of maritime concrete Download PDFInfo
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- CN106554164A CN106554164A CN201611010483.9A CN201611010483A CN106554164A CN 106554164 A CN106554164 A CN 106554164A CN 201611010483 A CN201611010483 A CN 201611010483A CN 106554164 A CN106554164 A CN 106554164A
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- whdf
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a kind of WHDF H type corrosion-resistant agents suitable for maritime concrete, its component is as follows, and each component content percentage is：Crystallization excites component 16 22%；Activity excitation component 12 16%；Tricalcium aluminate constituents for suppressing 13 17%；Corrosion resistant component 10 15%；Preventing microorganism component 2 6%；Water 30 40%.The WHDF H types corrosion-resistant agent of the present invention is by promoting hydrated cementitious degree, optimization hydrated product, suppress tricalcium aluminate early stage fast hydration, reduce the effect such as early hydration heat, the system gel of making increases, and hole declines, and aggregate interfacial structure and the early stage heat of hydration are improved, while concrete anticracking, impervious and durability is significantly improved, the decay resistance of concrete mix is effectively improved.
Description
Technical field
The invention belongs to maritime concrete technical field, relates particularly to a kind of WHDF-H types corrosion-resistant agent.
Background technology
In the environment that deicer salts are sprayed on ocean, underground water or surface, xoncrete structure often suffers harmful ion around
Erosion damage.There is data to show, erosion damage is the main cause that concrete produces destruction.Improve concrete corrosion resistant performance
Method mainly have：Reduce water-cement ratio, Adding Mineral Admixtures, the protection of concrete surface coating, addition chemical admixture etc..Its
In, reduce water-cement ratio and Adding Mineral Admixtures can be effectively increased concrete itself packing, but such method is vulnerable to original
The impact of the factor such as material and construction；And aging or cracking phenomena then easily occurs in face coat, so range of application is relatively limited.
Armored concrete produces the infiltration that the main inducing of steel bar corrosion is chlorion.After chlorion invades inside concrete, it is possible to decrease
The pH value of surrounding concrete, destroys rebar surface passivating film, and can form corroding electrode, causes reinforcing bar to be damaged.Meanwhile, work as coagulation
After local products life sulfate attack destruction, in concrete bodies, easily there are a large amount of cracks, now the seepage velocity of chlorion is accelerated.Mesh
Before, improve the most simple and effective technical measures of concrete corrosion resistant ability and as mix corrosion-resistant agent.Occur on domestic market
The product of some corrosion-resistant agents, but this kind of corrosion-resistant agent often do not have in terms of the steel bar corrosion that chloride permeability is caused is resisted
Special specific aim composition, simply plays inhibitory action.But the active principle in these corrosion-resistant agents mostly is nitrite, due to
There are some negative effects in nitrite, so the scope of application is restricted.It can be seen that, a kind of safety non-toxic is developed, can be delayed
Steel bar corrosion can improve the corrosion-resistant agent of concrete sulfate-resistant corrosion ability again, have great importance.
The content of the invention
The technical problem to be solved is that a kind of WHDF-H types proposed for above-mentioned prior art are corrosion-resistant
Agent, which has good workability and endurance quality, is effectively improved the mechanical property and deformation performance of concrete after hardening, has
Cracking resistance, subtract the effect for oozing and improving durability.
The present invention solves the technical scheme that adopted of above-mentioned technical problem：
Suitable for the WHDF-H type corrosion-resistant agents of maritime concrete, its component is as follows, each component content weight percent
It is calculated as：Crystallization excites component 16-22%；Activity excitation component 12-16%；Tricalcium aluminate constituents for suppressing 13-17%；Corrosion resistant component
10-15%；Preventing microorganism component 2-6%；Water 30-40%.
Described crystallization excites component for alum or calgon.
Described activity excitation component is semi-hydrated gypsum or green vitriol.
Described tricalcium aluminate constituents for suppressing is boric acid or ardealite.
Described corrosion resistant component is sodium nitrate or calcium nitrite.
Described preventing microorganism component is urea or waterglass.
The present invention WHDF-H type corrosion-resistant agents using volume be：(post-cast strip is mixed to the 1%-2% of concrete cement amount
Solidifying soil cement amount 2.5%).
The key reaction mechanism of the present invention and the effect of each part are：Crystallization in powder excite component and water and
Calcium silicates in clinker reacts, and forms modified calcium silicate hydrate (M-C-S-H) and plug-hole deposit；Activity excitation
Component excites active addition (free calcium, SiO in concrete in flyash2And Al2O3Deng) activity, make them
With Ca (OH)2Secondary hydration is carried out, hydrated calcium silicate (C-S-H) and calcium aluminosilicate hydrate mineral (C is generated3AS2Hn)；Tricalcium aluminate
Constituents for suppressing forms a kind of complex compound at the aquation initial stage with part tricalcium aluminate in concrete, and (this complex compound is a kind of non-stable
Compound, with Ca (OH) in system2Increase and gradually decompose so that tricalcium aluminate is gradually able to aquation in the aquation later stage),
Optionally inhibit the fast hydration of aquation early stage tricalcium aluminate to react, both ensure that the abundant of dicalcium silicate and tricalcium silicate
Aquation, reduces the heat of hydration and drying shrinkage in earlier systems again；Corrosion resistant component can be postponed reinforcement in concrete and corrosion is occurred
Time, when corrosion occurs, reduce the rusting rate of reinforcing bar；Preventing microorganism component Main Function is that to allow microorganism not colonize in mixed
Coagulate the surface of soil and weather.
Above-mentioned effect is to increase the gel (C-S-H and M-C-S-H) in concrete system, density increase, under porosity
The cohesive force and density of drop, Behavior of Hardened Cement Paste and its aggregate interface strengthens, and produces good interfacial effect.Meanwhile, the water of early stage
Change heat and drying shrinkage decline, the service behaviour of concrete also be improved significantly.Therefore, make concrete that there is good corrosion resistance
Energy.
The beneficial effects of the present invention is：The WHDF-H types corrosion-resistant agent of the present invention is by promoting hydrated cementitious degree, excellent
Change hydrated product, suppress tricalcium aluminate early stage fast hydration, reduce the effect such as early hydration heat, the system gel of making increases, hole
Decline, aggregate interfacial structure and the early stage heat of hydration are improved, significantly improve concrete anticracking, impervious and durability it is same
When, it is effectively improved the decay resistance of concrete mix.
Description of the drawings
Fig. 1 is the figure of the cement paste divergence after mixing the WHDF-H type corrosion-resistant agents prepared by the embodiment of the present invention
Piece；
Fig. 2 is the picture of the cement paste divergence for being not incorporated into WHDF-H type corrosion-resistant agents；
Fig. 3 is the scanning electron microscope (SEM) photograph of the interface fracture sample after mixing WHDF-H type corrosion-resistant agents；
Fig. 4 is the scanning electron microscope (SEM) photograph of the interface fracture sample of the cement paste divergence for being not incorporated into WHDF-H type corrosion-resistant agents；
Fig. 5 is that the concrete test block after mixing WHDF-H type corrosion-resistant agents soaks exterior view after 90d；
Fig. 6 is exterior view after the concrete test block immersion 90d for being not incorporated into WHDF-H type corrosion-resistant agents.
Specific embodiment
Detailed specific description is done to the present invention with reference to specific embodiment, but protection scope of the present invention not office
It is limited to following examples.
WHDF-H type corrosion-resistant agents provided in the present invention, WH- technological invention units " Wuhan Institute of Chemical Technology " (are now renamed
" Wuhan Engineering Univ ") English alphabet abbreviation, DF- water blockoff waterproof material codes, during-H is characterized for maritime concrete, below
Abbreviation WHDF-H.
Embodiment 1
The component and its percentage by weight of WHDF-H be：
Wherein, it is calgon that crystallization excites component, and activity excitation component is green vitriol, and tricalcium aluminate constituents for suppressing is phosphorus
Gypsum, corrosion resistant component are sodium nitrate, and preventing microorganism component is urea.
WHDF-H is to form said components hybrid reaction, and its using method is together with glue during concrete-agitating
Gel material is added together.
Embodiment 2
The component and its percentage by weight of WHDF-H be：
Wherein, it is alum that crystallization excites component, and activity excitation component is semi-hydrated gypsum, and tricalcium aluminate constituents for suppressing is boron
Acid, corrosion resistant component are calcium nitrite, and preventing microorganism component is waterglass, and using method is with embodiment 1.
Embodiment 3
The component and its percentage by weight of WHDF-H be：
Wherein, it is calgon that crystallization excites component, and activity excitation component is green vitriol, and tricalcium aluminate constituents for suppressing is phosphorus
Gypsum, corrosion resistant component are sodium nitrate, and preventing microorganism component is urea, and using method is with embodiment 1.
Embodiment 4
The component and its percentage by weight of WHDF-H be：
Wherein, it is alum that crystallization excites component, and activity excitation component is semi-hydrated gypsum, and tricalcium aluminate constituents for suppressing is boron
Acid, corrosion resistant component are calcium nitrite, and preventing microorganism component is urea, and using method is with embodiment 1.
Experimental result
With the WHDF-H type corrosion-resistant agents of embodiment 1-4, maritime concrete bittern soak test is carried out, result of the test is such as
Under：
1 each embodiment concrete of table soaks compression strength experimental result in bittern
Test shows：The concrete crushing strength for not mixing WHDF-H declines 29%, and fills the concrete anti-compression of WHDF-H
Intensity only declines 0.01-0.02%, and this is hydrated cementitious degree, optimization aquation can be promoted to produce due to WHDF-H types corrosion-resistant agent
Thing, suppresses tricalcium aluminate early stage fast hydration, reduces early hydration heat, and the system gel of making increases, and hole declines, aggregate interface knot
Structure and the early stage heat of hydration are improved, so as to significantly improve the decay resistance of concrete.
Fig. 1 and Fig. 2 are the comparison diagram mixed with do not mix WHDF-H type corrosion-resistant agent cement paste divergences (when 5 days)；Fig. 1 tables
It is bright：After mixing WHDF-H type corrosion-resistant agents, mix water conservation function of slump protection is good, and bleeding is moderate, does not isolate, and does not also produce crack；Fig. 2
Show：Do not mix the mix of WHDF-H type corrosion-resistant agents and not only bleeding but also isolated, and produce crack.
Fig. 3 and Fig. 4 are ESEM (SEM) comparison diagram mixed with do not mix WHDF-H type corrosion-resistant agents interface fracture sample；Fig. 3
Show, after mixing WHDF-H type corrosion-resistant agents, the transition zone loose structure of concrete and microcrack are effectively improved；Fig. 4 shows,
There is obvious microcrack and pore in the concrete interface fracture for not mixing WHDF-H type corrosion-resistant agents.
Fig. 5 and Fig. 6 are to mix to soak surface after 90d with the super high-rise pumping concrete test block for not mixing WHDF-H type corrosion-resistant agents
Relatively；Fig. 5 shows that, after mixing WHDF-H type corrosion-resistant agents, concrete surface is smooth, and Fig. 6 shows, does not mix WHDF-H type corrosion resistants
There is corrosion and peels off in the concrete surface of erosion agent.
Claims (6)
1., suitable for the WHDF-H type corrosion-resistant agents of maritime concrete, it is characterised in that its component is as follows, each component content is by weight
Amount percentage is calculated as：Crystallization excites component 16-22%；Activity excitation component 12-16%；Tricalcium aluminate constituents for suppressing 13-17%；
Corrosion resistant component 10-15%；Preventing microorganism component 2-6%；Water 30-40%.
2. WHDF-H type corrosion-resistant agents suitable for maritime concrete according to claim 1, it is characterised in that：Described
Crystallization excites component for alum or calgon.
3. WHDF-H type corrosion-resistant agents suitable for maritime concrete according to claim 1, it is characterised in that：Described
Activity excitation component is semi-hydrated gypsum or green vitriol.
4. WHDF-H type corrosion-resistant agents suitable for maritime concrete according to claim 1, it is characterised in that：Described
Tricalcium aluminate constituents for suppressing is boric acid or ardealite.
5. WHDF-H type corrosion-resistant agents suitable for maritime concrete according to claim 1, it is characterised in that：Described
Corrosion resistant component is sodium nitrate or calcium nitrite.
6. WHDF-H type corrosion-resistant agents suitable for maritime concrete according to claim 1, it is characterised in that：Described
Preventing microorganism component is urea or waterglass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010483.9A CN106554164A (en) | 2016-11-17 | 2016-11-17 | Suitable for the WHDF H type corrosion-resistant agents of maritime concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611010483.9A CN106554164A (en) | 2016-11-17 | 2016-11-17 | Suitable for the WHDF H type corrosion-resistant agents of maritime concrete |
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| CN106554164A true CN106554164A (en) | 2017-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341604A (en) * | 2018-02-07 | 2018-07-31 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
Citations (3)
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|---|---|---|---|---|
| CN101234868A (en) * | 2007-12-10 | 2008-08-06 | 闫炳润 | Bitumen-base infiltration crystallization type cement concrete waterproof antiseptic agent |
| CN102491670A (en) * | 2011-11-22 | 2012-06-13 | 武汉工程大学 | WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete |
| CN102503214A (en) * | 2011-11-22 | 2012-06-20 | 武汉工程大学 | WHDF type concrete inorganic crack-resisting permeability-educing agent |
-
2016
- 2016-11-17 CN CN201611010483.9A patent/CN106554164A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234868A (en) * | 2007-12-10 | 2008-08-06 | 闫炳润 | Bitumen-base infiltration crystallization type cement concrete waterproof antiseptic agent |
| CN102491670A (en) * | 2011-11-22 | 2012-06-13 | 武汉工程大学 | WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete |
| CN102503214A (en) * | 2011-11-22 | 2012-06-20 | 武汉工程大学 | WHDF type concrete inorganic crack-resisting permeability-educing agent |
Non-Patent Citations (1)
| Title |
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| 李明福等: "《宁夏中南部隧洞工程地质研究》", 31 January 2016 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341604A (en) * | 2018-02-07 | 2018-07-31 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
| CN108341604B (en) * | 2018-02-07 | 2019-09-17 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
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Effective date of registration: 20180416 Address after: 430205, 16 floor, science and technology incubator building, Wuhan Institute of Technology, Wuhan, Hubei. Applicant after: Wuhan Tianyi new materials Co. Ltd. Address before: 430418 Wangji street, Wangji street, Xinzhou District, Wuhan, Hubei Applicant before: Wuhan Tianyi Group Co., Ltd. |
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Application publication date: 20170405 |
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