CN110526611A - Concrete corrosion resistant agent and preparation method thereof - Google Patents
Concrete corrosion resistant agent and preparation method thereof Download PDFInfo
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- CN110526611A CN110526611A CN201810506906.9A CN201810506906A CN110526611A CN 110526611 A CN110526611 A CN 110526611A CN 201810506906 A CN201810506906 A CN 201810506906A CN 110526611 A CN110526611 A CN 110526611A
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- corrosion resistant
- resistant agent
- concrete
- concrete corrosion
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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
-
- 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 present invention relates to a kind of concrete corrosion resistant agent and preparation method thereof, wherein concrete corrosion resistant agent, by weight part comprising: aluminate cement: 70-90 parts；Soluble inorganic calcium salt: 5-15 parts；Mineral admixture: 4-15 parts；Nano silica: 1-5 parts.Concrete corrosion resistant agent of the invention has no adverse effect to concrete performance, can generate stable hydrated product with erosion ionic reaction, have efficient retardance solidification to corrosive ions.Each age strength that concrete can also be improved, reduces the permeability of concrete.
Description
Technical field
The present invention relates to a kind of the field of building materials, more particularly to a kind of concrete corrosion resistant agent and preparation method thereof.
Background technique
Many concrete structures are prematurely destroyed, Acceptable life due to its lasting reciprocation with corrosive environment
It reduces.Steel bar corrosion is the most important factor for causing architectural engineering to break ring.Countries in the world need to repair due to steel bar corrosion
Concrete structure, take a large amount of resource.The main reason for reinforcement corrosion is the corrosion function of chloride ion.Cement-based material
Physics and chemical process influence transmission of the chloride ion inside Behavior of Hardened Cement Paste.Corrosion inhibitor, which is used as, prevents concrete erosion and reinforcing bar from becoming rusty
The main safeguard measure of erosion.
Aluminate cement has good corrosion resistance and capture chloride ion performance, but aluminate is added directly into coagulation
Rheological property and the condensation, Temperature measurement that mixture can be changed in soil, cause difficulty to construction.
Summary of the invention
It is a primary object of the present invention to provide a kind of novel concrete corrosion resistant agent and preparation method thereof, to be solved
The technical issues of be make its improve concrete anti-chlorine ion erosion performance, reduce the permeability of concrete, thus more suitable for
It is practical.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of concrete corrosion resistant agent, by weight part comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Mineral admixture: 4-15 parts；
Nano silica: 1-5 parts.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, concrete corrosion resistant agent above-mentioned, wherein the aluminate cement is CA50 cement.
Preferably, concrete corrosion resistant agent above-mentioned, wherein 20 DEG C of solubility of the soluble inorganic calcium salt is greater than
Equal to 10g.
Preferably, concrete corrosion resistant agent above-mentioned, wherein the mineral admixture is flyash, slag, silicon ash and partially
At least one of kaolin.
Preferably, concrete corrosion resistant agent above-mentioned, wherein the partial size of the nano silica is 1-100nm.
Also the following technical solution is employed for the object of the invention to solve the technical problems to realize.It proposes according to the present invention
A kind of concrete corrosion resistant agent preparation method comprising:
Aluminate cement, soluble inorganic calcium salt and water are stirred, mixture is obtained；
The mixture is placed into 25-30d, it is dry, with mineral admixture grinding to 300-400m2Nanometer is added in/kg
Silica mixing, obtains concrete corrosion resistant agent；
Wherein, the concrete corrosion resistant agent, by weight part comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Mineral admixture: 4-15 parts；
Nano silica: 1-5 parts.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the preparation method of concrete corrosion resistant agent above-mentioned, wherein the mixture, by weight part,
Include:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Water: 80-100 parts.
Preferably, the preparation method of concrete corrosion resistant agent above-mentioned, wherein the aluminate cement is CA50 cement；
20 DEG C of solubility of the soluble inorganic calcium salt is more than or equal to 10g；
The mineral admixture is at least one of flyash, slag, silicon ash and metakaolin；
The partial size of the nano silica is 1-100nm.
Preferably, the preparation method of concrete corrosion resistant agent above-mentioned, wherein the temperature of the drying is 30-40 DEG C.
By above-mentioned technical proposal, concrete corrosion resistant agent of the present invention and preparation method thereof is at least had the advantage that
1) aluminate cement and inorganic calcium salt reaction generate X-AFm and X-Aft in concrete corrosion resistant agent of the invention, are having
Cl-In existing environment, X-AFm or X-Aft and Cl-Reaction generates Cl-AFm or Cl-Aft, plays solidification Cl-Effect.Mineral
The filling effect that admixture and nano silica are not only due to its own makes concrete more closely knit, can also slowly join
With hydration reaction, the hydrated product of generation can further fill concrete, permeability reduces, and reduces Cl in concrete-Intrusion
Amount.
2) concrete corrosion resistant agent of the present invention can be under various chlorine ion concentrations, especially in concrete in marine environment
Reinforcing bar play the role of corrosion protection, can be effectively reduced the probability and degree of Rust of Rebar in Concrete, resistance rust effect is good,
It can be improved the Concrete Structure Design service life.Realize the long life serve of high resistance to corrosion aluminate cement sill.It reduces mixed
The permeability of soil is coagulated, it is nontoxic, environmentally friendly.
3) preparation method of concrete corrosion resistant agent of the invention is easy, compared with traditional corrosion inhibitor, to concrete performance without
Adverse effect, reduces the permeability of concrete, nontoxic, environmentally friendly.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the XRD diagram before and after concrete corrosion resistant agent curing of chloride ion.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to concrete corrosion resistant agent proposed according to the present invention and preparation method thereof its specific embodiment, knot
Structure, feature and its effect, detailed description is as follows.In the following description, different " embodiment " or " embodiment " refers to different
It surely is the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable form group
It closes.
A kind of concrete corrosion resistant agent that one embodiment of the present of invention proposes, by weight part comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Mineral admixture: 4-15 parts；
Nano silica: 1-5 parts.
Preferably, aluminate cement is CA50 cement.
20 DEG C of solubility of soluble inorganic calcium salt is more than or equal to 10g.
Mineral admixture is at least one of flyash, slag, silicon ash and metakaolin.
The partial size of nano silica is 1-100nm.
A kind of preparation method for concrete corrosion resistant agent that another embodiment of the present invention proposes comprising:
By 70-90 parts of aluminate cements, 5-15 parts of soluble inorganic calcium salts and 80-100 parts of water stirrings, mixture is obtained；
The mixture is placed into 25-30d, 30-40 DEG C of drying, with 4-15 parts of mines under 10-30 DEG C of environment temperature
Object admixture grinding is to 300-400m2/ kg is added 1-5 parts of nano silica mixing, obtains concrete corrosion resistant agent.
It hinders rust principle are as follows: aluminate cement and inorganic calcium salt reaction generate X-AFm and X-Aft, are there is Cl-Existing ring
In border, X-AFm or X-Aft and Cl-Reaction generates Cl-AFm or Cl-Aft, plays solidification Cl-Effect.As shown in Figure 1, curve 1
For the XRD diagram before concrete corrosion resistant agent curing of chloride ion, curve 2 is the XRD diagram after concrete corrosion resistant agent curing of chloride ion,
Chloride ion retardance curing component reacts with chloride ion and forms new product afterwards for 24 hours in corrosion inhibitor, illustrate the corrosion inhibitor to chlorine from
Son has retardance solidification well.
The filling effect that mineral admixture and nano silica are not only due to its own makes concrete more closely knit, also
Can slowly participate in hydration reaction, the hydrated product of generation can further fill concrete, permeability reduces, and reduces coagulation
Cl in soil-Intrusion volume.
Embodiment 1
A kind of preparation method for concrete corrosion resistant agent that one embodiment of the present of invention proposes comprising:
By 75 parts of aluminate cements, 10 parts of soluble inorganic calcium salts and 80 parts of water stirrings, mixture is obtained；Mixture is put
Set 28d, 30 DEG C of dryings, with 12 parts of mineral admixture grindings to 330m2/ kg is added 3 parts of nano silica mixing, is mixed
Solidifying soil corrosion inhibitor.
A kind of concrete corrosion resistant agent that another embodiment of the present invention proposes, is prepared by the method for embodiment 1, with weight
Measure component meter comprising:
Aluminate cement: 75 parts；
Soluble inorganic calcium salt: 10 parts；
Mineral admixture: 12 parts；
Nano silica: 3 parts.
Embodiment 2
A kind of preparation method for concrete corrosion resistant agent that one embodiment of the present of invention proposes comprising:
By 85 parts of aluminate cements, 8 parts of soluble inorganic calcium salts and 100 parts of water stirrings, mixture is obtained；Mixture is put
Set 30d, 40 DEG C of dryings, with 5 parts of mineral admixture grindings to 390m2/ kg is added 2 parts of nano silica mixing, obtains coagulation
Native corrosion inhibitor.
A kind of concrete corrosion resistant agent that another embodiment of the present invention proposes, is prepared by the method for embodiment 2, with weight
Measure component meter comprising:
Aluminate cement: 85 parts；
Soluble inorganic calcium salt: 8 parts；
Mineral admixture: 5 parts；
Nano silica: 2 parts.
Embodiment 3
A kind of preparation method for concrete corrosion resistant agent that one embodiment of the present of invention proposes comprising:
By 80 parts of aluminate cements, 9 parts of soluble inorganic calcium salts and 90 parts of water stirrings, mixture is obtained；Mixture is put
Set 25d, 30 DEG C of dryings, with 10 parts of mineral admixture grindings to 350m2/ kg is added 1 part of nano silica mixing, is mixed
Solidifying soil corrosion inhibitor.
A kind of concrete corrosion resistant agent that another embodiment of the present invention proposes, is prepared by the method for embodiment 3, with weight
Measure component meter comprising:
Aluminate cement: 80 parts；
Soluble inorganic calcium salt: 9 parts；
Mineral admixture: 10 parts；
Nano silica: 1 part.
The concrete corrosion resistant agent of embodiment 1-3 is incorporated into C40 strength grade concrete, wherein concrete corrosion resistant agent
Volume is that the mass percent of concrete gel material is 4%.Compared with the concrete for not mixing concrete corrosion resistant agent, incorporation is mixed
The working performance, mechanical property and anti-permeability performance for coagulating the concrete of soil corrosion inhibitor are as shown in table 1.Wherein, concrete resistance is not mixed
The impermeability of the concrete of rust agent is P8.
Table 1 mixes working performance, mechanical property and the anti-permeability performance of the concrete of concrete corrosion resistant agent
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (9)
1. a kind of concrete corrosion resistant agent, which is characterized in that by weight part comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Mineral admixture: 4-15 parts；
Nano silica: 1-5 parts.
2. concrete corrosion resistant agent according to claim 1, which is characterized in that the aluminate cement is CA50 cement.
3. concrete corrosion resistant agent according to claim 1, which is characterized in that 20 DEG C of the soluble inorganic calcium salt
Solubility is more than or equal to 10g.
4. concrete corrosion resistant agent according to claim 1, which is characterized in that the mineral admixture is flyash, mine
At least one of slag, silicon ash and metakaolin.
5. concrete corrosion resistant agent according to claim 1, which is characterized in that the partial size of the nano silica is 1-
100nm。
6. a kind of preparation method of concrete corrosion resistant agent, characterized in that it comprises:
Aluminate cement, soluble inorganic calcium salt and water are stirred, mixture is obtained；
The mixture is placed into 25-30d, it is dry, with mineral admixture grinding to 300-400m2Nano-silica is added in/kg
SiClx mixing, obtains concrete corrosion resistant agent；
Wherein, the concrete corrosion resistant agent, by weight part comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Mineral admixture: 4-15 parts；
Nano silica: 1-5 parts.
7. the preparation method of concrete corrosion resistant agent according to claim 6, which is characterized in that the mixture, with weight
Measure component meter comprising:
Aluminate cement: 70-90 parts；
Soluble inorganic calcium salt: 5-15 parts；
Water: 80-100 parts.
8. the preparation method of concrete corrosion resistant agent according to claim 6, which is characterized in that the aluminate cement is
CA50 cement；
20 DEG C of solubility of the soluble inorganic calcium salt is more than or equal to 10g；
The mineral admixture is at least one of flyash, slag, silicon ash and metakaolin；
The partial size of the nano silica is 1-100nm.
9. the preparation method of concrete corrosion resistant agent according to claim 6, which is characterized in that the temperature of the drying is
30-40℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810506906.9A CN110526611A (en) | 2018-05-24 | 2018-05-24 | Concrete corrosion resistant agent and preparation method thereof |
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| CN201810506906.9A CN110526611A (en) | 2018-05-24 | 2018-05-24 | Concrete corrosion resistant agent and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1176125A1 (en) * | 2000-07-24 | 2002-01-30 | Akzo Nobel N.V. | Corrosion inhibitor for cementitious compositions |
| WO2003042466A1 (en) * | 2001-11-13 | 2003-05-22 | Brown Paul W | A method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures |
| CN101239792A (en) * | 2008-03-12 | 2008-08-13 | 中南大学 | Additive for increasing cement-base material solidifying dissociative chlorine ion capability and applying method thereof |
| CN105000856A (en) * | 2015-07-21 | 2015-10-28 | 山东宏艺科技股份有限公司 | Cementing material for marine concrete |
| CN106380099A (en) * | 2016-11-29 | 2017-02-08 | 北京宝辰联合科技有限公司 | Chloride ion adsorption agent for reinforced concrete structure and preparation method thereof |
-
2018
- 2018-05-24 CN CN201810506906.9A patent/CN110526611A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1176125A1 (en) * | 2000-07-24 | 2002-01-30 | Akzo Nobel N.V. | Corrosion inhibitor for cementitious compositions |
| WO2003042466A1 (en) * | 2001-11-13 | 2003-05-22 | Brown Paul W | A method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures |
| CN101239792A (en) * | 2008-03-12 | 2008-08-13 | 中南大学 | Additive for increasing cement-base material solidifying dissociative chlorine ion capability and applying method thereof |
| CN105000856A (en) * | 2015-07-21 | 2015-10-28 | 山东宏艺科技股份有限公司 | Cementing material for marine concrete |
| CN106380099A (en) * | 2016-11-29 | 2017-02-08 | 北京宝辰联合科技有限公司 | Chloride ion adsorption agent for reinforced concrete structure and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191203 |
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