CN108484050A - A kind of combination of inner and outside collaboration limitation armored concrete becomes rusty swollen method - Google Patents
A kind of combination of inner and outside collaboration limitation armored concrete becomes rusty swollen method Download PDFInfo
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- CN108484050A CN108484050A CN201810468187.6A CN201810468187A CN108484050A CN 108484050 A CN108484050 A CN 108484050A CN 201810468187 A CN201810468187 A CN 201810468187A CN 108484050 A CN108484050 A CN 108484050A
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- Prior art keywords
- concrete
- waste gas
- industrial waste
- limitation
- armored concrete
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B40/02—Selection of the hardening environment
- C04B40/0231—Carbon dioxide hardening
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of combinations of inner and outside, and limitation armored concrete to be cooperateed with to become rusty swollen method, processing first is dusted to industrial waste gas, then industrial waste gas is mixed with air and controls its required temperature, make industrial waste gas and the concrete mix progress carburizing reagent of dispensing is completed, then enter prefabricated component molding and hardening maintenance stage in concrete mix, the industrial waste gas injection concrete carbon sequestration room after dedusting is subjected to carburizing reagent with precast concrete again, industrial waste gas is set persistently to carry out carburizing reagent with precast concrete in this way, it completes repeatedly to smear cement based penetration crystallization type water proofing paint on reinforced concrete precast member surface after prefabricated component conserves；Reinforced concrete precast member is made after the completion.The present invention can be improved concrete density, limit and corrode in external application water-repellent paint using carburizing reagent in the internal hole for reducing armored concrete, to the swollen speed of rust of the limitation armored concrete of the combination of inner and outside.
Description
Technical field
It becomes rusty swollen method the present invention relates to a kind of control armored concrete, specifically a kind of combination of inner and outside collaboration limitation reinforcing bar
Concrete becomes rusty swollen method.
Background technology
China is in the traffic engineering such as railway, highway, the viaduct in city, overpass, subway tunnel and water conservancy harbour
Sluice, power station, dock and the harbour built with armored concrete have spread all over the place.At present in China, armored concrete is
Using a kind of most structure type, the overwhelming majority of construction material sum is accounted for, while being also to use armored concrete in the world
The most area of structure.Annual 5 billion cubic meter of build concrete in China, 17,000,000 tons of reinforcing bar of consumption or more, heavy construction is equal
Using reinforced concrete frame structure.It is harmful by the external world for a long time due to the concrete structure being served in severe erosion environment
The erosion of medium, concrete cover gradually weaken the protective effect of reinforcing bar, and etching medium (such as chlorion) is in rebar surface
Constantly accumulation destroys the passivating film of rebar surface, causes steel bar corrosion.Steel bar corrosion bulk product can generally reach corresponding reinforcing bar
2~4 times of volume, steel bar corrosion product can generate radial compression to reinforcing bar surrounding concrete, and surrounding concrete then limits it
It expands, and then generates pressure on reinforcing bar/concrete interface, is i.e. rebar corrosion power.As steel bar corrosion aggravates, rebar corrosion
Power constantly increases, and concrete cover circumferential direction tensile stress is caused to sharply increase, when concrete cover exceeds its ultimate bearing energy
Power will appear crack, i.e. corrosive crack.After corrosive crack generates, it can increase with extent of steel corrosion, constantly expand from inside to outside
Exhibition finally runs through entire concrete cover.Corrosive crack is penetrated through once being formed, and extraneous hazardous medium can be directly to up to bar list
Face, substantially speeds up steel bar corrosion, and total performance is finally caused quickly to reduce, serious curtailment structure service life.Therefore such as
What limitation armored concrete become rusty it is swollen to extend armored concrete service life have great importance.
Invention content
In view of the above existing problems in the prior art, the present invention provides a kind of combinations of inner and outside to cooperate with limitation armored concrete rust
Swollen method can be improved concrete density, invaded in outer limit using carburizing reagent in the internal hole for reducing concrete
Erosion, to the swollen speed of rust of the limitation armored concrete of the combination of inner and outside.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of combination of inner and outside collaboration limitation reinforced concrete
The method that soil rust is swollen, the specific steps are：
A, industrial waste gas is first passed through into dust filter unit and is dusted processing；
B, the industrial waste gas of dedusting is mixed with normal temperature air, make mixed industrial waste gas temperature be 30 DEG C~
40℃；
C, according to the performance parameter reached needed for reinforced concrete precast member, coarse aggregate, fine aggregate, water used by determining
The proportioning of mud and water, then coarse aggregate, fine aggregate, cement and water carries out in mixing vessel being mixed form concrete and mix
Close object, the mixings time is 10~15min, in mixed process into mixing vessel lasting injection step B treated work
Industry exhaust gas stops after being mixed, and makes concrete mix that carbonization occur instead with the carbon dioxide in industrial waste gas
It answers；
D, concrete mix and reinforcing bar are placed in prefabricated-member mould, and ensure the matter of vibrating needed for armored concrete
Prefabricated-member mould, is then put into closed concrete carbon sequestration room, into concrete carbon sequestration room, treated by injection step B by amount
Industrial waste gas, while making the indoor humidity of concrete carbon sequestration be 35%~65% by humidifier, make concrete mix and work
Carbon dioxide in industry exhaust gas continues that carburizing reagent occurs, and stops the injection of industrial waste gas after continuing under this state 10~12 days,
Concrete continues maintenance 18~20 days in prefabricated-member mould；
E, reinforced concrete precast member is taken out from prefabricated-member mould after reaching curing time, in reinforced concrete precast member
Surface smear cement based penetration crystallization type water proofing paint, touch for the first time it is dry after, carry out second and smear, and so on, smear
Number is 5~8 times；
F, it after the waterproof material on reinforced concrete precast member surface touches do completely, completes swollen to armored concrete limitation rust
Processing.
Further, concrete carbon sequestration room is transparent rubber tank body, and volume is 3~5 times of prefabricated-member mould volume.
Further, the reinforcing bar of the precast concrete for antirust reinforcing bar or has carried out antirust pretreatment regular reinforcement.
Further, the cement is Portland cement.
Compared with prior art, the present invention uses the side that industrial waste gas is added to reinforced concrete precast member preparation process
Formula is first dusted processing to industrial waste gas, and avoiding the dust that it is rich in influences the quality of reinforced concrete precast member, then
Industrial waste gas is mixed with air, controlled at 30 DEG C~40 DEG C, the waste heat of industrial waste gas, Ji Nengjia can be made full use of in this way
Fast absorption of the armored concrete to the carbon dioxide gas in industrial waste gas, and can be carbonized in preparation process due to concrete instead
The intensity of reinforced concrete precast member should be improved.In inside, it is passed through industrial waste gas in precast concrete molding and hardening process,
Carbon dioxide in industrial waste gas can be fixed, reduce the discharge of greenhouse gases, while the calcium carbonate that carbonization generates
The hole that concrete can be filled, reduces the porosity of concrete, and improves the compactness of armored concrete, and limitation as far as possible is outer
Boundary is corroded to migrate in concrete cover, and concrete carbon sequestration indoor humidity is controlled 35%~65%, contributes to coagulation
The maintenance of native prefabricated component and the carburizing reagent of high-speed；In addition in outside, using smearing cement based penetration crystallization type water proofing paint
Mode chlorion etc. that the external world is corroded obstruct.To realize the armored concrete of the comprehensive three-dimensional combination of inner and outside
It becomes rusty swollen control, effectively extends the service life of reinforced concrete structure.
Specific implementation mode
The invention will be further described below.
Embodiment：The present invention the specific steps are：
A, industrial waste gas is first passed through into dust filter unit and is dusted processing；
B, the industrial waste gas of dedusting is mixed with normal temperature air, make mixed industrial waste gas temperature be 30 DEG C~
40℃；
C, according to the performance parameter reached needed for reinforced concrete precast member, coarse aggregate, fine aggregate, water used by determining
The proportioning of mud and water, then coarse aggregate, fine aggregate, cement and water carries out in mixing vessel being mixed form concrete and mix
Close object, the mixings time is 10~15min, in mixed process into mixing vessel lasting injection step B treated work
Industry exhaust gas stops after being mixed, and makes concrete mix that carbonization occur instead with the carbon dioxide in industrial waste gas
It answers；
D, concrete mix and reinforcing bar are placed in prefabricated-member mould, and ensure the matter of vibrating needed for armored concrete
Prefabricated-member mould, is then put into closed concrete carbon sequestration room, into concrete carbon sequestration room, treated by injection step B by amount
Industrial waste gas, while making the indoor humidity of concrete carbon sequestration be 35%~65% by humidifier, make concrete mix and work
Carbon dioxide in industry exhaust gas continues that carburizing reagent occurs, and stops the injection of industrial waste gas after continuing under this state 10~12 days,
Concrete continues maintenance 18~20 days in prefabricated-member mould；
E, reinforced concrete precast member is taken out from prefabricated-member mould after reaching curing time, in reinforced concrete precast member
Surface smear cement based penetration crystallization type water proofing paint, touch for the first time it is dry after, carry out second and smear, and so on, smear
Number is 5~8 times；
F, it after the waterproof material on reinforced concrete precast member surface touches do completely, completes swollen to armored concrete limitation rust
Processing.
Further, concrete carbon sequestration room is transparent rubber tank body, and volume is 3~5 times of prefabricated-member mould volume；
Using transparent rubber tank body convenient for the maintenance situation of observation precast concrete, and volume uses the 3 of prefabricated-member mould volume
~5 times, it is ensured that there is enough spaces with precast concrete be carbonized instead for industrial waste gas in concrete carbon sequestration room
It answers.
Further, the reinforcing bar of the precast concrete may be used antirust reinforcing bar or carry out antirust pretreatment ordinary steel
Muscle can also use regular reinforcement, it is preferred to use the reinforcing bar with antirust, this antirust function are act as even if there is the external world to invade
The chlorion etc. of erosion migrates to rebar surface, also can effectively slow down the corrosion of reinforcing bar, to limit rebar corrosion speed.
Further, Portland cement or other kind cement may be used in the cement, it is preferred to use common silicic acid
Salt cement, not only performance is stablized, but also its carbonation rate is faster, and carbonization effect is more preferable.
Claims (4)
- The swollen method 1. a kind of combination of inner and outside collaboration limitation armored concrete becomes rusty, which is characterized in that its specific steps are：A, industrial waste gas is first passed through into dust filter unit and is dusted processing；B, the industrial waste gas of dedusting is mixed with normal temperature air, it is 30 DEG C~40 to make mixed industrial waste gas temperature ℃；C, according to the performance parameter reached needed for reinforced concrete precast member, coarse aggregate, fine aggregate, cement used by determining and Then coarse aggregate, fine aggregate, cement and water are carried out mixing in mixing vessel and form concrete mixing by the proportioning of water Object, mixing time are 10~15min, continue into mixing vessel injection step B in mixed process treated industry Exhaust gas stops after being mixed, and makes concrete mix that carburizing reagent occur with the carbon dioxide in industrial waste gas；D, concrete mix and reinforcing bar are placed in prefabricated-member mould, and ensure the quality of vibrating needed for armored concrete, Then prefabricated-member mould is put into closed concrete carbon sequestration room, injection step B treated the works into concrete carbon sequestration room Industry exhaust gas, while making the indoor humidity of concrete carbon sequestration be 35%~65% by humidifier, make concrete mix and industry Carbon dioxide in exhaust gas continues that carburizing reagent occurs, and stops the injection of industrial waste gas after continuing under this state 10~12 days, mixes Solidifying soil continues maintenance 18~20 days in prefabricated-member mould；E, reinforced concrete precast member is taken out from prefabricated-member mould after reaching curing time, in the table of reinforced concrete precast member Cement based penetration crystallization type water proofing paint is smeared in face, is touched for the first time after doing, and is carried out second and is smeared, so cycle, smears number It is 5~8 times；F, after the waterproof material on reinforced concrete precast member surface touches do completely, the place swollen to armored concrete limitation rust is completed Reason.
- The swollen method 2. a kind of combination of inner and outside collaboration limitation armored concrete according to claim 1 becomes rusty, which is characterized in that Concrete carbon sequestration room is transparent rubber tank body, and volume is 3~5 times of prefabricated-member mould volume.
- The swollen method 3. a kind of combination of inner and outside collaboration limitation armored concrete according to claim 1 becomes rusty, which is characterized in that The reinforcing bar of the precast concrete is antirust reinforcing bar or has carried out antirust pretreatment regular reinforcement.
- The swollen method 4. a kind of combination of inner and outside collaboration limitation armored concrete according to claim 1 becomes rusty, which is characterized in that The cement is Portland cement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810468187.6A CN108484050A (en) | 2018-05-16 | 2018-05-16 | A kind of combination of inner and outside collaboration limitation armored concrete becomes rusty swollen method |
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| CN201810468187.6A CN108484050A (en) | 2018-05-16 | 2018-05-16 | A kind of combination of inner and outside collaboration limitation armored concrete becomes rusty swollen method |
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| CN108484050A true CN108484050A (en) | 2018-09-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320290A (en) * | 2018-11-02 | 2019-02-12 | 山西大学 | A kind of processing method of concrete prefabricated product enhancing carbon sequestration |
| CN112979340A (en) * | 2021-02-23 | 2021-06-18 | 深圳大学 | Method for maintaining reinforced concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876484A (en) * | 2015-05-15 | 2015-09-02 | 史才军 | Low-shrinkage regenerated aggregate concrete product and preparation method thereof |
-
2018
- 2018-05-16 CN CN201810468187.6A patent/CN108484050A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876484A (en) * | 2015-05-15 | 2015-09-02 | 史才军 | Low-shrinkage regenerated aggregate concrete product and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 程兆俊等: "混凝土中钢筋腐蚀与防护研究进展", 《HOT WORKING TECHNOLOGY》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320290A (en) * | 2018-11-02 | 2019-02-12 | 山西大学 | A kind of processing method of concrete prefabricated product enhancing carbon sequestration |
| CN112979340A (en) * | 2021-02-23 | 2021-06-18 | 深圳大学 | Method for maintaining reinforced concrete |
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Application publication date: 20180904 |