CN109111180A - Precast concrete three-protection design method - Google Patents
Precast concrete three-protection design method Download PDFInfo
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- CN109111180A CN109111180A CN201810983834.7A CN201810983834A CN109111180A CN 109111180 A CN109111180 A CN 109111180A CN 201810983834 A CN201810983834 A CN 201810983834A CN 109111180 A CN109111180 A CN 109111180A
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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
- C04B28/08—Slag cements
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of precast concrete three-protection design methods, belong to concrete process field, its key points of the technical solution are that including dedusting, recycling, separation, recycling, prefabricated, steam-cured and molding.The present invention solves the technical problem that concrete three-protection design method is at high cost under the prior art, has achieved the effect that can reduce concrete three-protection design cost, is applied in concrete three-protection design.
Description
Technical field
The present invention relates to concrete process fields, more specifically, it is related to a kind of precast concrete three-protection design method.
Background technique
In recent years, social development is rapid, and the rate of expansion in city is also getting faster, also like a raging fire carry out of removing.
In building trade, precast concrete, which is called, does commerical ready-mixed concrete, is indispensable one of the important source material of traditional architecture industry.
Commerical ready-mixed concrete is to sell and use transport vehicle after metering, mixing in mixing plant, is transported at the appointed time
The concrete mix of place to use.Commerical ready-mixed concrete is in stirring, transport, use process, blender, mixer truck and pumping line
Commerical ready-mixed concrete in road cannot obtain 100% utilization, inevitably remain commodity on mixing drum and inner wall of the pipe
Concrete can also generate a large amount of dust in the process of manufacture of commerical ready-mixed concrete, and concrete mixing plant is in blender and stirs
In the cleaning process for mixing the production equipments such as vehicle, and waste residue and waste water can be generated.These discarded commerical ready-mixed concretes, dust, waste residue with
And if waste water direct emission can pollute surrounding enviroment, and simple consideration reduces these building wastes of the processing of pollution
Increasing for production cost is resulted in, therefore develop a kind of lower-cost concrete three-protection design method to become the task of top priority.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of precast concrete three-protection design side
Method is realized and was produced and processed to precast concrete by dedusting, recycling, separation, recycling, prefabricated, steam-cured and molding
The recycling of the three wastes generated in journey not only reduces the pollution to environment, and reduces the waste of water resource, additionally it is possible to
Additional product is generated using these building wastes, can reduce production and processing cost, and additional extra earning.
To achieve the above object, the present invention provides the following technical scheme that a kind of precast concrete three-protection design method, packet
Include following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and 3 ~ 5min of uniform stirring are added in towards collecting tank, make to receive in step S2
The waste water generated in the water and precast concrete production process of collection staticly settles in collecting tank, makes collecting tank by water decanter
Interior upper clear supernate flow to recovery pond, and remaining waste residue is pulled out, concentrates and receives with the useless concrete generated in precast concrete production process
Collection；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 2 ~ 6mm, and take 100 ~ 110 parts of useless concrete particles and 10 ~ 15 parts of natural sands, 20 ~ 25 parts of blast furnace slags,
15 ~ 25 parts of flyash, 10 ~ 15 parts of washed-out sands, 20 ~ 25 parts of air entraining agents and 3 ~ 5 parts of additives are uniformly mixed, and form premix；
S5；It is prefabricated；Premix in step S4 is piled up in mold, during piling up, the premix in mold often increases one
Centimetre, the pure water of the premix weight 10% ~ 15% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4 ~ 5 hours are stood, obtains preformed bricks first sample；
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 ~ 11 hours of 110 DEG C ~ 120 DEG C；
S7 makes the preformed bricks first sample natural cooling in S6, and demoulding obtains preformed bricks.
By using above-mentioned technical proposal, the water energy in step s1 enough makes the dust generated in precast concrete production process
Sedimentation, and flow into collecting tank and settle together with water, the water energy after sedimentation is enough in the cleaning or other positions of concrete placement vehicle, and
The dust to precipitate can be mixed with the waste residue generated in precast concrete production process, and dry is in partial size for 2 ~ 6mm's
Graininess can turn waste into wealth by recycling, after prefabricated, steam-cured and molding, make have pollution to environment originally, need
It spends the building waste of great amount of cost cleaning to become to create the product of profit, reduces the processing cost of the concrete three wastes.
Preferable: air entraining agent described in the step S4 is the carbonization piemarker fiber of adsorption saturation LAS solution.
By using above-mentioned technical proposal, LAS material and piemarker fiber are cheap, and the piemarker fiber after carbonization can
The effect for further enhancing concrete strength that can not be provided with normal alkyl benzenesulfonates air entraining agent is provided.
Preferable: the carbonization piemarker fiber is made by following methods:
(1) piemarker fiber is completely immersed in 3 ~ 5min of immersion in water；
(2) drying is taken out；
(3) it is impregnated 4 ~ 5 hours in 40 ~ 45 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out under oxygen-free environment
500 ~ 600 DEG C charing process 3 ~ 4 hours, be added in 0.5~0.8mol/L sodium bicarbonate solution and impregnate 1~2 hour after charing,
It finally washes with water, dry obtained charing piemarker fiber.
By using above-mentioned technical proposal, the carbon fiber formed after charing has more ducts, can have preferably
Absorption property, can be in the more LAS of subsequent adsorbtion, additionally it is possible to provide the piemarker fiber concrete for impregnating LAS solution
And outer enhanced strength, provide the unexistent additional effect of conventional air entraining agent.
Preferable: in the step S4, additive uses naphthalene series high-efficiency water-reducing agent.
By using above-mentioned technical proposal, naphthalene series high-efficiency water-reducing agent has very strong peptizaiton for cement particle, can be complete
Improve and improve the various performances of concrete in face.
Preferable: in the step S4, Si oxide content is not less than 55wt% in flyash, and aluminium oxide content is not small
In 28wt%, ferriferous oxide content is not more than 8wt%.
By using above-mentioned technical proposal, the intensity of preformed bricks can be enhanced, improve the quality of preformed bricks, reduce preformed bricks
Shrinking percentage.
Preferable: in the step S4, the content of calcium oxide is 25~30wt%, the content of aluminum oxide in blast furnace slag
Not less than 8wt%, the content of Si oxide is not less than 18wt%.
By using above-mentioned technical proposal, the intensity of preformed bricks can be improved, improve the quality of preformed bricks, and can be improved
The heat resistance of preformed bricks reduces the thermal conductivity of preformed bricks.
It is preferable: in the step S5, pile up be shaped to not apply external pressure pile up molding naturally.
By using above-mentioned technical proposal, can be reduced under the premise of the intensity of preformed bricks and hardness are guaranteed prefabricated
The weight of brick.
Preferable: in the step S6, steam pressure is 1.0~1.1atm.
By using above-mentioned technical proposal, the steaming of preformed bricks can be made under the premise of not influencing preformed bricks intensity and performance
Time reduction is supported, and the possibility of preformed bricks surface peeling can be reduced.
In conclusion the present invention has the advantages that compared with the prior art
1. the construction waste cleared up will be needed to close originally by dedusting, recycling, separation, recycling, prefabricated, steam-cured and molding
Reason development and utilization, are converted into the product that can be produced a profit, reduce the pollution to environment, and reduce the precast concrete three wastes
Processing cost；
2. the carbonization piemarker fiber by using adsorption saturation ammonium bicarbonate soln protects preformed bricks under the premise of reducing weight
Higher intensity has been held, and has imparted its preferable sound-insulating and heat-insulating effect.
Specific embodiment
A kind of embodiment one: precast concrete three-protection design method, comprising the following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and uniform stirring 3min are added in towards collecting tank, make to collect in step S2
Water and precast concrete production process in the waste water that generates staticly settled in collecting tank, made in collecting tank by water decanter
Upper clear supernate flow to recovery pond, remaining waste residue is pulled out, with the useless concrete centralized collection generated in precast concrete production process；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 2mm, and take 100 grams of useless concrete particles and 10 grams of natural sands, 20 grams of blast furnace slags, 15 grams of flyash,
10 grams of washed-out sands, 20 grams of air entraining agents and 3 grams of additives are uniformly mixed, and form premix；Additive uses naphthalene series high-efficiency diminishing
Agent；Si oxide content is 55wt% in flyash, and aluminium oxide content 28wt%, ferriferous oxide content is 8wt%；Blast furnace slag
The content of middle calcium oxide is 30wt%, and the content of aluminum oxide is 8wt%, and the content of Si oxide is 18wt%；Wherein air entraining agent
For the carbonization piemarker fiber of adsorption saturation LAS solution, the piemarker fiber that is carbonized is made by following methods:
(1) piemarker fiber is completely immersed in water and impregnates 3min；
(2) drying is taken out；
(3) it is impregnated 4 hours in 40 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out 500 DEG C under oxygen-free environment
It charing process 3 hours, is added in 0.5mol/L sodium bicarbonate solution and impregnates 1 hour after charing, finally wash with water, the system of drying
Piemarker fiber must be carbonized.
S5；It is prefabricated；Premix in step S4 is piled up in mold, the every increasing of premix during piling up, in mold
It is one centimetre high, the pure water of the premix weight 10% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4 hours are stood, obtains preformed bricks first sample；Pile up be shaped to not apply external pressure pile up molding naturally.
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 hours of 110 DEG C DEG C；Steam pressure
For 1.0atm.
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
A kind of embodiment two: precast concrete three-protection design method, comprising the following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and uniform stirring 4min are added in towards collecting tank, make to collect in step S2
Water and precast concrete production process in the waste water that generates staticly settled in collecting tank, made in collecting tank by water decanter
Upper clear supernate flow to recovery pond, remaining waste residue is pulled out, with the useless concrete centralized collection generated in precast concrete production process；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 2mm, and take 105 grams of useless concrete particles and 12 grams of natural sands, 23 grams of blast furnace slags, 18 grams of flyash,
14 grams of washed-out sands, 24 grams of air entraining agents and 4 grams of additives are uniformly mixed, and form premix；Additive uses naphthalene series high-efficiency diminishing
Agent；Si oxide content is 60wt% in flyash, and aluminium oxide content 29wt%, ferriferous oxide content is 6wt%；Blast furnace slag
The content of middle calcium oxide is 27wt%, and the content of aluminum oxide is 10wt%, and the content of Si oxide is 20wt%；Wherein bleed
Agent is the carbonization piemarker fiber of adsorption saturation LAS solution, and carbonization piemarker fiber is made by following methods:
(1) piemarker fiber is completely immersed in water and impregnates 4min；
(2) drying is taken out；
(3) it is impregnated 4.5 hours in 42 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out 500 under oxygen-free environment
~ 600 DEG C charing process 3.5 hours, be added in 0.65mol/L sodium bicarbonate solution and impregnate 1.5 hours after charing, finally use water
Charing piemarker fiber is made in cleaning, drying.
S5；It is prefabricated；Premix in step S4 is piled up in mold, the every increasing of premix during piling up, in mold
It is one centimetre high, the pure water of the premix weight 14% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4.5 hours are stood, obtains preformed bricks first sample；Pile up be shaped to not apply external pressure pile up molding naturally.
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 hours of 115 DEG C；Steam pressure is
1.0atm。
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
A kind of embodiment three: precast concrete three-protection design method, comprising the following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and uniform stirring 5min are added in towards collecting tank, make to collect in step S2
Water and precast concrete production process in the waste water that generates staticly settled in collecting tank, made in collecting tank by water decanter
Upper clear supernate flow to recovery pond, remaining waste residue is pulled out, with the useless concrete centralized collection generated in precast concrete production process；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 3mm, and take 110 grams of useless concrete particles and 15 grams of natural sands, 25 grams of blast furnace slags, 25 grams of flyash,
15 grams of washed-out sands, 25 grams of air entraining agents and 5 grams of additives are uniformly mixed, and form premix；Additive uses naphthalene series high-efficiency diminishing
Agent；Si oxide content is 55wt% in flyash, and aluminium oxide content 28wt%, ferriferous oxide content is no more than 8wt%；It is high
The content of calcium in furnace oxide is 30wt%, and the content of aluminum oxide is 8wt%, and the content of Si oxide is 18wt%；Wherein draw
Gas agent is the carbonization piemarker fiber of adsorption saturation LAS solution, and carbonization piemarker fiber is made by following methods:
(1) piemarker fiber is completely immersed in water and impregnates 5min；
(2) drying is taken out；
(3) it is impregnated 5 hours in 45 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out 600 DEG C under oxygen-free environment
It charing process 4 hours, is added in 0.8mol/L sodium bicarbonate solution and impregnates 2 hours after charing, finally wash with water, the system of drying
Piemarker fiber must be carbonized.
S5；It is prefabricated；Premix in step S4 is piled up in mold, the every increasing of premix during piling up, in mold
It is one centimetre high, the pure water of the premix weight 15% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 5 hours are stood, obtains preformed bricks first sample；Pile up be shaped to not apply external pressure pile up molding naturally.
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 11 hours of 120 DEG C；Steam pressure is
1.1atm。
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
A kind of example IV: precast concrete three-protection design method, comprising the following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and uniform stirring 4min are added in towards collecting tank, make to collect in step S2
Water and precast concrete production process in the waste water that generates staticly settled in collecting tank, made in collecting tank by water decanter
Upper clear supernate flow to recovery pond, remaining waste residue is pulled out, with the useless concrete centralized collection generated in precast concrete production process；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 4mm, and take 105 grams of useless concrete particles and 12 grams of natural sands, 23 grams of blast furnace slags, 18 grams of flyash,
14 grams of washed-out sands, 24 grams of air entraining agents and 4 grams of additives are uniformly mixed, and form premix；Additive uses naphthalene series high-efficiency diminishing
Agent；Si oxide content is 55wt% in flyash, and aluminium oxide content 28wt%, ferriferous oxide content is 8wt%；Blast furnace slag
The content of middle calcium oxide is 27wt%, and the content of aluminum oxide is 8wt%, and the content of Si oxide is 18wt%；Wherein air entraining agent
For the carbonization piemarker fiber of adsorption saturation LAS solution, the piemarker fiber that is carbonized is made by following methods:
(1) piemarker fiber is completely immersed in water and impregnates 4min；
(2) drying is taken out；
(3) it is impregnated 4.5 hours in 42 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out 500 under oxygen-free environment
~ 600 DEG C charing process 3.5 hours, be added in 0.65mol/L sodium bicarbonate solution and impregnate 1.5 hours after charing, finally use water
Charing piemarker fiber is made in cleaning, drying.
S5；It is prefabricated；Premix in step S4 is piled up in mold, the every increasing of premix during piling up, in mold
It is one centimetre high, the pure water of the premix weight 14% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4.5 hours are stood, obtains preformed bricks first sample；Pile up be shaped to not apply external pressure pile up molding naturally.
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 hours of 115 DEG C；Steam pressure is
1.0atm。
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
A kind of embodiment five: precast concrete three-protection design method, comprising the following steps:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and uniform stirring 4min are added in towards collecting tank, make to collect in step S2
Water and precast concrete production process in the waste water that generates staticly settled in collecting tank, made in collecting tank by water decanter
Upper clear supernate flow to recovery pond, remaining waste residue is pulled out, with the useless concrete centralized collection generated in precast concrete production process；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 5mm, and take 105 grams of useless concrete particles and 12 grams of natural sands, 23 grams of blast furnace slags, 18 grams of flyash,
14 grams of washed-out sands, 24 grams of air entraining agents and 4 grams of additives are uniformly mixed, and form premix；Additive uses naphthalene series high-efficiency diminishing
Agent；Si oxide content is 55wt% in flyash, and aluminium oxide content 28wt%, ferriferous oxide content is 8wt%；Blast furnace slag
The content of middle calcium oxide is 27wt%, and the content of aluminum oxide is 8wt%, and the content of Si oxide is 18wt%；Wherein air entraining agent
For the carbonization piemarker fiber of adsorption saturation LAS solution, the piemarker fiber that is carbonized is made by following methods:
(1) piemarker fiber is completely immersed in water and impregnates 4min；
(2) drying is taken out；
(3) it is impregnated 4.5 hours in 42 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out 500 under oxygen-free environment
~ 600 DEG C charing process 3.5 hours, be added in 0.65mol/L sodium bicarbonate solution and impregnate 1.5 hours after charing, finally use water
Charing piemarker fiber is made in cleaning, drying.
S5；It is prefabricated；Premix in step S4 is piled up in mold, the every increasing of premix during piling up, in mold
It is one centimetre high, the pure water of the premix weight 14% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4.5 hours are stood, obtains preformed bricks first sample；Pile up be shaped to not apply external pressure pile up molding naturally.
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 hours of 115 DEG C；Steam pressure is
1.0atm。
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
Follow-up investigation is carried out to the precast concrete three-protection design method of certain project management department.Project management department's precast concrete yield
It is 120 ton/days, 3000 milligram/cubic metre of dust weight in unit volume air works normally average waste water 8 in next week
Ton/day, average 2 ton/days of waste residue in next week is worked normally, average daily processing precast concrete three wastes institute cost gold is 3280
Yuan.After a kind of precast concrete three-protection design method disclosed in embodiment three, average daily processing concrete
Native three wastes institute cost gold is 1719 yuans, and is able to produce 3 tons of heavy preformed bricks daily.
Performance parameter detecting is carried out to the light-weight brick as made from method in embodiment one~five, each performance parameter is as follows:
Refractoriness: it is not less than 750 degree；
Thermal coefficient: 0.10~0.12W/ (m K)；
Shrinking percentage: it is not more than 0.30mm/m；
Bulk density: it is not more than 670kg/m3.Meet level-one refractory material standard.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of precast concrete three-protection design method, it is characterised in that: the following steps are included:
S1, dedusting；Towards soot region shower water, make water uniformly in conjunction with the dust in air, and falls on the ground；
S2, recycling, the water centralized collection that step S1 is declined on the ground, and together with generation during production precast concrete
Waste water is together in centralized collection to collecting tank；
S3, separation；Potassium aluminum sulfate dodecahydrate crystal, and 3 ~ 5min of uniform stirring are added in towards collecting tank, make to receive in step S2
The waste water generated in the water and precast concrete production process of collection staticly settles in collecting tank, makes collecting tank by water decanter
Interior upper clear supernate flow to recovery pond, and remaining waste residue is pulled out, concentrates and receives with the useless concrete generated in precast concrete production process
Collection；
S4 is recycled；Water in step S3 in recovery pond is led near tank car and is used to clean, the useless concrete collected in S3 is dry
Be crushed to partial size afterwards and be the particle of 2 ~ 6mm, and take 100 ~ 110 parts of useless concrete particles and 10 ~ 15 parts of natural sands, 20 ~ 25 parts of blast furnace slags,
15 ~ 25 parts of flyash, 10 ~ 15 parts of washed-out sands, 20 ~ 25 parts of air entraining agents and 3 ~ 5 parts of additives are uniformly mixed, and form premix；
S5, it is prefabricated；Premix in step S4 is piled up in mold, during piling up, the premix in mold often increases one
Centimetre, the pure water of the premix weight 10% ~ 15% of a cm thick is uniformly sprayed into mold, is piled up to the premix in mold
After the completion, 4 ~ 5 hours are stood, obtains preformed bricks first sample；
S6, it is steam-cured；Preformed bricks first sample in step S5 is used vapor steam-cured 10 ~ 11 hours of 110 DEG C ~ 120 DEG C；
S7, molding；Make the preformed bricks first sample natural cooling in S6, demoulds, obtain preformed bricks.
2. precast concrete three-protection design method according to claim 1, it is characterised in that: described in the step S4
Air entraining agent is the carbonization piemarker fiber of adsorption saturation LAS solution.
3. precast concrete three-protection design method according to claim 2, it is characterised in that: the carbonization piemarker fiber by
Following methods are made:
(1) piemarker fiber is completely immersed in 3 ~ 5min of immersion in water；
(2) drying is taken out；
(3) it is impregnated 4 ~ 5 hours in 40 ~ 45 DEG C of saturation potassium nitrate solution, then takes out crushing, and carry out under oxygen-free environment
500 ~ 600 DEG C charing process 3 ~ 4 hours, be added in 0.5~0.8mol/L sodium bicarbonate solution and impregnate 1~2 hour after charing,
It finally washes with water, dry obtained charing piemarker fiber.
4. precast concrete three-protection design method according to claim 1, it is characterised in that: additional in the step S4
Agent uses naphthalene series high-efficiency water-reducing agent.
5. precast concrete three-protection design method according to claim 1, it is characterised in that: in the step S4, fine coal
Si oxide content is not less than 55wt% in ash, and aluminium oxide content is not less than 28wt%, and ferriferous oxide content is not more than 8wt%.
6. precast concrete three-protection design method according to claim 1, it is characterised in that: in the step S4, blast furnace
The content of calcium oxide is 25~30wt% in slag, and the content of aluminum oxide is not less than 8wt%, and the content of Si oxide is not less than
18wt%。
7. precast concrete three-protection design method according to claim 1, it is characterised in that: in the step S5, pile up
Be shaped to not apply external pressure piles up molding naturally.
8. precast concrete three-protection design method according to claim 1, it is characterised in that: in the step S6, steam
Pressure is 1.0~1.1atm.
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