CN107721278A - A kind of preparation method of concrete prefabricated board - Google Patents
A kind of preparation method of concrete prefabricated board Download PDFInfo
- Publication number
- CN107721278A CN107721278A CN201711115811.6A CN201711115811A CN107721278A CN 107721278 A CN107721278 A CN 107721278A CN 201711115811 A CN201711115811 A CN 201711115811A CN 107721278 A CN107721278 A CN 107721278A
- Authority
- CN
- China
- Prior art keywords
- concrete
- prefabricated board
- preparation
- parts
- concrete prefabricated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention discloses a kind of preparation method of concrete prefabricated board of technical field of building construction, the preparation method of the concrete prefabricated board comprises the following steps：S1：Raw material mixes；S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould, it is using vibrating device that concrete vibrating is closely knit, it is then manually using trowel that the surface of concrete is floating, concrete surface is finally subjected to press polish；S3：Maintenance；S4：The demoulding：6 8h demouldings discharging after steam curing, a kind of preparation method for concrete prefabricated board that the invention proposes, substantially increase the tensile strength and bending strength of concrete prefabricated board, the globality and anti-seismic performance of structure can be effectively improved, the cracking of concrete prefabricated board can be prevented, the corrosion resistance and anti-permeability performance of concrete prefabricated board are improved, the invented technology is simple, and cost is cheap.
Description
Technical field
The present invention relates to technical field of building construction, specially a kind of preparation method of concrete prefabricated board.
Background technology
Prefabricated board is exactly the floor among early stage building.It is exactly the module or plate to be used of engineering.Because it is in work
Directly transport to job site after factory's machine-shaping to be installed, so being prefabricated board.It is first empty with planking nail system when making prefabricated board
Heart model, after reinforcing bar, fill hollow parts with cement in the hollow part distribution of model, wait it is dry after knock-off plank, it is remaining just
It is prefabricated board.Prefabricated board is many in architectural use, such as the cement plate covered on the ditch beside highway；Done on roof every
The cement plate of thermosphere is all prefabricated board.The shortcomings that existing concrete prefabricated board bending strength is relatively low and fragility is high, causes coagulation
It is native to be also easy to produce crack in use or even be broken, so as to have a strong impact on the general safety of building and service life, and preparation method
Complexity, cost is too high, therefore, a kind of it is proposed that preparation method of concrete prefabricated board.
The content of the invention
It is an object of the invention to provide a kind of preparation method of concrete prefabricated board, to solve to carry in above-mentioned background technology
The existing concrete prefabricated board bending strength that goes out is relatively low and the shortcomings that fragility is high, causes concrete to be also easy to produce crack in use
Even it is broken, so as to have a strong impact on the general safety of building and service life, and the problem of preparation method is complicated, and cost is too high.
To achieve the above object, the present invention provides following technical scheme：A kind of preparation method of concrete prefabricated board, this is mixed
The preparation method for coagulating native prefabricated board comprises the following steps：
S1：Raw material mixes：By cement 50-60 parts, fine sand 100-110 parts, stone 180-220 parts, flyash 4-10 parts, subtract
Aqua 8-10 parts, flexible hybrid fiber 14-16 parts, antifreezing agent 2-5 parts, corrosion inhibitor 1-3 parts, fire-proof packing 10-15 parts and water fall
Enter in mixer and be stirred, after stirring, obtain precast concrete；
S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould,
It is using vibrating device that concrete vibrating is closely knit, it is then manually using trowel that the surface of concrete is floating, finally by concrete
Surface carries out press polish；
S3：Maintenance：Secondary pressure is carried out before concrete final set to smear, and steam is then carried out to concrete using high-temperature steam method
Maintenance；
S4：The demoulding：6-8h demouldings discharging after steam curing.
Preferably, the dosage of the step S1 reclaimed waters is 0.5-0.6 times of solid mixture.
Preferably, the fineness modulus 1.55-1.60 of the fine sand, performance density 2.65-2.68, density 1.48-
1.58 gram/cc.
Preferably, the stone is limestone, and a diameter of 0.8-1.5 centimetres of limestone, performance density 2.6-
2.8, density is 1.4-1.5 grams/cc.
Preferably, the water reducer is poly-hydroxy acid salt based water reducer.
Preferably, the flexible hybrid fiber is that mesh polypropylene-fibre and vinal mix.
Preferably, the fire-proof packing is the mixture of crushed crude pearlite and magnesia.
Preferably, the stir speed (S.S.) in the step S1 is 30-45 revs/min, and mixing time is 8-12 minutes, stirring temperature
Spend for 10-15 minutes.
Preferably, the steam curing time in the step S3 is 60-80 degrees Celsius, and curing time is 12-16 hours.
Preferably, in the step S3, when not possessing steam curing condition, it is stripped in concrete setting, Ran Hou
Concrete surface covers layer of plastic film, is watered once in 2-4 hours on daytime, hour at night 4-6 waters once, curing time
For 7-10 days.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of preparation for concrete prefabricated board that the invention proposes
Method, the tensile strength and bending strength of concrete prefabricated board are substantially increased, the globality of structure can be effectively improved and resisted
Shock stability, the cracking of concrete prefabricated board can be prevented, improve the corrosion resistance and anti-permeability performance of concrete prefabricated board,
The invented technology is simple, and cost is cheap.
Brief description of the drawings
Fig. 1 is preparation method flow chart of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of preparation method of concrete prefabricated board：
Embodiment 1
The preparation method of concrete prefabricated board comprises the following steps：
S1：Raw material mixes：By 58 parts of cement, 100 parts of fine sand, 190 parts of stone, 8 parts of flyash, 9 parts of water reducer, mix it is soft
Property 16 parts of fiber, 3 parts of antifreezing agent, 3 parts of corrosion inhibitor, 10 parts of fire-proof packing and water are poured into mixer and are stirred, and are stirred
Afterwards, precast concrete is obtained, stir speed (S.S.) is 45 revs/min, and mixing time is 12 minutes, and whipping temp is 15 minutes, wherein,
The dosage of water is 0.6 times of solid mixture, the fineness modulus 1.60 of fine sand, and performance density is -2.68, density is 1.58 grams/
Cubic centimetre, stone is limestone, and a diameter of 1.5 centimetres of limestone, performance density 2.8, density are 1.5 grams/cube
Centimetre, water reducer is poly-hydroxy acid salt based water reducer, and flexible hybrid fiber is that mesh polypropylene-fibre and vinal mix
Form, fire-proof packing is the mixture of crushed crude pearlite and magnesia；
S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould,
It is using vibrating device that concrete vibrating is closely knit, it is then manually using trowel that the surface of concrete is floating, finally by concrete
Surface carries out press polish；
S3：Maintenance：Secondary pressure is carried out before concrete final set to smear, and steam is then carried out to concrete using high-temperature steam method
Maintenance, steam curing time are 80 degrees Celsius, and curing time is 16 hours, when not possessing steam curing condition, in concrete
It is stripped during solidification, then covers layer of plastic film in concrete surface, in watering on 4 hours daytimes once, the watering of 6 hours nights
Once, curing time is 10 days；
S4：The demoulding：8h demouldings discharging after steam curing.
Embodiment 2
The preparation method of concrete prefabricated board comprises the following steps：
S1：Raw material mixes：By 52 parts of cement, 102 parts of fine sand, 190 parts of stone, 5 parts of flyash, 10 parts of water reducer, mix
14 parts of flexible fiber, 5 parts of antifreezing agent, 3 parts of corrosion inhibitor, 10 parts of fire-proof packing and water are poured into mixer and are stirred, and stirring is equal
After even, precast concrete is obtained, stir speed (S.S.) is 30 revs/min, and mixing time is 8 minutes, and whipping temp is 10 minutes, its
In, the dosage of water is 0.5 times of solid mixture, the fineness modulus 1.55 of fine sand, performance density 2.65, density 1.48
Gram/cc, stone is limestone, and a diameter of 0.8 centimetre of limestone, performance density 2.6, density is 1.4 grams/it is vertical
Square centimetre, water reducer is poly-hydroxy acid salt based water reducer, and flexible hybrid fiber is that mesh polypropylene-fibre and vinal mix
Conjunction forms, and fire-proof packing is the mixture of crushed crude pearlite and magnesia；
S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould,
It is using vibrating device that concrete vibrating is closely knit, it is then manually using trowel that the surface of concrete is floating, finally by concrete
Surface carries out press polish；
S3：Maintenance：Secondary pressure is carried out before concrete final set to smear, and steam is then carried out to concrete using high-temperature steam method
Maintenance, steam curing time are 60 degrees Celsius, and curing time is 12 hours, when not possessing steam curing condition, in concrete
It is stripped during solidification, then covers layer of plastic film in concrete surface, in watering on 2 hours daytimes once, the watering of 4 hours nights
Once, curing time is 7 days；
S4：The demoulding：6-8h demouldings discharging after steam curing.
Embodiment 3
The preparation method of concrete prefabricated board comprises the following steps：
S1：Raw material mixes：By 55 parts of cement, 105 parts of fine sand, 200 parts of stone, 7 parts of flyash, 9 parts of water reducer, mix it is soft
Property 15 parts of fiber, 2 parts of antifreezing agent, 2 parts of corrosion inhibitor, 12 parts of fire-proof packing and water are poured into mixer and are stirred, and are stirred
Afterwards, precast concrete is obtained, stir speed (S.S.) is 37 revs/min, and mixing time is 10 minutes, and whipping temp is 13 minutes, wherein,
The dosage of water is 0.55 times of solid mixture, the fineness modulus 1.57 of fine sand, performance density 2.67, density is 1.53 grams/
Cubic centimetre, stone is limestone, and a diameter of 1.2 centimetres of limestone, performance density 2.7, density are 1.45 grams/cube
Centimetre, water reducer is poly-hydroxy acid salt based water reducer, and flexible hybrid fiber is that mesh polypropylene-fibre and vinal mix
Form, fire-proof packing is the mixture of crushed crude pearlite and magnesia；
S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould,
It is using vibrating device that concrete vibrating is closely knit, it is then manually using trowel that the surface of concrete is floating, finally by concrete
Surface carries out press polish；
S3：Maintenance：Secondary pressure is carried out before concrete final set to smear, and steam is then carried out to concrete using high-temperature steam method
Maintenance, steam curing time are 70 degrees Celsius, and curing time is 14 hours, when not possessing steam curing condition, in concrete
It is stripped during solidification, then covers layer of plastic film in concrete surface, in watering on 3 hours daytimes once, the watering of 5 hours nights
Once, curing time is 9 days；
S4：The demoulding：7h demouldings discharging after steam curing.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
- A kind of 1. preparation method of concrete prefabricated board, it is characterised in that：The preparation method of the concrete prefabricated board includes as follows Step：S1：Raw material mixes：By cement 50-60 parts, fine sand 100-110 parts, stone 180-220 parts, flyash 4-10 parts, water reducer 8-10 parts, flexible hybrid fiber 14-16 parts, antifreezing agent 2-5 parts, corrosion inhibitor 1-3 parts, fire-proof packing 10-15 parts and water are poured into and stirred Mix in machine and be stirred, after stirring, obtain precast concrete；S2：Pour mould：Releasing agent is coated on the surface of mould, then pours into the concrete in step S1 in mould, is used Vibrating device is closely knit by concrete vibrating, then manually using trowel that the surface of concrete is floating, finally by concrete surface Carry out press polish；S3：Maintenance：Carry out secondary pressure before concrete final set to smear, then carrying out steam to concrete using high-temperature steam method supports Shield；S4：The demoulding：6-8h demouldings discharging after steam curing.
- A kind of 2. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：The step S1 reclaimed waters Dosage be 0.5-0.6 times of solid mixture.
- A kind of 3. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：The fineness of the fine sand Modulus 1.55-1.60, performance density 2.65-2.68, density are 1.48-1.58 grams/cc.
- A kind of 4. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：The stone is lime Rock, and a diameter of 0.8-1.5 centimetres of limestone, performance density 2.6-2.8, density are 1.4-1.5 grams/cc.
- A kind of 5. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：The water reducer is poly- Hydroxy acid salt based water reducer.
- A kind of 6. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：It is described to mix flexible fibre Tie up and mixed for mesh polypropylene-fibre and vinal.
- A kind of 7. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：The fire-proof packing is The mixture of crushed crude pearlite and magnesia.
- A kind of 8. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：In the step S1 Stir speed (S.S.) is 30-45 revs/min, and mixing time is 8-12 minutes, and whipping temp is 10-15 minutes.
- A kind of 9. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：In the step S3 The steam curing time is 60-80 degrees Celsius, and curing time is 12-16 hours.
- A kind of 10. preparation method of concrete prefabricated board according to claim 1, it is characterised in that：In the step S3, When not possessing steam curing condition, it is stripped in concrete setting, then covers layer of plastic film in concrete surface, 2-4 hours on daytime water once, and hour at night 4-6 waters once, and curing time is 7-10 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115811.6A CN107721278A (en) | 2017-11-13 | 2017-11-13 | A kind of preparation method of concrete prefabricated board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711115811.6A CN107721278A (en) | 2017-11-13 | 2017-11-13 | A kind of preparation method of concrete prefabricated board |
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| Publication Number | Publication Date |
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| CN107721278A true CN107721278A (en) | 2018-02-23 |
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| CN201711115811.6A Pending CN107721278A (en) | 2017-11-13 | 2017-11-13 | A kind of preparation method of concrete prefabricated board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025968A (en) * | 2020-09-16 | 2020-12-04 | 郭冰晨 | Processing method of high-compactness concrete precast slab capable of preventing surface cracking |
| CN113072392A (en) * | 2021-03-30 | 2021-07-06 | 南通铁建建设构件有限公司 | Remote intelligent high-strength anti-seepage shield segment maintenance method |
| CN113279500A (en) * | 2021-05-31 | 2021-08-20 | 安徽华城兴建材科技有限公司 | Prevent splitting open dismantlement formula fiber cement board interior wall |
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| JP2001270763A (en) * | 2000-03-29 | 2001-10-02 | Taiheiyo Cement Corp | Pressure-receiving plate |
| CN106336158A (en) * | 2016-08-02 | 2017-01-18 | 深圳海龙建筑科技有限公司 | Geopolymer concrete prefabricated part and production method thereof |
| CN107056159A (en) * | 2017-05-04 | 2017-08-18 | 沈阳城市建设学院 | A kind of high tenacity concrete and its compound method with high workability |
-
2017
- 2017-11-13 CN CN201711115811.6A patent/CN107721278A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001270763A (en) * | 2000-03-29 | 2001-10-02 | Taiheiyo Cement Corp | Pressure-receiving plate |
| CN106336158A (en) * | 2016-08-02 | 2017-01-18 | 深圳海龙建筑科技有限公司 | Geopolymer concrete prefabricated part and production method thereof |
| CN107056159A (en) * | 2017-05-04 | 2017-08-18 | 沈阳城市建设学院 | A kind of high tenacity concrete and its compound method with high workability |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025968A (en) * | 2020-09-16 | 2020-12-04 | 郭冰晨 | Processing method of high-compactness concrete precast slab capable of preventing surface cracking |
| CN113072392A (en) * | 2021-03-30 | 2021-07-06 | 南通铁建建设构件有限公司 | Remote intelligent high-strength anti-seepage shield segment maintenance method |
| CN113279500A (en) * | 2021-05-31 | 2021-08-20 | 安徽华城兴建材科技有限公司 | Prevent splitting open dismantlement formula fiber cement board interior wall |
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Application publication date: 20180223 |