CN106671247A - Manufacturing method for concrete bridge plate - Google Patents
Manufacturing method for concrete bridge plate Download PDFInfo
- Publication number
- CN106671247A CN106671247A CN201710079723.9A CN201710079723A CN106671247A CN 106671247 A CN106671247 A CN 106671247A CN 201710079723 A CN201710079723 A CN 201710079723A CN 106671247 A CN106671247 A CN 106671247A
- Authority
- CN
- China
- Prior art keywords
- concrete
- bridge plate
- temperature
- vibrating
- concrete bridge
- 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.)
- Pending
Links
Classifications
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/022—Feeding several successive layers, optionally of different materials
-
- 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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/006—Pressing by atmospheric pressure, as a result of vacuum generation or by gas or liquid pressure acting directly upon the material, e.g. jets of compressed air
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
Abstract
The invention discloses a manufacturing method for a concrete bridge plate. The manufacturing method is characterized by the following manufacturing steps of: (1) erecting a mould; (2) distributing materials, wherein wrinkle-shaped rubber cloth is laid on the bottom surface of concrete, and a saw tooth shape is formed on the top surface of concrete after the concrete is hardened; (3) pouring concrete; (4) performing vacuum pressurizing and infiltrating, wherein when strength of the concrete bridge plate reaches 30 MPa, the mould is dismounted for putting the concrete bridge plate into a chemical infiltrating tank to perform vacuum pressurizing and infiltrating, and a chemical raw material in the chemical infiltrating tank is diallyl terephthalate; (5) performing ray irradiation; and (6) performing concrete curing. The manufacturing method has the advantages of good mechanical properties, and reliable quality.
Description
Technical field
The present invention relates to a kind of concrete bridge plate, more particularly to a kind of preparation method of concrete bridge plate.
Background technology
Precast concrete bridge plate is conventional prefabricated components, and concrete strength does not often reach requirement, precast concrete bridge
Plate is finished in maintenance and occurs as soon as crack phenomenon.Because precast concrete bridge plate is important structural elements, it is related to engineering safety,
How to ensure its concrete strength or to improve concrete strength by technological measure most important, in addition in manufacturing process
Avoiding concrete bridge plate from checking occur can also improve concrete durability.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of preparation method of concrete bridge plate
To ensure concrete bridge plate quality.
Making step of the present invention includes：
(1) mould is installed
(2) cloth
Concrete point two-layer carries out cloth, is progressively carried out from one end to the other end, and ground floor fabric thickness is concrete
The 1/2~2/3 of native bridge plate, the second layer is filled, and need to be higher by 0~3mm of die end side form.Fold shape rubber is laid in concrete bottom
Adhesive plaster, top of concrete forms zigzag after concrete hardening, is conducive to precast concrete bridge plate to form whole with pave-load layer above
Body.This technical measures is primarily directed to precast concrete bridge plate goes out with pave-load layer under thump load in use
Now depart from.
(3) concreting
Concrete vibrating is shaken mode using side, and vibrator vibration frequency should be adjusted to 100~110Hz.Concrete vibration time root
Adjusted accordingly according to concrete slump and situation of vibrating, first time vibrating time is 100s~140s, and vibrating to surface has bright
Untill aobvious laitance；Second vibrating time is 60s~100s, vibrates to concrete surface no longer significantly to sink in level, no longer
There is air pocket, laitance is showed on surface.
After concrete vibrating completes 3min, concrete surface can be wiped one's face, and side fillet is filled out in attention.Concrete is smeared
After flat, bristle must be carried out to concrete surface.Bristle depth is 2~3mm, 5~8mm of spacing, and must not have laitance, tight before final set
Taboo is trampled.
After concrete vibrating completes 20~30min, the geotextiles moistened with water are added a cover in concrete surface, and it is anti-to sprinkle water
Only concrete moisture loss is too fast.
(4) vacuum pressed infiltration
Treat that concrete bridge plate intensity reaches 30MPa, concrete bridge plate is put into chemical saturation tank by dismounting mould carries out vacuum
Pressurization infiltration, the chemical raw material of chemical saturation tank is diallyl p phthalate.Nature infiltration leaching is found in process of the test
Profit rate is relatively low, in order to improve effect of impregnation, natural infiltration, pressurization infiltration, vacuum immersion and vacuum pressed infiltration is carried out
Contrast test.Pressurization infiltration and vacuum pressed infiltration pressurization value use 1.5MPa.Result of the test shows that nature infiltrates infiltration rate
Relatively low, vacuum pressed effect of impregnation is best.
The vacuum pressed of table 1 infiltrates
| Naturally infiltrate | Pressurization infiltration | Vacuum immersion | Vacuum pressed infiltrates | |
| Infiltration rate (%) | 2.36 | 3.15 | 3.41 | 3.68 |
| Infiltration rate (%) | 2.26 | 3.04 | 3.27 | 3.52 |
| Infiltration rate (%) | 2.21 | 2.95 | 3.19 | 3.44 |
| Infiltration rate (%) | 2.32 | 3.09 | 3.35 | 3.61 |
| Infiltration rate (%) | 2.18 | 2.97 | 3.15 | 3.40 |
| Infiltration rate (%) | 2.38 | 3.18 | 3.44 | 3.71 |
| Infiltration rate (%) | 2.33 | 3.12 | 3.36 | 3.62 |
| Infiltration rate (%) | 2.28 | 3.04 | 3.31 | 3.55 |
The relation of the x-ray radiation of table 2 and heat time and intensity
(5) radiation exposure
Concrete bridge plate is irradiated using X-ray, is heated while X-ray is irradiated, X-ray radiation
Amount time and heat time determine that table 2 is the relation of x-ray radiation and heat time and intensity according to experiment, are found in table
Concrete bridge plate compression strength and rupture strength have an optimum value to parameter, and according to result of the test, amount of radiation is defined as 1.6 ×
1010cd/m2, the heat time is 10h.
(6) concrete curing
Concrete curing is divided into steam curing, spray two stages of maintenance.
Steam curing uses small-sized maintenance canopy fencing lawn method, and steam curing has four-stage：Rest the stage, concrete
Pour to finish and first place a period of time to before heating up, primarily to enhancing concrete is supported to temperature rise period Structural Disintegration
Anti- ability.Quiet period workshop temperature of stopping preferably must be held in 5 DEG C~30 DEG C, quiet after the completion of perfusion to stop no less than 3h.Temperature rise period, mix
Solidifying soil original temperature rises to the constant temperature stage, to prevent concrete surface from producing crack because volumetric expansion is too fast, it is therefore necessary to
Control programming rate, per hour no more than 15 DEG C of constant temperature stages, due to concrete strength fastest-rising stage, steam during constant temperature
Temperature is no more than 45 DEG C, and plate body core concrete temperature is forbidden more than 55 DEG C, and the maximum temperature duration is no more than 6h.Cooling rank
Section, in temperature-fall period, concrete has been hardened, and is such as lowered the temperature too fast, and concrete can produce surface crack, therefore cooling rate is necessary
It is controlled by, 15 DEG C is must not exceed per hour.
Filling concrete it is complete it is rear it is quiet stop after the completion of set up maintenance canopy immediately, cover tarpaulin, make steam-energy reach it is upper and lower, left,
Right circulation.Tarpaulin will be covered tightly, with good heat insulation property.
When temperature is higher than 5 DEG C, the method that pond maintenance is conserved after terminating using spray, and use combined type geotextiles pair
Concrete surface is covered.
The present invention has the advantages that mechanical property is good, reliable in quality, with preferable application prospect.
Specific embodiment
The present embodiment making step includes：
(1) mould is installed
(2) cloth
Concrete point two-layer carries out cloth, is progressively carried out from one end to the other end, and ground floor fabric thickness is concrete
The 1/2~2/3 of native bridge plate, the second layer is filled, and need to be higher by 0~3mm of die end side form.Fold shape rubber is laid in concrete bottom
Adhesive plaster, top of concrete forms zigzag after concrete hardening.
(3) concreting
Concrete vibrating is shaken mode using side, and vibrator vibration frequency should be adjusted to 100~110Hz.Concrete vibration time root
Adjusted accordingly according to concrete slump and situation of vibrating, first time vibrating time is 100s~140s, and vibrating to surface has bright
Untill aobvious laitance；Second vibrating time is 60s~100s, vibrates to concrete surface no longer significantly to sink in level, no longer
There is air pocket, laitance is showed on surface.
After concrete vibrating completes 3min, concrete surface can be wiped one's face, and side fillet is filled out in attention.Concrete is smeared
After flat, bristle must be carried out to concrete surface.Bristle depth is 2~3mm, 5~8mm of spacing, and must not have laitance, tight before final set
Taboo is trampled.
After concrete vibrating completes 20~30min, the geotextiles moistened with water are added a cover in concrete surface, and it is anti-to sprinkle water
Only concrete moisture loss is too fast.
(4) vacuum pressed infiltration
Treat that concrete bridge plate intensity reaches 30MPa, concrete bridge plate is put into chemical saturation tank by dismounting mould carries out vacuum
Pressurization infiltration, the chemical raw material of chemical saturation tank is diallyl p phthalate.Vacuum pressed infiltration pressurization value is used
1.5MPa。
(5) radiation exposure
Concrete bridge plate is irradiated using X-ray, is heated while X-ray is irradiated, amount of radiation is true
It is set to 1.6 × 1010cd/m2, the heat time is 10h.
(6) concrete curing
Concrete curing is divided into steam curing, spray two stages of maintenance.
Steam curing uses small-sized maintenance canopy fencing lawn method, and steam curing has four-stage：Rest the stage, concrete
Pour to finish and first place a period of time to before heating up.Quiet period workshop temperature of stopping preferably must be held in 5 DEG C~30 DEG C, after the completion of perfusion
It is quiet to stop no less than 3h.Temperature rise period, concrete original temperature rises to the constant temperature stage, and programming rate is no more than 15C per hour.It is permanent
Thermophase, vapor (steam) temperature is no more than 45 DEG C during constant temperature, and plate body core concrete temperature is forbidden more than 55 DEG C, when maximum temperature continues
Between be no more than 6h.Temperature-fall period, in temperature-fall period, concrete has been hardened, and is such as lowered the temperature too fast, and concrete can produce surface to split
Stitch, therefore cooling rate must be controlled by, and 15 DEG C are must not exceed per hour.
Filling concrete it is complete it is rear it is quiet stop after the completion of set up maintenance canopy immediately, cover tarpaulin, make steam-energy reach it is upper and lower, left,
Right circulation.Tarpaulin will be covered tightly, with good heat insulation property.
When temperature is higher than 5 DEG C, the method that pond maintenance is conserved after terminating using spray, and use combined type geotextiles pair
Concrete surface is covered.
Claims (3)
1. a kind of preparation method of concrete bridge plate, it is characterized in that making step includes：
(1) mould is installed
(2) cloth
Concrete point two-layer carries out cloth, is progressively carried out from one end to the other end, and ground floor fabric thickness is precast concrete bridge
The 1/2~2/3 of plate, the second layer is filled, and need to be higher by 0~3mm of die end side form；Fold shape rubber is laid in concrete bottom
Cloth, top of concrete forms zigzag after concrete hardening；
(3) concreting
Concrete vibrating is shaken mode using side, and vibrator vibration frequency should be adjusted to 100~110Hz；Concrete vibration time is according to mixed
The solidifying soil slump and situation of vibrating are adjusted accordingly, and first time vibrating time is 100s~140s, and vibrating to surface has substantially floating
Untill slurry；Second vibrating time is 60s~100s, vibrates to concrete surface no longer significantly to sink in level, is no longer occurred
Show laitance in air pocket, surface；
After concrete vibrating completes 3min, concrete surface can be wiped one's face, and side fillet is filled out in attention；Concrete is floating
Afterwards, bristle must be carried out to concrete surface；
After concrete vibrating completes 20~30min, the geotextiles moistened with water are added a cover in concrete surface, and watering prevents from mixing
Solidifying soil moisture loss is too fast；
(4) vacuum pressed infiltration
Treat that concrete bridge plate intensity reaches 30MPa, concrete bridge plate is put into chemical saturation tank by dismounting mould carries out vacuum pressed
Infiltration, the chemical raw material of chemical saturation tank is diallyl p phthalate；
(5) radiation exposure
Concrete bridge plate is irradiated using X-ray, is heated while X-ray is irradiated, amount of radiation is defined as
1.6×1010cd/m2, the heat time is 10h；
(6) concrete curing
Concrete curing is divided into steam curing, spray two stages of maintenance；
Steam curing uses small-sized maintenance canopy fencing lawn method, and steam curing has four-stage：Rest the stage, concreting
Finish and first place a period of time to before heating up；It is quiet stop during workshop temperature preferably must be held in 5 DEG C~30 DEG C, it is quiet after the completion of perfusion to stop
No less than 3h；Temperature rise period, concrete original temperature rises to the constant temperature stage, and programming rate is no more than 15C per hour；Constant temperature rank
Section, vapor (steam) temperature is no more than 45 DEG C during constant temperature, and plate body core concrete temperature is forbidden more than 55 DEG C, and the maximum temperature duration is not
More than 6h；Temperature-fall period, cooling rate must not exceed 15 DEG C per hour；
Filling concrete it is complete it is rear it is quiet stop after the completion of set up maintenance canopy immediately, cover tarpaulin, steam-energy is reached upper and lower, left and right and follow
Circulation leads to；Tarpaulin will be covered tightly, with good heat insulation property；
When temperature is higher than 5 DEG C, the method that pond maintenance is conserved after terminating using spray, and using combined type geotextiles to coagulation
Native surface is covered.
2. the preparation method of concrete bridge plate according to claim 1, it is characterized in that vacuum pressed infiltration pressurization value is used
1.5MPa。
3. the preparation method of concrete bridge plate according to claim 1, it is characterized in that bristle depth is 2~3mm, spacing 5
~8mm, and must not have laitance, forbid to trample before final set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079723.9A CN106671247A (en) | 2017-02-04 | 2017-02-04 | Manufacturing method for concrete bridge plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079723.9A CN106671247A (en) | 2017-02-04 | 2017-02-04 | Manufacturing method for concrete bridge plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106671247A true CN106671247A (en) | 2017-05-17 |
Family
ID=58862164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710079723.9A Pending CN106671247A (en) | 2017-02-04 | 2017-02-04 | Manufacturing method for concrete bridge plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106671247A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759247A (en) * | 2017-09-28 | 2018-03-06 | 武汉大学 | Concrete moisture retention spray conserves warm and humid wind coupling Intelligentized method |
| CN109676770A (en) * | 2018-12-29 | 2019-04-26 | 安徽华城兴建材科技有限公司 | A kind of production method of cement waffle slab |
| CN112359695A (en) * | 2020-11-09 | 2021-02-12 | 李朝恒 | Road cementation of fissures device for municipal works |
Citations (4)
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|---|---|---|---|---|
| CN1276456A (en) * | 1999-10-25 | 2000-12-13 | 刘新方 | Integrally poured bar-reinforced concrete member with built-in sandwich mould as hidden frame structure |
| EP1510313A2 (en) * | 2003-08-26 | 2005-03-02 | PASCHAL-WERK G. MAIER GmbH | Mould for a hollow body comprising a circular wall |
| CN101830036A (en) * | 2010-04-29 | 2010-09-15 | 中国建筑股份有限公司 | Concrete track slab prefabricating construction method of CRTS I type slab ballastless track |
| CN202658753U (en) * | 2012-07-12 | 2013-01-09 | 西安文昊新型建材有限公司 | Composite external-wall insulation board |
-
2017
- 2017-02-04 CN CN201710079723.9A patent/CN106671247A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1276456A (en) * | 1999-10-25 | 2000-12-13 | 刘新方 | Integrally poured bar-reinforced concrete member with built-in sandwich mould as hidden frame structure |
| EP1510313A2 (en) * | 2003-08-26 | 2005-03-02 | PASCHAL-WERK G. MAIER GmbH | Mould for a hollow body comprising a circular wall |
| CN101830036A (en) * | 2010-04-29 | 2010-09-15 | 中国建筑股份有限公司 | Concrete track slab prefabricating construction method of CRTS I type slab ballastless track |
| CN202658753U (en) * | 2012-07-12 | 2013-01-09 | 西安文昊新型建材有限公司 | Composite external-wall insulation board |
Non-Patent Citations (1)
| Title |
|---|
| 梁松等: "《土木工程材料（上册）》", 31 August 2007, 广州：华南理工大学出片社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759247A (en) * | 2017-09-28 | 2018-03-06 | 武汉大学 | Concrete moisture retention spray conserves warm and humid wind coupling Intelligentized method |
| CN109676770A (en) * | 2018-12-29 | 2019-04-26 | 安徽华城兴建材科技有限公司 | A kind of production method of cement waffle slab |
| CN109676770B (en) * | 2018-12-29 | 2020-07-17 | 安徽华城兴建材科技有限公司 | Production method of cement grid plate |
| CN112359695A (en) * | 2020-11-09 | 2021-02-12 | 李朝恒 | Road cementation of fissures device for municipal works |
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Application publication date: 20170517 |
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