CN106320711B - Concrete vacuum dehydration construction method - Google Patents
Concrete vacuum dehydration construction method Download PDFInfo
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- CN106320711B CN106320711B CN201610846067.6A CN201610846067A CN106320711B CN 106320711 B CN106320711 B CN 106320711B CN 201610846067 A CN201610846067 A CN 201610846067A CN 106320711 B CN106320711 B CN 106320711B
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- concrete
- gasket
- filter cloth
- silica gel
- vacuum
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to a kind of concrete plane construction method, specifically a kind of concrete vacuum dehydration construction method；Including having the following steps；A, spread concrete and levelling of vibrating；B is laid with water absorption pad and seals, and water absorption pad includes filter cloth and gasket, and the upper surface of filter cloth is provided with crisscross silica gel convex ribs, and the crossover location of silica gel convex ribs is equipped with columnar silica gel protrusion, and the edge of gasket is the diaphragm seal for overlapping and being staggered up and down；C connects vacuum hydroextractor and is dehydrated, and the vacuum degree of dehydration is gradually increased to 0.6~0.87bar since 0bar within the 3min times, when vacuum hydroextractor water outlet substantially anhydrous outflow, then shuts down；D removes water absorption pad and smoothes out concrete, according to conventional maintenance；Using the concrete vacuum dehydration construction method of technical solution of the present invention, easy construction, good airproof performance, dehydrating effect is good.
Description
Technical field
The present invention relates to a kind of concrete plane construction method, specifically a kind of concrete vacuum dehydration construction party
Method.
Background technology
Concrete is to make cementitious material with cement, and sand, masonry gather materials, with water, additive by a certain percentage coordinate stirring and
The mixture obtained.Concrete needs the regular hour to carry out condensation hardening after construction is completed, and condensation hardening is exactly a certain amount of
Water and cement carry out hydration process.Many experiments find that the ratio of mud is 0.23~0.28, and aquation can be carried out fully.
But the concrete compared with low water-cement ratio mixing is used, since water content is less, poor fluidity, pouring molding is difficult, both influences coagulation
The workability of soil, and cannot be guaranteed the density after concrete hardening.Therefore, in practice of construction, the practical water of concrete
Gray scale is higher than 0.28, to increase the mobility mixed and stirred, but use compared with high water-cement ratio can influence concrete density and intensity, with
And long durability energy.Meanwhile to meet pumping construction demand, the slump of concrete is usually larger, and plastic shrinkage is larger, easily
Generate cracking, surface bleeding leads to the mass defects such as dusting, the hot spot that these defects are often complained as quality.Since concrete is each
The density variation of kind of material on cement mortar rises to the surface, directly results in that its surface strength is relatively low, wearability reduces, so that not
Few wearability requires high ground and floor to have to increase by one layer of wearing layer, increases project cost.
Caused by solving the problems, such as above-mentioned concrete water-cement ratio height, it can be applied using vacuum dehydration in concrete construction
Work technique uses vacuum hydroextractor to extract moisture extra in the concrete compared with high water-cement ratio and air out, to obtain phase
The ideal ratio of mud answered, to ensure the intensity, compactness and wearability of concrete.Although this construction technology can be to a certain degree
Excessive moisture and air in upper removal concrete, but some problems are still had in real process：Such as due to gasket is usually
Fold is had, causes gasket gas leakage serious；Since condition of high vacuum degree lower seal pad is completely embedded with concrete, the water in concrete
Flow channel it is smaller.
Invention content
The purpose of the present invention is to provide a kind of easy construction, good airproof performance, the good construction methods of dehydrating effect.
To achieve the above object, the present invention provides a kind of concrete vacuum dehydration construction method, including has the following steps：
A, spread concrete and levelling of vibrating：Continuous placing and spread concrete, then vibrate to its surface no longer to sink
Until, then it is levelling using Slicking apparatus；
B is laid with water absorption pad and seals：Water absorption pad includes filter cloth and gasket, is laid with filters in concrete surface first
The mesh of cloth, filter cloth is less than 1mm, and the upper surface of filter cloth is provided with crisscross silica gel convex ribs, the intersection of silica gel convex ribs
Position is equipped with columnar silica gel protrusion, and the axial cross section of silica gel protrusion is at I-shaped, the edge distance template frame 100 of filter cloth
~200mm, is then laid with gasket above filter cloth, the projected area oversite concrete upper surface of gasket, gasket
Edge is the diaphragm seal for overlapping and being staggered up and down, and at least provided with 3 layers, the thickness in monolayer of the diaphragm seal is no more than diaphragm seal
1mm；
C connects vacuum hydroextractor and is dehydrated：Setting dehydration pipe fitting, the connector pass through dehydration above the middle part of gasket
Pipe connects vacuum hydroextractor, the vacuum degree of dehydration since 0bar, be gradually increased to 0.6 within the 3min times~
Then 0.87bar is shut down when vacuum hydroextractor water outlet substantially anhydrous outflow；
D removes water absorption pad and smoothes out concrete：The edge of gasket is gently started convex to the silica gel leaked out on filter cloth
It rises, then allows air pressure gradually to balance 2~3min, then remove gasket and filter cloth respectively, require to smooth out according to conventional design mixed
Solidifying soil, and continue maintenance.
There are following features using the concrete vacuum dehydration construction method of technical solution of the present invention：Due in filter cloth
Crisscross silica gel convex ribs are arranged in upper surface, and the crossover location of silica gel convex ribs is equipped with columnar silica gel protrusion, silica gel protrusion
Axial cross section is this to design the intensity that both improved filter cloth at I-shaped, while reducing the weight of gasket, prior
It is that silica gel convex ribs, silica gel protrusion and filter cloth and gasket remain to form passage slit when vacuum degree increases, facilitates water
Flowing and collect；Since the edge of gasket is the diaphragm seal for overlapping and being staggered up and down, diaphragm seal at least provided with 3 layers, this
The multiple edges for the diaphragm seal that sample is staggered form mutually matched sealing strip, even if fold has occurred in the diaphragm seal of a certain layer,
Diaphragm seal on the inside or outside of it will not form the fold of connection due to being independently arranged, and channel is blocked, simultaneously because external big
The effect of air pressure, fold part can also be easy to be squeezed rapidly by the closed diaphragm seal in outside, and then close；Therefore compared to biography
The sealing means of system, sealing effect are more preferable.
Preferably, in order to ensure the intensity of filter cloth, while ensureing it all to the support effect of gasket, it is described
Filter cloth is rubberized fabric, and the silica gel height of projection is no more than 5mm, and the silica gel fin height is no more than 3mm.
Preferably, in order to further increase the sealing effect of diaphragm seal, while ensureing bonding strength, the sealing
The overlapping area of film adjacent two layers is not less than the one third of the inner seal film gross area, while the overlapping area is at least adjacent
2 times of two layers of sealed connection face.
Preferably, in order to be supported to softer gasket, worker is facilitated to be adjusted when being laid with to it
Position is provided with the channel balloon for intersecting perforation in length and breadth above the gasket, be provided on the channel balloon it is closed into
Mouth and outlet are provided with crush seal film to further increase the crush seal effect of gasket above subgasket edges
Annular storage chamber.
Description of the drawings
Fig. 1 is the overlooking structure diagram of the embodiment of the present invention；
Fig. 2 is the broken section structural schematic diagram of the embodiment of the present invention；
Fig. 3 is the enlarged diagram of part A in Fig. 2.
Wherein, concrete 1, filter cloth 2, gasket 3, silica gel convex ribs 4, silica gel protrusion 5, Form board frame 6, diaphragm seal 7 lead to
Road air bag 8, annular storage chamber 9.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments：
：The present invention provides a kind of concrete vacuum dehydration construction method, includes following step
Suddenly：
A, spread concrete and levelling of vibrating：Continuous placing and spread concrete 1, then vibrate to 1 surface of concrete not
Until sinking again, process of vibrating should avoid encountering Form board frame 6, then levelling using Slicking apparatus；
B is laid with water absorption pad and seals：Water absorption pad includes filter cloth 2 and gasket 3, is laid with first on 1 surface of concrete
Filter cloth 2, filter cloth 2 are rubberized fabric, and the mesh of filter cloth 2 is less than 1mm, and the upper surface of filter cloth 2 is provided with crisscross silicon
The crossover location of glue convex ribs 4, silica gel convex ribs 4 is equipped with columnar silica gel protrusion 5, and the axial cross section of silica gel protrusion 5 is at I-shaped, silicon
Glue 5 height of protrusion are no more than 5mm, and 5mm, 4 height of silica gel convex ribs is selected to be no more than 3mm, select 2mm herein herein, filter cloth 2
Edge is generally 100~200mm with a distance from Form board frame 6, is selected as 120mm herein, is then laid with above filter cloth 2 close
The edge of packing 3,1 upper surface of projected area oversite concrete of gasket 3, gasket 3 is the sealing for overlapping and being staggered up and down
Film 7, diaphragm seal 7 is at least provided with 3 layers, and the present embodiment uses 3 layers, and the overlapping area of 7 adjacent two layers of diaphragm seal is no less than interior
The one third of the side seal film gross area, while the overlapping area is at least 2 times that adjacent two layers are tightly connected face, it can with guarantee
Energy leaked-in air is trapped between two superposed surfaces, while air extrusion lower section diaphragm seal is to improve sealing effect, diaphragm seal 7
Thickness in monolayer be no more than 1mm, preferably with by the thinning mode of Inside To Outside gradient, material is silica gel；
C connects vacuum hydroextractor and is dehydrated：Setting dehydration pipe fitting, the connector pass through dehydration above the middle part of gasket
Pipe connects vacuum hydroextractor, the vacuum degree of dehydration since 0bar, be gradually increased to 0.6 within the 3min times~
0.87bar, such mode can ensure the uniformity of vacuum dehydration, to ensureing that concrete entirety homogeneous quality is extremely important,
When vacuum hydroextractor water outlet substantially anhydrous outflow, then shut down；
D removes water absorption pad and smoothes out concrete：The edge of gasket is gently started convex to the silica gel leaked out on filter cloth
It rising, then air pressure is allowed gradually to balance 2~3min, this process can reduce the cohesive force of gasket, filter cloth and concrete,
Remove respectively it is more easy and convenient when gasket and filter cloth, according to design requirement smooth out concrete, and continue conventionally
Maintenance.
The channel balloon 8 for intersecting perforation in length and breadth can be also arranged in the top of gasket 3, be provided on channel balloon 8 closed
Inlet and outlet after being inflated for it by the outlet of vacuum hydroextractor, can make gasket 3 struts automatically to be moved easily；This
The annular storage chamber 9 of crush seal film 7 can be also set above the edge of external seal pad 3, and the water of annular storage chamber 9 can be vacuum
The water that dewaterer is added when starting to work, the water flowed out after partial vacuum dewaterer can also be taken to work, to improve gasket 3
Crush seal effect.
What has been described above is only a preferred embodiment of the present invention, and the common sense such as well known concrete structure and characteristic exist in scheme
This is not described excessively, it is noted that for those skilled in the art, without departing from the structure of the invention,
Several modifications and improvements can also be made, these should also be considered as protection scope of the present invention, these all do not interfere with the present invention
The effect and patent practicability of implementation.
Claims (1)
1. a kind of concrete vacuum dehydration construction method, it is characterised in that：Including having the following steps：
A, spread concrete and levelling of vibrating：Continuous placing and spread concrete, then vibrate until its surface no longer sinks,
Use Slicking apparatus levelling again；
B is laid with water absorption pad and seals：Water absorption pad includes filter cloth and gasket, is laid with filter cloth, mistake in concrete surface first
The mesh of filter cloth is less than 1mm, and the upper surface of filter cloth is provided with crisscross silica gel convex ribs, and the crossover location of silica gel convex ribs is set
Have a columnar silica gel protrusion, the axial cross section of silica gel protrusion at I-shaped, the edge distance template frame 100 of filter cloth~
Then 200mm is laid with gasket, the projected area oversite concrete upper surface of gasket, the side of gasket above filter cloth
Along the diaphragm seal to overlap and being staggered up and down, for diaphragm seal at least provided with 3 layers, the thickness in monolayer of the diaphragm seal is no more than 1mm；
C connects vacuum hydroextractor and is dehydrated：Setting dehydration pipe fitting, the connector are connected by dehydrating tube above the middle part of gasket
Vacuum hydroextractor is connect, the vacuum degree of dehydration is gradually increased to 0.6~0.87bar since 0bar within the 3min times, when
Vacuum hydroextractor water outlet substantially anhydrous outflow when, then shut down；
D removes water absorption pad and smoothes out concrete：The edge of gasket is gently started to the silica gel protrusion leaked out on filter cloth,
Then it allows air pressure gradually to balance 2~3min, then removes gasket and filter cloth respectively, require to smooth out coagulation according to conventional design
Soil, and continue maintenance；
It is provided with the channel balloon for intersecting perforation in length and breadth above the gasket, closed import is provided on the channel balloon
And outlet, subgasket edges top are provided with the annular storage chamber of crush seal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610846067.6A CN106320711B (en) | 2016-09-23 | 2016-09-23 | Concrete vacuum dehydration construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610846067.6A CN106320711B (en) | 2016-09-23 | 2016-09-23 | Concrete vacuum dehydration construction method |
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| Publication Number | Publication Date |
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| CN106320711A CN106320711A (en) | 2017-01-11 |
| CN106320711B true CN106320711B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565958B (en) * | 2019-09-24 | 2023-09-05 | 上海市水利工程集团有限公司 | Method for removing bleeding in large-volume concrete by vacuum pumping and discharging and preventing structural cracking |
| CN115405105A (en) * | 2022-08-26 | 2022-11-29 | 中国铁建大桥工程局集团有限公司 | Water-saturated concrete dehydration device and dehydration method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207779U (en) * | 1986-10-24 | 1987-12-05 | 国家建材局苏州混凝土水泥制品研究院 | Concrete vacuum dewatering absorption pad without filter |
| CN2081792U (en) * | 1990-11-13 | 1991-07-31 | 河北建筑工程学院 | Dewatering and shaping unit for concrete member |
| JPH07305510A (en) * | 1994-05-11 | 1995-11-21 | Kiyuuken Sangyo Kk | Vacuum concrete construction method |
| CN101487250A (en) * | 2009-02-26 | 2009-07-22 | 中冶京唐建设有限公司 | Concrete vacuum dehydration construction method for filling pile |
-
2016
- 2016-09-23 CN CN201610846067.6A patent/CN106320711B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207779U (en) * | 1986-10-24 | 1987-12-05 | 国家建材局苏州混凝土水泥制品研究院 | Concrete vacuum dewatering absorption pad without filter |
| CN2081792U (en) * | 1990-11-13 | 1991-07-31 | 河北建筑工程学院 | Dewatering and shaping unit for concrete member |
| JPH07305510A (en) * | 1994-05-11 | 1995-11-21 | Kiyuuken Sangyo Kk | Vacuum concrete construction method |
| CN101487250A (en) * | 2009-02-26 | 2009-07-22 | 中冶京唐建设有限公司 | Concrete vacuum dehydration construction method for filling pile |
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| CN106320711A (en) | 2017-01-11 |
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Address after: The 7th floor, 8th floor and 9th floor, 1596 Jinkai Avenue, North District, Chongqing Economic Development Zone 401120 Patentee after: CHONGQING CONSTRUCTION ENGINEERING BUILDING MATERIALS & LOGISTICS Co.,Ltd. Patentee after: CHONGQING CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Address before: 401122. 9 building, No. 1596, Golden Road, North New District, Chongqing Patentee before: CHONGQING CONSTRUCTION ENGINEERING NEW BUILDING MATERIALS Co.,Ltd. Patentee before: CHONGQING CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |