CN106320711A - Vacuum dewatering construction method of concrete - Google Patents
Vacuum dewatering construction method of concrete Download PDFInfo
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- CN106320711A CN106320711A CN201610846067.6A CN201610846067A CN106320711A CN 106320711 A CN106320711 A CN 106320711A CN 201610846067 A CN201610846067 A CN 201610846067A CN 106320711 A CN106320711 A CN 106320711A
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- concrete
- filter cloth
- silica gel
- sealing gasket
- 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 invention relates to a plane construction method of concrete, in particular to a vacuum dewatering construction method of the concrete. The method comprises the following steps that 1, the concrete is paved and vibrated to be level; 2, a water absorption pad is paved and sealed, wherein the water absorption pad comprises a filter cloth and a sealing pad, criss-cross silica gel convex ribs are arranged on the upper surface of the filter cloth, columnar silica gel protrusions are arranged at the cross positions of the silica gel convex ribs, and the edge of the sealing pad is provided with sealing films which are vertically stacked and staggered; 3, a vacuum dewaterer is started and conducts dewatering, wherein the vacuum degree in the dewatering process is gradually increased to 0.6 bar to 0.87 bar from 0 bar in 3 min, and when no water flows out of a water outlet of the vacuum dewaterer basically, the vacuum dewaterer is stopped; 4, the water absorption pad moved away, the concrete is floated, and then curing is conducted according to conventional method. According to the vacuum dewatering construction method of the concrete, construction is easy and convenient, the sealing property is good, and the dewatering effect is good.
Description
Technical field
The present invention relates to a kind of concrete plane construction method, a kind of concrete vacuum dehydration construction party
Method.
Background technology
Concrete is to make Binder Materials 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 condensing hardening after construction completes, and it is exactly a certain amount of for condensing hardening
Water and cement carry out the process of hydration.Great many of experiments finds that the ratio of mud is 0.23～0.28, and aquation can fully be carried out.
But use the concrete of relatively low water-cement ratio mixing, due to moisture content less, poor fluidity, pour molding difficult, both affected coagulation
The workability of soil, again it cannot be guaranteed that density after concrete hardening.Therefore, in practice of construction, the actual water of concrete
Gray scale is higher than 0.28, with the mobility mixed and stirred of increase, but use relatively high water-cement ratio can affect the density of concrete and intensity, with
And long durability energy.Meanwhile, for meeting pumping construction demand, the slump of concrete is the biggest, and plastic shrinkage is relatively big, easily
Produce cracking, surface bleeding causes the mass defects such as dusting, and these defects often become the focus that quality is complained.Owing to 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 that high ground and floor has to increase by one layer of wearing layer, adds construction costs.
Thrown into question to solve above-mentioned concrete water-cement ratio height, vacuum dehydration can be used in concrete construction to execute
Work technique, i.e. uses vacuum hydroextractor the moisture unnecessary compared with in the concrete of high water-cement ratio and air to be extracted out, thus obtains phase
The preferable ratio of mud answered, to ensure the intensity of concrete, degree of compaction and wearability.Although this construction technology can be to a certain degree
Excessive moisture and air in upper removal concrete, but real process yet suffers from some problems: such as due to sealing gasket is usually
Have fold, cause sealing gasket gas leakage serious；Owing to condition of high vacuum degree lower seal pad is completely embedded with concrete, the water in concrete
Flow channel less.
Summary of the invention
It is an object of the invention to provide a kind of easy construction, good airproof performance, the construction method that dehydrating effect is good.
For achieving the above object, the present invention provides a kind of concrete vacuum dehydration construction method, comprises the following steps that
A, spread concrete levelling of vibrating: continuous placing spread concrete, then vibrate to its surface no longer to sink
Till, then use Slicking apparatus levelling；
B, lays adsorptive pads and seals: adsorptive pads includes filter cloth and sealing gasket, first lays at concrete surface and filters
Cloth, the mesh of filter cloth is less than 1mm, and the upper surface of filter cloth is provided with crisscross silica gel convex tendon, the intersection of silica gel convex tendon
The silica gel that position is provided with column is protruding, and the axial cross section of silica gel projection becomes I-shaped, the edge distance template frame 100 of filter cloth
～200mm, then laying sealing gasket above filter cloth, the projected area oversite concrete upper surface of sealing gasket, sealing gasket
Edge is the diaphragm seal overlapping up and down and staggering, and diaphragm seal is at least provided with having three layers, and the thickness in monolayer of described diaphragm seal is less than
1mm；
C, connects vacuum hydroextractor and is dehydrated: the middle part of sealing gasket is provided above dehydrating tube joint, and this joint is by dehydration
Pipe connect vacuum hydroextractor, the vacuum of dehydration from the beginning of 0bar, be gradually increased within the 3min time 0.6～
0.87bar, when vacuum hydroextractor outlet flows out substantially free of water, then shuts down；
D, removes adsorptive pads floating concrete: start to the silica gel spilling on filter cloth convex gently by the edge of sealing gasket
Rise, then allow air pressure gradually balance 2～3min, then remove sealing gasket and filter cloth respectively, require according to conventional design floating mixed
Solidifying soil, and continue maintenance.
The concrete vacuum dehydration construction method using technical solution of the present invention has a characteristic that due at filter cloth
Upper surface arranges crisscross silica gel convex tendon, and the silica gel that the crossover location of silica gel convex tendon is provided with column is protruding, silica gel projection
Axial cross section becomes I-shaped, and this design both can improve the intensity of filter cloth, reduces the weight of sealing gasket simultaneously, prior
It is that silica gel convex tendon, silica gel projection and filter cloth and sealing gasket remain to form passage slit when vacuum increases, facilitates water
Flowing and collect；Owing to the edge of sealing gasket is the diaphragm seal overlapping up and down and staggering, diaphragm seal at least provided with having three layers, this
Multiple edges of the diaphragm seal that sample staggers define the sealing strip cooperated, even if the diaphragm seal of a certain layer there occurs fold,
The diaphragm seal in inside it or outside, owing to being independently arranged, will not form the fold of connection, and passage is blocked, simultaneously because outside big
The effect of air pressure, the diaphragm seal that fold part also can be easy to be closed by outside extrudes rapidly, and then closes；Therefore compared to biography
The sealing means of system, its sealing effectiveness is more preferable.
Preferably, in order to ensure the intensity of filter cloth, ensure its all support effect to sealing gasket simultaneously, described
Filter cloth is rubberized fabric, and described silica gel height of projection is less than 5mm, and described silica gel fin height is less than 3mm.
Preferably, in order to improve the sealing effectiveness of diaphragm seal further, ensure bonding strength, described sealing simultaneously
The overlapping area of film adjacent two layers is not less than 1/3rd of the inner seal film gross area, and this overlapping area is the most adjacent simultaneously
Two-layer is tightly connected 2 times of face.
Preferably, in order to softer sealing gasket is supported, workman is facilitated to adjust when it is laid
Position, being provided above of described sealing gasket is intersected through channel balloon in length and breadth, this channel balloon is provided with entering of closing
Mouth and outlet, in order to improve the crush seal effect of sealing gasket further, subgasket edges is provided above crush seal film
Annular storage chamber.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the broken section structural representation 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, sealing gasket 3, silica gel convex tendon 4, silica gel projection 5, Form board frame 6, diaphragm seal 7 is logical
Road air bag 8, annular storage chamber 9.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings:
As shown in Figure 1, Figure 2 and Figure 3: the present invention provides a kind of concrete vacuum dehydration construction method, following step is included
Rapid:
A, spread concrete levelling of vibrating: continuous placing spread concrete 1, then vibrate to concrete 1 surface not
Till sinking, the process of vibrating should avoid encountering Form board frame 6, then uses Slicking apparatus levelling again；
B, lays adsorptive pads and seals: adsorptive pads includes filter cloth 2 and sealing gasket 3, first lays on concrete 1 surface
Filter cloth 2, filter cloth 2 is 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
Glue convex tendon 4, the crossover location of silica gel convex tendon 4 is provided with the silica gel projection 5 of column, and the axial cross section of silica gel projection 5 becomes I-shaped, silicon
Protruding 5 height of glue, less than 5mm, select 5mm, silica gel convex tendon 4 height less than 3mm, to select 2mm herein herein, filter cloth 2
Edge is generally 100～200mm far from the distance of Form board frame 6, is chosen as 120mm herein, then lays close above filter cloth 2
Packing 3, projected area oversite concrete 1 upper surface of sealing gasket 3, the edge of sealing gasket 3 is the sealing overlapping up and down and staggering
Film 7, diaphragm seal 7 is at least provided with having three layers, and the present embodiment uses 3 layers, in the overlapping area of diaphragm seal 7 adjacent two layers is no less than
/ 3rd of the side seal film gross area, this overlapping area at least adjacent two layers is tightly connected 2 times of face simultaneously, so that ensure can
Can leaked-in air dammed between two superposed surfaces, simultaneously below air extrusion diaphragm seal to improve sealing effectiveness, diaphragm seal 7
Thickness in monolayer less than 1mm, preferably with by the thinning mode of Inside To Outside gradient, material is silica gel；
C, connects vacuum hydroextractor and is dehydrated: the middle part of sealing gasket is provided above dehydrating tube joint, and this joint is by dehydration
Pipe connect vacuum hydroextractor, the vacuum of dehydration from the beginning of 0bar, be gradually increased within the 3min time 0.6～
0.87bar, such mode can ensure that the uniformity of vacuum dehydration, to ensureing that concrete entirety homogeneous quality is extremely important,
When vacuum hydroextractor outlet flows out substantially free of water, then shut down；
D, removes adsorptive pads floating concrete: start to the silica gel spilling on filter cloth convex gently by the edge of sealing gasket
Rising, then allow air pressure gradually balance 2～3min, this process can reduce the cohesive force of sealing gasket, filter cloth and concrete,
Remove when sealing gasket and filter cloth more easy and convenient respectively, require floating concrete according to design, and continue conventionally
Maintenance.
The top of sealing gasket 3 also can be arranged intersects through channel balloon 8 in length and breadth, and channel balloon 8 is provided with closing
Inlet and outlet, after being its inflation by the outlet of vacuum hydroextractor, is moved easily so that sealing gasket 3 struts automatically；This
Also can arrange the annular storage chamber 9 of crush seal film 7 above the edge of external seal pad 3, the water of annular storage chamber 9 can be vacuum
The water that dewaterer adds when starting working, it is also possible to the water flowed out after taking the work of partial vacuum dewaterer, to improve sealing gasket 3
Crush seal effect.
Above-described is only the preferred embodiment of the present invention, and in scheme, the known general knowledge such as concrete structure and characteristic exists
This too much describes, it is noted that for a person skilled in the art, on the premise of without departing from present configuration,
Can also make some deformation and improvement, these also should be considered as protection scope of the present invention, and these are all without affecting the present invention
The effect implemented and practical applicability.
Claims (4)
1. a concrete vacuum dehydration construction method, it is characterised in that: comprise the following steps that
A, spread concrete levelling of vibrating: continuous placing spread concrete, then vibrate no longer sinking to its surface,
Use Slicking apparatus levelling again；
B, lays adsorptive pads and seals: adsorptive pads includes filter cloth and sealing gasket, first lays filter cloth, mistake at concrete surface
The mesh of filter cloth is less than 1mm, and the upper surface of filter cloth is provided with crisscross silica gel convex tendon, and the crossover location of silica gel convex tendon sets
The silica gel having column is protruding, and the protruding axial cross section of silica gel becomes I-shaped, the edge distance template frame 100 of filter cloth～
200mm, then lays sealing gasket, the projected area oversite concrete upper surface of sealing gasket, the limit of sealing gasket above filter cloth
Along the diaphragm seal for overlapping up and down and stagger, diaphragm seal is at least provided with having three layers, and the thickness in monolayer of described diaphragm seal is less than 1mm；
C, connects vacuum hydroextractor and is dehydrated: the middle part of sealing gasket is provided above dehydrating tube joint, and this joint is by dehydrating tube even
Connecing vacuum hydroextractor, the vacuum of dehydration, from the beginning of 0bar, is gradually increased to 0.6～0.87bar within the 3min time, when
When vacuum hydroextractor outlet flows out substantially free of water, then shut down；
D, removes adsorptive pads floating concrete: started at the edge of sealing gasket to the silica gel spilling on filter cloth protruding gently,
Then allow air pressure gradually balance 2～3min, then remove sealing gasket and filter cloth respectively, require floating coagulation according to conventional design
Soil, and continue maintenance.
Concrete vacuum dehydration construction method the most according to claim 1, it is characterised in that: described filter cloth is rubber
Cloth, described silica gel height of projection is less than 5mm, and described silica gel fin height is less than 3mm.
Concrete vacuum dehydration construction method the most according to claim 1, it is characterised in that: described diaphragm seal adjacent two layers
Overlapping area not less than 1/3rd of the inner seal film gross area, this overlapping area is at least adjacent two layers and seals even simultaneously
2 times of junction.
4. according to the concrete vacuum dehydration construction method described in claim 1,2 or 3, it is characterised in that: described sealing gasket
It is provided above intersecting through channel balloon in length and breadth, this channel balloon is provided with the inlet and outlet of closing, sealing gasket limit
Edge is provided above 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 true CN106320711A (en) | 2017-01-11 |
| CN106320711B CN106320711B (en) | 2018-08-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565958A (en) * | 2019-09-24 | 2019-12-13 | 上海市水利工程集团有限公司 | Vacuum pumping, draining and clearing internal bleeding of mass concrete and structure anti-cracking method |
| 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 |
Family Cites Families (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 |
| CN101487250B (en) * | 2009-02-26 | 2010-06-30 | 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
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565958A (en) * | 2019-09-24 | 2019-12-13 | 上海市水利工程集团有限公司 | Vacuum pumping, draining and clearing internal bleeding of mass concrete and structure anti-cracking method |
| 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 |
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| CN106320711B (en) | 2018-08-31 |
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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. |
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