CN110258569A - A kind of concrete water-permeating processing covering back-pressure provisions for grouting and grouting method - Google Patents
A kind of concrete water-permeating processing covering back-pressure provisions for grouting and grouting method Download PDFInfo
- Publication number
- CN110258569A CN110258569A CN201910540672.4A CN201910540672A CN110258569A CN 110258569 A CN110258569 A CN 110258569A CN 201910540672 A CN201910540672 A CN 201910540672A CN 110258569 A CN110258569 A CN 110258569A
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- pressure
- grouting
- covering
- steel plate
- permeating
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
A kind of concrete water-permeating processing covering back-pressure provisions for grouting and grouting method, the device includes covering steel plate, press tuyere, grout nipple, elastic sealing strip, overlay fastener and press seal fastener, when the device carries out concrete water-permeating processing, surrounding is pasted by the covering steel plate single-piece of spring seal strip using expansion bolt or more than one piece combination is sealed on concrete water-permeating surface, the totally-enclosed rear back-pressure grouting treatment apparent to concrete water-permeating can be achieved, grouting uses a kind of epoxy slurry of good penetrability quick setting early strength, pass through the pressure tuyere and grout nipple being arranged on covering steel plate, implement a kind of pressure wind and mud jacking mixing grouting process, effectively concrete water-permeating can be implemented to fill from outside to inside, infiltration, consolidation, reach the waterproofing and leakage-stopping and structure repair double effects to concrete structure seepage defect.
Description
Technical field
The invention belongs to technical field of building construction, and in particular to a kind of concrete water-permeating processing covering back-pressure provisions for grouting
And grouting method.
Background technique
Underground engineering mixes concrete waterproof effect, is to measure one of underground engineering important quality index, is directly related to ground
The corrosion and aging of lower engineering equipment and structure influence the running environment and service life of underground engineering.However, because of concrete
The reasons such as Construction defect, waterproof construction design defect, cause underground engineering concrete different degrees of percolating water occur
Through becoming normality.
In the prior art, cement grout or certain special chemical preparation are mainly used for defects of concrete structure Seepage water
Technical treatment, and continue to use traditional drilling pipe laying and filleting closure grouting technology always, existing technology is only to coagulation
The infiltration that native construction joint, contact seam, structural joint and wide seam occur is effective, and for concrete comb pitted skin, Temperature Cracks etc.
Caused large area infiltration is then difficult to carry out.
Summary of the invention
The embodiment of the present invention solves the prior art by providing a kind of concrete water-permeating processing covering back-pressure provisions for grouting
In, traditional drilling pipe laying and filleting closure grouting technology are for big caused by concrete comb pitted skin, Temperature Cracks etc.
The problem of area infiltration is difficult to carry out.
A kind of concrete water-permeating processing covering back-pressure provisions for grouting, including covering steel plate, press tuyere, and grout nipple is elastic close
Strip of paper used for sealing overlays fastener and press seal fastener;
The pressure tuyere and grout nipple are set to covering steel plate centre;
The press seal fastener is set to the surrounding edge of the covering steel plate;
The elastic sealing strip is pasted onto the surrounding of covering steel plate on the inside of the press seal fastener;
The fastener that overlays is evenly arranged on position among the covering steel plate;
The covering steel plate is overlayed by the fastener that overlays in concrete water-permeating face, and the covering steel plate surrounding is pasted
The elastic sealing strip by the press seal fastener press seal on concrete surface.
Preferably, the covering steel plate is the high-strength elastic steel plate that thickness is less than 3mm.
It is further preferred that the covering steel plate is the stainless steel spring steel plate with a thickness of 1.5~2.0mm.
Preferably, the eyelet that fastener Yu press seal fastener are overlayed described in installation is provided on the covering steel plate.
It is further preferred that being additionally provided with the spare eyelet of installation press seal fastener on the covering steel plate.
The effect of the spare eyelet of press seal fastener is that part is carried out when local blow-by occurs in covering steel plate covering effect
Reinforce press seal.
Preferably, the width of the elastic sealing strip is not less than 5mm, and thickness is not less than 2mm.
It is further preferred that it is 8~10mm that the elastic sealing strip, which is width, with a thickness of the TPE elastic packing of 3~5mm
Item.
Preferably, the pressure tuyere is hollow is connected with the covering steel plate covering cavity, and the pressure tuyere includes successively
Connected pressure tuyere seat, pressure tuyere check-valves and pressure wind connection mouth, the pressure tuyere seat seating plane are directed at connection with covering steel plate
It is welded to connect in the eyelet that covering cavity is opened.
Preferably, the grout nipple is hollow is connected with the covering steel plate covering cavity, and the grout nipple includes successively
Connected grout nipple seat, pressure gauge, pressure meter three-way, drainage valve, gate valve threeway, grouting check-valves and grouting connection mouth, institute
It states grout nipple seat seating plane and is aligned with covering steel plate and be connected to the eyelet that covering cavity opened and be welded to connect.
Preferably, the fastener that overlays includes overlaying expansion bolt, overlay gasket and overlaying cushion rubber, described to overlay expansion
The screw thread specification of bolt is not less than 80mm not less than M6mm, nominal length.
Preferably, the press seal fastener includes press seal expansion bolt and press seal gasket, the spiral shell of the press seal expansion bolt
Line specification is not less than 80mm not less than M6mm, nominal length.
The method that above-mentioned concrete water-permeating processing covering back-pressure provisions for grouting carries out the grouting of covering back-pressure, step include:
S1 carries out the processing of covering steel plate, welding pressure tuyere and grout nipple, pastes elastic sealing strip, forms covering steel plate group
Part, and to covering steel plate component and one layer of remover of concrete binding face coating;
The cleaning of S2 concrete water-permeating face and mark carry out covering back-pressure provisions for grouting according to concrete water-permeating surface treatment range
Combine layout design;
S3 successively installs every covering steel plate component according to following process:
It requires overlay fastener according to arrangement and press seal fastener receptacles eye drills, then expansion bolt is installed,
Covering steel plate component is installed again, expansion bolt nut is finally tightened by covering steel plate component and is sealed on concrete surface;
S4, to pressure wind air duct, is owned using pressure all pressure tuyeres of wind sebific duct parallel communication using grouting rubber pipe parallel communication
Grout nipple is to the flow inlet that is in the milk;
S5 closes drainage valve, by pressure wind supervisor directly to covering infiltration face pressure wind inspection and confirmation covering back-pressure grouting
After device combines covering effect, stop pressure wind observed pressure table seepage pressure value;
S6 opens drainage valve, while by pressure wind air duct to concrete water-permeating face pressure wind, net to drainage valve discharge
When wind, all drainage valves are closed one by one, and infiltration face is pressed according to the effective wind pressure control set after seepage pressure is subtracted
Wind;
S7 is perfused Thief zone to concrete water-permeating face back-pressure by grouting flow inlet and coagulates epoxy slurry fastly, and grouting injection rate is suitable
According to be less than 0.1L/min controlled, until grouting pressure reach subtract seepage pressure after set effective pressure when, control
Pressure is constant to continue screen slurry 30min or more, stops mixing pressure wind and mud jacking;
All combined flue pipes of S8 removal grouting and slurry are managed, and epoxy grouting pipeline and equipment are cleaned;
S9 twists off all expansion bolt nuts after solidifying 60min or more, removes covering back-pressure provisions for grouting assembly, and cutting is outer
The dilating screw of leakage roots out the grouting epoxy of evagination gel, and to treated, concrete water-permeating face is modified.
Concrete water-permeating provided in an embodiment of the present invention handles covering back-pressure provisions for grouting, with can be widely applied to city
The underground engineerings concrete structure Seepage water such as iron, basement building, water power underground power house, traffic tunnel, it is applied widely,
High treating effect.
Compared with prior art, the beneficial effects of the present invention are: existing underground engineering defects of concrete structure leakage
Reason technology is only applicable to the apparently seepage treatment in " point seeps " or " line infiltration " character, and for being apparently in the leakage of " face infiltration " character
It is difficult to carry out effective closing and grouting treatment.A kind of concrete water-permeating processing covering back-pressure grouting dress of the embodiment of the present invention
It sets, surrounding is pasted by the covering steel plate single-piece of spring seal strip using expansion bolt or more than one piece combination is sealed on concrete water-permeating
Surface, it can be achieved that it is apparent to concrete water-permeating it is totally-enclosed after back-pressure grouting treatment, grouting is coagulated early fastly using a kind of good penetrability
Strong epoxy slurry implements a kind of pressure wind and mixes grouting with mud jacking by the pressure tuyere and grout nipple being arranged on covering sheet metal
Technique can effectively implement filling, infiltration, consolidation from outside to inside to concrete water-permeating, reach to concrete structure seepage defect
Waterproofing and leakage-stopping and structure repair double effects.
Detailed description of the invention
Fig. 1 is the concrete water-permeating processing unit reverse side schematic diagram of embodiment 1.
Fig. 2 be pressure fan structure A-A to diagrammatic cross-section.
Fig. 3 is the diagrammatic cross-section of grouting mechanism B-B direction.
Fig. 4 be the first fastener C-C to diagrammatic cross-section.
Fig. 5 be the second fastener D-D to diagrammatic cross-section.
Fig. 6 covering back-pressure provisions for grouting is combined and spliced to use schematic diagram.
Specific embodiment
The embodiment of the present invention handles covering back-pressure provisions for grouting and grouting method by providing a kind of concrete water-permeating, solves
In the prior art, traditional drilling pipe laying and filleting closure grouting technology are for concrete comb pitted skin, Temperature Cracks
The technical issues of infiltration of the large area Deng caused by is difficult to carry out.
In order to better understand the above technical scheme, being carried out below in conjunction with specific embodiment to above-mentioned technical proposal
It explains in detail.
Embodiment 1
A kind of concrete water-permeating processing covering back-pressure provisions for grouting, as shown in Figure 1, tuyere 20 is pressed including covering steel plate 10,
Grout nipple 30, elastic sealing strip 40 overlay fastener 50 and press seal fastener 60;
The pressure tuyere 20 is set to 10 centre of covering steel plate with grout nipple 30;
The press seal fastener 60 is set to the surrounding edge of the covering steel plate 10;
The elastic sealing strip 40 is pasted onto the surrounding of covering steel plate 10, close to 60 inside of press seal fastener;
The fastener 50 that overlays is evenly arranged on the intermediate position of the covering steel plate 10;
The covering steel plate 10 overlays fastener 50 described in and overlays in concrete water-permeating face, the covering steel plate 10 4
The elastic sealing strip 40 that week pastes is by 60 press seal of press seal fastener on concrete surface.
Wherein, covering steel plate 10 is the high-strength elastic steel plate that thickness is less than 3mm, and preferred thickness is the stainless of 1.5~2.0mm
Steel spring steel plate is provided on covering steel plate 10 described in installation and overlays the eyelet of fastener 50 Yu press seal fastener 60, wherein using
Make to install in the eyelet actual installation of the press seal fastener 60 and only have Partial cells that expansion bolt is installed, other eyelets are spare
Eyelet is used as and carries out local strengthening press seal when local blow-by occurs in covering steel plate covering effect.
The width of elastic sealing strip 40 be not less than 5mm, thickness be not less than 2mm, 40 preferable width of elastic sealing strip be 8~
10mm, with a thickness of the TPE elastic sealing strip of 3~5mm.
It is connected as shown in Fig. 2, the pressure tuyere 20 is hollow with the 10 covering cavity of covering steel plate, the pressure tuyere 20
Including the pressure tuyere seat 230, pressure tuyere check-valves 220 and pressure wind connection mouth 210 being sequentially connected, 230 pedestal of pressure tuyere seat
Face is aligned with covering steel plate 10 is connected to the eyelet welded connecting that covering cavity is opened.
It is connected as shown in figure 3, the grout nipple 30 is hollow with the 10 covering cavity of covering steel plate, the grout nipple 30
Including grout nipple seat 350, pressure gauge 340, pressure meter three-way 360, the drainage valve 330, gate valve threeway 370, filling being sequentially connected
Check-valves 320 and grouting connection mouth 310 are starched, 350 seating plane of grout nipple seat is aligned with covering steel plate 10 is connected to covering sky
The eyelet that chamber is opened is welded to connect.
The diagrammatic cross-section of fastener 50 is overlayed as shown in figure 4, overlaying fastener 50 includes overlaying expansion bolt in Fig. 4
510, it overlays gasket 520 and overlays cushion rubber 530, the screw thread specification for overlaying expansion bolt 510 is not less than M6mm, nominal length
Not less than 80mm.
For the diagrammatic cross-section of press seal fastener 60 as shown in figure 5, in Fig. 5, press seal fastener 60 includes press seal expansion bolt
610 and press seal gasket 620, the screw thread specification of the press seal expanding screw 610 is not less than 80mm not less than M6mm, nominal length.
In above-mentioned concrete water-permeating processing covering back-pressure provisions for grouting, the size and shape of covering steel plate 10 can be according to infiltration
The size of the water surface is designed processing, and the processing of covering steel plate 10 is usually square standard component in practical application, square
Design considers convenient for joint closing when overlapping between more than one piece covering steel plate, as shown in Figure 6.
Embodiment 2
Present embodiments provide the method that concrete water-permeating processing covering back-pressure provisions for grouting carries out back-pressure grouting, step packet
It includes:
S1 carries out covering steel plate 10 and processes, and welding pressure tuyere 20 and grout nipple 30 paste elastic sealing strip 40, form covering
Steel plate component, and to covering steel plate component and one layer of remover of concrete binding face coating;
The cleaning of S2 concrete water-permeating face and mark carry out covering back-pressure provisions for grouting according to concrete water-permeating surface treatment range
Combine layout design;
S3 successively installs every covering steel plate component according to following process:
It requires overlay fastener 50 according to arrangement and press seal fastener 60 installs eyelet drilling, then expanding screw is installed
Bolt, then covering steel plate component is installed, expansion bolt nut, which is finally tightened, by covering steel plate component is sealed on concrete surface;
S4, to pressure wind supervisor, is owned using pressure all pressure tuyeres 20 of wind sebific duct parallel communication using grouting rubber pipe parallel communication
Grout nipple 30 to mud jacking is responsible for;
S5 closes drainage valve 330, by pressure wind supervisor directly to covering infiltration face pressure wind inspection and confirmation covering back-pressure
After provisions for grouting combines covering effect, stop pressure 340 seepage pressure value of wind observed pressure table;.
S6 opens drainage valve 330, while by pressure wind supervisor to concrete water-permeating face pressure wind, to 330 row of drainage valve
Out when net wind, all drainage valves 330 are closed one by one, are controlled according to the effective wind pressure set after seepage pressure is subtracted to infiltration face
Carry out pressure wind;
S7 is responsible for by mud jacking and Thief zone solidifying epoxy slurry fastly is perfused to concrete water-permeating face back-pressure, and grouting injection rate is preferably pressed
According to be less than 0.1L/min controlled, until grouting pressure reach subtract seepage pressure after set effective pressure when, control pressure
Power is constant to continue screen slurry 30min or more, stops mixing pressure wind and mud jacking;
All combined flue pipes of S8 removal grouting and slurry are managed, and epoxy grouting pipeline and equipment are cleaned;
S9 twists off all expansion bolt nuts after solidifying 60min or more, removes covering back-pressure provisions for grouting assembly, and cutting is outer
The dilating screw of leakage roots out the grouting epoxy of evagination gel, and to treated, concrete water-permeating face is modified.
Claims (9)
1. a kind of concrete water-permeating handles covering back-pressure provisions for grouting, which is characterized in that including covering steel plate (10), press tuyere
(20), grout nipple (30), elastic sealing strip (40) overlay fastener (50) and press seal fastener (60);
The pressure tuyere (20) and grout nipple (30) are set to covering steel plate (10) centre;
The elastic sealing strip (40) is pasted onto the surrounding of covering steel plate (10), on the inside of the press seal fastener (60);
The fastener (50) that overlays is evenly arranged on the intermediate position of the covering steel plate (10);
The press seal fastener (60) is set to the surrounding edge of the covering steel plate (10);
The covering steel plate (10) overlays fastener (50) described in and overlays in concrete water-permeating face, the covering steel plate (10)
The elastic sealing strip (40) that surrounding is pasted is by press seal fastener (60) press seal on concrete surface.
2. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that described outer
Envelope steel plate (10) is the high-strength elastic steel plate that thickness is less than 3mm.
3. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that described outer
The first eyelet that fastener (50) Yu press seal fastener (60) are overlayed described in installation, the covering steel are provided in envelope steel plate (10)
Plate (10) is additionally provided with the second eyelet being connected to grout nipple (30) with covering cavity for pressure tuyere (20).
4. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that the bullet
Property sealing strip (40) width be not less than 5mm, thickness be not less than 2mm.
5. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that the pressure
Tuyere (20) is hollow to be connected with covering steel plate (10) the covering cavity, and pressure tuyere (20) includes the pressure wind being sequentially connected
Mouth seat (230), pressure tuyere check-valves (220) and pressure wind connection mouth (210), pressure tuyere seat (230) seating plane and covering steel
Plate (10) alignment is connected to the eyelet that covering cavity is opened and is welded to connect.
6. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that the filling
Mouth (30) are hollow is connected with covering steel plate (10) the covering cavity for slurry, and the grout nipple (30) includes the grouting being sequentially connected
Mouth seat (350), pressure gauge (340), pressure meter three-way (360), drainage valve (330), gate valve threeway (370), grouting check-valves
(320) it and is in the milk connection mouth (310), grout nipple seat (350) seating plane is aligned with covering steel plate (10) is connected to covering sky
The eyelet that chamber is opened is welded to connect.
7. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that the pressure
Being adjacent to firmware (50) includes overlaying expansion bolt (510), overlaying gasket (520) and overlay cushion rubber (530), described to overlay expanding screw
The screw thread specification of bolt (510) is not less than 80mm not less than M6mm, nominal length.
8. a kind of concrete water-permeating according to claim 1 handles covering back-pressure provisions for grouting, which is characterized in that the pressure
Being tamping firmware (60) includes press seal expansion bolt (610) and press seal gasket (620), the screw thread of the press seal expansion bolt (610)
Specification is not less than 80mm not less than M6mm, nominal length.
9. it is anti-that a kind of concrete water-permeating processing covering back-pressure provisions for grouting of any one according to claim 1~8 carries out covering
The method for pressing grouting, which is characterized in that step includes:
S1 carries out the processing of covering steel plate, welding pressure tuyere and grout nipple, pastes elastic sealing strip, forms covering steel plate component, and
To covering steel plate component and one layer of remover of concrete binding face coating;
The cleaning of S2 concrete water-permeating face and mark carry out the combination of covering back-pressure provisions for grouting according to concrete water-permeating surface treatment range
Layout design;
S3 successively installs every covering steel plate component according to following process:
It requires overlay fastener according to arrangement and press seal fastener receptacles eye drills, then expansion bolt is installed, then pacify
Covering steel plate component is filled, expansion bolt nut is finally tightened by covering steel plate component and is sealed on concrete surface;
S4 is using pressure all pressure tuyeres of wind sebific duct parallel communication extremely pressure wind air duct, using all grouting of grouting rubber pipe parallel communication
Mouth is to the flow inlet that is in the milk;
S5 closes drainage valve, by pressure wind supervisor directly to covering infiltration face pressure wind inspection and confirmation covering back-pressure provisions for grouting
After combining covering effect, stop pressure wind observed pressure table seepage pressure value;
S6 opens drainage valve, while by pressure wind air duct to concrete water-permeating face pressure wind, when net wind is discharged in drainage valve,
All drainage valves are closed one by one, and pressure wind is carried out to infiltration face according to the effective wind pressure control set after seepage pressure is subtracted;
S7 by grouting flow inlet to concrete water-permeating face back-pressure be perfused Thief zone fastly coagulate epoxy slurry, grouting injection rate preferably according to
Controlled less than 0.1L/min, until grouting pressure reach subtract seepage pressure after set effective pressure when, control pressure
It is constant to continue screen slurry 30min or more, stop mixing pressure wind and grouting;
All combined flue pipes of S8 removal grouting and slurry are managed, and epoxy grouting pipeline and equipment are cleaned;
S9 twists off all expansion bolt nuts after solidifying 60min or more, removes covering back-pressure provisions for grouting assembly, cuts leakage
Dilating screw roots out the grouting epoxy of evagination gel, and to treated, concrete water-permeating face is modified.
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CN201910540672.4A CN110258569B (en) | 2019-06-21 | 2019-06-21 | Concrete water seepage treatment external sealing back pressure grouting device and grouting method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112049233A (en) * | 2020-08-20 | 2020-12-08 | 韶关市新城兴建筑工程有限公司 | Basement terrace seepage water repairing method |
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US20160326759A1 (en) * | 2015-05-08 | 2016-11-10 | John Huh | Restorative waterproofing membrane and method of forming the same |
CN210288398U (en) * | 2019-06-21 | 2020-04-10 | 长沙普照生化科技有限公司 | Concrete infiltration is handled outer back pressure cementer that seals |
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JP2004251007A (en) * | 2003-02-20 | 2004-09-09 | Shimizu Corp | High-pressure injection water cutoff method and water cutoff material for use in the same |
CN103161166A (en) * | 2013-03-13 | 2013-06-19 | 长江三峡通航管理局 | Wind-guiding chemical grouting device and grouting method of the same |
CN104088254A (en) * | 2014-07-11 | 2014-10-08 | 泛华建设集团有限公司 | Leakage repairing device for pressure-bearing reinforced concrete structure and construction method thereof |
US20160326759A1 (en) * | 2015-05-08 | 2016-11-10 | John Huh | Restorative waterproofing membrane and method of forming the same |
CN210288398U (en) * | 2019-06-21 | 2020-04-10 | 长沙普照生化科技有限公司 | Concrete infiltration is handled outer back pressure cementer that seals |
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CN112049233A (en) * | 2020-08-20 | 2020-12-08 | 韶关市新城兴建筑工程有限公司 | Basement terrace seepage water repairing method |
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