CN102605795B - Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve - Google Patents
Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve Download PDFInfo
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- CN102605795B CN102605795B CN201210099027.1A CN201210099027A CN102605795B CN 102605795 B CN102605795 B CN 102605795B CN 201210099027 A CN201210099027 A CN 201210099027A CN 102605795 B CN102605795 B CN 102605795B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 15
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 12
- 239000012945 sealing adhesive Substances 0.000 claims description 37
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 239000002390 adhesive tape Substances 0.000 abstract 3
- 238000007789 sealing Methods 0.000 description 6
- 239000011152 fibreglass Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Disclosed are a waterproof sleeve for repairing a concrete surface of a water table fluctuation region and an application method of the waterproof sleeve. The sleeve comprises a sleeve body with openings at the upper end and the lower end, and the bottom end of the sleeve body is lower than the lowest position of a portion to be repaired; water-swelling water-stopping adhesive tapes are respectively arranged between the inner wall of the top of the sleeve body and the outer surface of a structure and between the inner wall of the bottom of the sleeve body and outer surface of the structure, and are respectively embedded in a groove on the inner wall of the sleeve body; a cavity is arranged between the inner wall of the sleeve body and the outer surface of the structure and repairing mortar is injected into the cavity; the cavity is located between the upper and lower water-swelling water-stopping adhesive tapes; a grouting tube is arranged on the sleeve body; a ventilating tube is arranged at the top of the sleeve body, a water drainage tube is arranged at the bottom of the sleeve body, and both the ventilating tube and the water drainage tube are communicated with the cavity; valves are respectively arranged on the ventilating tube and the water drainage tube; and at least two separating bodies are hermetically abutted to form the sleeve body and are connected at abutting joints via corrosion-resistant bolts, joints are longitudinal joints, and the water-swelling water-stopping adhesive tapes are clamped in the longitudinal joints. Construction is simple and convenient, seaborne operation quantity and preparation and ending quantity of non-repair operation are low, and the sleeve can be used as an auxiliary facility with structural durability.
Description
Technical field
The present invention relates to device and application process for a kind of fluctuation of water table district concrete surface defect repair, specifically water barrier device and application process thereof for a kind of reparation.
Background technology
The concrete Service Environment in fluctuation of water table district is the most severe, destroy also the most serious, the early stage works defect occurring is economical owing to lacking, practical, the restorative procedure of convenient operation and always not repairing in time, when steel-bar corrosion or structure section dwindle and have influence on structural safety, conventionally adopt steel cofferdam method, effect is to be repaired anhydrous construction environment is provided for works surface by cofferdam side plate and bottom concrete, the method needs machined steel cofferdam first on the bank, with large ship, be transported to job site, large-scale floating crane is installed, hydraulic test sinks in place, suspension rod anchoring is set, bottom concrete under water after cast 1～2m, after concrete reaches some strength, extract the ponding of inside, cofferdam out, then carry out repairing construction, after reparation completes, remove steel cofferdam.The method construction period is long, and operation at sea amount is large, and material usage is large, and required plant equipment is many, preprosthetic preparation and repair after round-off work to account for the ratio of repair great.
Summary of the invention
The shortcoming existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of preparation and ending of constructing simple, convenient, operation on the sea amount and non-repair to measure little fluctuation of water table district concrete surface reparation water proof sleeve, this water proof sleeve comprises cylindrical shell, the both ends open up and down of described cylindrical shell; The height of cylindrical shell bottom is lower than the height of position to be repaired lowest part on concrete structure;
Between the inwall at cylindrical shell top and concrete structure external surface, be provided with the upper water-swellable sealing adhesive tape of sealing use; Between the inwall of cylinder body bottom and concrete structure external surface, be also provided with the lower water-swellable sealing adhesive tape of sealing use; Described water-swellable sealing adhesive tape is inlaid in the groove of cylinder inboard wall;
Between cylinder inboard wall and concrete structure external surface, be made as for injecting the cavity of repairing mortar; Described cavity is between upper water-swellable sealing adhesive tape, lower water-swellable sealing adhesive tape; Cylindrical shell is provided with Grouting Pipe, and cylindrical shell top is provided with ventilating pipe, and cylinder body bottom is provided with gutter, and described Grouting Pipe, ventilating pipe, gutter are all communicated with described cavity; And valve is set respectively on Grouting Pipe, ventilating pipe, gutter;
Described cylindrical shell is docked and is connected with corrosion-resistant bolt at joint by least two split edge seals, and the seam of joint is longitudinal seam, and longitudinal seam place clamps the water-swellable sealing adhesive tape of sealing use.
Preferred: described cylindrical shell is fixedly formed by two split docking.
Preferred: described Grouting Pipe, gutter are positioned at the middle part in the same side of cylindrical shell and short transverse that Grouting Pipe is positioned at cylindrical shell; Described ventilating pipe is positioned at and Grouting Pipe, opposite side that gutter is relative.
Preferred: the air inlet port of described ventilating pipe in described cavity straight up; The water inlet of described gutter in described cavity straight down; The grout outlet of described Grouting Pipe in described cavity straight down.
Preferred: the upper limb 2 ~ 5mm of the described cavity of air inlet port distance of described ventilating pipe; Lower edge 2 ~ the 5mm of the described cavity of water inlet distance of described gutter.
Preferred: described cylindrical shell is made by glass-reinforced plastic material or RPC material or ECC material.
The present invention also provides the application process of fluctuation of water table district concrete surface reparation with water proof sleeve, and it comprises the steps:
1) sleeve is prefabricated: the shape and size of repairing position according to concrete structure are prepared water proof sleeve; Water proof sleeve is transported to scene;
2) preparation of sleeve before installing: in advance the water-swellable sealing adhesive tape of described upper water-swellable sealing adhesive tape, lower water-swellable sealing adhesive tape and described split joint is arranged on cylindrical shell; And check ventilating pipe, gutter and Grouting Pipe, guarantee unobstructed; Cleaning concrete structure position to be repaired loose part and with described upper water-swellable sealing adhesive tape, the foreign material of lower water-swellable sealing adhesive tape correspondence position;
3) sleeve handling and installation: the water proof sleeve preparing is transported to behind scene, lift by crane and transfer to the precalculated position at concrete structure place with hoist engine, at concrete structure end face, fixed support is set for the interim water proof sleeve that hangs; The corrosion-resistant bolton of the split joint of cylindrical shell will be formed;
4) sleeve cavity draining: water proof sleeve is installed after 24h, connects respectively two suction pumps by described gutter and described Grouting Pipe and carries out draining, now guarantees being communicated with of described ventilating pipe and ambient atmosphere;
5) sleeve cavity leakage check: when the anhydrous discharge of gutter, ventilating pipe and air pump are connected, by air pump, in cavity, be pressed into air, whether when in air pressure inside reaches the water of cavity bottom air pressure and the corresponding water level of cavity bottom, pressure equates, observing water proof perimeter of sleeve and be joint between water proof sleeve and concrete structure and between the split of cylindrical shell has bubble to overflow;
6) sleeve cavity slip casting:
If water proof perimeter of sleeve is overflowed without bubble in step 5), close air pump and keep ventilating pipe to be communicated with ambient atmosphere, by grouting pump, to cavity, be pressed into repairing mortar until be full of whole cavity completely;
If water proof perimeter of sleeve has bubble to overflow, by air pump, ventilating pipe, in cavity, be pressed into gas, by grouting pump, Grouting Pipe, to cavity, be pressed into repairing mortar until be full of whole void space completely simultaneously; Then close the valve of ventilating pipe, gutter, Grouting Pipe;
7) slip casting post processing: when mortar to be repaired reaches design performance, the part of ventilating pipe, gutter, Grouting Pipe being exposed to cylindrical shell polishes off.
Preferred: in step 3), the position for water-swellable sealing adhesive tape, lower water-swellable sealing adhesive tape on setting-in on cylindrical shell is fixed with steel strip ring hoop, to guarantee combining closely of cylindrical shell and concrete structure.
Scheme further: uniform on described steel strip ring hoop a plurality of precession bolts are set.
The invention has the beneficial effects as follows: this kind of sleeve adopts prefabrication, on-the-spot installation, installation is simple, convenient; Can reduce operation on the sea amount, reduce preparation and the ending amount of non-repair, shorten the repair cycle, reduce and repair consumable quantity and rehabilitation cost; In addition after having repaired, needn't remove sleeve, sleeve can be used as the ancillary method of structure durability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the I-I cross-sectional view of Fig. 1;
In figure: 1 concrete structure external surface, water-swellable sealing adhesive tape on 2,3 ventilating pipes, 4 gutters, 5 Grouting Pipe, 6 cylindrical shells, 61 first splits, 62 second splits, 7 water-swellable sealing adhesive tape, 8 corrosion-resistant bolts, 9 concrete structures, 10 cavitys, 11 times water-swellable sealing adhesive tape, 12 steel strip ring hoops.
The specific embodiment
The concrete surface reparation of ，Gai fluctuation of water table district mainly comprises cylindrical shell 6 with water proof sleeve as shown in Figure 1, the both ends open up and down of described cylindrical shell 6; The height of cylindrical shell 6 bottoms is lower than the height of position to be repaired lowest part on concrete structure 9.Cylindrical shell 6 adopts that glass fiber reinforced plastic, RPC, ECC equal strength are high, good toughness and corrosion-resistant material are made.
As shown in Figure 2, this cylindrical shell 6 is formed by the docking of two splits (i.e. the first split 61, the second split 62) edge seal, and connect with corrosion-resistant bolt 8 at joint, the seam of joint is longitudinal seam, and longitudinal seam place clamps the water-swellable sealing adhesive tape 7 of sealing use.This cylindrical shell 6 adopts that glass fiber reinforced plastic, RPC, ECC equal strength are high, good toughness and corrosion-resistant material are made.
Between the inwall at cylindrical shell 6 tops and concrete structure external surface 1, be provided with the upper water-swellable sealing adhesive tape 2 of sealing use.Between the inwall of cylindrical shell 6 bottoms and concrete structure external surface 1, be also provided with the lower water-swellable sealing adhesive tape 11 of sealing use.Upper water-swellable sealing adhesive tape 2, lower water-swellable sealing adhesive tape 11 are inlaid in respectively in the groove of cylinder inboard wall.
Between cylindrical shell 6 inwalls and concrete structure external surface 1, be made as for injecting the cavity 10 of repairing mortar.Cavity 10 is between upper water-swellable sealing adhesive tape 2, lower water-swellable sealing adhesive tape 11.
Cylindrical shell 6 is provided with Grouting Pipe 5, and cylindrical shell 6 tops are provided with ventilating pipe 3, and cylindrical shell 6 bottoms are provided with gutter 4.Grouting Pipe 5, ventilating pipe 3, gutter 4 are all communicated with cavity 10; And on Grouting Pipe 5, ventilating pipe 3, gutter 4, valve is set respectively.
In addition, Grouting Pipe 5, gutter 4 are positioned at the middle part in the same side of cylindrical shell 6 and short transverse that Grouting Pipe 5 is positioned at cylindrical shell 6.Ventilating pipe 3 is positioned at and Grouting Pipe 5, opposite side that gutter 4 is relative.When ventilation or injection repairing mortar, can avoid a gas or mortar side flow at concrete structure, thereby guarantee that repairing mortar is full of whole cavity.
According to the different qualities of gas, water, the air inlet port of described ventilating pipe 3 in cavity 10 straight up; The water inlet of gutter 4 in cavity 10 straight down; The grout outlet of Grouting Pipe 5 in cavity 10 straight down.
And preferred: the distance between the air inlet port of ventilating pipe 3 and the upper limb of cavity 10 is 2 ~ 5mm.Distance between the lower edge of the water inlet of gutter 4 and cavity 10 is 2 ~ 5mm, and draining is more thorough.
The application process of water proof sleeve for this fluctuation of water table district concrete surface reparation, it comprises the steps:
1) sleeve is prefabricated: the shape and size of repairing position according to concrete structure 9 are prepared water proof sleeve, described cylindrical shell 6 adopts that intensity are high, good toughness and corrosion-resistant material preparation, and as adopted, glass fiber reinforced plastic, RPC, ECC equal strength are high, good toughness and corrosion-resistant material are made; Water proof sleeve is transported to scene;
2) preparation before sleeve installation: in advance the water-swellable sealing adhesive tape 7 of described upper water-swellable sealing adhesive tape 2, lower water-swellable sealing adhesive tape 11 and the first split the 61, the 2 62 joint is arranged on cylindrical shell; And check ventilating pipe 3, gutter 4 and Grouting Pipe 5, guarantee unobstructed; The loose part at cleaning concrete structure 9 positions to be repaired and with the foreign material of upper water-swellable sealing adhesive tape 2, lower water-swellable sealing adhesive tape 11 correspondence positions;
3) sleeve handling and installation: the water proof sleeve preparing is transported to behind scene, lift by crane and transfer to the precalculated position at concrete structure 9 places with hoist engine, at concrete structure 9 end faces, fixed support is set for the interim water proof sleeve that hangs; To form the first split 61 of cylindrical shell, the corrosion-resistant bolt 8 of the second split 62 joints is fastening;
In this step, the position for water-swellable sealing adhesive tape 2, lower water-swellable sealing adhesive tape 11 on setting-in on cylindrical shell can be fixed with steel strip ring hoop 12, to guarantee combining closely of cylindrical shell 6 and concrete structure 9; Uniform on steel strip ring hoop a plurality of precession bolts are set, can further guarantee the closely sealed of cylindrical shell and concrete structure;
4) sleeve cavity draining: water proof sleeve is installed after 24h, connects respectively two suction pumps by gutter 4 and Grouting Pipe 5 and carries out draining, now guarantees being communicated with of ventilating pipe 3 and ambient atmosphere;
5) sleeve cavity leakage check: when the anhydrous discharge of gutter 4, ventilating pipe 3 and air pump are connected, by air pump, in cavity, be pressed into air, when in air pressure inside reaches the water of cavity 10 bottom air pressure and the cavity 10 corresponding water levels in bottom, pressure equates, to observe water proof perimeter of sleeve be between water proof sleeve and concrete structure 9 and the first split 61 of cylindrical shell, the second split 62 between joint whether have bubble effusion;
6) sleeve cavity slip casting:
If water proof perimeter of sleeve is overflowed without bubble in step 5), close air pump and keep ventilating pipe 3 to be communicated with ambient atmosphere, by grouting pump 5, to cavity 10, be pressed into repairing mortar until be full of whole cavity 10 completely;
If water proof perimeter of sleeve has bubble to overflow, by air pump, ventilating pipe 3, in cavity 10, be pressed into gas, by grouting pump, Grouting Pipe 5, to cavity, be pressed into repairing mortar until be full of whole cavity 10 completely simultaneously; Then close the valve of ventilating pipe 3, gutter 4, Grouting Pipe 5;
7) slip casting post processing: when mortar to be repaired reaches design performance, the part of ventilating pipe 3, gutter 4, Grouting Pipe 5 being exposed to cylindrical shell 6 polishes off, keeps monnolithic case smoother.
Claims (3)
1. the application process of water proof sleeve for the concrete surface reparation of fluctuation of water table district, is characterized in that: comprise the steps:
1) sleeve is prefabricated: the shape and size of repairing position according to concrete structure are prepared water proof sleeve; Water proof sleeve is transported to scene;
2) preparation before sleeve installation: in advance the water-swellable sealing adhesive tape of upper water-swellable sealing adhesive tape, lower water-swellable sealing adhesive tape and split joint is arranged on cylindrical shell; And check ventilating pipe, gutter and Grouting Pipe, guarantee unobstructed; Cleaning concrete structure position to be repaired loose part and with described upper water-swellable sealing adhesive tape, the foreign material of lower water-swellable sealing adhesive tape correspondence position;
3) sleeve handling and installation: the water proof sleeve preparing is transported to behind scene, lift by crane and transfer to the precalculated position at concrete structure place with hoist engine, at concrete structure end face, fixed support is set for the interim water proof sleeve that hangs; The corrosion-resistant bolton of the split joint of cylindrical shell will be formed;
4) sleeve cavity draining: water proof sleeve is installed after 24h, connects respectively two suction pumps by gutter and Grouting Pipe and carries out draining, now guarantees being communicated with of ventilating pipe and ambient atmosphere;
5) sleeve cavity leakage check: when the anhydrous discharge of gutter, ventilating pipe and air pump are connected, by air pump, in cavity, be pressed into air, whether when in air pressure inside reaches the water of cavity bottom air pressure and the corresponding water level of cavity bottom, pressure equates, observing water proof perimeter of sleeve and be joint between water proof sleeve and concrete structure and between the split of cylindrical shell has bubble to overflow;
6) sleeve cavity slip casting:
If water proof perimeter of sleeve is overflowed without bubble in step 5), close air pump and keep ventilating pipe to be communicated with ambient atmosphere, by grouting pump, to cavity, be pressed into repairing mortar until be full of whole cavity completely;
If water proof perimeter of sleeve has bubble to overflow, by air pump, ventilating pipe, in cavity, be pressed into gas, by grouting pump, Grouting Pipe, to cavity, be pressed into repairing mortar until be full of whole void space completely simultaneously; Then close the valve of ventilating pipe, gutter, Grouting Pipe;
7) slip casting post processing: when mortar to be repaired reaches design performance, the part of ventilating pipe, gutter, Grouting Pipe being exposed to cylindrical shell polishes off.
2. the application process of water proof sleeve for the concrete surface reparation of fluctuation of water table according to claim 1 district, is characterized in that:
In step 3), the position for water-swellable sealing adhesive tape, lower water-swellable sealing adhesive tape on setting-in on cylindrical shell is fixed with steel strip ring hoop, to guarantee combining closely of cylindrical shell and concrete structure.
3. the application process of water proof sleeve for the concrete surface reparation of fluctuation of water table according to claim 2 district, is characterized in that: uniform on described steel strip ring hoop a plurality of precession bolts are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099027.1A CN102605795B (en) | 2012-04-06 | 2012-04-06 | Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099027.1A CN102605795B (en) | 2012-04-06 | 2012-04-06 | Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN102605795A CN102605795A (en) | 2012-07-25 |
| CN102605795B true CN102605795B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210099027.1A Active CN102605795B (en) | 2012-04-06 | 2012-04-06 | Waterproof sleeve for repairing concrete surface of water table fluctuation region and application method of waterproof sleeve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669415A (en) * | 2012-08-29 | 2014-03-26 | 颜可仁 | Method for water stop construction at junction between preformed hole of prefabricated pile cap and pile foundation |
| CN107354876B (en) * | 2017-07-25 | 2023-02-24 | 苏交科集团股份有限公司 | Underwater pier column reinforcing steel bar rust removal and concrete surface repair device |
| CN112147054B (en) * | 2020-09-25 | 2023-02-28 | 青岛路桥建设集团有限公司 | Rapid test method for matrix communication porosity of semi-flexible pavement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779465A1 (en) * | 1995-12-14 | 1997-06-18 | British Gas plc | Pipe repair clamp |
| US6773206B2 (en) * | 2000-09-07 | 2004-08-10 | Michael S. Bradley | Support pile repair jacket form |
| US7300229B1 (en) * | 2005-11-18 | 2007-11-27 | Fyfe Edward R | Repair jacket for pilings and method |
| CN202543940U (en) * | 2012-04-06 | 2012-11-21 | 山东高速青岛公路有限公司 | Waterproof sleeve for repairing surface of concrete in water level variation area |
-
2012
- 2012-04-06 CN CN201210099027.1A patent/CN102605795B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779465A1 (en) * | 1995-12-14 | 1997-06-18 | British Gas plc | Pipe repair clamp |
| US6773206B2 (en) * | 2000-09-07 | 2004-08-10 | Michael S. Bradley | Support pile repair jacket form |
| US7300229B1 (en) * | 2005-11-18 | 2007-11-27 | Fyfe Edward R | Repair jacket for pilings and method |
| CN202543940U (en) * | 2012-04-06 | 2012-11-21 | 山东高速青岛公路有限公司 | Waterproof sleeve for repairing surface of concrete in water level variation area |
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| CN102605795A (en) | 2012-07-25 |
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Owner name: WEST ZHONGDA CONSTRUCTION GROUP CO., LTD. QINGDAO Free format text: FORMER OWNER: QINGDAO LOAD + BRIDGE CONSTRUCTION GROUP CO., LTD. ZIBO HAIGONG BUILDING REMEDYING MATERIAL CO., LTD. Effective date: 20140106 |
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Inventor after: Guo Baolin Inventor after: Ji Hui Inventor after: Shao Xinpeng Inventor after: Yu Changhe Inventor after: Yin Li Inventor after: Yan Peiwu Inventor after: Xue Mingxing Inventor before: Guo Baolin Inventor before: Ji Hui Inventor before: Shao Xinpeng Inventor before: Yu Changhe Inventor before: Yin Li |
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Free format text: CORRECT: INVENTOR; FROM: GUO BAOLIN JI HUI SHAO XINPENG YU CHANGHE YIN LI TO: GUO BAOLIN JI HUI SHAO XINPENG YU CHANGHE YIN LI YAN PEIWU XUE MINGXING |
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Effective date of registration: 20140106 Address after: Miao road Laoshan District 266061 of Shandong Province, Qingdao City, No. 29 Applicant after: CRBC International Co., Ltd. Applicant after: XI'AN ZHONGDA CONSTRUCTION GROUP CO., LTD. Applicant after: Qingdao Road and Bridge Construction Group Co., Ltd. Applicant after: Zibo Haigong Building Remedying Material Co., Ltd. Address before: Miao road Laoshan District 266061 of Shandong Province, Qingdao City, No. 29 Applicant before: CRBC International Co., Ltd. Applicant before: Qingdao Road and Bridge Construction Group Co., Ltd. Applicant before: Zibo Haigong Building Remedying Material Co., Ltd. |
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Effective date of registration: 20170306 Address after: Miao road Laoshan District 266061 of Shandong Province, Qingdao City, No. 29 Patentee after: CRBC International Co., Ltd. Patentee after: West China Construction Group Limited by Share Ltd Patentee after: Qingdao Road and Bridge Construction Group Co., Ltd. Patentee after: Zibo Haigong Building Remedying Material Co., Ltd. Address before: Miao road Laoshan District 266061 of Shandong Province, Qingdao City, No. 29 Patentee before: CRBC International Co., Ltd. Patentee before: XI'AN ZHONGDA CONSTRUCTION GROUP CO., LTD. Patentee before: Qingdao Road and Bridge Construction Group Co., Ltd. Patentee before: Zibo Haigong Building Remedying Material Co., Ltd. |
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