CN115467549A - Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting - Google Patents
Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting Download PDFInfo
- Publication number
- CN115467549A CN115467549A CN202211109958.5A CN202211109958A CN115467549A CN 115467549 A CN115467549 A CN 115467549A CN 202211109958 A CN202211109958 A CN 202211109958A CN 115467549 A CN115467549 A CN 115467549A
- Authority
- CN
- China
- Prior art keywords
- wall
- hole
- water
- grouting
- needle head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000004080 punching Methods 0.000 claims abstract description 19
- 230000035515 penetration Effects 0.000 claims abstract description 3
- 230000006378 damage Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- -1 acrylic ester Chemical class 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The application discloses a method for repairing a deep foundation pit basement exterior wall curtain by combining shallow grouting. The method comprises the following steps: A. punching the outer wall with penetration until the outer wall is communicated to form a first hole; B. installing a water stopping needle head into the first hole, and grouting into the first hole through the water stopping needle head; C. determining a crack when the outer wall subjected to grouting in the step B is detected to have water seepage; D. punching the periphery of the crack until the outer wall is not communicated to form a second hole; E. and installing a water stopping needle head in the second hole, and grouting into the second hole through the water stopping needle head. In the technical scheme, the method is mainly used for treating the outer wall when the water seepage amount is large, the mode of combining the two is adopted, the plugging effect is obvious, the permeation of underground water into the outer wall can be effectively improved, the integral impermeability of the outer wall is improved, the water permeation is avoided, and meanwhile, the damage and pollution to the outer wall can be reduced.
Description
Technical Field
The application relates to the technical field of outer wall leakage stoppage construction, in particular to a repairing method combining deep foundation pit basement outer wall curtain with shallow grouting.
Background
At present, the leakage of the outer wall of a building is very common in the existing high-rise building, the water seepage treatment of the outer wall of a basement is still a difficult problem, and the leakage of the outer wall is not a serious problem, but causes great trouble to projects which want to create excellent and increases the cost. Along with the development of building technology, various plugging processes are advanced.
In the related art, the maintenance of water leakage generally adopts shallow or deep grouting technology, which mainly functions to fill the pores and cracks existing in the concrete of the outer wall, so that the underground water is blocked. However, the dependency on the craftsman is strong, and it cannot be effectively ensured that the crack and the pore at each position of the outer wall are filled compactly, that is, the leakage prevention for a long time cannot be ensured.
Therefore, the traditional method has the defects or cannot meet the construction requirement, and the leakage stoppage construction field of the basement outer wall is a difficult problem to be solved urgently.
Disclosure of Invention
In view of this, the application provides a deep foundation pit basement outer wall curtain and shallow layer grouting combined repairing method, and the leaking stoppage effect of the outer wall is improved.
The application provides a method for repairing a deep foundation pit basement exterior wall curtain by combining shallow grouting, which comprises the following steps:
A. punching the outer wall with penetration until the outer wall is communicated to form a first hole;
B. installing a water stopping needle head into the first hole, and grouting into the first hole through the water stopping needle head;
C. when the outer wall subjected to grouting in the step B is detected to have water seepage, determining cracks;
D. punching the periphery of the crack until the outer wall is not communicated to form a second hole;
E. and installing a water stopping needle head in the second hole, and grouting into the second hole through the water stopping needle head.
Optionally, in step a, the punching is a quincuncial pile type punching, and the punching direction is perpendicular to the punching surface.
Optionally, in step a, the pitch of the first holes is 2-3m.
Optionally, in the step B, the length of the water stopping needle head is 30-70 cm.
Optionally, in step D, the hole is a quincuncial pile hole, and the hole is inclined 45 degrees to the hole surface.
Optionally, in step D, the depth of the perforation is 10 to 20cm, the pitch of the perforation is 10 to 20cm, and the distance between the second hole and the crack is 3 to 5cm.
Optionally, after step E, further comprising: and D, detecting whether the outer wall is seeped or not, and sequentially implementing grouting in the step D and the step E if the outer wall is seeped.
Optionally, after step B, the method further includes: and C, stopping implementing the step C when detecting that the outer wall subjected to grouting in the step B has no water seepage.
Optionally, after step E, further comprising: when detecting that the outer wall does not ooze water, wait to clear away behind the stagnant water syringe needle that corresponds first hole, second hole, carry out the shutoff to first hole, second hole.
The repairing method combining curtain grouting (namely first hole grouting) of the outer wall of the basement of the deep foundation pit with shallow layer grouting is mainly used for a treatment mode when the water seepage amount of the outer wall is large, and the mode combining the curtain grouting and the shallow layer grouting has a remarkable leaking stoppage effect, can effectively improve the permeation of underground water into the outer wall, improves the integral impermeability of the outer wall, avoids the permeation of water, and can reduce the damage and pollution to the outer wall.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a viewing angle of curtain grouting according to an embodiment of the present application.
FIG. 2 is a schematic structural diagram of another view angle of curtain grouting according to an embodiment of the application.
Fig. 3 is a schematic structural diagram of a view angle of shallow grouting according to an embodiment of the present disclosure.
Fig. 4 is a structural diagram of another view angle of shallow grouting provided in an embodiment of the present application.
FIG. 5 is a process flow diagram of a repairing method of the basement exterior wall curtain of the deep foundation pit combined with shallow grouting according to the embodiment of the application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The operation of the correction of the present application will now be described with respect to a common application scenario. It should be noted that this common embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved as claimed in the present application, which is merely exemplary.
Referring to fig. 1-5, the repairing method of the basement exterior wall curtain of the deep foundation pit in combination with shallow grouting can be applied to the technical field of basement exterior wall leaking stoppage construction, and the process flow comprises two steps:
the first step is as follows: and (1) knowing the thickness of the wall. Firstly, the required thickness of the repaired outer wall is determined by inquiring the drawing of the required repaired outer wall, and the accuracy of later construction is ensured. And (2) punching. And finding out the outer wall with leakage, and performing quincuncial pile type punching, wherein the punching depth is the thickness of the wall body. If special conditions occur, such as the thickness of the outer wall is not clear or irregular due to unilateral formwork support and the like, a drilling machine is needed to be adopted to drill the outer wall to the pinhole to flow water out, and then the next step can be carried out; the reasons are two reasons: 1. when the pinhole does not hit the outflow water, it indicates that the part does not have the infiltration of water, and then can't carry out the slip casting effectively, fill the hole. 2. When the pinhole is not hit to the outflow water, the concrete compactness of the part is good, and the pressure of the grouting machine is not enough to spray the waterproof coating for filling. The hole distance is controlled to be 2-3M, the specific hole distance is adjusted according to the field water seepage amount, the hole distance is close if the seepage condition is serious, and the hole distance is far if the seepage condition is serious. And (3) inserting a water stopping needle. After the drilling machine drills through the outer wall, the water-stopping needle head is inserted into the needle hole, and then the next step is carried out. And (4) grouting. Firstly, waterproof paint needs to be prepared, 1 part of acrylic ester and water is prepared, and then 1 part of acrylic ester and flexible acrylate or waterborne polyurethane are prepared into a mixture ratio of 1. And after the blending is finished, injecting the waterproof coating to the upstream face of the outer wall through the needles, wherein the lengths of the water stopping needles are different from 30 to 70CM, and the length of the water stopping needle is determined according to different wall thicknesses.
If water seepage still exists after grouting of the waterproof curtain, performing a second step:
(1) And cleaning the outer wall surface layer with the water seepage position. After the water seepage point is found, removing and chiseling putty, mortar and the like at the part of the outer wall with the watermark until the concrete surface is exposed; if the outer wall is not decorated, the outer wall surface layer can be cleaned by wiping or polishing the concrete surface. And (2) searching for cracks and construction joints. The part of the waterproof curtain which is generally water seepage after grouting can be a penetrating crack or a construction joint. After the outer wall surface is chiseled clean, the crack of the seepage water is searched by observation, and the path of the crack is searched by continuously wiping the crack by adopting clean cloth. If seepage exists at the construction joint, the construction joint is also dug and chiseled clean. And (3) punching. After finding the crack and observing the crack path, the quincuncial pile type punching is carried out along the two sides of the crack or the construction joint, the punching and punching surface is inclined by 45 degrees, the punching depth is controlled to be 10-20 cm, the hole distance is also controlled to be within 10-20 cm, the hole-crack distance is 3-5 cm, the specific distance needs to be judged according to the field water seepage condition, if the water seepage amount is large, the hole can be densely punched relatively, the crack and the hole in the outer wall concrete are densely filled as far as possible, the end part of the hole is controlled to be at the edge or the middle of the crack as far as possible, and the effect of filling the crack with the waterproof coating is enhanced. The hole is prevented from being directly punched at the crack, the influence on the hole position is not filled by waterproof coating because the water stopping needle head occupies the space, and the hole position is changed into the waterproof weak point of the outer wall, so that the leakage is caused in the later stage. And (4) cleaning the holes. After the hole is punched, in order to enable the waterproof coating to better flow in the crack, an inflator or a small blower is needed to clean up dust and other impurities in the hole. And (5) inserting a water stopping needle. After the pinhole is cleaned up, the water-stopping needle head is inserted into the pinhole, and the water-stopping needle head is fixed in the hole by using a tightening device. And (6) grouting. Injecting the waterproof coating into the crack through the water-stopping needle, judging the adopted material according to the water seepage situation on site, and observing the water seepage situation of the wall body after the first grouting is finished, wherein the water-based polyurethane waterproof coating can be adopted when the water seepage quantity is small; when the water seepage amount is larger, oily polyurethane waterproof paint can be adopted; both materials are foamed and expanded when meeting water so as to fill cracks and holes, and the difference is that the oily polyurethane waterproof coating is insoluble in water, can better run along with the direction of water flow, and then better fills cracks and holes. After the first grouting is finished, the observation period is generally 2-7 days, if water seepage exists, reasons need to be found out, and the cracks or the gaps are punched again for grouting according to the needs to fill the cracks and the gaps until the compactness of the concrete of the outer wall is improved and water seepage does not occur. And (7) removing all the water stopping needle heads. After grouting is finished, filling the inner holes, the penetrating cracks, the construction joints and other positions of the concrete of the outer wall densely, and removing all the water stopping needle heads after the outer wall does not seep water any more. And (8) cleaning the holes. After the waterproof needle head adopting curtain grouting is detached, the needle hole can be cleaned up by adopting tools such as a blower, a dust collector and the like. And (9) planting the steel bars. And (4) coating bar planting glue on the end part of the steel bar, and then planting the bar planting glue into the needle hole to fill and block the needle hole. And (10) plugging pinholes and repairing an outer wall surface layer. Plugging pinholes and repairing the outer wall surface layer by adopting the plugging agent, the waterproof coating or the bar planting glue.
It should be noted that the present application makes the following obvious intelligent contributions to the related art:
1. the design of punching that adopts the plum blossom stake formula, the quantity that can furthest reduces to the at utmost covers whole outer wall, reduces the waste of material, thereby reduces the cost and to the destruction of outer wall.
2. Compared with the traditional grouting process, the design of directly punching through the wall body is adopted, and the crack of the outer wall does not need to be observed. Therefore, the dependence on technicians is reduced, the requirements on the technicians are low, and only the process flow and the materials are required to be understood.
3. Compared with the traditional grouting process, the process has the advantages that the wall surface is not required to be cleaned and chiseled for observation, the operation time is shortened, the damage to the wall body is reduced, and meanwhile, the shallow grouting can be adopted for timely reinforcing.
4. The design of the whole construction process is different from the traditional grouting process in that cracks and pores in the wall body are not filled, but filled on the upstream face of the wall body, and a waterproof wall is formed on the outer side of the wall body. The improvement of the process can not only effectively isolate underground water, but also greatly reduce the cleaning and chiseling of water seepage parts, accelerate the construction progress, effectively reduce the cost and the damage to the outer wall, and simultaneously improve the anti-permeability performance of the outer wall.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application.
Claims (9)
1. A method for repairing a deep foundation pit basement outer wall curtain by combining shallow grouting is characterized by comprising the following steps:
A. perforating the outer wall with penetration until the outer wall is communicated to form a first hole;
B. installing a water stopping needle head into the first hole, and grouting into the first hole through the water stopping needle head;
C. when the outer wall subjected to grouting in the step B is detected to have water seepage, determining cracks;
D. punching the periphery of the crack until the outer wall is not communicated to form a second hole;
E. and installing a water stopping needle head in the second hole, and grouting into the second hole through the water stopping needle head.
2. The repair method of claim 1, wherein in the step a, the hole is a quincuncial pile hole, and the hole is perpendicular to the hole surface.
3. The method according to claim 1, wherein in step a, the pitch of the first holes is 2-3m.
4. The repair method according to claim 1, wherein in the step B, the length of the water-stopping needle head is 30 to 70cm.
5. The repair method of claim 1, wherein in step D, the holes are quincuncial pile-type holes, and the direction of the holes is inclined by 45 degrees from the surface of the holes.
6. The repair method according to claim 1, wherein in the step D, the depth of the holes is 10-20 cm, the pitch of the holes is 10-20 cm, and the distance between the second holes and the crack is 3-5 cm.
7. The method according to claim 1, wherein after step E, the method further comprises: and D, detecting whether the outer wall is water-seepage or not, and sequentially implementing the grouting of the step D and the step E from beginning to end if the outer wall is water-seepage.
8. The repair method of claim 1, further comprising, after step B: and C, stopping implementing the step C when the fact that the outer wall subjected to grouting in the step B has no water seepage is detected.
9. The repair method of claim 1, further comprising, after step E: when detecting that the outer wall does not ooze water, wait to clear away behind the stagnant water syringe needle that corresponds first hole, second hole, carry out the shutoff to first hole, second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211109958.5A CN115467549A (en) | 2022-09-13 | 2022-09-13 | Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211109958.5A CN115467549A (en) | 2022-09-13 | 2022-09-13 | Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115467549A true CN115467549A (en) | 2022-12-13 |
Family
ID=84332653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211109958.5A Pending CN115467549A (en) | 2022-09-13 | 2022-09-13 | Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115467549A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107108A (en) * | 2019-04-19 | 2019-08-09 | 湖北蓝瑞联合建筑科技有限公司 | External wall leaks comprehensive repairerment method |
| CN111828057A (en) * | 2020-07-30 | 2020-10-27 | 厦门顶巢建筑修缮研究院有限公司 | System and process for repairing leakage water of high-speed rail and subway tunnel |
| CN215669744U (en) * | 2021-08-30 | 2022-01-28 | 广东科顺修缮建筑技术有限公司 | Masonry structure basement seepage slip casting repair structure |
| CN114607170A (en) * | 2022-03-21 | 2022-06-10 | 安徽欣生防水工程有限公司 | Seam leakage stopping and reinforcing method for roof |
-
2022
- 2022-09-13 CN CN202211109958.5A patent/CN115467549A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107108A (en) * | 2019-04-19 | 2019-08-09 | 湖北蓝瑞联合建筑科技有限公司 | External wall leaks comprehensive repairerment method |
| CN111828057A (en) * | 2020-07-30 | 2020-10-27 | 厦门顶巢建筑修缮研究院有限公司 | System and process for repairing leakage water of high-speed rail and subway tunnel |
| CN215669744U (en) * | 2021-08-30 | 2022-01-28 | 广东科顺修缮建筑技术有限公司 | Masonry structure basement seepage slip casting repair structure |
| CN114607170A (en) * | 2022-03-21 | 2022-06-10 | 安徽欣生防水工程有限公司 | Seam leakage stopping and reinforcing method for roof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109457735B (en) | Method for repairing concrete wall and bottom plate water seepage cracks | |
| CN108442412A (en) | Deformation joint seepage waterproof construction method | |
| CN113323440A (en) | Concrete gap repairing and anti-seepage treatment method | |
| CN109629845A (en) | Concrete structure seam areas leakage treatment device and its construction method | |
| CN110629800A (en) | Deformation joint treatment method and deformation joint waterproof structure | |
| CN111472818A (en) | Grouting construction method for water seepage of tunnel | |
| CN207959289U (en) | Structure is repaired in a kind of leak for basement post-pouring zone position | |
| CN115467549A (en) | Repairing method for deep foundation pit basement exterior wall curtain combined with shallow grouting | |
| KR100920963B1 (en) | Water leakage maintenance structure and method of joint using high efficiency grout materials | |
| CN112360518A (en) | Rapid maintenance structure and maintenance method for tunnel circumferential construction joint | |
| KR102321316B1 (en) | floor space waterproofing construction method | |
| EP0258324B1 (en) | Process for restoring channels threatening to collapse, in particular profiled channels | |
| KR100454605B1 (en) | High-density and pressurization repair method about new/old concrete joint part | |
| CN104878772A (en) | Treating method for foundation slab leakage of deep foundation pit | |
| CN114607170A (en) | Seam leakage stopping and reinforcing method for roof | |
| CN114525800A (en) | Leakage treatment method for basement raft plate | |
| CN211080323U (en) | Leaking stoppage structure of deformation joint of communication port of basement | |
| KR19990007552A (en) | Waterproofing grouting method on the back surface of leakage of concrete structure | |
| CN113503056A (en) | Building deformation joint leakage maintenance method | |
| CN113738152A (en) | Leakage maintenance construction method for water-return beam | |
| KR20210105091A (en) | How to repair the leaky part of the roof floor | |
| KR101739747B1 (en) | Repair Method for Floor Leak of Building Basement | |
| CN1083518C (en) | Quick leak-blocking technology by pouring and filling of polyurethane | |
| CN105887937B (en) | A kind of waterproof construction and Waterproof Construction Technique | |
| CN111021427A (en) | Effluent water treatment process for sewage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221213 |