CN111536362B - Method for grouting and reinforcing fiber grids of large-diameter concrete pipeline lining - Google Patents
Method for grouting and reinforcing fiber grids of large-diameter concrete pipeline lining Download PDFInfo
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- CN111536362B CN111536362B CN202010349926.7A CN202010349926A CN111536362B CN 111536362 B CN111536362 B CN 111536362B CN 202010349926 A CN202010349926 A CN 202010349926A CN 111536362 B CN111536362 B CN 111536362B
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- pipeline
- waterproof
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- mortar
- lining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/164—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing fluid being introduced in the pipe
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement
Abstract
The invention discloses a large-diameter concrete pipeline lining fiber grid grouting reinforcement method, which comprises the following steps: cleaning the inner surface of the damaged concrete pipeline to be reinforced; installing fiber grids on the inner surface of the treated pipeline, and temporarily fixing the fiber grids by using a device; installing a waterproof surface layer on the outer side of the installed fiber grid, and temporarily fixing the waterproof surface layer by using a device; pouring mortar into the gap between the laid fiber grid and the waterproof surface layer; and after the mortar maintenance is finished, removing the waterproof surface layer fixing device, and welding the exposed joint of the surface layer. The method can obviously improve the bearing capacity of the structure, form an effective waterproof layer on the surface of the structure, simultaneously avoid excavation, ensure rapid construction and have less influence on life.
Description
Technical Field
The invention relates to the technical field of structural reinforcement, in particular to a damaged pipeline reinforcing method. The fiber mesh is particularly suitable for long-distance and large-diameter underground concrete damaged pipelines to improve the stress performance of the structure by using the fiber mesh, and the reinforcement and waterproof effects are realized.
Background
After the urban underground concrete pipeline system runs for a long time, due to factors such as design defects, severe environments, accidental disasters and the like, pipeline concrete cracks and damages, the working performance is gradually deteriorated, and serious economic loss is caused. To the above-mentioned damaged pipeline, need carry out effectual reinforcement and restoration to resume original bearing capacity, guarantee the normal working property of pipeline.
Common large-diameter pipeline reinforcing and repairing methods include a concrete-encased method, a sleeve grouting method, a fiber cloth-lined method and the like. Although these reinforcement methods can effectively improve the load-bearing capacity of the structure through the reinforcement design, each method has certain disadvantages. The outer concrete coating method needs excavation, and the local concrete pouring outside the pipeline can generate structural unevenness along the axial direction of the pipe, so that the stress of the pipeline is not facilitated. The sleeve grouting method has complex process and higher cost, greatly reduces the pipe diameter, and has difficult guarantee of long-term performance. The lining fiber cloth reinforcing method has low efficiency of improving the strength and the rigidity of the pipeline, long time consumption for large-area reinforcement, needs to paste fiber materials in multiple layers, has high requirements on the pasting process and directly influences the reinforcing effect.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects of the prior art, the invention provides a non-excavation, low-cost, quick and efficient underground concrete pipeline reinforcing method, which ensures the long-term performance of the pipeline and reduces the influence on production and life.
The technical scheme is as follows: the invention relates to a method for reinforcing a large-diameter concrete pipeline lining fiber grid by grouting, which comprises the following steps:
(1) cleaning the inner surface of a damaged concrete pipeline to be reinforced, wherein the pipeline is a circular pipeline with the diameter of more than 1m or other-shaped pipelines with the height of more than 1m and the width of more than 0.9 m;
(2) installing the cut fiber grids on the inner surface of the cleaned pipeline, and temporarily fixing the fiber grids;
(3) installing waterproof panels outside the fiber grids paved in the pipeline, temporarily fixing the waterproof panels by using a fixing device, splicing a plurality of waterproof panels into a waterproof surface layer covering the inner wall of the pipeline, and forming a gap between the waterproof surface layer and the inner wall of the pipeline;
(4) arranging a sealing ring at the end part of the pipeline construction section, wherein the sealing ring is positioned between the inner wall of the pipeline and the waterproof surface layer to seal a gap between the inner wall of the pipeline and the waterproof surface layer, and arranging a mortar injection hole and a mortar discharge hole on the sealing ring;
(5) injecting mortar into the gap between the waterproof surface layer and the inner wall of the pipeline through the mortar injection hole, and stopping grouting when the mortar flows out from the mortar discharge hole at a constant speed;
(6) and (4) after the mortar maintenance is finished, removing the fixing device of the waterproof panels in the step (3), welding the exposed joints between the waterproof panels, and connecting the waterproof panels into an integral waterproof surface layer.
According to a further preferable technical scheme of the invention, in the step (2), the fiber mesh is a mesh-shaped material formed by molding the fibers and the resin.
Preferably, when the overlap is used with insufficient mesh length, the overlap length is at least 200 mm.
Preferably, the steel nails with gaskets are used for temporarily fixing the fiber grids in the step (2);
every time the fiber grid is laid by 0.5-0.8 m, a steel nail with a gasket is driven into the surface of the structure and used for temporarily fixing the fiber grid, and the steel nail is close to a node of the fiber grid.
Preferably, the gasket is a steel gasket or a plastic gasket, and is rectangular or circular in shape.
Preferably, the waterproof panel in step (3) is a high-density polyethylene panel, one surface of the panel facing the inner wall of the pipeline is a protruding bonding surface, and the other surface of the panel is a smooth waterproof surface.
Preferably, the fixing device for temporarily fixing the waterproof panels in step (3) is a plurality of arc-shaped frames, each waterproof panel is embedded into the corresponding frame, and adjacent frames are connected by bolts.
Preferably, the sealing ring in the step (4) is a double-layer rubber sealing ring; the injection hole and the discharge hole are arranged at the top of the sealing ring.
Preferably, the mortar in the step (5) is a high-fluidity, high-strength and non-shrinkable ready-mixed mortar.
Preferably, the seam welding in the step (6) adopts a high-density polyethylene welding rod made of the same material as the waterproof panel.
Has the advantages that: (1) according to the grouting reinforcement method for the fiber grids lined in the large-diameter concrete pipeline, disclosed by the invention, the functions of the fiber grids, mortar and a waterproof surface layer are fully exerted, the fiber grids are light and high in strength, the bearing capacity of the pipeline is effectively improved, the thickness of a reinforcement layer is reduced, and the transportation capacity of the pipeline is greatly improved; the waterproof surface layer has good water tightness, strong corrosion resistance and extremely high ductility, can ensure the long-term performance of the pipeline, avoids the waterproof process and improves the construction efficiency. The mortar can replace epoxy glue in the existing reinforcing method, has good bonding effect and simultaneously bears partial load, and the method can obviously improve the bearing capacity of the structure, form an effective waterproof layer on the surface of the structure, simultaneously avoid excavation, realize rapid construction and have small influence on life.
(2) The reinforcing material can be prefabricated in factories, can be installed on construction sites, has simple process, quick reinforcement and short construction period, and can quickly repair damaged pipelines.
(3) The fiber grid has excellent durability, high strength and good fatigue performance, and is stressed bidirectionally, so that the structural form can ensure that the stress distribution is more uniform, the stress concentration phenomenon is weakened, and the crack development is restrained bidirectionally; meanwhile, the fiber grids are used as reinforcing materials, fixation can be achieved through anchor bolts, epoxy glue is not used, the phenomenon that the lining fiber cloth reinforces the hollow drum is avoided, and construction quality is improved.
(4) The invention adopts the high-density polyethylene waterproof surface layer, ensures the long-term working performance of the reinforced pipeline, avoids the procedures of anticorrosion and waterproof treatment in the existing reinforcing method and greatly shortens the construction time; meanwhile, the ductility of the polyethylene surface layer is high, and the pipeline can still be guaranteed not to be damaged and leaked under the condition of large deformation.
(5) The thickness of the reinforcing layer is small, and the drainage performance of the pipeline is basically not influenced; in addition, the method adopted by the invention belongs to a non-excavation reinforcement mode, the ground traffic is not obstructed, the grouting material adopts special mortar, the hardening time is short, the strength is high, the time for water cut-off of the pipeline is reduced, and the influence on the production and the life is reduced; the repairing and reinforcing method has wide application range, can be used for repairing longer pipe sections, horizontal and vertical pipe sections, large-diameter pipe sections with different section shapes, and can also be used for repairing highway culverts.
Drawings
Figure 1 is a schematic view of a pipe to be reinforced,
figure 2 is a schematic view of a duct-mounted fiber mesh,
figure 3 is a schematic view of the waterproof surface layer of the pipeline installation,
figure 4 is a schematic view of a pipeline grouting,
figure 5 is a schematic view of the welding of the waterproof facing,
fig. 6 is a partial enlarged view of the structure of the lining fiber grid grouting reinforcement pipeline.
Wherein, the method comprises the steps of 1-pipeline, 2-structural crack, 3-fiber grid, 4-steel nail with gasket, 5-waterproof panel, 6-frame, 7-mortar and 8-welding seam.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a method for reinforcing a large-diameter concrete pipeline by grouting fiber grids in a lining.
The pipeline 1 is a concrete circular pipeline with the diameter of more than 1m and capable of entering people, or a pipeline with the height of more than 1m and the width of more than 0.9m and capable of entering other shapes. The pipeline concrete can crack and break under long-term use, and a structural crack 2 is formed.
The concrete reinforcing method comprises the following steps:
(1) firstly, manually surveying the interior of a pipeline 1, removing foreign matter garbage in the pipeline and chiseling a concrete degraded part of the pipeline wall; then, washing the inner wall surface of the pipeline 1 by using a high-pressure water gun and keeping the inner wall surface dry;
(2) putting the fiber grids 3 cut according to the design size into the pipeline 1 through the manual access hole; then fixing the fiber grid 3 on the inner wall of the pipeline 1 by using a steel nail 4 with a gasket; in particular, the edges of the spacer should be aligned with the edges of the longitudinal and transverse ribs at the nodes of the fiber network 3 during driving of the anchor bolt, without damaging the reinforcing material; when the length of the fiber mesh 3 is insufficient and the lapping is adopted, the lapping length is at least 200 mm;
(3) embedding the cut polyethylene waterproof panels 5 cut according to the design size into a special frame 6 in the direction that the protruding surfaces face the inner wall of the pipeline, putting the cut polyethylene waterproof panels into the pipeline through a manual access hole for installation, splicing a plurality of waterproof panels 5 into a waterproof surface layer covering the inner wall of the pipeline 1, and forming a gap between the waterproof surface layer and the inner wall of the pipeline 1;
(4) arranging a sealing ring at the end part of the pipeline construction section, wherein the sealing ring is positioned between the inner wall of the pipeline and the waterproof surface layer to seal a gap between the inner wall of the pipeline and the waterproof surface layer, and arranging a mortar injection hole and a mortar discharge hole on the sealing ring;
(5) conveying high-fluidity and high-strength mortar 7 to the mortar injection opening through a ground pump truck; stopping injecting the mortar 7 after the mortar stably flows out from the discharge port; the mortar 7 adopted for pouring is added with the expansion material, so that the mortar cannot shrink in the subsequent hardening process, the gap between the waterproof panel 5 and the pipeline 1 can be fully filled, and the compactness is ensured;
(6) after the maintenance of the mortar layer is finished, the special frame 6 is removed, and the exposed seam after the frame is removed is welded by a handheld welding gun and a polyethylene welding rod to form a welding seam 8, so that the sealing performance of the waterproof layer is ensured.
The reinforcement repairing method does not need a subsequent anti-corrosion treatment process, is short in construction time, easy to operate and low in cost, and has obvious advantages compared with the existing reinforcement technology. The method has wide application range, and can be used for reinforcing large-diameter concrete pipeline systems in complex environments.
The technical effects of the invention can be further illustrated by carrying out axial compression strength tests, transverse bending strength tests and water tightness tests on the fiber grids and the mortar-reinforced scaled pipeline. The experimental result shows that the axial compressive strength of the pipeline reinforced by the fiber grids and the mortar with the thickness of 20mm is improved by 1.53 times; the transverse bending cracking load is improved by 9.53 times, and the transverse bending failure load is improved by 5.87 times; the waterproof surface layer has excellent performance, and the water tightness, the corrosion resistance, the abrasion resistance and the ductility are greatly improved compared with the traditional hard PVC pipe.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A large-diameter concrete pipeline lining fiber grid grouting reinforcement method is characterized by comprising the following steps:
(1) cleaning the inner surface of a damaged concrete pipeline to be reinforced, wherein the pipeline is a circular pipeline with the diameter of more than 1m or other-shaped pipelines with the height of more than 1m and the width of more than 0.9 m;
(2) installing the cut fiber grids on the inner surface of the cleaned pipeline, and temporarily fixing the fiber grids;
(3) installing waterproof panels outside the fiber grids paved in the pipeline, temporarily fixing the waterproof panels by using a fixing device, splicing a plurality of waterproof panels into a waterproof surface layer covering the inner wall of the pipeline, and forming a gap between the waterproof surface layer and the inner wall of the pipeline;
(4) arranging a sealing ring at the end part of the pipeline construction section, wherein the sealing ring is positioned between the inner wall of the pipeline and the waterproof surface layer to seal a gap between the inner wall of the pipeline and the waterproof surface layer, and arranging a mortar injection hole and a mortar discharge hole on the sealing ring;
(5) injecting mortar into the gap between the waterproof surface layer and the inner wall of the pipeline through the mortar injection hole, and stopping grouting when the mortar flows out from the mortar discharge hole at a constant speed;
(6) and (4) after the mortar maintenance is finished, removing the fixing device of the waterproof panels in the step (3), welding the exposed joints between the waterproof panels, and connecting the waterproof panels into an integral waterproof surface layer.
2. The method for grouting reinforcement of fiber mesh in the lining of large-diameter concrete pipe according to claim 1, wherein the fiber mesh in step (2) is a mesh-like material made of fiber and resin by a molding process.
3. The method for grouting reinforcement of fiber mesh in the lining of large-diameter concrete pipes according to claim 2, wherein when the fiber mesh is short and the lap joint is adopted, the lap joint length is at least 200 mm.
4. The grouting reinforcement method for fiber grids in the lining of a large-diameter concrete pipeline according to claim 2, characterized in that steel nails with gaskets are used for temporarily fixing the fiber grids in the step (2);
every time the fiber grid is laid by 0.5-0.8 m, a steel nail with a gasket is driven into the surface of the structure and used for temporarily fixing the fiber grid, and the steel nail is close to a node of the fiber grid.
5. The method for grouting reinforcement of fiber mesh in the lining of large-diameter concrete pipes according to claim 4, wherein the gasket is a steel gasket or a plastic gasket, and the shape of the gasket is rectangular or circular.
6. The method for grouting and reinforcing the fiber mesh in the lining of the large-diameter concrete pipeline according to claim 1, wherein the waterproof panel in the step (3) is a high-density polyethylene panel, one surface of the panel, which faces the inner wall of the pipeline, is a protruding bonding surface, and the other surface of the panel is a smooth waterproof surface.
7. The method for grouting reinforcement of fiber mesh in the lining of large-diameter concrete pipe according to claim 6, wherein the fixing device for temporarily fixing the waterproof panels in step (3) is a plurality of arc-shaped frames, each waterproof panel is embedded in the corresponding frame, and the adjacent frames are connected by bolts.
8. The grouting reinforcement method for the fiber grids lined in the large-diameter concrete pipeline according to claim 1, wherein in the step (4), the sealing ring is a double-layer rubber sealing ring; the injection hole and the discharge hole are arranged at the top of the sealing ring.
9. The method for grouting reinforcement of fiber mesh in the lining of large-diameter concrete pipe according to claim 1, wherein the mortar in the step (5) is high-fluidity, high-strength and non-contractible ready-mixed mortar.
10. The grouting reinforcement method for the fiber mesh lining of the large-diameter concrete pipeline according to claim 1, wherein in the step (6), a high-density polyethylene welding rod made of the same material as the waterproof panel is adopted for seam welding.
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| CN202010349926.7A CN111536362B (en) | 2020-04-28 | 2020-04-28 | Method for grouting and reinforcing fiber grids of large-diameter concrete pipeline lining |
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| CN202010349926.7A CN111536362B (en) | 2020-04-28 | 2020-04-28 | Method for grouting and reinforcing fiber grids of large-diameter concrete pipeline lining |
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| CN111536362B true CN111536362B (en) | 2021-11-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112112248A (en) * | 2020-08-28 | 2020-12-22 | 中电建生态环境集团有限公司 | Method for repairing defect of channel box |
| CN112377717B (en) * | 2020-09-18 | 2022-03-18 | 中交第二航务工程勘察设计院有限公司 | Grouting reinforcement and leakage repair construction method for cracking and damage of underground concrete pipeline |
| CN112746661B (en) * | 2020-12-30 | 2022-07-15 | 北京城市排水集团有限责任公司 | Small-sized drainage square ditch steel wire framework composite reinforcement and repair system and construction method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657718A (en) * | 2004-02-17 | 2005-08-24 | 上海市普陀区市政工程管理署 | Method for repairing sewer using water-proof film lining |
| CN2873869Y (en) * | 2006-03-30 | 2007-02-28 | 安徽省高速公路总公司 | Light composite round pipe culvert |
| CN101503881A (en) * | 2009-03-18 | 2009-08-12 | 北京特希达技术研发有限公司 | Method for reinforcing underwater structure by fiber-reinforced composite material grid ribs |
| CN101576194A (en) * | 2008-05-09 | 2009-11-11 | 中国石油天然气股份有限公司 | Prepreg repair layer structure for pipelines with defects |
| CN102046342A (en) * | 2008-04-02 | 2011-05-04 | 阿迈隆国际公司 | Pressure cast concrete or mortar lined steel pipes and methods of making the same |
| CN102605966A (en) * | 2012-03-20 | 2012-07-25 | 中冶建筑研究总院有限公司 | Method for reinforcing concrete structure |
| CN202660084U (en) * | 2012-06-16 | 2013-01-09 | 上海久坚加固工程有限公司 | Pipeline reinforced by using fiber composite cloth |
| CN104853898A (en) * | 2012-10-18 | 2015-08-19 | 齐格弗里德·施沃特 | Lining tube, renovated pressure pipe and method for renovating a pressure pipe |
| CN207003180U (en) * | 2017-07-04 | 2018-02-13 | 江苏兆通工程技术有限公司 | Utilize the ice dissolution road surface of solar energy heating |
| CN108916494A (en) * | 2018-07-10 | 2018-11-30 | 江门市志广水泥制品有限公司 | A kind of concrete drain tile and its manufacturing method with anti-corrosion function |
| CN110939799A (en) * | 2019-11-27 | 2020-03-31 | 成都龙之泉科技股份有限公司 | Pipeline repair hose based on basalt fibers |
-
2020
- 2020-04-28 CN CN202010349926.7A patent/CN111536362B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657718A (en) * | 2004-02-17 | 2005-08-24 | 上海市普陀区市政工程管理署 | Method for repairing sewer using water-proof film lining |
| CN2873869Y (en) * | 2006-03-30 | 2007-02-28 | 安徽省高速公路总公司 | Light composite round pipe culvert |
| CN102046342A (en) * | 2008-04-02 | 2011-05-04 | 阿迈隆国际公司 | Pressure cast concrete or mortar lined steel pipes and methods of making the same |
| CN101576194A (en) * | 2008-05-09 | 2009-11-11 | 中国石油天然气股份有限公司 | Prepreg repair layer structure for pipelines with defects |
| CN101503881A (en) * | 2009-03-18 | 2009-08-12 | 北京特希达技术研发有限公司 | Method for reinforcing underwater structure by fiber-reinforced composite material grid ribs |
| CN102605966A (en) * | 2012-03-20 | 2012-07-25 | 中冶建筑研究总院有限公司 | Method for reinforcing concrete structure |
| CN202660084U (en) * | 2012-06-16 | 2013-01-09 | 上海久坚加固工程有限公司 | Pipeline reinforced by using fiber composite cloth |
| CN104853898A (en) * | 2012-10-18 | 2015-08-19 | 齐格弗里德·施沃特 | Lining tube, renovated pressure pipe and method for renovating a pressure pipe |
| CN207003180U (en) * | 2017-07-04 | 2018-02-13 | 江苏兆通工程技术有限公司 | Utilize the ice dissolution road surface of solar energy heating |
| CN108916494A (en) * | 2018-07-10 | 2018-11-30 | 江门市志广水泥制品有限公司 | A kind of concrete drain tile and its manufacturing method with anti-corrosion function |
| CN110939799A (en) * | 2019-11-27 | 2020-03-31 | 成都龙之泉科技股份有限公司 | Pipeline repair hose based on basalt fibers |
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