CN113882707A - Structure and method for repairing crack leakage of vibration-affected part - Google Patents
Structure and method for repairing crack leakage of vibration-affected part Download PDFInfo
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- CN113882707A CN113882707A CN202111152053.1A CN202111152053A CN113882707A CN 113882707 A CN113882707 A CN 113882707A CN 202111152053 A CN202111152053 A CN 202111152053A CN 113882707 A CN113882707 A CN 113882707A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004593 Epoxy Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000005728 strengthening Methods 0.000 claims abstract description 11
- 229920002396 Polyurea Polymers 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000011440 grout Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000001680 brushing effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- 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
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- 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 invention discloses a crack leakage repairing structure and method for a vibration affected part, wherein the structure comprises internal crack chemical grouting and surface seepage prevention strengthening treatment; arranging grouting holes in an inclined hole mode, and drilling holes through cracks; after chemical grouting, chiseling a U-shaped groove along the seam, and filling elastic epoxy mortar; the surface strengthening treatment is arranged according to the elastic coating, the high-elasticity porous cloth and the elastic coating, and a plurality of blade coating treatments are carried out until the set thickness is reached; after finishing the base surface repair, brushing one special base liquid, and after the base liquid is initially set, scraping two times by using hand-scraping polyurea. The method has the advantages of simple technical process and convenient operation, solves the problems of high cost, difficult operation, easy repetition and slow effect of rigid leakage repair of the vibration-affected part of the concrete structure, ensures the engineering quality and reduces the engineering cost; has the characteristics of economy, applicability and the like, has good popularization and practical values, and can generate good economic, technical and social benefits.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a structure and a method for repairing crack leakage of a vibration-affected part.
Background
At present, wading construction projects are gradually increased, but concrete cracks leak in the construction or use process, the overall structure and quality of the project quality are affected by the concrete cracks, and the construction method has important significance on the appearance and service life of buildings. Therefore, construction enterprises actively introduce advanced concrete structure crack repairing technology and improve the overall quality and durability of buildings.
At present, the continuous influence of vibration on cracks is often generated at positions close to pipelines, equipment and the like, so that the applicability of a common crack repairing technology at the vibration-influenced positions is low, the durability is poor, and huge manpower and financial resources are wasted due to repeated repairing.
Disclosure of Invention
The invention provides a crack leakage repairing structure and method of a vibration affected part, and the technology is low in manufacturing cost, flexible in operation and high in construction efficiency.
The technical problem to be solved is that: at present, the continuous influence of vibration on cracks is often generated at positions close to pipelines, equipment and the like, so that the applicability of a common crack repairing technology at the vibration-influenced positions is low, the durability is poor, and huge manpower and financial resources are wasted due to repeated repairing.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a crack leakage repairing structure of a vibration affected part, which comprises a structural wall body and cracks, and also comprises low-viscosity epoxy poured in the cracks, U-shaped grooves formed in the two sides of the structural wall body at the cracks, elastic epoxy mortar filled in the U-shaped grooves and surface reinforcing treatment layers arranged on the two sides of the wall body;
the surface reinforcing treatment layer comprises a plurality of layers of elastic coatings coated on the structural wall and elastic sparse hole cloth arranged between the elastic coating layers.
The invention relates to a crack leakage repairing structure of a vibration affected part, and further a base liquid and a polyurea layer are arranged outside the surface reinforcing layer.
According to the crack leakage repairing structure of the vibration affected part, the thickness of the polyurea layer is not less than 2 mm.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, which comprises the following steps:
step 1: determining the position and the interval of grouting holes according to the crack condition on the structural wall, cleaning the surface of the structural wall, and drilling grouting holes communicated with the cracks above the cracks;
step 2: sealing the seam surfaces on the two sides of the structural wall by adopting epoxy daub;
and step 3: after the seam sealing material reaches a certain strength, performing a water pressing test;
and 4, step 4: installing a grouting pipe in the grouting hole, and pouring low-viscosity epoxy;
and 5: after grouting is finished for a period of time, chiseling a U-shaped groove along the crack, filling elastic epoxy mortar into the U-shaped groove, and vibrating to compact;
step 6: and (3) coating surface reinforcing treatment layers on two sides of the structural wall.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, and further in the step 1, grouting holes are inclined holes, the adjacent distance is 20-30cm, and the inclination angle is less than or equal to 45 degrees.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, and further the distance between the hole opening of a grouting hole and a crack is 5-10 cm.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, and further in step 4, grouting is performed sequentially from bottom to top and from deep to shallow.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, and further, when grouting is carried out, after pure grout appears in adjacent grouting holes, a grouting nozzle is tightened, grouting is continued, and after all adjacent holes are grouted, the designed grouting pressure is maintained for 3min, and grouting can be finished without entering the holes.
The invention relates to a construction method of a crack leakage repairing structure of a vibration affected part, and further comprises the step 6 of coating a layer of base liquid after a surface strengthening treatment layer is constructed, and coating a polyurea layer after the base liquid is initially set.
Compared with the prior art, the invention has the following beneficial effects:
1. good economic benefit: the use of the invention greatly reduces the construction cost and avoids using large machinery; the operation is simple, the manufacturing cost is low, common workers can be trained to work on duty, the construction period is short, the construction period can be ensured, and the money can be returned in advance;
2. good technical benefits are as follows: the crack repairing technology integrates the advantages of a grouting method and a surface repairing method, can embody good waterproof performance, avoids the corrosion phenomenon of internal steel bars, and improves the overall quality and durability of buildings. The bearing capacity of the building is improved, the service life of the building is prolonged, the durability of the building is enhanced, and the stable development of building enterprises is promoted;
3. good social benefits are as follows: the crack repairing technology adopts environment-friendly materials, has no pollution to water and air after completion, uses electric energy as energy, has small noise of construction equipment, and contributes to energy conservation, emission reduction and noise reduction of cities.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a schematic diagram of the grouting stage of the present invention;
FIG. 2 is a schematic view of the surface reinforcing stage structure according to the present invention.
Reference numerals:
1. a structural wall; 2. cracking; 3. grouting holes; 4. low viscosity epoxy; 5. elastic epoxy mortar; 6. a surface reinforcing treatment layer; 7. epoxy daub.
Detailed Description
As shown in fig. 1 and 2, the crack leakage repairing structure and method of the vibration affected part of the present invention comprises a structural wall 1 and a crack 2 formed on the structural wall 1, wherein one side of the structural wall 1 is provided with grouting holes 3 above the crack 2, the grouting holes 3 are inclined holes, the distance between adjacent grouting holes 3 is 20-30cm, the size of the crack is small, and the width of the crack is large; the aperture diameter is 14 mm; the position of the hole opening is 25-10cm away from the crack, the drilling angle is less than or equal to 45 degrees, the drilling depth needs to ensure that the grouting hole 3 penetrates through the crack 2, and a grouting pipe is buried. And low-viscosity epoxy 4 poured into the cracks 2 through the grouting holes 3, wherein the low-viscosity epoxy 4 is HK-G-2 low-viscosity epoxy grouting material.
And (5) after the low-viscosity epoxy 4 is poured for 48h, chiseling a U-shaped groove of 3 x 4cm along the crack 2, filling elastic epoxy mortar 5 in the U-shaped groove, and vibrating to compact.
The structural wall 1 is provided with surface strengthening treatment layers 6 within the range of covering the crack 2 on the two sides for damping and stopping water, and the surface strengthening treatment layers 6 comprise a plurality of layers of elastic coatings coated on the structural wall 1 and high-elasticity sparse hole cloth arranged between the elastic coating layers. After finishing the base surface repair, brushing a special base liquid, wherein the base liquid is required to be uniform and not to leak; after the base liquid is initially set, performing scratch coating on the base liquid twice by using hand-scraped polyurea, wherein the thickness of the coating is not less than 2 mm. Wherein the special base liquid can be SPUA-D450 base layer treating agent.
The construction method comprises the following steps:
step 1: cleaning: and (5) checking and analyzing the leakage condition in detail, and determining the position and the distance of the grouting holes 3. And cleaning the area needing construction, chiseling concrete surface precipitates, and polishing the two sides of the crack 2 in the range of 15cm respectively by using a polishing machine to ensure that the base surface is clean.
Step 2: drilling and embedding a nozzle: the grouting holes 3 are distributed in an inclined hole mode, the inclined holes are arranged along one side of the crack 2, the hole distance of the grouting holes 3 is determined according to the width of the crack, generally ranges from 20cm to 30cm, the crack is small when the crack is thin, and the crack is large when the crack is wide; the aperture is phi 14mm, the distance between the position of an orifice and the crack 2 is about 5-10cm, the drilling angle is preferably less than or equal to 45 degrees, and the drilling depth needs to be more than 20cm from the surface of concrete so as to ensure that a drilled hole penetrates through the crack 2; and embedding a grouting pipe.
And step 3: sealing the seam: and sealing the seam surfaces on the inner side and the outer side of the structural wall 1 by adopting epoxy daub 7.
And 4, step 4: and (3) pressure testing: after the joint sealing material reaches a certain strength, a water pressing test is carried out to know the grout inlet amount, the grouting pressure and the communication condition among all holes, meanwhile, the sealing effect is checked, and finally, the crack 2 is flushed by high-pressure air.
And 5: grouting: and (3) connecting a grouting pump and a grouting pipe to start grouting, and pouring HK-G-2 low-viscosity epoxy 4, wherein the grouting pressure is determined according to the opening degree of the crack 2, the grout inlet amount and the engineering structure condition. The grouting sequence is generally from bottom to top, from deep to shallow. And the grouting pressure is 0.3-0.5 MPa, when pure grout exits from adjacent holes, the grouting nozzle is tightened by using an iron wire, grouting is continued, and after all adjacent holes exit, the designed grouting pressure is maintained for 3 minutes, and grouting can be finished without entering the grouting.
Step 6: groove drilling: and (5) after the grouting is finished for 48 hours, chiseling 3-4U-shaped grooves along the cracks 2, embedding and filling elastic epoxy mortar 5, and vibrating and compacting.
And 7: surface strengthening treatment: the treatment principle is set according to the elastic coating, the high-elasticity porous cloth and the elastic coating, and multiple blade coating processes are carried out until the set thickness is reached, so that the effect of strengthening treatment at the crack 2 is achieved. After finishing the base surface repair, brushing a special base liquid, which is required to be uniform and not leak. After the base liquid is initially set, performing scratch coating on the base liquid twice by using hand-scraped polyurea, wherein the thickness of the coating is not less than 2 mm.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides a crack seepage repair structure at vibrations influence position, includes structure wall body (1) and crack (2), its characterized in that: the composite wall further comprises low-viscosity epoxy (4) poured in the crack (2), U-shaped grooves formed in the positions, on two sides of the structural wall (1), of the crack (2), elastic epoxy mortar (5) filled in the U-shaped grooves and surface strengthening treatment layers (6) arranged on two sides of the wall;
the surface strengthening treatment layer (6) comprises a plurality of layers of elastic coatings coated on the structural wall body (1) and elastic sparse hole cloth arranged between the elastic coating layers.
2. The crack leakage repair structure of a vibration-affected part according to claim 1, wherein: and a base liquid and a polyurea layer are arranged outside the surface strengthening treatment layer (6).
3. The crack leakage repair structure of a vibration-affected part according to claim 2, wherein: the thickness of the polyurea layer is not less than 2 mm.
4. The method for constructing a crack leakage repair structure of a vibration-affected zone according to any one of claims 1 to 3, comprising the steps of:
step 1: determining the positions and the intervals of grouting holes (3) according to the condition of cracks (2) on the structural wall body (1), cleaning the surface of the structural wall body (1), and drilling the grouting holes (3) communicated with the cracks (2) above the cracks (2);
step 2: sealing the seam surfaces on the two sides of the structural wall body (1) by adopting epoxy daub (7);
and step 3: after the seam sealing material reaches a certain strength, performing a water pressing test;
and 4, step 4: installing a grouting pipe in the grouting hole (3) and pouring low-viscosity epoxy (4);
and 5: after grouting is finished for a period of time, chiseling a U-shaped groove along the crack (2), filling elastic epoxy mortar (5) into the U-shaped groove, and vibrating and compacting;
step 6: and (3) coating surface reinforcing treatment layers (6) on two sides of the structural wall body (1).
5. The method of claim 4, wherein the method comprises the steps of: in the step 1, the grouting holes (3) are inclined holes, the adjacent distance is 20-30cm, and the inclination angle is less than or equal to 45 degrees.
6. The method of claim 5, wherein the method comprises the steps of: the distance between the opening of the grouting hole (3) and the crack (2) is 5-10 cm.
7. The method of claim 4, wherein the method comprises the steps of: in step 4, the grouting sequence is from bottom to top and from deep to shallow.
8. The method of claim 7, wherein the method comprises the steps of: and (3) during grouting, when pure grout appears in the adjacent grouting holes (3), tightening the grouting nozzle, continuing grouting, and after all the adjacent holes are discharged, maintaining the designed grouting pressure for 3min and stopping grouting without entering the grouting.
9. The method of claim 4, wherein the method comprises the steps of: and 6, after the surface strengthening treatment layer (6) is constructed, coating a layer of base liquid, and after the base liquid is initially solidified, coating a polyurea layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111152053.1A CN113882707A (en) | 2021-09-29 | 2021-09-29 | Structure and method for repairing crack leakage of vibration-affected part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111152053.1A CN113882707A (en) | 2021-09-29 | 2021-09-29 | Structure and method for repairing crack leakage of vibration-affected part |
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| CN113882707A true CN113882707A (en) | 2022-01-04 |
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| CN202111152053.1A Pending CN113882707A (en) | 2021-09-29 | 2021-09-29 | Structure and method for repairing crack leakage of vibration-affected part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635583A (en) * | 2022-04-19 | 2022-06-17 | 中交四公局第二工程有限公司 | Anti-leakage plugging equipment for house building construction |
| CN117211235A (en) * | 2023-11-09 | 2023-12-12 | 水利部交通运输部国家能源局南京水利科学研究院 | Panel dam impervious wall leakage disease repairing method |
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Cited By (4)
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| CN117211235A (en) * | 2023-11-09 | 2023-12-12 | 水利部交通运输部国家能源局南京水利科学研究院 | Panel dam impervious wall leakage disease repairing method |
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