CN108425692A - A kind of tunnel outer waterproofing layer construction method - Google Patents
A kind of tunnel outer waterproofing layer construction method Download PDFInfo
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- CN108425692A CN108425692A CN201810407154.0A CN201810407154A CN108425692A CN 108425692 A CN108425692 A CN 108425692A CN 201810407154 A CN201810407154 A CN 201810407154A CN 108425692 A CN108425692 A CN 108425692A
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- coating
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- primary coat
- construction
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000004078 waterproofing Methods 0.000 title claims abstract description 15
- 229920002396 Polyurea Polymers 0.000 claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 36
- 238000005507 spraying Methods 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 24
- 230000008439 repair process Effects 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 21
- 230000013011 mating Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 5
- 235000013877 carbamide Nutrition 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000007761 roller coating Methods 0.000 claims description 3
- 238000007665 sagging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 210000000582 semen Anatomy 0.000 claims 1
- -1 stirs evenly Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention proposes a kind of tunnel outer waterproofing layer construction method, includes the following steps：(1) base treatment；(2) base repairs；(3) primary coat is constructed；(4) polyureas sprays；(5) polyurea coating is repaired.The processing of base enhances the adhesion strength of spray polyurea coating and base, and further base's repairing promotes coating quality, and primary coat construction is finer, and polyureas spraying is uniform, and coating quality greatly improves, and holiday is eliminated in polyurea coating repairing.Outer waterproofing layer adhesive force that the present invention constructs is good, intensity is high, elastic height, continuous seamless, and have good wearability, chemical resistance and resistance to ag(e)ing, effective guarantee construction quality.
Description
Technical field
The invention belongs to building engineering fields, and in particular to a kind of tunnel outer waterproofing layer construction method.
Background technology
After Reformation and development, the communications and transportation circuit in China is quickly extravagant, and tunnel construction is also rapidly developed, either
In railway, highway still pluck urban transportation, tunnel role is increasing, it promotes the quick of China's communication
Development is brought conveniently to our driving.But technology and management it is various due to, cause tunnel to pluck construction and apply
Full spectrum of threats is faced in work, these threats also directly affect the operation situation in tunnel.Percolating water as tunnel harm it
One, it is closely bound up with our life, directly threaten the safety of driving.Tunnel outer waterproofing layer plays tunnel water proofing quality
Key effect, existing construction method tend not to the quality for ensureing outer waterproofing layer since process is coarse.
Invention content
The purpose of the present invention is to propose to a kind of tunnel outer waterproofing layer construction methods, can effectively promote tunnel outer waterproofing layer
Quality.
The technical proposal of the invention is realized in this way：A kind of tunnel outer waterproofing layer construction method, includes the following steps：
(1) base treatment：Using angle grinder by spraying in need basal plane polishing and dedusting, thoroughly remove the floating of surface
Slurry, peeling, loose and impurity etc. combine weak substance, and base is made to obtain suitable roughness；For local greasy dirt, acetone is used
Or alcohol washes.
(2) base repairs：The repairing of repairing putty sealing of hole progress base is scraped using criticizing comprehensively, according to base's actual defects degree
Suitable quartz sand is added in size in putty and cement does filler, stirs evenly, and is scratched to concrete base layer packing, and blade coating applies
Unsuitable sagging and blocked up when layer, only need to be tightly all right pin hole packing, as still having a large amount of pin holes after batch scraping repairing putty comprehensively, needs
Repetition batch is scraped or sectional repair；After repairing putty is fully cured, the base after being repaired using angle grinder mild abrasion removes laitance
And dust, it such as finds that basal plane still has obvious pin hole, still needs to part and pin hole is repaired using repairing putty, until base reaches spray
Polyureas requirement is applied, i.e. base finally only allows have a little tiny pinprick, is not allow for big hole and defect；
(3) primary coat is constructed：After last time repairing putty is fully cured, after generally 24 hours, primary coat construction, bottom are carried out
Large arch dam polyurethane mating primary coat of the material using the production of match Lectra is applied, large-area construction uses roller coating or mechanically spraying,
Corner groove is aided with brushing, it is desirable that coating is uniform, no holiday, without accumulation；
(4) polyureas sprays：Spray polyurea after primary coat is thoroughly done, is first hidden the region other than spraying area with plastic cloth
Gear；The carbamide paint that coating is produced using match Lectra, the coating are made of two kinds of components of first group and second group, use pneumatic stirring
Device stirs two kinds of components, keeps continuously stirring in work progress；When spraying operation, operator's pistol
Spraying application, for spray gun preferably perpendicular to base to be painted, movement speed is uniform, and spraying sequence is difficult at first and quite easy afterwards, first up and then down, is handed in length and breadth
Fork is sprayed into the thickness of design requirement, and should work continuously spraying 2 times；It when spraying operation, such as found the abnormal situation, should stop immediately
Operation checks and can continue construction after debugging；
(5) polyurea coating is repaired：When spray polyurea completes the construction in a face, it is necessary to check in time, as found there is pin hole
When scrapes polyurea materials using a small amount of hand in time, and fast modulation blocks pin hole by hand in proportion；If occurred in spraying process small
In 250mm2Bulge, when repair coating, first reject bulge, remove damage and bond coating loosely, and by rejected region side
Coating and base's feather plucking within the scope of edge 100mm are cleaned out, and are applied the mating primary coat of large arch dam polyurethane and are used after primary coat solidification
A small amount of hand is scraped polyurea materials and is repaired by hand in proportion to design thickness；For being more than 250mm2Bulge and breakage, should pick
Except to concrete base layer, scratching base treatment agent again, by design requirement thickness spray polyurea coating, before spray polyurea coating
Original waterproof layer surface is handled using the mating primary coat of large arch dam polyurethane.
More preferably, the step (2) in putty using match Lectra production the mating repairing putty of epoxies polyureas.
Beneficial effects of the present invention are：The processing of base enhances the adhesion strength of spray polyurea coating and base, into one
Base's repairing of step promotes coating quality, and primary coat construction is finer, and polyureas spraying is uniform, and coating quality greatly improves, polyureas
Patching coating eliminates holiday.Outer waterproofing layer adhesive force that the present invention constructs is good, intensity is high, elastic height, continuous seamless,
And there is good wearability, chemical resistance and resistance to ag(e)ing, effective guarantee construction quality.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1
A kind of tunnel outer waterproofing layer construction method, includes the following steps：
(1) base treatment：Using angle grinder by spraying in need basal plane polishing and dedusting, thoroughly remove the floating of surface
Slurry, peeling, loose and impurity etc. combine weak substance, and base is made to obtain suitable roughness；For local greasy dirt, acetone is used
Or alcohol washes.
(2) base repairs：The repairing of repairing putty sealing of hole progress base is scraped using criticizing comprehensively, using the production of match Lectra
Suitable quartz sand and cement is added according to base's actual defects degree size in the mating repairing putty of epoxies polyureas in putty
Filler is done, is stirred evenly, concrete base layer packing is scratched, unsuitable sagging and blocked up when scraping coating layer only need to be pin hole packing
It is tight all right, if still there are a large amount of pin holes after batch scraping repairing putty comprehensively, need to repeat batch to scrape or sectional repair；Repairing putty is completely solid
After change, the base after being repaired using angle grinder mild abrasion removes laitance and dust, such as finds that basal plane still has obvious needle
Hole still needs to part and repairs pin hole using repairing putty, until base reaches spray polyurea requirement, i.e. base finally only allows to have few
Perhaps tiny pinprick, is not allow for big hole and defect；
(3) primary coat is constructed：After last time repairing putty is fully cured, after generally 24 hours, primary coat construction, bottom are carried out
Large arch dam polyurethane mating primary coat of the material using the production of match Lectra is applied, large-area construction uses roller coating or mechanically spraying,
Corner groove is aided with brushing, it is desirable that coating is uniform, no holiday, without accumulation；
(4) polyureas sprays：Spray polyurea after primary coat is thoroughly done, is first hidden the region other than spraying area with plastic cloth
Gear；The carbamide paint that coating is produced using match Lectra, the coating are made of two kinds of components of first group and second group, use pneumatic stirring
Device stirs two kinds of components, keeps continuously stirring in work progress；When spraying operation, operator's pistol
Spraying application, for spray gun preferably perpendicular to base to be painted, movement speed is uniform, and spraying sequence is difficult at first and quite easy afterwards, first up and then down, is handed in length and breadth
Fork is sprayed into the thickness of design requirement, and should work continuously spraying 2 times；It when spraying operation, such as found the abnormal situation, should stop immediately
Operation checks and can continue construction after debugging；
(5) polyurea coating is repaired：When spray polyurea completes the construction in a face, it is necessary to check in time, as found there is pin hole
When scrapes polyurea materials using a small amount of hand in time, and fast modulation blocks pin hole by hand in proportion；If occurred in spraying process small
In 250mm2Bulge, when repair coating, first reject bulge, remove damage and bond coating loosely, and by rejected region side
Coating and base's feather plucking within the scope of edge 100mm are cleaned out, and are applied the mating primary coat of large arch dam polyurethane and are used after primary coat solidification
A small amount of hand is scraped polyurea materials and is repaired by hand in proportion to design thickness；For more than 250mm2 bulge and breakage, should pick
Except to concrete base layer, scratching base treatment agent again, by design requirement thickness spray polyurea coating, before spray polyurea coating
Original waterproof layer surface is handled using the mating primary coat of large arch dam polyurethane.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (2)
1. a kind of tunnel outer waterproofing layer construction method, it is characterised in that include the following steps：
(1) base treatment：Using angle grinder by spraying in need basal plane polishing and dedusting, thoroughly remove surface laitance, rise
Skin, loose and impurity etc. combine weak substance, and base is made to obtain suitable roughness；For local greasy dirt, with acetone or wine
Seminal plasma is washed.
(2) base repairs：The repairing of repairing putty sealing of hole progress base is scraped using criticizing comprehensively, according to base's actual defects degree size
Suitable quartz sand is added in putty and cement does filler, stirs evenly, concrete base layer packing is scratched, when scraping coating layer
Unsuitable sagging and blocked up, only need to be tightly all right pin hole packing, as still having a large amount of pin holes after batch scraping repairing putty comprehensively, needs to repeat
It batch scrapes or sectional repair；After repairing putty is fully cured, the base after being repaired using angle grinder mild abrasion removes laitance and ash
Dirt such as finds that basal plane still has obvious pin hole, still needs to part and repair pin hole using repairing putty, until to reach spraying poly- for base
Urea requirement, i.e. base finally only allow have a little tiny pinprick, are not allow for big hole and defect；
(3) primary coat is constructed：After last time repairing putty is fully cured, after generally 24 hours, primary coat construction, primary coat material are carried out
Material is using the mating primary coat of large arch dam polyurethane of match Lectra production, and large-area construction is using roller coating or mechanically spraying, corner
Groove is aided with brushing, it is desirable that coating is uniform, no holiday, without accumulation；
(4) polyureas sprays：Spray polyurea after primary coat is thoroughly done, is first blocked the region other than spraying area with plastic cloth；It applies
The carbamide paint that material is produced using match Lectra, the coating are made of two kinds of components of first group and second group, will with agitator air
Two kinds of components are stirred, and keep continuously stirring in work progress；When spraying operation, the spraying of operator's pistol
Construction, for spray gun preferably perpendicular to base to be painted, movement speed is uniform, and spraying sequence is difficult at first and quite easy afterwards, first up and then down, intersects spray in length and breadth
It is applied to the thickness of design requirement, should work continuously spraying 2 times；It when spraying operation, such as found the abnormal situation, should stop making immediately
Industry checks and can continue construction after debugging；
(5) polyurea coating is repaired：When spray polyurea completes the construction in a face, it is necessary to check in time, when as found to have a pin hole and
The a small amount of hands of Shi Caiyong scrape polyurea materials, and fast modulation blocks pin hole by hand in proportion；If be less than in spraying process
250mm2Bulge, when repair coating, first reject bulge, remove damage and bond coating loosely, and by rejected region edge
Coating and base's feather plucking within the scope of 100mm are cleaned out, and the mating primary coat of large arch dam polyurethane are applied, after primary coat solidification, using few
Amount hand is scraped polyurea materials and is repaired by hand in proportion to design thickness；For being more than 250mm2Bulge and breakage, should reject
To concrete base layer, base treatment agent is scratched again, by design requirement thickness spray polyurea coating, is adopted before spray polyurea coating
Original waterproof layer surface is handled with the mating primary coat of large arch dam polyurethane.
2. outer waterproofing layer construction method in tunnel as described in claim 1, it is characterised in that：The step (2) in putty adopt
With the mating repairing putty of epoxies polyureas of match Lectra production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810407154.0A CN108425692A (en) | 2018-05-02 | 2018-05-02 | A kind of tunnel outer waterproofing layer construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810407154.0A CN108425692A (en) | 2018-05-02 | 2018-05-02 | A kind of tunnel outer waterproofing layer construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108425692A true CN108425692A (en) | 2018-08-21 |
Family
ID=63162186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810407154.0A Pending CN108425692A (en) | 2018-05-02 | 2018-05-02 | A kind of tunnel outer waterproofing layer construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108425692A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734434A (en) * | 2020-06-22 | 2020-10-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Spraying construction method suitable for polyurethane tunnel protective coating |
| CN111877348A (en) * | 2020-08-07 | 2020-11-03 | 宁夏回族自治区水利工程建设中心 | Drag reduction and roughness reduction method for concrete surface coating of water delivery building |
| CN112431432A (en) * | 2020-11-13 | 2021-03-02 | 深圳市海多嘉新建材有限公司 | Construction method for solving cracking of splicing seam |
| CN112727136A (en) * | 2020-12-23 | 2021-04-30 | 浙江省一建建设集团有限公司 | Waterproof renovation process for outdoor stadium stand |
| CN114773867A (en) * | 2022-03-05 | 2022-07-22 | 苏州市月星建筑防水材料有限公司 | Manufacturing process and construction process of self-adhesive polymer modified asphalt waterproof coiled material |
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2018
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| CN103161319A (en) * | 2012-10-29 | 2013-06-19 | 中国二十二冶集团有限公司 | Fish scale type curtain wall drainage channel waterproof construction method |
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| CN105040836A (en) * | 2015-06-29 | 2015-11-11 | 广西金雨伞防水装饰有限公司 | Full-sealing waterproof construction method implemented by using sealant |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734434A (en) * | 2020-06-22 | 2020-10-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Spraying construction method suitable for polyurethane tunnel protective coating |
| CN111734434B (en) * | 2020-06-22 | 2022-09-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Spraying construction method suitable for polyurethane tunnel protective coating |
| CN111877348A (en) * | 2020-08-07 | 2020-11-03 | 宁夏回族自治区水利工程建设中心 | Drag reduction and roughness reduction method for concrete surface coating of water delivery building |
| CN112431432A (en) * | 2020-11-13 | 2021-03-02 | 深圳市海多嘉新建材有限公司 | Construction method for solving cracking of splicing seam |
| CN112727136A (en) * | 2020-12-23 | 2021-04-30 | 浙江省一建建设集团有限公司 | Waterproof renovation process for outdoor stadium stand |
| CN114773867A (en) * | 2022-03-05 | 2022-07-22 | 苏州市月星建筑防水材料有限公司 | Manufacturing process and construction process of self-adhesive polymer modified asphalt waterproof coiled material |
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Application publication date: 20180821 |
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