CN112681128A - Construction method of bridge deck full-coating waterproof coating layer at water drainage port - Google Patents
Construction method of bridge deck full-coating waterproof coating layer at water drainage port Download PDFInfo
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- CN112681128A CN112681128A CN202011542363.XA CN202011542363A CN112681128A CN 112681128 A CN112681128 A CN 112681128A CN 202011542363 A CN202011542363 A CN 202011542363A CN 112681128 A CN112681128 A CN 112681128A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 30
- 238000000576 coating method Methods 0.000 title claims abstract description 30
- 239000011247 coating layer Substances 0.000 title claims abstract description 8
- 239000010410 layer Substances 0.000 claims abstract description 50
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 24
- 238000007598 dipping method Methods 0.000 claims description 20
- 229920000058 polyacrylate Polymers 0.000 claims description 13
- 239000011414 polymer cement Substances 0.000 claims description 13
- 239000004745 nonwoven fabric Substances 0.000 claims description 11
- 229920000728 polyester Polymers 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000004588 polyurethane sealant Substances 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
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Abstract
A construction method of a bridge deck full-coating waterproof coating layer at a water drainage port comprises the steps of spraying a concrete interface agent, constructing a pipe orifice waterproof reinforcing layer, manufacturing a waterproof layer and the like, ensures the full-coating effect of the pipe orifice waterproof reinforcing layer through the lap joint of the waterproof layer and the pipe orifice waterproof reinforcing layer, enables the waterproof effect at the water drainage port to reach the I level, can effectively resist wind and tear, dislocation and ageing, replaces the construction method of a traditional waterproof layer at a bridge deck water drainage port or even the whole bridge deck, reduces the whole load of a bridge, improves the waterproofness and the safety of the bridge, has obvious outstanding characteristics, and can also refer to the waterproof construction of other built water drainage ports or even other bridge surfaces and the like.
Description
Technical Field
The invention belongs to the technical field of waterproof construction of bridges, and particularly relates to a construction method of a bridge deck full-coating waterproof coating layer at a water drainage port.
Background
The bridge floor construction is reserved with a water outlet, the traditional waterproof method is that a water discharge pipe is coated with polyurethane sealant and then placed into the water discharge port, then a polyurethane waterproof layer with a certain thickness is pasted above the water outlet and the water discharge pipe, the polyurethane waterproof layer is paved and extended to other parts of the bridge floor, and finally a protective layer with a certain thickness is poured on the polyurethane waterproof layer to complete the bridge floor waterproof construction.
The problem is that the polyurethane sealant is easy to age and crack, water leakage channels can be generated between the drain pipe and the water outlet at the moment, the drain pipe is scrapped due to the fact that the water leakage channels can corrode the drain pipe through water leakage, meanwhile, the water leakage can also corrode reinforced concrete of the water outlet, concrete around the drain pipe falls off, and the water leakage is particularly serious when the drain pipe is made of metal materials.
Secondly, the polyurethane waterproof layer can be delaminated and cracked with the bridge structure concrete after being used for a period of time, a water leakage channel can be formed between the polyurethane waterproof layer and the bridge structure concrete, and the water leakage can also corrode the reinforced concrete and affect the safety of the bridge.
These are common problems, but no effective solution to the above problems has been found.
Disclosure of Invention
In order to solve the problems, the invention provides a construction method of a bridge deck full-coating waterproof coating layer at a drainage port, which replaces the construction mode of a traditional waterproof layer at the drainage port of the bridge deck by spraying a concrete interface agent, sticking a slurry dipping cloth, spraying a slurry spraying coating and the like, and provides an effective method for solving the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bridge floor wraps the construction method of the waterproof coating layer in the drain outlet completely, the bridge floor is constructed and preserved the drain outlet, put into drain outlet after daubing the fluid sealant, this construction method uses acrylic polymer cement waterproof coating, polyester filament non-woven fabrics, concrete interface agent, wherein by acrylic polymer cement waterproof coating dispose the spray coating according to the reference proportion of the part by weight: acrylic polymer cement waterproof paint and water in the ratio of 1 to 1; the method is characterized in that:
the process of preparing the pulp soaking cloth from the polyester filament non-woven fabric comprises the following steps: soaking the polyester filament non-woven fabric in the soaking slurry until the polyester filament non-woven fabric is saturated and does not drip, wherein the soaking slurry comprises the following reference proportions in parts by weight: acrylic polymer cement waterproof coating emulsion, sulpho-aluminosilicate cement and water are 2: 4: 1, and the sulpho-aluminosilicate cement is required to be PO42.5 or PO 52.5;
the construction steps of the bridge floor waterproof fully-wrapped water outlet are as follows:
firstly, uniformly spraying a concrete interface agent along a bridge deck to a pipe orifice of a drain pipe, then pasting a layer of slurry dipping cloth on the periphery of the pipe orifice of the drain pipe, wherein the range of pasting the slurry dipping cloth on the periphery cannot be smaller than 50mm, and the slurry dipping cloth sinks 50mm deep in the drain pipe, and the slurry dipping cloth must be pressed compactly when pasting the slurry dipping cloth in the drain pipe, so that the pasting of the slurry dipping cloth completes a waterproof reinforcing layer of the pipe orifice;
after the pipe orifice waterproof reinforcing layer is dried completely, spraying the guniting coating outwards from the pipe orifice waterproof reinforcing layer and expanding the guniting coating to the bridge floor, adhering a second layer of slurry dipping cloth on the surface of the guniting coating after the guniting coating is dried completely, spraying the guniting coating on the surface of the second layer of slurry dipping cloth after the second layer of slurry dipping cloth is dried completely, and spraying for multiple times until the thickness of the waterproof layer is more than or equal to 2.5mm, wherein the spraying of the guniting coating and the adhering of the slurry dipping cloth complete the waterproof layer;
the spraying or high-pressure spraying or brushing in the related steps is carried out, and the pressure of a spray gun is controlled to be more than or equal to 0.15MPa during high-pressure spraying.
Due to the adoption of the technical scheme, the invention has the following positive effects:
1. the invention fully exerts the property of strong plasticity of the waterproof layer made of the acrylic polymer cement waterproof coating and the polyester filament non-woven fabric, fully wraps the water outlet, seals the water leakage channel between the water drainage pipe and the reinforced concrete, protects the water drainage pipe and the reinforced concrete of the bridge structure, and is an advanced construction technology which is not adopted in the water outlet of the bridge deck so far.
2. The construction method of the invention replaces the construction mode of the traditional waterproof layer at the drainage port of the bridge deck, and the seamless lap joint of the waterproof layer and the pipe orifice waterproof reinforcing layer ensures the full-wrapping effect of the pipe orifice waterproof reinforcing layer, and effectively improves the wind uncovering resistance and ageing resistance of the drainage port and even the whole bridge waterproof system.
3. Because the tensile strength and the ultraviolet resistance of the acrylic polymer cement waterproof coating completely meet the requirements of outdoor use, a waterproof layer does not need to be constructed, so that the whole load of the bridge is reduced, the bridge has higher safety, and the subsequent maintenance is time-saving, labor-saving, convenient and quick, which is one of the characteristics that the traditional waterproof layer of the existing bridge deck does not have.
Drawings
FIG. 1 is a schematic view of the construction of the present invention.
In the above figures: 1-bridge floor, 2-drain pipe, 3-concrete interface agent, 4-pipe orifice waterproof reinforcing layer and 5-waterproof layer.
Detailed Description
The invention relates to a construction method of a bridge deck full-coating waterproof coating layer at a water drainage port, which does not need to apply a protective layer, replaces the traditional waterproof construction method of a waterproof layer at the water drainage port of the bridge deck or even the whole bridge deck, reduces the whole load of a bridge and improves the waterproof performance and the safety of the bridge.
The construction method of the invention uses acrylic polymer cement waterproof paint, polyester filament non-woven fabric and concrete interface agent.
The performance index requirements of the acrylic polymer cement waterproof coating are as follows:
the elongation at break of soaking treatment is more than or equal to 160 percent, the elongation at break of ultraviolet treatment is more than or equal to 160 percent, the combustion performance is B1 grade, the bonding strength is more than 1.0MPa, the low-temperature flexible phi 50mm rod has no crack at minus 30 ℃, the impermeability is more than 0.3MPa, the water is not permeable for 30min, the tensile strength is more than 1.2MPa, the elongation at break is more than 200 percent, the tensile strength retention rate of salt treatment is more than 80 percent, the elongation at break of salt treatment is more than 140 percent, the flexibility of salt treatment at low temperature is minus 5 ℃ has no crack, the mass loss of salt treatment is less than 2 percent, the tensile strength retention rate of heat aging is more than 80 percent, the elongation at break of heat aging is more than 150 percent, the flexibility of heat aging at low temperature is minus 5 ℃ has no crack, the thermal aging heating shrinkage rate is less than 1.0 percent, the mass loss of heat aging is more than 1 percent, the shear strength at 50 ℃ is more than 0.2MPa, Sliding and dropping.
The acrylic polymer cement waterproof coating has good tensile bonding strength, can effectively resist wind uncovering and dislocation, can ensure that the tensile strength and the elongation at break under long-time ultraviolet irradiation meet the requirements of outdoor use, and can effectively resist aging.
The polyester filament non-woven fabric is required to be 160-200 g/m2And elongation at break > 40%.
The construction method of the invention can be implemented by referring to the technical scheme in each step, which is not described in detail, but needs to be supplemented as follows:
because the slurry-soaking cloth is made of flexible materials, the slurry-soaking cloth can be bent to enter the inside of the drainage pipe, and can completely stick and wrap the gap position where the opening of the drainage pipe is combined with concrete after being dried, thereby effectively blocking a possibly generated water leakage channel.
The concrete interface agent is polymer modified cement mortar which is sold in the market, can enhance the bonding force of a waterproof layer to a base layer, has good water resistance, humidity resistance and freeze-thaw resistance, avoids the phenomena of hollowing and shelling of a plastering layer, thereby replacing manual roughening treatment and saving time and labor.
The total thickness of the pipe orifice waterproof reinforcing layer and the waterproof layer is at least 2.5mm, and according to related experiments, the waterproof layer with the paint thickness of 2.5mm constructed by the invention can achieve the I-level waterproof effect and has the performances of wind uncovering resistance and ageing resistance.
The construction method of the invention is not described in the section, and the construction can be performed by referring to the conventional technology, and the invention can also be used for the drainage of other buildings, swimming pools and toilets.
The breakthrough of the invention to the waterproof construction of the bridge is not only limited to the drainage port of the bridge floor, but also covers the waterproof layer construction of all bridge floor positions, such as railway bridges, highway bridges, other rail transit bridges and the like, particularly has incomparable function in the application of high-speed railway bridges, the waterproof layer constructed according to the invention can effectively resist strong wind and negative pressure brought by high-speed railway trains when passing through the bridge deck, greatly reduces the maintenance difficulty and cost of the bridge deck waterproof layer, and other parts of the bridge deck except for the water outlet can be constructed according to the manufacturing method of the waterproof layer in the second step of the invention after being sprayed with the concrete interface agent, appropriate upturning is carried out at corresponding positions of a ballast bed, a cable trench and the like, and a protective layer does not need to be constructed on a waterproof layer of a bridge floor, so that the overall load of the bridge is greatly reduced, and the safety of the bridge is improved.
The construction method of the invention forms a mutually connected complete construction technology through the technical scheme, the complete construction technology is mutually related and has no defects, the complete construction technology can not be separated and independently evaluated, the creativity is obvious and outstanding, and any other construction method improved from the technical scheme belongs to the protection scope of the invention.
Claims (1)
1. A bridge floor wraps the construction method of the waterproof coating layer in the drain outlet completely, the bridge floor (1) constructs and reserves the drain outlet, put into drain outlet after daubing the fluid sealant with the drain pipe (2), this construction method uses the acrylic polymer cement waterproof coating, polyester filament non-woven fabrics, concrete interface agent, wherein the acrylic polymer cement waterproof coating disposes the guniting coating according to the reference proportion of the part by weight: acrylic polymer cement waterproof paint and water in the ratio of 1 to 1; the method is characterized in that:
the process of preparing the pulp soaking cloth from the polyester filament non-woven fabric comprises the following steps: soaking the polyester filament non-woven fabric in the soaking slurry until the polyester filament non-woven fabric is saturated and does not drip, wherein the soaking slurry comprises the following reference proportions in parts by weight: acrylic polymer cement waterproof coating emulsion, sulpho-aluminosilicate cement and water are 2: 4: 1, and the sulpho-aluminosilicate cement is required to be PO42.5 or PO 52.5;
the construction steps of the bridge floor waterproof fully-wrapped water outlet are as follows:
firstly, uniformly spraying a concrete interface agent along a bridge deck to a pipe orifice of a drain pipe, then pasting a layer of slurry dipping cloth on the periphery of the pipe orifice of the drain pipe, wherein the range of pasting the slurry dipping cloth on the periphery cannot be smaller than 50mm, the slurry dipping cloth sinks 50mm deep in the drain pipe, the slurry dipping cloth needs to be pressed compactly when being pasted in the drain pipe, and the pasting of the slurry dipping cloth completes a pipe orifice waterproof reinforcing layer (3);
secondly, after the pipe orifice waterproof reinforcing layer is dried completely, the guniting coating is expanded outwards to the bridge floor from the pipe orifice waterproof reinforcing layer, a second layer of slurry dipping cloth is pasted on the surface of the guniting coating after the guniting coating is dried completely, the guniting coating is sprayed on the surface of the second layer of slurry dipping cloth after the second layer of slurry dipping cloth is dried completely, the spraying is carried out for a plurality of times until the thickness of the waterproof layer (4) is larger than or equal to 2.5mm, and the spraying of the guniting coating and the pasting of the slurry dipping cloth complete;
the spraying or high-pressure spraying or brushing in the related steps is carried out, and the pressure of a spray gun is controlled to be more than or equal to 0.15MPa during high-pressure spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011542363.XA CN112681128A (en) | 2020-12-24 | 2020-12-24 | Construction method of bridge deck full-coating waterproof coating layer at water drainage port |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011542363.XA CN112681128A (en) | 2020-12-24 | 2020-12-24 | Construction method of bridge deck full-coating waterproof coating layer at water drainage port |
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| Publication Number | Publication Date |
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| CN112681128A true CN112681128A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011542363.XA Pending CN112681128A (en) | 2020-12-24 | 2020-12-24 | Construction method of bridge deck full-coating waterproof coating layer at water drainage port |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586381A (en) * | 2008-05-20 | 2009-11-25 | 北京森聚柯高分子材料有限公司 | Waterproof structure and manufacturing method thereof |
| CN202672512U (en) * | 2012-05-15 | 2013-01-16 | 中国二十冶集团有限公司 | A non-woven fabric anti-seepage device at a connector between a gutter and a gutter spout funnel |
| CN204691100U (en) * | 2015-02-15 | 2015-10-07 | 海南红杉科创实业有限公司 | The straight water of roofing falls mouth |
| CN108018775A (en) * | 2017-12-12 | 2018-05-11 | 祥达建设有限公司 | A kind of municipal administration bridge rainwater drainage system and construction method |
| CN209082765U (en) * | 2018-10-15 | 2019-07-09 | 苏州广林建设有限责任公司 | A kind of waterproof ground metope structure |
| CN209227915U (en) * | 2018-11-27 | 2019-08-09 | 中建协和建设有限公司 | A kind of vertical water pipe of roofing falls the waterproof construction of mouth |
| CN211597420U (en) * | 2019-12-31 | 2020-09-29 | 广东青龙建筑工程有限公司 | Horizontal type water-proof structure of water falling port |
| CN211850435U (en) * | 2020-03-28 | 2020-11-03 | 四川华远建设工程有限公司 | Roof drain port waterproof structure |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
-
2020
- 2020-12-24 CN CN202011542363.XA patent/CN112681128A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586381A (en) * | 2008-05-20 | 2009-11-25 | 北京森聚柯高分子材料有限公司 | Waterproof structure and manufacturing method thereof |
| CN202672512U (en) * | 2012-05-15 | 2013-01-16 | 中国二十冶集团有限公司 | A non-woven fabric anti-seepage device at a connector between a gutter and a gutter spout funnel |
| CN204691100U (en) * | 2015-02-15 | 2015-10-07 | 海南红杉科创实业有限公司 | The straight water of roofing falls mouth |
| CN108018775A (en) * | 2017-12-12 | 2018-05-11 | 祥达建设有限公司 | A kind of municipal administration bridge rainwater drainage system and construction method |
| CN209082765U (en) * | 2018-10-15 | 2019-07-09 | 苏州广林建设有限责任公司 | A kind of waterproof ground metope structure |
| CN209227915U (en) * | 2018-11-27 | 2019-08-09 | 中建协和建设有限公司 | A kind of vertical water pipe of roofing falls the waterproof construction of mouth |
| CN211597420U (en) * | 2019-12-31 | 2020-09-29 | 广东青龙建筑工程有限公司 | Horizontal type water-proof structure of water falling port |
| CN211850435U (en) * | 2020-03-28 | 2020-11-03 | 四川华远建设工程有限公司 | Roof drain port waterproof structure |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
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Application publication date: 20210420 |