CN112922371A - Method for protecting pre-buried steel plate from concrete pollution - Google Patents
Method for protecting pre-buried steel plate from concrete pollution Download PDFInfo
- Publication number
- CN112922371A CN112922371A CN202110136958.3A CN202110136958A CN112922371A CN 112922371 A CN112922371 A CN 112922371A CN 202110136958 A CN202110136958 A CN 202110136958A CN 112922371 A CN112922371 A CN 112922371A
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- Prior art keywords
- steel plate
- embedded steel
- concrete
- protective film
- embedded
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000005246 galvanizing Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 5
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Images
Classifications
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/30—Safety or protective measures preventing damage to building parts or finishing work during construction against mechanical damage or dirt, e.g. guard covers of stairs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention belongs to the technical field of building construction, and particularly relates to a method for protecting an embedded steel plate from concrete pollution, which comprises the following steps: firstly, finishing the links of processing, polishing and galvanizing of the pre-buried steel plate; secondly, fully paving a protective film on the top surface of the reserved embedded steel plate, and cutting off redundant protective films at the periphery of the embedded steel plate and the reserved bolt hole to enable the protective films to be completely adhered to the surface of the steel plate; installing an embedded steel plate, and pouring base concrete after the embedded steel plate is installed; and fourthly, after the pouring is finished, dismantling the bolt assembly for temporarily fixing the embedded steel plate, and stripping the protective film. The invention ensures the engineering quality of the top surface of the embedded steel plate, improves the working efficiency and saves the labor cost of the project.
Description
Technical Field
The invention relates to a method for protecting an embedded steel plate from concrete pollution, and belongs to the technical field of building construction.
Background
In engineering projects such as highway bridges, municipal works, ports and docks, steel plates or bolts and bolt assemblies are often embedded in concrete, and the steel plates, the bolts and the bolt assemblies need to be accurately embedded and installed in advance, and then concrete pouring is carried out. During the concrete casting process, slurry, residue, and the like in the concrete may be coagulated and adhere to the surface of the steel plate. When the components such as the guardrail are installed in the follow-up process, the concrete residues adhered to the surfaces of the steel plates are cleaned, and the follow-up installation operation can be carried out after the concrete residues are cleaned up.
Alternatively, the steel plates, bolts and bolt assemblies which are pre-embedded and installed in advance simply protect exposed bolts, screws and the like before concrete is poured, and basically do not protect the pre-embedded steel plates.
In addition, the cleaning of the polluted embedded steel plates and bolt assemblies to reach the qualified standard is a very delicate, time-consuming and repeated work, concrete residues on the surfaces of the steel plates are cleaned, cannot scratch or damage the surfaces of the steel plates, the concrete residues on the surfaces of a group of embedded steel plates are cleaned at least for 15-20 minutes, the working efficiency is extremely low, and in the cleaning process, a hammer, a chisel, a cutter and the like are used, so that the damage to a galvanized antirust protection system on the surfaces of the embedded steel plates cannot be avoided, and adverse effects are brought to engineering. At present, only manual cleaning is carried out one by one, and even if time-consuming cleaning is carried out, the surface of the steel plate can not reach the standard in the pre-embedding process.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: the method for protecting the pre-buried steel plate from concrete pollution is characterized in that the pre-buried steel plate is protected from being polluted by concrete and slurry in the concrete pouring process, the temporary protection effect on the surface of the steel plate is achieved, the concrete is isolated from being in direct contact with the surface of the steel plate in the concrete pouring process, and after the concrete pouring is completed, the protective layer on the surface of the steel plate is removed, so that the surface of the steel plate is smooth and clean as before.
The method for protecting the embedded steel plate from concrete pollution comprises the following steps:
firstly, finishing the links of processing, polishing and galvanizing of the pre-buried steel plate;
secondly, fully paving a protective film on the top surface of the reserved embedded steel plate, and cutting off redundant protective films at the periphery of the embedded steel plate and the reserved bolt hole to enable the protective films to be completely adhered to the surface of the steel plate;
installing an embedded steel plate, and pouring base concrete after the embedded steel plate is installed;
and fourthly, after the pouring is finished, dismantling the bolt assembly for temporarily fixing the embedded steel plate, and stripping the protective film.
Because of the isolation and protection effects of the protective film, the concrete can not pollute the surface of the steel plate: the effect of protecting the embedded steel plate from concrete pollution is good, the contact between the concrete and the top surface of the embedded steel plate can be isolated by 100%, and zero pollution to the top surface of the steel plate is ensured;
preferably, the protective film is a self-adhesive PE protective film. The PE protective film has the characteristics of soft property, good adhesion performance, easy adhesion and peeling, durability, no corrosion to products and no pollution. The self-adhesion PE protective film has no residual glue, does not pollute the surface of the embedded steel plate, and the surface of the embedded steel plate after being stripped is as clean as new.
Preferably, the thickness of the self-adhesive PE protective film is 0.05mm (5 filaments). The width is selected according to the size of the steel plate needing film sticking protection, and the color is transparent (white), black and white, colorful and the like.
Compared with the prior art, the invention has the beneficial effects that:
1) ensuring the engineering quality of the top surface of the pre-buried steel plate
The PE protective film implements isolated and closed protection on the embedded steel plate in the whole process of transportation, installation and concrete pouring of the embedded steel plate, so that the top surface of the embedded steel plate is prevented from being damaged by scratches, pollution and the like, and the top surface of the embedded steel plate is ensured to be clean as new when the PE protective film is peeled off; the appearance and the internal quality of the top surface of the embedded steel plate are protected, the mechanical damage to the top surface of the embedded steel plate in the process of cleaning concrete residues is avoided, and the original appearance of the embedded steel plate is ensured.
2) Improve the working efficiency
Compared with the method for manually cleaning and removing concrete residue pollution on the top surface of the embedded steel plate, the method has the advantages that: the time for peeling off the PE protective film is 5-10 seconds per block at most, so that the PE protective film is convenient for construction operations such as installation, removal and the like; similarly, the manual cleaning and removing of concrete residues on the top surface of one embedded steel plate requires more than 10 minutes at least for pollution, some of the concrete residues even take longer time, and the concrete residues are not cleaned, so that the working efficiency of the manual cleaning of the residues is 60-120 times (average 90 times);
3) saving labor cost of project
The manufacturing cost is low and is easy to accept; the labor cleaning cost for cleaning the embedded steel plate after the embedded steel plate is polluted by concrete can be greatly saved, and the working hours consumed by cleaning the concrete residue pollution are saved; not only saves the engineering cost, but also accelerates the working efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a pre-buried steel plate after installation is completed;
fig. 2 is a schematic structural view of the pre-buried steel plate with a PE protective film adhered thereto.
In the figure: 1. a protective film; 2. pre-burying a steel plate; 3. bolt holes.
Detailed Description
The invention is further described below with reference to examples:
example (b):
as shown in fig. 1-2, the method for protecting the embedded steel plate from concrete pollution comprises the following steps:
firstly, in a factory, embedding a steel plate 2 to complete the links of processing, polishing, galvanizing and the like;
secondly, fully paving a self-adhesive PE protective film with the thickness of 0.05mm on the top surface of the reserved embedded steel plate 2, and cutting off the redundant PE protective film at the periphery of the embedded steel plate 2 and the position of the reserved bolt hole 3 to enable the PE protective film to be completely adhered to the surface of the steel plate;
thirdly, transporting and installing the embedded steel plate 2, pouring base concrete, and preventing the surface of the steel plate from being polluted by residues of the concrete due to the isolation and protection effects of the PE protective film 1;
and fourthly, after the pouring is finished, the bolt assembly for temporarily fixing the embedded steel plate 2 is dismounted, the PE protective film 1 is peeled off, the PE protective film 1 has no residual glue, the surface of the embedded steel plate 2 cannot be polluted, and the embedded steel plate is smooth and clean.
Application example:
only take bay bridge guardrail embedded bolt as an example (not contain lamp pole, sign is pre-buried), the bridge length 5012m sets up 1 guardrail stand at every 4m, design interval 2m, 1 pre-buried steel sheet of every guardrail stand, and two sides need 5012/2 x 2 altogether be 5012 pre-buried steel sheets. The manual work can be saved by about 40 working days and about 8000 yuan compared with the manual cleaning method by manually working for 8 hours/day and manually paying for 200 yuan/day.
From the above analysis it is shown that: when the method is adopted, the time for removing the PE protective film is less than 1 day and is basically ignored, so that the labor and cost for manually cleaning the polluted concrete of the embedded steel plate are greatly saved, and the quality protection of the embedded assembly is facilitated.
Claims (3)
1. A method for protecting pre-buried steel plates from concrete pollution is characterized by comprising the following steps:
firstly, finishing the links of processing, polishing and galvanizing the embedded steel plate (2) in a factory;
secondly, fully paving a protective film (1) on the top surface of the reserved embedded steel plate (2), and cutting off redundant protective films on the periphery of the embedded steel plate (2) and the reserved bolt holes (3) to be completely adhered to the surface of the steel plate;
thirdly, transporting and installing the embedded steel plate (2), and pouring base concrete after the embedded steel plate (2) is installed;
and fourthly, after the pouring is finished, dismantling the bolt assembly for temporarily fixing the embedded steel plate (2), and stripping the protective film (1).
2. The method for protecting the embedded steel plates from the concrete pollution according to claim 1, wherein the method comprises the following steps: the protective film (1) is a self-adhesive PE protective film.
3. The method for protecting the embedded steel plates from the concrete pollution according to claim 2, wherein the method comprises the following steps: the thickness of the self-adhesive PE protective film is 0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110136958.3A CN112922371A (en) | 2021-02-01 | 2021-02-01 | Method for protecting pre-buried steel plate from concrete pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110136958.3A CN112922371A (en) | 2021-02-01 | 2021-02-01 | Method for protecting pre-buried steel plate from concrete pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112922371A true CN112922371A (en) | 2021-06-08 |
Family
ID=76169298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110136958.3A Pending CN112922371A (en) | 2021-02-01 | 2021-02-01 | Method for protecting pre-buried steel plate from concrete pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112922371A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325533A (en) * | 1979-08-23 | 1982-04-20 | Sigma Bauelemente Gmbh | Housing device for isolating connecting reinforcements at joints between first and subsequently poured concrete structures |
| CN102501458A (en) * | 2011-10-19 | 2012-06-20 | 珠海拾比佰彩图板股份有限公司 | Highlight triple-coating and triple-baking color coated steel sheet and preparation method thereof |
| CN202644767U (en) * | 2012-07-06 | 2013-01-02 | 湖北卓宝建筑节能科技有限公司 | Waterproof insulation integrated board |
| CN206801019U (en) * | 2017-03-31 | 2017-12-26 | 中国建筑第二工程局有限公司 | A kind of anti-Concrete contamination mat structure of pre-embedded steel slab and its system |
| CN110258618A (en) * | 2019-06-26 | 2019-09-20 | 广东电网有限责任公司 | A kind of gum cover for pre-embedded steel slab expansion joint |
| CN110616818A (en) * | 2019-08-27 | 2019-12-27 | 广东省建筑工程机械施工有限公司 | Construction method for building shock insulation layer |
-
2021
- 2021-02-01 CN CN202110136958.3A patent/CN112922371A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325533A (en) * | 1979-08-23 | 1982-04-20 | Sigma Bauelemente Gmbh | Housing device for isolating connecting reinforcements at joints between first and subsequently poured concrete structures |
| CA1130104A (en) * | 1979-08-23 | 1982-08-24 | Lothar Tiletschke | Housing device for isolating connecting reinforcements at joints between first and subsequently poured concrete structures |
| CN102501458A (en) * | 2011-10-19 | 2012-06-20 | 珠海拾比佰彩图板股份有限公司 | Highlight triple-coating and triple-baking color coated steel sheet and preparation method thereof |
| CN202644767U (en) * | 2012-07-06 | 2013-01-02 | 湖北卓宝建筑节能科技有限公司 | Waterproof insulation integrated board |
| CN206801019U (en) * | 2017-03-31 | 2017-12-26 | 中国建筑第二工程局有限公司 | A kind of anti-Concrete contamination mat structure of pre-embedded steel slab and its system |
| CN110258618A (en) * | 2019-06-26 | 2019-09-20 | 广东电网有限责任公司 | A kind of gum cover for pre-embedded steel slab expansion joint |
| CN110616818A (en) * | 2019-08-27 | 2019-12-27 | 广东省建筑工程机械施工有限公司 | Construction method for building shock insulation layer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210608 |
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| RJ01 | Rejection of invention patent application after publication |