CN110359588A - The construction method of engineering fire-resistant coating for steel structure - Google Patents
The construction method of engineering fire-resistant coating for steel structure Download PDFInfo
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- CN110359588A CN110359588A CN201910486704.7A CN201910486704A CN110359588A CN 110359588 A CN110359588 A CN 110359588A CN 201910486704 A CN201910486704 A CN 201910486704A CN 110359588 A CN110359588 A CN 110359588A
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Classifications
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
-
- 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
- E04G21/14—Conveying or assembling building elements
Abstract
A kind of construction method of engineering fire-resistant coating for steel structure, using spray coating constructing technique and sequence of construction: from low to high first sprays girder steel, steel column；First protection, rear spraying, it is characterised in that the following steps are included: a, girder steel spray, b, steel column spraying; c, steel stair sprays; d, indoor wall finishing coat sprays, e, the spraying of Zhongting girder steel, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination.The construction method of engineering fire-resistant coating for steel structure of the invention has the construction procedure of coating scientific and reasonable, strong operability, construction quality is safe and reliable, steel structure fireproofing is had excellent performance, the advantages of meeting construction steel structure fireproofing technique specification (GB51249-2017) fire-resistant coating for steel structure construction work inspection lot, subdivisional work, construction unit and reach national acceptance standard, ensureing construction quality, safety, construction period and reduce engineering cost.
Description
Technical field
The present invention relates to a kind of construction methods of coating, specifically, being a kind of construction of engineering fire-resistant coating for steel structure
Method.
Background technique
Steel are a kind of construction materials that will not be burnt, and unprotected steel construction in case of fire, only needs 15 minutes,
Own temperature will rise to 540 degree or more, cause component torsional deformation itself, building collapse is caused to damage.Therefore, to steel
Structure must take measurements for fire-protection, coating fireproof coating or fire retardant.
Principal mode of the steel construction as modern architecture has light weight, intensity high at normal temperature, and anti-seismic performance is good, applies
The advantages that work period is short, and building industrialization degree is high, and space utilization rate is big, for enterprise reduces investment outlay and investee largely answers
With.But the feature of steel building fire resistance difference is also clearly, though it is heat because steel are a kind of incombustible materials
Good conductor, easily conduction heat.Steel are more than after 300 degree in temperature, and yield point and ultimate strength are remarkably decreased, and are reached
Intensity is no better than zero at 600 degree.Therefore industry not only furthers investigate fire-resistant coating for steel structure, continually develops applicable material
Material, and the construction method of fireproof coating is proposed to be strict with, especially to office occupancy to protecting office worker safe.
Chinese patent CN107377339B disclosed a kind of thicker fire-resistant coating for steel structure top and bottom process on 2 15th, 2019
Spray coating constructing technique, it is disclosed that suitably being matched in construction according to the different characteristics of material and the selection of the construction temperature at scene
Composition and division in a proportion is configured, and selects suitable nozzle diameter and spray gun pressure according to different types of coating, and hierarchical control spraying is thick
Degree, and by the parameter of each construction stage (such as temperature, lift height, time), to determine pressure, operating procedure etc. to solve
Certainly because of coating quality common fault caused by current construction technology.But it there is no open fireproof coating fundamental nature, i.e., can reach
At the Steel Fire Resistance Rating time, do not record the practical safe effect and technical data of fireproof coating.
Chinese patent CN106904908A discloses a kind of indoor thicker steel construction of sound-absorption and heat-insulation on June 30th, 2017
Fireproof coating and its construction method, the fireproof coating is by using portland cement, expanded vermiculite, expanded perlite, enhancing
Component A and ethylene-vinyl acetate copolymer emulsion that fiber, sound-absorbing auxiliary agent are mixed to form, silicone modified styrene-acrylate emulsion and
The component B that water is mixed to form is as raw material, when construction, component A and component B is first prepared respectively, later again by component A and component B
It is sufficiently mixed and is uniformly sprayed, it is disclosed that the component B of the component A of inorganic matter and organic matter.But the compatibility of the two is very
Difference is very easy to generate mixed material layering.Therefore it " is sufficiently mixed uniformly " documented by accomplishing at the construction field (site) very tired
Difficulty directly results in every time coating construction surface and has serious uneven distribution phenomenon, and fireproof coating spraying application quality, which lacks, protects
Barrier basis.
Therefore known fire-resistant coating for steel structure construction method there are problems that it is above-mentioned various inconvenient and.
Summary of the invention
The purpose of the present invention is to propose a kind of construction method of safe and reliable engineering fire-resistant coating for steel structure.
To achieve the above object, the technical solution of the invention is as follows:
A kind of construction method of engineering fire-resistant coating for steel structure, using spray coating constructing technique and sequence of construction: from low to high is first sprayed
Apply girder steel, steel column；First protection, rear spraying, it is characterised in that the following steps are included:
A, girder steel sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed；First pass spray
It applies and requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-, coating layer thickness 0.8mm-1.2mm,
Make coating layer thickness not less than 4.7mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；Use steel construction
Professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 4.7mm；Repairing: find the problem ground to detection
Fang Jinhang repairing；
B, steel column sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Steel column is sprayed using indoor thicker fire-resistant coating for steel structure, and total coating thickness is not less than 25mm, is divided 4 times and is sprayed, the
It is about 3.0mm-5.0mm that a time spraying, which requires thickness, and to be dried rear 12-spray next time again for 24 hours, coating layer thickness 5.0-
8.0mm, until reaching the thickness of coating needs；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 25mm；Repairing: detection discovery is asked
It is repaired in topic place；
C, steel stair sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Steel stair is sprayed using indoor thin section steel structure fire-resisting paint, total coating thickness 4.7mm, point all over being sprayed, first pass
Spraying requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-, coating layer thickness 0.8mm-
1.2mm makes coating layer thickness not less than 4.7mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 2.14mm；Repairing: detection is found
It is repaired in problem place；
D, indoor wall finishing coat sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Metope finishing coat is sprayed using polyurethane finish, and metope need to criticize twice putty, and first it should be noted that one be retained on metope
A little defects, such as sand holes, pitted skin and collapse uneven place and strike off, and second time putty pays attention to levelling big face, is finally polished with sand paper
After spray；60 μm of topcoat overall thickness, divides 1 time and sprayed；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling,
Crack phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, not less than 60 μm mm of average thickness are qualification；It repairs
It mends: detection place of finding the problem is repaired；
E, Zhongting girder steel sprays, sequence of construction: cleaning substrate, spraying, detection, repairing, finished product protection, authoritative department are tested in batches
It receives
Zhongting girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed, and first
It requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-all over spraying, coating layer thickness 0.8mm-
1.2mm makes coating layer thickness not less than 4.7 mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 4.7mm；Repairing: detection is found
It is repaired in problem place.
The construction method of engineering fire-resistant coating for steel structure of the invention can also be using technical measures below come further
It realizes.
Method above-mentioned, wherein the girder steel fire endurance time is 1.50h.
Method above-mentioned, wherein the steel column fire endurance time is 2.50h.
Method above-mentioned, wherein the steel stair fire endurance time is 1.0h.
Method above-mentioned, wherein the Zhongting girder steel fire resistance period is 1.5h.
Method above-mentioned, wherein the coating application keeps uniform coating thickness, coating smooth, no sag, holiday.
Method above-mentioned, wherein the finished product protection is that scene is protected with colour bar cloth, to construction site cross-operation
Other work posts of construction are taken and the region for carrying out fire prevention spraying application are isolated with extraneous with colour bar cloth, to avoid to it
The influence of its work post construction operation.
Method above-mentioned, wherein the finished product protection is the waterproofing protection of coating surface, rainy season construction will be equipped with enough
Rainproof material, and linked up in time with structure construction unit, fireproof coating completes region and applies for checking and examination, closes in time in time.
After adopting the above technical scheme, the construction method of engineering fire-resistant coating for steel structure of the invention has the advantage that
1, the construction procedure of coating is scientific and reasonable, strong operability；
2, construction quality is safe and reliable, steel structure fireproofing is had excellent performance, and meets construction steel structure fireproofing technique specification
(GB51249-2017) fire-resistant coating for steel structure construction work inspection lot, subdivisional work, construction unit reach national acceptance mark
It is quasi-；
3, construction quality, safety, construction period are ensured, engineering cost is reduced.
Specific embodiment
The present invention is further explained with reference to embodiments.
Embodiment 1
The construction method of engineering fire-resistant coating for steel structure of the invention, using spray coating constructing technique and sequence of construction: from low to high,
First spray girder steel, steel column；First protection, rear spraying, it is characterised in that the following steps are included:
A, girder steel sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, authoritative department are checked and accepted
Girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed.First pass spray
It is about 0.5mm-0.8mm that painting, which requires thickness, after to be dried, is sprayed again within about 12-24 hours next time, coating layer thickness is
0.8mm-1.2mm makes coating layer thickness not less than 4.7 mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, cracking
Phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, average thickness is qualification not less than 4.7mm；Repairing: to inspection
It is repaired in survey place of finding the problem；
B, steel column sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, authoritative department are checked and accepted
Steel column is sprayed using indoor thicker fire-resistant coating for steel structure, and total coating thickness is not less than 25mm, is divided 4 times and is sprayed, the
It is about 3.0mm-5.0mm that a time spraying, which requires thickness, after to be dried, is sprayed again within about 12-24 hours next time, coating layer thickness is
5.0-8.0mm, until reaching the thickness of coating needs；Testing requirements: appearance will uniformly, and no holiday, hollowing, peeling, cracking are existing
As；Coat thickness detection is carried out with steel construction professional test instrument, average thickness is qualification not less than 25mm；Repairing: to detection
Place of finding the problem is repaired；
C, steel stair sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, authoritative department are checked and accepted
Steel stair is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm is sprayed by several times.First pass
It is about 0.5mm-0.8mm that spraying, which requires thickness, after to be dried, is sprayed again within about 12-24 hours next time, coating layer thickness is
0.8mm-1.2mm makes coating layer thickness not less than 4.7 mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, cracking
Phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, average thickness is qualification not less than 2.14mm；Repairing: right
Place of finding the problem is detected to be repaired；
D, metope finishing coat sprays, sequence of construction: cleaning substrate, spraying, detection, repairing, finished product protection, authoritative department are tested in batches
It receives
Metope finishing coat is sprayed using polyurethane finish, need to criticize twice putty, first it should be noted that be retained in some scarce on metope
It falls into, such as sand holes, pitted skin and collapses uneven place and strike off, second time putty pays attention to levelling big face, after finally being polished with sand paper i.e.
It is sprayable.60 μm of total coating thickness, divides 1 time and sprayed；Spraying requires with a thickness of 60 μm；Testing requirements: appearance will uniformly, nothing
Holiday, hollowing, peeling, crack phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, average thickness is not less than 60 μm
Mm is qualification；Repairing: detection place of finding the problem is repaired；
E, Zhongting girder steel sprays, sequence of construction: cleaning substrate, spraying, detection, repairing, finished product protection, authoritative department are tested in batches
It receives
Zhongting girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed.First
Requiring thickness all over spraying is about 0.5mm-0.8mm, after to be dried, is sprayed again within about 12-24 hours next time, coating layer thickness is
0.8mm-1.2mm makes coating layer thickness not less than 4.7 mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, cracking
Phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, average thickness is qualification not less than 4.7mm；Repairing: to inspection
It is repaired in survey place of finding the problem.
The fire endurance of table 1- fireproof paint coating of the present invention requires and coating thickness
Construction work amount about 58400m in the construction method of engineering fire-resistant coating for steel structure of the invention2, fireproof coating selection quotient
The NB(ZY-3 of the favorite chemistry painting industry Co., Ltd production in water county) interior thin section steel structure fire-resisting paint, the indoor thickness of NH (ZY-4)
Formed steel construction fireproof coating, polyurethane finish, which is selected, helps honest board polyurethane finish.
The present invention has substantive distinguishing features and significant technological progress, the construction of engineering fire-resistant coating for steel structure of the invention
Method reaches, and designs steel column fire resistance period >=2.5h, coating layer thickness >=25mm；Girder steel fire resistance period >=1.5h, coating layer thickness >=
4.7mm；Steel stair fire resistance period >=1.0h, coating layer thickness >=4.7mm；Polyurethane finish coating layer thickness >=60 μm, outdoor fluorine carbon
Lacquer painting lacquer coat thickness >=60 μm require.Implemented in construction " space tiling, Time Continuous, the construction of balanced rhythm, for subsequent construction
Leave room for " principle, guarantee that engineering is completed by aggregate scheduling is expected, constructed using crossings on different level, to fireproof coating coating work
Cheng Jinhang is checked and accepted in batches.
The construction method of engineering fire-resistant coating for steel structure of the invention is in Jiading administrative services center grassroot project steel construction
It is used in fireproof coating engineering, significant effect, has obtained exploiting entity, supervisor and owner's abundant affirmation.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or variation.Therefore, all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (8)
1. a kind of construction method of engineering fire-resistant coating for steel structure, using spray coating constructing technique and sequence of construction: from low to high, first
Spray girder steel, steel column；First protection, rear spraying, it is characterised in that the following steps are included:
Girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed；First pass spray
It applies and requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-, coating layer thickness 0.8mm-1.2mm,
Make coating layer thickness not less than 4.7mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；Use steel construction
Professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 4.7mm；Repairing: find the problem ground to detection
Fang Jinhang repairing；
B, steel column sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Steel column is sprayed using indoor thicker fire-resistant coating for steel structure, and total coating thickness is not less than 25mm, is divided 4 times and is sprayed, the
It is about 3.0mm-5.0mm that a time spraying, which requires thickness, and to be dried rear 12-spray next time again for 24 hours, coating layer thickness 5.0-
8.0mm, until reaching the thickness of coating needs；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 25mm；Repairing: detection discovery is asked
It is repaired in topic place；
C, steel stair sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Steel stair is sprayed using indoor thin section steel structure fire-resisting paint, total coating thickness 4.7mm, point all over being sprayed, first pass
Spraying requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-, coating layer thickness 0.8mm-
1.2mm makes coating layer thickness not less than 4.7mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 2.14mm；Repairing: detection is found
It is repaired in problem place；
D, indoor wall finishing coat sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Metope finishing coat is sprayed using polyurethane finish, and metope need to criticize twice putty, and first it should be noted that one be retained on metope
A little defects, such as sand holes, pitted skin and collapse uneven place and strike off, and second time putty pays attention to levelling big face, is finally polished with sand paper
After spray；60 μm of topcoat overall thickness, divides 1 time and sprayed；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling,
Crack phenomenon；Coat thickness detection is carried out with steel construction professional test instrument, not less than 60 μm mm of average thickness are qualification；It repairs
It mends: detection place of finding the problem is repaired；
E, Zhongting girder steel sprays, sequence of construction: cleaning substrate, in batches spraying, detection, repairing, finished product protection, examination
Zhongting girder steel is sprayed using indoor thin section steel structure fire-resisting paint, and total coating thickness 4.7mm divides 3 times and sprayed, and first
It requires to spray again for 24 hours next time with a thickness of 0.5mm-0.8mm, to be dried rear 12-all over spraying, coating layer thickness 0.8mm-
1.2mm makes coating layer thickness not less than 4.7 mm；Testing requirements: appearance will uniformly, no holiday, hollowing, peeling, crack phenomenon；With
Steel construction professional test instrument carries out coat thickness detection, and average thickness is qualification not less than 4.7mm；Repairing: detection is found
It is repaired in problem place.
2. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that girder steel fire resisting pole
It is 1.50h between in limited time.
3. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that steel column fire resisting pole
It is 2.50h between in limited time.
4. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that the steel stair fire resisting
Limit time is 1.0h.
5. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that the Zhongting girder steel is resistance to
The fiery time is 1.5h.
6. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that the coating application makes
Uniform coating thickness, coating are smooth, no sag, holiday.
7. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that the finished product protection is
Scene is protected with colour bar cloth, and to other work posts of construction site cross-operation construction, taking will carried out with colour bar cloth
The region of fire prevention spraying application is with extraneous isolation, to avoid the influence to other work post construction operations.
8. the construction method of engineering fire-resistant coating for steel structure as described in claim 1, which is characterized in that the finished product protection is
The waterproofing protection of coating surface, rainy season construction will be equipped with enough rainproof materials, and link up in time with structure construction unit, fire prevention
Coating completes region and applies for checking and examination, closes in time in time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744744A (en) * | 2020-05-18 | 2020-10-09 | 中国国家铁路集团有限公司 | Construction process of non-expansion type fireproof coating for steel structure of reinforced train platform |
| CN115041374A (en) * | 2022-06-20 | 2022-09-13 | 南通大学 | Fireproof coating construction process for steel structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744744A (en) * | 2020-05-18 | 2020-10-09 | 中国国家铁路集团有限公司 | Construction process of non-expansion type fireproof coating for steel structure of reinforced train platform |
| CN115041374A (en) * | 2022-06-20 | 2022-09-13 | 南通大学 | Fireproof coating construction process for steel structure |
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Application publication date: 20191022 |