CN1916086A - Fire-retardant coatings for tunnel, and preparation method - Google Patents
Fire-retardant coatings for tunnel, and preparation method Download PDFInfo
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- CN1916086A CN1916086A CN 200610086103 CN200610086103A CN1916086A CN 1916086 A CN1916086 A CN 1916086A CN 200610086103 CN200610086103 CN 200610086103 CN 200610086103 A CN200610086103 A CN 200610086103A CN 1916086 A CN1916086 A CN 1916086A
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Abstract
This invention discloses a method for preparing a tunnel fireproof paint, which is a powdery mixture of rubber powder, portland cement, perlite, expanded vermiculite, fly ashes hollow floating beads, silica powder, argil, light calcium carbonate, cellulose ether, concrete expansion agent and polypropylene fibers. When contacted with water, the rubber powder can be dissolved and form an emulsion. The fireproof paint can be applied by adding a certain ratio of clean water into the powdery mixture and stirring into a paste. The fireproof paint has such advantages as rational formula, simple process, good fireproof property, and easy transportation and storage. The fireproof paint can be used as fireproof coating layer of tunnels and underground architectures.
Description
Technical field
The present invention relates to a kind of fire proofing material, particularly a kind of fireproof paint that is sprayed on the tunnel wall surface.
Background technology
The tunnel is that a kind of realize target distance is the shortest, floor space few, to the traffic aisle of natural environment and landscape destruction degree minimum. Because the tunnel possesses These characteristics, the tunnel has become building common in the Modern Traffic engineering. Along with expanding economy China traffic engineering construction scale is increasing, the established tunnel total length occupies first place in the world. " Chinese Highway water transportation industry development statistical communique in 2005 " shows, ended for the end of the year 2005, the whole nation built vcehicular tunnel 2889 places, totally 152.70 myriametres; The message of the 3rd railway tunnel annual meeting issue, China will the long railway tunnel of newly-built 300 myriametres in 6 years from now on.
Because the particularity of tunnel construction structure, its environment facies are to airtight, it is relatively large that the personnel of adding pass through density, in case breaking out of fire accident in limited tunnel space, the difficult of putting out a fire to save life and property, often because the tunnel fire proofing ability causes the local accident that is burnt down, produce great casualties and property loss. The tunnel body of wall is reinforced concrete structure generally speaking, because the armored concrete non-refractory, at high temperature armored concrete cracks until strength loss. Therefore, improving tunnel body of wall fire resistance property and seem very important, is a kind of effective technology measure that stops that external heat imports at tunnel wall surface sprayed fire proofing coating.
At present, the research of China aspect fire-proof coating for tunnels has multinomial achievement, for example: China Patent Publication No. CN1544556 " fire-proof coating for tunnels and manufacturing process thereof " discloses a kind of fire-proof coating for tunnels that forms with inorganic material and two kinds of components of emulsion polymerization, and this coating is mixed into the A component by cement, aluminium triphosphate, waterglass, perlite, glass microballoon, mica powder, kaolin, alumina silicate fibre, aluminium hydroxide, magnesium hydroxide; Form the B component by polymer emulsion. China Patent Publication No. CN1594452 " segmental type environmental protection fireproof paint used for tunnel " discloses a kind of fire-proof coating for tunnels by the bi-component separately-loaded, wherein mixed by alumina cement, white cement, sepiolite, expanded perlite, precipitated calcium carbonate, superfine alumina silicate, melamine, pentaerythrite, polyphosphoric acid ammonia, silica, ammonium dichromate, magnesium hydroxide, aluminium hydroxide and form a component, another component is the pure third flexible emulsion. China Patent Publication No. CN1640949 " fire-proof coating for tunnels and manufacturing thereof and construction technology " discloses a kind of fire-proof coating for tunnels that is made of cement, expanded perlite, expansion silica, precipitated calcium carbonate, kaolin, china clay, auxiliary agent (for Negel). Above-mentioned prior art products all has good fire protecting performance, for China's tunnel fire proofing has been made contribution. Prior art products was all developed before 2005, domesticly at that time do not formulate unified fire-proof coating for tunnels standard, most enterprises is produced fire-proof coating for tunnels and is directly instructed production with reference to GA98-1995 " prestressed concrete floor slab fireproof paint current techique regulations ", also has some enterprises to instruct with reference to GA98-1995 standard formulation company standard and produces. And prestressed concrete floor slab and tunnel body of wall exist larger structure and environment difference, and therefore, prior art products can not satisfy the tunnel fire proofing requirement at aspects such as fire resistance, intensity, resistance to water, acid resistance, humidity resistances comprehensively.
The Ministry of Public Security has issued the industry standards of public safety GA98-2005 of the People's Republic of China (PRC) " xoncrete structure fireproof paint " on December 8th, 2005, this standard code the contents such as the fire protecting performance index of fire-proof coating for tunnels, test method, inspection rule, and implement on March 1st, 2006. The enforcement of new standard has proposed higher performance requirement to fire-proof coating for tunnels.
Summary of the invention
The present invention provides a kind of component uniqueness, reasonable mixture ratio, with low cost mainly for the deficiency of prior art products, and technical performance index meets the fire-proof coating for tunnels of GA98-2005 standard comprehensively.
The present invention is achieved by following technical proposals.
Fire-proof coating for tunnels is multicomponent powdery mixture; Contain in the described powdery mixture and contain percentage by weight in the percentage by weight and join the portland cement of 0.2～0.8% rubber powder and 30～40%, 10～15% perlite, 15～25% expanded vermiculite, 5～15% fly ash hollow and float pearl, 2～8% wollastonite in powder, 5～15% potter's clay, 2～8% precipitated calcium carbonates, 0.2～1.5% cellulose ether, 1～5% cement expansive material, 0.2～0.8% polypropylene fibre.
The fire-proof coating for tunnels preparation method:
A. prepare the powdery mixture
Respectively portland cement, perlite, expanded vermiculite, fly ash hollow are floated pearl, wollastonite in powder, potter's clay, precipitated calcium carbonate, cellulose ether, cement expansive material, rubber powder, polypropylene fibre by component proportion and put in the V-type Forced Mixing machine, make the powdery mixture through 15～20 minutes stirring;
B. prepare fire-proof coating for tunnels
Get as required the powdery mixture and mix peace and quiet fresh water by 75～85% of getting powdery mixture weight, stirred the tunnel water proofing coating of making thick pulpous state through 20～25 minutes.
Fire-proof coating for tunnels of the present invention compared with prior art has following good effect:
1, described fire-proof coating for tunnels is a kind of multicomponent powdery mixture, mix in proportion thick pulpous state with the peace and quiet fresh water of easily getting, namely join namely and use, market circulation only has the powdery mixture, convenient transportation, storage is easy, and the powdery mixture is modulated into simple, the easily preparation of fire-proof coating for tunnels technique with peace and quiet fresh water.
2, the rubber powder of fire-proof coating for tunnels use of the present invention is that a kind of water of meeting just dissolves the stable emulsion of formation, this rubber powder emulsion and portland cement are combined into a kind of highly effective binder so that the adhesive property of fire-proof coating for tunnels and cohesive force significantly improve, and reduced the elastic modelling quantity that is coated with formable layer, strengthen elasticity and flexural strength, improved resistance to impact, resistance to water and the weatherability of fire resistant coating.
3, contain cement expansive material in the fire-proof coating for tunnels component of the present invention, it can improve water-retaining property, thixotropy and the cementing property of fire-proof coating for tunnels, prolongs the open hour, improves workability; Cement expansive material also can improve resistance to water, acid resistance, alkali resistance, humidity resistance and the freeze thawing of fire resistant coating, and water-resistant coating reached more than 720 hours.
4, rationally use resistant to elevated temperatures polypropylene fibre in the fire-proof coating for tunnels component of the present invention, to support system, extremely effectively controlled generation and the development of the non-structural cracks such as the early stage plastic shrinkage of coating, drying shrinkage in a kind of unrest of the inner formation of coating; Effectively hinder the segregation of aggregate, hinder the formation of settlement crack, greatly improve the cracking resistance of coating, guarantee fire resistant coating do not ftracture, do not come off, without hollowing.
The inorganic filler of 5, having selected rightly perlite, expanded vermiculite, fly ash hollow to float the lightening fire resistants such as pearl in the fire-proof coating for tunnels component of the present invention, have noninflammability and heat insulation performance, improve the fire resistance of fire-proof coating for tunnels, reduced the dry density of coating; The flowability that can improve again fire-proof coating for tunnels obtains good workability.
6, all components of fire-proof coating for tunnels of the present invention is the asepsis environment-protecting shaped material, produces without " three wastes " in the production process. Main raw material(s) low value and ample supply and prompt delivery, cost performance is high.
The specific embodiment
A kind of fire-proof coating for tunnels of the present invention is multicomponent powdery mixture, and this powdery mixture is modulated into thick pulpous state with a kind of liquid and can brushes. Contain percetage by weight in the described powdery mixture and be 0.2～0.8% rubber powder, 30～40% portland cement, 10～15% perlite, 15～25% expanded vermiculite, 5～15% fly ash hollow and float pearl, 2～8% wollastonite in powder, 5～15% potter's clay, 2～8% precipitated calcium carbonate, 0.2～1.5% cellulose ether, 1～5% cement expansive material, 0.2～0.8% polypropylene fibre. Described liquid be peace and quiet fresh water account for powdery mixture weight 75～85%.
The fire-proof coating for tunnels preparation method:
A. prepare the powdery mixture
Respectively portland cement, perlite, expanded vermiculite, fly ash hollow are floated pearl, wollastonite in powder, potter's clay, precipitated calcium carbonate, cellulose ether, cement expansive material, rubber powder, polypropylene fibre by component proportion and put in the V-type Forced Mixing machine, make the powdery mixture through 15～20 minutes stirring;
B. prepare fire-proof coating for tunnels
Get as required at the construction field (site) the powdery mixture and mix peace and quiet fresh water by 75～85% of getting powdery weight, stirred the tunnel water proofing coating of making thick pulpous state through 20～25 minutes.
Embodiment 1
Successively 37% portland cement, 13% perlite, 18% expanded vermiculite, 7% fly ash hollow are floated pearl, 3% wollastonite in powder, 15% potter's clay, 4.8% precipitated calcium carbonate, 0.4% cellulose ether, 2% cement expansive material, 0.3% rubber powder, 0.5% polypropylene fibre and drop in the V-type Forced Mixing machine, start is stirred and was made the powdery mixture in 15 minutes. When present embodiment prepares fire-proof coating for tunnels at the construction field (site), get as required the powdery mixture and mix peace and quiet fresh water by 75% of getting powdery mixture weight, be stirred into the fire-proof coating for tunnels of thick pulpous state through 20 minutes, this fire-proof coating for tunnels is namely joined i.e. usefulness, and related detection project and testing result are seen attached list.
Embodiment 2
Present embodiment is substantially the same manner as Example 1, and only component percentage and technological parameter are adjusted to some extent. Successively 35% portland cement, 11% perlite, 17% expanded vermiculite, 8% fly ash hollow are floated pearl, 6% wollastonite in powder, 10% potter's clay, 6.4% precipitated calcium carbonate, 1.2% cellulose ether, 4% cement expansive material, 0.6% rubber powder, 0.8% polypropylene fibre and drop in the V-type Forced Mixing machine, start is stirred and was made the powdery mixture in 16 minutes. When present embodiment prepares fire-proof coating for tunnels at the construction field (site), get as required the powdery mixture and mix peace and quiet fresh water by 80% of getting powdery mixture weight, be stirred into the fire-proof coating for tunnels of thick pulpous state through 21 minutes, this fire-proof coating for tunnels is namely joined i.e. usefulness, and related detection project and testing result are seen attached list.
Embodiment 3
Present embodiment is substantially the same manner as Example 1, and only component percentage and technological parameter are adjusted to some extent. Successively 33% portland cement, 12% perlite, 22% expanded vermiculite, 6% fly ash hollow are floated pearl, 8% wollastonite in powder, 7% potter's clay, 4.5% precipitated calcium carbonate, 1.1% cellulose ether, 5% cement expansive material, 0.8% rubber powder, 0.6% polypropylene fibre and drop in the V-type Forced Mixing machine, start is stirred and was made the powdery mixture in 17 minutes. When present embodiment prepares fire-proof coating for tunnels at the construction field (site), get as required the powdery mixture and mix peace and quiet fresh water by 80% of getting powdery mixture weight, be stirred into the fire-proof coating for tunnels of thick pulpous state through 23 minutes, this fire-proof coating for tunnels is namely joined i.e. usefulness, and related detection project and testing result are seen attached list.
Embodiment 4
Present embodiment is substantially the same manner as Example 1, and only component percentage and technological parameter are adjusted to some extent. Successively 35% portland cement, 14% perlite, 20% expanded vermiculite, 13% fly ash hollow are floated pearl, 2% wollastonite in powder, 9% potter's clay, 3.8% precipitated calcium carbonate, 0.5% cellulose ether, 2% cement expansive material, 0.2% rubber powder, 0.5% polypropylene fibre and drop in the V-type Forced Mixing machine, start is stirred and was made the powdery mixture in 18 minutes. When present embodiment prepares fire-proof coating for tunnels at the construction field (site), get as required the powdery mixture and mix peace and quiet fresh water by 85% of getting powdery mixture weight, be stirred into the fire-proof coating for tunnels of thick pulpous state through 24 minutes, this fire-proof coating for tunnels is namely joined i.e. usefulness, and related detection project and testing result are seen attached list.
Embodiment 5
Present embodiment is substantially the same manner as Example 1, and only component percentage and technological parameter are adjusted to some extent. Successively 32% portland cement, 15% perlite, 18% expanded vermiculite, 9% fly ash hollow are floated pearl, 5% wollastonite in powder, 12% potter's clay, 4.7% precipitated calcium carbonate, 0.6% cellulose ether, 3% cement expansive material, 0.4% rubber powder, 0.3% polypropylene fibre and drop in the V-type Forced Mixing machine, start is stirred and was made the powdery mixture in 20 minutes. When present embodiment prepares fire-proof coating for tunnels at the construction field (site), get as required the powdery mixture and mix peace and quiet fresh water by 85% of getting powdery mixture weight, be stirred into the fire-proof coating for tunnels of thick pulpous state through 25 minutes, this fire-proof coating for tunnels is namely joined i.e. usefulness, and related detection project and testing result are seen attached list.
Subordinate list: fire-proof coating for tunnels embodiment technical performance testing result table
| Project name | GA98-2005 standard technique index | Measurement technology index of the present invention | ||||
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | ||
| 1. the state in container | After stirring, be even glop, without caking | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 2. drying time, surface drying, (h) | ≤24 | 9 | 10 | 8 | 8 | 9 |
| 3. adhesion strength (MPa) | ≥0.1 | 0.31 | 0.42 | 0.46 | 0.28 | 0.37 |
| 4. dry density (kg/m3) | ≤800 | 620 | 580 | 574 | 626 | 568 |
| 5. resistance to water (h) | After 720h test, coating does not ftracture, aliquation, come off, and allows slightly to swell and variable color. | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 6. acid resistance (h) | After 360h test, coating does not ftracture, aliquation, come off, and allows slightly to swell and variable color. | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 7. alkali resistance (h) | After 360h test, coating does not ftracture, aliquation, come off, and allows slightly to swell and variable color. | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 8. freeze-thawing resistant cyclic test (inferior) | After 15 times, coating does not ftracture, aliquation, come off, variable color. | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 9. humidity resistance (h) | After 720h test, coating does not ftracture, aliquation, come off, variable color. | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements | Meet the requirements |
| 10. fire resistance | Coating layer thickness 20mm, fire endurance 〉=2.0h | Coating layer thickness 20mm, fire endurance (h) | ||||
| 2.5 | 2.4 | 2.4 | 2.3 | 2.3 | ||
Annotate: People's Republic of China's industry standards of public safety is GA98-2005 " xoncrete structure fireproof paint ", and standard clause number is: GA98-2005,5.2.2
Fire-proof coating for tunnels of the present invention can also be applied on the building in similar tunnel; all can spray fire-proof coating for tunnels on the bodies of wall such as subway station, underground pedestrian walk, market place builet below the ground and underground parking; can efficiently intercept external high temperature infringement, the safety of protection body of wall.
Claims (3)
1, a kind of fire-proof coating for tunnels is multicomponent powdery mixture, it is characterized in that: described powdery mixture is made by the raw material of following weight percentage proportioning: 0.2～0.8% rubber powder and 30～40% portland cement, 10～15% perlite, 15～25% expanded vermiculite, 5～15% fly ash hollow float pearl, 2～8% wollastonite in powder, 5～15% potter's clay, 2～8% precipitated calcium carbonates, 0.2～1.5% cellulose ether, 1～5% cement expansive material, 0.2～0.8% polypropylene fibre.
2, described fire-proof coating for tunnels according to claim 1, it is characterized in that: described powdery mixture also can be made by the raw material of following weight percentage proportioning: 0.3～0.7% rubber powder and 33～39% portland cement, 10～15% perlite, 16～24% expanded vermiculite, 7～15% fly ash hollow float pearl, 2.5～6.5% wollastonite in powder, 5～15% potter's clay, 3～8% precipitated calcium carbonates, 0.25～1.25% cellulose ether, 1.5～4% cement expansive material, 0.3～0.7% polypropylene fibre.
3, a kind of preparation method of as claimed in claim 1 or 2 fire-proof coating for tunnels is characterized in that:
A. prepare the powdery mixture
Respectively portland cement, perlite, expanded vermiculite, fly ash hollow are floated pearl, wollastonite in powder, potter's clay, precipitated calcium carbonate, cellulose ether, cement expansive material, rubber powder, polypropylene fibre by component proportion and put in the V-type Forced Mixing machine, make the powdery mixture through 15～20 minutes stirring;
B. prepare fire-proof coating for tunnels
Get as required the powdery mixture and inject open-top receptacle, add in addition the peace and quiet fresh water that accounts for powdery mixture weight 75～85%, stirred the tunnel water proofing coating of making thick pulpous state through 20～25 minutes.
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| CNB200610086103XA CN100509967C (en) | 2006-08-29 | 2006-08-29 | Fire-retardant coatings for tunnel, and preparation method thereof |
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| CNB200610086103XA CN100509967C (en) | 2006-08-29 | 2006-08-29 | Fire-retardant coatings for tunnel, and preparation method thereof |
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| CN100509967C CN100509967C (en) | 2009-07-08 |
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| CN101353489B (en) * | 2008-04-22 | 2010-09-01 | 东莞市柏百顺石油化工有限公司 | Environment protective sound absorptive tunnel fire-resisting paint |
| CN101880170A (en) * | 2010-05-24 | 2010-11-10 | 北京通达耐火技术股份有限公司 | Preparation method of low-density low-thermal conductivity wet spray heat insulating material |
| CN101880145A (en) * | 2010-06-13 | 2010-11-10 | 成都威邦科技有限公司 | Tunnel fire retardant coating and preparation process and construction process thereof |
| CN101475356B (en) * | 2009-01-15 | 2011-05-25 | 同济大学 | Concrete microcrack grouting patching material based on superfine fly ash micro-bead |
| CN103146236A (en) * | 2013-04-03 | 2013-06-12 | 北方工业大学 | Fireproof coating for building |
| CN103242685A (en) * | 2012-02-10 | 2013-08-14 | 建湖苏东化工有限公司 | Hydrocarbons and high-temperature resistant flyash fireproof paint |
| CN103641497A (en) * | 2013-11-26 | 2014-03-19 | 江苏博思源防火材料科技有限公司 | Seepage-resistant tunnel fireproof paint |
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| CN103980751A (en) * | 2014-05-20 | 2014-08-13 | 北京鑫淼润泽消防工程有限公司 | Tunnel fire-proof coating as well as preparation method and application method of tunnel fire-proof coating |
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| CN106317972A (en) * | 2016-08-17 | 2017-01-11 | 北京佑琳生科技有限公司 | Tunnel mildew-proof and anti-flaming finish paint |
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| US5340612A (en) * | 1992-04-16 | 1994-08-23 | W.R. Grace & Co.-Conn. | Sprayable portland cement-based fireproofing compositions |
| CN1204670A (en) * | 1997-07-04 | 1999-01-13 | 曹岩 | Coating capable of waterproof, seepage control and leakproof |
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| CN101475356B (en) * | 2009-01-15 | 2011-05-25 | 同济大学 | Concrete microcrack grouting patching material based on superfine fly ash micro-bead |
| CN101880170A (en) * | 2010-05-24 | 2010-11-10 | 北京通达耐火技术股份有限公司 | Preparation method of low-density low-thermal conductivity wet spray heat insulating material |
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| CN103641497A (en) * | 2013-11-26 | 2014-03-19 | 江苏博思源防火材料科技有限公司 | Seepage-resistant tunnel fireproof paint |
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| CN104830137A (en) * | 2015-04-23 | 2015-08-12 | 铜陵祥云消防科技有限责任公司 | Sound-absorbing and moisture-resistant tunnel fireproof coating and preparation method thereof |
| CN105294046A (en) * | 2015-12-10 | 2016-02-03 | 栾海 | Environment-friendly light reflecting waterproof and fireproof colored coating for tunnels and preparation method |
| CN107400385A (en) * | 2016-05-18 | 2017-11-28 | 公安部四川消防研究所 | A kind of thicker fire-resistant coating for steel structure |
| CN106317972A (en) * | 2016-08-17 | 2017-01-11 | 北京佑琳生科技有限公司 | Tunnel mildew-proof and anti-flaming finish paint |
| CN106243794A (en) * | 2016-08-29 | 2016-12-21 | 唐健发 | A kind of construction method of tunnel fire proofing coating |
| CN106349793A (en) * | 2016-08-29 | 2017-01-25 | 唐健发 | Anti-shedding construction process of environment-friendly tunnel fireproof coating |
| CN106396515A (en) * | 2016-08-29 | 2017-02-15 | 唐健发 | Construction technology of novel tunnel fireproofing coating |
| CN107556799A (en) * | 2017-09-07 | 2018-01-09 | 深圳市嘉达高科产业发展有限公司 | Fireproof coating and preparation method thereof |
| CN108947387A (en) * | 2018-07-09 | 2018-12-07 | 惠州市漆优化工股份有限公司 | A kind of exterior wall heat-insulated water-fast calcimine and its construction technology |
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