CN103420665A - Tunnel fireproof plate and production process thereof - Google Patents

Tunnel fireproof plate and production process thereof Download PDF

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Publication number
CN103420665A
CN103420665A CN2012101531102A CN201210153110A CN103420665A CN 103420665 A CN103420665 A CN 103420665A CN 2012101531102 A CN2012101531102 A CN 2012101531102A CN 201210153110 A CN201210153110 A CN 201210153110A CN 103420665 A CN103420665 A CN 103420665A
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CN
China
Prior art keywords
fire
tunnel
proof plate
solid filler
characterized
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CN2012101531102A
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Chinese (zh)
Inventor
张志明
Original Assignee
斯富迈材料科技(上海)有限公司
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Priority to CN2012101531102A priority Critical patent/CN103420665A/en
Publication of CN103420665A publication Critical patent/CN103420665A/en

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Abstract

The invention relates to a tunnel fireproof plate formula which is characterized in that the tunnel fireproof plate is prepared by mixing liquid slurry and a solid filling material with a weight percentage ratio of 20:80. In the solid filling material, diatomite, kaolin, volcanic ash, aluminum silicate, and wollastonite are adopted as main raw materials, and a modification additive and reinforcing fiber are adopted as auxiliary materials. The tunnel fireproof plate manufacturing process is simple. When the tunnel fireproof plate is manufactured, a refractory limit reaches 3h (RABT-hydrocarbon compounding heating curve), and a flexural strength (20mm plate material) is higher than 13MPa. Compared with same-type products internationally, the strength of the plate provided by the invention is higher by 3-4 times. Also, during a mounting construction process, loss is greatly reduced.

Description

A kind of fire-proof plate for tunnel and production technique thereof

Technical field

The present invention relates to the technical field of tunnel fire proofing material, specifically the production technique of a kind of formula of fire-proof plate for tunnel and this fire-proof plate for tunnel.

Background technology

Tunnel fire hazard is serious threat people's safety of life and property not only, and may cause considerable damage to traffic enforcement, the mankind's activity in production.Therefore various countries all drop into suitable strength tunnel fire hazard behavior and fire protection have been carried out to research more widely over nearly 20 years.

In Chinese patent CN2196656 silicon-magnesium heat-insulation fire-retardent (nineteen ninety-five is open), what relate to is the fire proof construction dalle, characteristics are that the PLASTIC LAMINATED upper surface is shell, are bonded with the thermal insulation layer of cubic network under shell, generally are made into two kinds, rectangle or square.The shell material of this silicon-magnesium heat-insulation fire-retardent consists of: aluminum silicate fiber, brucite fiber, vermiculite, nacrite, montmorillonite, auxiliary agent, additive.

Chinese patent CN1031217 heat-insulating fire-proofing plate matrix material and uses thereof (1989 open) relates to heat-insulating, fire-preventing composite material and purposes, particularly include heat-insulating, fire-preventing composite material that high refractoriness requires and with it is characterized in that: 1. the weight percentage of adhesives is 45 ~ 70%, and high-alumina cement accounts for 50 ~ 83% of adhesives gross weight, gypsum accounts for 8 ~ 28% of adhesives gross weight, polyvinyl formal accounts for 6 ~ 22% of adhesives gross weight, 2. the weight percentage of strongthener is 30 ~ 55%, and mineral wool, aluminum silicate fiber accounts for 81 ~ 91% of strongthener altogether, asbestos account for 9 ~ 19% of strongthener, 3. admixture is the Tai-Ace S 150 that weight percentage is 0.05 ~ 0.10%.

European patent EP 1253236(2002 is open) relate to a kind of PLASTIC LAMINATED and the application in the traffic tunnel flameproof protection thereof, this sheet material is by melamine resin, and hydrophober etc. are made, and canescence is wear-resisting and snappiness arranged.

To the protection of tunnel fire retarding component, mainly contain at present following several mode:

1, add polypropylene fiber in concrete;

2, the fire-proof heat-insulating protective layer is installed under concrete lining.

3, be coated with frie retardant coating in tunnel and water sprinkling system is installed.

With regard to this several method, if a real presence of fire in tunnel is arranged, water sprinkling system and frie retardant coating purposes are not just very large, frie retardant coating easily aging, come off; According to the relevant report of PIARC (PIARC), most countries thinks that most tunnel fire hazards betide in fuel tank and compartment, and water sprinkling system is only for special purpose.For example Norway the water sprinkling system of installing in two tunnels is arranged is the tunnel liner that has added polyurethane in order to protect.Automatic water sprinkling system is never installed in the tunnel of Belgium, Denmark, France, Italy, Holland and Britain.In Japan, only have the above long tunnel of 10km and more than a 3km and current load truck current tunnel to require to have installed water sprinkling system.In the U.S., only have several to allow the tunnel of the vehicle pass-through of loading hazardous substance that water sprinkling system has been installed.NFPA502 only also advises when the vehicle transport hazardous goods, just considers to adopt the AFFF (aqueous film-forming foam) deluge system.What have superiority most is exactly that the fire-proof heat-insulating protecting materials is installed; after this material is installed; can tolerate RABT(nytron heating curve) tunnel fire hazard of temperature curve; can meet protected surface temperature of concrete and be no more than 380 ℃; the temperature of inside concrete reinforcing steel bar is no more than the requirement of 250 ℃, can effectively prevent concrete generation spallation and destruction.In other words, after protective layer is installed, even presence of fire has several hours and also can carry out rescue work, loss just can drop to bottom line like this.

Summary of the invention

The object of the present invention is to provide a kind of improved fire-proof plate for tunnel and production technique thereof, it can overcome, and in prior art, the PLASTIC LAMINATED fire resistance period is short, folding strength is lower, while complex manufacturing, the some shortcomings that production cost is higher.

To achieve these goals, technical scheme of the present invention is: a kind of formula of fire-proof plate for tunnel, it is characterized in that: described fire-proof plate for tunnel have liquid slurry and fixedly stopping composition mix, the weight percent of liquid slurry and solid filler is 20:80, in described solid filler, take diatomite, kaolin, volcanic ash, pure aluminium silicate and wollastonite as main raw material(s), and modification outer permeation and fortifying fibre are subsidiary material.

A kind of production technique of fire-proof plate for tunnel is characterized in that: described generation technique can comprise any more step: a, solid filler, after preparation, fully stir, standby; B, making liquid slurry, the weight percent of liquid slurry and solid filler is 20:80, and solid filler is added wherein and stirs; C, by the extruding of above-mentioned compound, make idiosome, after maintenance, the demoulding becomes work in-process; D, carry out the maintenance processing after work in-process are heated up again, be cut into finished product after drying.

During use, fire-proof plate for tunnel manufacture craft of the present invention is simple, fire-proof plate for tunnel fire endurance after making reaches 3 hours (RABT-nytron heating curve), folding strength (20mm sheet material) surpasses 13Mpa, this product is with like product phase specific tenacity is over 3 ~ 4 times in the world, and in installation, loss reduces greatly simultaneously.

Embodiment:

Below in conjunction with embodiment, the invention will be further described.

The formula of a kind of fire-proof plate for tunnel of the present invention, its difference with the prior art is: described fire-proof plate for tunnel have liquid slurry and fixedly stopping composition mix, the weight percent of liquid slurry and solid filler is 20:80, in described solid filler, take diatomite, kaolin, volcanic ash, pure aluminium silicate and wollastonite as main raw material(s), and modification outer permeation and fortifying fibre are subsidiary material.

The weight percent of solid filler is:

The weight percent sum of above-mentioned stopping composition is 100%.Wherein pure aluminium silicate add the performance that has strengthened fire-proof plate for tunnel, its intensity is strengthened greatly.

Described liquid slurry preparation: adopt magnesium chloride: magnesium oxide (mol ratio)=1:1.5 ~ 1.0 are mixed with chlorine oxygen magnesium slurry.The modification outer permeation adopts pearlstone, expanded vermiculite or haydite; Fortifying fibre adopts fiberglass gridding cloth.

Above-mentioned formula test content:

(1) impact of the concentration of magnesia oxychloride cement on its bonding strength;

(2) various modification outer permeations mix under condition the impact on congealing property and ultimate compression strength in difference;

(3) impact of various modification outer permeations integrity after difference is mixed under condition its high-temp combustion.

Test method:

(1) preparation of magnesia oxychloride cement: the mensuration of the required bittern amount of standard consistency.

Employing meets the bittern that white magnesium chloride in the QB/T2605-2003 industrial hex-ammoniate and water are mixed with nine Different Weight percentage concentrations, consider slurry moulding under certain condition, adopt the slurry of the outer permeation preparation of multiple formation, its flowing property and ultimate compression strength are distinguished to some extent.Therefore adopt concept like portland cement standard consistency associated class, find out the standard consistency aequum of the slurry of each proportioning.Its testing method Vicat test method, while making its test sink at the appointed time 12-15mm, slurry is standard consistency.When each proportioning numbering and standard consistency, need the bittern amount in Table 1

Table 1

Numbering ??S-1 ??S-2 ??S-3 ??S-4 ??S-5 ??S-6 ??S-7 ??S-8 ??S-9 Bittern concentration % ??70 ??65 ??60 ??55 ??50 ??45 ??40 ??35 ??20 Consumption ??175 ??175 ??175 ??175 ??175 ??175 ??175 ??175 ??175

From showing, can find out, bittern concentration is little on the denseness impact, but its ultimate compression strength and other physicalies are had to larger impact, has in test-results and illustrates.

(2) mensuration of forming materials, maintenance and relevant parameters:

Make the slurry of standard consistency with magnesia oxychloride cement, through the vibratory compaction moulding, the demoulding after 24 hours at normal temperatures, in relative humidity, be 80-90%, temperature is carried out maintenance in the curing room of 20-25 ℃, required index while measuring each length of time, the ultimate compression strength experiment adopts the test specimen of 35 ﹡ 35 ﹡ 35mm, and deformation test adopts the test specimen of 40 ﹡ 40 ﹡ 160mm.The test specimen two ends are embedding measurement termination respectively, and the line deflection of each proportioning of the vernier caliper measurement that is 0.02mm by precision in process of setting, prove the quality of various parameters with this.

(3) mensuration of material integrity after high-temp combustion:

Make the slurry of standard consistency with magnesia oxychloride cement through the extruding aftershaping, the demoulding after 24 hours at normal temperatures, in relative humidity, be 80-90%, temperature is carried out maintenance in the curing room of 20-25 ℃, the sample of 100 ﹡ 100 ﹡ 20mm after 15 days is made test specimen in maintenance, measures the quality of various proportionings with high-temperature electric resistance furnace (top temperature reaches 1500 ℃) burning.

A kind of production technique of fire-proof plate for tunnel, its difference with the prior art is: described generation technique can comprise any more step: a, solid filler, after preparation, fully stir, standby; B, making liquid slurry, the weight percent of liquid slurry and solid filler is 20:80, and solid filler is added wherein and stirs; C, by the extruding of above-mentioned compound, make idiosome, after maintenance, the demoulding becomes work in-process; D, carry out the maintenance processing after work in-process are heated up again, be cut into finished product after drying.In a step, each composition weight percent of solid filler is: diatomite 10-15%, kaolin 25-30%, volcanic ash 10-15%, pure aluminium silicate 5-10%, wollastonite 20-30%, the outer miserable thing 15-25% of modification and fortifying fibre 5-10%, and the weight percent sum of above-mentioned stopping composition is 100%; The churning time of solid filler is 10-15 minute.In the b step, the preparation of liquid slurry is to adopt magnesium chloride: the chlorine oxygen magnesium slurry of magnesium oxide (mol ratio)=certain denseness of 1: 1.5 ~ 1.0 preparation, solid filler adds stirring 5-10 minute in liquid slurry.In the c step, compound is put into three road cylinders and is pushed, squeeze pressure 2-3kg/cm 2, after extruding, compound becomes curing idiosome, solidifies idiosome maintenance demoulding in 6~8 hours under physical environment normal temperature and becomes work in-process.In the d step, work in-process are transferred to curing room and are adopted oil hot air furnace to heat again to be warming up to 32-38 ℃, again to carry out maintenance after three days under the condition of humidity 80-90%, again transfer to ward and carry out seasoning, make it water ratio and reach 15% ~ 18%.

Embodiment 1

The weight percent of solid filler is:

Described generation technique can comprise any more step: each composition weight percent of a, solid filler is: diatomite 15%, kaolin 30%, volcanic ash 10%, pure aluminium silicate 5%, wollastonite 20%, the outer miserable thing 15% of modification and fortifying fibre 5%, the weight percent sum of above-mentioned stopping composition is 100%, above-mentioned solid filler is after preparation, fully stir 10-15 minute, standby; B, making liquid slurry, the weight percent of liquid slurry and solid filler is 20:80, the preparation of liquid slurry is to adopt magnesium chloride: the chlorine oxygen magnesium slurry of magnesium oxide (mol ratio)=certain denseness of 1: 1.5 ~ 1.0 preparation, solid filler adds stirring 5-10 minute in liquid slurry, then solid filler is added wherein and stirs; C, above-mentioned compound is put into to three road cylinders pushed, squeeze pressure 2-3kg/cm 2, after extruding, compound becomes curing idiosome, solidifies idiosome maintenance demoulding in 6~8 hours under physical environment normal temperature and becomes work in-process; D, work in-process are transferred to curing room and are adopted oil hot air furnace to heat again to be warming up to 32-38 ℃, again carry out maintenance after three days under the condition of humidity 80-90%, again transfer to ward and carry out seasoning, make it water ratio and reach 15% ~ 18%, be cut into finished product after drying.

Embodiment 2

The weight percent of solid filler is:

The formula of above two kinds of examples, through stirring, is shaped, maintenance, and the performance after cutting is in Table 2

Table 2 embodiment performance comparison

Claims (9)

1. the formula of a fire-proof plate for tunnel, it is characterized in that: described fire-proof plate for tunnel have liquid slurry and fixedly stopping composition mix, the weight percent of liquid slurry and solid filler is 20:80, in described solid filler, take diatomite, kaolin, volcanic ash, pure aluminium silicate and wollastonite as main raw material(s), and modification outer permeation and fortifying fibre are subsidiary material.
2. the formula of a kind of fire-proof plate for tunnel according to claim 1, it is characterized in that: the weight percent of solid filler is:
Diatomite 10-15%
Kaolin 25-30%
Volcanic ash 10-15%
Pure aluminium silicate 5-10%
Wollastonite 20-30%
The outer miserable thing 15-25% of modification
Fortifying fibre 5-10%
The weight percent sum of above-mentioned stopping composition is 100%.
3. the formula of a kind of fire-proof plate for tunnel according to claim 1, is characterized in that: described liquid slurry preparation: adopt magnesium chloride: the chlorine oxygen magnesium slurry of magnesium oxide (mol ratio)=1:1.5 ~ certain denseness of 1.0 preparation.
4. the formula of a kind of fire-proof plate for tunnel according to claim 1, is characterized in that: the employing of modification outer permeation pearlstone, expanded vermiculite or natural haydite; Fortifying fibre adopts fiberglass gridding cloth.
5. the production technique of a fire-proof plate for tunnel, it is characterized in that: described generation technique can comprise any more step: a, solid filler, after preparation, fully stir, standby; B, making liquid slurry, the weight percent of liquid slurry and solid filler is 20:80, and solid filler is added wherein and stirs; C, by the extruding of above-mentioned compound, make idiosome, after maintenance, the demoulding becomes work in-process; D, carry out the maintenance processing after work in-process are heated up again, be cut into finished product after drying.
6. the production technique of a kind of fire-proof plate for tunnel according to claim 5, it is characterized in that: in a step, each composition weight percent of solid filler is: diatomite 10-15%, kaolin 25-30%, volcanic ash 10-15%, pure aluminium silicate 5-10%, wollastonite 20-30%, the outer miserable thing 15-25% of modification and fortifying fibre 5-10%, and the weight percent sum of above-mentioned stopping composition is 100%; The churning time of solid filler is 10-15 minute.
7. the production technique of a kind of fire-proof plate for tunnel according to claim 5, it is characterized in that: in the b step, the preparation of liquid slurry is to adopt magnesium chloride: magnesium oxide (mol ratio)=1:1.5 ~ 1.0 are mixed with chlorine oxygen magnesium slurry, and solid filler adds stirring 5-10 minute in liquid slurry.
8. the production technique of a kind of fire-proof plate for tunnel according to claim 5, it is characterized in that: in the c step, compound is put into three road cylinders and is pushed, squeeze pressure 2-3kg/cm 2, after extruding, compound becomes curing idiosome, solidifies idiosome maintenance demoulding in 6 ~ 8 hours under physical environment normal temperature and becomes work in-process.
9. the production technique of a kind of fire-proof plate for tunnel according to claim 5, it is characterized in that: in the d step, work in-process are transferred to curing room and are adopted oil hot air furnace to heat again to be warming up to 32-38 ℃, again carry out maintenance after three days under the condition of humidity 80-90%, again transfer to ward and carry out seasoning, make it water ratio and reach 15% ~ 18%.
CN2012101531102A 2012-05-15 2012-05-15 Tunnel fireproof plate and production process thereof CN103420665A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082845A (en) * 2016-06-13 2016-11-09 秦晨 A kind of building environment-friendly composite material of heat-insulation and heat-preservation and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1876603A (en) * 2005-06-10 2006-12-13 张志明 Fire-proof plate for tunnel
CN101344006A (en) * 2008-08-20 2009-01-14 厦门大学 Tunnel fire-proof slab and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1876603A (en) * 2005-06-10 2006-12-13 张志明 Fire-proof plate for tunnel
CN101344006A (en) * 2008-08-20 2009-01-14 厦门大学 Tunnel fire-proof slab and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082845A (en) * 2016-06-13 2016-11-09 秦晨 A kind of building environment-friendly composite material of heat-insulation and heat-preservation and preparation method thereof
CN106082845B (en) * 2016-06-13 2018-05-01 海门市泰利来新型建材有限公司 A kind of building environment-friendly composite material of heat-insulation and heat-preservation and preparation method thereof

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Application publication date: 20131204