CN102152532A - Light inorganic fireproof composite material for tunnel - Google Patents
Light inorganic fireproof composite material for tunnel Download PDFInfo
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- CN102152532A CN102152532A CN2008102332947A CN200810233294A CN102152532A CN 102152532 A CN102152532 A CN 102152532A CN 2008102332947 A CN2008102332947 A CN 2008102332947A CN 200810233294 A CN200810233294 A CN 200810233294A CN 102152532 A CN102152532 A CN 102152532A
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Abstract
The invention relates to a light inorganic fireproof composite material for a tunnel. The tunnel is prepared by compounding three layers of materials from insider to outside, wherein the first layer is sprayed with an inorganic fibre fireproof material mainly comprising the main components, such as inorganic fireproof fibre, expanded vermiculite powder particles, expanded graphite powder particles, common silicate cement, and the like; the second layer is a surface fireproofing material mainly comprising the components, such has common silicate cement, mica powder, gypsum, talcum powder, and the like; and the third layer is a fireproof decoration material, namely, a flame-retardant single-side composite aluminum foil. The composite material has high fire endurance. Under the high temperature of a hydrocarbon fire field, the thermal conductivity of the composite material is extremely low, and the fireproof effect of the composite material is favorable.
Description
Technical field
The present invention relates to a kind of fire proofing material, particularly relate to a kind of tunnel lightweight inorganic fireproof composite material.
Background technology
At present, fire proofing material obtains the flameproof protection of more and more widely application, particularly vcehicular tunnel in highway, railway tunnel work.Existing be used for the tunnel fire proofing thermal insulation protection fireproof paint and PLASTIC LAMINATED arranged.Wherein, fireproof paint mainly contains fire-proof coating for tunnels, and PLASTIC LAMINATED has Thistle board, calcium silicate board, hollow lath, glass fiber reinforcement cement board, compound batten, compound big plate etc.These materials respectively have advantage, and weak point is also respectively arranged.Chinese patent 200610020287X discloses a kind of multifunctional light inorganic fire fiber and has expanded layer material, and its component comprises inorganic fire fiber, expanded vermiculite powder, Portland cement, set accelerator, water reducer, thickener and purification and sterilization agent.It is long that this material has fire resistance period, light weight, and high temperature resistant, heat-insulation and heat-preservation, cost are low, and advantages such as antibiotic and sterilizing can satisfy the requirement of construction steel structure flameproof protection admirably, are the flameproof protection of base material tunnel internal but be not suitable for the concrete.This is because one, and a little less than the light, the purification and sterilization agent can not be brought into play the antibiotic and sterilizing effect effectively in the tunnel, its two, can not satisfy in the hydrocarbon fire experimental condition fast of heating up requirement to fire resistance period, its three, surface irregularity, ornamental poor.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, provide a kind of and can satisfy various constructing tunnel requirements, have the tunnel lightweight inorganic fireproof composite material of tunnel fire proofing defencive function admirably again.
Tunnel lightweight inorganic fireproof composite material of the present invention is composited by trilaminate material, and from inside to outside, ground floor is to spray the inorfil fire proofing material, and the second layer is the surface layer fire proofing material, and the 3rd layer is the fire-retardant decorative material.Wherein,
The components based on weight percentage of spraying the inorfil fire proofing material is:
Inorganic fire fiber 20～70,
Expanded vermiculite powder 10～50,
Expanded graphite particles 0～5,
Portland cement 8.5～30,
Set accelerator 0～1,
Water reducer 0～0.5,
Amounts of thickener 0～5.
Wherein, the inorganic fire fiber is the short yarn cutting of basalt continuous fiber, and its length is 0.5～2cm, diameter 4～7 μ m.This fiber coefficient of heat conduction 0.031～0.038W/mK, elastic modelling quantity 9100～11000kg/mm
2, tensile strength is 1.5 times of glass fibre, sound-absorption coefficient 0.9～0.99, water absorption rate are 1% of glass fibre.Serviceability temperature scope-260 ℃～982 ℃, and the acid-alkali-corrosive-resisting ability is strong plays enhancing, fire-resistant, sound-absorbing, effect such as durable in material; Expanded vermiculite powder granularity is 20～40 orders, plays gas collection agent and adiabatic agent in material; The serviceability temperature of expanded graphite particles is 300～3000 ℃, plays the central role of anti-hydrocarbon fire, and has good heat insulating effect; Portland cement is 425#, is mainly adhesion component, forms base material after hardening, and can improve caking property, and glazing at high temperature generates fine and close thermal insulation fire-proof layer, the fire protecting performance of reinforcing material again; Set accelerator is a calcium chloride, mainly plays the accelerated solidification effect, and material can fully be solidified in 6～12 hours, improves efficiency of construction; Water reducer is a gluconic acid sodium salt, can increase the plasticity and the intensity of material, and the stagnant effect of sun is arranged, and postpones initial set and final setting time, does not influence its firmness; Thickener is a clay, and one or both in the organobentonite play thickening power, also have the effect that strengthens adhesive property and fire resistance simultaneously.
The components based on weight percentage of surface layer fire proofing material is:
Portland cement 10～70,
Mica powder 1～20,
Gypsum 9～50,
Talcum powder 1～33,
Surface layer additive 0～6.
Wherein, the mica powder particle diameter is 80～100 orders, is a kind of high-temperature insulation material, the electrical strength height, and specific insulation is big, and dielectric loss and electric durability are good, play the fire-proof and thermal-insulation effect; Gypsum adjustable material hardening time and solidification intensity; Talcum powder mainly plays a part to regulate hardening time and gain in strength; The surface layer additive is a polycarboxylic acids sodium, and main effect is to regulate hardening time and increase levelability.
The fire-retardant decorative layer material is a flame retardant type single face clad aluminum foil.It is to make (going up the compound aluminium strip Aluminum Foil Factory of hamming brocade produces) at clad aluminum foil inner face compacting composite flame-proof viscose glue, have fire-retardant, waterproof, high characteristics such as energy-conservation, smooth surface is smooth, the light reflectivity height is to the tensile strength height, airtight in length and breadth, waterproof, good airproof performance, existing excellent decoration effect has the good flame function again.
In the tunnel lightweight inorganic fireproof composite material of the present invention, the thickness that sprays the inorfil fireproof material layer is 10～30mm, and the thickness of surface layer fireproof material layer is 1～4mm.
The advantage of tunnel lightweight inorganic fireproof composite material of the present invention is, one can satisfy construction requirement moist, that be the tunnel inner wall surface of arched door type fully; Its two, the fire endurance height, the flameproof effect excellence, thermal conductivity is still extremely low under the high temperature of the hydrocarbon fire scene of a fire, in fire the sole mass loss little, fusing and drippage can not appear, the shape that holds its shape, thickness and density; Its three, light weight, dry density is low, only is 430kg/m
3, give inwall extra weightening finish in tunnel little; Its four, good weatherability, can stand for a long time air corrosion and wet environment weather invasion and attack; Its five, sound absorption properties is good, sound-absorption coefficient reaches 0.5, high frequency fall dry obviously, help automobile in the tunnel, train falls dry; Its six, cost is low, construction intensity is little, operating expenses is low, and surfacing is attractive in appearance, decorate properties is good.Be mainly used in the flameproof protection of inner surface of tunnel, also can be used for the flameproof protection of other concrete surface.
The specific embodiment
The embodiment of the invention 1～6 prescription is as shown in table 1.Its manufacture craft is, to at first the tunnel inner wall surface being carried out water-proofing treatment, to spray each component of inorfil fire proofing material then mixes, and by spraying the inorfil fire proofing material: the weight ratio of water=1: 1.2 is mixed with water, be injected into the tunnel inner wall surface with the special-purpose ejecting machine, make its thickness reach 18mm ± 2mm, leave standstill 10 days to substantially dry; Again by the surface layer fire proofing material: the weight ratio of water=1: 6 mixes, at the surface layer fire proofing material of surfacing ground trowelling 1mm thickness; At last, paste flame retardant type single face clad aluminum foil equably in its surfacing immediately, make obtaining tunnel lightweight inorganic fireproof composite material at inner surface of tunnel.Its performance indications are as shown in table 2.
Table 1: the embodiment of the invention 1～6 prescription (kg)
Table 2: the present invention executes example 1～3 performance indications table
Claims (4)
1. a tunnel lightweight inorganic fireproof composite material is characterized in that being composited by trilaminate material, and from inside to outside, ground floor is to spray the inorfil fire proofing material, and the second layer is the surface layer fire proofing material, and the 3rd layer is the fire-retardant decorative material; Wherein,
The components based on weight percentage of spraying the inorfil fire proofing material is:
Inorganic fire fiber 20～70,
Expanded vermiculite powder 10～50,
Expanded graphite particles 0～5,
Portland cement 8.5～30,
Set accelerator 0～1,
Water reducer 0～0.5,
Thickener 0～5;
The components based on weight percentage of surface layer fire proofing material is:
Portland cement 10～70,
Mica powder 1～20,
Gypsum 9～50,
Talcum powder 1～33,
Surface layer additive 0～6;
The fire-retardant decorative layer material is a flame retardant type single face clad aluminum foil.
2. tunnel lightweight inorganic fireproof composite material as claimed in claim 1, the inorganic fire fiber that it is characterized in that spraying in the inorfil fire proofing material is the short yarn cutting of basalt continuous fiber, its length is 0.5～2cm, diameter 4～7 μ m; Expanded vermiculite powder granularity is 20～40 orders; Portland cement is 425#; Set accelerator is a calcium chloride; Water reducer is a gluconic acid sodium salt; Thickener is one or both in clay, the organobentonite.
3. tunnel lightweight inorganic fireproof composite material as claimed in claim 1 is characterized in that the surface layer additive in the surface layer fire proofing material is a polycarboxylic acids sodium.
4. tunnel lightweight inorganic fireproof composite material as claimed in claim 1, the thickness that it is characterized in that spraying the inorfil fireproof material layer is 10～30mm, the thickness of surface layer fireproof material layer is 1～4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102332947A CN102152532A (en) | 2008-12-11 | 2008-12-11 | Light inorganic fireproof composite material for tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102332947A CN102152532A (en) | 2008-12-11 | 2008-12-11 | Light inorganic fireproof composite material for tunnel |
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| CN102152532A true CN102152532A (en) | 2011-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692724A (en) * | 2015-02-13 | 2015-06-10 | 内江市恒世达建材有限公司 | Mechanical pavement brick and preparation method thereof |
| CN105152594A (en) * | 2015-07-03 | 2015-12-16 | 枞阳县天筑新型建筑材料有限公司 | Energy-saving and environmental protection inorganic thermal insulation mortar special for buildings and preparation method thereof |
-
2008
- 2008-12-11 CN CN2008102332947A patent/CN102152532A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692724A (en) * | 2015-02-13 | 2015-06-10 | 内江市恒世达建材有限公司 | Mechanical pavement brick and preparation method thereof |
| CN105152594A (en) * | 2015-07-03 | 2015-12-16 | 枞阳县天筑新型建筑材料有限公司 | Energy-saving and environmental protection inorganic thermal insulation mortar special for buildings and preparation method thereof |
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Addressee: Wang Baishou Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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Addressee: Han Peng Document name: Notification of Publication of the Application for Invention |
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Addressee: Han Peng Document name: Notification of before Expiration of Request of Examination as to Substance |
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Addressee: Wang Baishou Document name: Notification that Application Deemed to be Withdrawn |
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Application publication date: 20110817 |