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Tunnel fire-proof slab and preparation method thereof

A technology for fireproof boards and tunnels, which is applied in tunnels, fire prevention, tunnel lining, etc., and can solve the problems that the fireproof performance and mechanical properties of tunnel fireproof boards cannot be well balanced, high production costs, and poor flame retardant effects, etc., to avoid Effects of non-uniform fiber dispersion, low smoke generation, and low thermal conductivity

Inactive Publication Date: 2009-01-14
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) The base material of the tunnel fireproof board contains halogen-containing or heavy metal-containing flame retardants. Although the flame-retardant effect is excellent, when the halogen-containing flame retardants are burned, the amount of smoke is large, and corrosive and toxic gas substances are released, while heavy metals inherently toxic
[0010] 2) Traditional tunnel fire-proof panels have a high density, poor flame-retardant effect, and high production costs
[0011] 3) The flame retardant performance and mechanical performance of the tunnel fireproof board cannot be well balanced, and the two will ebb and flow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Calcium carbonate 10.08g, kaolin 14.88g, aluminum hydroxide 30.08g, magnesium hydroxide 10.08g, expanded vermiculite 20.00g, expanded perlite 10.08g, glass fiber 4.68g, PP fiber 0.12g (glass fiber: PP fiber = 40:1), 60.00g of 425# cement were placed in a high-speed disperser and stirred at a high speed to disperse evenly. Pour the stirred slurry into the mold that has been coated with engine oil, tamp, smooth and trim, remove the mold after one day at room temperature, and maintain it for 25 hours under the conditions of ambient temperature 25°C and relative humidity 60% to 70%. Dry it at 100°C±1°C for 4 hours to obtain the finished product.

[0031] Weigh the quality of the prepared tunnel fireproof board, then measure its area, and calculate its surface density by surface density=mass / area to be 1.80 (g / cm 2 ).

[0032] The compressive strength of the sample (sample size: 40mm×40mm×10mm) was measured by electronic universal testing machine WDS according to the stand...

Embodiment 2

[0035] Calcium carbonate 10.08g, kaolin 14.88g, aluminum hydroxide 30.08g, magnesium hydroxide 10.08g, expanded vermiculite 20.00g, expanded perlite 10.08g, rock wool fiber 4.57g, PP fiber 0.23g (rock wool fiber: PP Fiber=20:1), 60.00g of 425# cement were put into a high-speed disperser and stirred at high speed to disperse. After standing still, pour it into a container, add water (96ml in total, the mass ratio of water to mixed powder is 0.6) and stir. Pour the stirred slurry into the mold that has been coated with engine oil, tamp it, smooth it and trim the edges, remove the mold after one day at room temperature, and maintain it for 20 days at an ambient temperature of 25°C and a relative humidity of 60% to 70%. Dry it at 100°C±1°C for 5 hours to obtain the finished product. The detection methods of the surface density, compressive strength and fire resistance of the fireproof board are the same as in Example 1, and the detection results are shown in Table 1.

Embodiment 3

[0037] Calcium carbonate 10.08g, kaolin 14.88g, aluminum hydroxide 30.08g, magnesium hydroxide 10.08g, expanded vermiculite 20.00g, expanded perlite 10.08g, rock wool fiber 4.72g, PP fiber 0.08g (rock wool fiber: PP Fiber=60:1), 60.00g of 425# cement were placed in a high-speed disperser and stirred at high speed to disperse. After standing still, pour it into a container, add water (a total of 96ml, the mass ratio of water to mixed powder is 0.6) and stir in stages. Pour the stirred slurry into the mold that has been coated with engine oil, tamp it, smooth it and trim the edges, remove the mold after one day at room temperature, and maintain it at an ambient temperature of 25°C and a relative humidity of 60% to 70% for 28 Dry it at 100°C±1°C for 3 hours to obtain the finished product.

[0038] The detection methods of the surface density, compressive strength and fire resistance of the fireproof board are the same as in Example 1, and the detection results are shown in Table ...

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Abstract

The invention discloses a tunnel fire-proof plate and a manufacture method thereof, relates to a fire-proof material and provides a fire-proof plate which is characterized by light weight, environment protection, high fire retardance, high intensity, low smoke formation and low toxicity, etc. and is applicable to the use of the tunnel and manufacture technique thereof; the tunnel fire-proof plate consists of base material, a modifying agent, reinforcing fiber and a bonding agent, wherein the base material comprises kaolinite, calcium carbonate, magnesium hydroxide and aluminium hydroxide; the modifying agent is expanded vermiculite and expanded perlite; the reinforcing fiber is the composition of inorganic fiber and polymer fiber; and the bonding agent is cement. All the ingredients are added into a high-speed disperser according to the proportion and dispersed uniformly; water is added and stirring is carried out so as to form paste; reverse mould is carried out; the obtained mixture is demoulded after being placed for one day at the room temperature, then dried after being cured for 20 to 28 days under the condition of 60 percent to 70 percent of relative humidity and the finished product is the tunnel fire-proof plate.

Description

technical field [0001] The invention relates to a fireproof material, in particular to a fireproof board used for tunnel fireproofing. Background technique [0002] Tunnel fireproof board refers to the fireproof board fixed on the inner wall of road tunnel, railway tunnel, subway and urban traffic tunnel, which can improve the fire resistance limit of tunnel structure. It is mainly composed of base material, modifier, adhesive and reinforcing fiber. In the event of a fire, it plays a role in delaying the temperature rise of the reinforced concrete main structure in the tunnel, preventing the collapse of the tunnel caused by bursting and the loss of supporting capacity of the steel reinforcement in the lining. [0003] The fire protection of tunnel structures is mainly divided into four categories, that is, providing additional concrete thickness not included in the structural section, installing sprinkler systems, spraying fire-resistant paint on the tunnel lining, and pasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21F5/00E04B1/94
Inventor 戴李宗谢聪许一婷黄晓平
Owner XIAMEN UNIV
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