Tunnel fire-proof paint

A technology for fire-resistant coatings and tunnels, applied in fire-resistant coatings, cement coatings, etc., can solve problems such as poor weather resistance, long construction period, and easy to fall off, and achieve excellent corrosion resistance and stability, short curing time, and high bonding strength. Effect

Inactive Publication Date: 2008-03-05
彭桦 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicate cementitious materials have poor corrosion resistance, poor penetration resistance, large shrinkage, and easy to return to frost; high-alumina cement cementitious materials have good fire resistance, but due to the unstable microstructure of the material, they are prone to shrinkage, resulting in cracking and peeling off of the coating layer
[0005] As far as the overall situation of the existing tunnel fireproof coating is concerned, there are the following defects: (1) The coating is thick and the heat insulation performance is not good. Generally, the thickness is 20-30mm, and the fire resistance can reach 3h. Due to the large thickness, the construction is difficult and the construction period is long ; In addition, increase the structural load and increase the cost of tunnel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 52.5 # Low-alkalinity sulfoaluminate cement 35kg, expanded perlite 13kg, expanded vermiculite 26kg, kaolin 13kg, aluminum hydroxide 13kg, redispersible rubber powder 8.1kg, melamine 5kg, pentaerythritol 5kg, water reducer 0.2kg, fully mixed Evenly, it becomes the dry powder of the tunnel fireproof coating of the present invention. Add 79.4kg of water and stir evenly. The performance test results are shown in Table 1.

Embodiment 2

[0025] For summer construction: 42.5 # Rapid hardening sulfoaluminate cement 40kg, expanded perlite 12kg, expanded vermiculite 24kg, kaolin 12kg, aluminum hydroxide 8kg, melamine 4kg, pentaerythritol 4kg, redispersible rubber powder 2kg, magnesium hydroxide 6kg, water reducer 0.2kg , auxiliary agent (boric acid) 0.5kg, the raw materials are fully mixed evenly, and it is ready. Add 76.3kg of water and stir evenly. The performance test results are shown in Table 1.

Embodiment 3

[0027] For summer construction: 52.5 # Composite sulfoaluminate cement 30kg, expanded perlite 20kg, expanded vermiculite 35kg, kaolin 5kg, vinylon short fiber 0.5kg, aluminum hydroxide 10kg, magnesium hydroxide 5kg, redispersible rubber powder 10.2kg, water reducer 0.2 kg, auxiliary agent (boric acid) 3kg, mix well, and serve. Add 80.3kg of water and stir evenly. The performance test results are shown in Table 1.

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PUM

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Abstract

The tunnel fireproofing material consists of sulforaluminate cement 30-50 wt%, inorganic heat insulating stuffing expanded perlite 5-30 wt%, expanded vermiculite 13-40 wt%, kaolin 5-15 wt%, aluminum hydroxide 5-20 wt%, magnesium hydroxide 0-25 wt%, diatomite 0-3 wt%, mine slag 0-10 wt%, redispersible glue powder 2-10 wt%, water reducing agent 0.1-2 wt%, expanded fire retardant 0-1 wt%, reinforcing fiber 0-1 wt%, setting retarder 0-5 wt% and setting accelerator 0-3 wt%. The tunnel fireproofing material has the advantages of high water resistance, high weather resistance, high fire resistance, high corrosion resistance, high stability and other advantages.

Description

technical field [0001] The invention relates to a kind of fireproof coating, in particular, relates to a kind of tunnel fireproof coating. technical background [0002] With the rapid development of highway and railway construction, tunnels have become common buildings in modern traffic engineering. With the development of the economy, the scale of my country's traffic engineering construction is getting larger and larger, the number of tunnels is increasing, and the mileage of tunnels is getting longer and longer. Due to the particularity of the tunnel building structure, the environment is relatively airtight, and the traffic density is high. Once a fire breaks out in the tunnel, it is very difficult to extinguish the fire, and most of the tunnel buildings are reinforced concrete structures, which are not resistant to high temperatures. Once a fire occurs, the temperature will increase rapidly. Reinforced concrete Cracks will occur at high temperatures until the strength ...

Claims

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Application Information

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IPC IPC(8): C09D1/06C09D5/18
Inventor 彭桦石宗利
Owner 彭桦
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