Novel fireproof coating exclusively for tunnel

A fireproof coating and tunnel technology, applied in the field of fireproof coatings, can solve the problems of lack of fireproof performance and inability to produce tunnel fireproof coatings, and achieve the effects of good industrialization prospects, good workability, and sound-absorbing effect

Inactive Publication Date: 2009-11-04
JIANGXI LONGZHENG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with these requirements and standards, there is still a huge gap in the fire protection of tunnels in my country, especially the lack of fire performance that meets the requirements of Class I tunnels specified in my country's GB50016-2006 "Code for Fire Protection Design of Buildings" and GA / T714-2007 "Components High-performance tunnel fire-resistant coatings tested by the tunnel RABT fire-resistant test method stipulated in the "Rapid Heating and Fire Resistance Test Method for Fire Protection Materials", that is to say, my country is currently unable to produce tunnel fire-resistant coatings that meet the above two standards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 42.5# high alumina cement and 42.5# Portland cement 35% (including 42.5# high alumina cement 11.7%, 42.5# Portland cement 23.3%),

[0042] Expanded Vermiculite 22%,

[0043] expanded perlite 7%,

[0044] Mica 4.5%,

[0045] Sepiolite 5.4%,

[0046] Wollastonite powder 4.9%,

[0047] Glass hollow floating beads 3.8%,

[0048] Aluminum hydroxide 4.5%,

[0049] Magnesium Hydroxide 5.5%,

[0050] Polypropylene staple fiber 0.2%,

[0051] Superplasticizer 0.2%,

[0052] Redispersible latex powder 7%.

[0053] After testing the technical performance indicators of Example 1, when the coating thickness is 20mm, the fire resistance limit reaches 4 hours; the bond strength is 0.7Mpa; the dry density is 510 kg / m3, and other indicators comply with GB50016-2006 "Architectural Design Class I tunnels specified in the Fire Protection Code and GA / T714-2007 "Rapid Rising Fire Resistance Test Method for Fire Protection Materials for Components" stipulate the test requirements for...

Embodiment 2

[0055] 42.5# high alumina cement and 42.5# Portland cement 37% (including 42.5# high alumina cement 12.3%, 42.5# Portland cement 24.7%),

[0056] Expanded Vermiculite 17%,

[0057] expanded perlite 10%,

[0058] Mica 5%,

[0059] Sepiolite 6.25%,

[0060] Wollastonite powder 4.5%,

[0061] Glass hollow floating beads 3.5%,

[0062] Aluminum hydroxide 5%,

[0063] Magnesium Hydroxide 5.2%,

[0064] Polypropylene staple fiber 0.3%,

[0065] Superplasticizer 0.25%,

[0066] Redispersible latex powder 6%.

[0067] After testing the technical performance indicators of Example 2, when the coating thickness is 20mm, the fire resistance limit reaches 3.8 hours; the bond strength is 0.8Mpa; the dry density is 525 kg / m3, and other indicators comply with GB50016-2006 "Architectural Design Class I tunnels specified in the Fire Protection Code and GA / T714-2007 "Rapid Rising Fire Resistance Test Method for Fire Protection Materials for Components" stipulate the test requirements fo...

Embodiment 3

[0069] 42.5# high alumina cement and 42.5# Portland cement 39% (including 42.5# high alumina cement 13%, 42.5# Portland cement 26%),

[0070] Expanded Vermiculite 18%,

[0071] expanded perlite 11%,

[0072] Mica 6%,

[0073] meerschaum 4%,

[0074] wollastonite powder 4%,

[0075] Glass hollow floating beads 4%,

[0076] Aluminum hydroxide 3.5%,

[0077] Magnesium Hydroxide 5%,

[0078] Polypropylene staple fiber 0.2%,

[0079] Superplasticizer 0.3%,

[0080] Redispersible latex powder 5%.

[0081]After testing the technical performance indicators of Example 3, when the coating thickness is 20mm, the fire resistance limit reaches 4.3 hours; the bond strength is 0.68Mpa; the dry density is 424 kg / m3, and other indicators comply with GB50016-2006 "Architectural Design Class I tunnels specified in the Fire Protection Code and GA / T714-2007 "Rapid Rising Fire Resistance Test Method for Fire Protection Materials for Components" stipulate the test requirements for tunnel RA...

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Abstract

The invention relates to the fireproof coating technology, in particular to a novel fireproof coating exclusively for tunnel. A high performance tunnel fireproof coating which conforms the requirements of the I type tunnel fire-resistant experimental test of Chinese GB50016-2006 Code for Fire Protection Regulations of Building Design and the tunnel RABT fire-resistant experimental test of GA / T714-2007 Rapid heating Fire-resistant Test Methods of Fire Protection Materials for Structural Elements for protecting a tunnel fire in China are lacked. The invention reaches the above two standards, comprising the following compositions by weight percentage: 30-40% of high alumina cement and Portland cement, 17-26% of expanded vermiculite, 7-13% of expanded perlite, 4.5-8% of mica, 4-10% of meerschaum, 4-10% of wollastonite in powder, 3.5-4.5% of glass microspheres, 3.5-5.8% of aluminum hydroxide, 5-6.2% of magnesium hydroxide, 0.2-0.4% of polypropylene staple, 0.2-0.3% of a high efficiency water reducing agent and 4-10% of redispersible latex powder.

Description

technical field [0001] The invention relates to fireproof paint technology, in particular to a new type of special fireproof paint for tunnels. Background technique [0002] With the development of engineering construction and transportation and the continuous expansion of human production and living needs, various railways, highway traffic tunnels and underground railways (referred to as subways) have developed rapidly. According to statistics, the total length of traffic tunnels in the entire European region exceeded 100 million by 2000. km; in the second national highway census, the total length of highway tunnels above the county level in my country was nearly 5.5 million km, but while road conditions improved, road traffic flow and vehicles and their transport items also changed greatly, which not only increased the number of traffic tunnels fire risk, but also caused many serious fire accidents. [0003] Tunnel fire not only seriously threatens human life and property s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B14/18C04B14/20C04B14/22C04B16/06
CPCC04B28/06C04B2111/28
Inventor 容七英张文臣
Owner JIANGXI LONGZHENG SCI & TECH DEV
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