Alkali slag tunnel fireproof coating and use method thereof

A technology for fire-resistant coatings and alkali slag, which is applied in fire-resistant coatings, cement coatings, coatings, etc., can solve the problems of many geopolymer components, complex preparation methods, and cost reduction, and achieve a good low-temperature environment, simple formula, and reduced production. cost effect

Active Publication Date: 2014-12-10
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many geopolymer components in the coating, and the preparati

Method used

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  • Alkali slag tunnel fireproof coating and use method thereof
  • Alkali slag tunnel fireproof coating and use method thereof
  • Alkali slag tunnel fireproof coating and use method thereof

Examples

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Effect test

Embodiment 1

[0031] An alkali slag tunnel fireproof coating, which is prepared by mixing cementing materials, thermal insulation materials and additives as dry materials with water; each component in the dry materials contains cementing materials by weight percentage: alkali slag cement 46.5 %, redispersible latex powder 2.5%, polyvinyl alcohol 2.5%;

[0032] Thermal insulation materials: expanded vermiculite 15.5%, expanded perlite 12.5%, sepiolite 6.5%, hollow floating beads 2%;

[0033] Additives: 3.5% magnesium hydroxide, 8.5% aluminum hydroxide;

[0034] The alkali slag cement is made of 92% slag and 8% sodium hydroxide by weight.

[0035] The using method of the alkali slag tunnel fireproof coating specifically comprises the following steps:

[0036] 1) Basic level cleaning: clean up the floating dust, residue, oil stains, etc. on the surface of the inner wall of the tunnel;

[0037] 2) Spray water to wet: Spray water to wet the surface of the wall, and then dry it until there is ...

Embodiment 2

[0045] A kind of alkali slag tunnel fireproof coating, which is prepared by mixing cementing material, thermal insulation material and additives as dry material with water; each component in the dry material contains cementing material by weight percentage: alkali slag cement 40 %, redispersible latex powder 4%, polyvinyl alcohol 1%;

[0046] Thermal insulation materials: expanded vermiculite 16%, expanded perlite 13%, sepiolite 8%, hollow floating beads 3%;

[0047] Additives: magnesium hydroxide 5%, aluminum hydroxide 10%;

[0048]The alkali slag cement is formulated by blending 85% slag and 15% sodium hydroxide by weight.

[0049] The using method of the alkali slag tunnel fireproof coating specifically comprises the following steps:

[0050] 1) Basic level cleaning: clean up the floating dust, residue, oil stains, etc. on the surface of the inner wall of the tunnel;

[0051] 2) Spray water to wet: Spray water to wet the surface of the wall, and then dry it until there i...

Embodiment 3

[0059] An alkali slag tunnel fireproof coating, which is prepared by mixing bonding materials, thermal insulation materials and additives as dry materials with water; each component in the dry materials contains bonding materials by weight percentage: alkali slag cement 50 %, redispersible latex powder 1%, polyvinyl alcohol 6%;

[0060] Thermal insulation materials: expanded vermiculite 13%, expanded perlite 14%, sepiolite 5%, hollow floating beads 1%;

[0061] Additives: magnesium hydroxide 2%, aluminum hydroxide 8%;

[0062] The alkali slag cement is prepared by blending 95% slag and 5% sodium hydroxide by weight.

[0063] The using method of the alkali slag tunnel fireproof coating specifically comprises the following steps:

[0064] 1) Basic level cleaning: clean up the floating dust, residue, oil stains, etc. on the surface of the inner wall of the tunnel;

[0065] 2) Spray water to wet: Spray water to wet the surface of the wall, and then dry it until there is no clea...

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Abstract

The invention discloses an alkali slag tunnel fireproof coating and a use method thereof. The coating is prepared by mixing an adhesive material, a heat insulation material and an assistant as dry materials with water, and namely the coating is prepared by uniformly mixing redispersible latex powder, polyvinyl alcohol, expanded vermiculite, expanded perlite, sepiolite, hollow floating beads, magnesium hydroxide, aluminum hydroxide and slag, adding a sodium hydroxide solution and stirring till the mixture is uniform; a fireproof layer is formed on the inner side wall body of a tunnel by cleaning a base layer, spraying water for wetting, constructing the fireproof coating, and maintaining. The coating is relatively good in adhesion, fire resistance and anti-freeze-thaw cycle performance, cannot generate toxic or irritant gas in a production process, has the advantage of environmental protection, is suitable for large-scale popularization and application, and has a very good application prospect.

Description

technical field [0001] The invention belongs to the technical field of fireproofing materials for tunnels, and in particular relates to an alkali slag tunnel fireproofing coating and its application method. Background technique [0002] With the vigorous development of tunnel construction, the problem of tunnel fire has become increasingly prominent. The temperature of the tunnel can exceed 1000°C in case of fire, and the reinforced concrete structure will lose its basic performance in this high-temperature environment, resulting in huge loss of life and property. It has been widely used in the engineering field. [0003] Patent (CN103232197A) discloses a tunnel fireproof coating, which is composed of geopolymer, expanded perlite, expanded vermiculite, brucite fiber, sepiolite, hydroxymethyl cellulose, fatty alcohol sulfonate air-entraining agent The geopolymer is composed of silica fume, kaolin, calcium-based bentonite, calcium oxide, sodium carbonate, sodium chloride, so...

Claims

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Application Information

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IPC IPC(8): C09D1/08C09D5/18C09D7/12B05D7/24
Inventor 季韬王文程吴怀中
Owner FUZHOU UNIVERSITY
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