Adhesive complex tunnel fire-resisting paint

A technology of fire retardant coatings and binders, applied in fire retardant coatings, cement coatings, etc., can solve the problems of high alumina cement cost, unfavorable use of large-scale tunnel fire retardant coatings, etc., to improve the fire resistance limit, reduce heat conduction, reduce The effect of the heating rate

Inactive Publication Date: 2009-04-15
MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

A large number of these patents use high-alumina cement as a binder. Due to the high cost of high-alumina cement, it is not conducive to the large-area use of tunnel fireproof coatings.
How to make tunnel fireproof coating not only reduce the cost but also improve the bonding performance and fire resistance limit of tunnel fireproof coating, and environmental protection, this subject has not been resolved

Method used

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  • Adhesive complex tunnel fire-resisting paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Ordinary Portland cement and high alumina cement (weight ratio: 1:1) 10 kg; expanded perlite, expanded vermiculite and light calcium carbonate (weight ratio: 3:1:1) 50 kg; inorganic mineral fiber 1 kg; 30 kg of magnesium hydroxide and aluminum hydroxide (weight ratio: 3:1); 3 kg of rubber powder; 1.0 kg of superplasticizer, air-entraining agent and expansion agent (weight ratio: 12:1:2). Put the above-mentioned raw materials into a forced mixer and stir evenly. At the construction site, add water according to the weight of the material (the weight ratio of material to water is 1:1), stir it with a forced mixer for 15 minutes, mix it into a mortar with a certain consistency, spray it on the surface of the substrate that has been properly treated, and maintain it at room temperature for 28 days. test.

Embodiment 2

[0022] Ordinary Portland cement and high alumina cement (weight ratio 1:2) 35 kg; expanded perlite, expanded vermiculite and light calcium carbonate (weight ratio 3:2:1) 90 kg; inorganic mineral fiber 4 kg; hydrogen Magnesium oxide and aluminum hydroxide (weight ratio 2:1) 10 kg; rubber powder 5 kg; superplasticizer, air-entraining agent and expansion agent (weight ratio 5:1:1) 3.0 kg. Put the above-mentioned raw materials into a forced mixer and stir evenly. At the construction site, add water according to the weight of the material (the weight ratio is 1:1.5), stir it with a forced mixer for 15 minutes, mix it into a mortar with a certain consistency, spray it on the surface of the substrate that has been properly treated, and test it after 28 days of curing at room temperature.

Embodiment 3

[0024] Ordinary Portland cement and high alumina cement (weight ratio 1:3) 50 kg; expanded perlite, expanded vermiculite and light calcium carbonate (weight ratio 4:2:1) 40 kg; inorganic mineral fiber 10 kg; hydrogen Magnesium oxide and aluminum hydroxide flame retardant system (weight ratio 3.5:1) 5 kg; rubber powder 0.1 kg; high-efficiency water reducer, air-entraining agent and expansion agent (weight ratio 10:1:3) 0.5 kg. Put the above-mentioned raw materials into a forced mixer and stir evenly. At the construction site, add water according to the weight percentage of the material (weight ratio 1:0.8), stir with a forced mixer for 15 minutes, mix it into a mortar with a certain consistency, spray it on the surface of the substrate that has been properly treated, and test it after 28 days of curing at room temperature.

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Abstract

The invention discloses a binder complex tunnel fire protection coating, the components and the parts by weight are as follows: 10 to 50 parts of ordinary portland cement and high alumina cement, 40 to 90 parts of expanded perlite, expanded vermiculite and light calcium carbonate, 1 to 10 parts of inorganic mineral fiber, 5 to 30 parts of flame retardant, 0.1 to 5.0 parts of glue powder and 0.5 to 3.0 parts of water-reducing agent, air entraining agent and expansion agent. The tunnel coating adopts the cement complex, thereby being capable of reducing the cost, improving the binding strength of the fire protection coating and improving the fire-resistance limit of the tunnel fire protection coating; the tunnel fire protection coating does not produce any toxic gas or waste during the construction process and the fire, thereby being environmentally friendly, being widely applicable to the fire protection of roads, railways and subway tunnel constructions and being capable of being used for petrochemical projects, such as firewalls and the like.

Description

technical field [0001] The invention relates to a tunnel fireproof coating, in particular to a tunnel fireproof coating compounded by ordinary portland cement and high alumina cement. Background technique [0002] With the rapid development of the national economy, urban construction is accelerating, and the floating population is increasing rapidly, the construction and improvement of transportation is particularly important. The tunnel is favored by planners and builders for its shortest distance to achieve the goal, the least occupied area, the least damage to the natural environment and landscape, and low cost. However, the tunnel structure is generally made of stones and reinforced concrete. When the temperature rises to 600°C, the strength of the concrete loses more than 50%, and the yield stress of the steel drops to less than 1 / 3 of the yield force at room temperature. When a fire occurs in a tunnel, the temperature is generally above 1000°C. The masonry of the tunn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/06C09D5/18
Inventor 刘军辉仲晓林陈夙杨力
Owner MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION
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