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Fire-retardant coatings for tunnel, and preparation method

A technology for fire-resistant coatings and tunnels, applied in fire-resistant coatings, cement coatings, etc., can solve the problems of fire resistance, strength, water resistance, acid resistance, and heat and humidity resistance that cannot fully meet the fire protection requirements of tunnels, and achieve the reduction of elastic modulus, Effect of improving water resistance and improving water retention

Active Publication Date: 2007-02-21
五行安全节能科技(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technical products were all developed before 2005. At that time, there was no unified standard for tunnel fireproof coatings in China. Most enterprises produced tunnel fireproof coatings directly referring to GA98-1995 "General Technical Regulations for Prestressed Concrete Floor Slab Fireproof Coatings" to guide production, and some Enterprises refer to the GA98-1995 standard to formulate enterprise standards to guide production
However, there are large structural and environmental differences between the prestressed concrete floor and the tunnel wall. Therefore, the existing technical products cannot fully meet the fire protection requirements of the tunnel in terms of fire resistance, strength, water resistance, acid resistance, and heat and humidity resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 37% of Portland cement, 13% of perlite, 18% of expanded vermiculite, 7% of fly ash hollow floating beads, 3% of wollastonite powder, 15% of clay, 4.8% of light Calcium carbonate, 0.4% cellulose ether, 2% concrete expansion agent, 0.3% rubber powder, and 0.5% polypropylene fiber are put into the V-type forced mixer, and start stirring for 15 minutes to make a powdery mixture. In this embodiment, when the tunnel fireproof coating is prepared at the construction site, the powdery mixture is taken as required and mixed with clean fresh water according to 75% of the weight of the powdery mixture taken, and stirred evenly for 20 minutes to form a thick slurry-like tunnel fireproof coating. The tunnel fire retardant coating is ready to use, and the relevant test items and test results are shown in the attached table.

Embodiment 2

[0030] This embodiment is basically the same as Embodiment 1, only the component percentages and process parameters are adjusted. 35% of Portland cement, 11% of perlite, 17% of expanded vermiculite, 8% of fly ash hollow floating beads, 6% of wollastonite powder, 10% of clay, 6.4% of light Calcium carbonate, 1.2% cellulose ether, 4% concrete expansion agent, 0.6% rubber powder, and 0.8% polypropylene fiber were put into the V-type forced mixer, and started stirring for 16 minutes to make a powdery mixture. In this embodiment, when the tunnel fireproof coating is prepared at the construction site, the powdery mixture is taken as required and mixed with clean fresh water according to 80% of the weight of the powdery mixture taken, and stirred evenly for 21 minutes to form a thick slurry-like tunnel fireproof coating. The tunnel fire retardant coating is ready to use, and the relevant test items and test results are shown in the attached table.

Embodiment 3

[0032] This embodiment is basically the same as Embodiment 1, only the component percentages and process parameters are adjusted. 33% of Portland cement, 12% of perlite, 22% of expanded vermiculite, 6% of fly ash hollow floating beads, 8% of wollastonite powder, 7% of clay, 4.5% of light Calcium carbonate, 1.1% cellulose ether, 5% concrete expansion agent, 0.8% rubber powder, and 0.6% polypropylene fiber were put into the V-type forced mixer, and started stirring for 17 minutes to make a powdery mixture. In this embodiment, when the tunnel fireproof coating is prepared at the construction site, the powdery mixture is taken as required and mixed with clean fresh water according to 80% of the weight of the powdery mixture taken, and stirred evenly for 23 minutes to form a thick slurry-like tunnel fireproof coating. The tunnel fire retardant coating is ready to use, and the relevant test items and test results are shown in the attached table.

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PUM

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Abstract

This invention discloses a method for preparing a tunnel fireproof paint, which is a powdery mixture of rubber powder, portland cement, perlite, expanded vermiculite, fly ashes hollow floating beads, silica powder, argil, light calcium carbonate, cellulose ether, concrete expansion agent and polypropylene fibers. When contacted with water, the rubber powder can be dissolved and form an emulsion. The fireproof paint can be applied by adding a certain ratio of clean water into the powdery mixture and stirring into a paste. The fireproof paint has such advantages as rational formula, simple process, good fireproof property, and easy transportation and storage. The fireproof paint can be used as fireproof coating layer of tunnels and underground architectures.

Description

technical field [0001] The invention relates to a fireproof material, in particular to a fireproof coating sprayed on the surface of a tunnel wall. Background technique [0002] Tunnel is a traffic channel that achieves the shortest distance, occupies less land, and minimizes damage to the natural environment and landscape. Due to the above-mentioned characteristics of the tunnel, the tunnel has become a common building in modern traffic engineering. With the development of the economy, the scale of my country's traffic engineering construction is getting bigger and bigger, and the total length of the built tunnels ranks first in the world. The "2005 Statistical Bulletin on the Development of China's Highway and Waterway Transportation Industry" shows that by the end of 2005, 2,889 highway tunnels had been built nationwide, with a total of 1.527 million meters. meter long railway tunnel. [0003] Due to the particularity of the tunnel building structure, its environment i...

Claims

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Application Information

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IPC IPC(8): C09D1/06C09D5/18
Inventor 范宏沙月华
Owner 五行安全节能科技(江苏)有限公司
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