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Seepage-proof and fire-proof coating for tunnels

A fireproof coating and tunnel technology, applied in the field of chemical coatings, can solve the problems of short fireproof protection time, long-term coating peeling off, complex construction, etc., and achieve the effect of making up for poor waterproof function, excellent comprehensive performance and good fireproof performance

Inactive Publication Date: 2015-12-30
杨金伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction industry and other related industries, various types of fire-resistant coatings have emerged. Although they can achieve fire protection, the products have disadvantages such as complex construction, long-term coating peeling, and short fire protection time, which are related to people's life safety and fire safety. If you can't be a little sloppy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] An anti-seepage and fireproof coating for tunnels is prepared by mixing the following raw materials according to the weight ratio: 20-30 parts of white cement, 100-105 parts of sulphoaluminate cement, 30-35 parts of Portland cement, bisphenol epoxidized Resin emulsion, 30-35 parts of polyvinyl acid emulsion, 6-8 parts of aluminum hydroxide, 6-8 parts of starch, 4-8 parts of ammonium dichromate, 5-9 parts of light calcium carbonate, 10-15 parts of hydroxypropyl Methyl cellulose, 6-8 parts glass hollow floating beads, 5-9 parts brick moite, 10-14 parts vermiculite, 5-9 parts aluminum stearate, 10-14 parts mica, 10-14 parts clay .

Embodiment 2

[0012] An anti-seepage and fireproof coating for tunnels is prepared by mixing the following raw materials according to the weight ratio: 20-30 parts of white cement, 100-105 parts of sulphoaluminate cement, 30-35 parts of Portland cement, bisphenol epoxidized Resin emulsion, 30-35 parts of polyvinyl acid emulsion, 6-8 parts of aluminum hydroxide, 6-8 parts of starch, 4-8 parts of ammonium dichromate, 5-9 parts of light calcium carbonate, 10-15 parts of hydroxypropyl Methyl cellulose, 6-8 parts of glass hollow floating beads, 5-9 parts of diatomaceous earth, 10-14 parts of vermiculite, 5-9 parts of aluminum stearate, 10-14 parts of mica, 10-14 parts of clay and 5-8 parts of ammonium borate.

Embodiment 3

[0014] The formulas of the above-mentioned examples are all prepared and constructed according to the following methods: (1) Ingredients, mix the paint and water in a ratio of about 0.7, first add a small amount of water while stirring, add the paint, and replenish water in an appropriate amount, and generally stir for 20 minutes to form a thick paste Slurry (2) construction, use a sprayer to spray from the waist of the tunnel from bottom to top, each spraying is 3-7mm thick, and the construction interval is based on the fact that the last coating is basically dry, and so on, until the design thickness is sprayed, After the last spraying, if it needs to be smoothed, use the method of wiping and smoothing.

[0015] The finished products made by the above-mentioned embodiments can all reach the following technical indicators after testing: 1. Sieve rate≤1.0%; 2. Dry density≤580kg / m 3 ;3. Water resistance: h≥24, the coating will not crack, peel off or fall off; 4. Alkali resistan...

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Abstract

The invention discloses a seepage-proof and fire-proof coating for tunnels. The coating is mainly prepared from raw materials in parts by weight as follows through stirring: 20-30 parts of white cement, 100-105 parts of sulfoaluminate cement, 30-35 parts of Portland cement, a bisphenol epoxy resin emulsion, 30-35 parts of a polyvinyl acetate emulsion, 6-8 parts of aluminium hydroxide, 6-8 parts of starch, 4-8 parts of ammonium dichromate, 5-9 parts of light calcium carbonate, 10-15 parts of hydroxypropyl methyl cellulose, 6-8 parts of hollow glass floating beads, 5-9 parts of kieselguhr, 10-14 parts of vermiculite, 5-9 parts of aluminium stearate, 10-14 parts of mica and 10-14 parts of argil. The coating has the good fire-proof performance, has the seepage-proof function, and overcomes the defect that traditional fire-proof coatings have poor water-proof functions; the fire-proof coating is environment-friendly, high in binding property, easy to construct and operate, excellent in comprehensive performance and applicable to fields of traffic tunnels, civil air defenses, underground buildings and the like.

Description

technical field [0001] The invention relates to an anti-seepage and fireproof coating for tunnels, belonging to the technical field of chemical coatings. technical background [0002] In architecture, the cross-sectional area exceeds 30m 2 The underground artificially constructed passage is defined as a tunnel. Tunnels not only undertake the task of transportation, but also function as channels for optical cables, cables, and even oil and water pipelines. Although the reinforced concrete components used as the main building in the tunnel are non-combustible materials, the tunnel fire has the characteristics of a rapid rise in ambient temperature after combustion, a long duration, a large fire range, and difficulties in fire fighting and entry. In a short period of time after the fire broke out, the local temperature of the fire site in the tunnel will rise rapidly to 1000°C. As the temperature continues to rise, the bound water in the concrete will turn into steam and expa...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B111/28C04B111/27
Inventor 杨金伟
Owner 杨金伟
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