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Single-component alkali-activated cement fireproof coating for tunnel and use method thereof

A technology for alkali-activated cement and fire-resistant coatings, applied in cement production, construction material processing, construction, etc., can solve the problems of high cost, inconvenient use of two-component formula, difficult construction, etc., to avoid injury and protect health. , The effect of good wear resistance

Inactive Publication Date: 2020-07-17
福州市宇心建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In engineering applications, the two-component formula is inconvenient to use, so there is an urgent need for a one-component alkali-activated cement tunnel fireproof coating to avoid the disadvantages of high cost and difficult construction, thereby bringing good economic benefits to enterprises and society and environmental benefits

Method used

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  • Single-component alkali-activated cement fireproof coating for tunnel and use method thereof

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Experimental program
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Effect test

Embodiment 1

[0034]A single-component fireproof coating for tunnels, based on the sum of mass percentages of 100%: bonding materials: alkali-activated cement 49.6%, polyvinyl alcohol 1.3%, redispersible latex powder 2.2%; heat-insulating refractory material: expanded vermiculite 16% , expanded perlite 13.5%, sepiolite 8%, hollow floating beads 2.6%; flame retardant material: magnesium oxide 6.8%; the alkali-activated cement, according to the sum of mass percentages 100%: slag: 66.2%; metakaolin: 17.5%; Sodium Carbonate: 8.7%; Calcium Hydroxide: 7.6%.

[0035] The specific steps of the method of use are:

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

[0037] (2) Wetting with water: Use mechanical equipment to properly wet the concrete surface of the second lining of the tunnel, and then dry it until there is no clear water on the surface;

[0038] (3) Preparation of tunnel fireproof coating: first mix the one-comp...

Embodiment 2

[0043] A single-component fireproof coating for tunnels, based on the sum of mass percentages of 100%: bonding materials: alkali-activated cement 45%, polyvinyl alcohol 3%, redispersible latex powder 2.6%; heat-insulating refractory material: expanded vermiculite 20% , expanded perlite 10.9%, sepiolite 9%, hollow floating beads 1.5%; flame retardant material: magnesium oxide 8%; the alkali-activated cement, according to the sum of mass percentages 100%: slag: 65%; metakaolin: 20%; Sodium Carbonate: 7%; Calcium Hydroxide: 8%.

[0044] The specific steps of the method of use are:

[0045] (1) Basic level cleaning: clean up the floating dust, residue and oil stains on the inner surface of the tunnel;

[0046] (2) Wetting with water: Use mechanical equipment to properly wet the concrete surface of the second lining of the tunnel, and then dry it until there is no clear water on the surface;

[0047] (3) Preparation of fire-resistant coating for tunnels: First, mix the one-compon...

Embodiment 3

[0052] A single-component fireproof coating for tunnels, based on the sum of mass percentages of 100%: bonding materials: alkali-activated cement 55%, polyvinyl alcohol 1%, redispersible latex powder 1.2%; heat-insulating refractory material: expanded vermiculite 15.3% , expanded perlite 15%, sepiolite 5%, hollow floating beads 3.5%; flame retardant material: magnesium oxide 5%; the alkali-activated cement, according to the sum of mass percentages 100%: slag: 70%; metakaolin: 15%; Sodium Carbonate: 10%; Calcium Hydroxide: 5%.

[0053] The specific steps of the method of use are:

[0054] (1) Basic level cleaning: clean up the floating dust, residue and oil stains on the inner surface of the tunnel;

[0055] (2) Wetting with water: Use mechanical equipment to properly wet the concrete surface of the second lining of the tunnel, and then dry it until there is no clear water on the surface;

[0056] (3) Preparation of tunnel fire retardant coating: first mix the one-component a...

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Abstract

The invention discloses a single-component alkali-activated cement fireproof coating for a tunnel and a using method thereof. The single-component alkali-activated cement fireproof coating is composedof a bonding material, a heat-insulating refractory material and a flame-retardant material. The bonding material is composed of alkali-activated cement, polyvinyl alcohol and redispersible latex powder; the alkali-activated cement is composed of slag, metakaolin, sodium carbonate and calcium hydroxide. The use method comprises the following steps: uniformly stirring the single-component alkali-activated cement fireproof coating with water according to a mass ratio of 1: (0.7-0.9), then cleaning a base layer, spraying water for wetting, preparing the fireproof coating for the tunnel, and constructing and maintaining the fireproof coating for the tunnel. The coating is convenient to construct, and has the characteristics of good cohesiveness, fire resistance, no toxicity, no odor, low costand the like. According to the invention, slag and other industrial wastes can be efficiently utilized, cost is lowered, obvious economic benefits are obtained, and the coating conforms to the requirements of sustainable development and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical field of tunnel fireproof materials, and more specifically relates to a single-component alkali-activated cement tunnel fireproof coating and its application method. Background technique [0002] According to the "Statistical Bulletin on the Development of the Transportation Industry", as of the end of 2018, there were 17,738 highway tunnels across the country with a total length of 17.2361 million meters, including 1058 super-long tunnels with a total length of 4.7066 million meters. With the development of the economy, more and more tunnel projects are under construction, and the fire protection of tunnels has attracted the attention of the engineering community. At present, spraying tunnel fireproof coatings on the surface of tunnel concrete structures has become a relatively economical and feasible fire prevention measure. Therefore, there is a great demand for tunnel fireproof coatings with the advantages of ...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B7/153E04G21/04C04B111/28
CPCC04B7/153C04B28/08C04B2111/00482C04B2111/28C04B2201/50E04G21/04E04G2021/049C04B24/2623C04B2103/0057C04B14/204C04B14/185C04B14/042C04B18/082C04B22/066Y02P40/10
Inventor 唐晓静易文周骏宇
Owner 福州市宇心建材科技有限公司
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