JP2016014269A - Fire resisting method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contribute to prevention of environmental pollution by coating a beam or column of a building with a fireproofing material predominantly composed of waste of coal ash discharged from a thermal electric power plant.SOLUTION: Clinker ash, which is waste of coal ash discharged from a thermal electric power plant, and diatomaceous earth are mixed together under adhesive spray. Additionally, this mixture contains cement and an adjuvant to form a fire resistive covering material 1. The fire resistive covering material 1 coats a beam 3 or column 4 of a building 2 to improve fire resistance and strength, which are required for the building 2.

Description

  The present invention relates to a fireproofing method for various buildings such as buildings such as ordinary houses, amusement parks, parking lots, reinforced concrete buildings, etc., and particularly has the strength required as a fireproof coating material and has a long fireproof time. The present invention relates to a method for fireproofing a building that effectively uses coal ash waste materials discharged from a thermal power plant and helps prevent pollution.

  As a fireproofing method for various buildings such as houses, amusement parks, parking lots, reinforced concrete buildings, etc., conventional fireproof coatings made by mixing cement and coal ash (fly ash) are covered on beams and columns. How to do is known.

  However, this covering material not only has a short fire resistance time but also has a strength required as a fireproof material because fly ash is used.

  Furthermore, a coating material using a pulverized product of flame-retardant polyurethane is also known as a fireproofing method for buildings, but this coating material also has a short fireproof time and has the necessary strength as a coating material. Has the disadvantage of not.

JP 2006-241920 A JP2013-002230A

  Therefore, the subject of the present invention is a fireproofing method for various buildings such as buildings such as general houses, amusement parks, parking lots, reinforced concrete buildings, etc. Is to provide a fireproofing method for buildings that can effectively prevent pollution by effectively utilizing the waste of coal ash discharged from thermal power plants.

  In order to solve the above-described problems, according to the present invention, clinker ash and diatomaceous earth, which are waste materials of coal ash discharged from a thermal power plant, are kneaded under a spray of adhesive, and further cement and an auxiliary agent are added thereto. A fireproof coating material is formed by inclusion, and this fireproof coating material is coated on a desired arbitrary part of the building, for example, a beam or a column, to improve the fire resistance and strength required for the building.

  In the present invention described above, clinker ash, which is a waste material of coal ash discharged from a thermal power plant, and diatomaceous earth are bonded together by an adhesive, and the concavo-convex surface of the clinker ash is smoothed, and further, cement and an auxiliary agent are added thereto. Thus, a fireproof covering material is formed, and this fireproof covering material is coated on a beam or pillar of the building, thereby improving the fire resistance and strength necessary for the building and preventing pollution.

It is sectional drawing showing the state which sprayed the fireproof coating material on the beam or pillar of the building. It is a fragmentary perspective view of the state which covered the fireproof covering material concerning the present invention on the beam of a building. It is a fragmentary sectional view of the state where the pillar of the building was covered with the fireproof covering material according to the present invention. It is another perspective view of the state which covered the fireproof covering material concerning the present invention on the pillar of the building. It is a fragmentary perspective view of the state which covered the fireproof covering material concerning this invention on the folded-plate roof.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

    In FIG. 1, 1 is a fireproof covering material according to the present invention. 60 parts by weight of coal ash (waste material) from a thermal power plant and 1 part by weight of diatomaceous earth are inserted into a rotary granulator, and rotated and kneaded at 60 to 80 rpm with spraying acrylic adhesive. .

    Clinker ash, which is a waste material of coal ash, has an uneven surface on the moon surface.Rotating the granulator while spraying adhesive on the clinker ash causes diatomaceous earth to adhere to the surface of the clinker ash, thereby The ash surface is smooth.

In this way, the surface of the coal ash becomes smooth, that is, the clinker ash surface in the coal ash becomes smooth, and it becomes a fireproof coating material excellent in product stability and heat resistance.

    Since fly ash, which is a waste material of coal ash, has a fine particle shape, the strength required as a fireproof coating cannot be obtained. However, even with the same coal ash waste, clinker ash is most suitable as a refractory coating because it is mostly coarse aggregate. That is, the clinker ash can withstand the high temperature of about 1000 ° C. necessary for the fire resistance test. Furthermore, since clinker ash is a coarse aggregate that allows easy passage of temperature, a manufacturing process that makes it difficult to pass temperature is necessary. Since the surface of the clinker ash coarse aggregate is a lunar surface, water, cement, etc. are contained, resulting in variations in strength and hardening. In order to prevent this variation, the surface of the clinker ash is smoothed with diatomaceous earth.

In this way, the surface of the coal ash becomes smooth, that is, the clinker ash surface in the coal ash becomes smooth, and it becomes a fireproof coating material excellent in product stability and heat resistance. Next, cement and auxiliary materials are inserted into the coal ash thus treated to obtain the fireproof coating material of the present invention.

  Examples of the auxiliary material include alumina (aluminum hydroxide), reinforced glass fibers (for example, glass fiber fibers having a cut length of 15 mm to 20 mm), obsidian, and powdered acrylic resin.

The fireproof covering material 1 according to the present invention described above is coated with iron by adding about 20% by weight of water, and after stirring, for example, mechanical spray coating with a squeeze pump or plastering with a plastering iron. In this case, the thickness is 25 mm, the fire resistance time is 1 hour, 35 mm is the fire resistance time of 2 hours, and 45 mm is the fire resistance time of 3 hours.

  Hereinafter, the present invention will be described in more detail by way of examples.

A fireproof coating material having the following composition was prepared.
Coal ash waste from thermal power plants (clinker ash) 60 weight percent Diatomaceous earth 1 weight percent Obsidian 10 weight percent Alumina (aluminum hydroxide) 10 weight percent Normal Portland cement 15 weight percent Reinforced glass fiber 3.5 weight percent Powdered acrylic resin (Acrylic adhesive) 0.5 weight percent

  First, in the present invention, 60 parts by weight of clinker ash and 1 part by weight of diatomaceous earth are inserted into a rotary granulator and rotated at 60 to 80 revolutions / minute while spraying 0.5 parts by weight of powdered acrylic resin. Knead.

    Next, obsidian, alumina, cement, and reinforced glass fibers are added in the above-mentioned predetermined amounts to obtain the fireproof coating material of the present invention.

The fireproof coating material having the above composition was thoroughly agitated with about 20% by weight of water, and a 25 mm thick mechanical spray finish was applied to the steel beam 3 of the building 2 using a squeeze pump as shown in FIG. . Building 2 withstood an hour of fire. In FIG. 1, 4 is a pillar.

The fireproof coating material having the composition shown in Example 1 was used and stirred well with about 20% by weight of water in the same manner as in Example 1. As shown in FIG. 2, the fireproof covering material is plastered on the beam 3 of the building 2 with a plastering iron.
A fireproof coating material 1 was obtained by applying to 5 mm and finishing. Building 2 withstood the fire for 2 hours.

The fireproof coating material having the composition shown in Example 1 was used and stirred well with about 20% by weight of water in the same manner as in Example 1. As shown in FIG. 3, the fireproof coating material is plastered on the building pillar 4 by plastering with a plastering iron.
A fireproof coating material 1 was prepared by applying to mm. Pillar 4 withstood the fire for 3 hours.

The fireproof coating material having the composition shown in Example 1 was used and stirred well with about 20% by weight of water in the same manner as in Example 1. As shown in FIG. 4, this fireproof covering material is plastered on the pillar 4 of the building by plastering a thickness of 45 mm.
A fireproof coating material 1 was prepared by applying to mm. Pillar 4 withstood the fire for 3 hours.

The fireproof coating material having the composition shown in Example 1 was used and stirred well with about 20% by weight of water in the same manner as in Example 1. This fireproof coating material was applied to the folded plate roof 5 shown in FIG. Folded plate roof 5
Endured a two-hour fire.

Since the present invention uses a fireproof coating material mainly composed of coal ash waste material and cement from a thermal power plant, and contains auxiliary materials, the fire resistance of the building is improved. Effective use of waste materials from thermal power plants prevents pollution and has great industrial applicability.

DESCRIPTION OF SYMBOLS 1 Fireproof covering material 2 Building 3 Beam 4 Pillar 5 Folded plate roof
6 Polyurethane insulation

Claims (4)

  Clinker ash and diatomaceous earth, which are waste materials of coal ash discharged from a thermal power plant, are kneaded under a spray of adhesive, and further cemented and auxiliaries are added to form a refractory coating. A fireproofing method for a building, characterized by covering a desired arbitrary portion of the building and improving the fireproofness and strength required for the building.   The fireproofing method for a building according to claim 1, wherein the auxiliary material is one or more selected from the group consisting of aluminum hydroxide, glass fiber, and powdered acrylic resin. The fireproofing method for a building according to claim 1, wherein the fireproof coating material is coated to a thickness of 25 mm, 35 mm, or 45 mm by spraying or troweling after adding about 20 weight percent of water and stirring. 2. The fireproofing method for a building according to claim 1, wherein a desired arbitrary portion of the building is a beam or a column, or a space between a beam and a wall.

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