JPH0219781B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foam building material in which an intermediate layer made of a filler is provided between the surface of a foam made of foam glass or the like and a glaze layer applied to the surface of the foam, and a foam construction material thereof. This relates to a manufacturing method.

In general, foamed materials such as foamed glass are often used as construction materials because they are lightweight and have good heat insulation and soundproofing properties. However, as shown in Figure 1, there are small pores 2 on the surface of the foam 1 that were formed during molding.
This has the disadvantage that many parts are exposed and the surface shape is uneven, and the appearance becomes poor due to dust adhering to these parts and making them dirty.In addition, water is absorbed through minute penetrations, so The drawback was that it was not durable enough to be used for. For this reason, a glaze as a surface treatment material is applied to the surface of the foam 1,
A building material 4 is provided with a glaze layer 3. However, even though the above glaze closes the pores 2 when applied before firing, as it melts and softens during firing,
Air bubbles contained in the glaze are degassed, especially pores 2
Since there is a large amount of glaze inside, there is a large amount of deaeration, and therefore the area that was blocking pores 2 loses a lot of weight.
As shown in FIG. 1, pinholes 5 and dents 6 were generated on the surface of the glaze layer 3, resulting in an uneven surface shape.

In view of the above-mentioned drawbacks of conventional foam building materials, the present invention has been developed to improve and eliminate these drawbacks. By providing a foamed building material provided with an intermediate layer made of a stopper material and a method for producing the same, it is possible to make the foamed building material have no water absorption or moisture permeability from its surface and a smooth glazed surface. This is what I did.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the foamed building material of the present invention and its manufacturing method will be explained below based on examples shown in the drawings.

FIG. 2 shows a construction material 7 according to the present invention. This building material 7 has an intermediate layer 10 as a sealing material between the surface of a foam 8 made of foam glass or the like and a glaze layer 9 coated on the surface. Therefore, the filling material of the intermediate layer 10 is used to prevent the glaze containing a glassy substance from being significantly reduced in weight within the pores 11 during firing of the glaze, as in the case of the conventional method. The purpose is to make the surface of the glaze layer 9 smooth, to make both the glaze containing a glassy substance and the foam 8 blend together, to contribute to preventing the glaze layer 9 from peeling, and to ensure that the glaze is uniform during application. It is important that the product acts in such a way that it is applied to the skin. Therefore, the components and blending ratio of this filler must be determined by the components and blending ratio of the foam 8 and the glaze. As described above, the filling material of the intermediate layer 10 has important significance in its components and mixing ratio, and in the present invention, a hydraulic substance and aggregate or a mixture of a hydraulic substance and aggregate with a vitreous substance added thereto. Alternatively, a slurry prepared by adding water and, if necessary, an appropriate amount of CMC to the mixture is used as a filler. Examples of the above-mentioned hydraulic substances include cements such as ordinary Portland cement, white Portland cement, alumina cement, fly ash cement, and blast furnace slag cement, and gypsums such as dihydrate gypsum, hemihydrate gypsum, anhydrite gypsum, etc. Examples of such materials include powders of what is commonly called Fukushima silica, which exhibits small thermal changes (particularly volume changes), and examples of glassy materials include frit, glass powder, and shirasu.

Next, a method for manufacturing the foamed building material 7 will be described based on an example showing specific components and mixing ratios of the sealing material.

First, the first example is a mixture of white Portland cement hydraulic material and Fukushima silica aggregate in a weight ratio of hydraulic material: aggregate = 1:2, Furthermore, a slurry-like material obtained by adding and mixing water at a weight ratio of 0.6 to the hydraulic material is used as a sealing material. Further, an appropriate amount of a so-called caking agent CMC is added to these mixtures as necessary. The filler having such ingredients and proportions is applied to the surface of the foam 8 as shown in FIG. An intermediate layer 10 is formed. Note that the intermediate layer 10 is applied smoothly. After that, the foam 8 is left in indoor air for one day and night to harden the filler of the intermediate layer 10, and 100 parts by weight of frit, 5 parts by weight of pigment, and 1% CMC solution are applied on the hardened intermediate layer 10. A glaze layer 9 is provided by spraying a glaze containing 60 parts by weight. This glaze is applied on the intermediate layer 10,
It has appropriate water absorption and wets well with the glaze, making it possible to apply it more uniformly than when directly applying it to the surface of the foam 8. Then, after drying the glaze layer 9, slow heating and slow cooling periods are provided before and after firing, and firing is performed at a temperature and time that does not significantly deform the foamed body 8. Firing temperature and firing time are usually 750℃ and 30℃.
However, it goes without saying that there may be some changes depending on the components of the foam 8 and glaze layer 9 and their mixing ratios. During this firing, the glaze of the glaze layer 9, the filler of the intermediate layer 10, and the surface side of the foam 8 are melted and softened, and the filler of the intermediate layer 10 improves the compatibility between the glaze layer 9 and the foam 8. do. In such a foamed building material 7, the glaze layer 9, the intermediate layer 1
0. The surface side of the foam 8 is melted and softened and then solidified, so there is no water absorption or moisture permeability from the surface, and there is no risk of peeling of the glaze layer 9, and furthermore, the foam 8 itself is lightweight. It has the effect of being excellent in heat insulation and soundproofing properties.

In the second example, a mixture in which the ratio of the amounts of white Portland cement hydraulic substance, glass powder, and Fukushima silica aggregate is 1:1:1, and the weight ratio to the hydraulic substance is The sealing material is a slurry made by adding 0.6 parts of water to the mixture. In the case of this sealing material as well, an appropriate amount of CMC as a caking agent is added to the above mixture as necessary. In this second example, the foamed building material 7 is obtained in the same manner as in the first example.
In this case, during firing after glazing, the glaze of the glaze layer 9,
Since both the filling material of the intermediate layer 10 and the surface side of the foam 8 contain a glassy substance and are melted and softened, the bonding state of these three is better than in the case of the first embodiment. Good. Other effects are the same.

FIG. 3 is a drawing for explaining a manufacturing method for obtaining a tile pattern on the surface of the foam building material 7.
The ingredients and blending ratio of the filler used in this case may be the same as those in the first and second embodiments. The manufacturing method includes applying the filling material of the first or second embodiment to the surface of the foam 8 to form the intermediate layer 10 (see FIG. 2), and then curing it. Then, paraffin, water repellent, etc. 12 is applied to positions corresponding to the joints between the tiles.
Then, by applying the glazes of the first and second embodiments, drying, and firing under the same conditions as in each of the embodiments, a foamed building material 7 having a tile pattern can be obtained.
Also, as the paraffin, water repellent, etc. 12 divides the glaze layer 9 (see FIG. 2) into small pieces, the difference in thermal expansion between the foam 8 and the glaze layer 9 is alleviated, which also applies to each of the above embodiments. Furthermore, there is an advantage that the problem of peeling of the glaze layer 9 is less likely to occur. The other configurations and effects are the same as in each of the above embodiments.

Note that the components and blending ratio of the sealing material used in the present invention are not limited to those in each of the examples described above, and may need to be changed as appropriate depending on the components of the foam 8 and glaze, blending ratio, etc. It is. Further, the shape of the foam 8 is not limited to the above-mentioned embodiments. For example, even if the foam 8 has large irregularities formed on its surface, open pores may be formed on the surface of the irregularities. is exposed, so if the method of the present invention is applied to this, the same effects as in each of the above embodiments can be obtained.

As explained above, according to the present invention, the glaze does not lose weight in the open pores of the foam due to the filler, so pinholes and dents are not formed on the surface of the glaze layer, resulting in an aesthetic appearance. It is possible to obtain a foamed building material that is excellent in both physical and durable properties.
Further, during glazing, the filler applied to the surface of the foam hardens and intervenes, preventing the glaze from spreading and promoting uniform application of the glaze. Furthermore, when firing the glaze, the filler improves the compatibility between the glaze layer and the surface of the foam, and can contribute to preventing the glaze layer from peeling off after firing. Moreover, during firing, the filler, glaze layer, and foam surface melt and soften and then solidify with the pores completely closed, making it possible to obtain a foamed building material with no water absorption or moisture permeability from the surface. It is.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing a part of the glazed surface side of a conventional foam building material, FIG. 2 is a longitudinal sectional view showing a part of the glazed surface side of a foam building material according to the present invention, and FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a foamed building material illustrating a manufacturing method for obtaining a tile pattern on the surface of the foamed building material according to the present invention. 8... Foam, 9... Glaze layer, 10... Intermediate layer, 11... Open pores.

Claims (1)

[Scope of Claims] 1. A foam building material comprising an intermediate layer made of a filler between the surface of a foam made of foam glass or the like and a glaze layer applied to the surface of the foam. 2 A hydraulic substance and aggregate, a mixture of a hydraulic substance and aggregate with a glassy substance added to the surface of a foam made of foam glass, etc., or water and an appropriate amount of CMC added as necessary to the mixture. A slurry-like sealing material is applied to seal the open pores on the surface of the foam, and a glaze is applied on top of the sealing material as an intermediate layer. After that, the foam is formed into a shape that can be put to practical use. A method for producing a foamed building material, which comprises firing at a temperature and time range that does not cause the foam to collapse.