JPH0339547A - Roofing material, its manufacture, and roofing structure - Google Patents

Abstract

PURPOSE:To obtain the cooling effect of a roofing material by a method in which a porous water-spreading tube is set on the upside of a roofing material consisting of an upper layer of porous ceramics and a lower layer of dense ceramics and a water supply tube is provided to the end of the porous water- spreading tube. CONSTITUTION:A roofing material B1 is made up of an upper layer of porous ceramics 1 and a lower layer and a lapped part which are composed of dense ceramics 2. A porous water-spreading tube 3 is set on the ridge of a roofing R consisting of the roofing materials B1, and a water supply tube system 10 is connected to the end of the tube 3. As the water supply system 10, a water supply tube 11 and a water supply valve 12 are provided and the tube 11 is connected with a powered pump 13 and a water supply tank 14. The radiation of heat from the roofing can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a roofing material, a method for manufacturing the same, and a roofing structure.

B. Conventional technology Excluding some plant products such as straw, thatch, and shingles, conventional roofing materials include ceramic products such as tiles, concrete products, and metal products. It has been used selectively to completely block moisture. That is, rainwater falling on the roof flows down the surface of the roofing material as quickly as possible and is drained to a place other than the roof.

Problems to be solved by the C0 invention Therefore, for example, even if water is artificially rained down on the roof for cooling during high temperatures in the summer, most of it will flow down the surface of the roofing material, so cooling due to the latent heat of evaporation will not be possible. Even if you look forward to it, the effect will only last for a short time.

In addition, because most conventional roofing materials have a smooth surface, they often cause damage to the windows of nearby buildings due to so-called glare, and can also cause unpleasant urban landscapes. It had become.

An object of the present invention is to solve the above-mentioned problems and provide a roofing material made of ceramic having water-retentive properties, a method for manufacturing the same, and a roofing structure.

03 Means for solving the problem Most of the breaking load is borne by a dense ceramic base made from a raw material containing 60% by weight or more of inorganic powder with a diameter of 0.1 mm or less, and inorganic coarse particles with a diameter of 1 mm to 7 mm are A porous ceramic base made from a raw material containing 50% by weight or more provides stable water retention over a long period of time, and by integrally molding these two bases, a roofing material with stable water retention over a long period of time can be obtained.

That is, the roofing material of the first ellipse includes a porous ceramic material provided in the upper layer and a dense ceramic material provided in the lower layer and the continuous portion of the roofing material.

The roofing structure of the second elliptical precept includes a number of roofing materials including a porous ceramic material provided in the upper layer and a dense ceramic material provided in the lower layer and the contiguous portion of the roofing material, The roof includes a porous water pipe provided at least in the upper part of the roof in parallel with the ridge length direction, and a water supply pipe system connected to the end of the water pipe.

The method for producing a roofing material in the third ellipse includes a first step of mixing coarse particles made of an inorganic raw material, fine inorganic heat-fusible particles, and a room-temperature adhesive substance to form a first mixed substance. , a second step of mixing fine particles made of an inorganic raw material and inorganic heat-fusible fine particles to form a second mixed material, a third step of filling the first mixed material into a mold, and thereafter a fourth step of filling the second mixed substance with the second mixed substance, a fifth step of compression molding the same to obtain a molded product, a sixth step of demolding the molded product, a seventh step of drying the molded product, and a seventh step of drying the molded product. and an eighth step of firing the product.

The method for manufacturing a roofing material having the fourth configuration includes a first step of mixing coarse particles made of an inorganic raw material, fine inorganic heat-fusible particles, and a room-temperature adhesive substance to form a first mixed substance; a second step of mixing fine particles made of an inorganic raw material and inorganic heat-fusible fine particles to form a second mixed material; a third step of extruding the second mixed material using an extrusion molding machine; A fourth step of placing the extruded product in a mold, a fifth step of filling the first mixed substance onto the extruded product in the mold, and a sixth step of compression molding the product to obtain a molded product. and a seventh step of demolding the molded product, an eighth step of drying the molded product, and a ninth step of firing the molded product.

88 Effect As illustrated in Formulation P in Table 1, 50% by weight of inorganic raw material coarse particles with a diameter of 1 mm to 7 mm (in Formulation Example P, Cerben with a particle size of 3 mm to 5 mm) is used as a porous ceramic base.
If you use a material containing the above, mix it with a small amount of a material that has a heat-sealing effect (Hatata feldspar in Formulation Example P), form it into a plate shape, and fire it at an appropriate temperature, it will turn into coarse grains. Due to the large number of penetrating pores in the plate, almost uniform water retention is achieved over the entire surface of the plate. Increasing the particle size of raw material coarse particles improves water retention, but the smoothness of the surface of the product plate decreases.
Moreover, when laminated with a dense ceramic base, the required thickness of the porous ceramic base increases. For use as a water-retentive roofing material, the particle size of the coarse particles for the porous ceramic base is preferably 1 mm to 7 mm. In addition, if the coarse grains in the raw material are less than 50% by weight, it will be difficult to obtain sufficient water retention.If two or more types of coarse grains are used, the coarse grains will naturally form a beautiful pattern on the surface during molding. You can get a board with.

As for the dense raw material composition, as illustrated in the first notation B, inorganic powder with a diameter of 0.1 mm or less (in the case of Blend B, 60% of granulated slag, Kingdom pottery stone, and Motoyama Honbushi clay)
It is necessary to contain at least % by weight, and the particle size of the main component is 0.
If it is larger than 1 mm or less than 60% by weight, sufficient breaking strength cannot be obtained.

F. Example Hereinafter, embodiments of the present invention will be explained based on an example shown in the drawings.

Fig. 1 shows a first embodiment B of the roofing material, which has a wave shape, and includes a porous ceramic base 1 provided in the upper layer, a dense ceramic base 2a provided in the lower layer, and a roof continuous thereto. It consists of a dense ceramic base provided in the material overlapping portion 2b.

The manufacturing method (first manufacturing method) of this roofing material B1 is as follows.

According to the formulation shown in Table 1 (column P and column B indicate the raw materials for porous ceramic base 1 and dense ceramic base 2, respectively), the first mixed material corresponding to base 1 and the material corresponding to base 2 were mixed. Make a second mixed substance.

That is, as a first step, coarse particles made of an inorganic raw material, fine inorganic heat-fusible particles, and a room-temperature sticky substance are mixed,
Forming a first mixed substance Next, in a second step, fine particles made of an inorganic raw material, heat-fusible inorganic fine particles, and a room-temperature sticky substance are mixed to form a second mixed substance.

Here, as shown in Table 1, the heat-fusible fine particles include pottery stone,
It corresponds to feldspar and granulated slag, and the room-temperature sticky substance corresponds to clay and water glass. Other inorganic raw material coarse particles correspond to Cerben (ground waste of sanitary ware). These mixed substances are powders, aggregates, or a mixture thereof.

Next, as shown in FIG. 4, in the third step, the first mixed substance is applied to the first mold surface 21 corresponding to the substrate 1 on the lower mold A2 of the press molding die to a thickness of about 20 mm in the side mold A3. Fill it up. Then, using the second mold surface A22 corresponding to the substrate 2 as a guide, excess material is removed using a scraping board (not shown).

In a fourth step, the first mixed material and the second mold surface A22 are filled with a second mixed material to a thickness of about 30 mm.

In the fifth step, in the upper mold A1 of the press molding machine, the molding pressure is 2
Pressure molded to a thickness of 50 kg/cm".

In the sixth step, the molded product was demolded to obtain a molded product.

In the seventh step, this molded product is heated and dried at 150°C.

In the eighth step, the molded product is fired at 1,100° C. for 1 hour.

Next, the roofing structure will be explained. In FIG. 7, a porous water pipe 3 is provided in parallel to the length direction of the ridge of the roof R made of the roofing material, and a water supply pipe system 1 is provided at the end of the water pipe.
0 is connected. A water supply pipe system 10 is provided with a water supply pipe 11 and a water supply valve 12, and a household water supply is connected to the water supply pipe 11.

As another example of the water supply pipe system 10, an electric pump 13 and a water tank 14 are connected to the water supply pipe 11, and a return pipe R3 is connected to the water tank 14 following the roof gutter R1 and vertical gutter R2.

A supply water pipe 15 from the water supply is connected to the water supply tank 14 . A temperature sensor 16 is installed between the lower surface of the roofing material and the roofing board.
is provided, the electrical signal from which is guided to the motor of the pump 13.

Fig. 2 shows a second embodiment B of the roofing material, which is step-shaped, and Fig. 3 shows the third embodiment B, which is a barrel-shaped roofing material.

Moreover, the second manufacturing method is carried out as follows.

1st. The second step is the same as that of the first manufacturing method, and in the third step, the second mixed material is extruded using an extrusion molding machine. placing the extruded product in a mold in a fourth step;
In a fifth step, the first mixed substance is filled onto the extruded product in the mold. In the sixth step, this is compression molded to obtain a molded product. In the seventh step, the molded product is demolded, in the eighth step, the molded product is heated and dried, and in the ninth step, the molded product is fired.

In any of the above cases, the inorganic raw materials that are the main components of porous and dense ceramic base materials include natural raw materials such as silica, feldspar, pottery stone, clay, and shirasu, or tiles, sanitary ware, ceramic pipes, etc. Shredded ceramic products such as shelves and glass, defective ceramic products, used scraps, etc., synthetic raw materials such as alumina, mullite, cordierite, etc. that are normally used as raw materials for ceramics, and slag. Wastes such as fly ash, red mud, garbage incineration ash, sewage/raw sludge incineration ash, and rice husk incineration ash are used.

The firing temperature for the molded product needs to be selected at a temperature that does not cause the main component to lose its shape due to softening, and at the same time allows the heat-sealing acid content in the raw material to soften and melt appropriately and to solidify the main component. Therefore, it depends on the type and composition of the raw materials used, but in order to obtain sufficient fracture resistance as a roofing material, 80
A firing temperature of 0°C or higher is required.

The present invention is not limited to the embodiments and embodiments described above, but includes various modifications without departing from the spirit and scope of the patent.

G5 Effects of the Invention The roofing material of the present invention is formed of a porous material having a water-retentive surface. Therefore, in the roofing structure of the present invention using this, when water is artificially dropped on the roof, a large amount of water is retained in the porous body due to capillarity and adsorption on the surface of the porous body. The latent heat of evaporation of water can be expected to have a cooling effect on roofing materials over a long period of time. Furthermore, during the dry period of winter, the air layer contained in the porous body has a heat retention effect, so that heat dissipation from the roof can be significantly reduced.

Moreover, since the surface is formed by a porous layer with small irregularities, the sun's rays are not reflected in a specific direction, creating a structure with a stable roof that does not reflect glare. It also contributes to improving the urban landscape.

Furthermore, the roofing material of the present invention is a so-called "ceramic" material.
Therefore, by adding pigments, glazes, etc. to the surface material, it is possible to freely color it beautifully and semi-permanently without fading.

Further, by the manufacturing method of the present invention, roofing materials can be easily manufactured.

[Brief explanation of drawings]

Figures 1.2.3 and 1.2.3 respectively show the roofing material of the present invention.
FIG. 4 is a vertical sectional view showing the first embodiment of the manufacturing method, FIG. 5 is a plan view excluding the upper mold, FIG. 6 is a v-■ sectional view, and FIG. It is a front view showing one example of a roofing structure. B,,B2. B. Roofing material,

Claims (4)

[Claims] (1) A roofing material characterized by comprising a porous ceramic base provided in an upper layer and a dense ceramic base provided in a lower layer and a continuous roofing material overlapping part. (2) A large number of roofing materials including a porous ceramic material provided in the upper layer and a dense ceramic material provided in the lower layer and continuous roofing material overlap portion, and at least the upper part of the roof has a ridge length. 1. A roofing structure comprising: a porous water pipe arranged parallel to the direction; and a water supply pipe system connected to the end of the water pipe. (3) A first step of mixing coarse particles made of an inorganic raw material, fine inorganic heat-fusible particles, and a room-temperature adhesive substance to form a first mixed substance; a second step of mixing with heat-fusible fine particles to form a second mixed substance;
A third step of filling the first mixed substance into the mold, a fourth step of subsequently filling the second mixed substance, a fifth step of compression molding this to obtain a molded product, and demolding the molded product. A method for manufacturing a roofing material, comprising: a sixth step of drying the molded product; a seventh step of drying the molded product; and an eighth step of firing the molded product. (4) A first step of mixing coarse particles made of an inorganic raw material, fine inorganic heat-fusible particles, and a room-temperature adhesive substance to form a first mixed substance; a second step of mixing with heat-fusible fine particles to form a second mixed substance;
a third step of extruding the second mixed material using an extruder; and a fourth step of placing the extruded product in a mold.
a fifth step of filling the first mixed substance onto the extruded product in the mold, a sixth step of compression molding the same to obtain a molded product, and a seventh step of demolding the molded product. A method for manufacturing a roofing material, comprising: an eighth step of drying the molded product; and a ninth step of firing the molded product.