JP2613342B2 - Architectural board and wall structure to which it is fastened - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building board and a wall structure to which the board is fastened, and more particularly, to an asbestos slate, a calcium silicate board, a ceramic exterior material, a wood chip cement board, and an ALC.
The present invention relates to an architectural plate having a tiled uneven pattern on the surface of a ceramic inorganic plate, and a wall structure to which the architectural plate is fastened.

[0002]

2. Description of the Related Art Conventionally, bricks or tile-like irregular patterns are compression-molded on the surface of various ceramic-based inorganic raw plates, and minute irregular patterns are formed on the surface of the formed convex portion, thereby producing a brick-like pattern. Japanese Patent Application Laid-Open No. 56-55414 discloses a device that has a natural taste and prevents partial bulging and cracking, or a device that achieves stress distribution in a groove. See JP-A-56-155911.

[0003]

SUMMARY OF THE INVENTION As described above, the inventors of the present invention provide finer irregularities on the surface of a convex portion forming a tile pattern, so that the architectural plate has cracks in addition to the natural taste. It was judged to be highly effective because it could prevent the occurrence of stress and dispersion of stress to some extent, and conducted many experimental studies on them. As a result, it was certainly possible to express the natural taste of brick-like by adding irregularities to the convex part and at the same time to prevent the concentration of stress to some extent, but perceived that certain conditions were necessary. In other words, if such irregularities are partially discontinuous without considering the sheet thickness, stress distribution in the groove may not be achieved and the strength may be degraded by external force from the surface side. Furthermore, the dispersibility of the stress of this type of building board largely depends on the ratio of the direction and the depth of the concave groove formed in the convex portion. It was perceived that the concentration of stiffness occurred locally and the bending strength decreased.

In an experiment, as shown in FIG. 1, the present inventors set an uncured ceramic inorganic plate 1 on a normal press forming machine A, and mounted a template B on an upper plate A1 of the press. Pressing produced several types of test inorganic plates. One is a test building board C1a in which a tile-shaped rectangular convex portion 2 and a groove-shaped concave portion 3 are formed on the surface of the inorganic plate 1, and after curing, 2 mm and 4 mm are applied to the surface of the rectangular convex portion 2 by a router. A plurality of concave grooves 4 having the same depth were formed at the same interval. The other is a test in which a plurality of discontinuous concave and convex patterns 4a are simultaneously compression-molded into the surface of the inorganic plate 1 in addition to the tile-shaped rectangular convex portion 2 and the groove-shaped concave portion 3 in the embossed shape. A building board C2a having a depth of 1 mm, 2 mm, 3 mm, and 4 mm was prepared. Further, for the purpose of comparison, an inorganic plate Da having a flat surface on which neither a concave groove nor a groove-shaped concave part is formed was prepared. Each of the plates C1a, C2a and Da has a thickness t of 12
mm, and the depth t1 of the groove-shaped recess 3 in the plates C1a and C2a was 4 mm. Then, each plate C1a, C2a and D
Was cut into a shape as shown in FIG.
1, C2 and D were adjusted.

As shown in FIG. 2, a test piece is set horizontally, and a load P is applied to the groove-shaped concave portion 3 located substantially at the center, as shown in FIG. The strength was measured. Table 1 and Table 2 show the results.
Shown in Table 1 shows the test results for the test piece C1, that is, the test piece obtained by forming the inorganic plate by compression-molding the concave groove 4 using a router after compression-molding the inorganic plate. As compared to the test piece D having no flat surface and having a flat surface, each of the test pieces C1 has a lower bending strength value. Furthermore, only the groove-shaped concave portion (concave groove depth 0
mm) and those in which the concave grooves were formed, all of the cases in which the concave grooves were formed showed low values, which means that when the concave grooves were formed by cutting, In such a case, there is no particular strength reinforcing effect, and it is rather easy to break. It is understood that when such a material is used as a building material, a problem occurs in wind resistance and loadability.

[0006]

[Table 1]

Table 2 shows the test results of the test piece C2, that is, a test piece in which a discontinuous uneven pattern was simultaneously compression-molded on the convex surface (the area ratio of the uneven pattern was all 2).
5%). Also in this case, as in the case of the test piece C1 in which the concave groove was cut, all the test pieces showed a lower bending strength value as compared with the flat plate D.
Even when comparing the groove-shaped recess only (concave groove depth of 0 mm) with that obtained by further compression-molding the concavo-convex pattern, when the emboss depth is 1 mm to 2 mm, a slight improvement in strength is seen, but there is almost no difference. It can be seen that the strength is clearly reduced when irregularities deeper than 3 mm are formed. From this, the inorganic plate C subjected to such embossing is
It is presumed that the fine irregularities also have no particular strength reinforcing effect.

[0008]

[Table 2]

[0009]

Means for Solving the Problems The inventors of the present invention have repeated experiments based on the above experimental results, and have found that the thickness of the inorganic original plate and the depth and direction of the groove-shaped concave portions have a specific relationship. In some cases, the bending strength can be maintained at substantially the same level as that of a flat plate, and more than 50% of that obtained when only a groove-shaped recess is formed.
He perceived that the bending strength could be increased to some extent, and completed the present invention.

That is, according to the present invention, a tile-shaped rectangular convex portion and a groove-shaped concave portion are compression-molded on the surface of an uncured ceramic-based inorganic plate, and a plurality of tile-shaped rectangular convex portions are formed on the surface of the rectangular convex surface in parallel with the groove-shaped concave portion. In the architectural plate obtained by compression molding the concave groove, the depth t1 of the concave groove is 17% to 40% of the thickness t of the inorganic plate.
%, Preferably about 30%, and the depth t2 of the groove is in the range of 25-100% of the depth t1 of the groove,
A building board is disclosed, preferably characterized by about 50% to 80%.

In the present invention, the architectural plate according to claim 1 is further fastened to the base material with the direction of the plurality of concave grooves formed on the surface of the rectangular convex portion being the same as the direction of the base material. A wall structure characterized by this is also disclosed.

[0012]

The present invention will be described below in detail with reference to examples. First, by using the same press as shown in FIG. 1, a plurality of types of building inorganic boards having the same board thickness (12 mm) were prepared using the same inorganic material as that used to manufacture the test building board C1a or C2a. . One is a surface having a smooth surface (P1), and the other is a groove-shaped recess a corresponding to the groove-shaped recess 3 of the test piece and a convex surface formed between the groove-shaped recesses a. (B) Simultaneously compression molded concave groove b (P2)
A plurality of types were prepared by changing the depths of the groove-shaped concave portions a and the concave grooves b (FIG. 3). That is, the depth t of the groove-shaped recess a
1 is 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm, and the depth of the concave groove b is 0 mm, 1 mm, 2 mm, 3 mm, and 4 m for each depth t1 of the groove concave.
m, 5 mm, and 6 mm were prepared. Further, the concave groove b was prepared to have a constant depth (3 mm) and different directions with respect to the groove concave part a. The area ratio of the concave groove b to the surface area of the convex portion was set to 25% similarly to the above-mentioned test piece C2.

Each of the inorganic plates P is divided into test pieces C1, C
It was cut into a square having the same dimensions as 2 and subjected to the same bending test. The test results are shown in Tables 3 and 4. Table 3 shows the concave grooves b
Are formed in parallel with the groove-shaped recesses a. As can be seen from Table 3, the depth t1 of the groove-shaped recess is 2
mm to 5 mm, that is, about 17% of the plate thickness t = 12 mm
When the depth of the concave groove t2 is in the range of 1 mm to 4 mm, that is, about 25% to 100% of the depth t1 of the groove-shaped concave portion, the bending strength of the groove is not greater than that of the groove. About 10% to 50% as compared with the case without the groove (concave groove depth 0 mm), especially the groove-shaped recess t1 is about 30% of the plate thickness t, and the depth of the concave groove t2 is In the case of about 50% to 80% of the concave portion t1, the bending strength is 40%.
It can be seen that the percentage has increased significantly from 50% to 50%.

[0014]

[Table 3]

Table 4 shows that, among the building boards used in the experiment shown in Table 3, the groove-shaped recessed part t1 was 4 mm, and the concave groove (t2 = 3 mm) was further compressed in the square convex surface in different directions. In the case of molding, the results obtained when a bending test or the like was performed in the same manner as in Table 3 are shown. As can be seen from Table 4, the concave groove of the square convex portion is the groove-shaped concave t1.
The value shows the maximum value when compression molding is performed in parallel with the above, and the value decreases in both the case of the right angle and the case of the inclination to 45 °. That is, it can be seen that when a concave groove is formed in a rectangular convex surface portion in parallel with the groove-shaped concave portion to which stress is applied, the stress applied to the groove portion is significantly dispersed.

[0016]

[Table 4]

A groove having a groove-shaped concave portion of 6 mm, that is, a plate having a thickness corresponding to 50% of the plate thickness t was compression-molded. However, the compression-molded portion was crushed and was not subjected to a strength test. As can be seen from the test results of this example, in a conventionally known inorganic inorganic plate for building, a groove-shaped concave portion formed by cutting into a square convex surface portion and a discontinuity on the surface of the groove-shaped concave portion and the rectangular convex surface portion were discontinuous. In comparison with, for example, an embossed compression-molded uneven pattern having no directivity, the architectural inorganic plate compression-molded according to the present invention is clearly evident by appropriately selecting the depth and direction of the groove-shaped recess. In addition, the strength can be enhanced.

That is, the depth t1 of the groove-like concave portion sandwiching the rectangular convex portion is desirably 17% to 40% of the plate thickness t. If the groove is deeper than this, the plate itself is crushed and the strength is reduced. Shows that the effect of diffusing stress is small. Also,
The depth t2 of the concave groove of the square convex portion is 25% to 10% of t1.
It can be seen that the strength is particularly improved when the material is compression molded to 0%, and that it can be effectively used as an outer wall, a floor material, a roof base material, or the like that can resist external force.

Further, as can be seen from the results shown in Table 4, the construction board according to the present invention is constructed such that the groove-shaped concave portion sandwiching the rectangular convex portion and the direction of the concave groove of the rectangular convex portion are oriented in the direction of the base material. When they are fastened so as to be parallel, the effect of increasing the strength is remarkable, and such a wall structure is particularly effective as a building structure.

[0020]

Industrial Applicability According to the present invention, in addition to being able to express a natural taste by forming an outer surface with a tile pattern, it is possible to obtain a building board made of a ceramic inorganic material having high bending strength and a wall structure using the building board. be able to.

[Brief description of the drawings]

FIG. 1 is a view showing a process of manufacturing a building board according to the present invention.

FIG. 2 is a perspective view showing a state of a bending test.

FIG. 3 is a sectional view of a building plate according to the present invention.

[Explanation of symbols]

 P─ building board, a─ groove-shaped recess, b 凹 部 recessed groove

Claims (2)

(57) [Claims] 1. An architectural board in which a tile-shaped rectangular convex portion and a groove-shaped concave portion are compression-molded on the surface of an uncured ceramic-based inorganic plate, and a plurality of concave grooves are compression-molded on the surface of the rectangular convex portion. And the depth t1 of the groove-shaped recess is equal to the thickness t of the inorganic plate.
And a depth t2 of the groove is in a range of 25% to 100% of a depth t1 of the groove. 2. The building plate according to claim 1, wherein the direction of the plurality of concave grooves formed on the surface of the square convex portion is the same as the direction of the base material, and the plate is fastened to the base material. Wall structure.