JPH0424351A - Pointed joint structure of lightweight concrete plate - Google Patents

Abstract

PURPOSE:To improve the sticking property by connecting the normal surface and the bottom surface of a joint groove by a curved surface with a curvature, while connecting the normal surface of the joint groove and the surface of an ALC plate by a curved surface with a curvature. CONSTITUTION:A pointed joint 2 is formed by providing a joint groove 3 on the surface 1a of an ALC plate 1 at a specific interval, and the joint groove 3 is formed by the bottom surface 3a with a specific depth and width, and the normal surface 3b formed at a specific incline angle. And the surface 1a and the normal surface 3b are connected by an upper curved surface 3c with a specific curvature, while the normal surface 3b and the bottom surface 3a are connected by a bottom curved surface with a specific curvature. As a result, the sticking property of the paint can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to the structure of decorative joints formed on the surface of lightweight concrete plates.

<Prior Art> Buildings have traditionally been constructed in which outer walls are constructed by connecting a plurality of lightweight concrete plates. Some of the lightweight concrete plates have vertical, horizontal, diagonal, or curved decorative joints formed on their surfaces.

When lightweight concrete plates with such decorative joints are used as the exterior wall material of a building, the exterior of the building may be made of brick or
Alternatively, it is possible to give a design like tiling.

As shown in FIG. 4, the joint grooves 52 constituting the decorative joints 51 formed on the lightweight concrete plate are formed by forming a linear slope 54 that is continuous with the surface 53 of the lightweight concrete plate and has a predetermined inclination angle, and A linear bottom surface 55 continuous with the slope surface 54
It is generally composed of: Therefore, the surface 53 and slope 54 of the lightweight concrete plate in the joint groove 52
The tangent to the slope is configured as an edge-like ridge line, and
4 and the bottom surface 55 are also configured as edge-shaped recesses.

Generally, lightweight concrete plates having the joint grooves 52 as described above are connected in one width direction in the longitudinal direction to constitute the outer wall of a building, and this outer wall is painted.

<Problem to be solved by the invention> However, in a joint groove having the above structure, when painted, the ridge line consisting of the surface of the lightweight concrete plate and the slope, and the slope and bottom surface are There is a problem in that it is difficult for paint to adhere to the edge-shaped recesses made up of.

An object of the present invention is to provide a decorative joint structure with improved paint adhesion.

<Means for Solving the Problems> In order to solve the above problems, the decorative joint structure of a lightweight concrete board according to the present invention is a structure of a decorative joint formed on the surface of a lightweight concrete board, which comprises a decorative joint. The slope of the joint groove and the surface of the lightweight concrete plate are connected by a curved surface having a predetermined curvature, and the slope and the bottom of the joint groove are connected by a curved surface having a predetermined curvature. It is.

Effect> According to the above means, the decorative joint formed on the surface of the lightweight concrete plate can be formed by a joint groove formed by a smooth curved surface. Therefore, the adhesion of the paint to the boundary between the lightweight concrete plate and the slope and the boundary between the slope and the bottom surface in the joint groove can be improved.

<Example> An example of a decorative joint structure to which the above-mentioned means is applied will be described below with reference to the drawings.

Fig. 1 is a perspective explanatory diagram of a joint groove, Fig. 2 is a cross-sectional explanatory diagram of a joint groove, and Figs. 3 (a) to (e) are ALs with decorative joints formed.
It is an explanatory view of C board.

FIG. 3 (→ to (e)) shows an ALC board, which is a type of lightweight concrete board, and this ALC board 1 is connected in three longitudinal directions and three width directions to constitute the outer wall of a building. Furthermore, decorative joints 2 having a design function are formed on the surface 1a of the ALC board 1.

That is, in the same figure (a), a straight decorative joint 2 is formed along the longitudinal direction of the ALC board l, and in the same figure (g)), a straight decorative joint 2 is formed along the width direction. This is what I did. In addition, in FIG. 2C, straight decorative joints 2 are formed in the longitudinal direction and the width direction of the ALC board 1. Furthermore, there is a type in which the decorative joints 2 are formed diagonally as shown in FIG.

By forming decorative joints 2 with a decorative design on the surface 1a of the ALC board 1 in this way, it is possible to express a birch-like pattern on the outer wall of a building.

Next, the structure of the decorative joint 2 will be explained in detail with reference to FIGS. 1 and 2.

The decorative joints 2 are constituted by joint grooves 3 formed on the surface 1a of the ALC board 1 at predetermined intervals.

The joint groove 3 has a bottom surface 3a having a predetermined depth and a predetermined width from the surface 1a of the ALC board 1, and a bottom surface 3a and a surface 1a.
The surface 1a and the slope 3b are connected by an upper curved surface 3c having a predetermined curvature, and the slope 3b and the bottom surface 3a is connected to the bottom curved surface 3d having a predetermined curvature.

The width and depth of the bottom surface 3a of the joint groove 3, the inclination angle of the slope 3b, etc. are set from a design standpoint.

Further, the radius of curvature of the upper curved surface 3c in the joint groove 3 is set within the range of R5-R20 from the viewpoint of paint adhesion and releasability. Similarly, the radius of curvature of the bottom curved surface is R1 to RI.
It is set in the range of O.

That is, since the upper curved surface 3c is a surface that coincides with the outer wall surface of the building, there is an earthquake caused by some external force acting on the curved surface 3C.

Therefore, in order to improve the adhesion of the paint and to reduce the peelability of the paint when external force is applied, the upper curved surface 3c is set to have a radius of curvature within the above range. Furthermore, since the bottom curved surface 3d is formed inside the decorative joint 2, there is no possibility that external force will act on the curved surface 3d. Therefore, the bottom curved surface 3d only needs to improve the adhesion of paint, and therefore is set to have a radius of curvature within the above range.

As described above, since there is no edge-shaped part in the joint groove 3 that constitutes the decorative joint 2, when this outer wall is painted, it is possible to apply the paint uniformly to the entire decorative joint 2.

<Effects of the Invention> As explained in detail above, according to the decorative joint structure of a lightweight concrete board according to the present invention, the decorative joint formed on the surface of the lightweight concrete board is formed by a joint groove configured with a smooth curved surface. You can. Therefore, the adhesion of the paint to the boundary between the ALC plate and the slope and the boundary between the slope and the bottom surface in the joint groove can be improved.

Moreover, there is no edge-shaped part in the joint groove, and the entire decorative joint is formed in a curved shape. Therefore, when the outer wall of a building is constructed using this lightweight concrete board, it has characteristics such as being able to give an overall soft impression.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a joint, FIG. 2 is a cross-sectional view of the joint, FIG. 3 is an illustration of an ALC board, and FIG. 4 is a diagram of a conventional technique. 1 is an ALC board, la is a surface, lb is an end surface, 2 is a decorative joint, 3 is a joint groove, 3a is a bottom surface, 3b is a slope, 3c is an upper curved surface, and 3d is a bottom curved surface. Patent applicant: Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] The structure of a decorative joint formed on the surface of a lightweight concrete plate, wherein the slope of a joint groove constituting the decorative joint and the surface of the lightweight concrete plate are connected by a curved surface having a predetermined curvature. A decorative joint structure of lightweight concrete plates in which the surface and the bottom of the joint groove are connected by a curved surface with a predetermined curvature.