JPH0424352A - Joint structure of lightweight concrete plate - Google Patents

Abstract

PURPOSE:To prevent the permeation of rain water by connecting a mormal surface to form a joint and a bottom surface of the joint by a curved surface with a curvature, while connecting the normal surface and the surface of an ALC plate by a curved surface with a curvature, so as to form a filling groove. CONSTITUTION:Along the whole length of the corner between the surface 1a and the end surface 1b in the longitudinal direction of 80 ALC Plate 1, a joint 2 is formed by providing a joint groove 3 which has a designing function and a filling groove 4 to fill a calking agent. And the joint groove 3 is composed of a bottom surface 3a with a specific depth and width from the surface 1a, and a normal surface 3b formed at a specific incline angle. Furthermore, 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 3d with a specific curvature. As a result, the sticking property of the paint can be improved.

Description

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

<Prior Art> Buildings have traditionally been constructed in which outer walls are constructed by connecting a plurality of lightweight concrete plates. In the said building,
By filling the joints of the lightweight concrete plates with caulking agent, we prevent rainwater from seeping into the interior.

In such a lightweight concrete plate, joint grooves 51 as shown in FIG. 5 are formed at the ends in the longitudinal direction. This joint groove has a linear slope 53 that is continuous with the surface 52 of the lightweight concrete plate and has a predetermined inclination angle, and this slope 52.
, a linear bottom surface 54 that is continuous with the bottom surface 54 , and a groove 55 that is continuous with the bottom surface 54 and is filled with caulking agent. The groove 55 is formed at the boundary between the bottom surface 54 and the end surface 56 of the lightweight concrete plate.

In the joint groove 51, the tangent between the surface 52 of the lightweight concrete plate and the slope 53 is configured as an edge-shaped ridgeline, and the tangent between the slope 53 and the bottom 54 is also configured as an edge-shaped recess. .

After constructing the outer wall of the building by connecting lightweight concrete plates having grooves 51 as described above, the outer wall is finished by painting.

<Problem to be solved by the invention> However, in the case of a joint groove having the above structure! ! When coating is applied, there is a problem in that paint is difficult to adhere to the ridgeline formed by the surface and slope of the lightweight concrete plate, and the edge-shaped recess formed by the slope and bottom.

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

Means for Solving the Problems> In order to solve the above problems, the joint structure of a lightweight concrete plate according to the present invention is a structure of a joint formed around a lightweight concrete board, the joint structure comprising: The slope surface and the surface of the lightweight concrete plate are connected by a curved surface having a predetermined curvature, the slope surface and the bottom surface of the joint part are connected by a curved surface having a predetermined curvature, and the bottom surface and the surface of the lightweight concrete plate are connected by a curved surface having a predetermined curvature. It is constructed by forming a groove for filling caulking agent at the boundary with the end face.

<Operation> According to the above means, the joint formed around the lightweight concrete plate can be configured with a smooth curved surface. Therefore, it is possible to improve the adhesion of the paint to the joints, especially the boundary between the surface of the lightweight concrete plate and the slope, and the boundary between the slope and the bottom.

Furthermore, when the outer wall of a building is constructed by connecting lightweight concrete plates, infiltration of rainwater etc. can be prevented by filling the caulking agent through the grooves in the joints.

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

FIG. 1 is a perspective view of the joint, FIG. 2 is a cross-sectional view of the joint, FIG. 3 is an illustration of the ALC board, and FIG. 4 is a diagram of the ALC board in a connected state.

Figure 3 shows ALC, which constitutes a type of lightweight concrete plate.
This ALC board 1 is connected to form the outer wall of a building. Around the ALC board 1, the A
A joint portion 2 having a shape to be described later is formed on the long side of the LC board 1, and the width direction is chamfered. However, AL
The joints 2 formed on the C board 1 are not limited to the above-mentioned directions, and the joints 2 may be formed only in one or both of the longitudinal and width directions of the ALC board 1. Of course.

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

The joint portion 2 is formed between the surface 1a of the ALC board 1 and the end surface 1b in the longitudinal direction.
It is formed over the entire length at a part of the corner formed by the groove, and is composed of a joint groove 3 having a design function and a filling groove 4 for filling with caulking agent.

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 modulus tlj3 formed with a predetermined inclination angle between
b, and is composed of a surface 1a and a slope 3b.
are connected by an upper curved surface 3c having a predetermined curvature, and the slope surface 3b and the bottom surface 3a are connected by a 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 the viewpoint of workability when filling the caulking agent and design.

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 a vibration 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 an 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 joint portion 2, there is no possibility that external force will act on the bottom curved surface 3d.
d only needs to improve the adhesion of the paint, and therefore is set to the radius of curvature within the above range.

Similar to the groove 55 in the prior art, the filling groove 4 is located at the bottom surface 3a.
and the end surface 1b. This filling groove 4 is constituted by a right-angled groove having a predetermined depth and width.

By connecting the ALC plates 1 having joints 2 as described above as shown in FIG. 4 and filling the filling grooves 4 with caulking agent 5, an outer wall is constructed that prevents rainwater etc. from penetrating through the joints. is possible.

Further, since there is no edge-shaped part in the joint part 2, when this outer wall is painted, it is possible to apply the paint uniformly to the entire joint part 2.

<Effects of the Invention> As explained in detail above, according to the joint structure of a lightweight concrete plate according to the present invention, there is no edge-shaped portion in the joint formed around the lightweight concrete plate, and therefore, It is possible to improve the adhesion of the paint to the joints, especially the boundaries between the surface of the lightweight concrete plate and the slope, and the boundaries between the slope and the bottom.

In addition, there are no edge-like parts in the joints, and the entire surface is curved, so when constructing the exterior wall of a building using this lightweight concrete board, it can give a soft visual appearance as a whole. It has the following characteristics.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the joint, Fig. 2 is a cross-sectional view of the joint, Fig. 3 is an illustration of the ALC board, Fig. 4 is an illustration of the ALC board in a connected state, and Fig. 5 is an illustration of the joint. FIG. 2 is an explanatory diagram of a prior art. 1 is the ALC board, 1a is the surface, 1b is the end surface, 2 is the joint part,
3 is a joint groove, 3a is a bottom surface, 3b is a slope, 3c is an upper curved surface, 3d is a bottom curved surface, 4 is a filling groove, and 5 is a caulking agent. Patent applicant: Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] A structure of a joint formed around a lightweight concrete plate, in which a slope constituting the joint and the surface of the lightweight concrete plate are connected by a curved surface having a predetermined curvature, and the slope and the joint are connected by a curved surface having a predetermined curvature. A joint structure for a lightweight concrete plate, in which the bottom surface of the lightweight concrete plate is connected by a curved surface having a predetermined curvature, and a groove for filling a caulking agent is formed at the boundary between the bottom surface and the end surface of the lightweight concrete plate.