JPH07180269A - Stone external facing material - Google Patents

Abstract

PURPOSE:To rationalize a production process for a stone external facing material made of a stone material layer having an array of stone materials and a cast concrete layer, and reduce cost. CONSTITUTION:A hole 11 is formed on the reverse side of a stone material 15 and coated with epoxy resin 12. Then, a bolt end 13 is inserted in the hole 11, while a bolt head being exposed. Concrete 17 is placed and stacked on the reverse side of the stone material 15 so formed, thereby producing a stone external facing material 18. In this case, the hole 11 for inserting a bolt 19 is perpendicular to a stone material reverse side 15 and, therefore, does not need any dedicated device for erecting the bolt 19. Thus, machining accuracy can be ensured. Furthermore, the bolt 19 inexpensive and commercially available is used as an anchor and, therefore, the cost of the material 18 can be reduced. Also, the stone material 15 already has the bolt 19 before placing concrete and the material 15 can be handled more easily at the production process of the material 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stone exterior material having a stone layer in which stones are abutted against each other and a concrete casting layer.

[0002]

2. Description of the Related Art A stone exterior material 18 of this type is made by arranging a large number of stone materials 15 on a flat formwork 20, and arranging concrete 17 on the stone materials 15. An anchor 21 is planted on the back surface of the stone material 15 in order to enhance the peel strength from the concrete casting layer 17.

The anchor 21 is made of thick wire in a ring shape.
It is bent by 70 to 360 degrees, and the left and right ends 22 and 23 are folded back inward by 90 to 120 degrees and faced like a hook. On the back surface 15 of the stone material, hook-shaped tips 2 at both ends of the anchor
Anchor insertion holes 24 having an inclination angle (about 45 degrees) corresponding to the inclination angle of 2.23 are drilled at a rate of two per anchor, and the anchor insertion holes 24 have hooked tips 22.2.
3 is inserted and the anchor 21 is planted.

In a stone material 15 having vertical and horizontal dimensions of 600 mm × 400 mm and a thickness of 10 to 20 mm, as an example, an anchor insertion hole 24 having a hole diameter d of 4 mm and a depth t of 10 mm is formed, and a thickness of 1.6 mm. Is a bent wire, the dimension a between both ends is 30 mm, and the length b of the hook-shaped tips 22 and 23 is 10
4-6 mm anchors 21 are planted for each stone material.

[0005]

[Problems to be Solved by the Invention] Conventional stone exterior material 18
Then, in order to implant the anchor 21, it is necessary to drill the anchor insertion hole 24 by obliquely pointing the drill, but the drill is inclined and the anchor insertion hole 24 is drilled in such a manner. Requires a dedicated drilling device with the drill oriented obliquely, and variations in hole pitch p and hole depth t are likely to occur. In addition, the hole diameter must be made sufficiently larger than the thickness of the hook-shaped tip so that the hook-shaped tips 22 and 23 of the anchor 21 can be easily inserted.

Then, in order to reduce the weight of the stone exterior material 18, the thickness c of the stone 15 is set to be about the same as the thickness of the pottery tile.
When the thickness is about 3 mm, it becomes difficult to secure a constant thickness e from the hole bottom 25 to the surface 26 in terms of variations in processing accuracy.

[0007]

A stone exterior material 18 according to the present invention solves the above-mentioned inconvenience, and an epoxy resin 12 is applied to a hole 11 formed on a back surface of the stone exterior material 18 to fix a bolt tip 13 to the hole. It is configured by placing concrete 17 on the back surface of a stone layer 16 in which a large number of stone materials 15 in which the bolt heads 14 are inserted and projecting are arranged.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 illustrates a cross section of a stone exterior material according to the present invention. The stone material 15 has vertical and horizontal dimensions of 45 mm × 95.
The thickness of the pottery is 13 mm and the thickness of the pottery tile is 13 mm. A hole 11 having a hole diameter of 10.5 mm and a depth of 8 mm is formed on the back surface of the stone material 15.
Epoxy resin adhesive 12 is applied to the hole 11 to make the thickness 10
The tip 13 of the bolt 19 having a length of 30 mm and a length of 30 mm is inserted and adhered.

In the stone exterior material 18, a large number of stone materials 15 in which bolts 19 are planted are arranged so as to abut against a formwork 20 with their bolt heads 14 facing upward, and concrete 17 is placed thereon.
It is made by placing. FIG. 2 illustrates a cross section of the stone exterior material 18 thus produced in a state of being set in the mold 20.

Referring to the case of tiles, the acceptance standard of tile adhesion strength is generally 4 Kgf / cm ² or more, but the 4-week strength of the anchor 19 in the present invention is 1.
It was 4.0 to 18.7 Kgf / cm ² . The 4-week strength when using the conventional anchor 21 is 8.0-2.
It was 6.9 Kgf / cm ² .

[0011]

According to the present invention, since the hole 11 into which the bolt 19 is inserted is vertically formed in the back surface (15) of the stone material, a dedicated device for forming the hole 11 is not required, and a general drilling machine is used. Since the stone material 15 can be processed, and the holes 11 are drilled at a rate of 1 for each anchor bolt, the hole pitch accuracy does not become a problem as in the case of using the conventional anchor 21. Since the holes are drilled vertically instead of diagonally, the accuracy of the hole depth is also secured.

Since the anchor is not a special one but a commercially available bolt 19, a stone exterior material 18 is used.
The cost can be reduced.

Further, the stone material 15 before being set in the formwork 20.
Since the bolts 19 planted in the are glued with the epoxy resin 12, the bolts 19 are grasped and attached to the stone material 15.
Since the stone material 15 can be transported and the stone material 15 can be easily set on the form 20, the manufacturing process of the stone material exterior material 18 is rationalized.

[Brief description of drawings]

FIG. 1 is a sectional view of a stone exterior material according to the present invention.

FIG. 2 is a cross-sectional view of a stone exterior material according to the present invention in a state of being set in a mold.

FIG. 3 is a cross-sectional view of a conventional stone exterior material.

FIG. 4 is a cross-sectional view in a state where it is set in a mold of a conventional stone exterior material.

[Explanation of symbols]

 11 holes 12 epoxy resin 13 bolt tip 14 bolt head 15 stone material 16 stone layer 17 concrete 18 stone exterior material 19 bolt 20 formwork 21 anchor 22 hook-shaped tip 23 hook-shaped tip 24 anchor insertion hole 25 hole bottom 26 surface

Claims (1)

[Claims] 1. A structure in which concrete is placed and laminated on a back surface of a stone layer in which a large number of stone materials in which epoxy resin is applied to the holes formed in the back surface and bolt tips are inserted to project bolt heads are arranged. Stone exterior material.