JPH06167090A - Construction method for installing stone veneer - Google Patents

Abstract

PURPOSE:To complete a fixing operation for a short time by filling and solidifying alpha-cyanoacrylate adhesives having specified viscosity in a joining spot of a stone material and a dowel pin. CONSTITUTION:alpha-cyanoacrylate adhesives 11 are used for fixing stone veneers 8, 8' and a dowel pin 10 used for forming outer and inner walls of a building. Then, the adhesives 11 having a main component of alpha-cyanoacrylate including alkyl group of 1-5 carbon atoms is suitable from viewpoint of the fixing time. The alpha-cyanoacrylate adhesives 11 having 500cps or more of viscosity at 25 deg.C is used together with hardening accelerator to shorten further a term of the operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stone paving method used for forming outer and inner walls of a building, and "Dabopin" used for fixing the building stone used in the method.
The present invention relates to a stone-laying method for quickly fixing a stone material using a specific α-cyanoacrylate adhesive and not impairing a beautiful stone appearance, and is widely used in the construction industry.

[0002]

2. Description of the Related Art In recent years, as the interior and exterior of buildings have become more sophisticated and diversified, it has become more common to put various stone materials on the wall surfaces and ceiling surfaces of buildings. These stone-clad construction methods can be roughly divided into a wet construction method in which the space between the concrete skeleton and the stone material is filled with mortar, jet cement, etc., and a dry construction method in which the stone material and the concrete skeleton are simply joined with metal fittings. "Dobopin" is one of the metal fittings used for
There is. This dowel pin forms a part of the angle fastener that connects the stone and the frame in the shape shown in FIG. 10 and the gap between the dowel pin and the dowel hole is usually filled with mortar or epoxy resin. , Dowel pins are fixed to the stone.

However, when an adhesive such as mortar or epoxy resin having a long curing time is used, there is a drawback that the working efficiency is lowered and the construction takes a long time. Further, in the case of an epoxy adhesive or mortar, there is a drawback that a sufficient adhesive force cannot be obtained unless the drill chips remaining in the dowel hole are cleaned and then filled.

Further, most of the epoxy adhesives are room temperature curing type two-liquid mixing types in the field of construction, so that the workability is poor and the inexperienced worker cannot obtain good fixing. was there.

In view of such circumstances, a method of adhering dovopins using a fast-curing α-cyanoacrylate adhesive was examined, but depending on the type of stone, the adhesive penetrates into the stone, There is a problem that the adhesive exudes on the surface of the stone to form "spots", which lowers the value of the stone and also reduces the adhesive strength itself.

[0006]

DISCLOSURE OF THE INVENTION The present invention overcomes the drawbacks of the conventional method of fixing and fixing the dowel pins, and provides a method of simply and quickly completing the fixing work regardless of the type of stone material. It is what

[0007]

Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventors have found that the bonding points of dowel pins are filled and solidified by using an α-cyanoacrylate adhesive having a specific viscosity. As a result, they found that the fixing work can be completed in a short time, and completed the present invention.

That is, the present invention is for fixing stones and dowel pins,
The present invention relates to a stone lining method using an α-cyanoacrylate adhesive having a viscosity of 500 cps or more at 25 ° C.

An example of a stone lining method using dowel pins according to the present invention will be described below with reference to the drawings. A hole for driving the anchor bolt 2 is opened at a predetermined position of the concrete skeleton 1, and the anchor bolt 2 is driven. Next, the bolt 3 is inserted into the anchor bolt, and the bolt is tightened so that the torque value becomes appropriate. Next, the angle fastener 4 is attached to the bolt 3. The angle fastener 4 is fitted with an adjusting bolt 7 for adjusting the stone material so that it is perpendicular to the ground. The secondary plate 6 is temporarily fixed to the angle fastener 4 with bolts 5, and the dowel hole 9,
The position where 9'is opened is determined, and the dowel holes 9 and 9'are made perpendicular to the stones 8 and 8'by using an electric drill. After the α-cyanoacrylate adhesive 11 is injected into the dowel hole 9, the dowel pin 10 is inserted and fixed. After that, the stone material 8 is attached so that the dowel pins are inserted into the holes 12 provided in the secondary plate 6. Furthermore, after applying the α-cyanoacrylate adhesive to the dowel pin upper portion and the dowel hole 9'provided in the stone material 8 ', the stone material 8'is joined from above to complete the attachment of the stone material to the concrete skeleton 1. To do.

In the present invention, the α-cyanoacrylate adhesive used in the above-mentioned stone lining method is characterized by having a viscosity at 25 ° C. of 500 cps or more. The preferred adhesive has a viscosity of 1,000,000 cps. The following are preferable, and more preferable are 1,000 to 300,000 cps.
It has a viscosity of. If the viscosity is less than 500 cps, the adhesive injected or applied to the dowel hole penetrates into the stone and exudes to the stone surface to harden to form stains on the surface. In many cases, the adhesive drips from the hole that opens downward, causing poor adhesion or significantly impairing the appearance of the stone surface.

The α-cyanoacrylate adhesive used in the present invention is an adhesive containing α-cyanoacrylate as a main component, and various products are commercially available. In the present invention, among these commercially available products, Any of those having a viscosity within the above range can be used without any trouble. However, judging from the viewpoint of fixing time, an adhesive containing α-alkyl acrylate having an alkyl group having 1 to 5 carbon atoms as a main component is preferable for the present invention, and an α-cyanoacrylate other than these is contained as a main component. Adhesives should be avoided as they will increase the fixing time. Further, as the α-cyanoacrylate adhesive, a thixotropic agent is more preferably added in an amount of 0.5 to 10 wt% to have thixotropic properties.

When a curing accelerator for the α-cyanoacrylate adhesive is used in combination, the work can be further shortened and the work efficiency can be increased, which is a preferable method. The curing accelerator may be applied to the dowel hole before filling the α-cyanoacrylate adhesive, or may be sprayed after filling the α-cyanoacrylate adhesive.

The stone materials referred to in the present invention include, specifically, natural stone materials such as granites, andesites, sandstones, slate rocks, tuffs, granites, marbles, serpentine rocks, and artificial marble,
Terrazo, Machi Block, Split'n Block, Marmone, Neoparie (Nippon Electric Glass Co., Ltd. trademark) or other artificial stone material, or a composite stone material of these stone materials and resin, metal, glass ceramic, or tile, metal, mortar, etc. It is a material used as a stone made of.

[0014]

The α-cyanoacrylate adhesive with a viscosity of 500 cps or higher at 25 ° C is used to fix the stone and the dovopin, so that the adhesive will not penetrate into the stone and the stone surface will seep and harden. As a result, there are no problems such as forming stains on the surface and impairing the beautiful stone appearance, and there are problems such as adhesive dripping from the downward dowel hole and causing poor adhesion, and significantly impairing the appearance of the stone surface. It will be resolved.

[0015]

The present invention will be described in more detail with reference to the following examples and comparative examples, but the present invention is not limited to these examples.

Example 1 An Italian marble stone material (rough finish) was formed with a dowel hole having a diameter of 4.5 mm by a drill so that the depth was 20 mm. Next, a commercially available α-cyanoacrylate adhesive with a viscosity of 1,500 CPS (Aron Alpha Woodworking V: manufactured by Toagosei Kagaku Kogyo Co., Ltd.) was injected into the dowel hole in an amount of 2 to 3 g, and then a dowel pin having a length of 50 mm was inserted. Inserted and fixed. "Fixed time"
Pressed the dowel pin with his finger, and made it the time until it became stable. Further, the exudation state on the surface was visually observed. The results are shown in Table 1.

Example 2 Using the same stone material and adhesive as in Example 1, a commercially available hardening accelerator for α-cyanoacrylate adhesive (aa setter: manufactured by Toagosei Kagaku Kogyo Co., Ltd.) was used. The fixing time was measured and the surface of the stone material was observed in the same manner as in Example 1 except that the dabopine was sprayed and the α-cyanoacrylate adhesive used in Example 1 was injected after 5 minutes. The results are shown in Table 1.

Examples 3 and 4 Using the α-cyanoacrylate adhesives (manufactured by Toagosei Kagaku Kogyo Co., Ltd.) shown in Table 1, Example 1 or 2 was used.
The results are shown in Table 1.

Comparative Examples 1 and 2 The same procedure as in Example 1 was carried out except that the two-component mixed room temperature curing type epoxy adhesive shown in Table 1 was used as the adhesive, and the results are shown in Table 1.

Comparative Examples 3 to 6 Using the α-cyanoacrylate adhesives (manufactured by Toagosei Kagaku Kogyo Co., Ltd.) shown in Table 1, Example 1 or 2 was used.
The results are shown in Table 1.

[0021]

[Table 1]

Example 5 The procedure of Example 1 was repeated except that the stone material was changed to black granite, and the fixing time and the state of the stone surface were the same as in Example 1.

Example 6 The same procedure as in Example 1 was carried out except that the stone material was changed to white granite, and the fixing time and the state of the stone surface were the same as in Example 1.

Example 7 The same procedure as in Example 1 was carried out except that the stone material was changed to Oni granite, and the fixing time and the state of the stone surface were the same as in Example 1.

Example 8 The same stone material and adhesive as in Example 1 were used to fix the dowel pins, and a pull-out test was carried out after 1 hour. As a result, the stone material, marble, was destroyed.

Comparative Example 7 A pull-out test was conducted in the same manner as in Example 8 using the adhesive used in Comparative Example 2. As a result, the adhesive was in an uncured state and had no strength.

The working time and finish of the stones are evaluated by the fixing time and the condition of the stone surface evaluated by the above means, but the fixing method of the present invention is far superior to the comparative example. It has been shown. That is, it can be seen that the fixing method of the present invention has a fast fixing time of 1 to 12 minutes and is excellent in workability, and the state of the surface of the stone material is good, and the finishing condition is also excellent.

[0028]

Industrial Applicability As described above, the present invention is a method for fixing a stone material that can fix a dowel pin regardless of the material of the stone material and complete the work in a short time, and that does not impair the beautiful appearance of the stone material. When used in combination with an accelerator, the fixing time can be further shortened, and even an inexperienced worker can easily perform the work, so the benefits obtained by using this fixing method are immeasurable. is there.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a stone lining method using dowel pins.

[Explanation of symbols]

 1 Concrete frame 2 Anchor bolt 3 Bolt 4 Angle fastener 5 Bolt 6 Secondary plate 7 Adjustment bolt 8,8 'Stone material 9,9' Dowel hole 10 Dowel pin 11 Cyanoacrylate adhesive 12 hole

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshio Okuyama 1-1 Funami-cho, Minato-ku, Nagoya-shi, Aichi Toagosei Chemical Industry Co., Ltd. Nagoya Research Institute

Claims (1)

[Claims] 1. A masonry construction method characterized in that an α-cyanoacrylate adhesive having a viscosity of 500 cps or more at 25 ° C. is used for fixing stone materials and dovopins.