JP3349376B2 - Prevention of peeling of wet finishing materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing a wet finish applied on the surface of a slab concrete from falling off.

[0002]

2. Description of the Related Art In general, when mortar is applied to skeleton concrete, the applied surface is cleaned and roughened, then a primer is applied thereon, and then the mortar is applied. Rainwater from cracks for a long time,
There was a danger that dust and the like would enter and as a result, the mortar would fall off the concrete surface.

[0003] For example, in Japanese Utility Model Publication No. 57-20727, a thin plate with a female screw sleeve nut is attached to the male screw portion of the cone withdrawal of the form separator in frame concrete, and mortar is applied so as to enclose the thin plate. Then, anchor the thin plate in the mortar,
It tries to improve the adhesion.

[0004]

However, in this method, the thin plate is located at the center of the mortar in the thickness direction, and the thickness of the mortar cannot be said to be sufficiently large. Peeling was likely to occur. That is, the thin plate is made of a material such as a steel plate or plastic, and the thin plate itself has not been given an adhesive property to the mortar.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a thin plate serving as an anchor material itself with an adhesive property to a wet finishing material, thereby further preventing peeling. It is an object of the present invention to provide a method for preventing a wet finish material from falling off so as to enhance the effect.

[0006]

Means for Solving the Problems In order to achieve the above object, the present invention according to claim 1 of the present invention provides a skeleton concrete in which mortar is applied to the surface of the skeleton concrete to finish the surface. In the wet finishing method of
An anchor material consisting of a thin plate having a threaded portion on the back surface and a base sheet integrated with a number of piles raised on the surface is bonded to a concrete-side threaded metal embedded or projected on the surface of the skeleton concrete. , Is screwed through the threaded portion and projects a predetermined amount from the surface of the skeleton concrete.
In out by placing, spalling prevention method inside that rice coated wet-type finish of the sheet to the finishing mortar of the anchor member
The anchor material is a screw fixed to the back of a thin plate.
Through the female thread of the sleeve nut screwed into the male thread of the rod
And being bonded to the separator . Therefore, according to the present invention, the thin plate itself can be used as an anchor of the finishing mortar to the skeleton concrete, and the adhesion between the thin plate and the finishing mortar can be improved via the pile.

[0007]

[0008]

[0009] The invention according to claim 2 of the present invention is characterized in that the concrete-side threaded metal part is an end portion of a separator protruding into a concave portion of a concrete surface which is a trace for extracting a cone. is there.

[0010] The invention according to claim 3 of the present invention is characterized in that the metal screw with concrete side is an embedded cone, an insert or a post-implanted anchor embedded in a concrete surface.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the pile is formed in a loop shape, a mushroom shape or a T-shape on the surface of the base sheet. Alternatively, it is characterized in that it protrudes in a hook shape. Therefore, when the pile having the above shape is once applied in the mortar, the pile has a large resistance to the pulling force in the peeling direction, and the mortar has a high effect of preventing the mortar from peeling off.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG.
(A) the Oite, recesses 1a on the surface layer side of the skeleton concrete 1 is a cone traces coupling the separator 2 for mold is opened, the male screw portion 2a of the end portion of the separator 2 is in the concave portion 1a is exposed are doing.

Prior to the mortar application, an anchor material 3 for preventing peeling is fixed to the surface of the concave portion 1a at the opening position. The anchor material 3 is provided on a back surface of the thin steel plate 4 with a sleeve nut 5 screwed to an end of the separator 2.
And a base sheet 7 made of a fiber or a fibrous net formed by projecting a large number of loop-shaped piles 6 is integrally attached to the surface side of the thin steel plate 4.

Preferably, a mold having the same shape as the concave portion 1a of the cone extraction trace is attached around the sleeve nut, and an adhesive is applied to the surface of the mold to be installed. In this figure, an anchor is installed. After that, the thin steel plate 4
Mortar and other wet finishing materials are injected through holes (not shown).

The metal sheet 4 is screwed completion status of Suribuna' bets 5 of the anchor member 3 having the above configuration is equivalent to the surfaces of the skeleton concrete 1, a state of being protruded multiple pile surface thereof.

After performing the above preparation work, as shown in FIG. 1B, the mortar 8 is plastered, and then the tiles 9 are attached as necessary, thereby completing the surface finishing work.

The hardening of the mortar 8 causes the loops of the pile 6 to bite into the mortar 8, thereby preventing the mortar 8 from peeling off due to the anchor effect.

The recesses 1a are arranged in four rows and columns per 1 m ^2.
Even if the area of the mortar 8 is not large,
The anchor member 3 arranged at the position a is constrained to the wall surface of the skeleton concrete 1 at multiple points.

The above case is suitable when the mortar 8 applied to the surface of the skeleton concrete 1 is a single layer.

FIG. 2 (a), (b) shows a form of implementation of the present invention.

In FIG. 1A, the anchor material 10 is
A sleeve nut 12 having a male screw portion 12a formed on the back surface of the thin steel plate 4 is integrated. The embedded cone 15 is embedded in concrete while being screwed to the end of the separator 2 and is not extracted. It is screwed into a female screw hole of the nut part 14 which is a trace of removal of a mold fastening bolt (not shown). In this figure, the embedding cone is used, but an embedding insert hardware or a post-implanted anchor may be used instead. A base sheet 7 such as a fiber or a fibrous net formed by raising a large number of loop-shaped piles 6 is integrally attached to the front side of the thin steel plate 4 as described above.

As described above, the anchor member 10 can be arranged so as to protrude from the surface of the skeleton concrete 1 by a predetermined amount as shown in the figure in accordance with the amount of screwing into the nut portion 15a.

After the above-mentioned preparation work, first, a base mortar 8a is applied as shown in FIG. Base mortar 8a
The coating thickness is set to the projecting level of the anchor material 10, then the finishing mortar 8b is applied, and the tile 9 is attached as necessary, thereby completing the surface finishing work.

In this case, the thin steel plate 4 restrains the base mortar 8a, and restrains the finishing mortar 8b with the loop of the pile 6, and prevents the mortar 8a, 8b from falling off by the anchor effect of both. .

The above case is suitable when the mortar applied to the surface of the skeleton concrete 1 has a plurality of layers.

In each of the above embodiments, a pile 6 formed in a loop shape is used. However, in the present invention, it is possible to give a shape that produces a resistance force in another pulling direction, for example, a shape such as a mushroom shape, a T shape, or a hook shape. Has a large resistance to the pull-out force, and a spalling prevention effect can be obtained.

It is needless to say that not only the thin steel plate 4 but also a hard plastic sheet can be used.

[0028]

As is apparent from the above description, in the method for preventing the wet finishing material from peeling off according to the present invention, the thin plate constituting the anchor material can be used as an anchor of the finishing mortar for the skeleton concrete, and the pile can be used. Since the adhesiveness between the thin plate and the finished mortar can be improved through this, the effect of preventing spalling can be further enhanced.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) show a method of preventing a wet finish material from falling off.
It is a fragmentary sectional view showing a construction procedure.

[2] (a), it is a partial sectional view showing the construction process in the form of implementation of (b) the present invention.

[Explanation of symbols]

1 Mukuro body concrete 1a recess 2 separator 2a male screw portion 3,10 anchor material 4 steel sheet (thin sheet) 5 Three beech Tsu preparative (female screw portion) 6 pile 7 base sheet 8, 8a, 8b mortar 12 sleeve nut 12a male screw portion 15a nut (Female thread)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruka Ogawa 4-640 Shimoseito, Kiyose-shi, Tokyo Co., Ltd. Inside Obayashi Corporation Technical Research Institute (72) Inventor Ichifusa Mitani 4-640 Shimoseito, Kiyose-shi, Tokyo (72) Inventor Masao Kawahara 1-10-4 Minamidai, Kawagoe-shi, Saitama Prefecture Shock Beton Japan Co., Ltd. (72) Inventor Masayuki Tanaka 1-10-4 Minamidai, Kawagoe-shi, Saitama Shock Beton Co., Ltd.・ Inside of Japan (56) References JP-A-8-158216 (JP, A) JP-A-3-202551 (JP, A) JP-A-8-158215 (JP, A) JP-A-3-2146 (JP, A) U) Shokai Sho 53-141717 (JP, U) Shokai Hei 5-14372 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04F 13/02-13/08 101 E04G 9/10 104

Claims (4)

(57) [Claims] 1. A wet finishing method for skeleton concrete in which mortar is applied to the surface of skeleton concrete to finish the surface, wherein a number of piles having a threaded portion on the back surface and having a raised surface are integrated. An anchor material made of a thin plate to which a base material sheet is adhered is screwed through a threaded portion to a concrete-side threaded metal buried or protruding from the surface of the skeleton concrete, and a predetermined amount is fixed from the surface of the skeleton concrete. Sudden
In out by placing, spalling prevention method inside that rice coated wet-type finish of the sheet to the finishing mortar of the anchor member
The anchor material is a male screw rod fixed to the back of a thin plate.
Through the female thread of the sleeve nut screwed into the thread
Wet type characterized by being bonded to a separator
A method for preventing peeling of finishing materials . 2. The concrete-side threaded metal part is an end of a separator protruding into a concave part of a concrete surface, which is a trace for extracting a cone.
The method for preventing the wet finish from peeling off according to the above. 3. The method according to claim 1, wherein the concrete-side threaded hardware is an embedded cone, an insert or a post-implanted anchor embedded in a concrete surface. Wherein said pile loop on the surface of the substrate sheet, mushroom-like, to any one of claims 1-3, characterized in that is intended to protrude form a T-shaped or hook-shaped A method for preventing the wet finish material from falling off according to the description.