JPH07279423A - Stopper for buried concrete and combination with buried concrete - Google Patents

Abstract

PURPOSE:To improve waterproof functionality by swelling water-swelling paints and enabling further sealing between the paints and a block body even when the whole or a part of the surface of a stopper for buried concrete is coated with the paints and water intrudes. CONSTITUTION:A stopper B is inserted to buried concrete A used for concrete form execution and closes an opening section, and the whole or a part of the surface of the stopper is coated with water-swelling paints 60. In buried concrete A, in which a joint nut 12 is buried and which is made of concrete or mortar, a form tie (a registered trademark) introducing hole 13 being communicated with the joint nut 12 and having specified length is formed to an abutting surface 11a to forms 1 of a block body 11, a form tie is removed, and the stopper B being inserted into the form tie introducing hole 13 as an opening section 50 and closing the introducing hole 13 is combined with concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper to be inserted into an embedded concrete used for concrete formwork and a combination with the embedded concrete.
A member that connects a round separator that connects the molds facing each other at a predetermined interval and a home tie for supporting the molds, and is a member that connects the molds to each other. TECHNICAL FIELD The present invention relates to a combination of a stopper and an embedded con, which is used for an embedded con with a structure in which a joint nut for connecting a round separator and a home tie is embedded.

[0002]

2. Description of the Related Art Conventionally, in the concrete construction of a concrete, as shown in FIG. 4, for example, a circular separator 2 and a round separator 2 are provided between a pair of molds 1 and 1 which are separated by a predetermined distance and face each other.
The space between the molds 1 and 1 is regulated by interposing the embedded molds 3 and 3 connected to both ends thereof, and the molds 1 and 1 are connected via the home tie 4 to which the embedded molds 3 and 3 are connected. The concrete is placed in a state where the concrete is fixedly supported.

As the embedded contact 3 for connecting the round separator 2 and the home tie 4, a joint nut 4b is embedded inside a tapered block body 4a. After removing the tie 4, the trace holes of the home tie 4 are plugged with a synthetic resin cap, or closed with mortar, concrete, or the like.

In addition to the above-mentioned embedded concrete, there is also provided a type of concrete which is removed after pouring concrete. In this case, the edge of the separator is cut after the concrete is removed, and further the concrete surface is formed. Mortar filling was applied to the trace holes of Kon.

[0005]

However, in the case of having a joint nut, it is difficult to use unless it is easy to introduce a home tie into the joint nut, and in the case of the type that is removed after concrete is poured, There is a problem that the work of the surface of the concrete matrix is very troublesome because it is necessary to cut the tip of the separator after removing it, and further work such as filling mortar in the trace holes of the concrete.

The present invention has been made in view of the above problems, and it is easy to introduce a home tie for a joint nut, has excellent adhesion to a concrete matrix, and effectively prevents water leakage to the inside. It is an object of the present invention to provide a buried-container stopper and a buried-con, which can perform post-processing work after removing the home tie efficiently.

[0007]

As a stopper for an embedded concrete of the present invention for achieving the above object, a stopper for closing an opening by inserting it into an embedded concrete used for concrete formwork construction as in claim 1. In addition, a water-swellable coating material is attached to the whole or a part of the surface.

Further, it is preferable that the stopper is made of concrete or mortar.
Further, in order to combine the stopper with the embedding container, a joint nut for connecting the round separator and the home tie is embedded in the tapered block body having the contact surface with respect to the mold as in claim 3. In an embedded concrete made of concrete or mortar, a home tie introducing hole of a predetermined length communicating with the joint nut is provided on the contact surface of the block body with respect to the mold, and the home tie introducing hole becomes an opening after removing the home tie. A stopper for inserting and closing the container is combined with the above-mentioned con, and this stopper has a water-swellable coating on the entire surface or a part thereof. Good.

[0009]

The stopper for embedded concrete according to the present invention can be inserted into an opening formed by removing the home tie from the embedded concrete after construction of the concrete form, that is, a home tie introduction hole to close the opening. And
Even if water enters from the outside, the water-swellable paint attached to the entire surface or a part of the surface of the stopper absorbs water and swells, so that the airtightness of the stopper insertion part can be increased and the waterproof function can be improved.

Therefore, by combining the above stopper with a concrete or mortar embedded concealment in which a joint nut for connecting a round separator and a home tie is embedded in the inside of a tapered block body having a contact surface for a mold, After removing the home tie, by inserting the stopper into the home tie introduction hole as described above,
Water leakage can be prevented and post-treatment work after removing the home tie can be performed efficiently.

[0011]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 shows a stopper B for an embedded container, which can be inserted into the embedded container A to close the opening 50 of the embedded container A. A water-swellable coating material is attached to the whole or a part of the surface of the stopper B to form a coating film 60.

As the water-swellable paint, a paint base containing a water-swelling polymer substance is suitable, and a paint base made of a synthetic resin or rubber dissolved in a solvent is suitable. Examples of the resin include vinyl resins, acrylic resins, polyurethane resins, epoxy resins, and phenol resins. Examples of water-swellable polymer substances include lower olefin-maleic anhydride copolymers, urea resins and melamine resins. And modified starch such as carboxymethylated starch and cyanoethylated starch, as well as modified polyvinyl alcohol and the like, and examples of rubber include natural rubber, synthetic rubber and regenerated rubber.

Various known water-swellable paints can be used as long as they are water-swellable, that is, they can absorb water and form a water-containing substance when they come into contact with water. FIG. 2 is a sectional view showing a usage state of the embedded concrete A for concrete formwork construction according to the present invention. The embedded component A is composed of a tapered block body 11 and a joint nut 12 embedded inside the block body 11.
A home tie introduction hole 13 having a predetermined length and communicating with the joint nut 12 is formed on one end surface of the.

More specifically, the block body 11 described above.
Is made of the same concrete or mortar as the concrete base material C to be constructed, and is integrally formed by mixing short fibers 70 of carbon fiber, glass fiber, glass wool and nylon fiber as a reinforcing material. In the figure, the whole shape is formed into a substantially truncated quadrangular pyramid, and the narrow surface at one end is a contact surface 11 for the molds 1, 1.
In addition, the wide surface at the other end is formed as the introduction side end surface 11b of the round separator 2. Further, the joint nut 12 has an inner diameter portion 1 of the block body 11 in a state where the collar portion 12a is embedded in the end surface 11b of the block body 11.
It is integrated with 1c. With the above configuration,
At the time of constructing the form, the home tie 4 can be easily connected to the joint nut 12 through the home tie introduction hole 13. After constructing the molds 1 and 1 and pouring concrete, the home tie 4 is removed, and the above-mentioned stopper B is inserted into the home tie introduction hole 13 that becomes the opening 50 to finish it. Surface finishing of the concrete matrix can be easily performed (see FIGS. 2 and 3). Moreover, home tie introduction hole 1
Since there is no joint nut 12 in 3, the stopper is a block body 1 made of concrete or mortar.
Since it is directly inserted into and adhered to 1, it is possible to ensure good adhesion between them.

The shape of the stopper B according to the present invention may be variously changed depending on the shape of the introduction hole of the home tie. Further, the embedded component A using the stopper is not limited to the above-mentioned embodiment, and for example, the block body 11 may be formed in a truncated cone shape, and the home tie introduction hole 13 may be more than the illustrated one. Various design changes can be made within a range that does not change the gist of the present invention, such as forming a large diameter.

[0016]

As described above, according to the embedded concrete stopper of the present invention, the water-swelling coating material is attached to the whole or a part of the surface, and the water-swelling block swells even when water invades. The space between the body 11 and the body 11 can be further sealed, and the waterproof function is improved. In addition, regarding the embedded concrete, a home tie introduction hole of a predetermined length that communicates with the joint nut is formed on the contact surface of the block body with respect to the mold, and there is no joint nut in this home tie introduction hole. It will also be easy to install in tie joint nuts. Then, after the concrete base is driven in and the home tie is removed, the stopper B is inserted into the opening formed by the home tie introduction hole so that the interior of the block can be directly adhered to the home. Post-treatment after tie removal can be performed easily and efficiently.

Further, when the opening 50 after the home tie is removed is filled with the stopper B, the waterproof function can be enhanced as described above, and the entry of water and the like can be prevented more effectively. For this reason, it is possible to effectively prevent water leakage into the inside of the concrete base body, and it is possible to reliably prevent corrosion of the reinforcing bars.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a stopper for embedded contacts according to the present invention.

FIG. 2 is a cross-sectional view showing a usage state of an embedded capacitor.

FIG. 3 is a cross-sectional view in which a stopper is inserted in an embedded container.

FIG. 4 is a cross-sectional view showing an example of construction using a conventional embedded capacitor.

[Explanation of symbols]

 A Embedded plug B Stopper 60 Water-swellable paint film 1 Formwork 2 Round separator 4 Home tie 11 Block body 11a Abutment surface for formwork 12 Joint nut 13 Home tie introduction hole 50 Opening

Claims (3)

[Claims] 1. A stopper, which is inserted into an embedding container used for concrete formwork construction and closes an opening, wherein a water-swellable paint is attached to all or part of the surface. Stopper for con. 2. The stopper for potting cement according to claim 1, wherein the stopper is made of concrete or mortar. 3. A mold of concrete or mortar in which a joint nut for connecting a round separator and a home tie is buried inside a tapered block body having a contact surface with respect to a mold frame. A home tie introduction hole of a predetermined length that communicates with the joint nut is provided on the contact surface with respect to the frame, and a stopper that is inserted and closed in the home tie introduction hole that becomes the opening after removing the home tie is combined with the above con, This stopper has a water-swellable coating applied to the entire surface or a part thereof, which is a combination of a stopper for embedded concrete and an embedded concrete.