JPH094229A - Device and method for stopping spouting of ready mixed concrete - Google Patents

Abstract

PURPOSE: To improve the efficiency of construction, by arranging a plurality of rodlike members, parallel with each other at regular intervals and in plane shape, and by putting comblike bodies to each of which one end sides of rodlike members are connected, in a border between the face of floor concrete and a form for a handrail wall part. CONSTITUTION: A form 56 for a floor face part and a form 58 for a handrail wall part are installed and reinforcing bars 54 are arranged, following which ready mixed concrete 57 for a floor face is placed in the form 56. A plurality of comblike stopping devices 1 are transversely continuously put into the ready mixed concrete 57 along a border between the ready mixed concrete 57 and the form 58, and toward a bottom 5 at the inside section of the form 58, and this state of the stopping devices 1 is held with wires 6. After that, when ready mixed concrete 60 for a handrail wall is placed in the form 58, definite-sized aggregate being mixed in the concrete 60 is prevented from moving since the stopping devices 1 are formed in comblike shape. Furthermore, when the concrete 57 becomes so hard as not to spout by the weight of the concrete 60, the stopping devices 1 are pulled out, and holes formed by their pulling-out are leveled. In this way, the ready mixed concrete 57 for the floor face can be prevented from rising because of its spouting which is generated by a conventional construction method, and its strength can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Alternatively, the present invention relates to a concrete construction of a floor portion which constitutes a balcony or the like and a handrail wall portion which is perpendicular to the floor portion.

[0002]

2. Description of the Related Art As shown in the sectional perspective view of FIG. 4, a veranda or a balcony (hereinafter referred to as "veranda") 51 of a building 50 includes a horizontal floor surface portion 52 and a handrail wall portion 53 perpendicular to the horizontal floor portion 52. , Which may be constructed by a concrete material 55 on which a reinforcing bar 54 connected to a reinforcing bar (not shown) of the building 50 is arranged.

Conventionally, the construction of the veranda 51 and the like is performed on a formwork (hereinafter, abbreviated as "floor formwork") 56 for partitioning the floor part 52, as shown in the longitudinal sectional view of FIG. A concrete (hereinafter abbreviated as "floor surface concrete") 57 is poured into a predetermined amount and cast, and when it is hardened to a certain degree, a formwork for partitioning the handrail wall part 53 (hereinafter, "handrail wall part formwork"). Abbreviated as ".") Injecting fresh concrete (hereinafter abbreviated as "handrail wall ready-mixed concrete") 60 from the upper opening 59 and vibrating it with a vibrator (not shown) to tighten and tighten. It was In addition, 61 is a handrail wall part form 58.
It is a well-known construction auxiliary metal fitting for a separator for keeping a constant interval.

[0004]

However, the above-mentioned conventional construction method has a problem of spouting concrete. That is, since the handrail wall ready-mixed concrete 60 is vertically poured in while the placed floor surface ready-mixed concrete 57 is not completely cured,
A phenomenon in which the upper surface 57s of the floor raw concrete 57 located at the bottom of the handrail wall form 58 is pushed by the weight (arrow a) and the floor raw concrete 57a near the handrail wall form 58 rises ( The arrow b) had occurred.

In order to avoid this, the floor surface concrete 57
However, the handrail wall ready-mixed concrete 60 may be applied after it has completely hardened, but this is not preferable in terms of strength because concretes of each other are not integrated and a boundary is formed.

Therefore, the above-mentioned swelling is inevitable, and a weight is placed on this by a plate or the like (not shown) so that the swelling can be suppressed by some means. Therefore, after that, troublesome work such as leveling the floor surface occurred.

Therefore, the present invention has been made in view of the above-mentioned problems, and by using an instrument having a simple comb-like structure, it is possible to easily blow out the floor fresh concrete near the boundary with the handrail wall form. A spouting stop device for fresh concrete that can be stopped and the construction period can be shortened, and a spouting stop method for fresh concrete.

[0008]

Means for Solving the Problems In order to achieve the above object, a ready-mixed concrete spouting stop of the present invention has a plurality of elongated rod-shaped members of the same length arranged in parallel and in a plane at a constant interval. It is characterized in that one end portion side thereof is connected and integrated to form a comb shape.

A method for preventing spouting of ready-mixed concrete using such a stopper is a construction of a floor surface portion constituting a veranda or a balcony of a building and a handrail wall portion perpendicular to the floor surface portion. In pouring ready-mixed concrete into the partitioning formwork (“handrail wall formwork”), after placing ready-mixed concrete on the formwork partitioning the floor surface part (“floor surface formwork”), the concrete surface and handrail A comb-shaped body formed by arranging a plurality of elongated rod-shaped members in parallel with each other along the boundary with the wall form is held in a state of being inserted into the fresh concrete. It is characterized by pouring ready-mixed concrete into the frame.

Further, the comb-like body is inserted into the ready-mixed concrete so as to face the bottom of the handrail wall form with an appropriate inclination angle with respect to the floor form.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific examples of a concrete spouting stopper (hereinafter, simply referred to as "stopper") according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall perspective view showing an example of a stopper according to an embodiment, and FIG. 2 is an overall perspective view showing a stopper according to another embodiment. The stopper 1 has a plurality of elongated rod-shaped members 2 (nine in this embodiment) of the same length arranged in parallel and in a plane at a constant interval, and these are connected at one end by a connecting member 3. They are connected integrally and are formed into a comb shape.

The tip end 2t of the rod-shaped member 2 is sharpened to some extent, and is formed of, for example, resin or metal, or a stainless material or the like to prevent rust. The dimension is set to a diameter of 10 mm for resin (or 6 mm for metal) and a length of 500 mm. The shape and dimensions are appropriate, and it is sufficient that the rod-shaped member 2 can be easily inserted into ready-mixed concrete and that the strength can be ensured so that bending does not occur at the time of insertion.

The rod-shaped members 2 are arranged in parallel and in a plane at a constant interval, and the interval is set to about 30 mm in the above set dimension. This interval is appropriately set in consideration of making it difficult for aggregates such as stones to be mixed with ready-mixed concrete to pass through.

The rod-shaped members 2 arranged in this way,
.. are connected and integrated at one end (upper end in the drawing). This connection is performed by welding one end side of the rod-shaped member 2 to the connection member 3 arranged in a plate shape made of metal and surrounding the rod-shaped member end surface 2e. With such a configuration, it is configured in a comb shape.

The main purpose of the present invention is that it is formed in a comb shape, and the connecting mode is not the gist. Therefore, as shown in FIG. 2, the connection of the stopper 10 is fixed at the upper end of the rod member 12. The two rod-shaped members (which may be the same as the rod-shaped member 12) 13 and 13 are connected to each other with an interval of, and the upper end portion thereof may be covered with the cover body 14 so as to wrap the connecting member 13. . This cover body 14 can hold the stopper 10 by holding this portion, and avoids a hazard to the worker due to contact of the tip portion 12e or the like when handling the stopper 10.

[0017]

[How to Use the Stoppers] The stoppers 1 and 10 having the above-mentioned configurations are used by the following working method. As shown in the longitudinal sectional view of FIG. 3, first, the floor surface form 56, the handrail wall form 58 are installed and the reinforcing bars 54 are arranged in accordance with the procedure of the conventional work method. Then, the floor surface concrete mixture 57 is poured and cast into the sectioned area of the floor surface form frame 56. Up to this point, it is the same as the above-mentioned conventional example.

Next, the floor surface concrete 57 and the handrail wall form 58
A plurality of the stoppers 1 (or 10) are continuously inserted along the boundary 4 and the bottom 5 in the compartment of the handrail wall form 58. In addition, the stopper 1 is inserted as in the above-mentioned conventional example by using the floor fresh concrete 5
There is no need to wait until 7 is semi-cured.

This insertion is carried out with a constant inclination angle θ so that the bottom 5 is reached, and the stopper 1 is kept in this state by the support wire 6 or the like hooked on the handrail wall form 56 or the like. To do so.

After this, as in the conventional process, the handrail wall raw concrete 60 is poured from the upper opening 59 of the handrail wall form 58. At this time, since the stopper 1 has a comb-like shape, the aggregate such as stones having a predetermined particle size mixed in the fresh concrete is prevented from moving, while only the moisture passes through to the floor surface raw concrete. Move to 57.

Finally, the floor surface raw concrete mix 57 is the handrail wall raw concrete mix 6
When the hardness is 0 and it does not blow out,
Pull out the stopper 1. This pull-out is done on the floor
Since it is not completely hardened and is performed in a soft state, it can be easily performed, and the holes left behind can be easily contracted and the surface can be evened easily.

[0022]

[Effect] Since the present invention is configured as described above,
The following effects are obtained. That is, since the stopper 1 has a comb shape, the movement of aggregates such as stones having a predetermined particle diameter mixed in the fresh concrete is prevented. Therefore, it is possible to prevent the swelling of the floor surface raw concrete due to the jetting, which has occurred in the conventional method.

On the other hand, since the liquid component passes through between the rod-shaped members and moves toward the floor surface raw concrete, the hardening of the handrail wall raw concrete can be promoted.

Furthermore, since the handrail wall ready-mixed concrete can be poured and placed without waiting for the floor surface ready-mixed concrete to be semi-hardened, it is possible to simultaneously harden these and make a unitary structure. Also, favorable results can be obtained. Moreover, since there is no waiting time, the working time can be shortened.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an example of a stopper according to the present embodiment.

FIG. 2 is an overall perspective view showing another example of the stopper according to the present embodiment.

FIG. 3 is a vertical cross-sectional view showing a usage example of the stopper according to the present embodiment.

FIG. 4 is a sectional perspective view mainly showing a portion of a building in which the stopper according to the present invention is used.

FIG. 5 is a vertical cross-sectional view showing a conventional construction method.

[Explanation of symbols]

1 ... Stopper 2 ... Rod-shaped member 3.
..Connecting members 4 ... Boundary 5 ... Bottom 6
..Support wires 10..Stoppers 12..Bar members 13..Coupling members 14..Cover body 50..Buildings 51..Verandas 52
..Floor surface 53..Handrail wall 54..Reinforcing bar 55
..Concrete materials 56..Floor surface formwork 57 ..
..Handrail wall form 59..Upper opening 60..Handrail wall concrete 61
..Separators

Claims (3)

[Claims] 1. An elongated rod-shaped member (2,
A spouting stopper for fresh concrete, characterized in that a plurality of pieces of 12) are arranged in parallel and in a plane shape with a constant interval, and one end side thereof is connected and integrated to form a comb shape. 2. A formwork for constructing a balcony or a floor surface of a building and a handrail wall part perpendicular to the floor part, which forms the handrail wall part (“handrail wall part formwork”). ), When pouring fresh concrete into the formwork that defines the floor surface (“floor surface formwork”), a plurality of molds are placed along the boundary between the concrete surface and the handrail wall formwork. The elongated rod-shaped member of the
A method for preventing spouting of fresh concrete, characterized in that it is held in a state of being inserted into the fresh concrete, and thereafter, the fresh concrete is poured into the formwork of the handrail wall section. 3. The raw material according to claim 2, wherein the comb-shaped body is inserted into the raw concrete so as to face the bottom of the handrail wall form with an appropriate inclination angle with respect to the floor surface form. How to prevent spouting of concrete.