JPS6234902B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a concrete exterior wall pour joint construction method, and its purpose is to create a concrete exterior wall that is easier to construct than conventional construction methods, has superior water-stopping properties, and can reduce construction costs. This provides a method of pouring and splicing. [Prior Art] Conventionally, the generally used concrete exterior wall splicing construction method is mainly the loose plate splicing method. [Problems to be Solved by the Invention] However, in the above-mentioned discrete plate joint method, not only is it extremely time-consuming to manufacture and install the joint formwork in areas where there are many reinforcements, but also the material There are various problems such as loss due to one-time use, interruption of reinforcing bar welding, additional welding of reinforcing bars and increase in reinforcing material, occurrence of rework of joint formwork, poor water-stopping properties, and poor workability when removing formwork. The dot was hot. [Means for Solving the Problems] As a result of extensive research in order to solve the problems of the above-mentioned concrete exterior wall pour joint construction method, the present inventors have developed a method using a plurality of air tubes to form pour joints. The present invention was achieved based on the finding that the various problems described above can be solved by arranging the wafers in series to form a wavy joining surface. That is, the present invention arranges a plurality of air tubes in series between formworks to form partitions, then fills air in the air tubes to bring them into close contact with each other, and then pours concrete between the formworks. Then, when the concrete is in a semi-effective state, the air in the air tube is evacuated, the air tube is removed to form a wavy pouring surface, and the air tube is placed at the desired position between the formworks. It is characterized by arranging the concrete in the same way and sequentially pouring concrete into adjacent parts. [Example] Hereinafter, the present invention will be explained in detail based on the drawings.
The drawings show an example of the implementation of the present invention; Fig. 1 is a plan view before concrete placement, Fig. 2 is a plan view after concrete placement, and Fig. 3 is a view taken along line AA in Fig. 1. FIG. A plurality of air tubes 3 are arranged in series between the formwork 2 fixed by the separator 1 as shown in FIGS. Inflate the air tube 3 by blowing air. Then, the plurality of air tubes 3 arranged in series are brought into contact with the separator 1 and in close contact with each other between the molds 2, forming a partition between the molds 2. The air tube 3 is made of elastic material such as rubber, rubber-lined cloth, or synthetic resin.
Therefore, as shown in FIGS. 1 and 3, in the swollen state, they completely adhere to each other and have sufficient water-stopping properties. When each air tube is in close contact with each other, concrete is placed between the formworks, and when the concrete is in a semi-hardened state, the air inside the air tube 3 is removed and the air tube 3 is removed, as shown in Figure 2. As shown, the joint surface 41 is formed in a wavy shape. Furthermore, by arranging the air tubes 3 at required positions between the formworks as described above and pouring concrete into the adjacent parts in sequence, the joint surfaces become embedded into each other, making the joint surfaces strong. closely followed. Therefore, cracks and water leakage do not occur on the joint surface. As a result of comparing the construction process of the present invention construction method and the conventional loose board joint method at an actual work site under the same conditions, the required time is shown in Table 1. Excellent workability has been demonstrated.

【table】

[Effect]

According to the construction method of the present invention, the work time for pouring and splicing concrete exterior walls can be done in a shorter time than in conventional construction methods. This saves the worker's time and reduces costs. In addition, multiple air tubes can be easily inserted without being inflated even in areas with many reinforcements and multiple acid structures, and by inflating them after arranging them, they can be easily inserted into the formwork in such areas. The partition section can be configured in the following manner. Furthermore, since the joint surfaces are formed in a wavy shape, when concrete is poured one after another, the joint surfaces become embedded in each other, and the joint surfaces are very firmly fixed after pouring. This is a pour joint construction method that has excellent effects such as no cracks or water leaks.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; Fig. 1 is a plan view before concrete placement, Fig. 2 is a plan view after concrete placement, and Fig. 3 is an A-A of Fig. 1.
FIG. 1...Separator, 2...Formwork, 3...Air tube, 31...Air valve, 4...Concrete, 4
1... Joint surface.

Claims (1)

[Claims] 1 A plurality of air tubes are arranged in series between the formworks to form a partition, and then air is sealed in the air tubes to make them stick together, and then concrete is placed between the formworks and the concrete is When the air tube is in a half-effective state, the air in the air tube is removed, the air tube is removed to form a wavy joining surface, and the air tube is arranged in the same manner as described above at a desired position between the formworks. , a concrete exterior wall pouring construction method characterized by successively pouring concrete into adjacent areas.