JPH02217565A - Base concrete construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a method of constructing a base concrete that serves as a foundation such as a steel Todaihiki that supports the flooring of a house.

[Conventional technology]

The conventional construction method for base concrete is to dig a hole of a predetermined size and depth in the approximately 15 to 20 locations in one house where concrete is to be poured, fill it with gravel, and then fill it with wood or wood-based concrete. This construction method involves making a formwork using metal concrete formwork panels, pouring concrete inside the formwork, and removing the concrete formwork panels after the concrete has hardened.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional construction method, concrete formwork panels must be processed and assembled each time the base concrete is to be formed, which takes time and effort, and also reduces the volume and size of the concrete formwork panels themselves. The problem is that it is not easy to transport or store due to its weight.

[Means to solve problems]

This invention was made in view of the above circumstances, and its means is to assemble a plastic cardboard formwork around the inside of a hole dug to a predetermined size and depth, and After pouring concrete and curing it,
This is a base concrete construction method characterized by including the step of removing the plastic cardboard formwork.

〔Example〕

Embodiments of the base concrete construction method of the present invention will be described in detail below with reference to FIGS. 1 to 7.

First, as shown in FIG. 1, a hole 1 of a predetermined size and depth is dug at a location where base concrete is to be poured, and gravel is poured into the hole. Next, as shown in Figure 2 (al), select a plastic cardboard form 2 that matches the size and depth of the carpenter. A crease 3 is inserted and a weight margin 4 is formed at one end.If all or a group of base concretes to be poured are of the same size and shape, a predetermined number of these can be made in advance. However, if the shape is different, prepare a long and narrow rectangular shape and cut it into an appropriate size using a cutter, make a crease 3, and place a weight on it. Form a margin 4. Normally, two plastic cardboard forms 2 are used for one hole 1. In this case, as shown in Fig. 2(b)
As shown in the figure, the weight margin 4 formed at one end of each
and the other end of each are connected with a joining member 5 such as gummed tape and assembled. However, depending on the circumstances, the weight margin 4 at one end of one plastic ink cardboard formwork 2 and the other end may be connected by a joining member 5, or three or more plastic cardboard forms 2 may be connected by a joining member 5. You can also assemble it.

If the shape of the base concrete is circular or polygonal other than quadrangular, the crease 3 may be omitted or two or more creases 3 may be added. These folds 3 can be easily formed by pressing or cutting grooves approximately half the thickness of the plastic cardboard form 2 using a cutter.

When the plastic cardboard formwork 2 is assembled around the carpenter as described above, the level is adjusted using a level 6, etc., as shown in FIG. 3, and then, as shown in FIG. Place 7. After that, as shown in Figure 5,
Concrete 8 is poured and the top is leveled as shown in Figure 6. At this time, the plastic cardboard formwork 2
If this is the case, reinforcing steel bars 7 or the like is erected outside the plastic cardboard formwork 2, as shown in Fig. 7. After curing for 2 to 3 days, as shown in FIG. 8, the plastic cardboard formwork 2 is removed to complete base concrete. Plasty 7 removed from the frame
The cardboard formwork 2 can be used repeatedly several times by carefully removing it.

〔Effect of the invention〕

As is clear from the above explanation, the base concrete construction method of the present invention includes the step of using plastic ink cardboard formwork in place of conventional concrete formwork panels, so it is easy to use concrete formwork. It is not difficult to process or assemble like a frame panel, so
This has the advantage of improving overall work efficiency. Also, its volume,
Since it weighs less than concrete formwork panels and is lighter, it has the advantage of being easier to transport to the site and store.

Furthermore, if the frame is carefully removed, it can be used repeatedly, so it has the advantage of being economical.

[Brief explanation of the drawing]

The drawings are detailed explanatory diagrams of this invention. Figure 1 is an explanatory diagram of the hole for base concrete, Figure 2 (a) (mountain) is an explanatory diagram of the assembly of the plastic cardboard formwork, and Figure 3 is an explanatory diagram of the plastic cardboard formwork. An explanatory diagram of formwork level national preparation, Figure 4 is an explanatory diagram of reinforcement arrangement, Figure 5 is an explanatory diagram of concrete pouring,
Fig. 6 is an explanatory diagram of leveling the top of the concrete, Fig. 7 is an explanatory diagram of reinforcing the plastic cardboard formwork, and Fig. 8 is an explanatory diagram of removing the plastic cardboard formwork. 1- Hole, 2- Plastic cardboard formwork, 8- Concrete.

Claims (1)

[Claims] (1) The process of assembling a plastic cardboard formwork around the inside of a hole dug to a predetermined size and depth, pouring concrete inside it, curing it, and then removing the plastic cardboard formwork. A method of constructing base concrete characterized by comprising: