JPH0818293B2 - Method for manufacturing lightweight cellular concrete panels - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a lightweight cellular concrete panel used as an outer wall material of a building or the like.

[Background technology]

The conventional manufacturing method of a lightweight cellular concrete panel that is used as an outer wall material of a building and is manufactured from one formwork is as follows. After solidifying, the concrete original plate is made by demolding from the mold, and the concrete original plate is subjected to autoclave curing to produce a lightweight cellular concrete panel.

There are various types of lightweight aerated concrete panels that are manufactured. Since a formwork was prepared for each of these panels, the number of types of formwork increases and the cost of producing formwork also increases. Conventionally, a small panel is manufactured by utilizing a part of the internal space of a large mold used for manufacturing a large panel.

 6 and 7 show this manufacturing method.

A partition member 51 is inserted inside the large mold 50, so that a small panel molding space 52 is formed inside the large mold 50.
Is formed. As shown in FIG. 7, the partition member 51 is a large formwork.
It has the same height dimension as the side wall 50A of 50. After the bar material 53 is suspended and held by a jig (not shown) in the small panel molding space 52, concrete slurry is cast into the space 52, and after the slurry has solidified, the jig is removed and the mold is removed. Then, a concrete original plate is obtained, and this concrete original plate is autoclaved to produce a small lightweight cellular concrete panel.

[Problems to be Solved by the Invention]

According to the above conventional method, since only one part of the internal space of the large mold 50 is used to manufacture one panel, the efficiency of use of the mold is poor.

In addition, a plurality of partition members are put in the large mold 50 to form a plurality of small panel molding spaces inside the large mold 50, so that a single large mold can manufacture a plurality of small panels. However, since the multiple concrete original plates obtained by demolding are separated from each other, the holding metal fittings for holding the original plates, for example, when these original plates are set upright and are cured in an autoclave in a high temperature and high pressure tank, are provided. There is a problem in that the number of panels to be manufactured is required and the number of parts to be prepared increases. Also,
When the original plates are stored in the tank and cured in an autoclave, there is a gap between these original plates, and there is a problem that the original plate storage space efficiency in the tank is reduced by the amount of the gap.

It is an object of the present invention that a plurality of panels can be manufactured from one large mold to improve the use efficiency of the mold, and at the same time, it is necessary to prepare the same number of holding metal plates of the original plate as the number of panels to be manufactured. It is possible to reduce the number of parts by this, and to provide a method for manufacturing a lightweight cellular concrete panel that can improve the efficiency of the original plate storage space in the high temperature and high pressure tank during autoclave curing. is there.

[Means for solving the problem]

The method for manufacturing a lightweight cellular concrete panel according to the present invention is a method in which concrete slurry is placed in a mold containing a reinforcing bar, and a concrete original plate obtained by demolding the mold is autoclaved to be lightweight. In the method for producing a cellular concrete panel, by inserting a partition member having a height lower than the side wall of the mold in the mold, a plurality of panel molding spaces partitioned by the partition member in the mold are formed. Formed, cast concrete slurry to a higher level than the partition member in these panel forming spaces, and autoclave-cured a concrete original plate having grooved recesses by the partition member obtained by demolding from the mold After that, a plurality of separated concrete panels are manufactured by a cutting operation in the groove-shaped recess.

[Action]

The height of the partition member is lower than the side wall of the formwork, and the concrete slurry is placed in each panel molding space to a level higher than that of the partition member. A large original plate having a groove-shaped concave portion and a connecting portion at the upper portion. By subjecting this original plate to autoclave curing and then performing a cutting operation in the concave portion, a plurality of small lightweight lightweight concrete panels can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a mold 1 used for carrying out the manufacturing method according to the present embodiment. The mold 1 is a large mold for manufacturing originally large-sized lightweight cellular concrete panels. The formwork 1 is composed of a bottom portion 1A and four side walls 1B to 1E, and is used for manufacturing a panel by flat punching. A large number of holes 2 are regularly formed in the bottom portion 1B, and a plurality of these holes 2 are arranged in the front-rear direction (three in the illustrated example).
Form one row, and this row includes a plurality of rows (7 rows in the illustrated example) A to G in the left-right direction. The spacing between each row is determined based on a module in which the panel manufactured by the formwork 1 is a standard size of a building used as an outer wall material, for example.

Of the four side walls 1B to 1E, two side walls facing each other
Holes 3 are formed in 1B and 1C. There are a plurality of holes 3 in the left-right direction, and each hole 3 is provided at a position corresponding to the position of each row A to G of the hole 2.

The partition member 4 inserted into the mold 1 is the side walls 1B and 1C.
Has a length equal to the distance between the inner side surfaces of the above, and a plurality of protrusions 5 are provided on the lower surface. These protrusions 5 are provided at the same intervals as the rows 2 of the holes 2. Further, screw holes 6 are formed on both end surfaces of the partition member 4.

As shown in FIG. 2, the partition member 4 has a height dimension lower than the side walls 1B to 1E by H.

Next, a method for manufacturing a lightweight cellular concrete panel using the above mold 1 and partition member 4 will be described.

Insert the partition member 4 into the mold 1 and insert the projection 5 into the hole 2
Insert in the appropriate column of columns A-G. Where the hole 2
A suitable row of is a row of holes 2 in a position where a lightweight cellular concrete panel having the desired predetermined dimensions can be produced. Next, a bolt 7 is inserted into the hole 3 of the side walls 1B and 1C at a position corresponding to the partition member 4, and the bolt 7 is screwed into the screw hole 6 and tightened.

As a result, the partition member 4 is arranged in the mold 1 while being positioned by the hole 2 and the projection 5, and the bolt 7
It is fixed to the form 1 by. The plug member 8 is tightly fitted in the hole 3 in which the bolt 7 is not inserted, and as shown in FIG. 2, the plug member 9 is tightly fitted in the hole 2 in which the protrusion 5 is not inserted. This ensures the tightness of these holes.

As described above, the panel molding space partitioned by the partition member 4 is provided inside the mold 1, and since two partition members 4 are used in this embodiment, as shown in FIG. Inside the mold 1, three panel molding spaces 10 to 12 are provided. After the bar material 13 is suspended and held in these spaces 10 to 12 by a jig (not shown), concrete slurry is poured into the formwork 1. The pouring of this slurry is performed to a level higher than that of the partition member 4.

After the slurry is solidified, the jig is removed, and the concrete original plate 14 shown in FIG. 3 is obtained by removing the mold from the mold 1. This original plate 14 is a large original plate having the same size as the formwork 1, and a groove-like concave portion 15 is formed in the portion with the partition member 4, and the upper portion thereof has a level higher than that of the partition member 4. As a result of the concrete slurry being cast, the connecting portion 16 is formed.

In this embodiment, the master 14 is removed from the mold 1 by vertically standing the mold 1, and the vertical master 14 is held by a holding metal fitting (not shown) and stored in a high temperature and high pressure tank to be autoclaved. Be cured. After curing in the autoclave, it is cut in the groove-shaped recess 15, and three light-weight cellular concrete panels separated by this are made, and each panel is finished by finishing work such as painting.

The cutting work in the groove-shaped recess 15 only needs to cut the thin connecting portion 16, and since the reinforcing bar 13 is not buried in this portion, the cutting work can be easily performed.

According to the present embodiment described above, since the lightweight cellular concrete panel can be manufactured by using the entire internal space of the large mold 1, the use efficiency of the mold 1 is increased. Also,
The original plate 14 demolded from the mold 1 has the connecting portion 16 and is not separated. Therefore, the holding metal fittings for vertically holding the original plate 14 need not be the same as the number of panels to be manufactured. It is possible to reduce the number of parts of the holding metal fitting. Further, even when the original plate 14 is stored in the high temperature and high pressure tank for curing the autoclave, the original plate 14 is in the state of being connected by the connecting portion 16, so that the original plate 14 for manufacturing a plurality of panels has a gap. The original can be stored in the tank without the above condition, so that the efficiency of the original storage space in the tank can be improved and many originals can be put in the tank.

Further, in the present embodiment, the position of the partition member 4 inserted into the formwork 1 is based on the module having the reference dimensions of the building due to the rows A to G of the holes 2, and thus the position of the panel that can be manufactured. The dimensions can be based on this module.

4 and 5 show another embodiment of the present invention. In the above-mentioned embodiment, the two partition members 4 are parallel and inserted into the mold 1, but as shown in FIGS. 4 and 5, the two partition members 24 and 34 are formed at right angles. It may be inserted into the frame 1 to produce a panel having a desired size and shape. In addition, the inside of the formwork is made by using the partitioning member having the same height dimension as the side wall of the formwork and the partitioning member having the height dimension lower than the side wall, without using the entire formwork 1 as the panel forming space. A plurality of panels may be manufactured by using a part of the space, which also allows a plurality of panels to be manufactured by one mold, so that the mold use efficiency is increased.

Further, in the above-mentioned embodiment, the concrete original plate was stood vertically and demolded, but the method according to the present invention can be applied to the case where it is not demolded in this way, and in this case as well, in order to hold the original plate. It is not necessary to have the same number of holding brackets as the number of panels to be manufactured.

〔The invention's effect〕

According to the present invention, since a plurality of panels can be manufactured from one large mold, the efficiency of use of the mold can be improved, and the demolded concrete original plate is in a state of being connected by the connecting portion. As a result, it is possible to reduce the number of original plate holding metal fittings, thus reducing the number of parts, and to improve the original plate storage space efficiency in the tank when curing the autoclave. The original plate can be autoclaved at the same time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mold and a partition member used for carrying out a method according to an embodiment of the present invention, FIG. 2 is a sectional view after the partition member is inserted into the mold, and FIG. FIG. 4 is a cross-sectional view showing a concrete original plate obtained by demolding, FIGS. 4 and 5 are plan views of a mold for carrying out the method of another embodiment, and FIG. 6 is a mold showing a conventional example. And FIG. 7 is a sectional view of FIG. 1 ... Formwork, 1B-1E ... Sidewall, 4,24,34 ... Partitioning member, 10-12 ... Panel molding space, 13 ... Reinforcing bar, 14
...... Concrete master plate, 15 ...... grooved recess, 16 ...... connecting part.

Claims (1)

[Claims] 1. A method for producing a lightweight cellular concrete panel by autoclaving a concrete original plate obtained by placing concrete slurry in a mold containing a reinforcing material and removing the mold from the mold. , A plurality of panel molding spaces partitioned by the partition member are formed in the mold by inserting a partition member having a height lower than the side wall of the mold into the mold, and these panel molding spaces are formed. After pouring concrete slurry to a level higher than that of the partitioning member, and autoclaving the concrete original plate having the grooved recesses by the partitioning member obtained by demolding from the formwork, cutting in the grooved recesses A method for manufacturing a lightweight cellular concrete panel, which comprises manufacturing a plurality of separated concrete panels by an operation.