JP2579277B2 - Formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for producing secondary concrete products, and more particularly to a formwork suitable for producing large-sized products.

[0002]

2. Description of the Related Art In the process of manufacturing a secondary concrete product, after curing concrete, steam curing is performed in order to obtain sufficient concrete strength at an early stage. For a small formwork, the formwork is moved to a steam curing room and steam cured. It is common to carry out steam curing for large-sized products by moving around them without covering them, or by covering a box made of a heat insulating material with the sheets and blowing steam into the inside.

[0003]

With respect to the above-described large-sized mold, the method of covering the periphery of the mold with a sheet is inefficient due to poor setup efficiency and poor work efficiency and a lot of steam leakage. . In addition, the method of covering a box made of a heat insulating material requires work using a crane, so that the work efficiency is still poor, and a large space in the factory is required as a place for storing the box.

The present invention solves the above-described problems in steam curing of large products, and has been made in order to provide a mold capable of performing steam curing in a very labor-saving manner.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a concrete product molding space which is filled with concrete from an opening which has a concrete product molding space surrounded by a weir board and which opens upward, and is filled with concrete. In a mold for molding a product, a heat insulating wall is provided at a predetermined interval outside the weir, and a steam curing space is formed between the weir and the heat insulating wall, and an opening of the weir is provided at an upper end of the heat insulating wall. By providing a detachable lid for covering, a steam curing space is formed between the lid and the concrete surface of the opening, and all of the steam curing spaces communicate with each other. .

[0006]

According to the present invention, a heat insulating wall is provided at a predetermined interval outside the dam and a steam curing space is formed between the dam and the heat insulating wall. By filling the curing space with steam, steam curing can be easily performed, and the work of covering the mold with a sheet or covering a box is not required. In addition, a removable lid is provided at the opening where the concrete is poured. By blowing steam into the curing space,
Concrete surfaces can also be steam cured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. FIG. 1 is a perspective view of a mold 1 according to one embodiment of the present invention, FIG. 2 is a sectional view of the mold 1, and FIG.
FIG. 4 is a plan view of the unmolded state of FIG.

Form 1 is a form of a block for an L-shaped retaining wall.
As shown in FIG. 1, the molding is performed in a state where the L-shape faces upward, and is a mold used particularly for manufacturing a large L-shaped retaining block. Concrete is poured into an internal space surrounded by the weir board 2 and the base 7 and hardened to form a block. A receiving port 6 is formed in the upper part of the form to facilitate the pouring of concrete.

A heat insulating wall 3 is provided outside the weir board 2 at intervals, and a steam curing space 4 is formed between the weir board 2 and the heat insulating wall 3. The heat insulating wall 3 is formed by attaching a heat insulating plate made of foamed plastic, glass wool, rock wool, or the like to a steel frame structure provided on the outside of the weir plate 2 so as to be supported thereon. In the drawings, auxiliary members such as a skeletal structure, a reinforcing material for a weir, and a clamp are omitted.
As shown in FIG. 1 or FIG. 2, the heat insulating wall 3 is slightly higher than the weir board 2, and the lid 5 is placed thereon. Lid 5
Is made of the same insulation board as the insulation wall. The space between the lid 5 and the concrete surface 14 is a steam curing space, and all the steam curing spaces are in communication.

As shown in FIG. 1, a notch 1 is formed in a heat insulating wall 3 in a portion where a clamp, which is a fastener of the formwork, is attached.
3 is provided, from which a clamp operation can be performed. The part with a vibrator that vibrates the formwork to spread concrete to every corner of the formwork,
Similarly, it is better to provide a cutout in the heat insulating wall. Also, when it is necessary to set the embedding bracket of the concrete product on the formwork, a window that can be opened and closed is provided on the heat insulating wall of the portion, and by opening this window, it is possible to work on the dam. What should I do?

The steam is supplied to the steam curing space 4 from a steam outlet 8 connected to a boiler (not shown). The steam valve that controls the supply of steam is opened and closed by a solenoid valve. The steam blown out from the steam outlet 8 into the curing space 4 reaches the opposite wall portion from the wall portion through the space between the lid 5 and the concrete surface 14, and fills all the steam curing space. A drain hole 12 is provided in the lower part of the steam curing space to prevent rust on a weir board and the like.

When the steam curing is completed, the mold 1 is removed as shown in FIG. The weir 2a is slid by a foot 9 with a lower wheel 10, and the weir 2b is rotated by a hinge 11. Then, after the cured concrete product is taken out, it is assembled again.

There is no particular limitation on the distance between the weir and the heat insulating wall, but the wider the space is, the more the steam is filled.
It is advantageous. The heat insulating wall does not need to be provided on the entire outside of the weir, and the portion having a small area can be omitted.

The formwork of the present invention is not limited to the formwork of the block for the L-shaped retaining wall of the embodiment, but can be used for forms of various concrete products such as manholes, boxes and boxes.

[0015]

According to the formwork of the present invention, the steam curing can be easily performed by filling the steam curing space of the form with the steam curing after pouring the concrete. It is not necessary to cover or cover with a box, and a space for storing sheets and boxes is not required, and a secondary concrete product can be manufactured efficiently. Also,
Since the concrete surface of the upper opening can be steam-cured, especially when manufacturing concrete products with a formwork with a large opening,
The steam curing can be performed uniformly, and the quality of the concrete product does not deteriorate.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mold 1. FIG.

FIG. 2 is a schematic sectional view of a mold 1. FIG.

FIG. 3 is a top view of the mold 1 in a detached state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 2 Weir board 3 Heat insulation wall 4 Steam curing space 5 Lid 6 Receptacle 7 Base 8 Steam outlet 9 Foot 10 Wheel 11 Hinge 12 Drain hole 13 Notch 14 Concrete surface C Concrete product

Claims (1)

(57) [Claims] 1. Molding of a concrete product surrounded by a weir
Clearing from the opening that has space and opens upward
To the concrete product molding space
In the formwork to fill concrete and mold concrete products,
A heat insulating wall is provided at a predetermined interval outside the weir board, a steam curing space is formed between the weir board and the heat insulating wall, and a detachable lid is provided at the upper end of the heat insulating wall to cover the opening of the weir board.
In this way, steam can be generated between the lid and the concrete surface of the opening.
A steam curing space is formed, and each steam curing space is
Formwork characterized by all communication