JP2759569B2 - Method and apparatus for placing concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for casting concrete and an apparatus for casting concrete used in the method.

[0002]

2. Description of the Related Art Conventionally, when casting concrete, first, a concrete casting mold is assembled and concrete is cast into the same mold. At that time, the assembly of the formwork, the removal work, the production of the concrete for casting and the casting work were all left to the manual work of the workers.

[0003]

The above-mentioned conventional concrete placing work requires a great deal of labor and a long working time because most of the work is left to the manual work of workers. However, there is a problem that the construction period is postponed and the construction cost is increased. Particularly in recent years, labor shortages have become a major social problem, and there has been a demand for the promotion of labor saving at construction sites.

[0004] The present invention has been proposed in view of such circumstances, and its object is to reduce the labor required for concrete placing work, reduce the labor required for concrete placing work, and reduce the work time. It is an object of the present invention to provide a concrete pouring operation and a device capable of shortening the working period and shortening the cost and saving the cost.

[0005]

In order to achieve the above-mentioned object, according to the concrete casting method of the present invention, a concrete which hardens in a short time is manufactured while a suitable amount is injected and poured into a casting place. The produced concrete is injected and cast while the cast concrete is hardened.

Further, the concrete placing device according to the present invention is connected to a stirring and mixing device for a concrete material which hardens in a short time via a transfer device, and is further connected to the stirring and mixing device.
It is composed of an injection device equipped with mixing, heating and cooling functions, and a two-dimensional iron moving mechanism capable of receiving and sliding concrete injected from the injection device.

[0007]

According to the present invention, while an arbitrary amount of concrete material is first continuously stirred and mixed to produce a concrete which hardens in a short period of time, the concrete is continuously poured and cast at a casting place. Casting concrete hardens instantaneously. In this way, concrete is cast into a required shape without assembling a formwork by injecting and pouring while hardening the concrete.

The concrete casting device according to the present invention comprises:
An agitating and mixing device for concrete material that hardens in a short time, connected to the device via a transport device, and an agitating and mixing device, which is equipped with a heating and cooling function for the concrete, and is injected from the injecting device. While receiving the concrete, it is configured by a two-dimensional moving mechanism of a trowel that can slide, while the concrete placing method is smoothly performed, and the heating and cooling mechanism provided in the injection device, It controls the setting speed of concrete.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 shows an embodiment of a concrete casting device according to the present invention, in which a material hopper 1 constituting a storage section for concrete material and a concrete continuous mixer 2 constituting a tying device, and concrete stirring, mixing and stirring mixing. A cement storage tank 4, a gravel storage tank 5, a sand storage tank 6, a water storage 7, and an admixture storage tank 8 are connected to the material hopper 1; Concrete which is injected from the concrete injection device 10 to which the concrete injection device 10 is connected is received by the iron 11, and the iron 11 is automatically and two-dimensionally moved by a secondary movement function described later. It is configured to:

Since the illustrated embodiment is constructed as described above, gravel, sand, cement 4,
A material such as an admixture is charged from the storage tank, and is charged into the continuous concrete mixer 2 installed on the hopper 1 and mixed with water and an admixture by stirring. To the concrete injection device 10.

The concrete injection device 10 is provided with a heating and cooling device in addition to a stirring and mixing device. The concrete injection device 10 is connected to the concrete injection device 10 via a pipe 9 from a compressed air and quick-setting material storage tank 13 via a pipe 14. The quick-setting material or water glass sent is stirred and mixed before being sprayed. The injected concrete solidifies immediately and develops sufficient strength for shape preservation, so the construction is molded three-dimensionally, that is, vertically and horizontally, and in any form, requiring a formwork. do not do.

The iron injected from the concrete injection device 10 is received by a trowel 11, and the trowel 11 forms a shape while sliding. As it takes shape, the concrete injection device 10 and the iron 11 move three-dimensionally as needed. The portion provided from the storage and supply device for the concrete material and the device for feeding the stirred and mixed concrete and the stirred and mixed concrete need not necessarily be adjacent to the concrete placing site. It suffices if it is within the range where concrete can be pumped. In addition, concrete storage and supply equipment and concrete agitation and
Instead of using a mixing device, it is also possible to send commercially available ready-mixed concrete from the concrete pumping device 3 in this part.

A concrete injection device 10 having a function of further stirring, mixing, heating and cooling the concrete sent as described above, and the injection device is automatically and two-dimensionally provided as necessary. A frame 16 having a function of moving and moving, and a device having a frame 15 having a function of moving and moving the iron 11 capable of receiving the injected concrete and further capable of sliding two-dimensionally as needed automatically. The part where concrete is cast and constructed directly. In the above-mentioned part, a pipe 1 for supplying water glass or quick-setting material to the injection device 10 for stirring and mixing.
4 are connected. As for the concrete injected from the concrete injection device 10, the concrete passing through the pipe 9 is stirred, mixed, heated and cooled with the quick-setting material, and further supplied with compressed air and the quick-setting material from the storage tank 13 through the pipe 14. receive.

The concrete injection device 10 is connected to a frame 16. The iron 11 is connected to the frame 15. The frame 15 and the frame 16 are respectively connected to the frame 18,
The frame 18 is connected to the frame 17. The frame 17 is further connected to a frame 20, and the frame 20 is further connected to a frame 19 provided with a self-standing device to move each of the frames back and forth.

As the concrete produced by the continuous mixer 2 and sent to the concrete injection device 10 through the pipe 9, any concrete can be used. That is, basically, one having a low water binder ratio (for example, 20% or less) and one having a large water binder ratio (for example, 80% or more) are used. Whether or not it is used can be determined by checking whether or not it is sent to the concrete injection device 10 through the pipe 9.

Next, the operation of this embodiment will be described. First, materials such as gravel, sand, cement, and admixture are sent from each storage tank into the material hopper 1. These materials are supplied from the hopper 1 to the continuous mixer 2, where they are stirred and mixed with the water and the admixture to form ready-mixed concrete.
The ready-mixed concrete is sent from the concrete pumping device 3 to the concrete injection device 10 through the pipe 9. The concrete sent to the injection device 10 is stirred and mixed with the quick-setting material, heated and cooled, and injected. Hydration reaction of the injected concrete is accelerated by the quick setting material, and the setting speed is increased. When it is injected and hits the trowel 11, it has hardened sufficiently to keep the shape, but the hydration reaction has not ended. The setting speed depends on the type and amount of quick-setting material, but also on the temperature of the concrete. For this reason, the concrete injection device 10 is provided with a heating / cooling function.

The concrete injected from the concrete injection device 10 is sufficiently hardened to keep its shape at the moment of injection, so that the injection speed, the injection direction, and the injection method can be appropriately set. It can be molded into various forms. The reason for using a trowel here is to make the construction easier. FIG. 2 shows an embodiment in which the present invention is applied to the construction of a concrete beam, in which an iron 11 is positioned at the bottom of a concrete beam B on a concrete column A,
Concrete is injected and poured into the portion of the concrete beam B on the upper part of the iron 11 and the upper part of the concrete column A as shown in the above embodiment. When an arbitrary area is formed as the bottom of the planned concrete beam B, an iron 11 'as shown in FIG. 3 is positioned on the side of the planned concrete beam B, and then the iron 11' is already formed. Concrete beams are cast and poured into and out of the concrete that forms the bottom surface of the beam, and the concrete beam B is formed. Thus, the concrete beam is constructed, and the concrete beam can be constructed more easily by using the iron 11 '.

FIG. 4 shows a measurement example of concrete compressive strength by the method of the present invention. Next, examples of concrete compounding used in the present invention will be described. a) wet unit cement amount C; 560 kg admixture (silica fume) Si; C × 20% unit water amount; (C + Si) × 26% admixture; fluidizer aggregate; hard crushed stone / crushed sand S / A; 40% quick setting Material: C × 10.5% ... QP as quick-setting material
-55 "(trade name) (NMB Corp.). b) Dry type Cement amount C: 650 kg Unit water amount: C × 82% Aggregate: Hard crushed stone / crushed sand S / A: 40% Quick setting material: C × 15%... QP-5 as quick setting material
5 "(trade name) (NMB Corporation) was used.

[0019]

As described above, according to the concrete placing method and apparatus according to the present invention, a series of concrete placing operations can be performed almost automatically, so that the concrete placing operation can be labor-saving. Thus, the labor required for the work can be reduced, the work time can be shortened, the work period can be shortened, and the work cost can be reduced.

Further, since cast concrete hardens immediately after casting, temporary materials such as formwork are not required, work is facilitated, and temporary costs and work for temporary installation are greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a configuration of an embodiment of a concrete placing device according to the present invention.

FIG. 2 is a perspective view showing an embodiment in which the method of the present invention is applied to placing a concrete beam.

FIG. 3 is a perspective view showing an embodiment of a trowel.

FIG. 4 is a measurement example of the compressive strength of concrete cast by the method of the present invention.

[Explanation of symbols]

 A Column B Beam 1 Material hopper 2 Concrete continuous mixer 3 Concrete pumping device 4 Cement storage tank 5 Gravel storage tank 6 Sand storage tank 7 Water storage tank 8 Admixture storage tank 9 Piping 10 Concrete injection device 11 Iron 11 'Iron 13 Compressed air and quick-setting material storage tank 14 Piping for quick-setting agent supply 15 Frame 16 Frame 17 Frame 18 Frame 19 Frame 20 Frame

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04G 21/02 103

Claims (2)

(57) [Claims] 1. A concrete, characterized in that a concrete which hardens in a short time is produced, a proper amount is injected and poured into a casting place while the concrete is injected and the hardened concrete is injected. How to cast. 2. A stirring and mixing device for a concrete material which hardens in a short time, and connected to the device via a transfer device,
And a concrete injection device having an agitating, mixing, heating, and cooling functions, and a two-dimensional moving mechanism of a trowel capable of receiving the concrete injected from the injecting device and sliding. Equipment.