JPH0833033B2 - Adiabatic concrete and its manufacturing method - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating concrete in which a heat insulating layer made of foamed beads is provided inside a wall-shaped concrete wall, and a method for producing the same. "Prior Art" Conventional insulating concrete of this type is, for example,
The structure is as shown in the figure. In the figure, symbol A is a conventional heat insulating concrete,
This heat-insulating concrete A is provided on a concrete body 1, reinforcing reinforcing bars 2 embedded to reinforce the concrete body 1, a heat-insulating board 3 attached to one surface of the concrete body 1, and an outer surface of the heat-insulating board 3. The finishing mortar 4 is formed into a layer. Then, as a method of manufacturing such heat-insulating concrete A, for example, after assembling a formwork, reinforcing reinforcing bars 2 are laid inside the formwork, and concrete is placed inside the formwork by in-situ casting to form the concrete body 1. After forming, a heat insulating board 3 manufactured in a flat plate shape is attached by an adhesive or the like, and a means for applying finish mortar 4 to the surface of this heat insulating board 3 by plastering work is used, or the inside of the formwork is used. After the heat insulating board 3 is attached to the reinforcing bars incorporated in the mold via metal fittings or the like, concrete is placed inside the formwork to form a layered body of the reinforced concrete and the heat insulating board 3, and then the heat insulating board 3 A means for applying the finishing mortar 4 to the surface is applied. [Problems to be Solved by the Invention] However, in the conventional heat insulating concrete and the manufacturing method thereof, after forming the reinforced concrete, the heat insulating board 3 is bonded, or the heat insulating board 3 is attached to the rebar through a metal object or the like. Since it needs to be attached, there is a problem to be solved that the construction is troublesome. The present invention effectively solves the above problems, and an insulating concrete that can be formed without adhering an insulating board to concrete or attaching the insulating board to a reinforcing bar via a metal object, etc., and a method for manufacturing the same. It is intended to be provided. "Means for solving the problem" In order to achieve such an object, the heat insulating concrete of the present invention is a heat insulating concrete in which a heat insulating layer made of foam beads is provided inside a concrete wall provided in a wall shape, The heat insulation layer is composed of a set of rib laths embedded along a wall surface of the concrete wall along the wall surface at a predetermined interval, and a foam bead filled between the rib laths and having a diameter larger than the eyes of the rib laths. It is characterized by that. Further, in the method for producing heat-insulating concrete of the present invention, it is a method for producing heat-insulating concrete in which a heat-insulating layer made of foam beads is provided inside a concrete wall provided in a wall shape, and the inside of a formwork is assembled. After arranging a pair of left and right reinforcing bars parallel to each other at a predetermined interval and arranging planar rib laths so as to face each other on these reinforcing bars, the diameter of the rib laths should be larger than the rib laths. At the same time as blowing a large foam bead, the concrete is placed inside the formwork a little later than the blowing of the foam bead so that it is always positioned lower than the bulkiness of the foam bead. "Operation" The heat-insulating concrete of the present invention has a set of rib laths embedded in a concrete wall along the wall surface and at a predetermined interval, and a diameter larger than the eyes of the rib laths filled between the ribs. By providing the heat insulating layer composed of the foam beads, the concrete wall has a uniform heat insulating layer mainly composed of the foam beads, and the heat insulating property of the concrete wall is improved. The method for producing heat-insulating concrete of the present invention, after arranging a planar rib lath on each of a set of reinforcing rebars, blow a foam bead having a diameter larger than the eyes of the rib lath between the rib laths and at the same time make the foam bead bulky By placing concrete that is always in the lower position inside the formwork a little later than the blowing of the foam bead, the foam bead is always integrated with the concrete while being sandwiched between the rib laths. Blow in the bead, and at the same time when pouring it, always be lower than the bulkiness of the foam bead,
Since the concrete is poured into the formwork with a slight delay, it is possible to place the foam beads and the concrete at the same time, and it is possible to improve workability during the production. In addition, the concrete poured into the mold is filled in the gap of the foam bead through the eyes of the rib lath, and the foam bead is integrated between the rib laths. [Examples] Hereinafter, an example of an insulating concrete and a method for producing the same according to the present invention will be described with reference to the drawings. FIG. 1 shows a cross-sectional view of the heat insulating concrete according to the present invention. In the heat insulating concrete indicated by reference numeral 10 as a whole, a heat insulating layer S made of foam beads 12 is provided inside a concrete wall 11 provided in a wall shape. It has a basic configuration. The heat insulating layer S has a structure in which a pair of left and right rib laths 13 embedded in the concrete wall 11 are filled with a foam bead 12 having a diameter larger than that of the rib laths 13. The rib lath 13 is supported on the inner surfaces of a pair of left and right reinforcing bars 14 embedded inside the concrete wall 11 by means such as spot welding or a means for winding wire, and is almost the same as the concrete wall 11 to be molded. The size is used. Next, an example of a method for producing the heat insulating concrete having the above-described structure will be described in the order of steps.

[Assembling the rib lath]

First, as shown in FIG. 2, a formwork 20 of a concrete wall 11 to be formed is assembled, and a pair of left and right reinforcing bars is provided inside the formwork 20.
14 are arranged in parallel at predetermined intervals. This reinforcement bar 14
The main rebar 14a extending in the vertical direction and a reinforcing rebar 14b extending substantially at right angles to the main rebar 14a are assembled in a cross beam shape and are supported inside the form 20 via a separator or the like. Next, as shown in FIG. 3, planar rib laths 13 are arranged on the inner surfaces of these reinforcing bars 14. The rib lath 13 may be attached to the inner surface of the reinforcing bar 14 after the reinforcing bar 14 has been laid out. However, when the reinforcing bar 14 is surrounded, the rib lath 13 may also be incorporated in advance.

[Blow-in of foam beads and concrete placement]

Reinforcing bar 14 and rib lath 13 inside the mold as described above.
After assembly, as shown in FIG. 4, a foam bead 12 having a diameter larger than the mesh of the rib lath 13 is blown into the inside of the rib lath 13 arranged in parallel. At this time, since the outer diameter of the foam bead 12 is formed to be larger than the size of the rib lath 13, the foam bead 12 stays inside the rib lath 13 without leaking to the outside. Then, as shown in FIG. 5, concrete C is placed inside the formwork 20 a little later than the start of blowing the foam beads 12. Through such a process, concrete
While being filled inside, the gap of the foam beads 12 is filled, and as shown in FIG. 1, a concrete wall 11 having a heat insulating layer S made of the foam beads 12 is formed in the central portion. In the embodiment, since the concrete C is placed so that the foam beads 12 are always lower than the accumulation due to the blowing, the foam beads 12 blown inside the rib lath 13 are formed.
The gap is filled with concrete and hardened, so that the heat insulating layer S made of the foam beads 12 can be easily formed. Therefore, according to the process of the example, the heat insulating concrete does not have to be attached with a heat insulating board or the like as in the conventional case,
It can be easily constructed, the workability at the site can be improved, the construction period can be shortened, and the seam of the heat insulating board can be eliminated compared to the heat insulating concrete configured by pasting the heat insulating board. A uniform heat insulating structure can be obtained. It should be noted that the present invention is not limited to the above-described embodiment, and when, for example, an insulating concrete having such a structure is manufactured in a basement, one side becomes a ground, so a formwork assembled on one side is omitted. be able to. “Effects of the Invention” As described above, according to the present invention, the following excellent effects can be obtained. (A) The heat-insulating concrete of the present invention is a heat-insulating concrete in which a heat-insulating layer made of foam beads is provided inside a wall-shaped concrete wall, and the heat-insulating layer comprises:
It is composed of a set of rib laths embedded inside the concrete layer along the wall surface thereof and at a predetermined interval, and a foam bead filled between these rib laths and having a diameter larger than the eyes of the rib laths. Since it is a feature, it has a structure having a heat insulating layer made of foamed beads having a uniform structure inside a concrete wall, and it is possible to provide concrete having excellent heat insulating properties. (B) Further, in the method for producing heat-insulating concrete of the present invention, the method is a method for producing heat-insulating concrete in which a heat-insulating layer made of foam beads is provided inside a wall-shaped concrete wall, and a formwork is assembled. After arranging a pair of left and right reinforcing bars parallel to each other at a predetermined interval, and arranging planar rib laths so as to face each other on these reinforcing bars, the rib laths are formed between these ribs. At the same time as blowing a foamed bead having a larger diameter than that, the concrete is placed in the formwork a little later than the blowing of the foamed bead so that it is always positioned lower than the bulkiness of the foamed bead. The foam bead is always sandwiched between the ribs and integrated with the concrete, and the foam bead is blown in and poured at the same time as the pouring. Since the concrete is poured into the formwork with a slight delay so that it is always lower than the bulkiness of the base, it is possible to place the foam beads and the concrete at the same time and improve the workability during the production. Therefore, it is not necessary to attach the heat insulating board to the concrete or to attach the heat insulating board to the reinforcing bar via a metal object as in the conventional case, and the work period can be shortened.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.
FIG. 1 is a cross-sectional view of heat insulating concrete, and FIGS.
The figure is a process drawing showing the steps during the production of heat insulating concrete, and FIG. 6 is a sectional view showing an example of the structure of conventional heat insulating concrete. 10 …… Insulated concrete, 11 …… Concrete wall, 12…
… Foam bead, 13 …… Rib lath, 14 …… Reinforcing steel bar, 20…
… Formwork.

Claims (2)

[Claims] 1. A heat insulating concrete in which a heat insulating layer made of foam beads is provided inside a wall-shaped concrete wall, wherein the heat insulating layer is inside the concrete wall along the wall surface and at a predetermined interval. With a set of rib laths buried at
A heat insulating concrete which is filled between these rib laths and is constituted by a foam bead having a diameter larger than that of the rib laths. 2. A method for producing heat-insulating concrete in which a heat-insulating layer made of foamed beads is provided inside a wall-shaped concrete wall, in which a formwork is assembled and a pair of left and right reinforcing bars are provided inside the formwork. After arranging parallel ribs at predetermined intervals and arranging planar rib laths on these reinforcing bars so as to face each other, at the same time as blowing a foam bead having a diameter larger than the rib laths between these rib laths. A method for producing heat-insulating concrete, which comprises placing concrete inside the formwork a little later than the blowing of the foam bead so that it is always positioned lower than the bulkiness of the foam bead.