JPH0734582A - Dry type floor construction method of concrete panel - Google Patents

Abstract

PURPOSE:To improve fireproof performance while enhancing the efficiency of the execution of works. CONSTITUTION:A plurality of concrete panels are laid on the beam of a building while leaving a clearance C between each long-side side header surfaces 1a, 2a of an arbitrary one concrete panel 1 and the other concrete panel 2 adjacent to the concrete panel 1. A surface-shaped gasket 3 made of a silicone rubber composition is attached on the long-side side header surface of the arbitrary one concrete panel 1 through adhesives. The other concrete panel is brought near to one concrete panel forcibly, and the surface-shaped gasket is compressed by both concrete panels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry floor construction method for a concrete panel such as a so-called PC board, particularly a lightweight aerated concrete (ALC) panel.

[0002]

2. Description of the Related Art Conventionally, a plurality of concrete panels are mounted on a beam of a building, with both ends of the short sides of the panels being short-circuited.
A dry floor construction method of concrete panels laid in a plane by fixing is known.

[0003]

Since this construction method does not require the use of mortar and can improve the construction efficiency of the construction method, it has been gradually used in the construction field in recent years. However, in this construction, any one
There has been a problem of how to provide sound insulation performance without causing any inconvenience between the long side edge of one sheet of concrete panel and that of another sheet of concrete panel.

Therefore, there has been proposed a construction method for preventing noise due to the joining of the small edge surfaces with a viscoelastic material such as butyl rubber to enhance the sound insulation performance. Although this construction method has achieved a corresponding effect, the floor interposing the viscoelastic material still has room for improvement in fire resistance performance. It is an object of the present invention to provide a construction method in the dry floor construction method capable of improving the fire resistance of the dry floor construction while improving the construction efficiency.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a planar shape by mounting and fixing a plurality of concrete panels on both ends of their short sides on a beam of a building. In the dry floor construction method of the concrete panel to be laid on, the arbitrary one concrete panel and the other adjacent concrete panel are laid on the beam leaving a gap between each of the long side edge faces. At this time, after a sheet gasket made of a silicone rubber composition is adhered to any of the long side small edge surfaces via an adhesive,
A means is adopted in which the other one concrete panel is forcibly brought close to the side of the one concrete panel and the planar gasket is compressed by the both concrete panels.

[0006]

The function of the present invention will be described. First, the short-side ends of a plurality of concrete panels are placed on the beams of a building, respectively. A sheet gasket made of a silicone rubber composition having a thickness of 1 cm or less is attached to the edge of the long side of any one concrete panel through an adhesive. Another concrete panel to be laid adjacent to the concrete panel is laid on the beam in the gap between the facing facets. Then, after fixing one of the concrete panels to the beam, the other concrete panel is forcibly brought closer to the former concrete panel side by using a jig. The extent to which the sheet gasket is pressed is such that the planar gasket is compressed, and a pressing force acts on the foreground surface in the gasket. Then, even if an unequal load is applied on the adjacent concrete panels, the shearing force is less likely to occur because the compressive force acts on the planar gasket. In other words, the force against the occurrence of unsteady ground works.

The sheet gasket is made of a silicone rubber composition, and the gap between the panels is as small as 1 cm or less, and the width thereof is as wide as the thickness of the edge of the concrete panel, so that it is completely burned by a flame. Not only does it take a considerable amount of time, but it also becomes a ceramic when fired, so the floor structure laid in this way exhibits some fire resistance even in the event of a fire.

[0008]

EXAMPLE Next, an example in which the present invention is embodied in a floor structure constructed by laying ALC panels on a beam of a building will be described with reference to FIG. In FIG. 1, a plurality of ALC panels 1 and 2 are laid on a beam (not shown) of a building with both ends of their short sides placed. ALC panel 1,
Each of the long side edge faces 1a, 2a of 2 is a plane perpendicular to the whole, but these edge faces 1a, 2a and ALC
A corner portion C1 formed by the surfaces 1b and 2b of the panels 1 and 2
0 and C20 are chamfered to form inclined surfaces 1c and 2c. Similarly, the back surfaces 1d and 2d of the ALC panels 1 and 2
Slopes 1e and 2e are also formed on the side corners C11 and C21.

A sheet gasket 3 made of a silicone rubber composition is sandwiched in the gap (C) between the two long side edge faces 1a, 2a. As the silicone rubber composition, a composition comprising diorganopolysiloxane, silica powder, ferrite powder, ceramic fibers, a ceramizing raw material such as platinum, and a curing agent is used.

The shape of the sheet gasket 3 is A
The LC panels 1 and 2 have a shape and a width corresponding to the entire long side edge face 1a, 2a excluding the inclined faces 1c, 2c, 1e, 2e. The planar gasket 3 has a thickness of 3 to
The thing of about 7 mm is used.

The following procedure is performed to form the dry floor structure having the above structure. A plurality of ALC panels 1 and 2 are temporarily laid to form a floor on the beam of the building. In this case, the distance between the ALC panels 1 and 2 is preferably 1c.
Open about m. Then, first, the short-side end of any one ALC panel 1 is fixed onto the beam by a known means. An adhesive is applied to the long side small edge surface 1a of the ALC panel 1 or one surface of the sheet gasket 3 fixed to the small edge surface 1a to fix the sheet gasket 3 to the long side small edge surface 1a.

In this way, the other ALC panel 2 is forcibly moved toward the ALC panel 1 to which the sheet gasket 3 is fixed, toward the sheet gasket 3 side by using an appropriate jig. Then, while fixing the short-side end portion of the ALC panel 2 to the beam in the same manner as described above, two ALC panels are fixed.
The planar gasket 3 is strongly pressed between the panels 1 and 2.

Then, the sheet gasket 3 is compressed in its thickness direction, and the repulsive force of the sheet gasket is internally present. Due to the repulsive force, not only the ALC panels 1 and 2 and the planar gasket 3 are constantly in close contact with each other, but also the planar gasket 3 is very thin and there is an inherent repulsive force. Even when an unequal load is applied on the two ALC panels 1 and 2, the shear force is less likely to act on the planar gasket 3. Therefore, both ALC panels 1, 2
The effect that the unevenness is less likely to occur is exhibited.

The sheet gasket 3 is made of a specific silicone rubber composition and has an adjacent AL.
The gap between the long side edge faces 1a and 2a of the C panels 1 and 2 is 1
It is a narrow gap of cm or less, and the width of the sheet gasket 3 is A
Since the LC panels 1 and 2 are also thick, even if the building encounters a fire and the flames come into the gap, it takes a considerable time for the planar gasket 3 to burn, and the gasket will burn. To make it ceramic. Therefore, the floor structure of this embodiment exerts considerable fire resistance.

According to this embodiment, when a floor structure is to be constructed in a building, a necessary number of ALC panels are placed on the beams in advance and first the short side of any one ALC panel 1 is placed. The other end of the ALC panel 2 which is to be laid next to it is fixed to the fixed A
By pulling the gasket 3 toward the LC panel 1 side and compressing the planar gasket 3 and fixing the short side end of the other one ALC panel 2 to the beam without using a wet material such as mortar. Can build a floor structure.

The present invention follows the fundamental technical idea and can be implemented by partially modifying the mode described in the above embodiment as follows, within the range in which the effect is not significantly impaired. (1) An adhesive may be applied to both sides of the sheet gasket. You may apply the adhesive agent on the long side edge of the ALC panel. (2) In this mode, in order to further suppress the occurrence of unevenness, the width of the sheet gasket 2 is made as large as possible, and then, as shown in FIG.
A so-called interlocking structure in which the long side edge surfaces of the ALC panels 1 and 2 shown in FIG.

(3) In order to further improve the fire resistance, FIG.
As shown in (4), a concave portion can be formed in the middle abdominal portion on the long side small edge surface, and a planar gasket having a thickness (D) of 1 cm or less can be interposed in the concave portion. Also in this case, the planar gasket is compressed so that the repulsive force is inherently present, and the long side edge surfaces of the portions where the planar gasket does not exist are brought into contact with each other to minimize the gap. The planar gasket may be hollow.

(4) The silicone rubber composition contains, as a main component, a diorganopolysiloxane whose both ends are blocked with an inactive organic group, and a silica powder, a ferrite powder, an inorganic fiber which is a raw material of ceramics is added to the composition. Also, any silicone rubber composition can be used as long as it contains at least a curing agent and can be fired into a ceramic without penetrating the gap even if it encounters a flame in a narrow gap between the ALC panels.

[0019]

As described above in detail, the present invention exhibits an excellent effect that the fire resistance of the dry floor structure can be improved while improving the construction efficiency in the dry floor construction method.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view of an embodiment according to the present invention.

FIG. 2 is a partial vertical cross-sectional view showing another mode different from the above embodiment.

FIG. 3 is a partial vertical cross-sectional view showing another embodiment as well.

[Explanation of main symbols]

 1 1 concrete panel 2 1 other concrete panel 1a Long side small edge face 2a Long side small edge face 3 Facet gasket C Gap

Claims (1)

[Claims] 1. A dry floor construction method for a concrete panel to be laid in a plane by placing and fixing a plurality of concrete panels on both ends of their short sides on a beam of a building, When laying a concrete panel (1) and another one of the adjacent concrete panels (2) on the beam, leaving a gap (C) between the long side edge faces (1a, 2a) thereof, respectively. After a sheet gasket (3) made of a silicone rubber composition is attached to any of the long side small edge surfaces via an adhesive, the other concrete panel is attached to the one concrete panel. A dry floor construction method for a concrete panel, characterized in that the planar gasket is forcedly pressed and compressed by the both concrete panels.