JPH0547191U - Insulated floor slab - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lightweight, non-combustible, easy-to-manufacture heat-insulating floor slab through which wiring can be passed. [Structure] A crushed particle of a foamed plastic molded product, cement, and a flat plate 1 having a predetermined size and thickness formed by using water as a main raw material, and extending along the upper edge of at least two sides of the flat plate 1 that intersect. A stepped recess 2 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat insulation floor slab for a floor such as a building in which a floor for wiring can be constructed by laying it down.

[0002]

[Prior Art]

 As a floor slab for passing wiring, a square slab of 30 to 50 cm, made of aluminum die cast or plastic, is known.

[0003]

[Problems to be solved by the device]

 In the above conventional floor slab, since the wiring is passed under the lower surface of the floor slab, it has a number of legs dispersed on the lower surface, which complicates the mold to be manufactured and increases the cost. Moreover, even if it is made of aluminum die-cast or plastic, it has a considerable weight, so the work of laying it out is a heavy labor.

[0004]

[Means for Solving the Problems]

 The present invention was developed to obtain a non-combustible heat insulation floor slab that is extremely lightweight, has excellent heat insulation, and can be easily molded with a simple mold. It is characterized by comprising a flat plate having a predetermined size and a thickness formed by using water as a main raw material, and forming a stepped recess along the upper edge of at least two sides of the flat plate intersecting each other.

[0005]

【Example】

 In each of the illustrated embodiments, reference numeral 1 denotes a quadrangular plate having a size of, for example, 450 mm × 450 mm and having a thickness of about 50 mm, which is a flat plate of an insulating floor slab according to the present invention. The stepped recess 2 is provided along the upper edge, and the heat insulation floor slab of FIG. 2 has the stepped recess 2 only along one upper edge of two sides of the flat plate which intersect at right angles. The depth D of this step-shaped recess 2 is about 20 mm, and the width W is about 15 mm. The flat plate 1 is formed of a mixture of styrene foam non-combustible particles, cement, and water.

The non-combustible particles 3 of styrofoam are obtained by crushing a molded product of styrofoam with a crusher, and crushed particles 4 having a particle size of 10 mm or less are mixed with cement and water to coat the surface with cement paste, and if necessary. Next, it is a mixture with sand, and the Styrofoam itself burns easily, but the solidified layer 5 of cement paste covers the surface of the crushed granules 4, so the crushed granules become the core even when they are brought into contact with a high-temperature flame. No. 4 burns and does not burn. After coating the surface with cement paste and mixing it with sand before the cement paste hardens, sand 6 adheres to the surface of the crushed particles by the cement paste, and the cement paste solidifies due to the solidification of the cement paste. In this way, if the surface of the non-combustible particles 3 of styrofoam is covered with sand, irregular irregularities are created on the surface of the particles, and when the flat plate 1 is molded, the cement for flat plate molding and the non-combustible particles are The bond strength is increased, and the strength of the flat plate can be improved.

A concrete material for immediate demolding in which the slump value is 0 and fluidity is 0 by mixing the above-mentioned non-combustible particles 3 of styrofoam, cement, water, a small amount of water reducing agent and an instant demolding agent in a mixer. Or, make a solid concrete material that hardens in about 4 to 5 hours. The mixing ratio is about 100 to 250 kg of cement and about 50 to 80 liters of water with respect to incombustible particles of styrene foam having a volume of 1 m ³ .

The concrete material is filled in a mold having a convex strip that forms a stepped recess 2 on the bottom, and then lightly pressed to form a flat plate 1. The form may be vibrated when the concrete material is filled into the form or when it is pressed. When the concrete material hardens, it is demolded from the form, cured, and dried to obtain the finished product. Incidentally, artificial lightweight aggregate such as pearlite may be mixed with the concrete material for forming the flat plate 1, and the weight of the product is further reduced. Further, sand may be mixed, and then the strength of the flat plate 1 is increased.

FIG. 3 shows a state in which the heat insulation floor slabs of FIG. 1 are lined up and covered with a veneer board 7, and FIG. 4 shows the heat insulation floor slabs of FIG. 2 lined up and covered with a veneer board 7. Shows the state of In both cases, the step-shaped recesses 2, 2 facing each other along the upper edge of the adjacent heat insulation floor slabs form a groove 8 having a depth of 20 mm and a width of 30 mm, through which wiring can be passed. In the case of the heat insulation floor slab of FIG. 1, the distance between the intersections of the crossways of the grooves 8 is equal to the length of one side because the stepped recesses 2 are provided on the four sides, and in the case of the heat insulation floor slab of FIG. Has a stepped concave portion 2 having only two sides, and is equal to twice the length of one side. It is preferable that the corners 2'at which the stepped concave portions 2 intersect have a rounded shape as shown in the drawing so that the wiring can be bent and passed therethrough. Then, by shifting the joint 7'of the veneer plate (having a thickness of about 12 mm) covering the top from the groove 8, the veneer plate becomes a lid for the groove 8 and the load from above is laid down below. It is possible to disperse into multiple heat insulation floor slabs. The veneer plate 7 may have the same size as the flat plate 1.

[0010]

[Effect of the device]

 As is clear from the above, the heat insulation floor slab of the present invention does not include coarse aggregate gravel and fine aggregate sand that are generally used for ordinary concrete materials, and the styrofoam crushed grains serve as the core. Non-burnable particles replace gravel and sand. Moreover, even if sand is used, it can be used in a small amount, so it is extremely lightweight, and due to the excellent heat insulating and sound absorbing properties of Styrofoam, it becomes a heat insulating floor plate with a great heat insulating effect and sound absorbing effect.

[0011] Furthermore, since the crushed polystyrene foam particles themselves are easy to burn and have elasticity, they are mixed with cement and water to make a concrete material for immediate demolding or solid kneading, which is filled in a mold and pressed. In this case, when the press is released, it is elastically restored and does not have a predetermined size. However, in the present invention, the surface of the crushed granules of Styrofoam is covered with the solidified layer 7 of the cement paste layer to make it non-combustible. The plate is non-combustible, but the flat plate 1 can be formed to the desired size. Since it can be easily cut by cutting with an electric grinder type cutter knife or an electric saw, it is possible to cut the corners of the intersections of the crossroads of the groove 8 and bend the wiring greatly. Further, since the groove 8 is open to the upper surface of the floor slab, the work of passing the wiring can be easily performed. Furthermore, it gives a new application to the Styrofoam molding, which is difficult to dispose of, and can be effectively reused.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of heat insulation according to the present invention.

FIG. 2 is a perspective view of a second embodiment of the heat insulation floor slab of the present invention.

FIG. 3 is a plan view showing a state in which the heat insulation floor slabs of FIG. 1 are laid side by side.

FIG. 4 is a plan view of the heat insulation floor slabs of FIG. 2 laid side by side.

FIG. 5 is an enlarged cross-sectional view of non-combustible particles of expanded polystyrene.

[Explanation of symbols]

 1 Flat plate 2 Stepped recess 7 Veneer plate 8 Groove for wiring

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Claims (1)

[Scope of utility model registration request] 1. A crushed particle of a foamed plastic molded product, cement, and a flat plate molded from water as a main raw material and having a predetermined size and thickness, along the upper edge of at least two sides where the flat plate intersects. A heat insulation floor slab having stepped recesses.