JPH07286390A - Extrusion-molded cement board and partition wall construction method using the board - Google Patents

Abstract

PURPOSE:To eliminate joints required in the case when used as a partition wall by extrusion-molding a tapered board with both ends of a board in the direction alone the width of the board and burying the tapered area with putty. CONSTITUTION:An extrusion-molded cement board 1 has a tapered area provided with a plurality of recessed grooves 31 along the longitudinal direction on both front and rear surfaces. An adhesive is filled up on a recessed strip 4 of a subsequent extrusion-molded cement board 1 and fitted into a projected strip 3 of the extrusion molded cement board 1 vertically installed to a floor and a slab by way of a T type metal fitting. Then, with the T type metal fitting, the extrusion molded cement board 1 is mounted to the floor and the slab and connected, thereby forming a wall surface. The tapered area 30 on the front and rear surfaces of the wall are coated with alkali-proof primer and surface-treated with putty 40 for smooth and flush surface preparation. The whole front and rear surface of the cement board is face-coated with inorganic group plasma where they are pasted with an adhesive-coated vinyl-based cloth, thereby finishing a partition wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel extruded cement board and a partition wall construction method using the same.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing inner and outer walls of a building, an extruded cement board 1 having a cross section as shown in FIG. 7 and having a plurality of parallel through holes 2 extending in the longitudinal direction.
Is used. This extruded cement board 1 is hollow due to its characteristics of its cross-sectional shape, is lighter in weight, has a high bending strength when a wall is constructed, and fills the hollow portion with a non-combustible heat insulating and sound insulating material such as rock wool to improve the performance of the wall. There are many advantages such as the improvement of the structure, the insertion of the wiring cord in the hollow portion, and the short construction period required for forming the wall surface.

Conventionally, when a partition wall is constructed by using such an extrusion-molded cement board 1, as shown in FIG. 8, a groove 4 and a groove 3 provided on both end surfaces in the width direction of the board. Were sequentially fitted to form a wall surface with a real structure. In this case, the sealing material 13 made of an elastic material is attached to the joint portion.
Joint processing is performed using the backup material 14, and boards, tiles, cloths, etc. are attached to the wall surface as a wall surface finish. This type of wall surface finishing has the advantage that the floor area of the room can be widened in the case of partition walls between multiple dwellings, and only the cloth needs to be replaced during renovation, which shortens the construction period and reduces costs. Many. However, there is a problem in that the traces of joints are likely to appear on the wall surface subjected to the cloth tension, and the aesthetic appearance of the wall surface is impaired.

Further, as shown in FIGS. 9 and 10, the extrusion-molded cement board 1 is attached to the floor 11 and the slab 12 or the beam 21 by inserting a G into the through hole 2 at the widthwise end of the extrusion-molded cement board 1.
Insert the clip-shaped clip fitting 15 or the U-shaped clip fitting 16, and insert the anchor bolt 1 into the hole on the bottom of the clip fitting.
It was fixed to the floor 11 through 7. Further, the cover plate 20 is fixed in the gap between the slab 12 and the plate 1 by the anchor bolts 17. In this way, the extrusion-molded cement board 1 is fixed to the floor 11 and the slab 12, and the extrusion-molded cement board 1 is attached in the same manner.

However, the clip fittings 15 and 1
Since the attachment using No. 6 actually depends on the frictional force between the inner surface of the through hole in the extrusion-molded cement plate and the clip fitting, it cannot be said that the degree of fixation of the extrusion-molded cement plate is necessarily high. As one of the solutions to this problem, a structure in which shaped steel is inserted over the entire length of the through hole 2 near both ends in the width direction of the extrusion molded cement plate is conceivable, but this mounting structure increases the material cost, There is a problem that the installation cost is high because the installation is not one-touch like a clip metal fitting and it takes time.

Further, unlike the case of the outer wall, the mutual fitting portions of the above-mentioned conventional extruded cement boards are not fixedly attached to the base steel frame or the like. Therefore, if there is a slack in the actual (honzan) portion where the extrusion-molded cement boards are fitted to each other using the recessed ridges 4 and the ridges 3 on both side surfaces in the longitudinal direction of the extrusion-molded cement board, an external load is applied. However, there is a problem that it tends to be a weak point.

In recent years, partition walls have been frequently remodeled. Conventionally, the partition wall often uses board building materials and is cross-finished, but when the board building materials are reformed, it is necessary to re-bond not only the cloth but also the base material board.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and aims to solve the following problems. (B) When the partition wall surface is subjected to a cross tension finish, it is possible to improve that a joint wall between extrusion-molded cement boards is apt to appear on the finished surface and the aesthetic appearance of the wall surface is impaired, and a satisfactory large wall cannot be finished. (B) When fixing the extruded cement board to the floor or slab, G-shaped clip fittings or U-shaped clip fittings have been used. However, the attachment force of the extruded cement board is not always required when mounting using such clip fittings. It is not high, and the displacement of the extruded cement board tends to occur due to external stress such as an earthquake. The present invention provides a fixing method which improves this.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and improves the conventional extruded cement board so that both ends in the width direction are thin on the outside in the width direction. Provided is an extrusion-molded cement plate, characterized in that a taper portion is provided, and a plurality of concave grooves are provided in the slope of the taper portion in the plate axial direction. On both end faces in the width direction of this extruded cement plate, as in the conventional case, a convex strip portion forming the fruit and a concave strip portion engaging with the convex strip portion are formed.

The method of the present invention is characterized in that the extrusion-molded cement plates are connected in series to form a wall surface, the taper portion is puttyed to form a flush wall surface, and then a cloth is attached to the entire wall surface for finishing. Is a method for constructing a partition wall using an extruded cement board. In this partition wall construction method, the ends of the ridges on the widthwise end faces of the extruded cement plate that are in contact with the ceiling or floor, respectively, are in contact with the U-shaped standing piece that is fitted onto the ridge and the ceiling or floor. A T-shaped metal fitting consisting of a flat plate is attached, and an adhesive is filled in the recessed ridges of the end faces of the adjacent extruded cement plates over the entire length in the longitudinal direction. The recessed ridges and the ridges are fitted and extruded. It is preferable to form a cemented cement board to form a wall surface.

[0011]

The extrusion-molded cement board of the present invention is a die having a taper portion in advance, and a board having taper at both ends in the board width direction is extruded. This extruded cement board prevents the appearance of joint marks on the cloth by filling the taper portion with putty. That is, when this extruded cement board is used as a partition wall, the taper portion is filled with putty of a synthetic resin such as vinyl acetate resin mixed with an inorganic filler such as silica sand to eliminate joints. More preferably, the putty is reinforced with a non-woven fabric of synthetic fibers. The putty is smoothed with a trowel to give a smooth surface, and the smooth surface is covered with a joint tape made of paper or the like to prevent the putty from peeling or becoming thin.

In order to improve the bite of the putty, the extrusion molded cement plate of the present invention is provided with a plurality of concave grooves in the taper portion. This groove can be formed at the time of extrusion molding. Next, in the partition wall construction method of the present invention, the plate is securely fixed to the floor and the slab using the T-shaped metal fitting. This T
The shaped metal piece is composed of a U-shaped standing piece that is externally fitted to a convex strip on the end face in the width direction of the extruded cement board and a flat plate that is in contact with the ceiling or floor. The T-shaped metal fittings are fixed to the projections on the end faces in the width direction of the extruded cement board with tapping screws, the bottom plate portion of the T-shaped metal fittings is applied to the floor and the slab and fixed to the upper and lower slabs with concrete tacks.

Next, an inorganic type, for example, silica type refractory adhesive is filled in the concave stripes of the adjacent extruded cement board, and the convex stripes on the side surfaces at both ends in the longitudinal direction of the extruded cement board set up in advance. Then, the extruded cement board is attached to the upper and lower slabs and the floor by using the T-shaped metal fittings in the same manner as described above. In the same manner, the extruded cement boards are continuously formed to form the wall surface.

The partition wall made of the extruded cement board of the present invention also has an excellent merit for reforming. Since the plate has a thickness of about 50 to 60 mm and high strength, it can be finished by reattaching a vinyl cloth during reforming. When the board building material is reformed, if the vinyl cloth is peeled off, the laminated paper on the surface will peel off together with the cloth, so the board cannot be reused. Therefore, the board must be replaced, and the remodeling is troublesome, laborious, and costly. On the other hand, the partition wall made of the extruded cement board of the present invention has an excellent effect that only the replacement of the cloth is required.

According to the present invention, in the construction of a partition wall with a cross-bonded finish, a joint wall which is a joint between extrusion molded cement plates does not appear on the finish wall surface, and a partition wall having a smooth appearance is constructed. Since the T-shaped metal fittings were used to mount the extruded cement board and the floor and slab were fixed, and the mutual fitting of the boards was applied with an adhesive, the extruded cement board was securely fixed.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an extrusion-molded cement board 1 according to an embodiment of the present invention. This extrusion-molded cement board 1 has a taper portion 30 having a plurality of concave grooves 31 on the front and back surfaces along the longitudinal direction.

The taper portion 30 is provided in order to form a smooth finished surface by filling the putty without exposing joint marks which are joints of the extrusion molded cement board 1 on the partition wall surface. The recessed groove 31 of 30 is for allowing the putty to bite into the extrusion-molded cement plate to improve the adhesion. This extrusion-molded cement board 1 is manufactured by an extrusion molding machine using a mold having a cross section shown in FIG. The slope of the taper portion 30 may be determined while keeping in mind that the putty treatment is easy to perform and does not affect the strength of the extrusion-molded cement plate, but it is not preferable if it is too gentle or steep. From the experience of construction, (10-25) / 100 is good. It is sufficient if there is a width required to put out the smoothness of the effective wall surface of the taper portion by putty treatment,
It is not necessary to take it too long, and if it is too short, it will be difficult to obtain a smooth wall surface. The width is preferably about 20 to 50 mm.

FIG. 3 shows a novel T-shaped fitting 5 used in the present invention.
It is a perspective view of 0. This T-shaped metal fitting 50 is a combination of a U-shaped standing piece 51 and a bottom plate 53 in a T-shape.
The U-shaped standing piece 51 has such a size that it can be externally fitted to the ridge at the end of the extruded cement board 1 with a minute gap, and has a hole 52 for tapping screw. The bottom plate 53 has holes 54 for concrete tacks.

The bottom plate 53 of the T-shaped metal fitting 50 is inserted between the two longitudinal end faces of each of the two extrusion-molded cement plates 1 connected in series and the floor or slab. Therefore, it also has a function of suppressing the unevenness of the extruded cement plate 1 which is erected.
The bottom plate 53 of the T-shaped bracket is T-shaped. It is not preferable to make it L-shaped because the wall surface of the extrusion-molded cement plates 1 connected to each other tends to become uneven. Since the T-shaped metal fitting strongly fixes the extruded cement board 1 to the floor 11 and the slab 12, it is not preferable that its size is too small. It is preferable that the bottom plate has a length of 100 mm at both ends, and the U-shaped part has a width of 30 mm, a side face depth of 14 mm, and a height of about 80 mm in consideration of the dimensions of the ridge portion 3 on one side face in the longitudinal direction of the plate 1. Also the bottom plate 8
Is 32 mm in order to prevent it from being exposed from the extruded cement plate 1 to be erected, and to make it larger than the dimension of the through hole 2 in the plate in the plate thickness direction so that it can receive the extruded cement plate 1 to be erected. Is preferred. Also, the thickness is 2.3-
3.2 mm is sufficient.

FIGS. 4A, 4B and 4C show a T-shaped metal fitting 5
Fig. 5 is a three-sided view showing the attachment when the extrusion-molded cement board 1 is fixed to the floor 11 using 0. Fig. 5 shows that the T-shaped metal fitting 50 is inserted into the ridge 3 of the extrusion-molded cement board 1 and the board is fixed. FIG. 6 is a side view showing a state in which the T-shaped metal fitting 50 is fitted into the ridge portion 3 of the extrusion molded cement board 1 and the board is fixed to the slab 12 on the ceiling.

The partition wall construction method using the extruded cement board 1 of the present invention will be described step by step. First, the extruded cement board 1 shown in FIG. 1 is replaced with the T-shaped metal fitting 50 shown in FIG.
Then, it is attached to the floor 11 and the slab 12 as shown in FIGS. The bottom plate 53 of the T-shaped metal fitting 50 is inserted into both end faces of the extruded cement plate in the longitudinal direction, and is fixed to the floor 11 and the slab 12 by concrete tacks 56.

In the extrusion-molded cement board 1, the U-shaped standing piece 51 of the T-shaped metal fitting 50 is fixed with a tapping screw 55, and the floor 1
The bottom plate 53 is fixed to the slab 12 with the concrete studs 56. Then, the concave streak 4 on one side surface in the width direction of the next extruded cement board 1 is filled with an inorganic type, for example, silica-based refractory adhesive, and the one side surface in the width direction of the extruded cement board 1 that has been installed upright Fits on the ridge 3. Then T
This extruded cement board 1 is attached to the floor 1 using the metal fittings 50.
1 and slab 12. In the same manner, the extruded cement boards 1 are connected in sequence to form the wall surface.

Next, the taper portion 30 on the front and back surfaces of this wall surface
As shown in FIG. 2, a putty 40, for example, a plaster-based plaster or the like is used to perform a smooth putty treatment, and a paper tape is pressed on the putty to make the wall surface flush. BACKGROUND ART Conventionally, when a partition wall is generally finished using a board building material such as gypsum board, a construction method in which a joint portion is putty-treated and a base tape is finished with a paper tape is known. In this case, the board building material and putty are of the same quality. Since gypsum is a neutral or slightly acidic substance, if the plaster plaster of the present invention is directly used as a putty in the cement plate of the present invention, the putty cannot be attached and held on the surface of the cement plate due to the alkali of the cement and peels off. Therefore, in the present invention, the putty treatment is performed after the cement plate is previously coated with an alkali-resistant primer such as vinyl acetate emulsion or acrylic emulsion. In this way, the gypsum plaster adheres well to the cement board. Recessed groove 3 of the taper part
No. 1 is necessary to obtain the effect of complementing the adhesion of this putty to the cement board.

Next, the entire front and back surfaces of the cement plate are top-coated with an inorganic plaster such as gypsum, and a vinyl-based cloth coated with an adhesive is applied and finished to complete the partition wall.
Vinyl acetate or the like is generally used as an adhesive when the cloth is stretched. Considering the ease of reforming, a suitable material that allows the cloth to be easily reattached is preferable, and for example, a starch-based adhesive can be used.

[0025]

As described above, the extruded cement board of the present invention is suitable for the construction of partition walls, and the joint traces do not appear on the surface when cross-attached, and are suitable for the large wall partition construction method and are quick and beautiful. A partition wall can be formed. In addition, the extrusion-molded cement board can be fixed to the floor and slab without slack, with little displacement deviation, and with no joint breakage. Further, it is possible to easily and quickly perform partition reform.

Further, since the T-shaped metal fitting is used, both the extrusion-molded cement board and the floor and slab can be easily and surely fixed. Further, since the cloth is used, there is an advantage that the partition wall can be reformed easily and quickly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an extruded cement board according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a joint portion of the embodiment.

FIG. 3 is a perspective view of a T-shaped metal fitting used in the present invention.

FIG. 4 is a three-view drawing showing the attachment of the extruded cement board of the embodiment.

FIG. 5 is a perspective view showing the attachment of the extruded cement board of the embodiment.

FIG. 6 is a front view showing the attachment of the extruded cement board of the embodiment.

FIG. 7 is a cross-sectional view of a conventional extruded cement board.

FIG. 8 is a cross-sectional view of a partition wall surface formed by a conventional extrusion molded cement plate.

FIG. 9 is a vertical cross-sectional view showing attachment of a partition wall by a conventional extrusion molded cement plate.

FIG. 10 is a vertical cross-sectional view showing the attachment of a partition wall using a conventional extrusion molded cement plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Extruded cement board 2 Through hole 3 Convex part 4 Concave part 11 Floor 12 Slab 13 Sealing material 14 Backup material 15 Clip metal fittings (G type) 16 Clip metal fittings (U type) 17 Anchor bolt 20 Cover plate 21 Beam 30 Taper Part 31 Recessed groove 40 Putty 50 T-shaped metal fitting 51 U-shaped standing piece 52, 54 Screw hole 53 Bottom plate 55 Tapping screw 56 Concrete tack

Claims (3)

[Claims] 1. A taper portion having ridges and valleys over the entire length in the longitudinal direction at both ends in the width direction and having a thin plate on the outside in the width direction is provided. An extrusion-molded cement board, which is provided with a groove of a book. 2. The extrusion-molded cement board according to claim 1 is continuously formed to form a wall surface, putty is applied to the tapered portion to make the wall surface flush, and a cloth is attached to the entire surface of the wall surface for finishing. A method for constructing a partition wall using a characteristic extruded cement board. 3. The U-shaped standing piece externally fitted to the ridge and the ceiling or floor are respectively attached to the ends of the ridges at both ends in the width direction of the extruded cement plate which are in contact with the ceiling or the floor. A T-shaped metal fitting consisting of a flat plate is attached, an adhesive is filled in the recessed portion of the adjacent cement plate over the entire length in the longitudinal direction, and the recessed portion and the protruding portion are fitted to connect the extruded cement plate. The partition wall construction method using an extrusion-molded cement board according to claim 2, wherein the partition wall construction is performed to form a wall surface.