JP2007162325A - Thin alc reinforcing mat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing mat for a thin ALC panel capable of having strong bending strength and having a good product yield rate without having no exposure of the reinforcing mat in the case of manufacturing. <P>SOLUTION: The reinforcing mat for the thin ALC is so constituted that it consists of a plurality of wire rods arranged in the shape of a grating at right angles to the longitudinal direction of the ALC panel and the direction of the width each other, predetermined positions of the wire rods arranged in the longitudinal direction of the ALC panel are curved and that a supporting pin insertion hole passing through the direction of the width of the ALC panel is provided in the center position of the thickness of the reinforcing mat. The wire rods arranged in the longitudinal direction of the ALC panel are curved to each other in an opposite direction at suitable intervals, and the intersections with the wire rods arranged in the shape of a grating are fixedly welded. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a reinforcing material for an ALC panel constituting a wall, roof, ceiling, etc. of a building, and more particularly to a reinforcing material for a thin ALC panel having a thickness of less than 75 mm used for an outer wall of a wooden building.

Lightweight cellular concrete (hereinafter referred to as ALC) panels are widely used for building walls, floors, roofs, and the like. Usually, the thickness of an ALC panel used as an outer wall of a small-scale building such as a detached house is less than 75 mm. The ALC panel is fastened to a wooden trunk edge or steel material as a base with wood screws or tapping screws at a rate of about 6 to 12 pieces / m ² .
The outer wall of wooden houses and the inside of thin ALC panels with a thickness of less than 75 mm used for fireproof coating of steel frames are considered so that the panel can be easily cut with a circular saw while ensuring the strength of the panel. Reinforced mats are embedded. As the reinforcing mat, a metal lath (for example, refer to Patent Document 1) having a wire diameter of 0.8 mm to 1.0 mm and an opening of about 16 × 32 mm, and a reinforcing bar having a wire diameter of about φ1.0 to φ3.0 mm in a lattice shape. A mat (for example, see Patent Document 2) in which the width direction of the ALC panel is formed into a corrugated shape by being assembled and welded is used. FIG. 4 is an external perspective view showing an example of a conventional reinforcing mat for a thin ALC panel.
Japanese Patent Laid-Open No. 06-297442 Japanese Patent No. 2663330

  Among them, the thin ALC panel in which the metal lath is embedded has an advantage that the wire diameter of the mat is thin and can be easily cut at the time of construction, but the bending strength is weak. For example, a thin ALC panel having a thickness of 50 mm has a length of 2. Products with a length exceeding 4 m cannot be manufactured, and when this metal lath is set in a panel manufacturing formwork, it is necessary to sandwich the width direction of the metal lath with a pair of support pins. If the hole becomes one of the causes of strength reduction or the support pin is removed before the raw material slurry is cured in order not to leave this trace, the position of the metal lath will be displaced and the position accuracy will be deteriorated. There were problems such as being exposed and becoming defective.

  Further, a reinforcing mat 12 having a corrugated reinforcement mat 12 formed by welding reinforcing bars as shown in FIG. 4 and arranging two or more vertical bars parallel to the same plane and alternately in steps. ALC panel is strong in bending strength, and can produce long panels of 3m or more. When a reinforcing mat is set in a panel manufacturing formwork, it is supported at the center of the corrugated mat in the thickness direction. Since the pins are inserted, there is no decrease in the bending strength of the panel due to the punched holes, and excellent characteristics can be obtained. However, since the thickness of the reinforcing mat is increased by wave forming, the cover thickness of the thin ALC panel is reduced with respect to the thickness of the reinforcing mat. Moreover, as shown in FIG. 4, it is a structure which sets a support pin using the mat | matte thickness produced by the level | step difference of vertical stripes, and since it shape | molds so that the whole mat | matte may become uniform thickness, it uses it. The mat cannot be made thinner than the diameter of the support pins. When manufacturing ALC panels, the reinforcing mat moves to the side of the formwork depending on the fluid pressure of the slurry when pouring the ALC raw material slurry into the panel formwork set with the reinforcing mat and the slurry behavior during foaming. However, it is known that the reinforcing mat formed into a corrugated shape due to this phenomenon has a problem that the reinforcing mat is exposed to the panel surface even if the reinforcing mat is slightly moved due to the small cover thickness. . In addition, even if an attempt is made to reduce the mat thickness by thinning the support pin in order to overcome the above problem, the rigidity of the pin is lowered and the pin itself is affected by the fluid pressure of the slurry and the slurry behavior at the time of foaming. There was a problem.

  Furthermore, the metal lath has a low bending strength in the out-of-plane direction and is easily bent. Further, even if the reinforcing mat is formed into a corrugated shape by welding reinforcing bars in a lattice shape, if the diameter of the wire used is small, the bending strength in the out-of-plane direction decreases when the mat thickness is extremely reduced. At the time of ALC production, it was very difficult to handle a mat having low bending strength, resulting in a decrease in productivity.

  The present invention was made in order to solve the problems caused by the flow pressure of the raw material slurry during production and the slurry behavior during foaming without impairing the bending strength of the thin ALC panel. An object of the present invention is to provide a thin ALC reinforcing mat that does not expose the reinforcing mat at the time and has a good product yield.

In order to solve the above problems, the thin ALC reinforcing mat of the present invention is a reinforcing mat made of a wire embedded in a thin ALC panel having a thickness of less than 75 mm, and the mat is arranged in parallel with the length direction of the panel. The reinforcing mat is composed of a plurality of straight vertical bars and a plurality of horizontal bars arranged orthogonal to the vertical bars, and penetrates in the width direction of the ALC panel at the center of the mat thickness direction. The support pin insertion port is configured to be molded.
That is, the thin reinforcing mat of the present invention is a reinforcing mat embedded in the thin ALC panel, and is composed of a plurality of wires arranged perpendicular to each other in the length direction and the width direction of the ALC panel. A thin ALC reinforcing mat is provided in which a predetermined position of the wire arranged in the length direction is curved, and a support pin insertion port penetrating in the width direction of the ALC panel is provided at the central position of the reinforcing mat thickness.
By using a reinforcing mat having such a structure, the raw material slurry can be filled smoothly during production without impairing the bending strength, and when embedded in an ALC panel, the reinforcing mat is not exposed and has a low product yield. It can be an ALC reinforcing mat.

In the thin ALC reinforcing mat of the present invention, it is preferable that a plurality of wires arranged orthogonal to each other in the length direction and the width direction of the ALC panel are fixed to each other at an intersection.
This is to maintain the bending strength.
Moreover, it is preferable that the said support pin insertion port is comprised by the wire in which the predetermined position of the wire arrange | positioned in the length direction of an ALC panel was curved in the mutually opposite direction with respect to the thickness direction of an ALC panel.
This is to increase the holding force of the support pin.

In the thin ALC reinforcing mat of the present invention, at least one of the wires arranged orthogonal to each other may be formed in a corrugated shape.
This is because the strength of the reinforcing mat is increased and the support pin insertion opening can be easily arranged at the center of the thin ALC.

  According to the present invention, a plurality of straight vertical bars arranged in parallel to the length direction of the thin ALC panel, and a plurality of horizontal bars fixed to all the vertical bars perpendicular to the vertical bars. Since the reinforcing mat is configured such that a plurality of support pin insertion openings penetrating in the width direction of the ALC panel made of the vertical stripes are formed at the center of the mat thickness, the support has high rigidity. Since the mat thickness is minimized while using the pin, the cover thickness can be secured, so the side of the reinforcement mat formwork side due to the fluid pressure of the slurry when injecting the ALC raw material slurry and the slurry behavior during foaming Even if movement occurs, mat exposure to the panel surface does not occur.

Also, the thin ALC reinforcing mat is formed by corrugating the wire in the width direction of the ALC panel, combining the wire in which a part of the wire in the length direction of the ALC panel is curved, and other than the opening portion of the support pin insertion opening By making the mat thickness thinner than the mat thickness of the opening, it becomes possible to secure the bending strength of the mat in addition to the above-mentioned effects, and the handling of the mat becomes easy. It is possible to prevent the decrease.
That is, the thin ALC reinforced mat according to the present invention can arbitrarily set the opening of the support pin insertion port regardless of the thickness of the mat, and can use a support pin having high rigidity regardless of the thickness of the mat. The various effects described above can be obtained.

The thin ALC reinforcing mat of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a partially cutaway perspective view of an ALC panel in which a thin ALC reinforcing mat according to a first embodiment of the present invention is embedded, and FIG. 2 is an external perspective view in which a support pin is inserted into the thin ALC reinforcing mat. It is.
A thin ALC reinforcing mat 1 according to the present embodiment includes a plurality of straight horizontal stripes 3 arranged in parallel to the length direction of the panel and a plurality of vertical stripes arranged in a grid perpendicular to the horizontal stripes 3. This is a reinforcing mat composed of the lines 2. In the position corresponding to the second lattice from the left in the drawing of each vertical bar 2, each vertical bar 2 is curved, and a support pin insertion opening that penetrates in the length direction of the ALC panel at the center position of the reinforcing mat thickness 4 is provided. The direction in which the vertical stripes 2 are curved is alternately changed between the front side and the back side of the ALC panel every two lines. When the reinforcing mat is viewed from above, it can be seen that the curved vertical bars 2 swell on both sides and the support pin insertion port 4 penetrates in the width direction of the ALC panel. The vertical stripes 2 are not limited to two, and the bending direction may be changed alternately for every three or more. As shown in FIG. 2, a support pin 5 for connecting and fixing the ALC reinforcing mat is inserted into the support pin insertion port 4. Since the support pin 5 is supported by being sandwiched from both sides by the vertical bars 2 constituting the support pin insertion port 4, it can be firmly fixed.
It is desirable that at least two support pin insertion ports 4 are provided in each thin ALC reinforcing mat, preferably a plurality of locations.
The vertical bars 2 and the horizontal bars 3 are made of steel bars in a lattice pattern, and the intersections of the bars are welded and fixed to increase the strength.

  In the thin ALC reinforcing mat 1 configured as described above, the mat thickness of the portion other than the support pin insertion port 4 is the sum of the diameters of the vertical bars 2 and the horizontal bars 3, and for example, an iron wire having a diameter of φ1.2 mm is used as the wire rod. If so, the mat thickness is 2.4 mm. Accordingly, even when the thin ALC panel is used for a panel having a thickness of 75 mm or less, the mat thickness is minimized, and the cover thickness of the thin ALC reinforcing mat can be increased to the maximum.

 When the mat thickness is selected from the thickness and number of wires to ensure strength, when applied to a thin ALC panel with a thickness of 75 mm or less, the mat thickness is 70 mm or less and the thickness is 40 mm or less. When applied to an ALC panel, the mat thickness is preferably 30 mm or less. This is because exposure from the surface of the thin ALC panel does not occur and the effect of improving the strength is great.

  In addition, when injecting the ALC raw material slurry into the panel formwork in which the reinforcing mat is embedded, select a material and diameter supporting pins that have rigidity and can withstand the fluid pressure of the slurry and the slurry behavior during foaming. For example, there is no exposure of the reinforcing mat to the surface of the thin ALC panel even in the vicinity of the support pin insertion opening, smooth filling of the raw material slurry is achieved, and no defective product is generated.

(Second Embodiment)
FIG. 3 is a perspective view in which a support bar is inserted into a thin ALC reinforcing mat according to the second embodiment of the present invention.
In the thin ALC reinforcing mat 11 according to the second embodiment, the horizontal stripes 3 are formed into a corrugated shape, and when the vertical stripes 2 are combined in a lattice shape, they are combined in accordance with the curvature of the horizontal stripes 3 near the support pin insertion opening 4. It is. Thereby, the thickness change of the thin ALC reinforcing mat 11 is small over the entire surface.

When the thin ALC panel is made of wire with a thin wire diameter so that it can be easily cut with a circular saw, etc., the rigidity of the reinforcing mat itself is insufficient, and handling is necessary when manufacturing the reinforcing mat or setting the support pins. When there is a possibility that the performance may decrease, as shown in the present embodiment, the mat thickness direction is waved so that the thickness of the reinforcing mat other than the support pin insertion opening becomes a desired thickness with a certain thickness. By forming so as to be a mold, it is possible to ensure handling properties while maintaining the required strength.
At this time, the wave forming and the forming of the support pin insertion port 4 may be performed at the same time with a press molding machine, and the productivity is not lowered.

1 is a partially cutaway perspective view of an ALC panel in which a thin ALC reinforcing mat according to a first embodiment of the present invention is embedded. It is a perspective view which shows the state which set the support pin to the thin ALC reinforcement mat concerning the 1st Embodiment of this invention. It is a perspective view which shows the state which set the support pin to the thin ALC reinforcement mat concerning the 2nd Embodiment of this invention. It is a perspective view which shows the state which set the support pin to the conventional thin ALC reinforcement mat.

Explanation of symbols

1,11,12 Thin ALC reinforcement mat,
2 longitudinal bars,
3 transverse muscles,
4 Support pin insertion slot,
5 support pins,
10 Thin ALC panel

Claims (4)

  A reinforcing mat embedded in a thin ALC panel, comprising a plurality of wires arranged orthogonal to each other in the length direction and width direction of the ALC panel, and a predetermined wire rod arranged in the width direction of the ALC panel A thin ALC reinforcing mat comprising a support pin insertion opening which is curved in position and penetrates in the width direction of the ALC panel at the center of the reinforcing mat thickness.   The thin ALC reinforcing mat according to claim 1, wherein a plurality of wires arranged perpendicular to each other in the length direction and the width direction of the ALC panel are fixed to each other at an intersection.   The support pin insertion opening is formed of a wire material in which predetermined positions of a wire material arranged in the length direction of the ALC panel are curved in directions opposite to each other with respect to the thickness direction of the ALC panel. Item 3. The thin ALC reinforcing mat according to item 1 or 2. The thin ALC reinforcing mat according to any one of claims 1 to 3, wherein at least one of the wires arranged orthogonal to each other is formed in a corrugated shape.

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