JP2815747B2 - Glazed concrete panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glazed concrete panel used for an outer wall of a building or the like.

[0002]

2. Description of the Related Art Conventionally, a concrete panel has a reinforcing steel buried in a concrete base material. In this type of concrete panel, when glazed and fired or cooled, thermal stress is generated between the concrete base and the reinforcing steel due to the difference in thermal expansion coefficient between the two, and cracks occur in the concrete base It was easy. In order to absorb the thermal stress, there has been proposed a structure in which a metal stranded wire having elasticity is buried in place of the reinforcing bar (Japanese Patent Laid-Open No. 3-241144) .

[0003]

However, the stranded wire has a high flexibility, so that it is likely to be meandering, it is difficult to position the wire at a predetermined embedding depth , and the productivity is poor.
When embedded on the surface side of concrete substrate, the glaze surface
There was a possibility that irregularities would occur and the appearance would be reduced. An object of the present invention is to prevent the occurrence of cracks in a concrete substrate.
Prevention, easy manufacture, and excellent strength and appearance
It is to provide a glazed concrete panel.

[0004]

According to the glazed concrete panel of the present invention, the wire is buried by the inside of the concrete base material.
And a metal net is buried on the surface side .

[0005]

[Action] glazed concrete panel of the present invention, Conch
Embed a metal net on the surface side with the inside of the reed base material
Panel strength by using stranded wire and metal mesh together.
The degree improves. Also, for concrete base and stranded wire
Due to the difference in the coefficient of thermal expansion between
The thermal stress that is generated, the expansion and contraction of the stranded wire and the metal mesh
Can be absorbed by gender. The strands are concrete-based
Embedded in the inside of the material, the depth of embedding changes due to meandering
I do not mind. In addition, it is embedded on the surface side of the concrete base material.
The metal mesh to be provided has a substantially flat cross section with low flexibility.
Can be properly buried at a given depth
You. Furthermore, the flexibility is low on the surface side of the concrete base material.
Since a metal net with a substantially flat cross section is buried,
Glazed surface is uniformly flat and has good appearance
Glazed concrete panels can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A glazed concrete panel according to one embodiment of the present invention will be described with reference to FIG . Glazed concrete panel 8 is obtained by embedding the twisted wire 21 and the metal net member 1 to the concrete base material 6 baked glaze 3 on the surface. The metal net 1 is obtained by cutting a metal net such as expanded metal into a square shape, and has a substantially flat cross-sectional shape. As shown in Table 1, the concrete base material 6 was mixed with cement containing the mixed material and shale having different particle diameters as an aggregate at the weight percentage shown in the lower column of the table, and the same volume of water was added thereto. And kneaded to form and cure into a rectangular parallelepiped. Glaze 3
Represents boric acid frit, frog eye clay and C as shown in Table 2.
It is obtained by blending MC (glue material) and water at the volume ratio shown in the lower column of the table.

[0007]

[Table 1]

[0008]

[Table 2] Next , a method of manufacturing the glazed concrete panel 8 will be described. As shown in FIG. 2, between the inner wall of the open longitudinal and transverse dimensions are both box of 300mm mold 4 at the top, inside
The metal net 1 is laid over the wire 21 in a posture parallel to the horizontal plane. In this state, when concrete 2 is uniformly filled in form 2 for 2 to 3 minutes while applying vibration to vibrator (not shown) to form 4, metal net 1 has high rigidity and can be buried at the correct depth. Since the cross-sectional shape of the net body 1 is substantially flat, the upper surface 3a is also a flat surface.
After that, natural training is performed for 24 hours, and then the mold 4 is removed from the mold 4 and left for 7 days to obtain a concrete substrate 6 having a flat upper surface 3a.

Next, as shown in FIG. 3 , a glaze 3 is glazed on the upper surface 3a of the concrete base material 6 in an amount of 1 kg per square meter, and dried at 300 degrees Celsius for 5 hours to form a concrete panel 7. Concrete panel 7
Is heated to 850 degrees Celsius and baked for one hour, then immersed in water for 30 minutes, and further immersed in water at 60 degrees Celsius and a relative humidity of 9
Leave steam curing for 8 days in 8% air.

As a result, as shown in FIG.
The wire 21 is formed on the surface side by the inner side of the base material 6.
It is buried and uses the twisted wire 21 and the metal net 1 together
This improves the panel strength. In addition, concrete base material 6
And the difference in the coefficient of thermal expansion between the stranded wire 21 and the metal net 1
If the stranded wire 21
Can be absorbed by the elasticity of the metal net 1
Occurs when firing or cooling the concrete substrate 6
Cracks that easily occur are prevented, and the strength can be secured. Also more
The wire 21 is buried inside the concrete substrate 6,
Easy to manufacture without worrying about changes in embedding depth due to meandering
I can . In addition, gold embedded on the surface side of the concrete base material 6
The metal net body 1 has a small flexibility and a substantially flat cross-sectional shape.
Therefore, it can be properly buried at a predetermined depth,
Can be manufactured. Moreover, when the concrete base material 6 is thin,
In the same manner, the metal net 1 is appropriately buried at a predetermined depth.
Can be. In addition, it is possible to
A metal net 1 having a low flexibility and a substantially flat cross section is buried.
, The surface glazed with glaze 3 is even and flat.
To get a nice looking glazed concrete panel 8
it can.

[0011] As shown in FIG.
Metal nets 1 and 1 are buried on both sides of the top panel 8
Or concrete as shown in FIG.
The hollow portion 31 may be secured in the base material 6 to reduce the weight.

[0012]

The glazed concrete panel of the present invention comprises:
Metal net on the surface side by the inner side of concrete base material
Is buried.
The flannel strength is improved. Also, concrete base and more
Due to the difference in the coefficient of thermal expansion between the wire and the metal mesh.
The thermal stress generated between the stranded wire and the metal mesh
The concrete base material can be absorbed by
Prevents cracks that tend to occur when firing or cooling
Degree can be secured. In addition, the stranded wire is
Buried on the side of
And it can be easily manufactured. In addition, concrete base
The metal net buried on the front side has low flexibility and is almost flat
Since it has a cross-sectional shape, it must be properly embedded at a predetermined depth.
And can be easily manufactured. In addition, concrete base
The material has a substantially flat cross section with low flexibility on the surface side
Since the metal mesh is buried, the glaze surface is even
Obtain glazed concrete panels that are flat and have a good appearance
Can be

[Brief description of the drawings]

FIG. 1 is a glazed concrete panel according to one embodiment of the present invention .
It is sectional drawing which shows the outline of.

FIG. 2 is a glazed concrete panel according to one embodiment of the present invention .
Of concrete poured into formwork in the manufacturing method of
It is sectional drawing which shows a state.

FIG. 3 is a glazed concrete panel according to one embodiment of the present invention;
It is a perspective view of.

FIG. 4 schematically shows another example of a glazed concrete panel.
FIG.

FIG. 5 schematically shows another example of a glazed concrete panel.
FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Metal net 3 Glaze 6 Concrete base material 8 Glazed concrete panel 21 Strand

Continuation of the front page (56) References JP-A-3-241144 (JP, A) JP-A-60-65779 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04C 2 / 06 C04B 41/50

Claims (1)

(57) [Claims] 1. A glazed concrete panel in which a glaze is baked on a surface of a concrete substrate, wherein a wire is buried inside the concrete substrate and a metal net is buried on the surface side. .