JPH11148198A - Lightweight cellular concrete panel and surface processing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage in the side part of a groove section caused by impact in the case of conveyance and execution and to provide a lightweight cellular concrete panel having the surface texture of the natural tone (stone cutting tone, parting plane tone) and a surface processing method thereof. SOLUTION: A lightweight cellular concrete panel 1 machining a channel section 2 in the surface forms separation belts 5 in one side or both sides of the channel section 2 and the end part of the panel along the said channel section 2 and end part of the panel. Then, the separation belts 5 are formed on the whole panel 1 except the bottom part of the channel section 2 and part of undamaged section of the side part. The channel section 2 is machined on the surface, and then, impact is given to the channel section 2 by means of a separation device, the side part of the channel section 2 is lacking, and the separation belts having the exposed cutting surface in the cellular concrete is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight cellular concrete panel having a groove formed on its surface and a method for processing the surface.

[0002]

2. Description of the Related Art A lightweight cellular concrete panel is a lightweight, ready-made panel reinforced by reinforcing steel bars or the like, and is known as a large panel having a width of 60 cm and a length of several meters, for example. This lightweight cellular concrete panel is
It has the characteristics of being economical, lightweight, fire-resistant and heat-insulating, and has excellent workability, and is widely used in the building industry as a private house, a house with shops, a building roof, floor, outer wall, partitioning material, etc. . However, although lightweight cellular concrete panels are materials with excellent properties in this way, they are generally poorly designed when used as outer wall materials because they are generally produced as flat flat panels due to production efficiency. There is a problem.

In order to overcome this problem, a method for forming a groove on the surface of a lightweight cellular concrete panel has been proposed. For example, JP-A-58-16
Japanese Patent Application No. 0106 and Japanese Patent Application No. 59-167203 disclose a surface processing technique using a rotary cutting blade. However, those that have been grooved by these technologies, the resulting design is limited to those that are mechanically uniform, and because the shape composed of the surface and the groove is relatively sharp,
The paint remains difficult to adhere to the side surface of the groove, and when the side surface is damaged due to an impact during transportation or construction, there remains an essential problem such that the damage mark is conspicuous.

Further, as disclosed in Japanese Patent Application Laid-Open No. 63-25284, there is a technique in which a projectile such as a small steel ball collides with the surface of a lightweight cellular concrete panel using an emperor unit to obtain a concave portion, that is, a groove portion. The side portions of the grooves become sharp and steep, so that damage due to impact during transportation and construction is inevitable, and the damaged portions and the surface processed by the small steel balls have different surface textures, and damage marks are conspicuous. There remain essential issues such as ease of use.

[0005] Further, as in JP-A-63-82702 and JP-A-63-82705, even when machining with a small steel ball and machining of a groove with a cutting tool are used in combination, the side surface of the groove is steep. Inevitably, it is susceptible to damage due to impact during transportation and construction, and the texture of the damaged part is different from other surfaces, leaving essential issues such as easy damage marks to be noticeable. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and has been developed by surface treatment.
Lightweight cellular concrete that improves the adhesion of paint on the side of the groove, prevents damage to the side of the groove due to impact during transportation and construction, and has a natural surface texture such as stone-cutting and stone-graining It is an object to provide a panel and a surface processing method.

[0007]

That is, the present invention is as follows. (1) A lightweight cellular concrete panel having a groove formed on a surface thereof, wherein a peeling band is formed on one or both sides of the groove. (2) The lightweight cellular concrete panel according to the above (1), wherein the exfoliation zone is further formed at an end portion of the lightweight cellular concrete panel. (3) The lightweight cellular concrete panel according to the above (1) or (2), wherein a peeling band is formed on the entire surface of the lightweight cellular concrete panel between the grooves. (4) The lightweight cellular concrete panel according to any one of (1) to (3), wherein a peeling band is also formed on the bottom surface of the groove. (5) At least one side portion of the groove portion of the lightweight cellular concrete panel having a groove processed on the surface, or at least one of the bottom portion of the groove portion and the end portion of the lightweight cellular concrete panel in addition to the one side portion. A method for surface-treating a lightweight cellular concrete panel, comprising applying an impact with a peeling tool to form a peeling band in one or more of the above-mentioned portions.

Hereinafter, the present invention will be described in detail. First, examples of the surface appearance of the lightweight cellular concrete panel of the present invention are schematically shown in FIGS. In the present invention, the ordinary lightweight cellular concrete panel refers to a panel manufactured by the following manufacturing method. For example, calcareous raw materials,
A mortar slurry in which water, a foaming agent, etc. are added to a siliceous raw material is poured into a mold in which a large number of reinforcing bars are arranged, and a large mold-shaped block containing air bubbles is formed into a semi-cured piano wire during curing. And then autoclaved.

[0009] The lightweight cellular concrete panel referred to in the present invention includes any shape as long as it contains air bubbles. The panel is used as a floor panel, a roof, a flat panel used as a partitioning material, or at a protruding corner of an outer wall. Examples thereof include L-shaped and R-shaped corner panels to be used, and those manufactured into a predetermined shape by cutting a panel after autoclave curing and a shape of a reinforcing bar. The groove 2 to be first processed into the lightweight cellular concrete panel can be formed by using, for example, a conventionally known cutting tool drill, milling machine, chip saw, reamer, woodworking saw, or the like. The width and depth of the groove 2 are not particularly limited, and can be determined from design and workability. However, a width of 2 to 30 mm and a depth of 2 to 50 mm are generally used.

The cross-sectional shape of the groove 2 is not limited to the shape shown in FIG. 5, but may be, for example, a curved bottom surface or a V-shaped inclined structure. Groove 2
The shape in the longitudinal direction may be a straight line or a curved line, but if it is linear, cutting is easy. It may be a vertical straight line only, a horizontal straight line only, or a tiled or brick pattern composed of vertical and horizontal straight lines. The presence of the groove portion 2 can be recognized by the fact that the mechanically cut bottom portion of the groove portion 2 remains continuously even if the peeling band 5 formed later exists. Further, the shape of the end portion of the panel may be the same as that of the groove portion 2 or may be a relatively flat flat shape which is not cut.

Normally, the bubbles and the edges of the light-weight cellular concrete panel at the surface of the panel are deformed or crushed by the piano wire at the time of cutting. Quality layer. Further, the cut surface is generally composed of a portion where bubbles are exposed, and a heavy portion which is crushed by a cutting tool blade. The peeling band 5 is subjected to a physical impact on the side surface portion 3 or the bottom surface portion 4 of the groove portion 2 by the peeling tool 8 so as to pry the side surface portion 3 or the bottom surface portion 4.
Is obtained by peeling off the particles.

The stripping band 5 does not exist with a continuous and constant width, and the missing width has an irregular wavy shape. It is not always necessary to continuously form the stripping band 5 formed by cutting off the side portion, and the side portion not stripped and stripped and the stripped portion may be mixed irregularly. Further, the peeling band 5 may be formed only along one side of the side surface portion 3 of the groove 2, and the opposite side surface portion 3
May be formed on the side portions of both sides,
Also, a combination formed on one side surface portion and the opposite one side surface portion may be used, and further, one side surface portion and both side surface portions, or formed on the opposite one side surface portion and both side portions. It may be a combination, formed on one side surface part, one side surface part on the opposite side, and two side surface parts.
May be combined, the combination may be every other groove, two or more grooves, or a combination of these.

The peeling band 5 is designed to be dot-like, stripe-like, lattice-like, or a composite of these, and that a stripping band is formed on the entire surface between the grooves. It may be formed in a shape, stripe, lattice, or a combination of these shapes. Since the side surface portion of the groove portion exists continuously, it is more preferable to form a stripping band 5 in which the side surface portion is irregularly partially omitted on the opposite side surface portion 3. Furthermore, a stripping band may be formed on the entire surface of the lightweight cellular concrete panel except for a part of the undeleted portion of the bottom portion 4 and the side portion 3 of the groove portion 2. The shape and surface area of the stripping band 5 are determined by the cross-sectional shape and dimensions (width, depth) of the groove 2,
By changing various conditions such as the arrangement method of the groove 2 (the whole shape and interval of the groove 2), the shape of the peeling tool, and the insertion position, the design can be varied.

The shape of the blade of the peeling tool 8 used in the present invention is not particularly limited, and can be determined from design and workability. There is no particular limitation as long as it can be performed. For example, as shown in FIG. 6, the tip may be inclined, flat, or squid-shaped. It is preferable that the tip has a thickness of 0.5 to 25 mm and a width of 10 to 100 mm. The lightweight cellular concrete panel shown in FIG. 1 is an example in which peeling bands 5 are formed on both sides of a groove 2 which is linear in the horizontal direction, and the lightweight cellular concrete panel shown in FIG. This is an example in which peeling strips 5 are formed on both sides of No. 2. The missing state of the side portion 3 of the groove 2 is shown in the sectional views of FIGS. Reference numeral 6 denotes a missing portion, and this portion is a portion that has been removed from the panel.

The texture of the surface of the exfoliation zone 5 is similar to that of the groove portion 2 except that the cut surface of the foam of the lightweight cellular concrete is directly exposed to the surface, but the texture of the surface is different from the surface of the groove portion. It has become. For example, the surface of the lightweight cellular concrete panel is cut with a piano wire or the like at the stage of semi-hardening at the time of manufacturing, so that the edge of the cell is deformed or crushed, and the side portion of the groove portion 2 formed by a rotary blade or the like. 3 and the bottom part 4 are relatively flat and smooth surfaces. On the other hand, the portion of the stripping band 5 is characterized in that the side surface portion 3 of the groove 2 is missing and the inner surface of the bubble is exposed as it is.

Next, in the surface treatment method for a lightweight cellular concrete panel of the present invention, first, a groove is provided as a pre-treatment on the surface portion of an ordinary lightweight cellular concrete panel, and the side portion or the bottom portion of the groove is subjected to impact with a peeling tool. And peeling off a part of the surface of the lightweight cellular concrete panel to form a peeling zone only in a portion where the cut surface of the cellular remains exposed. The lightweight cellular concrete panel may be a flat panel or a corner panel. The surface processing method will be described with reference to the drawings.

In the pattern shown in FIG. 4, a peeling tool is inserted into the groove of the lightweight cellular concrete panel 1 in which the groove 2 is machined as shown in FIG. 5, and as shown in FIG. By prying, a physical impact is given to the side surface portion of the groove portion 2 with a blade. Then, the portion 6 of the lightweight cellular concrete is dropped along the side surface portion of the groove portion 2 and peeled off, thereby forming the exfoliated band 5 in which the cut surface of the foam is exposed. In this manner, the lightweight cellular concrete panel having a surface processed according to the present invention as shown in FIGS. 1, 7, 10 and 12 is obtained. For example, ordinary lightweight cellular concrete panels are manufactured in a semi-reversible state before being hardened by autoclave curing in the manufacturing process by cutting large blocks into a large number of panels using a piano wire. The bubbles on the lightweight cellular concrete panel surface are crushed by the piano wire and have a relatively flat surface.

According to the surface treatment method of the present invention, a groove portion is formed as a pretreatment on the surface portion of such a normal lightweight cellular concrete panel, and then a physical impact is applied to a side portion of the groove portion to pry a peeling band. It is formed. And the lightweight cellular concrete panel of the present invention is:
A relatively smooth surface portion cut by a piano wire in a semi-reversible state, a linear groove, a peeling band like crushed natural stone, or simply a straight groove and a peeling band like crushed natural stone. It is characterized by having a clear contrast between them, and when used for the outer wall, gives a unique natural-like texture appearance not found in ordinary lightweight cellular concrete panels. In addition, since the side portions of the sharp grooves having a small strength are peeled in advance, the adhesion of the paint on the side portions can be improved, and chipping and cracking due to impact during transportation and construction can be prevented. There is.

The surface processing method of the present invention makes use of the strength of the lightweight cellular concrete panel, which is relatively easy to chip, and the brittleness in terms of strength.
Based on the principle that a physical impact is given only to the side surface of the groove with a peeling tool (for example, pry up with a peeling tool having a rotating mechanism, place a fulcrum on one side, and pry up with the leverage principle). Therefore, it is possible to easily form a peeling band without causing a compression mark of the peeling tool and damage to other parts, and to obtain a stone split tone,
As you can not imagine from natural stone tone designs such as stone texture,
It is excellent in productivity.

[0020]

Now, the present invention will be described in further detail with reference to Examples. The evaluation was performed by the following method. (1) Impact test After stacking eight samples obtained in the examples on a table and fixing them with a wire rope, a gravitational acceleration of 1.5 G was repeatedly applied in the width and length directions of the panel for 3 hours. Thereafter, the presence or absence of defects and cracks was observed. (2) Painting test Eight samples obtained in the examples were set on the construction stand,
After sufficiently adjusting the base of the panel surface, a commercially available paint for a lightweight cellular concrete panel was sprayed on the panel surface in the order of undercoating, main material spraying, and topcoating. At the time when the final curing was completed 24 hours after the top coating, the coated state and the design of the panel surface were visually evaluated.

[0021]

Embodiment 1 As shown in FIGS. 4 and 5, the thickness is 10 cm,
As a pretreatment, a groove 2 was formed in a lateral direction on a surface of a lightweight cellular concrete panel having a width of 60 cm and a length of 300 cm by a normal processing method using a normal rotating blade. Next, as shown in FIG. 6, a peeling tool 8 having a rotating mechanism 7 is inserted into the space of the groove portion 2, and a repetitive left and right rotating motion as shown by an arrow in the drawing is given to the blade of the peeling tool 8. , A force to pry the side surface portion 3 of the groove portion 2 was applied. As a result, a substantially circular exfoliated portion where the cut surface of the bubble was exposed was formed. 6 is the missing part. When the above processing was continuously performed along the side surface portions 3 of all the groove portions 2, a peeling band 5 having uneven folds as if crushed natural stone was obtained.

[0022]

Embodiment 2 An embodiment in which the type of the groove is changed will be described below. FIG. 1 is a plan view schematically showing a panel surface obtained by processing side surfaces 3 on both sides of a groove 2 in the same manner as in the first embodiment. FIGS. 2 and 3 are sectional views and plan views in which a part is enlarged.
Shown in A lightweight cellular concrete panel with a continuous stone-tone design was obtained.

[0023]

Embodiment 3 FIG. 7 shows that the grooves are formed lengthwise and widthwise, and then the side portions 3 on both sides of the grooves 2 of the lightweight cellular concrete panel.
2 is a panel surface schematically shown processed in the same manner as in Example 1. FIG. 8 is a partially enlarged plan view and cross-sectional view.
As shown in FIG. A lightweight cellular concrete panel with a stone-like design was obtained.

[0024]

Fourth Embodiment FIGS. 10 and 11 schematically show a panel surface and a sectional view in which a side surface portion 3 on one side of a groove 2 is processed in the same manner as in the first embodiment. A light-weight cellular concrete panel having a linear stone-cut design, which is constituted by a side surface portion having a peeling band 5 and an unprocessed side surface portion, was obtained.

[0025]

Fifth Embodiment FIG. 12 shows an example of a lightweight cellular concrete panel in which a large number of grooves are formed vertically and horizontally, in which the groove 2 and both side portions 3 are machined in the same manner as in the first embodiment. . As shown in the cross-sectional view and the plan view in FIGS. 13 and 14, the entire surface of the lightweight cellular concrete except for a part of the undeleted portion of the bottom portion 4 and the side portion 3 of the groove portion 2 is formed by the exfoliation zone 5. Thus, a lightweight cellular concrete panel having the following design was obtained.

[0026]

[Reference example] Thickness 10 cm, width 6 obtained in Examples 1 to 5
Eight pieces of lightweight aerated concrete panels each having a length of 0 cm and a length of 300 cm were prepared and stacked, and subjected to an impact test. As a result, no chipping or cracking occurred on the side surface of the groove, and the shape immediately after processing was maintained. Was. Next, Example 1
A coating test and a construction test were performed on all of the lightweight cellular concrete panels obtained in Steps 5 to 5. As a result, at the time of painting, there is no occurrence of insufficient adhesion of paint or uneven paint on the side surface of the groove, and when used as an outer wall,
The rugged shape of the stripping zone provided a clear contrast and natural-like texture not found in ordinary lightweight cellular concrete panel buildings.

[0027]

According to the lightweight cellular concrete panel of the present invention, since the peeling band is formed along the side surface of the groove, damage due to an impact during transportation or the like is small. There is an excellent advantage that it is difficult to distinguish the difference between the peeled strip processed into a damaged portion and the damaged portion, and the difference cannot be identified as damage. In addition, the lightweight cellular concrete panel of the present invention does not show a decrease in paint adhesion on the side surface of the groove,
It overcomes the essential problems of the conventional lightweight cellular concrete decorative panel, such as damage due to impact during transportation or the like and a decrease in paint adhesion on the side surface of the groove. Further, when used as an outer wall, the irregular angle of the peeling band makes the incident angle of the ultraviolet light irregular, so that a new effect that the deterioration of the paint can be reduced also occurs.

Further, the peeling band provides a natural stone-like surface texture appearance such as stone-tone and stone-tone, and expresses a design property that cannot be achieved only with ordinary lightweight cellular concrete panels. It can sufficiently respond to the needs of the recent construction market, such as individualization and high added value. And since the surface processing method of the present invention peels off the lightweight cellular concrete body surface, it does not change the original production method and various properties of the lightweight cellular concrete panel, has good productivity, is low in cost, and has excellent design. This enables industrial production of lightweight lightweight concrete panels.
In addition, the surface processing method of the present invention is industrially excellent in that various variations can be expressed by the dimensions and shapes of the grooves when applying the grooves as the pretreatment, and the dimensions and shapes of the peeling tools, and a combination of both. It is.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing one example of a lightweight cellular concrete panel having a surface processed according to the present invention.

FIG. 2 is a cross-sectional view of the lightweight cellular concrete panel of FIG. 1 in which a groove is cut at a right angle to a longitudinal direction.

FIG. 3 is a partially enlarged plan view schematically showing a portion between grooves in FIG. 1;

FIG. 4 is a plan view schematically showing a lightweight cellular concrete panel in which a groove is processed before surface processing.

5 is a cross-sectional view of the lightweight cellular concrete panel of FIG. 4 perpendicular to the longitudinal direction of the groove.

FIG. 6 is a sectional view schematically showing a method for processing a lightweight cellular concrete panel of the present invention.

FIG. 7 is a plan view schematically showing one example of the appearance surface of the lightweight cellular concrete panel of the present invention.

FIG. 8 is a plan view schematically showing a partially enlarged surface of FIG. 7;

9 is a cross-sectional view schematically showing a cross section of the lightweight cellular concrete panel of FIG. 7 perpendicular to the longitudinal direction of the groove.

FIG. 10 is a plan view schematically showing one example of the lightweight cellular concrete panel of the present invention.

FIG. 11 is a cross-sectional view schematically showing a cross section perpendicular to the longitudinal direction of the groove of the lightweight cellular concrete panel of FIG. 10;

FIG. 12 is a plan view schematically showing the external appearance surface of an example of the lightweight cellular concrete panel of the present invention.

13 is a cross-sectional view schematically showing a cross section perpendicular to the longitudinal direction of the groove of the panel of FIG.

FIG. 14 is an enlarged plan view schematically showing a part of FIG. 12;

[Description of Signs] 1 Lightweight cellular concrete panel 2 Groove portion 3 Side surface portion of groove portion 4 Bottom portion of groove portion 5 Peeling band 6 Missing part 7 Rotating mechanism 8 Peeling tool 9 Irregular folds of peeling band 10 End part of lightweight cellular concrete panel 11 Untreated surface of lightweight cellular concrete panel

Claims (5)

[Claims] 1. A lightweight cellular concrete panel having a groove formed on a surface thereof, wherein a release zone is formed on one or both sides of the groove. 2. The lightweight cellular concrete panel according to claim 1, wherein the release zone is further formed at an end portion of the lightweight cellular concrete panel. 3. The lightweight cellular concrete panel according to claim 1, wherein a peeling band is formed on the entire surface of the lightweight cellular concrete panel between the grooves. 4. The lightweight cellular concrete panel according to claim 1, wherein a peeling band is also formed on a bottom surface of the groove. 5. A lightweight cellular concrete panel having at least one side portion of a groove having a groove formed on a surface thereof, or at least one of a bottom portion of the groove and an end portion of the lightweight cellular concrete panel in addition to the one side portion. A method for processing the surface of a lightweight cellular concrete panel, comprising applying an impact to one part with a peeling tool and forming a peeling band in one or more of the parts.