KR100861328B1 - Pattern block manufacturing method and pattern block prepared thereby - Google Patents

Abstract

A pattern block and a manufacturing method the same are provided to improve tensile strength and fatigue lifespan of a pattern block and allow the pattern block to have low PH and high surface roughness. A method for manufacturing a pattern block comprises the steps of disposing a pattern panel(120) having various through hole patterns on the upper surface of a block panel(110) having a plurality of cured blocks(111) connected with each other, and disposing a mold(130), which has a hole for spraying an iron bead(140), above the block panel and the pattern panel. The iron bead is sprayed using compressed air through the hole, so that the block panel is subject to surface treatment by allowing the iron bead to collide with the surface of the block panel. The pattern panel has tensile strength of 500kg/cm2 to 600kg/cm2, fatigue lifespan of 4000Nf to 4500Nf, and surface roughness of 6.3um to 8.5.

Description

Pattern Block Manufacturing Method and Pattern Block Produced thereby {Pattern Block Manufacturing Method and Pattern Block Prepared Thereby}

The present invention relates to a block for surface treatment, and more particularly, to a method for manufacturing a block having durability and stability by treating the surface of the block by shot peening, and a block produced by the same.

In general, a block is a kind of building material that is used by building, floor, wall, sidewalk, driveway, retaining wall. These blocks are manufactured using a lot of concrete, the general shape of the block is uniform or less sharp, so the landscaping is poor when construction on sidewalks and roads. In addition, as the pH exhibits strong alkalinity, the soil may be contaminated through rainwater or groundwater.

Blocks have some strength and fatigue life. These blocks are worn by vehicles or numerous pedestrians, so they wear or break after a certain period of time. Therefore, a place where a lot of pedestrians or vehicles go by has to replace the block once a year or two years, so not only waste of resources but also a lot of labor and material costs.

In addition, conventional blocks are remarkably vulnerable to preventing slipping of pedestrians and vehicles. Therefore, when the surface of the block is wet due to rain or snow, water film phenomenon occurs depending on the area where the foot surface of the pedestrian is in contact with the concrete block, and the friction coefficient between the bottom of the pedestrian shoe and the surface of the concrete block decreases significantly. There is a problem of slipping easily.

Recently, in order to prevent such slippage, there is a method of increasing the roughness on the surface of the block by spraying the washing water onto the molded block before curing. However, since this method uses washing water, there is a problem that whitening may occur in the block.

Therefore, the block has a variety of patterns on the surface and the sharpness of the pattern to improve the landscaping properties, and the block having a stronger tensile strength and longer fatigue life than the conventional block is required. In addition, by forming a high surface roughness on the surface of the block can prevent the sliding of the vehicle or pedestrian, and a block that can prevent soil contamination is required.

Accordingly, the present invention is to provide a method for producing a patterned block by treating the surface of the block by a short peening method according to the conditions and a patterned block produced thereby.

In addition, the present invention is to provide a method of manufacturing a patterned block having a low hardness, high surface roughness, as well as improve the tensile strength and fatigue life, and the patterned block produced by the landscape.

To this end, the method of manufacturing a patterned block according to the present invention comprises a first step of forming a patterned panel having various patterns of through holes formed on the upper surface of a block or a block panel connected to a plurality of blocks through the dry curing process, block or block panel And a second step of forming a mold having a hole in which a steel ball is injected onto the pattern panel, and penetrating the pattern panel by spraying the metal ball with compressed air through the hole of the mold to improve tensile strength, fatigue life, and surface roughness. A metal ball collides with the surface of the block or the block panel which is revealed according to the pattern of the pattern, thereby treating the surface of the block or the block panel and including the third step.

At this time, tensile strength is 500-600 kg / cm ² , fatigue life is 4000-4500 Nf, surface roughness is 6.3-8.5 um, porosity is 22-25%, pH is 9-10.

In addition, the surface of the block may be coated with a coating agent to protect the surface and to maintain a clear pattern formed by the surface treatment.

The size of the iron ball used here is 2.7-3.5 mm, the pressure of compressed air is 8-9 kgf / cm ² , and the angle of reflection is 70-85 °.

In addition, the dry curing used is to cure by curing for 8 hours with a heat radiation of 55 ℃.

A pattern block can be manufactured by the method of manufacturing a pattern block. This patterned block also has tensile strength 500-600 kg / cm ² , fatigue life 4000-4500 Nf, surface roughness 6.3-8.5 um, porosity 22-25%, pH 9-10. In addition, the surface of the block can be used by coating with a coating agent.

As such, the patterned block manufactured by the manufacturing method of the present invention improves tensile strength and fatigue life as compared to the conventional block by surface treatment. Therefore, breakage and wear of the block can be prevented.

In addition, the patterned block can be used for a long time by improved tensile strength and fatigue life to prevent resource waste, can bring down the cost.

In addition, since the patterned block subjected to the surface treatment has a high surface roughness, it is possible to prevent the pedestrian and the vehicle from slipping.

In addition, the block forms a pattern by surface treatment, and the landscaping property is good as the pattern is excellent in sharpness.

In addition, the block is beneficial to the human body because it does not pollute the soil because of the low pH.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a process chart showing a process of manufacturing a patterned block of the present invention according to the embodiment.

Referring to FIG. 1, the patterned block is a surface of the block 111 or the block panel 110 by spraying a metal ball onto the panel 110 to which the block 111 or the plurality of blocks 111 are connected.

At this time, the used block 111 is hardened through a dry curing process, where dry curing is cured by heat radiation at 55-65 ° C for 7-8 hours, except for wet curing, film curing, steam curing, etc. It means a dry state of, preferably curing for 8 hours by heat radiation at 55 ℃.

The block 111 may be formed of a cube such as a cube, a cube, or the like, and may be formed to have various shapes such as polygons such as triangles, squares, pentagons, hexagons, or circles, ovals, stars, and flowers. .

In addition, the block 111 may be formed of a single layer or a double layer structure consisting of a base layer and a surface layer by selecting from cement, soil, ceramic, synthetic resin, inorganic binder, and the like. Preferably, in the case of a single layer, an inorganic binder (CSA), blast furnace slag, aggregate may be used, and in the case of a double layer, an inorganic binder (CSA), blast furnace slag, aggregate and urethane binder, aggregate, and a base layer and a surface layer may be used. It can manufacture. Low pH values can be expected if the block is made from these materials.

The block 111 can be installed in the floor, sidewalk, driveway, playground, plaza of the building.

The block 111 used in the present invention may be used alone or a plurality of such blocks 111 may be connected to form a panel 110.

The block 111 or the block panel 110 may raise the pattern panel 130 on its upper surface. In this case, the upper surface of the block 111 or the block panel 110 is in contact with a pedestrian or a vehicle. It means a part formed in the opposite direction to the ground.

The pattern panel 130 is formed in a shape, the shape of which is formed by the through-holes so that when the pattern panel 130 is placed on the block 111 or the upper surface of the block panel 110 block 111 according to the shape formed by the through-holes Or block panel 110 is revealed. The pattern panel 130 is made of synthetic resin or steel, but is not limited thereto, and any material may be used as long as the material is not damaged by the iron ball 140 injected by the compressed air 150.

In addition, the pattern panel 130 may support and fix the mold formed on the pattern panel 130 by installing a pillar on the other surface of the surface in contact with the block panel 110. At this time, the pillar may be formed anywhere without damaging the shape formed by the through hole.

The mold 130 formed on the pattern panel 130 is formed to surround the block 111 or the block panel 110, and a hole is formed in an upper surface of the mold 130. At this time, the hole formed in the mold 130 is not limited to the upper surface of the mold 130, and spraying the metal ball effectively or the pattern sharpness, tensile strength, fatigue life, surface of the block 111 or block panel 110 It can be formed anywhere depending on the conditions that can make the roughness excellent.

The mold 130 is installed so that a space is formed between the mold 130 and the block 111 or the block panel 110. The hole of the mold 130 installed as described above may pass through the compressed air 150, and the iron ball 140 is injected into the mold 130 through the compressed air 150. The iron ball sprayed into the mold 130 processes the surface of the block 111 or the block panel 110 exposed according to the shape formed by the through hole of the pattern panel 120. This surface treatment is called a shot peening method, and preferably a multistage shot peening method.

As described above, the block 111 or the block panel 110 according to the shot peening method, in which the iron ball 140 proceeds by treating the surface, has improved surface roughness and high extrusion residual stress. When the extrusion residual stress is formed high, the fatigue life is extended by improving crack generation and crack propagation suppression by fatigue. In addition, the surface treatment by the short peening method to increase the tensile strength of the block 111 or block panel 110, it is possible to reduce the weight of the block 111 or block panel 110. In addition, it is also good for landscaping because the pattern formed by the surface treatment is clearly and clearly displayed.

When processing the surface of the block 111 or the block panel 110 by the short peening method, the block 111 or block panel according to the speed, the spraying angle, the size of the metal ball, the shape of the metal ball, etc. It affects the tensile strength, fatigue life, surface roughness of (110).

At this time, the metal ball 140 has a spherical shape, the air pressure 150 for injecting the metal ball 140 is 8-9 kgf / cm ² . If the air pressure for spraying the iron ball 140 is less than 8 kgf / cm ² The surface roughness of the block 111 or block panel 110 is low, it can not have excellent tensile strength, fatigue life, vivid pattern shape. When the air pressure is greater than 9 kgf / cm ² , the fatigue life may be lowered, and the surface of the block 111 or the block panel 110 may be dropped.

In addition, the angle of spraying the iron ball 140 is 70-85 degrees, when the spray angle is less than 70 ° can not have excellent tensile strength, fatigue life, vivid pattern, when the spray angle is more than 85 ° The surface of the block 111 or the block panel 110 may be dropped.

Used metal ball 140 is 2.7-3.5 mm, if the diameter is less than 2.7 mm, it may take a long time to process the surface of the block 111 or block panel 110, if the diameter is greater than 3.5 mm As the size of the iron ball 140 increases, the area where the surface of one of the metal ball and the block 111 or the block panel 110 meets is widened to form a flat surface rather than forming roughness, and to extend the fatigue life. Not only do they interfere, but they may not improve the tensile strength.

These short peening blocks have a tensile strength of 600-700 kg / cm ² , a fatigue life of 4000-4500 Nf, a surface roughness of 6.3-8.5um, a porosity of 22-25%, a pH of 9-10 and a clear and sharp It has a pattern shape.

The surface roughness is improved, the fatigue life is extended, the tensile strength is high, and the lightweight block 111 or the block panel 110 may be applied to the roadway. At this time, when the block 111 or block panel 110 whose surface is processed by the short peening method is constructed according to the traveling direction of the vehicle, the block 111 or the block panel 110 is formed by the recessed block 111 or block panel 110 due to the surface treatment. You can slow down. A general block is a block 111 that is treated by the short peening method according to the present invention, although the wheel of the vehicle passes through a block of the surface of the block and a strong pressure of the block of the block receives a strong pressure, and thus the block may be worn or damaged. The block panel 110 is not damaged because of its excellent tensile strength and fatigue life.

In addition, the surface-treated block 111 or block panel 110 may be applied to the sidewalk, park, and the like. At this time, the block 111 or block panel 110 does not have to replace the block 111 or the block panel 110 often because of the extended fatigue life and high tensile strength, the block 111 or block panel 110 It is possible to prevent the pedestrian from slipping due to the high surface roughness formed on the surface.

It is not limited to the metal ball 140 as a material that can be sprayed in the shot peening method, any one can be used as long as it is a spherical shape and not easily broken.

2 is a photograph showing a patterned block of the present invention according to an embodiment.

Referring to FIG. 2, a part of the block of FIG. 2 is surface treated by a shot peening method. As shown in FIG. 2, the surface 112 treated by shot peening is treated with a metal ball so that the surface 112 is recessed as compared with a portion not treated by the shot peening method.

When the short peening method is used for a block, a shape may be formed using a pattern panel as described in FIG. 1.

Figure 2 shows only one of the shapes that can be shown when processing by the shot peening method. At this time, the shape of the block can be used in the portion to show the shape desired by the user and the portion to have a strong tensile strength, high extension life, high surface roughness when installing the block.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. These examples and comparative examples are only for illustrating the present invention in more detail, it is to those of ordinary skill in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. Will be self explanatory.

Comparative example  One.

A mixture of 376 parts by weight of general concrete (OPC), 1691 parts by weight of aggregate and 157 parts by weight of water is inserted into a mold and subjected to vibration to form a single layer block. The blocks thus formed were cured with hot steam at 50 ° C. for 7 hours to prepare blocks that were not surface treated.

Comparative example  2.

After inserting 376 parts by weight of general concrete (OPC), 1691 parts by weight of aggregate, and 157 parts by weight of water, the material was inserted into a mold and subjected to vibration to form a block of a single layer, followed by curing for 10 hours using a high temperature steam at 50 ° C. Let's do it. In this way, the patterned panel formed on the upper surface of the block panel is connected to a plurality of cured blocks and the mold formed with holes. Thereafter, a 4 mm iron ball was sprayed into the mold at an air pressure of 12 kgf / cm ² . At this time, the iron ball was spherical, and the angle to inject the steel ball was 90 degrees. Thus, the metal ball sprayed into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block.

Comparative example  3.

376 parts by weight of general concrete (OPC), 1691 parts by weight of aggregate, and 157 parts by weight of water are inserted into a mold and subjected to vibration to form a block of a single layer, followed by curing for 8 hours with heat radiation at 55 ° C. . The patterned panel formed on the upper surface of the block panel arranged by connecting the cured blocks and the mold formed with the holes are sequentially raised. Thereafter, a 4 mm iron ball was sprayed into the mold at an air pressure of 12 kgf / cm ² . At this time, the iron ball was spherical, and the angle to inject the steel ball was 90 degrees. In this way, the iron sulcus injected into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block.

Example  One.

376 parts by weight of general concrete (OPC), 1691 parts by weight of aggregate, and 157 parts by weight of water are inserted into a mold and subjected to vibration to form a block of a single layer, followed by curing for 8 hours with heat radiation at 55 ° C. . The patterned panel formed on the upper surface of the block panel arranged by connecting the cured blocks and the mold formed with the holes are sequentially raised. 3 mm of iron beads were then injected into the mold at an air pressure of 8 kgf / cm ² . At this time, the iron ball was spherical, and the angle to inject the steel ball was 75 °. In this way, the iron sulcus injected into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block.

Example  2.

199 parts by weight of inorganic binder (CSA), 133 parts by weight of blast furnace slag, 1120 parts by weight of aggregate, and 87 parts by weight of water were inserted into the block mold and subjected to vibration to form into a single layer block shape, followed by heat dissipation at 55 ° C. Curing by curing for 8 hours. The patterned panel formed on the upper surface of the block panel arranged by connecting the cured blocks and the mold formed with the holes are sequentially raised. 3 mm of iron beads were then injected into the mold at an air pressure of 8 kgf / cm 2. At this time, the iron ball was spherical, and the angle to inject the steel ball was 75 °. Thus, the metal ball sprayed into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block.

Example  3.

254 parts by weight of inorganic binder (CSA), 180 parts by weight of blast furnace slag, 260 parts by weight of aggregate, 70 parts by weight of water to form a base layer and 63 parts by weight of urethane binder and 720 parts by weight of aggregate to form a surface layer Insert one substance into the block mold. In this case, the material forming the base layer is inserted into the lower layer portion of the block mold, the material forming the surface layer is inserted into the upper layer portion. After inserting materials into the block mold, high-pressure vibration of high temperature was applied to the block mold to form a double layer block shape, and then cured by curing at 55 ° C. for 8 hours. At this time, the temperature of the block mold was 150 degreeC. Thus, the patterned panel having a shape formed on the upper surface of the block panel arranged by connecting the formed blocks and the mold having a hole are raised. 3 mm of iron beads were then injected into the mold at an air pressure of 8 kgf / cm ² . At this time, the iron ball was spherical, and the angle to inject the steel ball was 75 °. In this way, the iron sulcus injected into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block.

Example  4.

254 parts by weight of inorganic binder (CSA), 180 parts by weight of blast furnace slag, 260 parts by weight of aggregate, 70 parts by weight of water to form a base layer and 63 parts by weight of urethane binder and 720 parts by weight of aggregate to form a surface layer Insert one substance into the block mold. In this case, the material forming the base layer is inserted into the lower layer portion of the block mold, the material forming the surface layer is inserted into the upper layer portion. After inserting materials into the block mold, high-pressure vibration of high temperature was applied to the block mold to form a double layer block shape, and then cured by curing at 55 ° C. for 8 hours. At this time, the temperature of the block mold was 150 degreeC, respectively. Thus, the patterned panel having a shape formed on the upper surface of the block panel arranged by connecting the formed blocks and the mold having a hole are raised. 3 mm of iron beads were then injected into the mold at an air pressure of 8 kgf / cm ² . At this time, the iron ball was spherical, and the angle to inject the steel ball was 75 °. Thus, the metal ball sprayed into the mold processed the surface of the block panel exposed to the outside according to the shape of the pattern panel to prepare a pattern block. After treating the surface of the block panel in this way it was coated with a thickness of 10um using a coating agent.

Test Example

Test specimens of the blocks prepared in Comparative Example 1-3 and Example 1-3 were prepared and each test was carried out.

- tensile strength: and applying a load at a rate per minute of 7 ~ 14 kg / cm ² in the block above and below the direction of the place on the pressure plate so as not pyeonsin block recording the maximum load.

-Fatigue Life: Fatigue life is measured with a fatigue torsion tester. The stress with constant amplitude is applied to the material and the number of iterations until the material reaches breakage is obtained.

-Surface roughness: Measure the surface roughness by using roughness measuring instrument.

-Porosity: Measure the porosity by the volume method of 'Porosity Test Method of Porous Concrete'.

Majority percentage (%) = [1- (W2-W1) / V1] X 100

V1: volume of specimen, W1: underwater weight of specimen

W2: Weight after leaving for 24 hours

-pH measurement test: The ratio of porous concrete block (28 days, 20 cities, air curing) and distilled water is about 1:10, soak the block in distilled water and measure the pH using a simple pH meter.

-Pattern sharpness: Observe the block panel visually and mark 1 to 5 according to the sharpness of the pattern.

1 ... The pattern is not clear at all. 2 ... Weakly clear pattern. 3 ... partly clear pattern. 4 ... clear. 5 ... The pattern is clear and full.

Table 1 is a table comparing the test examples of Comparative Example 1-3 and Example 1-4.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 Tensile strength (kgf / cm2) 400 380 440 510 530 540 540 Fatigue Life (Nf) 2000 1900 2400 3200 3300 3500 3500 Average surface roughness (um) 2.4 5.0 6.2 8.1 8.3 8.4 6.4 Porosity (%) 19.7 20.1 20.0 19.1 24.1 24.9 22.7 pH 11.3 11.2 11.3 11.2 9.5 9.6 9.5 Sharpness One 3 5 5 5 5 5

The results showed that the tensile strength, fatigue life, and surface roughness of the block regardless of the structure of the monolayer or the bilayer were improved by the curing type (dry curing) and the surface treatment for the conditions. However, it was confirmed that the elasticity was better when using the double layer. In addition, the pH was lower in the block using CSA and blast furnace slag, and the vividness of the pattern became clear and clear through dry curing and surface treatment.

In addition, it was confirmed that coating the surface of the block can maintain the sharpness for a long time.

1 is a process chart showing a process of manufacturing a patterned block of the present invention according to the embodiment.

2 is a photograph showing a patterned block of the present invention according to an embodiment.

* Description of the symbols for the main parts of the drawings *

100: pattern block 110: block panel

111: block 112: short-pinned block surface

120: pattern panel 130: mold

140: iron ball 150: air pressure

Claims (16)

A first step of disposing a pattern panel having various through hole patterns formed on an upper surface of a block panel to which a plurality of blocks which have been cured are connected; A second step of arranging a mold having a hole through which iron balls are injected onto the block panel and the pattern panel; And a third step of treating the surface of the block panel by colliding the metal ball with the surface of the block panel exposed by the penetrating pattern of the pattern panel by spraying the metal ball with compressed air through the hole of the mold. As a pattern block manufacturing method to The patterned block is 500-600 kg / cm ² Tensile strength, fatigue life of 4000-4500 Nf, pattern block manufacturing method characterized by having a surface roughness of 6.3-8.5 um. A first step of arranging a pattern panel having various through hole patterns formed on an upper surface of the cured block; A second step of arranging a mold having a hole through which iron balls are sprayed onto the block and the pattern panel; And a third step of treating the surface of the block by colliding the metal ball with the surface of the block exposed according to the penetrating pattern of the pattern panel by spraying the metal ball with compressed air through the hole of the mold. As a block manufacturing method, The patterned block is 500-600 kg / cm ² Tensile strength, fatigue life of 4000-4500 Nf, pattern block manufacturing method characterized by having a surface roughness of 6.3-8.5 um. The method according to claim 1 or 2, After the third step, the pattern block manufacturing method characterized in that it further comprises the step of coating the surface of the block with a coating agent. The method according to claim 1 or 2, The block structure is a pattern block manufacturing method, characterized in that formed by selecting from a single layer or a double layer. The method according to claim 1 or 2, The patterned block is a method of manufacturing a patterned block, characterized in that having a porosity of 22-25%, pH of 9-10. The method according to claim 1 or 2, The size of the iron ball is 2.7-3.5 mm, the pressure of the compressed air is 8-9 kgf / cm2, the angle of injection is a pattern block manufacturing method, characterized in that 70-85 °. The method according to claim 1 or 2, The curing method is a pattern block manufacturing method characterized in that the dry curing. The method of claim 7, wherein The dry curing is a pattern block manufacturing method, characterized in that curing for 8 hours by heat radiation at 55 ℃. A first step of disposing a pattern panel having various through hole patterns formed on an upper surface of a block panel to which a plurality of blocks which have been cured are connected; A second step of disposing a mold having a hole through which a steel ball is sprayed onto the block panel and the pattern panel; A third step of treating the surface of the block panel by colliding the metal ball with the surface of the block panel exposed by the pattern of the penetrating pattern of the pattern panel by spraying the metal ball with compressed air through the hole of the mold. As a patterned block manufactured by a manufacturing method to The patterned block is 500-600 kg / cm ² Patterned block characterized by having a tensile strength, fatigue life of 4000-4500 Nf, surface roughness of 6.3-8.5 um. A first step of arranging a pattern panel having various through hole patterns formed on an upper surface of the cured block; A second step of arranging a mold having a hole through which iron balls are sprayed onto the block and the pattern panel; And a third step of treating the surface of the block by colliding the metal ball with the surface of the block exposed according to the penetrating pattern of the pattern panel by spraying the iron ball with compressed air through the hole of the mold. As a patterned block produced by the method, The patterned block is 500-600 kg / cm ² Patterned block characterized by having a tensile strength, fatigue life of 4000-4500 Nf, surface roughness of 6.3-8.5 um. The method according to claim 9 or 10, The pattern block, characterized in that the surface of the pattern block is coated with a coating agent. The method according to claim 9 or 10, The block structure is a patterned block, characterized in that formed by selecting from a single layer or a double layer. The method according to claim 9 or 10, The patterned block is a patterned block, characterized in that having a porosity of 22-25%, pH of 9-10. The method according to claim 9 or 10, The size of the iron ball is 2.7-3.5 mm, the pressure of the compressed air is 8-9 kgf / cm ² , the patterned block, characterized in that the manufacturing angle of the injection is 70-85 °. The method according to claim 9 or 10, The curing block is a pattern block, characterized in that the dry curing. The method of claim 15, The dry curing is a patterned block, characterized in that curing for 8 hours with heat radiation at 55 ℃.

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