KR100903936B1 - The method of making blocks with natural ston surface layers using for natural aggregate - Google Patents

Abstract

A natural stone surface sidewalk block manufacturing method is provided to improve durability and visual beauty by preventing the surface layer of a sidewalk block from bleaching due to external environment for long time. A natural stone surface sidewalk block manufacturing method comprises: a step(100) for forming a lower base layer of a sidewalk block by mixing white cement, high steel material, and water; a step(200) for forming an upper surface layer by mixing natural aggregate, water, white silica sand, and powder aggregate; a step(300) for curing the sidewalk block formed by laminating the materials and molding the sidewalk block; a step(400) for polishing the upper surface by spraying sand and air and exposing natural aggregate to outside; and a step(500) for hardening the surface by spraying water-soluble epoxy coating material on the surface of the natural aggregate exposed to outside.

Description

The method of making blocks with natural ston surface layers using for natural aggregate}

The present invention relates to a method for manufacturing a natural stone surface layer sidewalk block using natural aggregate, and more specifically, to form a lower base layer by mixing white cement, high steel, and water, the natural remaining after processing in a stone factory on the upper base layer Collecting and pulverizing aggregate to extract natural aggregate having color, and then mixing water, white silica and fine aggregate to form a top surface layer to produce a sidewalk block by applying a pigment to form a surface color with a conventional sidewalk block Differently, natural aggregates are formed so that the color and appearance of natural aggregates are exposed on the surface, so that they can secure durability and appearance for a long time without being discolored or discolored in the external environment or over time, thereby improving the product value of the sidewalk block. It relates to a natural stone surface layer press block manufacturing method using.

In general, the sidewalk block is one of the urban infrastructure that is constructed on the pedestrian road for the convenience of the user walking on the pedestrian road.

For example, the sidewalk block is used for construction on the indoor floor as well as various sidewalks. Recently, various sidewalk block manufacturing methods have been provided to improve the appearance of the sidewalk block and increase the decorative effect and cleanliness. There are also a variety of sidewalk blocks for use in specific locations such as intersections.

Such sidewalk blocks are usually made of sand aggregate as a main material and are processed into a raw material without special surface treatment by undergoing curing through mortar hardening.

In addition, it is divided into a curing block and a natural block using a natural curing process such as cement mortar as shown above, but the curing block through a general curing process such as cement mortar is poor in appearance and easily damaged by the external environment. There is a problem that the life is shortened, the natural block using natural stone can secure the beauty of the appearance, but there was a problem that the productivity is low due to the high manufacturing cost.

Recently, a method of manufacturing a sidewalk block using the above-described cement mortar method, but a method of manufacturing a sidewalk block in which color is formed by applying a pigment for producing a variety of colors on the surface or adding it in the manufacture of the sidewalk block, has been proposed. In addition, the sidewalk block formed through such a manufacturing method also causes the pigment to be peeled off from the surface of the sidewalk block or the cement whitening due to the external environment or the elapsed use period, thereby causing discoloration or discoloration, thereby damaging the appearance of the sidewalk block and causing the entire walk. There was a problem that could hurt the aesthetics of the road, and due to the above-mentioned discoloration or discoloration, the life of the sidewalk block is also lowered, and after a period of use, the sidewalk block had to be replaced and presented.

In addition, the conventional method of manufacturing the sidewalk block using natural stone, by mixing cement, water, etc. in the natural stone to form a sidewalk block made of ordinary concrete without voids, and then polish the upper portion of the natural stone by processing so that the natural stone protrudes There was a problem that the external projection rate fell, and the processing time also took a long time.

An object of the present invention is to solve the problems of the prior art described above, after mixing and processing white cement, high steel and water to form a lower base layer natural aggregate, water having a color on top of the lower base layer By forming a sidewalk block to stack the processed top surface layer by mixing white silica and fine aggregate, the surface layer of the sidewalk block can be secured for long-term durability and beauty without any discoloration or discoloration even in the external environment or over time. Provided is a method for producing a natural stone surface layer sidewalk block using aggregate.

In addition, the present invention can allow the natural aggregate of the upper surface layer to be exposed to the outside through a simple polishing process without complicated processing process, and after collecting the remaining aggregate in the stone factory and the like after the processing process to collect the side block having a natural stone surface layer By forming, it is possible to reduce manpower and manufacturing costs, as well as to provide a method for manufacturing a natural stone surface layer sidewalk block using natural aggregate that can be widely applied to various construction industries.

Hereinafter, a method for manufacturing a natural stone surface layer sidewalk block using natural aggregate according to the present invention will be described in detail.

In order to achieve the above object, the present invention, the first raw material processing step of forming a lower base layer of the sidewalk block by mixing the white cement high steel and water to form a first raw material and then put in a mold to vacuum pressure; A second raw material processing step of forming a top surface layer by putting a second raw material having a natural aggregate having a color, water, white silica and finely divided aggregate into the upper portion of the lower base layer formed by the first raw material processing step, and then vacuum-pressured to form an upper surface layer. ; Block forming step of forming a shape to be manufactured by performing a curing process on the sidewalk block formed by stacking the first raw material and the second raw material through the second raw material processing step, and the surface of the upper surface layer through the block molding step And polishing the sand and air by spraying the mixture to expose the natural aggregates to the outside so that the color and texture of the natural aggregates are visible to the naked eye.

At this time, the mixing ratio of the water, white cement, high steel in the first raw material processing step is 50 to 60% by weight of water, 30 to 40% by weight of white cement, 5 to 10% by weight of steel based on 100% by weight of the total It can be made by mixing.

In addition, the mixing ratio of the water, natural aggregate, white silica, fine aggregate in the second raw material processing step is 30 to 40% by weight of water, natural aggregates 30 to 40% by weight, white silica 15-25 to 100% by weight of the total It can be made by mixing to achieve 15% by weight to 15% by weight, fine aggregate.

In addition, the ratio of the upper surface layer prepared in the second raw material processing step is stacked on top of the lower base layer manufactured in the first raw material processing step may be formed so that 1 part by weight of the second raw material per 2 parts by weight of the first raw material is laminated. have.

In the block molding step, the curing process is preferably cured through steam for 10 to 12 hours at a temperature of 60 to 65 ° C.

In addition, after the upper surface polishing step, it may further comprise a surface reinforcing step of strengthening the surface by spraying a water-soluble epoxy coating on the surface of the natural aggregate exposed to the outside.

In addition, the natural aggregate is used to be pulverized to achieve a size of 1 ~ 5cm, the white silica and fine aggregate can be made by using a pulverized to achieve a size of 1 ~ 3mm.

The present invention as described above can obtain the following effects.

First, the color of natural aggregate is exposed to the surface, so that the color of natural aggregate becomes clearer as it is used for a long time regardless of discoloration or discoloration in the external environment or weather, while maintaining the natural aesthetics of natural aggregate. The city aesthetic can be continuously improved without maintenance.

Second, the cement that forms the sidewalk block by forming color on the sidewalk block through natural aggregates with colors such as red, black, white, yellow, etc., without the need of color pigments used to express the color on the sidewalk block. It is possible to reduce the whitening of the sidewalks to extend the service life of the sidewalk block, thereby reducing the maintenance and maintenance costs of the sidewalk block.

Third, by processing natural aggregates in the same place as the stone factories, the remaining natural aggregates are collected and used for the production of sidewalk blocks. In addition, manufacturing costs can be reduced, thereby reducing the overall production cost of the sidewalk block.

Fourth, it can be used for a variety of buildings in the long term as it can provide a sidewalk block using natural aggregates that is inexpensive and excellent in durability and appearance, as well as can be widely applied to the front of the building industry.

Specific features and other advantages of the present invention will become more apparent from the following drawings and description of the preferred embodiments.

Prior to describing the present invention, the present inventors, when paving the pedestrian road used by the conventional pedestrian block, the pigment of the surface layer constituting the color of the sidewalk block discolored or discolored to damage the appearance of the sidewalk block, It also solves the problem of frequent replacement of the sidewalk blocks over time, and proposes a method of manufacturing natural stone surface layer sidewalk blocks using natural aggregates to reduce manufacturing costs and provide an efficient manufacturing process. It is.

As shown in FIG. 1, the first raw material processing step 100 of forming a lower base layer of a sidewalk block by mixing a white cement high steel and water to form a first raw material, and then placing the mold in a forming mold under vacuum pressure ); The second raw material processing step of forming a top surface layer by putting a second raw material mixed with natural aggregate having a color, water, white silica and finely divided aggregate in the upper portion of the lower base layer formed by the first raw material processing step and vacuum pressure 200; Block molding step 300 for forming a shape to be manufactured by performing a curing process on the sidewalk block formed by stacking the first raw material and the second raw material through the second raw material processing step 200, and the block molding step ( The upper surface polishing step (400) to polish the surface of the upper surface roughened by a mixture of water and sand to expose the natural aggregate to the outside to make the color and texture of the natural aggregate visible to the naked eye. It is done by

At this time, after the upper surface polishing step 400, using the natural aggregate, characterized in that it further comprises a surface reinforcing step 500 to strengthen the surface by spraying a water-soluble epoxy coating on the surface of the natural aggregate exposed to the outside Natural stone surface layer sidewalk block manufacturing method.

1) First raw material processing step (100)

The step is to form a lower base layer of the sidewalk block by mixing the white cement steel and water to form a first raw material and then put in a mold to vacuum pressure.

The lower base layer is in close contact with the bottom surface when constructing the sidewalk block, and the upper surface layer to be described later to be formed in such a way that can be combined in a stacked manner in the present invention, the mixing ratio of the water, white cement, high steel 100 total weight It is formed by mixing 50 to 60% by weight of water, 30 to 40% by weight of white cement, and 5 to 10% by weight of steel.

In the first raw material processing step 100 to add a ratio of the white cement to 30 to 40% by weight relative to the total 100% by weight of the mixture is bonded to the natural aggregate in the second raw material processing step 200 to be described later In order to improve the properties, in particular, even if some of the whitening of the cement is to be emulsified in the ground color of the white cement to prevent the appearance of the sidewalk block is damaged.

In other words, conventional cement is usually added to 20 to 25% by weight relative to the total 100% by weight of the mixture, if less than 25% by weight of cement whitening phenomenon can be exposed to the outside, natural aggregate and It is also difficult to ensure the adhesion of the smooth, so that the mixing ratio of the white cement with respect to 100% by weight of the total mixture is added to achieve 30 to 40% by weight.

In addition, the 5 ~ 10% by weight of the high steel is added to the curing process to be made smoothly when the curing process in the block forming step 300 to be described later.

In addition, in the process of forming the lower base layer, the above-described water, white cement, and high-strength materials may be mixed and then put into a molding mold to form a lower base layer firmly by a vacuum pressure method and then dry. Before the lower base layer is dried, a second raw material step 200 to be described below may be immediately performed to allow the upper surface layer to be stacked on the lower base layer, and the drying process may be performed to shorten the manufacturing process time.

In particular, the lower base layer formed through the first raw material processing step 100 is formed to flexibly withstand the force transmitted from the upper portion of the upper surface layer to be described later, and the upper surface layer formed in the second raw material processing step 200 to be described later. It is preferable to comprise so that thickness may be at least 2 times or more.

2) second raw material processing step (200)

In the step, a second raw material is formed by adding a natural aggregate having a color and a second raw material mixed with water, white silica and fine aggregate to the upper portion of the lower base layer formed by the first raw material processing step, and then vacuum pressurizing to form an upper surface layer. Raw material processing step 200;

That is, the vibration of the mixture of natural aggregate, water, white silica, fine aggregate aggregated through the second raw material processing step 200 in the upper portion of the lower base layer formed through the first raw material processing step 100 30 to 40% by weight of water, natural aggregates 30 to 40% by weight, white silica sand 15 to 25% by weight, based on 100% by weight of the mixing ratio of the water, natural aggregate, white silica, and finely divided aggregates to be laminated to form a bond The fine aggregate is mixed to achieve 15 to 25% by weight.

The water is added to allow 30 to 40% by weight of the total mixture of natural aggregate, white silica, finely divided aggregate is mixed evenly to achieve a solid state.

The natural aggregate is any one or more selected according to the color to be formed on the surface of the sidewalk block after extracting the natural aggregate consisting of red, black, white, yellow by grinding the remaining natural aggregate after processing the stone in many stone factories at home and abroad It is to use a mixture of natural aggregate forming the color.

At this time, the natural aggregate is preferably used to grind to achieve a size of 1 ~ 5cm, but also, it can be applied by changing the size according to the formation of the upper surface layer of the sidewalk block to be manufactured.

The white silica is a large amount of silica and aluminum is added to increase the fire resistance.

The fine aggregate is added as a material for forming a skeleton when the upper surface layer is formed, like the natural aggregate, and is mixed with the natural aggregate and white silica to make the upper surface layer more firmly.

At this time, the white silica and the fine aggregate is made using a pulverized to achieve a size of 1 ~ 3mm This is to allow the fine aggregate and white silica to be tightly entered between the pores of the natural aggregate.

In particular, the fine aggregate is preferably used for the recycled aggregate, it is also more preferred to use that according to the quality standards of the second recycled aggregate.

For example, when the white silica and fine aggregate is filtered using a 5mm sieve, the pass rate passes through 90 to 100% by weight, 70 to 80% by weight passes through 3mm, and 10 to 30% by weight passes through 2 mm. It is to be used to grind to have.

At this time, the quality standards of KS two kinds of recycled aggregates are shown in the following [Table 1].

TABLE 1

The mixing ratio of the water, white cement, high steel in the first raw material processing step 100, and the mixing ratio of the water, natural aggregate, white silica, finely divided aggregate in the second raw material processing step 200 The optimal mixing ratio for the natural stone surface layer press block manufacturing using natural aggregate produced in the present invention, which can be applied by changing by the user's selection according to the external environment and working environment.

3) Block forming step (300)

The step is to mold to the shape to be manufactured by performing a curing process on the sidewalk block formed by the first raw material and the second raw material in close contact with the second raw material processing step 200.

For example, the block forming step 300 is a curing process (concrete for a certain period of time in the sidewalk block is combined with the lower base layer and the upper surface layer formed through the first raw material processing step 100 and the second raw material processing step 200) To maintain the wet state) so that the sidewalk block exhibits sufficient strength by the hydration of the cement so that cracking does not occur.

To this end, the sidewalk block that has been laminated and combined with the lower strata and the upper surface layer through the second raw material processing step 200 is 100% humidity until the space filled with water in the concrete is filled with the hydration product of cement. In order to keep close, the curing process is performed through steam for 10 to 12 hours at a temperature of 60 to 65 ℃.

In particular, the curing process is to cure the sidewalk block, the time passed through the above-described second raw material processing step 200 at least 2 hours, the temperature rises through steam so that the temperature rises evenly during curing of the sidewalk block. After the completion of curing, the press block can be taken out when there is no difference with the outside temperature, thereby reducing the damage of the press block and achieving the required strength.

In addition, the curing process is made through steam for 10 to 12 hours at a temperature of 60 ~ 65 ℃ when the temperature of the curing process falls below 60 ℃ may not be made smoothly through the steam curing process 65 ℃ If it is exceeded, the hydration of the cement is promoted, and the hydrate on the surface of the cement particle is dense, so that the progress of hydration inside the cement particle is prevented, but the strength increases for a short time, but the strength elongation decreases with time, so the temperature does not exceed 65 ℃. Most preferably, it is made within.

In addition, the temperature should be 6 hours or more, but since the intensity is about 60% (compared to 28 days of the standard curing standard), it is preferable to perform 6 hours or more, and the curing process does not affect the intensity even after 12 hours or more. The time is also most desirable to be made within 10 to 12 hours.

In the present invention, to increase the production efficiency of the concrete product, the above-mentioned, using the atmospheric steam curing method, this curing method is also applicable to the user can be appropriately changed according to the working environment or manufacturing efficiency.

In addition, after the above-mentioned curing process is completed, after grasping the moisture state of the surface of the sidewalk block and spraying the water-soluble epoxy resin when achieving the air condition, and further performing the air curing for 7 days to further enhance the robustness of the sidewalk block It can also be improved.

As shown in [Table 2], the flexural strength porosity, permeability coefficient, and natural stone protrusion rate were examined.

TABLE 2

As such, the sidewalk block that passed through the block forming step 300 was able to form sufficient compressive strength required when being installed on a road while forming natural appearance by protruding natural stone on the upper surface layer.

In addition, by the above-mentioned curing process in the block forming step, it is possible to prevent the whitening phenomenon of the cement by securing the surface protrusion rate of the natural stone.

That is, the whitening may be generated according to the Fe2 + content of the cement in the present invention 50 to 60% by weight of water, white cement 30 to 40% by weight with respect to the total 100% by weight in the first raw material processing step (100) , Through the ratio of mixing 5 ~ 10% by weight of the high steel to prevent the whitening phenomenon that can occur if the amount of water is larger than the cement, and through the curing process of the above-mentioned block molding step 300 Once again can be prevented.

4) Upper surface polishing step (400)

The step is performed by grinding the surface of the upper surface layer through the block molding step 300 by mixing sand and air to the outside of the natural aggregate protruding to the upper surface layer through the block molding step 300. By further increasing the color and texture of the natural aggregate is to be well seen by the naked eye.

For example, the step is formed by laminating and combining the lower layer and the upper surface layer through the first raw material processing step 100 and the second raw material processing step 200 described above so that the durability is increased through the block molding step 300. When the natural aggregate constituting the upper surface is exposed to the outside will be performed to further improve the appearance of the sidewalk block.

To this end, by using a method of compressing and spraying the surface of the upper surface layer using sand and air to expose the natural aggregate constituting the upper surface layer to the outside.

Accordingly, when using a sprinkling method using water in order to expose the natural stone to the outside in the sidewalk block using the conventional natural stone, a large amount of water is required to protrude the natural stone, and the cement washed by the water flows into the sewage. In addition, it is possible to prevent the problem of water pollution to enter in advance, as well as natural stones formed in the upper surface layer during the watering process can be prevented from being peeled off by the water surface and easily falling off from the upper surface layer.

5) Surface hardening step (500)

The step is to strengthen the surface by spraying a water-soluble epoxy coating on the surface of the natural aggregate exposed to the outside after the upper surface polishing step 400.

This is applicable to the case of constructing a sidewalk block manufactured according to the above-described method in a room which can be applied according to a user's choice and is not affected by the environment.

Unlike the case described above, in the case of installing the sidewalk block exposed to the external environment, only the top surface polishing step 400 constructs the sidewalk block and the natural aggregate naturally wears away to the external environment over time. The surface hardening step 500 may be omitted so that it can be.

In the above, the first raw material processing step 100, the second raw material processing step 200, the block molding step 300, the upper surface polishing step 400 and the surface reinforcing step 500 are described in order to be performed sequentially. Depending on the environment to be manufactured may be made individually as well as at the same time.

As described above, the present invention can improve the appearance beauty by allowing the natural stone to sufficiently protrude on the upper surface layer constituting the sidewalk block, the production cost of the sidewalk block by using recycled aggregates pulverized the remaining natural aggregate processed in the stone factory And there is an advantage to increase the manufacturing efficiency.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as provided by the following claims. It will be obvious to those with ordinary knowledge.

1 is a process flow diagram illustrating a method for producing a natural stone surface layer sidewalk block using natural aggregate according to the present invention.

             <Code Description of Main Parts of Drawing>

100: first raw material processing step 200: second raw material processing step

300: block forming step 400: upper surface polishing step

500: surface hardening step

Claims (7)

A first raw material processing step (100) of forming a lower base layer of the sidewalk block by mixing the white cement high steel and water to form a first raw material and then putting it in a molding mold under vacuum pressure; The second raw material processing step of forming a top surface layer by putting a second raw material mixed with natural aggregate having a color, water, white silica and finely divided aggregate in the upper portion of the lower base layer formed by the first raw material processing step and vacuum pressure 200; Block molding step 300 of forming a shape to be manufactured by performing a curing process on the sidewalk block formed by stacking the first raw material and the second raw material through the second raw material processing step 200; Polishing the surface of the upper surface layer subjected to the block forming step 300 by mixing water and sand, and exposing the natural aggregate to the outside so that the color and texture of the natural aggregate appear to the naked eye. 400); In the first raw material processing step 100 The mixing ratio of the water, white cement, high steel material is a natural aggregate, characterized in that 50 to 60% by weight of water, 30 to 40% by weight of white cement, 5 to 10% by weight of high steels with respect to 100% by weight of the total Method of manufacturing natural stone surface layer sidewalk block. delete The method according to claim 1, In the second raw material processing step 200 The mixing ratio of the water, natural aggregate, white silica, fine aggregate is 30 to 40% by weight water, natural aggregate 30 to 40% by weight, white silica 15 to 25% by weight, fine aggregate 15 to 25% by weight based on 100% by weight Method for producing a natural stone surface layer sidewalk block using natural aggregate, characterized in that to achieve a%. The method according to claim 1, The ratio of the upper surface layer manufactured by the second raw material processing step 200 to the upper portion of the lower base layer manufactured by the first raw material processing step 100 is stacked in an amount of 1 part by weight of the second raw material per 2 parts by weight of the first raw material. Natural stone surface layer press block manufacturing method using natural aggregate, characterized in that it is formed to be. The method according to claim 1, In the block forming step 300 The curing process is natural stone surface layer press block manufacturing method using natural aggregate, characterized in that the curing through steam for 10 to 12 hours at a temperature consisting of 60 ~ 65 ℃. The method according to claim 1, After the upper surface polishing step 400 Method for producing a natural stone surface layer press block using natural aggregates, characterized in that it further comprises a surface strengthening step (500) to strengthen the surface by spraying a water-soluble epoxy coating on the surface of the natural aggregate exposed to the outside. The method according to claim 1, The natural aggregate is pulverized to achieve a size of 1 ~ 5cm, The white silica and fine aggregate is natural stone surface layer press block manufacturing method using a natural aggregate, characterized in that the pulverized to achieve the size of 1 ~ 3mm.

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