KR101225607B1 - Method Of Manufacturing An Aggregate For Racing Track Pavement - Google Patents

Abstract

The present invention in the aggregate production method for road pavement,
(1) a blasting step of drilling and blasting rock to install and explode; (2) a transport step of crushed gemstones of more than 500mm in size crushed by the crushing equipment and transported to the factory by loading the 300-500mm gemstones in the transport equipment; (3) a first grinding step of crushing the transported gemstones into a pulverization machine to aggregate less than 23mm; (4) a first washing and sorting step of washing the pulverized aggregate using a washing apparatus and simultaneously classifying the crushed aggregate into aggregates of less than 8 mm in size and aggregates of 8 mm or more in size; (5) the aggregate forming step of crushing the aggregate of the size 8mm or more using a molding equipment and trimming the corners to an aggregate of size 8 ~ 23mm; (6) a second washing and sorting step of washing the crushed and trimmed aggregates using a washing device and simultaneously classifying the aggregates into sizes of 10 to 13 mm, 8 to 10 mm, and less than 8 mm, respectively; And, (7) aggregates less than 8 mm in size classified in (4) the first washing and sorting step and (6) the second washing and sorting step are less than 8 to 5 mm, 5 to 2.5 mm and 2.5 mm in size. It provides a racing track packaging aggregate production method characterized in that it comprises a ;;
In addition, (8) the fine aggregate dewatering step of dewatering the aggregate less than 2.5mm classified in the third sorting step (7) provides a racing track packaging aggregate production method further comprises.

Description

Method of manufacturing an aggregate for racing track packaging {Method Of Manufacturing An Aggregate For Racing Track Pavement}

The present invention relates to the production technology of aggregates having a special granularity and granularity used for racing track pavement asphalt concrete. The present invention relates to a production method for racing track paving aggregates up to the desired granularity and granularity.

Unlike ordinary roads, racing tracks require high flatness and grip. However, there is currently no specific aggregate standard for the racing track in Korea.

Aggregate used to manufacture the asphalt concrete used for the racing track should be classified separately from the range of particle size and granularity different from the general roads currently used, and should be used by appropriately mixing the aggregates of the various particle sizes classified.

However, the current road construction commonly used in Korea or the general road standards of the Ministry of Land, Transport and Maritime Affairs is divided into the surface layer and the middle layer in response to the high-speed traffic load. There is only.

Aggregate produced by the aggregate production method commonly used in Korea is not used to obtain high flatness and grip force (friction, high friction resistance) of racing tracks that run at high speed. In the case of asphalt concrete aggregate, racing to produce racing track paving aggregate that meets world-class level by securing technology for producing special aggregate that meets the driver's safety and FIA safety standard to secure driving stability. It is urgent that the invention for the production method for aggregate packaging for tracks is urgent.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the related art. The purpose is as follows.

First, to provide a racing track paving aggregate production method having a special granularity and shape used in the asphalt concrete for paving racing tracks.

Second, to provide a production method for the racing track paving aggregate used in the racing concrete paving asphalt concrete through various production processes.

Third, the present invention seeks to provide an economical and constructive racing track paving aggregate production method that enables the racing track to have high flatness and grip force.

In order to solve the above technical problem, the present invention is a road pavement aggregate production method,

(1) a blasting step of drilling and blasting rock to install and explode; (2) a transport step of crushed gemstones of more than 500mm in size crushed by the crushing equipment and transported to the factory by loading the 300-500mm gemstones in the transport equipment; (3) a first grinding step of crushing the transported gemstones into a pulverization machine to aggregate less than 23mm; (4) a first washing and sorting step of washing the pulverized aggregate using a washing apparatus and simultaneously classifying the crushed aggregate into aggregates of less than 8 mm in size and aggregates of 8 mm or more in size; (5) the aggregate forming step of crushing the aggregate of the size 8mm or more using a molding equipment and trimming the corners to an aggregate of size 8 ~ 23mm; (6) a second washing and sorting step of washing the crushed and trimmed aggregates using a washing device and simultaneously classifying the aggregates into sizes of 10 to 13 mm, 8 to 10 mm, and less than 8 mm, respectively; And, (7) aggregates less than 8 mm in size classified in (4) the first washing and sorting step and (6) the second washing and sorting step are less than 8 to 5 mm, 5 to 2.5 mm and 2.5 mm in size. It provides a racing track packaging aggregate production method characterized in that it comprises a ;;

In addition, (8) the fine aggregate dewatering step of dewatering the aggregate less than 2.5mm classified in the third sorting step (7) provides a racing track packaging aggregate production method further comprises.

According to the present invention, the following effects are expected.

First, the present invention provides a racing track paving aggregate production method having a special granularity and granularity used for asphalt concrete for paving racing tracks.

Second, it provides the production method of racing track paving aggregate used in the racing concrete paving asphalt concrete through various production processes.

Third, the present invention provides a method for producing aggregates for racing track packaging, which is economical and high in construction, which enables the racing track to have high flatness and grip force.

1 is a photograph taken before and after the blasting step (1) in the blasting step of the production track for racing track packaging aggregate of the present invention.
Figure 2 is a photograph of the (2) conveying step of the aggregate production track for racing track packaging of the present invention.
Figure 3 is a photograph of the process of the racing track packaging aggregate production method (3) the first grinding step of the present invention.
Figure 4 is a photograph of the racing track packaging aggregate production method of the present invention (4) the first washing and screening step.
Figure 5 is a photograph of the racing track packaging aggregate production method (5) aggregate molding step of the present invention.
Figure 6 is a photograph of the second track and washing step (6) of the racing track packaging aggregate production method of the present invention.
Figure 7 is a photograph of the (3) the third sorting step of the racing track packaging aggregate production method of the present invention.
8 is a photograph of the (8) fine aggregate dehydration step of the racing track packaging aggregate production method of the present invention.
9 is a state in which aggregates of various particle sizes produced according to the present invention are classified and stacked according to the particle size.
FIG. 10 is a photograph enlarged in FIG. 9 to confirm that aggregates are classified into the same granularity.
FIG. 11 is a photograph enlarged in FIG. 10 to confirm that the same particle size and shape are classified.
12 is a flow chart of the racing track paving aggregate production method of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

12 is a flow chart of the racing track paving aggregate production method of the present invention.

Racing track paving aggregate production method of the present invention, in the aggregate production method for road pavement,

(1) a blasting step of drilling and blasting rock to install and explode; (2) a transport step of crushed gemstones of more than 500mm in size crushed by the crushing equipment and transported to the factory by loading the 300-500mm gemstones in the transport equipment; (3) a first grinding step of crushing the transported gemstones into a pulverization machine to aggregate less than 23mm; (4) a first washing and sorting step of washing the pulverized aggregate using a washing apparatus and simultaneously classifying the crushed aggregate into aggregates of less than 8 mm in size and aggregates of 8 mm or more in size; (5) the aggregate forming step of crushing the aggregate of the size 8mm or more using a molding equipment and trimming the corners to an aggregate of size 8 ~ 23mm; (6) a second washing and sorting step of washing the crushed and trimmed aggregates using a washing device and simultaneously classifying the aggregates into sizes of 10 to 13 mm, 8 to 10 mm, and less than 8 mm, respectively; And, (7) aggregates less than 8 mm in size classified in (4) the first washing and sorting step and (6) the second washing and sorting step are less than 8 to 5 mm, 5 to 2.5 mm and 2.5 mm in size. Characterized by including a; the third sorting step, each classified as aggregate. In addition, (8) the fine aggregate dewatering step of dewatering the aggregate less than 2.5mm classified in the third sorting step (7); characterized in that it further comprises.

1 is a photograph taken before and after the blasting step (1) in the blasting step of the production track for racing track packaging aggregate of the present invention.

The (1) blasting step refers to the step of installing the explosives by blasting the rock as shown in Figure 1, the blasting depth for installing the explosives within 9m and the explosives to be used is preferably using an emulsion-based gunpowder Do. The explosives commonly used for blasting rocks are fast in speed, and the physical and chemical properties of the rocks can be easily changed due to impact and heat, but emulsion-based gunpowder is easy to control the speed and generates less heat.

Figure 2 is a photograph of the (2) conveying step of the aggregate production track for racing track packaging of the present invention.

The conveying step (2) refers to the step of crushing the gemstones larger than 500mm among the blasted gemstones by crushing equipment and transporting the 300-500mm gemstones to the transporting equipment to the factory, in which the mudstones such as weathered rock ( I) Be careful not to mix them.

Figure 3 is a photograph of the process of the racing track packaging aggregate production method (3) the first grinding step of the present invention.

Specifically, Figure 3 (a) is a photograph of the input of 300 ~ 500mm raw stone in the crushing machine, Figure 3 (b) is a photograph to crush the 130mm or less with a jaw crusher (jaw crusher), Figure 3 (c) and (d ) Is a cone crusher (cone crusher) is a photograph that is subsequently crushed to 40mm or less and 23mm or less.

(3) The first crushing step refers to a step of crushing the transported raw stone into a crushing machine to aggregate less than 23mm, crushing the raw material to 130mm or less with a jaw crusher first and secondarily Grinding to 40 mm or less with a cone crusher and crushing to 23 mm or less with a cone crusher are sequentially performed.

Figure 4 is a photograph of the racing track packaging aggregate production method of the present invention (4) the first washing and screening step.

(4) The first washing and sorting step refers to the step of washing the pulverized aggregate using a washing apparatus and simultaneously classifying it into aggregates of less than 8 mm in size and aggregates of more than 8 mm in size, wherein the washing apparatus is placed on a conveyor belt. The installation of a washing screen (washing screen) means that the impurities are washed by high pressure water spray. Specifically, the conveyor belt is configured in the form of a washing screen having a grid of about 9 mm so that aggregates larger than 8 mm remain on top and aggregates less than 8 mm fall out.

Figure 5 is a photograph of the racing track packaging aggregate production method (5) aggregate molding step of the present invention.

The (5) aggregate molding step refers to a step of crushing the aggregate of 8 mm or more in size using a molding machine and trimming the corners to an aggregate having a size of 8 to 23 mm, specifically, using an impact crusher The aggregate is made to be 23 mm thick and molded to have a cube close to the cube.

Figure 6 is a photograph of the second track and washing step (6) of the racing track packaging aggregate production method of the present invention.

(6) The second washing and sorting step is used to clean the crushed and cornered aggregates using the impact crusher and at the same time classified into aggregates less than 10 ~ 13mm, 8 ~ 10mm and less than 8mm At this time, the lattice spacing of the three washing screens (washing screen) to be installed on the conveyor belt in order of 14, 11 and 9mm to classify the aggregate at the same time the high pressure water spray.

Specifically, as shown in FIG. 6 (b), the three conveyor belts are configured in the form of three consecutive washing screens having grids of about 14 mm, 11 mm, and 9 mm, respectively, and the 14 mm grid ( Washing screen of grid) passes the aggregate of 13mm or less through high pressure water spray and only 14mm or more aggregate remains.The washing screen of the 11mm grid shows water spray of 10mm or less among the 13mm or less aggregate. After passing through the only 10 ~ 13mm aggregate remains, the washing screen of the 9mm grid (grid) of less than 8mm of the aggregate of less than 10mm passes through the high-pressure water spray and only the aggregate of 8 ~ 10mm remains. In this process, washing and sorting of aggregates are performed together due to high pressure water spraying.

Figure 7 is a photograph of the (3) the third sorting step of the racing track packaging aggregate production method of the present invention.

(7) the third sorting step is the aggregate of less than 8mm in size classified in the (4) the first washing and sorting step and (6) the second washing and sorting step 8 ~ 5mm, 5 ~ 2.5mm And it refers to the step of classifying each of less than 2.5mm aggregate, the technical configuration is omitted because it is similar to the (6) secondary washing and screening step described above. However, it should be noted that (7) the third sorting step is to classify the fine aggregate of less than 8mm, so it is difficult to classify by the usual gravity or impact method, as shown in Figure 7 (b) It is preferable to use a high pressure water spray using a spray nozzle.

8 is a photograph of the (8) fine aggregate dehydration step of the racing track packaging aggregate production method of the present invention.

The (8) fine aggregate dewatering step refers to the step of dehydrating the aggregate less than 2.5mm classified in the (7) third screening step. Aggregate less than 2.5mm aggregated in the third screening step (7) during the process of (1) to (7) of the present invention contains a lot of moisture, generally 2.5mm or more aggregate is naturally dried Aggregate of less than 2.5mm is insufficient for natural drying, and it is preferable to dry it forcibly by filtering method using a flexible material such as FRP (glass fiber reinforced plastic) filter.

9 is a state in which aggregates of various particle sizes produced according to the present invention are classified and stacked according to the particle size, and FIG. 10 is a photograph showing an enlarged picture of FIG. It is a photograph confirming that it is classified into the same particle size and shape as an enlarged photograph of FIG.

As shown in FIG. 11, the aggregates classified by the racing track paving aggregate production method of the present invention can be classified into uniform particle sizes and granular shapes.

[Table 1] is a test result for the quality standards of the surface layer (wearing course) for the coarse aggregate and the aggregate of the present invention (denoted by speedway).

As can be seen from the above table, the present invention, the sliding resistance is maintained for a long time to ensure the driving safety and has excellent characteristics in terms of wear resistance performance.

[Table 2] is a test result for the quality standards of the binder course (binder course) for the coarse aggregate and the aggregate of the present invention (denoted by the speedway).

As can be seen from the above table, the present invention has an excellent feature in leveling construction for making aggregates having a maximum dimension of 5 mm in the middle of the asphalt pavement layer and integrating the package and making a road surface having high flatness in the surface layer.

Table 3 shows the quality criteria for aggregate size classification.

As can be seen from the table above, the present invention has excellent durability on the basis of five single particle sizes to make an optimal aggregate composite particle size.

[Table 4] is the criteria of aggregate granularity and granularity aimed at by the inventor of the present invention, and [Table 5] is the actual result of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

Claims (10)

In the road paving aggregate production method,
(1) a blasting step of drilling and blasting the rock within a depth of 9m to install and blast the emulsion-based explosives;
(2) a transport step of crushed gemstones of more than 500mm in size crushed by the crushing equipment and transported to the factory by loading the 300-500mm gemstones in the transport equipment;
(3) a first grinding step of crushing the transported gemstones into a pulverization machine to aggregate less than 23mm;
(4) a first washing and sorting step of washing the pulverized aggregate using a washing apparatus and simultaneously classifying the crushed aggregate into aggregates of less than 8 mm in size and aggregates of 8 mm or more in size;
(5) the aggregate forming step of crushing the aggregate of 8mm or more in size using an impact crusher (impact crusher) and trimming the corners to form aggregates of 8-23mm in size;
(6) a second washing and sorting step of washing the crushed and trimmed aggregates using a washing device and simultaneously classifying the aggregates into sizes of 10 to 13 mm, 8 to 10 mm, and less than 8 mm, respectively;
(7) aggregates of less than 8 mm in size classified in (4) first washing and sorting step and (6) second washing and sorting step into aggregates of 8 to 5 mm, 5 to 2.5 mm and less than 2.5 mm A third sorting step of classifying each; And
(8) the fine aggregate dewatering step of dehydrating the aggregate less than 2.5mm classified in the third sorting step (7);
(3) In the first crushing step, the raw material is first crushed to 130 mm or less with a jaw crusher, and secondly to 40 mm or less with a cone crusher, and the third is a cone crusher. Pulverizing to 23mm or less,
(4) In the first washing and sorting step, the washing device is characterized in that the impurities are washed by high pressure water spray by installing a washing screen on the conveyor belt,
(6) The second washing and sorting step is to install the grid spacing of the three washing screens (washing screen) installed on the conveyor belt in the order of 14, 11 and 9mm to classify aggregate at the same time as water spray of high pressure Racing track packaging aggregate production method.

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