KR0174215B1 - Automatic system for making asphalt-concrete aggregate - Google Patents

Abstract

An automation equipment for processing an aggregate for a room temperature asphalt which is capable of automatically processing and packaging the asphalt-concrete (hereinafter abbreviated as ascon) material and performing the application without heating under an atmospheric temperature, As for aggregate for ascon,

The present invention relates to a process for selecting and drying gravel, sand, and crushed stone, which are main ingredients of the ascon, at a predetermined size, a process for dispersing and storing the dried material in the hopper and various aggregates at a predetermined mixing ratio, And mixed and supplied to the construction site in an individually packaged state, the manufacturing cost of the product can be reduced by consistent processing, and the product can be installed in a clean state without being influenced by temperature.

Description

Automation equipment and aggregates for processing aggregates for normal temperature ascon

FIG. 1 is a general schematic view showing an automatic facility of an embodiment of the present invention; FIG.

FIG. 2 is a planar view of the automation equipment of the present invention; FIG.

FIG. 3 (a) and FIG. 3 (b) are a front view and a side view of the aggregate conveying unit and the storage tank of the above-described processing apparatus.

Fig. 4 (a) and Fig. 4 (b) are sectional views showing the layer distribution of each aggregate when the ascon is cast.

5 is a cross-sectional view showing the vacuum packaging state of the aggregate of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: Aggregate 11: Conveyor belt

20: Screen 30: Drying furnace

40: first dust collector 40 ': second dust collector

42: Compressors 70a, 70b:

70c, 70d, 70e, 70f: storage hopper 80, 80 ': quantification meter

100: Central control system

The present invention relates to an automatic facility for processing an aggregate for normal-temperature ascon and an aggregate thereof, more particularly to a process for automatically processing and packaging asphalt-concrete (hereinafter abbreviated as ascon) The present invention relates to an automation facility for processing an aggregate for use in a room temperature asphalt which can be applied without heating under a temperature, and an aggregate for use in a room temperature asbestos.

Generally, in the construction of an ascon, a hot construction method in which various kinds of aggregates and additives are mixed and heated at a short distance from the construction site, and the concrete is placed in a state of being maintained at a high temperature (about 120 캜) is common.

In the hot working method described above, stones and dusts of aggregate are scattered in the process of mixing and heating various aggregates and additives, causing pollution causing air to become turbid, and odor is generated due to odor generated during heating .

Especially, when the mixing and heating place of the ascon is a sidewalk or a residential area with high traffic, it will cause not only damages due to dust and odor, but also obstacles to pedestrians and vehicles.

The reason for mixing and heating the aggregate at the construction site is to prevent the coagulation caused by the cooling in the process of moving the prepared ascon and to maintain the temperature suitable for pouring. However, this working method avoids even the working parties And it is uneconomical that the work efficiency is delayed and the construction cost is increased by these points.

In addition, the conventional hot application method has a problem that the high temperature remains after the application, so that it takes a relatively long time until the curing is completed and the passage is inhibited accordingly.

The object of the present invention is to provide an asphalt concrete aggregate which can be automatically processed and packaged at a place isolated from a work site and supplied to a construction site, And to provide an automated facility for processing.

Another object of the present invention is to provide an aggregate for an asphalt at room temperature that can be applied at room temperature without any season.

It is an object of the present invention to provide a process for producing an asphalt pavement comprising the steps of selecting and drying gravel, sand, and crushed stone as main materials of the ascon, respectively, to a predetermined size, and dispersing and storing the dried material in the hopper and various aggregates in a predetermined mixing ratio The additives are dispersed and mixed and supplied to the construction site in an individually packaged state, so that the manufacturing cost of the product can be reduced by coherent processing, and the product can be installed in a clean state without being influenced by temperature do.

Hereinafter, the automation equipment and the aggregate for processing the aggregate for room temperature asbestos according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an overall view showing an automatic equipment according to an embodiment of the present invention. When various kinds of aggregate as constituent materials of an ascon material are carried in and fed into the supply hopper 10 by type, aggregate supplied to the supply hopper 10 Conveyed by the conveyor 11 and passed through a screening process with the screen 20.

The screen 20 through which the aggregate passes has a mesh of a predetermined standard for each aggregate material.

For example, the gravel (aggregate A) and the sand (aggregate B), which become the auxiliary layer, are passed through the screen 20 having a mesh of 25?

The crushed stone material such as granite to be the material of the ascon is prepared so that its particle becomes 8 or less and passes through each screen 20 having a mesh of about 4.7? And 1.2? (Aggregate D) and 1.2φ passage (aggregate E).

On the other hand, when the constituent material of the ascon is made of limestone crushed stone, the crushed stone (aggregate F) of about 3φ passed through the screen 20 of the 4.7φ mesh is selected in the same manner as above.

The aggregated material passing through the screen 20 is supplied to the drying furnace 30 to which hot air is supplied, so that the yield of the aggregate is not more than 0-4%.

A large amount of dust is generated in the drying furnace 30 through which the aggregate passes and the friction of the aggregate or the foreign substances on the surface are separated so that the cyclone 41 for applying the negative pressure to the proper position of the drying furnace 30 And discharges the dust generated in the drying furnace (30) to the first dust collector (40).

The fine particles in the dust collected in the filter of the first dust collector 40 are removed by the compressor 42 and the relatively large particles are discharged to join the aggregate discharged to the outlet of the drying furnace 30.

The aggregate dried through the drying process is moved upward by the bucket elevator 50 to be transported to a high place and at the same time a plurality of cascades 70a, 70b, 70c, 70d, 70e and 70f, respectively.

FIG. 2 is a plan view of the automatic equipment. FIG. 3 (a) and FIG. 3 (b) are a front view and a side view of the storage tank of each aggregate. In the tilings 70a and 70b, (Aggregate A) and sand (aggregate B) are weighed and stored in a quantitative meter (80) as required, packed in a vinyl bag (P), and then shipped.

The aggregate C, the aggregate D, the aggregate E, and the aggregate F, which are the main constituents of the crushed stone having different particle sizes, that is, the main constituents of the ascon are dropped and stored in the storage hoppers 70c to 70f, respectively.

In other words, the siro and the storage hopper are used to adjust the amount of the aggregate to be sorted in the dry state and to supply the aggregate to the next process by the amount necessary for the construction. It is preferable to install a position sensor.

On the other hand, when the amount of the aggregate exceeds the capacity of the storage hopper, it is stored in the stock hopper 70 'formed at one side thereof.

The agglomerates of the crushed stone stored in the respective storage hoppers 70c to 70f are mixed into the mixer 82 through the mixing hopper 81 by a predetermined amount according to the mixing ratio and the additive EML, And discharged into a metering system 80 ', weighed to a predetermined weight, vacuum packed and shipped in a plastic bag P,

The reason for the vacuum packing of the coated aggregate is to prevent curing when in contact with air and to improve the dispersibility when the ascon is applied at room temperature (see Fig. 5).

The whole processes such as the supply-sorting-drying-distributing-mixing and packaging process of the above-mentioned materials are controlled by the central control system 100.

Meanwhile, the dust and the like generated in the process of distribution from the dispensing process are collected by the second dust collector 40 'connected to each device by the line, and the compressor 42, like the first dust collector 40, Lt; / RTI >

4 (a) and (b) are cross-sectional views showing the distribution of layers of each aggregate when casting the ascon, wherein the aggregate A, the aggregate B, and the aggregate E, Resin or the like is applied, and the auxiliary layer is formed by roll-forming.

The thickness of the auxiliary layer is determined considering the softness of the ground and the placement surface of the ascon, which forms the surface layer (aggregate C + D + F), and its thickness is not limited.

If the construction site is a solid base, it is also possible to directly place the ascon on the surface as in Figure 4 (b).

On the other hand, the material mixing ratio of the room temperature ascon produced by the above process is as follows.

[Example 1]

Standard room temperature ascon (when the main aggregate is crushed stone of granite):

Aggregate C - 65.67% with a particle size of about 8ø or less and over 4.7ø

Aggregate D - 11.93% with a particle size of less than about 4.7ø and greater than 1.2ø.

Limestone aggregate with a particle size of about 3 F F - 16.93%

Additive (EML) - 5.97%

[Example 2]

Advanced high temperature ascon (If the main aggregate is crushed stone of granite):

Aggregate D - 75% having a particle size of about 4.7ø or less and 1.2ø or more,

Limestone aggregate with a particle size of about 3ø F - 18.67%

Additive (EML) -6.33%

[Example 3]

Even when the main material of the ascon used in Examples 1 and 2 is a limestone crushed stone other than granite, the composition ratio is the same as above.

However, the composition ratio of each aggregate except the additive is about ± 3 ~ 5%.

As a result, it can be seen that the characteristics of the ascon varies depending on the density of the aggregate particles and the addition amount of the additive, and the products corresponding to the characteristics of the ascon are selected according to the conditions of the construction site.

Atmospheric ascon packed in a vacuum state maintains an initial mixed state during 2 to 4 months under an atmospheric temperature, that is, a state in which it is not possible to harden or coagulate, so that it can be circulated for a long period of time.

In addition, when constructing the ascon of the present invention, since the packing stand is opened and the container is unloaded without being heated, the construction method is very simple and the construction time can be shortened.

Particularly, the allowable range of the atmospheric temperature at which room temperature ascon can be applied is about -45 ° C to 60 ° C, so that it can be freely applied even in the case of cold winter or hot summer. It is possible to pass through the vehicle as well as the person.

As described above, since the aggregate material of the ascon is processed in the closed space, the finished product in which the aggregate and the additive are mixed is manufactured and supplied to the construction site, thereby preventing scattering of dust generated during processing, It is possible to improve the environment.

In addition, since the material of the ascon is completed and supplied in a packed state, the package is opened in a state in which no phase change is applied, and the construction is completed, so that the construction method and time can be shortened.

In addition, there are many advantages such as ease of transportation and improvement of circulation method, and construction cost can be reduced.

Claims (3)

Bringing various kinds of aggregate as constituent materials of the ascon and bringing them into the supply hopper 10 by type; Conveying the aggregate supplied to the feed hopper 10 by the conveyor 11, passing through a screen 20 having a mesh of a predetermined standard according to the grain size of the aggregate, and sorting; Supplying the selected aggregate to a drying furnace (30) to which hot air is supplied to dry the aggregate so that the moisture content thereof is 0 to 4% or less; Installing a cyclone (41) for applying a negative pressure to a proper position of the drying furnace (30), discharging the dust generated in the drying furnace (30) to the first dust collector (40) to remove dust; The dried aggregate is conveyed upward by the bucket elevator 50 and then conveyed through the ramps formed in the distributor 60 to the plurality of cascades 70a and 70b and the plurality of storage hoppers 70c to 70d 70f, respectively; The crushed stone aggregates stored in the storage hoppers 70c to 70f are mixed into the mixer 82 through the mixing hopper 81 by a predetermined amount according to the mixing ratio and the additive FML which performs the condensation operation is supplied from the reservoir 90 by a predetermined amount Mixing and coating the aggregate; Weighing the coated crushed stone aggregate to a predetermined weight through a quantifying system 80 ', vacuum packing and shipping it with a vinyl bag P; And controlling the whole process of shipment from the initial stage of feeding the aggregate to the hopper (10) by the central control system (100). (Aggregate A) and sand (aggregate B) serving as an auxiliary layer are passed through a screen 20 having a mesh of 25?, And the crushed stone such as granite, which is a material of the ascon, (Aggregate C), 1.2 탆 catching (aggregate D), and 1.2 통과 passing-through (aggregate E) by passing through the screen 20 having a mesh of about 4.7? (Aggregate F) having passed through the screen 20 of about 4.7 mm mesh in the case of limestone crushed stone is selected, and 65.67% of the aggregate C, 11.93% of the aggregate D, 16.93% of the aggregate F, 5.97% by weight, and vacuum-packed. The aggregate for normal-temperature ascon. The method according to claim 2, wherein the selected plurality of crushed stone aggregates are mixed in a weight ratio of 75% of the aggregate D, 18.67% of the aggregate F and 6.33% of the additive (EML) .