KR100359956B1 - An equipment for remaking used aggregates and a paving method for pervious concrete with the remade aggregates - Google Patents

Abstract

The present invention relates to an aggregate recycling apparatus for waste concrete and a method for paving permeable concrete using the aggregate recycled by the apparatus. Aggregate regeneration device of the present invention is to allow the separation of the soft aggregates, mortar, bricks, blocks, etc. mixed with the crushed recycled aggregates completely to remove and remove, to produce a homogeneous recycled aggregate of the wide and long diaphragm 21 A high frequency vibrator 20 in which a resistance protrusion 23 is raised on an upper surface thereof in a direction perpendicular to the length direction and a high frequency vibration motor 24 is mounted on one side thereof; The main body 10 has a space for accommodating the diaphragm 21 of the high frequency vibrator 20, and a hopper 12 is formed on one side of the diaphragm 21, and an outlet 13a is formed at the other end thereof. ; It is installed on the inclined surface of the discharge port (13a) of the main body 10 and is provided with a screen 15, which is a mesh net, which is transported while being filtered through only the residual particles in the recycled aggregate.

Description

An equipment for remaking used aggregates and a paving method for pervious concrete with the remade aggregates}

The present invention relates to an aggregate recycling apparatus for waste concrete, and more particularly, to recycle waste aggregates from crushed waste concrete, and to remove aging mortar and foreign matter attached to the recycled aggregates to obtain high quality aggregates. It relates to an aggregate recycling apparatus.

In modern times, concrete has been promoted for economic growth, national land construction, social infrastructure construction, industrial infrastructure and factory construction, as well as large-scale residential facilities. Since the concrete facility has aged over 30-40 years, construction waste This increases exponentially.

Among the construction wastes, most of the waste concrete is used, and in order to dispose of it, it is necessary to transport it to a landfill site, so long distance transportation is inevitable. It is a problem. This method of landfilling of waste concrete has come at an urgent time when it is impossible to rely only on landfilling for simple treatment, as landfills have been reduced and new landfills have become difficult to secure.

On the other hand, as the demand for aggregates, which have been abundant, has also exploded, supply of total aggregates is limited, resulting in supply and demand imbalance of aggregates, which is gradually increasing.

Therefore, the conventional method of producing recycled aggregates for use of such waste concrete and the method of using recycled aggregates produced by this method are listed.

First, the first crushed by mobile crusher in the field to obtain the recycled aggregates and use the recycled aggregates for roadbeds, landfills, and fillets.

Second, it is divided into coarse recycled aggregates and fine recycled aggregates by crushing in fixed crusher, and divided the recycled aggregates into excellent quality and low quality, and use the high quality ones for recycled concrete and asphalt concrete. It is used for roadbed, landfill, and fill material.

Third, in order to produce high quality recycled aggregates, aging mortar attached to the recycled aggregates should be removed, and a regenerator is used to remove them. The regenerators include jaw crushers and gyre crushers. Only high-quality recycled aggregates selected by grinding with a gyratory crasher, a roll crasher, an impact crasher, a ball mill, a rod mill are used.

The recycled aggregates crushed by such crusher are selected and used only by particle size or shape, and the above system cannot produce recycled aggregates of excellent quality, and ultimately, it is impossible to produce recycled aggregates of the Korean industrial standard. Production was just a theory.

Therefore, the existing aggregate recycling method of waste concrete is to simply crush the waste concrete in the crusher and sort it by particle size or shape, so the production method of recycled aggregate is not realistic and the quality of recycled aggregate is difficult and the quality is not uniform. Use was extremely sluggish.

In addition, the existing method for producing recycled concrete using the recycled aggregate, washing and sorting the recycled aggregate crushed in the crusher to use the general aggregate up to 50% or if the quality does not meet the specifications when producing concrete or polymer in the recycled aggregate Adsorption of emulsion mortar, emulsion resin, etc. was used to reinforce the aged mortar part of the recycled aggregate.

Mixing general aggregates with recycled aggregates or adsorbing polymers as described above has the disadvantage that the production cost of recycled concrete is not only high, but also cannot be a fundamental cure for poor quality of recycled aggregates, and the quality of the produced product is homogeneous. Because of this, quality control is difficult.

When the recycled aggregates are recycled, there is a problem of producing recycled concrete in a line that suffers a certain quality defect, and thus, there is a problem of strictly selecting recycled aggregates when producing recycled concrete and road paving materials.

In particular, in the packaging method of compacting the rollers, the aging mortar of the recycled aggregates on the surface of the recycled aggregates is damaged when the rollers are compacted, so that the quality cannot be guaranteed and dust may be generated, resulting in uneven strength. There was.

The purpose of the present invention is to research and develop in order to solve the above-described conventional waste and problems, homogeneous because it is completely crushed and removed to remove the foreign matter, such as soft aggregate, aging mortar, brick, block mixed in the crushed recycled aggregate It is to provide an aggregate recycling apparatus for waste concrete that can produce recycled aggregates.

Another object of the present invention is to provide a method for paving permeable concrete using recycled aggregate produced by the aggregate recycling apparatus.

1 is a cross-sectional view schematically showing an apparatus for recycling aggregate of waste concrete according to the present invention;

2 is a perspective view showing the high frequency vibrator of the present invention,

3 is a cross-sectional view showing another embodiment of the aggregate recycling apparatus of the present invention;

Figure 4 is a perspective view showing another embodiment of the high frequency vibrator of the present invention,

Figure 5 is a perspective view showing another embodiment of the high frequency vibrator of the present invention.

<Description of the reference numerals for the main parts of the drawings>

10: main body 11: soundproof member

12: Hopper 13, 13a, 14, 14a: outlet

15: Screen 16a, 16b: Belt Conveyor

17: vibration absorbing member 20: high frequency vibrator

21: diaphragm 21a: vibrating body

22: hole 23: resistance protrusion

24: high frequency vibration motor 25: high frequency controller

Aggregate recycling apparatus of the present invention is a high frequency vibrator having a resistance projection in the vertical direction of the longitudinal direction on the upper surface of the wide and long diaphragm and a high frequency vibration motor is mounted on one side; A main body having a space for accommodating a diaphragm of the high frequency vibrator and having a hopper formed on an upper portion of one of the diaphragms and an outlet formed at the other end thereof; It is installed at the lower part of the outlet of the main body and is provided with a grommet screen which is transported while filtering only the remaining particles in the recycled aggregate to the lower part.

The upper part of the diaphragm is provided with a plate having a different resistance projection corresponding to the resistance projection of the diaphragm so that the reproducing aggregate placed thereon restricts the springing or forward movement caused by the vibration of the vibration motor, and the high frequency vibration motor controls its frequency. The high frequency controller is electrically connected to the diaphragm, and hundreds to thousands of holes are formed in the diaphragm at equal intervals, and the main body at the lower position of the diaphragm is formed with an outlet narrowing toward the lower portion thereof.

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail.

1 is a cross-sectional view schematically showing an apparatus for recycling aggregate of waste concrete according to the present invention, and FIG. 2 is a perspective view showing the high frequency vibrator of the present invention.

As shown in the figure, the main body 10 is provided with a soundproof member 11 on the inner surface, and one side thereof is provided with a hopper 12 for injecting the waste concrete crushed by the crusher onto the high frequency vibrator 20, the main body 10 The other end of the) is formed with a discharge port (13a) for guiding and discharging the coarse recycled aggregate through the diaphragm 23, the discharge hole (13a) receives the recycled aggregate through the diaphragm 21, The screen 15 which filters out only particle | grains is provided. Residual particles refer to particles of extremely small particle size that cannot be used as aggregate because they are broken or crushed by aggregates. Another outlet 13 is formed at the bottom of the screen 15 and the outlets 13 and 13a. At the bottom of the belt conveyor 16a, 16b for transporting the remaining particles and recycled aggregate is installed.

The high frequency vibrator 20 installed inside the main body 10 is formed of a wide and long rectangular diaphragm 21, and a resistance protrusion 23 is raised in a perpendicular direction of the longitudinal direction, and vibration transmission is performed on the lower surface thereof. A spring, which is a plurality of vibration absorbing members 17, is supported to prevent it.

On the side of the diaphragm 21 is mounted a high frequency vibration motor 24 for vibrating it at a predetermined frequency, the high frequency vibration motor 24 is electrically connected to a high frequency controller 25 for controlling it. The diaphragm 21 is illustrated and described as being formed of a flat rectangular plate, but as shown in FIG. 4, the diaphragm 21 may be formed of a cylindrical vibrator 21a.

The diaphragm 21 is preferably installed horizontally so that the recycled aggregate is advanced by vibration. However, the diaphragm 21 may be installed to be inclined up to 20 ° from the side of the hopper 12, and the inclination angle of the diaphragm 21 may be set to 20 degrees. The reason for limiting it below ° is that when the inclination angle of the diaphragm 21 is large, since the recycled aggregate placed on the diaphragm 21 is easily rolled down, the polishing effect of the surface of the waste concrete cannot be obtained.

The inner surface of the main body 10 in the upper position of the diaphragm 21 prevents damage to the main body 10 and moves forward the regenerated aggregate even if the recycled aggregate placed on the diaphragm 21 springs up due to the vibration of the vibration motor 24. In order to restrict, the board | plate material 26 which has the other resistance protrusion 27 corresponding to the resistance protrusion 23 of the diaphragm 21 is fixed. The plate 26 is fixed and installed inside the main body 10, but the high frequency vibration motor 24 may be installed to vibrate like the diaphragm 21.

Aggregate recycling apparatus for waste concrete configured as described above, first, the recycled aggregate produced in the crusher is passed through the sorting machine by particle size, aging mortar attached to the recycled aggregate, block pieces mixed with the recycled aggregate, brick pieces, paint paper Removes particles of foreign matter such as trees and wood.

As such, when the high frequency vibration motor 24 is operated on the recycled aggregate from which the residual particles are removed, the diaphragm 21 is vibrated. At this time, the frequency of the vibration plate 21 of the high frequency vibrator 20 is 3,600VPM or more, and the input amount of the recycled aggregate should be appropriately adjusted according to the horsepower of the high frequency vibration motor 24, when the capacity is insufficient, The high frequency vibration motor 24 can be installed and used. In addition, the hopper 12 is preferably sprayed with water so as to reduce the dust crushed or polished in the recycled aggregate as the vibration plate 21 of the high frequency vibrator 20 is vibrated.

As such, when the recycled aggregate sorted by particle size is supplied to the hopper 12 of the main body 10 while the high frequency vibrator 20 is operated, the high frequency vibrator 20 is supplied to the inlet side of the vibrating plate 21 of the high frequency vibrator 20 and the diaphragm ( The recycled aggregates supplied above 23 are advanced while being vibrated by the vibration of the diaphragm 21.

As such, the recycled aggregate is moved on the diaphragm 21 of the high frequency vibrator 20 due to the vibration, and the sharp edges are crushed or polished by friction between the recycled aggregates.

While the recycled aggregate passes through the diaphragm 21 of the high frequency vibrator 20, the resistance protrusion 23 of the upper surface is provided to limit the advancement when the recycled aggregate passes, thereby effectively regenerating the recycled aggregates. At this time, the higher the frequency of the high frequency vibrator 20, the sharper part of the recycled aggregates are crushed by the trembling, and the soft mortar continues to be scraped as these are repeated repeatedly.

Even if the amount of recycled aggregate introduced through the hopper 12 of the main body 10 is large, the plate body 26 on the upper side of the diaphragm 21 is installed, so that the space between the diaphragm 21 and the plate body 26 is filled. As it moves effectively, the pointed part of the recycled aggregate is crushed or polished.

The frequency of the high frequency vibrator 20 to 3,600VPM or more is to increase the power by generating an invisible residual vibration (small amplitude), by installing a variety of resistance projections 23 on the diaphragm 21 As it acts as a resistance to the flow of recycled aggregate, the polishing can be increased.

In this way, while passing through the diaphragm 21 of the high frequency vibrator 20, the recycled aggregates are crushed or pulverized, and of course, the recycled aggregates fall to the outlet 13a of the main body 10, and this outlet 13a Residues passing through the screen 15 pass through the screen 15 while the residual particles are filtered by the screen 15 and the residual particles filtered down by the screen 15 fall into the outlet 13. The remaining recycled aggregate is guided and dropped along the discharge port 13a. At this time, the recycled aggregate remains solid concrete on the gravel surface while passing through the diaphragm 21 of the high frequency vibrator 20.

The remnant particles and recycled aggregates are conveyed through the respective belt conveyors 16a and 16b installed under the discharge ports 13 and 13a.

The recycled aggregate produced in this way should be less than 5% of coarse recycled aggregate, less than 10% of fine recycled aggregate, and the specific gravity should be more than 2.2. Lose wear rate of less than 40% of coarse recycled aggregate, and particle shape determination performance rate Silver coarse recycled aggregate should be 55% or more and fine recycled aggregate should be 53% or more.

3 and 4 are views showing another embodiment of the diaphragm in the high frequency vibrator of the present invention, in which a myriad holes 22 are formed in a rectangular plate 21 at regular intervals, and the lower portion of the diaphragm 21 The main body 10 has a discharge port 14 receiving the remaining particles falling through the hole of the diaphragm 21 to the lower portion, and the lower portion of the discharge port 14 passed through the hole 22 of the high frequency vibrator 20 Belt conveyor 16a for transporting particles is installed.

Aggregate recycling apparatus for waste concrete according to another embodiment as described above is bumped while the recycled aggregate is moved on the diaphragm 21 of the high frequency vibrator 20 due to the vibration so that the sharp edges are crushed or polished by the friction between the recycled aggregates do.

As such, the remnants collided or crushed by the recycled aggregates while passing through the diaphragm 21 of the high frequency vibrator 20 pass through the holes 22 of the diaphragm 23 to the outlet 14 below the main body 10. Falling particles falling on the discharge port 14 are transferred to the belt conveyor 16a and discharged.

While passing the diaphragm 21 of the high frequency vibrator 20, the recycled aggregate remains only on the surface of the gravel, and the recycled aggregate falls to the outlet 14a at the end of the diaphragm 21 and the outlet 14a. It is conveyed through the lower belt conveyor 16b.

Meanwhile, the diaphragm 21 is formed and described as a rectangular plate, but may be provided as a cylindrical vibrating body 21a as shown in FIG. 5, and residual particles in the recycled aggregate are removed at a position below the center line of the vibrating body 21a. Multiple holes should be formed at predetermined intervals.

The recycled aggregate produced as described above should be sorted by the size of particle size according to the use, and when used for general concrete, it can be used to meet the KS standard, but when producing for water-permeable concrete, The compounding ratio should be different depending on whether it is used for the purpose of use, for the surface layer, or for packing with drainage.

When used for the base of permeable packaging, the size of particle size passes 100% in 40mm sieve, 90-100% in 25mm sieve, 20-80% in 13mm sieve, and 0- in 4mm sieve. The maximum compaction standard of recycled aggregate that passes 30% and passes 0-20% in 2.5mm sieve is 1㎥, 200-500kg of cement, 80-150kg of water, and 2% of cement use (4-10kg) Within this range, the slump is 0-3cm to produce concrete, and the concrete is laid and packed with rollers.

Aggregates recycled by the present invention can also be used for the surface layer of drainage or permeable concrete pavement, the composition of which is somewhat different depending on whether the pavement is for driveway or sidewalk use.

When used for the surface layer of drainage or permeable concrete pavement, when used for driveway, it passes 80-100% in 19mm sieve, 40-90% in 10mm sieve and 0-20% in 5mm sieve Aggregate is used, and when it is used for sidewalk, aggregate is used to pass 70-100% in 8mm sieve and 0-20% in 5mm sieve. 250-500kg for water, 80-150kg for water, and admixtures within 2% (5-10kg) of cement usage.

And, in applying the aggregate recycled by the present invention to the color permeable concrete, the size of the particle size passes 90-100% in the 13mm sieve, 70-100% in the 10mm sieve, 60-100% in the 8mm sieve It passes 10-60% in 5mm sieve, 0-30% in 2.5mm sieve and 0-10% in 1.2mm sieve. -150kg, admixture should use water reducing agent within 3% (6.6-12kg) of cement usage, pigment within 10% (22-40kg) of cement usage and slump 0-3㎝ Produce concrete, install this concrete and pack it with roller.

In addition, the recycled aggregates of the present invention can be used as aggregates such as bricks, blocks, interlocking blocks, boundary stones, raft blocks, etc. classified as 13 mm or less, and classified aggregates in the range of 13-40 mm to stabilized layer aggregates on the road. Can also be used.

As described in detail above, the aggregate recycling apparatus for waste concrete according to the present invention, unlike the prior art that simply selects the waste concrete crushed by the crusher by particle size or shape by the soft aggregate mixed in the waste concrete, Foreign matter such as mortar, bricks, blocks are completely crushed and removed to produce a homogeneous recycled aggregate.

In addition, the aggregate recycled by the present invention can be used as a base aggregate for concrete pavement, can be used as the aggregate of the surface layer of permeable or drainage concrete pavement by classifying the particle size, and also used as aggregate of blocks or bricks As it may be, its utilization is very wide.

Claims (9)

A high frequency vibrator 20 in which a resistance protrusion 23 is raised on the upper surface of the wide and long diaphragm 21 in a perpendicular direction thereof and a high frequency vibration motor 24 is mounted on one side thereof; The main body 10 has a space for accommodating the diaphragm 21 of the high frequency vibrator 20, and a hopper 12 is formed on one side of the diaphragm 21, and an outlet 13a is formed at the other end thereof. ; It is installed on the inclined surface of the discharge port (13a) of the main body 10, the aggregate recycling apparatus for the waste concrete, characterized in that the screen 15 which is transported while being filtered while passing only the remaining particles in the recycled aggregate down. According to claim 1, wherein the diaphragm 21 is formed in the whole area of hundreds to thousands of holes 22 at equal intervals and the body 10 in the lower position of the diaphragm 21 becomes narrower toward the lower portion thereof. Aggregate recycling apparatus for waste concrete, characterized in that the outlet 14 is formed. According to claim 1, The upper portion of the diaphragm 21 is characterized in that the plate 26 having a resistance projection 27 is installed on the lower surface to limit the forward movement of the crushed recycled aggregate placed thereon to increase the friction Aggregate recycling apparatus for waste concrete. The apparatus of claim 1, wherein the high frequency vibration motor (24) is electrically connected to a high frequency controller (25) to control the frequency thereof. (Correction) For the aggregate recycled by the aggregate recycling apparatus of paragraph 1, the size of particle size passes 100% in 40mm, 90-100% in 25mm, 20-80% in 13mm and 4mm Classified as 0-30% passing through the sieve and 0-20% passing through the 2.5mm sieve, the maximum compaction standard of this recycled aggregate is 1㎥, 200-500kg for cement, 80-150kg for water, and a water reducing agent for admixture. A method of producing concrete with a slump of 0-3cm within 2% (4-10kg) of the amount used, and laying the concrete and then compacting it with a roller to wrap the base of concrete pavement. (Correct) The aggregate recycled by the aggregate recycling apparatus of paragraph 1 is classified into 80-100% in 19mm sieve, 40-90% in 10mm sieve, and 0-20% in 5mm sieve. In the maximum compaction standard of such recycled aggregates of 1㎥, 250-500kg of cement, 80-150kg of water, and admixtures within 2% (5-10kg) of the amount of cement are used to produce concrete. Method of paving the surface layer of concrete pavement for driveway after compacting it with roller after installation. (Correction) The aggregate aggregate passed by 70-100% in 8mm sieve and 0-20% in 5mm sieve is classified into aggregate recycled by the aggregate recycling apparatus of claim 1, and the maximum compaction standard of recycled aggregate of such granularity is 1㎥ For example, cement is used within 250-500kg, water is 80-150kg, and admixture is used within 2% (5-10kg) of cement production to produce concrete. How to pave the surface layer of concrete pavement. (Correction) For the aggregate recycled by the aggregate recycling apparatus of claim 1, the particle size passes 90-100% in 13mm sieve, 70-100% in 10mm sieve, and 60-100% in 8mm sieve. Aggregates that pass 10-60% in 5mm sieves, 0-30% in 2.5mm sieves, and 0-10% in 1.2mm sieves are classified into 1㎥ of the maximum compaction standard for such recycled aggregates, and cement is 220-400kg, 80-150kg of water, water reducing agent should be used within the range of 3% (6.6-12kg) of cement, and pigment should be within 10% (22-40) of cement. ㎝ to produce concrete, install this concrete and compact it with a roller to wrap the color-permeable concrete. A method for classifying aggregates having a particle size of 13 mm or less with respect to aggregates recycled by the aggregate recycling apparatus of claim 1 and using the aggregates of bricks, blocks, interlocking blocks, boundary stones, or revetment blocks.