KR100788051B1 - Method For Asphalt Concrete Pavement and Method For Manufacturing Blocks Using Aggregates Reproduced From Waste Asphalt Concrete - Google Patents

Abstract

The present invention relates to a method for paving a road with ascon using recycled aggregates of crushed or cut waste ascon and a method for producing a block. The present invention is a step of classifying the aggregate into a predetermined particle size distribution after crushing the waste ascon; Mixing 1 part by weight of the aggregate classified by the above step with 0.01-0.10 parts by weight of emulsion emulsion and latex corresponding to 5-50% by weight of the amount of asphalt used; Mixing the mixture of the above process with 0.02-0.12 parts by weight of cement and water with respect to 1 part by weight of the aggregate to produce ascon having a porosity of 8-30% and a slump value of 0-3 cm; And it is to provide a method for paving the road, or manufacturing a block in a conventional manner using the ascon produced in the electrical process.

Waste asphalt, recycled aggregate, emulsified asphalt, latex

Description

Method for Asphalt Concrete Pavement and Method For Manufacturing Blocks Using Aggregates Reproduced From Waste Asphalt Concrete}

The present invention relates to a method for paving a road with ascon using recycled aggregates of crushed or cut waste ascon and a method for producing a block.

Waste ascon is a kind of waste produced when the asphalt pavement is demolished or the surface of such pavement is cut off as the road paved with the laid ascon ages and reaches its end of life. These waste ascons have been disposed of until a while ago, but recently, as recycling resources became active, some recycled aggregates extracted from waste ascons were mixed with heat mixed ascons (about 10-20%). Some of them are used as auxiliary base material for road pavement. However, since most of the waste ascon is still disposed of, it is necessary to prepare fundamental measures for recycling the waste ascon recycled aggregate.

Ascon aging means that the oil contained in asphaltene, one of the main components of asphalt, is evaporated, leaving only asphaltene. Therefore, the aging of asphalt is not only a physical change (evaporation of oil) of asphaltenes, but also a chemical change such as the change of the properties of asphaltene itself. Therefore, proper addition of (evaporated) oil to asphaltenes can have the effect of regenerating asphalt quality.

However, in the method of using recycled ascone aggregate for road pavement or block manufacturing, the following conditions must be satisfied in order to have practical applicability in terms of economy and convenience.

First, the production of ascon should be a room temperature mixing method. In the production of ascon using waste ascon recycled aggregate, the heat-mixing method of applying high heat is not suitable. When the waste ascon recycled aggregate is heated at a high temperature, the aged asphalt attached to the surface of the recycled aggregate is burned and loses its function as asphalt. In addition, cracks are generated in the recycled aggregate due to such high heat, thereby deteriorating the durability of the packaging material.

Second, the curing speed of ascon using recycled aggregated asphalt asphalt should be fast. If the curing time is delayed after pavement, the opening of vehicles and traffic will be delayed. Considering the enormous amount of traffic these days, the practicality as a pavement material is significantly reduced if the curing period is over 48 hours after pavement. Therefore, curing time should be within 48 hours.

Third, the durability of the product using waste ascon recycled aggregate should be excellent. This is because when paving roads or manufacturing blocks using waste ascon recycled aggregates, recycled aggregates cannot be used unless the road pavement or block durability is secured. Therefore, even when using recycled ascon aggregate, the durability should be as good as using the general aggregate.

Although much research has been conducted on the development of waste ascon recycled aggregate utilization technology that satisfies these basic conditions, no satisfactory technology has been published.

As a patent related to the prior art of recycling recycled aggregate of waste ascon, patent registration No. 0243926 developed by the present inventors (concrete for road paving using crushed waste ascon and its manufacturing method) and patent application No. 2005-256 (waste Asphalt concrete manufactured by recycling asphalt concrete). All of these inventions use asphalt recycled aggregates of waste ascon to install ascon at room temperature, and in particular, it relates to pavement-like concrete road pavement with few voids.

The invention of the former (patent registration No. 0243926) relates to concrete for road pavement using pulverized waste ascon and a manufacturing method thereof. Specifically, the emulsified asphalt makes the crushed waste ascone recycled aggregate, and further, the strength is increased by cement. The present invention relates to a method of paving a road by being expressed. In this invention, the emulsified asphalt is coated on the surface of the recycled asphalt asphalt aggregate, and serves as a medium for the cement and waste asphalt recycled aggregate added after that is integrated. However, in the present invention, as in general cement concrete pavement, it is assumed to use more than 250kg of cement per 1㎥, the thickness of the road pavement is thicker, the economical efficiency is lowered, and the need to install joints as in general cement concrete pavement There is a problem that the surface is easily dried due to the action of the emulsifier contained in the cement and the emulsion asphalt used in a large amount, and the surface strength is weak, which is not applied to the road pavement yet.

The latter (patent application No. 2005-256) relates to asphalt concrete produced by recycling waste asphalt concrete, and specifically, is attached to the surface of the recycled asphalt concrete aggregate by a mixture of toluene and SBS (Styrene Butadiene Stylene) The present invention relates to an asphalt concrete produced by emulsifying asphalt, and adding and mixing cement and water thereto. In the present invention, the production process is cumbersome, and in particular, toluene, which is used to emulsify the asphalt attached to the waste ascone recycled aggregate, has a risk of being easily ignited when it comes into contact with fire, which is somewhat problematic in view of practical invention.

The present invention was devised to solve the problems of the prior art, and an object of the present invention is to enable the production of ascon using waste ascon recycled aggregate by the normal temperature mixing method, and to allow the curing of the ascon within 48 hours. In this case, the durability of the package or manufactured block laid by the asphalt concrete is improved.

Another object of the present invention is to appropriately adjust the use ratio of asphalt and cement, so that asphalt plays a major role and cement plays a secondary role, so that the package or block has semi-rigid properties. That is, by combining the flexibility of the asphalt and the rigidity of the cement as appropriate to make the semi-stiffness of the intermediate properties.

   Specific technical configurations for implementing the object of the present invention are as follows.

First, in producing ascon using waste ascon recycled aggregates, in order to apply the room temperature mixing method (not by heating), there should be a method for sufficiently bonding between the recycled aggregates. To this end, in the present invention, emulsified asphalt is used to emulsify the old asphalt adhered to the surface of the recycled aggregate (since such emulsification action of the emulsion is not sufficient adhesive strength), recycled aggregate using water-soluble latex (Latex) Adopted a technical configuration to strengthen the adhesion of the liver. Latexes used in the present invention include SBR (Styrene Butadiene Rubber), BR (Butadiene Rubber), NBR (Nitrile Butadiene Rubber) and the like.

Second, in general, when the amount of cement used is more than 100kg in aggregate 1000kg it becomes rigid. Therefore, in the present invention, the amount of cement used in 1000 kg recycled aggregate was 20-120 kg. As such, when the amount of cement used is small, the cement plays a secondary role while the asphalt plays a main role and thus has semi-rigid properties. In addition, when a small amount of cement is used, the cement acts as a filler and at the same time serves as a water absorber to assist the secondary curing.

Third, in order to shorten the curing time, the moisture contained in the produced ascon should be able to evaporate as short as possible. In the present invention, for this purpose, ascon was configured to have porosity, that is, porosity of 8-30%. That is, in the present invention, the curing rate can be increased by quickly discharging the water contained in the latex and additionally added water, and the ascone produced for this purpose is made of porous. On the other hand, when the asphalt concrete is made porous, the water / cement ratio may be small, thereby reducing the slump value even though the amount of cement used is small, thereby allowing compaction of the roller after installation. And since the compaction of the roller is possible, the strength of the ascon pavement can be increased by the maximum compaction by the roller.

In summary, the technical configuration of the present invention is summarized as follows: (1) to increase the adhesion between recycled aggregates using emulsified asphalt and water-soluble latex to apply the room temperature mixing method, and (2) cement to make the product have semi-rigid properties. It is used as 20-120kg for 1ton recycled aggregate, and (3) to shorten the curing time, and to form ascone porous so that the porosity is 8-30% in order to enable compaction for quality improvement.

In the present invention, the control of ascone with a porosity of 8-30% is based on the rapid evaporation of water contained in the water-soluble latex used for improving adhesion and water added for cement hydration reaction and workability. It is performed for two purposes: to induce (to reduce curing time) and to enable compaction by Laura et al. (To improve durability).

Ascon porosity is measured by the maximum theoretical density and measured density, and once the porosity is calculated, the amount of recycled aggregate can be calculated thereby. The formula for calculating porosity and the amount of recycled aggregate used in the formulation design is as follows.

Recycled aggregate usage =

In the above formula, 900 means the volume limiting porosity in the volume 1㎥. Since the volume of 1 m 3 is 1000 l, when the porosity is specified as 10%, 1 m 3 is calculated to 900 l except for the porosity 10%.

In the porosity calculation formula, the measured density means the density measured directly by collecting cores in the field, and the theoretical density is shown in the table below.

      Table 1: theoretical density

 division Ascon material Sum Remarks Oil painting asphalt Latex Recycled Aggregate cement water Production mix ratio (kg) A 12 3.6 888.4 60 36 1,000 importance B 1.02 1.00 2.557 3.15 1.00 Volume (ℓ) C 11.76 3.6 347.44 19.05 36 417.85 (D) A / B Volume fraction (%) E 2.81 0.86 83.15 4.56 8.62 100 (C / D) × 00 Absolute Volume Ratio (%) F 28.1 8.6 831.5 45.6 86.2 1,000 Absolute theory density G 28.6 8.6 2126.1 143.6 86.2 2,393.1 F × B

       For example, if the measured density is 2,095, since the theoretical density is 2,393.1 in Table 1 above, the porosity is calculated as follows.

As described above, in order to manage the porosity of 8-30%, the particle size distribution of waste asphalt recycled aggregate should be appropriately determined. Particularly, the particle size distribution of recycled aggregate should be determined in consideration of the fact that the amount of cement used in asphalt concrete used as recycled aggregate is different from that of porous cement concrete using general aggregate.

 Emulsion asphalt, the water contained in the latex or added water is evaporated, and the space occupied by the water is formed into voids. In the present invention, the amount of cement used is much smaller than that of general permeable cement concrete. Less void gap In addition, the emulsified asphalt used in the present invention is 1.0-10% of the total asphalt content, but considering that the asphalt solids content in the emulsion asphalt is generally about 50%, the solid asphalt contained in the emulsified asphalt is actually 0.5-5%. Since it is in the range of, the effect of emulsified asphalt on the void is very small.

Even when paving the road with room temperature mixed type asphalt concrete using waste ascon recycled aggregates, when the compaction is made with Laura, the grain shape of the coarse aggregate and the asphalt aggregate attached to the coarse aggregate is changed. However, when the room temperature mixing method is applied, the degree of change is not so severe that there is no problem in forming a predetermined pore. However, in summer, when the temperature rises sharply, even if it is by the room temperature mixing method, in the daytime construction, when the temperature of the asphalt rises above 60 ° C by solar heat, the asphalt becomes soft and the asphalt is pressed by the compaction. As a result, the gap between the aggregate and the aggregate is filled, which makes it difficult to maintain a predetermined gap.

In the present invention, however, sufficient voids are formed through the particle size distribution of the recycled aggregate, the use of cement is minimized, and the pores are filled with water (before the water is evaporated before curing). As a result, the asphalt installed in the summer is maintained at room temperature even when the solar heat is strong, and the asphalt is not severely compressed even by the compaction, so that the voids can be maintained.

The particle size distribution of the recycled aggregate to secure the porosity of 8-30% in ascon using the recycled ascon recycled aggregate of the present invention is as follows. Typically, the size of the maximum aggregate will vary depending on the thickness of the road to be paved or the thickness of the blocks to be manufactured. The particle size distribution of aggregates according to the size of these aggregates is based on the percentage of sieve weight.

(1) When the maximum size of recycled aggregate is 25mm:

100% pass through 40 mm sieve, 80-100% pass through 25 mm sieve,

 5-60% pass through 5mm sieve, 0-20% pass through 1.2mm sieve,

Pass 0-10% in a 0.6 mm sieve and pass 0-5% in a 0.3 mm sieve.

(2) If the maximum size of recycled aggregate is 19㎜:

100% pass through 25 mm sieve, 80-100% pass through 19 mm sieve,

5-60% pass through 5mm sieve, 0-20% pass through 1.2mm sieve,

Pass 0-10% in a 0.6 mm sieve and pass 0-5% in a 0.3 mm sieve.

(3) For recycled aggregate maximum size 13mm:

100% pass through a 19 mm sieve, 80-100% pass through a 13 mm sieve,

 10-60% pass through 5mm sieve, 5-40% pass through 2.5mm sieve,

0-30% through 1.2 mm sieve, 0-15% through 0.6 mm sieve,

0-10% passing through 0.3 mm sieve.

(4) When the maximum size of recycled aggregate is 8㎜:

100% pass through a 13 mm sieve, 80-100% pass through an 8 mm sieve,

 30-80% pass through 5 mm sieve, 10-60% pass through 2.5 mm sieve,

Through 5-35% in a 1.2 mm sieve, 0-15% in a 0.6 mm sieve,

0-10% passing through 0.3 mm sieve.

(5) If recycled aggregate maximum size is 5㎜:

100% pass through a 10 mm sieve, 80-100% pass through a 5 mm sieve,

5-60% pass through 2.5mm sieve, 0-30% pass through 1.2mm sieve,

Pass 0-15% in a 0.6 mm sieve and pass 0-10% in a 0.3 mm sieve.

As described in the foregoing, the present invention is a waste ascone aggregate having the above particle size distribution is mixed with asphalt, emulsified asphalt, latex, cement, water, slump 0-3cm, porosity 8-30% room temperature It relates to a method of producing a mixed ascone, paving a road or making a block using the ascone.

The paving body or the block manufactured according to the present invention is semi-thickness which is intermediate between ductility of cement and stiffness of cement by emulsified asphalt, latex and cement, in addition to asphalt attached to the surface of waste asphalt concrete recycled aggregate. The semi-rigid product, which is a semi-rigid product, compensates for the weakness of the asphalt, which is a disadvantage of the cement, and the asphalt compensates for the poor driving performance of the cement, thereby satisfying both the increase of durability and the improvement of the runability.

In general cement concrete, since the ratio of compressive strength and bending strength is generally 1 / 6-1 / 7 and the bar of compressive strength and tensile strength is 1 / 9-1 / 11, the compressive strength of ordinary cement concrete is 200kg / The flexural strength is in the range of 33-28 kg / cm 2 and the tensile strength is in the range of 22-18 kg / cm 2 based on cm 2. On the contrary, the asphalt concrete of the present invention has excellent compressive strength and low tensile strength. That is, the ascon of the present invention has a ratio of compressive strength and flexural strength of 1 / 2-1 / 3 and a similar ratio between compressive strength and tensile strength, and thus, flexural strength and tensile strength based on a normal compressive strength of 80kg / cm 2. Are in the range of 40-26 kg / cm 2, respectively. In comparison with the present invention and the compressive strength, flexural strength and tensile strength of the cement concrete, the product of the present invention has a low compressive strength but high bending strength and tensile strength, in particular, the tensile strength is 40-26kg / ㎠ tensile strength of cement concrete It is much higher than phosphorus 22-18kg / ㎠. Compared with the asphalt mixture, general ascon has a normal compressive strength of 10kg / cm2 based on the ambient temperature of 20 ° C, whereas the product of the present invention has a compressive strength of 80kg / cm2, about eight times higher, and a test of asphalt concrete properties. The Marshall stability of the general ascon is 500-1000 kg, while the Marshall stability of the product of the present invention is more than three times higher than 3,000 kg, while the dynamic stability is 500-1,500 times / mm, whereas the product of the present invention has 20,000 times / mm. As it is, it is excellent compared to general ascon products.

Hereinafter, the configuration of the present invention will be described in more detail.

First process: A process for the waste ascone recycled aggregate to have a predetermined particle size distribution.

In the present invention, it is to ensure the desired predetermined (8-30%) pores of the waste ascone recycled aggregate as seen in the particle size distribution. Of course, the voids formed by the ascon of the present invention is not only controlled by the particle size distribution of the aggregate, but also affected by the cement usage, the water / cement ratio, and managing the particle size distribution of the aggregate of the recycled aggregate is also very important. Do.

Second process: adding and mixing emulsified asphalt and water-soluble latex.

In order to emulsify the asphalt adhering to the surface of the recycled ascone recycled aggregate, and to enhance the adhesion between the aggregates, emulsified asphalt and water-soluble latex are added and mixed. It is preferable to add 0.01-0.10 parts by weight of emulsified asphalt to 1 part by weight of recycled ascone recycled aggregate. If the amount of asphalt is less than 0.01 parts by weight, there is a problem that the asphalt attached to the surface of the recycled aggregate is not sufficiently emulsified. If the amount is more than 0.10 parts by weight, the amount of asphalt used is excessively high, which may adversely affect the product strength. And latex is used SBR, BR, NBR and the amount is preferably used in the range of 5-50% by weight of the emulsion asphalt. If the amount of latex is less than 5% by weight, there is no use effect, and more than 50% by weight of excessive latex may cause material waste. In mixing with the recycled aggregate, it is preferable to mix the mixture of emulsified asphalt and latex together with the recycled aggregate. In addition to SBR, BR, and NBR, use of water-soluble acrylic, EVA, epoxy, etc., has almost the same effect.

Third process: adding and mixing cement and water.

It is preferable to use 0.02-0.12 parts by weight of cement (1 to 20 parts by weight of cement based on 1000 kg of recycled asphalt concrete) for 1 part by weight of recycled aggregate. If it is 0.02 parts by weight or less, durability becomes weak, and if it is 0.12 parts by weight or more, it becomes too rigid and is different from the spirit of the present invention. The mixing sequence is preferably mixed with recycled aggregate, emulsified asphalt, and latex, and after confirming that they are evenly mixed, cement is added and mixed, and then water is preferably mixed. The reason for performing the mixing procedure in this way is that the degree of mixing varies depending on the performance of the mixing mixer.

Water is also added and mixed in this process, which should be used to a minimum to ensure workability and hydration with cement. Water for the hydration reaction with cement is the water / cement ratio theory is applied, the lower the water / cement ratio, the higher the strength, the higher the water / cement ratio, the lower the strength. Ascon of the present invention is porous, moisture is evaporated through the pores, which causes the water / cement ratio is falling, thereby increasing the strength, thereby maximizing the effect of using the cement. Therefore, in the present invention, the water / cement ratio is preferably determined such that the porosity is 8-30% and the slump value is 0-3 cm.

Ascon of the present invention produced by the above process can be used for the manufacture of road pavement and blocks, and also its application form is various, hereinafter the method for paving the road using the ascon of the present invention, and manufacturing the block How to do this is described.

First, a method of paving a road will be described.

In paving the road using the ascon of the present invention, the ascon produced by the process as described above may be transported to the site by a dump truck, laid in a conventional manner, and compacted by Laura.

In order to protect the surface of the road laid by the present invention, a surface protector may be sprayed on the upper part of the road surface, and the surface protectant is 0.5-2 parts by weight of cement and 0.5-2 parts by weight of silica sand of 2 mm or less in 1 part by weight of water. It can be prepared by mixing 0.1-1 part by weight of one part or two or more selected from parts by weight, asphalt emulsion, water-soluble latex, epoxy water-soluble acrylic, and EVA as a water-soluble resin. And when coloring is needed, what is necessary is just to mix and use a pigment within 20 weight% of the said cement usage amounts to the said surface protective agent.

In the case of permeability (porosity), the surface protector as described above should be sprayed immediately after laying and compacting the recycled aggregate ascon of the present invention. It is suitable to spray 50-300kg / m2 after the evaporation of moisture after 3 hours of laying and compacting recycled aggregate ascon.

On the other hand, when it is desired to make the surface of the road laid by the present invention beautiful, it is possible to lay another surface layer on top of the road surface placed.

At this time, as the surface layer laid on the top, (A) 1 part by weight of the general aggregate of 13 mm, 10 mm, 5 mm, 3 mm or 1.5 mm cement: 0.2-0.4 part by weight, water: 15-40 weight of the amount of cement used If necessary, the pigment is used within the range of 10% by weight of the amount of cement used. The water permeability is less than 10% by weight in the 0.5 mm sieve, and the impermeability is greater than 10% by weight in the 0.5 mm sieve. And mix it, install it on top of the ascon pavement and compact it with Laura, complete by installing and curing joints, or (B) laying and compacting colored natural stone aggregate of the same size in the surface forming material as above. , By spraying steam or water on top of it to complete the joint and curing, or (C) to express the natural stone as shown above, ocher, white soil, red soil, black soil, charcoal, etc. Use in the range of ~ 50% by weight It can be completed with eco-friendly surface. And when the heavy vehicle is expected to pass on the road to be installed and it is necessary to strengthen the compressive strength, (D) after laying and compacting the recycled aggregate ascon of the present invention, the coating is sprayed on the upper part, 1 day After the above process, general ascon, modified ascon, drainage ascon, color packaging, etc. may be laid and compacted to form a surface layer, and in the case of laying with elastic packaging, (E) reclaiming and compacting the recycled aggregate ascon of the present invention, After curing, in the surface air condition, urethane, epoxy, primer is spread, and the urethane binder 0.1-0.3 weight part to one or more parts selected from urethane chips, EPDM chips, crushed waste tire chips of 5 mm or less on top After mixing and laying the parts, the surface is finished with a trowel, a heating roller, etc., and the curing is completed.

The following describes a method for producing a block using the recycled aggregate ascon of the present invention.

In manufacturing a block using the recycled aggregate ascon of the present invention, as in the conventional block production, the ascon of the present invention may be placed in a mold to form a block by vibrating, pressing, and compacting, and then curing the block.

In the block manufacturing, the lower layer may be formed of the asphalt concrete of the present invention, and a separate upper layer may be formed thereon. In the case where the upper layer is formed separately, the recycled aggregate ascon of the present invention is first added to vibrate, pressurize or vibrate to form the lower layer, and on the upper part of silica sand 1 part by weight of cement: 0.2-0.5 part by weight, water: water 15-25% by weight of the amount of cement used, pigment: 10% by weight or less of the amount of cement used, if necessary, by mixing the secondary and vibration pressurized to form an upper layer.

At this time, the upper layer may be formed permeable or non-permeable. If you want to form permeable, the aggregate (silica) used for the upper layer may be used to pass 10 wt% or less in a 0.5 mm sieve. In the case of forming to be impermeable, a material that passes by at least 10% by weight in a 0.5 mm sieve may be used.

On the other hand, in the case of manufacturing the block in an environmentally friendly manner, in forming the upper layer, ocher, white clay, red clay, black soil, charcoal, and the like may be used as 10-50% by weight of the amount of cement used. In addition, in order to give a feeling of natural stone on the surface of the upper layer, natural stone gravel is used as aggregate, and the surface is sprayed with steam or water to protrude the natural stone by 30% or more of its surface area, and curing it. In addition, in the case of using the recycled aggregate ascon of the present invention as a lower layer, if the elastic layer consisting of the upper layer having elasticity and the regenerated aggregate of the present invention and the lower layer having no elasticity are intended to be used, (1) (2) 0.1-0.3 parts by weight of a urethane binder is mixed with 1 part by weight of an elastomeric chip such as urethane chips, EPDM chips or crushed waste tire chips of 10 mm or less in a separate mold as an upper layer. (3) After spraying the urethane primer on one side of the lower layer block, which had been cured before, and (4) the surface on which the urethane primer of the lower layer block was sprayed on the mold containing the upper layer block. The urethane primer of the lower layer block and the urethane binder of the upper layer block are brought into contact with each other, and then (5) vibrated and pressurized. , The surface and heating the molding block in this way (6) to the natural curing or below 50 ℃.

In the manufacture of the block, it is also possible to form a pattern of various shapes on the upper portion of the block by using the platen formed with unevenness, it is also possible to produce a block with a blind braille, a block having slip resistance and the like. The block of this kind is formed of two layers (the upper layer having a pattern, the lower layer using the recycled aggregate of the present invention), as in the above-mentioned elastic block, the process of manufacture and the material used are Is the same as It is only distinguished by whether or not the braille or the pattern is engraved on the surface.

As seen above, the recycled aggregate ascon of the present invention has a wide range of applications, and in particular, the present invention can be applied to almost all kinds of blocks, such as sidewalk blocks, shore banks, vegetation blocks, boundary blocks in the manufacture of blocks.

Hereinafter, the present invention will be described based on examples.

(Example 1)

In this embodiment, the length 100m. In paving a road having a width of 4 m and a paving thickness of 7 cm, 19 mm waste ascone recycled aggregate was used, and the surface was colored red. As the equipment used in the present example, the asconia for ascon laying, as well as macadam roller, tire roller and tandem roller for compaction were prepared.

The particle size distribution of waste ascone recycled aggregate used in this example passes 100% in a 25 mm sieve, 90-100% in a 19 mm sieve, 5-60% in a 5 mm sieve, and 0 in a 1.2 mm sieve. -20% pass through, 0-10% pass through the 0.6 mm sieve, and 0-5% pass through the 0.3 mm sieve. This example was carried out by the following process.

First step: 1,000 kg of waste ascone recycled aggregate, 15 kg of emulsified asphalt, and 3 kg of SBR latex were mixed, and 50 kg of water was added and mixed with 70 kg of cement.

Second process: The mixture of the above process was transported to the site, installed in the asphalt for asphalt, and compacted three times round-trip to Macadam.

3rd step: As a surface spraying material, 200 kg of cement, 100 kg of silica sand or less 100 kg, 100 kg of water-soluble epoxy, 350 kg of water, 15 kg of pigment (red) were mixed and sprayed immediately after laying and compacting in the electric process. The mixture was sprayed onto the surface of the package at a rate of 40 kg / 100 m 2, and compacted five times with tire rollers and three times with tandem rollers. After confirming that the surface was sufficiently dried, the vehicle was opened after curing for 24 hours.

The porosity, stability, dynamic stability, compressive strength, flexural strength, and tensile strength of the roads laid by this example were tested. The test results are shown in Table 2 below.

Table 2: Test result of Example 1

Test Item (Unit) Test result standard Porosity (%) 12.5 8-30 Stability (kg) 3820 More than 500 Dynamic Stability (times / mm) 18,500 More than 4,000 Compressive strength (㎏ / ㎠) 82.8 - Flexural strength (㎏ / ㎠) 34.0 - Tensile Strength (㎏ / ㎠) 29.7 -

As shown in the test results of Table 2 above, the porosity, stability and dynamic stability of the pavement paved by this embodiment were all above the standard, and the compressive strength was slightly higher than 80㎏ / ㎠, which was suitable for semi-rigid road pavement, and flexural strength. The tensile strength is much higher than that of general cement concrete.

(Example 2)

In this embodiment, a high-pressure block of 230 mm in length x 115 mm in width x 60 mm in thickness was prepared from ascon using recycled asphalt concrete. The particle size distribution of the waste ascon recycled aggregate used in this example is shown in Table 3.

Table 3: Particle Size Distribution of Waste Ascon Aggregates

Checker (mm) Sieve weight percentage (%) 19 13 5 2.5 1.2 0.6 0.5 0.3 standard 100 80-100 10-60 5-40 0-30 0-15 0-10 0-10 Test result 100 100 40.5 15.2 3.4 1.2 1.0 0.5

This example was carried out by the following process.

First step: 1,000 kg of waste asphalt recycled aggregate having a particle size distribution of Table 4, 20 kg of emulsion asphalt (RSC-4), 2 kg of SBR latex (40% solids), 68 kg of cement, and 18 kg of water were mixed.

Second step: The mixture of the above step was put into a predetermined mold, vibrated and pressed to form a thickness of 60 cm, and then the mold was removed.

Third step: The block formed in the electrical process was moved to a curing room to cure for 10 hours to complete the block.

The stability, flexural strength, tensile strength and porosity of the blocks manufactured according to the present example were measured. The measurement results are shown in Table 4 below.

Table 4: Test result of Example 2

Item Stability (kg) Flexural strength (kg / ㎡) Tensile Strength (kg / ㎠) Porosity (%) Measurement 3500 38 32 8.8 standard More than 500 35 or more - 8 or more

As shown in the test results of Table 4, the stability, bending strength and porosity of the block of Example 2 prepared by applying the present invention was above the standard, the tensile strength was also very good.

(Example 3)

In the present embodiment, a block having a permeability of 1 × 10 ⁻² cm / sec or more and a porosity of 12% or more and having a size of 230 mm × 135 mm × 80 mm and a color of red is decided. And the block of the present embodiment is to form a lower layer of ascon using the recycled aggregate asphalt ascon, and the upper layer was to produce a block formed of cement concrete using silica sand. The particle size distribution of the waste ascon recycled aggregate used in this example is shown in Table 5.

Table 5: Particle Size Distribution of Waste Ascon Recycled Aggregate

   Checker (mm) Sieve weight percentage (%) 13 8 5 2.5 1.2 0.6 0.5 0.3 standard 100 80-100 30-80 10-60 5-35 0-15 0-10 0-10 Test result 100 100 55.0 42.1 18.4 6.5 4.2 3.2

This example was carried out by the following process.

First step: 1,000 kg of waste asphalt recycled aggregate having a particle size distribution of Table 5, 20 kg of emulsion asphalt (RSC-4), 3 kg of SBR latex (40% solids), 75 kg of cement, and 22 kg of water were mixed.

Second step: The mixture of the above step was put in a predetermined mold to vibrate and pressurized to have a thickness of 60 mm.

Third step: 400 kg of cement, 60 kg of water, and 14 kg of pigment (red) were mixed with 1800 kg of silica sand passing 100% through a 5 mm sieve and 2.0% through a 0.5 mm sieve.

4th process: The mixture of the above process was put into the upper part of the molded object of the 2nd process frame for 2nd time, and it vibrated and pressurized so that the total thickness might be 80 mm.

Step 5: After removing the mold, transfer to curing room and dry by curing at 25 ℃ of ambient temperature.The red permeable block is used as the lower layer of ascon of recycled aggregate of asbestos, and the upper layer of cement concrete using silica sand as aggregate. Completed.

The blocks manufactured according to the present embodiment were tested for stability, bending strength, tensile strength, porosity, and permeability coefficient. The test results are shown in Table 6 below.

Table 6: Test results of Example 3

Item Stability (kg) Flexural strength (㎏ / ㎠) Tensile Strength (㎏ / ㎠) Porosity (%) Permeability coefficient (cm / sec) Test result 3270 45 32 16.5 5.2 × 10 ^-2 standard More than 500 35 or more - 12% or more 1 × 10 ^-2 or more

As shown in the test results of Table 6, the stability, bending strength, porosity, and permeability coefficient of the example block to which the present invention was applied were above the standard, and the tensile strength was also very good.

The present invention is to enable the production of ascon using recycled ascon recycled aggregate by the normal temperature mixing method, to allow curing of the ascon within 48 hours, and to improve the durability of the package or manufactured block laid by the ascon. At the same time, the flexibility of the asphalt and the stiffness of the cement are properly combined to make the intermediate properties semi-rigid.

The present invention can be applied to a variety of applications, to secure the aesthetics of the surface in the manufacture of blocks, may be used environmentally friendly, may be formed of an elastic body, braille block, anti-slip block, revetment block It can be applied to reinforcement earth block. Therefore, the present invention is to be very advantageous to provide a variety of ways that can be recycled recycled waste asphalt concrete.

Claims (20)

In classifying aggregates by crushing waste ascon, the maximum size of the aggregates passes through 100% in a 40 mm sieve, 80-100% in a 25 mm sieve, and 5-60% in a 5 mm sieve when the maximum size of the aggregate is 25 mm. Classify aggregates with a particle size distribution that passes, passes 0-20% in a 1.2 mm sieve, passes 0-10% in a 0.6 mm sieve, and passes 0-5% in a 0.3 mm sieve, and the maximum size of the aggregate is 19 In the case of mm, 100% passes through a 25mm sieve, 80-100% passes through a 19mm sieve, 5-60% passes through a 5mm sieve, 0-20% passes through a 1.2mm sieve, Classify aggregates with a particle size distribution that passes 0-10% and passes 0-5% in a 0.3 mm sieve. When the aggregate maximum size is 13 mm, 100% passes in a 19 mm sieve and 80- in a 13 mm sieve. 100% pass through, 10-60% pass through 5mm sieve, 5-40% pass through 2.5mm sieve, 0-30% pass through 1.2mm sieve, 0-15% pass through 0.6mm sieve, 0.3 Particle size passing 0-10% in mm sieve Classify aggregate in the distribution, and when the aggregate maximum size is 8 mm, 100% passes in a 13 mm sieve, 80-100% passes in an 8 mm sieve, 30-80% passes in a 5 mm sieve, 2.5 mm Classify the aggregate of particle size distribution passing 10-60% in the sieve, 5-35% in the 1.2 mm sieve, 0-15% in the 0.6 mm sieve, and 0-10% in the 0.3 mm sieve, When the maximum size of the aggregate is 5 mm, 100% passes through a 10 mm sieve, 80-100% passes through a 5 mm sieve, 5-60% passes through a 2.5 mm sieve, and 0-30% passes through a 1.2 mm sieve. Classifying the aggregate of the particle size distribution passing 0-15% in a 0.6 mm sieve and 0-10% in a 0.3 mm sieve; Mixing 1 part by weight of the aggregate classified by the above step with 0.01-0.10 parts by weight of emulsion emulsion and latex corresponding to 5-50% by weight of the amount of asphalt used; Mixing the mixture of the above process with 0.02-0.12 parts by weight of cement and water with respect to 1 part by weight of the aggregate to produce ascon having a porosity of 8-30% and a slump value of 0-3 cm; And Ascon road paving method using the recycled ascon recycled aggregate comprising a; step of laying the ascon produced in the electrical process in a conventional manner and compacting with Laura. The method according to claim 1, for the surface protection, after laying and compacting the ascon, emulsified as 0.5-2 parts by weight of cement, 0.5-2 parts by weight of silica sand of 2 mm or less, water-soluble resin on 1 part by weight of water Ascon road packaging method using waste ascone recycled aggregate, comprising the step of spraying 10-300kg / ㎡ a surface protective agent mixed with one or two or more 0.1-1 parts selected from asphalt, water-soluble latex, epoxy water-soluble acrylic, EVA. The method for paving asphalt roads using waste ascone recycled aggregates according to claim 2, wherein a pigment is mixed with the surface protective agent within 20% by weight of the amount of the cement used. The method for paving asphalt roads using waste ascon recycled aggregates according to claim 2 or 3, wherein in the case of water permeability, 10-50 kg / m2 of the surface protective agent is sprayed before the water evaporates after the asphalt concrete is laid and compacted. The waste ascone recycled aggregate according to claim 2 or 3, wherein in the case of water impermeability, 50-300 kg / m 2 spraying of the surface protective agent is carried out after evaporation of water after 3 hours or more after laying and compacting the ascon. Ascon road paving method. According to claim 1, After placing and compacting the asphalt concrete, 0.1-0.3 parts by weight of a urethane binder is mixed with one or more selected from the group consisting of urethane primer, urethane chip, EPDM chip, waste tire, Ascon road paving method using waste ascone recycled aggregates, which surface is cured, cured and finished in a conventional manner. The mixture according to claim 1, wherein 1 to 13 parts by weight of general aggregates of 13 mm, 10 mm, 5 mm, 3 mm or 1.5 mm is mixed with cement: 0.2-0.4 parts by weight and water: 15-40% by weight of the amount of cement used. Ascon road paving method using waste ascon recycled aggregate, which is laid on the top of the surface layer and compacted with Laura in the usual way, and the joint is installed and cured to form the top layer. According to claim 7, In the case of permeability, the general aggregate is to pass at less than 10% by weight in a 0.5mm sieve, Ascon road paving method using waste ascone recycled aggregate. The method of claim 7, wherein the general aggregate is a colored natural stone aggregate, and after the installation and compaction of the top layer, by spraying steam or water on the top layer to protrude the natural stone, asphalt concrete paving method using ascon recycled aggregate. The method for paving asphalt roads using waste ascone recycled aggregates according to claim 7, wherein loess, white clay, red clay, black clay or charcoal is used in the range of 10-50% by weight of the top cement usage. The method according to claim 1 or 2, wherein, in order to strengthen the surface, the coating is applied to the upper portion, and thereafter, one selected from ordinary ascone, modified ascone, drainable ascone, and colored ascone is formed to form a surface layer. Ascon road paving method using waste ascon recycled aggregate. In classifying aggregates by crushing waste ascon, the maximum size of the aggregates passes through 100% in a 40 mm sieve, 80-100% in a 25 mm sieve, and 5-60% in a 5 mm sieve when the maximum size of the aggregate is 25 mm. Classify aggregates with a particle size distribution that passes, passes 0-20% in a 1.2 mm sieve, passes 0-10% in a 0.6 mm sieve, and passes 0-5% in a 0.3 mm sieve, and the maximum size of the aggregate is 19 In the case of mm, 100% passes through a 25mm sieve, 80-100% passes through a 19mm sieve, 5-60% passes through a 5mm sieve, 0-20% passes through a 1.2mm sieve, Classify aggregates with a particle size distribution that passes 0-10% and passes 0-5% in a 0.3 mm sieve. When the aggregate maximum size is 13 mm, 100% passes in a 19 mm sieve and 80- in a 13 mm sieve. 100% pass through, 10-60% pass through 5mm sieve, 5-40% pass through 2.5mm sieve, 0-30% pass through 1.2mm sieve, 0-15% pass through 0.6mm sieve, 0.3 Mouth passing 0-10% in mm sieve Classify aggregate in the distribution, and when the aggregate maximum size is 8 mm, 100% passes in a 13 mm sieve, 80-100% passes in an 8 mm sieve, 30-80% passes in a 5 mm sieve, 2.5 mm Classify the aggregate of particle size distribution passing 10-60% in the sieve, 5-35% in the 1.2 mm sieve, 0-15% in the 0.6 mm sieve, and 0-10% in the 0.3 mm sieve, When the maximum size of the aggregate is 5 mm, 100% passes through a 10 mm sieve, 80-100% passes through a 5 mm sieve, 5-60% passes through a 2.5 mm sieve, and 0-30% passes through a 1.2 mm sieve. Classifying the aggregate of the particle size distribution passing 0-15% in a 0.6 mm sieve and 0-10% in a 0.3 mm sieve; Mixing 1 part by weight of the aggregate classified by the above step with 0.01-0.10 parts by weight of emulsion emulsion and latex corresponding to 5-50% by weight of the amount of asphalt used; Mixing the mixture of the above process with 0.02-0.12 parts by weight of cement and water with respect to 1 part by weight of the aggregate to produce ascon having a porosity of 8-30% and a slump value of 0-3 cm; And The method for producing a block using recycled ascon recycled aggregate comprising a; assembling the ascon produced in the electrical process into a mold in a conventional manner, vibrating, pressurizing, compacting and then curing the block. The method as set forth in claim 12, wherein a lower layer is formed of the asphalt concrete, and a second aggregate is mixed with 1-25 parts by weight of cement: 0.2-0.5 parts by weight and 15-25% by weight of water: water cement. Block production method using waste ascone recycled aggregate, which is pressed to form an upper layer. The method for producing a block using recycled asphalt mixed aggregate according to claim 13, wherein a pigment is used in the mixture of the upper layer at 10 wt% or less of the amount of cement used. 15. The method of claim 13, wherein, in the case of water permeability, the general aggregate passes at less than 10% in a 0.5 mm sieve. The method of claim 13, wherein the mixture of the upper layer, ocher, white clay, red clay, black clay or charcoal is used at 10-50% by weight of the amount of cement used. The method of claim 13, wherein the general aggregate is a colored natural stone aggregate, and after the vibration and pressurization of the upper layer to spray natural steam by spraying steam or water thereon, a block manufacturing method using recycled ascone aggregate. 14. The urethane chip, EPDM chip, or pulverization according to claim 13, wherein (1) a block formed by using the ascon as the lower layer is separated from the mold and cured. After mixing 0.1-0.3 parts by weight of a urethane binder to 1 part of waste tire chips to clean up the surface, (3) after spraying a urethane primer on one surface of the lower layer block cured before, (4) the upper layer block is The urethane primer of the lower layer block is placed face down on the mold, and the urethane primer of the lower layer block and the urethane binder of the upper layer are brought into contact with each other. A method for producing a block using waste ascon recycled aggregate comprising the step of curing the molded block in this manner in a conventional manner. 19. The method of claim 18, wherein a blind braille pattern or a slip resistant pattern is formed on a surface of the upper layer. The method for producing a block according to claim 12 or 13, wherein the produced block is one of a sidewalk block, a raft block, a vegetation block, a boundary block, and a reinforced earth block.