KR101689520B1 - Fiber reinforced recycled ascon and method thereof - Google Patents

Abstract

The present invention relates to a fiber-reinforced room temperature recycled ascon and a production method thereof and, more specifically, to a fiber-reinforced room temperature recycled ascon, which is an asphalt mixture which can improve plastic deformation resistance ability, crack resistance ability and porthole resistance ability generated in coated package by a vehicle load and moisture penetration, and a production method thereof. The fiber-reinforced room temperature recycled ascon comprises: an aggregate consisting of a recycled aggregate obtained from waste ascon; 3.5 to 4.4 wt% of emulsified asphalt of the aggregate mixed with straight asphalt, an emulsifier, and water; 4.8 to 7.0 wt% of a cement-free filler without cement; and 0.08 to 0.15 wt% of a fibrous material of the aggregate in a chop form having the length of 5 to 30 mm.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber-

The present invention relates to a fiber-reinforced normal-temperature regenerated asphalt and a method for producing the same, and more particularly, to a fiber reinforced normal-temperature regenerated asphalt having improved plasticity, cracking and port holes generated on the road surface by vehicle load and moisture penetration while improving adhesion and tensile force between aggregates. To a fiber-reinforced room-temperature regenerated asphalt having improved resistance to heat and to a method for producing the same.

Generally, asphalt mixture for road pavement is produced by heating and mixing aggregate, asphalt, filler (limestone, etc.). However, the process of manufacturing the asphalt mixture for road pavement entails a process of heating the aggregate and the asphalt, and the pollution problem is caused by discharging the harmful gas in the heating process.

Also, asphalt mixture for road pavement has plastic deformation, cracks, and portholes every 5 to 10 years after construction, which hinders the safety of road users and lowers the structural stability of roads. As a result, damaged parts for road pavement are removed or cut at intervals of 5 to 10 years, and maintenance work such as overlaying, sofa repairing, filling of portholes, etc. is performed. Such road maintenance is increasing year by year, and the amount of waste asbestos generated during the maintenance process is rapidly increasing.

Although attempts to recycle collected asbestos have been made, rather than to dispose of it, there is a low use rate due to the low durability of the asphalt mixture for road paving. More specifically, the room temperature asphalt mixture is prepared by mixing emulsified asphalt with aggregate or waste asbestos recycled aggregate. Emulsified asphalt has a lower durability when used for pavement because of lack of adhesion of aggregate as compared with heated asphalt. The occurrence of the aggregate desorption phenomenon becomes high.

Therefore, in order to improve the durability of the asphalt mixture at room temperature, a technique for improving the quality of the asphalt mixture at room temperature by adding cement, fiber, etc. to the mixture of aggregate and emulsified asphalt has been proposed.

However, when cement is mixed, the asphalt mixture at room temperature has a high durability but lacks ductility, resulting in frequent occurrence of cracks and aggregate desorption, and the cement is fed to a mixer installed at a height of about 5 m from the ground The cement in powder form is scattered during the charging process, so that it is difficult to formulate the mixture in a quantitative manner, which makes it difficult to produce a room temperature asphalt mixture in a uniform mixture.

In addition, in the case of adding fibers, the tensile strength of the recycled asbestos mixture at room temperature is increased by increasing the bonding force between the aggregates, but there is a problem that the effect of increasing the tensile strength due to the fibers is not developed due to the aggregation of the fibers during the manufacturing process .

Therefore, it is urgently required to produce a fiber-reinforced normal temperature regenerated asphalt mixture for the base layer, the intermediate layer and the surface layer of the road without heating the raw materials.

DISCLOSURE OF THE INVENTION In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide an asphalt- (Or an asphalt mixture at room temperature) and a process for producing the same.

That is, the object of the present invention is to protect the environment by preparing an asphalt mixture at room temperature by using recycled aggregate using waste ascon in manufacturing an asphalt mixture.

It is another object of the present invention to produce an asphalt mixture in an environmentally friendly manner by eliminating the heating process.

It is another object of the present invention to maintain consistent quality and improve durability by always producing the asphalt mixture in a non-heated manner using a waste ascon, at a uniform mixing ratio.

Further, the present invention aims at solving the phenomenon that the fibers added to the asphalt mixture accumulate in the course of the injection.

The present invention also aims to improve durability and crack resistance of an asphalt mixture without adding cement.

It is another object of the present invention to solve the problem that asphalt asphalt is unevenly mixed when waste asphalt recycled aggregate, fiber, and filler are added to asphalt.

Accordingly, it is an object of the present invention to provide an asphalt mixture with improved plastic deformation resistance capability, crack resistance capability, and porthole resistance capability, and a process for environmentally-friendly production thereof.

SUMMARY OF THE INVENTION The present invention has been achieved in order to achieve the above object, and an object of the present invention is to provide an aggregate comprising recycled aggregate obtained from waste asbestos; 3.5 wt% to 4.4 wt% of emulsified asphalt of the aggregate mixed with straight asphalt, emulsifier, and water; 4.8 to 7.0% by weight of the aggregate, not containing cement; 0.08% to 0.15% by weight of the aggregate in a chop form having a length of 5 mm to 30 mm; To provide a mixed fiber-reinforced room temperature regenerated ascon.

As described above, the fiber reinforced binder composed of the emulsified asphalt, cement filler and fiber material is mixed with the waste asbestos recycled aggregate at the above mixing ratios, so that the plastic deformation resistance ability and the crack generated in the application package by the vehicle load and moisture penetration Resistance ability, and porthole resistance ability can be further improved.

In addition, since the asphalt mixture is formed by using the cement-free cement-free filler without adding the cement, the conventional problem that the softness is insufficient and is vulnerable to cracking and the aggregate desorption phenomenon is frequently caused can be solved.

In addition, the fiber material charged in an amount of 0.08 wt% to 0.15 wt% or less with respect to the weight of the aggregate is fed in a short length of 5 mm to 30 mm so that the fibers are bundled from one side to the other in the course of mixing the aggregate with the emulsified asphalt, It is possible to obtain an advantage that the phenomenon can be suppressed.

Here, all of the above aggregates may be collected from aggregate layers used for road pavement, but they may include some new new aggregates in order to meet the criteria of aggregate particle size according to KS I 3022 regulation.

Wherein the emulsified asphalt has a penetration of 60 to 100 and comprises 52 wt% to 56 wt% straight asphalt, 41 wt% to 45 wt% water, 0.5 wt% to 1.5 wt% emulsifier, 0.3 wt% 0.7 wt% of potassium hydroxide (KOH), and 0.5 wt% to 1.5 wt% of calcium chloride. Thus, it is possible to cure at a room temperature within a short time of 12 hours, thereby realizing more rapid pavement construction.

In this case, the emulsified asphalt has an Engler viscosity of 3 to 40 at 25 ° C., a sieve residue (1.18 mm) has a mass ratio (%) of 0.3 or less, a storage stability for 24 hours is 1 or less in mass ratio, (wt%) 50 or more, the penetration degree of the evaporation residue is 60-200 at 25 ° C (1/10 mm), the elongation is 40 cm or more at 15 ° C, the toluene soluble content is 97% ° C for at least 1,200 seconds, the mixture with the aggregate and the fiber material is smoothly carried out at room temperature.

The emulsifier may be at least one selected from the group consisting of carboxylate, dodecylbenzenesulfonate, alkylarylsulfonate, fatty acid alkali metal salts, alkylbenzenesulfonates, alpha-olefin sulfonates, sodium alkylarylsulfonates, alkyl phosphates, 2-polyoxy-ethylene-3-ammonium-sulfate, sodium dioctylsulfosuccinate, sodium dodecyl sulfate, polysorbate 80.

On the other hand, the cement filler without cement does not contain cement, so that when the cement is mixed, the problem of cracking due to lack of ductility and the problem of the aggregate desorption phenomenon can be solved. For this purpose, the cesium feldspathic material comprises 40 to 50% by weight of desulfurized gypsum, 7.5 to 12% by weight of anhydrous gypsum, 41 to 49% by weight of steelmaking slag powder, 1.5 to 2.5% By weight of lithium carbonate.

The cementitious filler thus formed had a water content of 1% or less, a particle size of 0.6 mm, a permeability of 100%, a permeability of 0.5 mm or more, a permeability of 0.15 mm or more, a permeability of 0.08 mm or more % Or more of powder, and when the mixture is mixed with the aggregate and the fiber material, the quantitative mixing is uniform.

Although the fiber material can be determined by various materials, it is effective to greatly increase the bonding force between the aggregates by being made of polyethyleneterephthalate fiber.

According to another aspect of the present invention, there is provided a method of manufacturing an asphalt pavement, comprising the steps of: injecting an aggregate containing recycled aggregate obtained from waste asbestos into a mixer; A step of injecting fibers and a filler material into the mixture mixer while finely cutting the continuous fibers into a chop-shaped fiber material having a size of 5 mm to 30 mm using a rotary cutter; A primary mixing step of mixing the aggregate, the fibrous material and the cement based filler in the mixing mixer for a first time; An emulsified asphalt admixture step of feeding 3.8 wt% to 4.2 wt% of the asphalt mixed with straight asphalt, emulsifier, and water into the mixer; A second mixing step of mixing the aggregate, the fibrous material, the cement fills and the emulsified asphalt in the mixing mixer for a second time; The present invention also provides a method of manufacturing a fiber-reinforced normal temperature ascon.

The fibrous material and the cement material filler are simultaneously introduced into the mixing mixer so that the fibrous material and the cement material filler are introduced into the mixing mixer while being mixed with each other so that the aggregate material, Can be more uniformly mixed even at room temperature.

Particularly, in order to solve the conventional problem that the asphalt mixture becomes inhomogeneous due to the lump of the thin fibrous material of 5 탆 to 20 탆 by supplying the fiber material of the chopped type in which continuous fibers are finely chopped into 5 to 30 mm using a rotary cutter So that a homogeneous asphalt mixture can be obtained by mixing the fibers uniformly and evenly.

Herein, at least one of the step of injecting the fibers and the filler material and the step of injecting the emulsified asphalt is put into the mixing mixer at a pressure higher than the atmospheric pressure by a pressure of 0.5 bar to 1.0 bar to uniformly mix the fibrous material and the cemented filler The mixing can be further increased.

In the step of injecting the fiber and the filler, the cyanide filler is mixed with water and then introduced into the mixer to solve the scattering problem generated in the filling process of the cyanide filler. In the first mixing step, It is advantageous to uniformly flow into the aggregate and realize an even mixing state. The cementless filler has a water content of 1% or less and a particle size of 0.6 mm, a permeability of not less than 95%, a permeability of not more than 90% of 0.15 mm, a permeability of not more than 0.08 mm And is adjusted to a powder size satisfying 70% or more. As a result, the cementitious filler in a fine powder state penetrates smoothly between the aggregates and contributes to realizing a uniform mixing state.

In the step of injecting the fiber and the filler, the fiber material is injected into the mixer in the form of a chop finely chopped to 5 mm to 30 mm so that when the mixture is mixed with the aggregate, a homogeneous asphalt mixture is dispersed Can be obtained.

The first time is set to be shorter than the second time, which is about 45 seconds, which is about 15 seconds.

Meanwhile, in the step of injecting the emulsified asphalt, the emulsified asphalt as much as 3.8 wt% to 4.2 wt% of the aggregate is put into the mixing mixer. If the content of emulsified asphalt exceeds 4.2 wt% of the aggregate, it is undesirable because it exceeds 80% of the upper limit of the saturation degree. If the content of emulsified asphalt is less than 3.8 wt% of the aggregate, the tendency of stability is undesirably reduced.

In addition, in the step of injecting the fiber and the filler, the cobalt filler as much as 4.8 wt% to 7.0 wt% of the aggregate and the fiber as much as 0.08 wt% to 0.15 wt% of the aggregate are put into the mixer. If the content of the cement filler exceeds 7.0% by weight of the aggregate weight, the lower limit of porosity is less than 3%. If the content of cesium is less than 4.8% by weight, the indirect tensile strength is lowered to 0.25 MPa or less .

When the content of the fibrous material is 0.08% by weight or more, the indirect tensile strength can be increased as the content of the fibrous material is increased while maintaining the composition ratio as described above. However, when the fibrous material content is 0.08% by weight or more relative to the weight of the aggregate, It is preferable to keep it at 0.08 wt% or more. Further, since the volume per unit weight of the fibrous material is relatively smaller than that of the aggregate, it is preferable that the content of the fibrous material does not exceed 0.15% by weight of the aggregate. Even if the content of the fibrous material exceeds 0.15% by weight of the aggregate, the effect of suppressing the binding force between the aggregates and the aggregate desorption phenomenon is no longer increased.

Meanwhile, the emulsified asphalt has a penetration of 60 to 100, 52 to 56 wt% of straight asphalt, 41 to 45 wt% of water, 0.5 to 1.5 wt% of emulsifier, 0.3 wt % To 0.7% by weight of potassium hydroxide (KOH), and 0.5% to 1.5% by weight of calcium chloride.

The thus-prepared emulsified asphalt has an Engler viscosity of 3 to 40 at 25 ° C, a sieve residue (1.18 mm) having a mass ratio (%) of 0.3 or less, a 24-hour storage stability of not more than 1 mass ratio, (1/10 mm) of 60-200 at 25 ° C, an elongation of 40 cm or more at 15 ° C, a toluene soluble content of 97% or more, and a float retention time Satisfies the condition of at least 1,200 seconds at 60 占 폚.

According to another aspect of the present invention, there is provided a method of manufacturing a fiber-reinforced thermosetting resin composition, comprising: a step of transporting the fiber-reinforced thermosetting resin produced as described above to a packaging site; A compaction step in which the installed room temperature asbestos mixture is made to have a porosity of 6 to 15%; A crack inhibitor spraying step of spraying a crack inhibitor on the upper surface of the packed surface of the ascon mixture at room temperature; A packaging surface curing step to cure the packaging surface; Thereby providing a road pavement method.

As described above, by packing the road using the above-mentioned fiber-reinforced room temperature ascon, it is possible to construct the road surface with improved plastic deformation resistance, crack resistance and porthole resistance.

The 'cationic fast curing type emulsified asphalt' described in the present specification and claims includes cationic RS (C) -4 of the standard defined in KS M2203 (where RS is Rapid Setting, C is Cationic )).

INDUSTRIAL APPLICABILITY As described above, the present invention relates to an aggregate comprising recycled aggregate obtained from waste asbestos; 3.5 wt% to 4.4 wt% of emulsified asphalt of the aggregate mixed with straight asphalt, emulsifier, and water; 4.8 to 7.0% by weight of the aggregate, not containing cement; 0.0 >% < / RTI > to 1% by weight of the fibrous material of the aggregate and formed in a chop shape having a length of 5 mm to 30 mm; Fiber reinforcement which is composed of 0.01% to 5% of the recycled aggregate and is an asphalt mixture which can improve the plastic deformation resistance ability, cracking resistance ability and porthole resistance ability generated in the coating package by vehicle load and moisture penetration A room temperature ascon and a method for producing the same.

Accordingly, it is possible to provide an asphalt mixture which is capable of realizing high durability and which is susceptible to cracking and which suppresses the aggregate desorption phenomenon even when low-ductility cement is not added.

In addition, the present invention is characterized in that, instead of mixing the fibrous material in a preliminarily cut state, the continuous fibrous material is cut into a chopped form of 5 mm to 30 mm by a rotary cutter immediately before putting the fibrous material into the mixer mixer, Since the fibrous material is uniformly mixed evenly and uniform resistance is exhibited, it is possible to prevent the occurrence of cracks when used in road pavement Can be suppressed to a large extent as compared with the prior art.

In addition, the present invention can obtain the advantage that the recycled aggregate obtained from waste asbestos is used and the heating is excluded, environmental pollutants are reduced, and an asphalt mixture is obtained in an environmentally friendly manner.

In addition, the present invention can obtain the effect of securing a constant quality by uniformly mixing waste asbestos recycled aggregate, fiber, filler and emulsified asphalt.

Accordingly, the present invention has an effect of obtaining an asphalt mixture having improved plastic deformation resistance capability, crack resistance capability, and porthole resistance capability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a method of manufacturing a fiber-reinforced normal-temperature regenerated asbestos according to an embodiment of the present invention,
Fig. 2 shows the experimental results of the stability and degree of saturation of the asphalt mixture according to the content of emulsified asphalt.
FIG. 3 is a graph showing an indirect tensile strength of the asphalt emulsion according to the content of straight asphalt,
FIG. 4 is a graph showing the porosity and the indirect tensile strength of the asphalt mixture according to the content of cyanide filler,
FIG. 5 shows experimental results of the porosity and indirect tensile strength of the asphalt mixture according to the content of the fibrous material.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fiber-reinforced normal-temperature regenerated asphalt according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

The fiber-reinforced normal-temperature recycled asbestos according to the present invention can be used as a regenerated asphalt mixture for a base layer, an intermediate layer, and a surface layer of a road without heating aggregates and the like, and includes aggregates comprising recycled aggregates obtained from waste asbestos; 3.8 wt% to 4.2 wt% of the asphalt mixture mixed with straight asphalt, emulsifier, and water, and the aggregate; 4.8 to 7.0% by weight of the aggregate, not containing cement; 0.0 >% < / RTI > by weight to 1% by weight of the aggregate and formed into a chop shape having a length of 5 to 30 mm; And is composed of 0.01% to 5% of impurities of the aggregate.

The aggregate may be selected from recycled aggregates obtained from waste asbestos within the range satisfying the granularity criteria of the base layer or the surface layer aggregate according to KS I 3022, and the granular aggregate according to KS I 3022 may be selected from the recycled aggregate obtained from the waste asbestos If unsatisfied, it may contain at least some of the new aggregates.

The emulsified asphalt is composed of straight asphalt and water and is supplied and mixed in an amount of 3.8 wt% to 4.2 wt% with respect to the weight of the aggregate to form a binding force between the aggregates. As shown in FIG. 2, the stability and degree of saturation vary depending on the content of emulsified asphalt, and the saturation degree of the asphalt mixture must be within the range of 60% to 80%. Therefore, the saturation degree increases as the content of emulsified asphalt increases, but the content of emulsified asphalt can not exceed 4.4% by weight relative to the weight of the aggregate in order to maintain the degree of saturation below 80. The stability of the asphalt mixture according to the content of emulsified asphalt has a tendency of upward convex quadratic function. As shown in the experimental result of FIG. 2, the optimum value of the stability of the asphalt mixture is 4.0 wt%. Therefore, in order to maintain the saturation degree within the allowable range of 60% to 80%, the content of emulsified asphalt should be in the range of 3.5% by weight to 4.4% by weight relative to the weight of the aggregate, 4.2 wt.% (4.0 wt.% Is the best).

The emulsified asphalt is preferably a rapid curing type cured at a sufficient strength after 12 hours from the application, and RS (C) -4 (cationic fast curing type emulsified asphalt) defined in KS M2203 may be used. The emulsified asphalt contains from 52% by weight to 56% by weight of straight asphalt having an intrusion degree of 60 to 80 or 80 to 100, 41 to 45% by weight of water, and an emulsifier of 0.5 to 1.5% By weight, potassium hydroxide (KOH) is contained by 0.3% by weight to 0.7% by weight, and calcium chloride (CaCl ₂ ) is contained by 0.5% by weight to 1.5% by weight.

As the content of straight asphalt constituting the emulsified asphalt increases, the indirect tensile strength can be increased. However, when the content of the asphalt is higher than 56 wt% of the total content, the water content of the asphalt particles for emulsification is reduced. Since it is not uniformly distributed, it is preferable that the content of the straight asphalt is maintained at 52 to 56% by weight of the entire emulsified asphalt.

If the content of potassium hydroxide added to the emulsified asphalt is less than 0.3 wt%, the pH value of the emulsified asphalt becomes less than 6.0, which is undesirable. When the content of potassium hydroxide exceeds 0.7 wt%, the pH value is preferably 8.0 Lt; RTI ID = 0.0 > alkaline < / RTI > Thus, the potassium hydroxide is maintained at 0.3 wt.% To 0.7 wt.%, So that the pH value of the emulsified asphalt can be maintained at 60 to 8.0.

The emulsified asphalt is prepared by filling the tank with hot water at 55 ° C to 65 ° C and adding a small amount of the emulsifier with stirring, then adding potassium hydroxide (KOH) to adjust the pH value to 6.0 to 8.0, And passing through a colloid mill. Hydrochloric acid or calcium chloride may be added in an amount of 0.5 wt% to 1.5 wt% of the weight of the emulsified asphalt to improve the storage stability. If the content of hydrochloric acid or calcium chloride is less than 0.5% by weight, the storage stability effect can not be obtained. If the content of hydrochloric acid or calcium chloride exceeds 1.5% by weight, .

Here, the emulsifier may be at least one selected from the group consisting of carboxylic acid salts, dodecylbenzenesulfonic acid salts, alkylaryl sulfonates, higher fatty acid alkali metal salts, alkylbenzenesulfonates, alpha-olefin sulfonates, sodium alkylarylsulfonates, Phenoxy-2-polyoxy-ethylene-3-ammonium-sulfate or sodium dioctylsulfosuccinate, sodium dodecyl sulfate, polysorbate 80 may be mixed and used.

The emulsified asphalt thus produced had an Agglomer viscosity of 3 to 40 at 25 ° C, a sieve residue of 1.18 mm, a mass ratio (%) of 0.3 or less, an aggregate mixture uniformity, (1/10 mm) at 25 ° C, 60 cm or less at 25 ° C, an elongation of 40 cm or more at 15 ° C, and a toluene soluble content of 97 %, And the float retention time is obtained as a product having a temperature of 60 ° C or more for 1,200 seconds or more.

The cement filler is added to enhance the density and durability of the fiber-reinforced room temperature regenerated asphalt mixture to improve resistance to plastic deformation, and the filler is formed as a component excluding the cement with low ductility.

That is, the cigarette fills are cement-free and contain 40 wt% to 50 wt% of desulfurized gypsum, 7.5 wt% to 12 wt% anhydrous gypsum, 41 wt% to 49 wt% steel making slag powder, 1.5 wt % To 2.5% by weight of lithium carbonate. When the cement is mixed, the problem of cracking due to insufficient ductility and the problem of the aggregate desorption phenomenon can be solved.

Also, the cemented filler having the above composition has a water content of 1% or less, a particle size of 0.6 mm, a permeability of not less than 95%, a permeability of not less than 90%, a permeability of not less than 90% Is formed into a powder having a body passing ratio of 70% or more and is uniformly mixed in quantity when mixed with the aggregate and the fiber material.

As shown in FIG. 4, when the weight of the aggregate is less than 4.8% by weight, the indirect tensile strength is lower than 0.25 MPa, so that it is difficult to withstand sufficient tensile resistance. The porosity lower limit condition of% is not satisfied. Therefore, the cement composition filled as described above is added by 4.8% by weight to 7.0% by weight based on the weight of the aggregate.

At this time, water corresponding to 2% by weight of the aggregate is first mixed with a cement filler without cement, and then the cement material filled with water is pressurized to a higher pressure by 0.5 to 1.0 Bar compared to the atmospheric pressure, By injecting the filler, it is possible to solve the problem of the scattering of the filler occurring during the charging process, and to solve the problem that the emulsified asphalt is unevenly mixed.

The fibrous material is supplied and mixed while being cut shortly before being fed into the mixing mixer in the form of a chop having a short length of 5 mm to 30 mm by using a rotary cutter using a rotary cutter. It is easy to cut, (Polyethylene terephthalate) fibers, which can be used as a binder, can be used.

If the length of the fibrous material is less than 5 mm, the effect of interlinking of the aggregates is reduced, and if the length of the fibrous material exceeds 30 mm, even if continuous fibers are cut off immediately before the mixing, And is not uniformly distributed in the asphalt mixture. Therefore, the length of the fiber material is maintained at 5 to 30 mm, preferably at 7 to 20 mm.

The fibrous material is added in an amount of 0.08% to 1.0% based on the weight of the aggregate. 5, the indirect tensile strength can be increased in proportion to the content of the fibrous material in the region where the fibrous material content of the polyethylene terephthalate is less than 0.08% by weight of the aggregate, This is because the effect of increasing the indirect tensile strength becomes constant in the region exceeding 0.08 wt%. If the fibrous material exceeds 0.15% by weight of the aggregate, the porosity lower limit of the surface asphalt mixture specified in KS I 3022 is lower than 4%, and the content of the fibrous material is maintained at 0.15% by weight or less based on the aggregate weight desirable.

Hereinafter, a method of manufacturing the fiber-reinforced normal temperature regenerated asbestos according to the present invention will be described in detail.

Step 1 : First, the aggregate conforming to KS I 3022 according to the particle size standard of the base layer or the surface layer aggregate is introduced into the mixer using the recycled aggregate obtained from the waste asbestos as a main component (S110).

The aggregate to be fed into the mixer is composed entirely of recycled aggregate, but it may contain some new aggregate that is not obtained from waste ascon to meet the criteria of KS I 3022.

Step 2 : The fibrous material and the cement filler are then simultaneously fed through a separate feed line to a mixing mixer at a higher pressure than the atmospheric pressure by 0.5 bar to 1.0 bar to ensure that the air is not scattered into the air and is precisely dosed (S120).

In this case, the fiber material is fed by 0.08 to 0.15 weight% of the aggregate input amount in the form of a 5 mm to 20 mm chopped fiber cut into a polyethylene terephthalate continuous fiber by a rotary cutter immediately before mixing.

The cigarette fills are made of desulfurized gypsum in an amount of 40 wt% to 50 wt%, anhydrous gypsum in an amount of 7.5 wt% to 12 wt%, 41 wt% to 49 wt% steel-making slag powder, 1.5 wt% to 2.5 wt% By mass, and has a water content of 1% or less, a particle size of 0.6 mm as a passing mass, a body passing ratio of 100%, a 0.5 mm body passing ratio of 95% or more, a 0.15 mm body passing ratio of 90% And a through rate of 70% or more is satisfied. The cement filled filler thus prepared is firstly mixed with water in an amount of 1% by weight to 3% by weight based on the weight of the aggregate. The amount of the cesium filled material is increased by 4.8% by weight to 7.0% by weight of the aggregate.

It is possible to prevent the fibrous material and the cesium compound filler from being scattered and blown into the air by injecting the fibrous material and the cesium filler through a separate supply line which is supplied at a slightly higher pressure than the atmospheric pressure. Even if the microfine fiber material having a diameter of 5 to 20 탆 is cut into the prism shape in advance, the fiber material can not be bundled when it is tangled into the mixing mixer by itself, but continuous fibers having a diameter of 5 탆 to 20 탆 are cut by a rotary cutter So that the fiber material introduced into the mixing mixer can be uniformly mixed with the cement material and the like in a homogeneous state without lumping.

Here, the supply lines of the fiber material and the cement material filler are formed at an angle of about 3 to 20 degrees and formed at the same height, and each of the supply lines is formed as a closed end surface which is not exposed to the outside, It is possible to more uniformly induce mixing of the filler materials while preventing scattering of the filler materials into the mixer.

At this time, the fiber material and cyanide filler are simultaneously fed into the mixing mixer, but need not be fed through the same feed line. Accordingly, the fibrous material and the cement filler are not mixed together in the aggregate filled in the mixer, and the mixture is mixed with the mixer.

Step 3 : The aggregate, the fiber material, and the cement material filler are then firstly mixed for a first time (for example, 15 seconds) by rotating the mixing mixer or rotating the screw installed in the mixing mixer (S130 ).

Step 4 : Subsequently, asphalt asphalt prepared from straight asphalt, emulsifier and water is added to the mixture mixer by 3.8 wt% to 4.2 wt% of the aggregate (S140).

At this time, in the emulsified asphalt, the emulsified asphalt is filled with hot water at 55 ° C to 65 ° C in the tank, added with small amounts while stirring the emulsifier, and then potassium hydroxide (KOH) , And emulsified water is passed through a colloid mill together with straight asphalt.

The emulsified asphalt thus produced is fed into the mixing mixer at a pressure of about 0.5 to about 1.0 bar higher than the atmospheric pressure by 3.8 to 4.2 wt% of the aggregate weight.

Step 5 : Thereafter, the aggregate, the fibrous material, the cemented filler material, and the emulsified asphalt are mixed in a second (for example, 45 seconds) period by rotating the mixing mixer or rotating the screw provided in the mixing mixer And the mixture is mixed to complete the production of a room-temperature recycled ascon to be packed on the road (S150).

The fiber reinforced binder for road pavement according to the present invention and the method for producing the same may be prepared by mixing the fiber reinforced binder composed of emulsified asphalt, cement filler and fiber material with the waste asbestos recycled aggregate at the above- Crack resistance resistance, and porthole resistance ability generated in the coated package due to vehicle load and moisture penetration even when the recycled aggregate obtained from waste asbestos is manufactured without heating at room temperature .

In addition, even if the asphalt mixture is made of a thin microfiber fiber having a diameter of 5 to 20 탆, the continuous fiber is finely cut to 5 to 30 mm immediately before being put into a mixing mixer using a rotary cutter It is possible to maximize the binding effect of the fibrous material by uniformly mixing the aggregate and the emulsified asphalt with the filler material without losing the fibrous material.

In addition, the present invention relates to a method of manufacturing a cement mortar composition, comprising mixing a cementitious filler in powder form with water and introducing the mixture into a mixer, wherein a supply line of the fiber material and a supply line of the cement material filler are separately formed, By supplying the fibrous material and the cement material filler at the same height with an acute angle of 20 degrees, it is possible to obtain an advantage that mixing of the cementitious filler material is prevented while scattering is prevented when the cementitious filler is introduced into the mixer.

The atmospheric regenerated ascon produced as described above is transported to a packaging place by means of transportation, and the transported atmospheric ascon is delivered to the packaging surface at a predetermined thickness using a manpower or an asphalt finisher by a conventional method, Can be used to package the road by paving cracked inhibitor to the top of the compaction pavement at room temperature ascon mixture and curing the compaction surface .

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.

Claims (14)

An aggregate comprising a recycled aggregate obtained from waste asbestos;
3.5 wt% to 4.4 wt% of emulsified asphalt of the aggregate mixed with straight asphalt, emulsifier, and water;
4.8 to 7.0% by weight of the aggregate, not containing cement;
0.08% to 0.15% by weight of the aggregate in a chop form having a length of 5 mm to 30 mm;
Wherein the cementless filler comprises 40 wt% to 50 wt% of desulfurized gypsum, 7.5 wt% to 12 wt% anhydrous gypsum, 41 wt% to 49 wt% steelmaking slag powder, 1.5 wt% % To 2.5% by weight of lithium carbonate.
The method according to claim 1,
Wherein the aggregate comprises a part of new aggregate.
The method according to claim 1,
Wherein the emulsified asphalt has a penetration of 60 to 100 and comprises 52 wt% to 56 wt% straight asphalt, 41 wt% to 45 wt% water, 0.5 wt% to 1.5 wt% emulsifier, 0.3 wt% Based rapid-curing type emulsified asphalt composed of 0.7 wt% of potassium hydroxide (KOH) and 0.5 wt% to 1.5 wt% of calcium chloride.
The method according to claim 1,
The cementless filler has a moisture content of 1% or less, a particle size of 0.6 mm, a permeability of not less than 95%, a permeability of not more than 90% and a permeability of not more than 70% Fiber reinforced ordinary temperature regenerated ascon.
5. The method according to any one of claims 1 to 4,
Wherein the fiber-reinforced normal-temperature ascon is used for road pavement.
An aggregate feeding step of feeding an aggregate containing recycled aggregate obtained from waste asbestos into a mixing mixer;
A fiber material feeding step of finely cutting a continuous type fiber into a chop-shaped fiber material having a size of 5 mm to 30 mm using a rotary cutter, and injecting the cut fiber material into the mixing mixer at a pressure higher than atmospheric pressure;
Filling the cement with the fiber material in the mixing mixer while mixing the cement filled material with water;
A primary mixing step of mixing the aggregate, the fibrous material and the cement based filler in the mixing mixer for a first time;
An emulsified asphalt admixture step of feeding 3.8 wt% to 4.2 wt% of the asphalt mixed with straight asphalt, emulsifier, and water into the mixer;
A second mixing step of mixing the aggregate, the fibrous material, the cement fills and the emulsified asphalt in the mixing mixer for a second time;
Wherein the fibrous material is cut immediately before the primary mixing step. ≪ RTI ID = 0.0 > 11. < / RTI >
The method according to claim 6,
Wherein the filling material is injected into the mixing mixer at a higher pressure than the atmospheric pressure by a pressure of 0.5 bar to 1.0 bar.
8. The method according to claim 6 or 7,
The filling material is charged into the mixing mixer by 4.8 wt% to 7.0 wt% of the aggregate,
Wherein the fiber material is supplied in a quantity of 0.08 to 0.15% by weight of the aggregate to the mixing mixer.
8. The method according to claim 6 or 7,
Wherein the emulsified asphalt has a penetration of 60 to 100 and comprises 52 wt% to 56 wt% straight asphalt, 41 wt% to 45 wt% water, 0.5 wt% to 1.5 wt% emulsifier, 0.3 wt% A potassium hydroxide (KOH) of 0.7 wt%, and calcium chloride of 0.5 wt% to 1.5 wt%.
8. The method according to claim 6 or 7,
The cementless filler has a moisture content of 1% or less, a particle size of 0.6 mm, a permeability of not less than 95%, a permeability of not more than 90%, and a permeability of not less than 0.08 mm of not less than 70% Of the fiber reinforced normal temperature recycled ascon.
Transporting the fiber-reinforced room temperature asconone according to any one of claims 1 to 4 to a packaging site;
Placing the transported atmospheric ascon at a predetermined thickness on the packaging surface;
A compaction step in which the installed room temperature asbestos mixture is made to have a porosity of 6 to 15%;
A crack inhibitor spraying step of spraying a crack inhibitor on the upper surface of the packed surface of the ascon mixture at room temperature;
A packaging surface curing step to cure the packaging surface;
And a road pavement method comprising: delete delete delete

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