KR100828543B1 - Method for recycling asphalt mixture layer of pavement in place continuously and self-propelled vehicle system therefor - Google Patents

Abstract

A process of heat-softening the asphalt mixture layer on the pavement, a process of digging the heat-softened asphalt mixture layer and maintaining the temperature at a temperature not to be agglomerated into a granulated asphalt mixture, and A differentiation process for classifying the asphalt mixture into a plurality of particle size groups, a step of mixing and designing the asphalt mixture into a recycled asphalt mixture using each of the classified plurality of particle size groups, and uniformly mixing the recycled asphalt mixed layer formulated and designed The pavement asphalt mixture is continuously carried out on the road while moving the autonomous vehicle system by a process including the step of spreading, compressing, and compressing the uniformly mixed recycled asphalt mixture to form a recycled asphalt mixture layer. Can be played with.

Description

Method for recycling asphalt mixture layer of pavement in place continuously and self-propelled vehicle system therefor}

The present invention relates to a method for continuously regenerating a asphalt mixture layer on a pavement in a roadbed and a self-propelled vehicle system for the same, and more specifically, to a three-layer pavement in which a roadbed and an asphalt mixture are laid on a roadbed. The asphalt mixture layer of the road made of the structure is crushed by heat softening while moving the autonomous vehicle system, finely granulated by maintaining at a temperature which does not become agglomerated granules, reused as a asphalt mixture for regeneration, and continuously on the road. A method for regenerating an asphalt mixture layer on a pavement and a self-propelled vehicle system therefor.

As shown in Fig. 1, the pavement usually has a three-layer structure of a roadbed, a roadbed, and an asphalt mixture layer, and on a compressed roadbed, sand and crushed stone, that is, aggregate which is a material of asphalt pavement. The furnace is compressed by adding a stabilizer such as cement or petroleum asphalt oil, and a lower layer and an upper layer are installed in view of strength. The base layer and the surface layer which consist of an asphalt mixture are compressed on the roadbed. In general, the pavement refers to a `` norbane + asphalt mixture layer '', and the asphalt mixture refers to a powder of limestone (filler), sand and crushed stone, which fills the gap between asphalt and aggregate which is a binder. It consists of aggregates.

   As shown in Fig. 1, the asphalt mixture has a two-layer structure of a base layer and a surface layer, but usually consists of a dense asphalt mixture, and the ratio of the gaps in the mixture, that is, the porosity, is around 4%. It is an impervious packaging. On the other hand, there are a drainage package and a water-permeable package having a porosity of about 20%. However, water-permeable pavement is generally not used for heavy traffic pavement, because water passes through the road and softens to the road. It will be.

On the other hand, in heavy traffic pavement with frequent passage of vehicles, the road surface is exposed to rain winds for a long time, causing friction of road surfaces, unevenness caused by "wheel marks left", cracks due to deterioration, and the like when rainfall or snow melts. It is known that water accumulates on the road surface, and splashing, hydroplaning, and the like hinder vehicle driving safety. Such roads require pavement regeneration due to pavement flipping and maintenance.

The drainage pavement is in accordance with this necessity, and as shown in FIG. 2, the side layer of the asphalt mixture which is laid on the roadbed is impermeable, and the surface layer which is laid thereon is permeable, and water is not shown. It is an asphalt mixture layer guided and drained by a gutter or the like, and is usually referred to as an intervening asphalt mixture. Though there is a way of thinking that the drainage performance can be increased, the porosity is further increased. As a result, the strength of the surface layer itself decreases, or the road surface temperature increases due to the increase in the outside temperature, thereby softening the asphalt as a binder. Viscosity falls, there exists a problem of causing aggregate peeling by the vehicle etc. which run, and an empty porosity must not be enlarged unintentionally.

Although the pavement thickness is determined by the roadbed's firmness (CRB value) and the traffic volume (N value) from the standpoint of durability, the thickness of each of the roadbed and asphalt mixture is usually 2 times the maximum particle size of the aggregate contained therein. It is designed as about 3 times. The maximum particle diameter of the aggregate contained in the roadbed is usually about 40 mm, and therefore the roadbed thickness is about 10 to 12 cm. The maximum particle diameter of the aggregate contained in the asphalt mixture is usually about 20 mm, and the thickness of each of the base layer and the surface layer is designed to be about 4 to 5 cm, and is about 8 to 10 cm in the entire asphalt mixture layer.

The particle size of the aggregate is called particle size, and the result of filtering the mixed state through various sieves is called the particle size distribution. However, the particle size distribution of the aggregate contained in the asphalt mixture is classified into the particle size of the asphalt mixture. Open particle size differs naturally in asphalt mixtures. 3 and 4 show the respective particle size distributions. These are graphs in which the horizontal axis represents the size of the mesh and the vertical axis represents the weight percentage (pass weight percentage) of the material that passed through the mesh of each size. Aggregates are generally called coarse aggregates having a large dimension on the basis of a particle diameter of 5 mm and fine aggregates having a small dimension. The coarse aggregate may be further subdivided into medium aggregates having a particle diameter of 5 mm or less and 13 mm or less and coarse aggregates having a particle diameter aggregate of 13 mm and 20 mm or less as coarse aggregate. In the case of reusing aggregate contained in an asphalt mixture, etc., it distinguishes and uses in 2 or 3 groups in many cases, and also this classification is employ | adopted for convenience in this invention.

In FIG. 3, it can be seen that each particle diameter aggregate of 0.075 mm or more and 20 mm or less is distributed continuously. This is a state in which the grain size is mixed so that the aggregate is densely filled, that is, it shows continuous particle size or particle size continuation, and is generally called an impermeable "grain density asphalt mixture". 4 shows a case where the heavy aggregate is missing from the aggregate consisting of three groups, for example. Although not shown, in the case of aggregates composed of two groups, coarse aggregates having a particle diameter of 5 mm or more are omitted, resulting in aggregate distribution having a particle diameter of 5 mm or less. None of them show gap particle size or particle size discontinuity, but are not continuous particle size or particle size continuous, but in the case of three groups in which heavy aggregates are selected, the coarse aggregate is small because the weight ratio of fine aggregate to fine aggregate is small, for example, about 30% or less. Three aggregates are densely packed in the voids of the liver. Moreover, in the case of group 2, since the aggregate is selected, only the aggregate is aggregated. In any case, when a new asphalt or the like is added to form a recycled asphalt mixed layer, the result is a "density asphalt mixture" having a porosity of about 4%. On the other hand, if new asphalt or the like is added to the heavy aggregate selected from group 3 or the coarse aggregate selected from group 2, and the recycled asphalt mixed layer does not contain fine aggregates having a particle diameter of 5 mm or less, voids may occur between the aggregates. A particle size distribution can be obtained, and this is referred to as an "incidence asphalt mixture". These are collectively referred to as dense asphalt and porous asphalt, respectively.

Asphalt, which is a binder (binder) of aggregates, includes raw, unmodified, straight asphalt, and modified asphalt to which a modifier such as rubber and resin is added in order to increase the viscosity, and the temperature and viscosity of FIG. As can be seen from the relationship, none of the asphalt becomes less viscous around 180 ° C, the aggregate is hardly destroyed and the aggregate of the asphalt mixture is scattered. That is, the aggregate coated with asphalt becomes fine particles. On the other hand, as it falls below 100 ° C, the viscosity of the asphalt is increased, and the aggregate coated with the asphalt becomes agglomerated and becomes completely solid at room temperature. In this state, the asphalt mixture is also referred to as asphalt concrete. According to the simulation shown in FIG. 6, the temperature which does not become agglomerated particle becomes about 120 degreeC.

Until now, the asphalt mixture in the standard three-layer pavement has been described. However, the asphalt mixture has been exposed to abrasion of the road surface due to frequent passage of the vehicle or to heavy rain as described above. Due to fluidization of the asphalt mixture due to softening of the asphalt (binder) due to an increase in external temperature or the like, it is referred to as " wheel marks " and causes cracks due to unevenness and heat. The road regeneration method of the existing pavement usually refers to the regeneration method for the surface layer in the two-layer structure composed of the foundation and the surface layer, but deterioration such as abrasion of the road surface or `` wheeling '' is to the base layer. In addition, the present invention is conceived as a regeneration method of the asphalt mixture, and proposes a road regeneration method including a surface layer regeneration method, and will be described below while comparing the present invention with a conventional method.

Various pavement methods are applied to pavement works constructed on various roads and airfield runways, including a repair method for the purpose of the construction, and a method of flipping the surface and foundation. On the other hand, the reduction of the packaging materials consumed for the maintenance and repair of roads with a large extension of the road, and the reduction of the packaging generating materials generated in the paving work, are not intended as industrial wastes. For example, after construction of the recycling method for 3 years in peace, the recycling method is rapidly spread because such packaging generating materials are reused as old materials. Such a construction method usually carries / loads a packaging generating material to a fixed plant away from a construction site by a vehicle for construction, etc., and is re-introduced and reused as a reprocessed old material. Collectively, this is called a plant regeneration packaging method. In general, a method of heating the surface layer of the asphalt mixture and regenerating it on the road according to the breakage condition of the pavement in combination with or without the combination thereof, or a method of crushing the asphalt mixture and mixing it with the roadbed to regenerate it on the road as a new roadbed. This is known. Usually, the former is called a roadbed layer regeneration method, and the latter is called a roadbed layer regeneration method. As mentioned above, this invention relates to what was designed on the premise of the former subgrade surface regeneration method.

(Non-Patent Document 1) "Packing & Recycling Handbook" (Japan Road Association)

Asphalt is composed of asphaltene in powder and malthene in oil, and as the pavement ages, maltene decreases and hardens, increasing the proportion of asphaltene suspended therein. As a result, the viscosity of the asphalt drops. In addition, with the aging of the pavement, the aggregate contained in the asphalt mixture layer may also cause reduction or damage due to wear or the like. Therefore, in the case of reusing an asphalt mixture as a pavement generating material as an old material, for example, a regenerating additive such as a softener or a new asphalt mixture (new material) and / or a required amount of new asphalt as a modifier are weighed, and these are added to the old material. In addition, it is required to guarantee the predetermined performance as shown in Table 1. It is difficult to put such a compounding design into a series of construction methods for advancing the construction while moving from a construction site, for example, from the viewpoint of construction efficiency. Generally, a compounding design is performed separately in a fixed or mobile plant, where predetermined The asphalt mixture for regeneration that satisfies the performance is constituted and brought back into the construction site. The so-called plant regeneration packaging method is settled as a guarantee of predetermined performance. However, since the old materials must be carried in and out between the plant and the construction site, the construction efficiency as described below and the entry and exit of construction vehicles to the site are described. Technological and social problems such as traffic obstacles due to the problem have become clear, and a mobile plant method, a vehicle-type plant, etc. for improving such a problem are also proposed.

(Patent Document 1) Japanese Patent Application Laid-Open No. 2002-79136

(Patent Document 2) Japanese Patent Application Laid-Open No. 2004-11406

(Patent Document 3) JP-A-73715

As described above, for example, the surface layer of the asphalt mixture is dug by heating with a regeneration road heater, and a regeneration additive such as a softener is added and stirred as a series of construction steps on the road. A new asphalt mixture (new material) and / or a new asphalt is added, mixed, spreaded by screed, and compressed as a modifier, so-called roadbed surface regeneration method. This construction method includes a remixing method used to add regeneration additives, new materials and / or new asphalt to the old materials, to mix them, and to improve the viscosity of the old materials, the bonding strength of the asphalt, etc., and to make one layer. There is a repave method that is used to double-layer a new material or the like on a reclaimed old material when there is no need to improve the quality or when a slight improvement of the quality is appropriate. For example, grooves are formed by cutting both ends in the road width direction in advance, digging the surface layers between the grooves, spreading the cut surface layer over the road width, and then removing the same amount of grooves previously cut thereon. Road surface regeneration still remains, such as the method of adjusting the height of the road surface by adding materials, or the method of removing a part of the surface layer of the old material and adding new materials and remaining voids between aggregates. There are not many proposals regarding the performance improvement of the recycled asphalt mixture in the process. However, none of the conventional methods is a roadbed regeneration method in which an aggregate having a different particle size included in the old material is returned to the raw material, and the compounded design is reused as a regenerated material and is not reused. Therefore, in the construction process on a series of roads, a process of classifying aggregates having different particle sizes included in the old material into a plurality of particle size groups by a discriminating device or the like and weighing them by a metering device is included in the process of mixing and designing the reclaimed material. It is not assumed, and therefore, it is impossible to guarantee a certain performance freely, and as shown in FIG. 3 or FIG. 4, particle size distribution cannot be guaranteed. The AR2000 manufactured and sold by the present applicant is a breakthrough method that enables the continuous recycling of asphalt mixture layers of pavement on the road while moving the autonomous vehicle system automatically controlled at an average speed of 4 to 5 m per minute, but also a predetermined method. It is similar to the case of the conventional construction method in that performance cannot be guaranteed freely.

(Non-Patent Document 2) "Packaging and Recycling Handbook" (Japan Road Association)

(Patent Document 4) Japanese Patent Application Laid-Open No. 2004-124549

(Patent Document 5) JP 2001-262509 A

Regarding the method for regenerating the asphalt mixture (old material) on the road, there are various various proposals in addition to the urea technique and those shown in the above-mentioned documents, but none of them is used in a series of construction steps. Aggregates of different particle sizes included in the table are classified into a plurality of particle size groups by means of a discriminating device, a measuring device, and the like. It can't be done.

(Patent Document 6) Japanese Patent No. 3293626

Patent Document 7: Patent No. 3380590

(Patent Document 8) Japanese Patent Laid-Open No. 11-117221

(Patent Document 9) Japanese Patent Application Laid-Open No. 2002-61140

In the conventional method of the road regeneration method of an existing pavement, in the case of the method of interposing the regeneration plant of an asphalt mixture (old material), as already mentioned, it is called carrying in and out of the old material and the reclaimed asphalt mixture to a construction site. Since a separate process is required, it is difficult to avoid the occurrence of warming gas due to traffic coming and going and the traffic congestion caused by long-term road blockage at the time of carrying in and out, and prolonging the construction period and increasing the cost due to the decrease in construction efficiency. In addition, since there is a distance from the regeneration plant to the construction site, the temperature of the reclaimed asphalt mixture decreases until it arrives at the construction site, resulting in a lack of compression, a lack of density, and a decrease in adhesion to aggregate.

On the other hand, in the conventional roadbed surface regeneration method, as already mentioned, a regeneration additive or a new material is thrown into the old material at the construction site, mixed, spread as a reclaimed asphalt mixture, and compressed. However, until now, as a regeneration material which softens the old material, digs it, maintains it at a temperature which does not become agglomerated and makes a fine granulated asphalt mixture, classifies it into a plurality of particle size groups, and performs the regeneration plant. It has not been developed that the mixing design of the old material is continuously carried out on the road, so that it can be spread and compressed as a reclaimed asphalt mixture that satisfies predetermined performance. On the premise of solving the technical problem which made such development possible, existing asphalt is proposed by the heating method and apparatus by injection and circulation of about 600 degreeC hot air moving while proposed by the patent 3466621 adopted by AR2000 mentioned above. While maintaining the surface temperature of the mixture layer at around 230 ° C, it is possible to heat the depth of 40-50mm to about 80 ° C in a short time, thereby digging up the existing asphalt mixture layer having a depth of 40-50mm and not coagulating the granules. Maintaining the temperature is to enable fine granulation of the aggregate coated on the asphalt.

(Patent Document 10) Patent No. 3466632

In addition, in the conventional road surface regeneration method, since the function, properties, and state of the asphalt mixture layer are changed, the particle size distribution of the aggregate cannot be changed into a series of construction steps in the roadbed, so that the asphalt mixture layer Was recycled to raw materials at the construction site, and the particle size distribution could not be switched. That is, in the conventional method, it is natural, but it is not possible to continuously form the asphalt mixture layer on the road, for example, by making the density-adhesive asphalt mixture layer raw material at the construction site and reusing it. In more detail, there has been no idea that the process of enabling the rearrangement design of the particle size distribution of the aggregate contained in the existing asphalt mixture layer is put into a series of construction processes. The above-mentioned Patent Document 3 discloses, "At least, a means for discriminating crushed waste asphalt concrete and / or waste cement concrete, recycled aggregate having different particle diameters from the discriminated waste asphalt concrete and / or discriminated waste cement concrete. As a means for mixing at a constant rate and a means for metering and supplying, a means for mixing new aggregates having different particle diameters at a constant rate and a means for metering and supplying, a means for metering and supplying new asphalt and the recycled aggregates, A road pavement vehicle comprising a means for heating and mixing the new aggregate and the new asphalt. &Quot; is shown, and this is a vehicle provided with a hopper, a sieve, a mixer, etc. in a frame on a cart. It is a type plant, can be placed near the construction site, and mechanically crushed old material can be redesigned in a formulation that satisfies the desired performance. However, it is not a vehicle which puts into a series of construction processes and comprises a part of the system which made it possible to recycle old material continuously. That is a kind of mobile plant. Naturally, it is not based on the idea that raw aggregates contained in the old materials will be made raw materials at the construction site and reused while re-designing them. More specifically, while synchronizing with the movement of the autonomous vehicle system, the old material is softened by heat, maintained at a temperature which is not broken and aggregated, and is made into a fine granulated asphalt mixture, which is classified into a plurality of particle size groups. It is not possible to put the compounding design which is made into a raw material and to measure it, and to carry out a regeneration plant into a series of construction processes, and to form a layer of reclaimed asphalt mixture continuously on a hearth.

The above-mentioned problem is solved by maintaining the existing asphalt mixture layer which has been dug through heat softening at a temperature which does not become agglomerated granules, making the finely granulated asphalt mixture, filtering it through a sieve of a means, and classifying it, usually 5 mm. Since the following fine aggregates are collected through the sieve of the last stage together with the gusphalphate, and heavy aggregates and / or coarse aggregates having a larger particle diameter are also recovered by differentiation of shear, by measuring the plurality of particle size groups, In fact, the present invention has the following characteristics based on the knowledge that the compounding design can be performed during the hearth regeneration step.

The invention described in Claim 1 is a method of continuously regenerating an asphalt mixture layer on a pavement while moving a self-propelled system, and heating and softening the asphalt mixture layer, and the asphalt mixture that has been softened. A step of digging the layer and maintaining at a temperature that does not aggregate into granules, to form a fine granulated asphalt mixture, a differentiation process of classifying the finely granulated asphalt mixture into a plurality of particle size groups, and a plurality of classified Using each of the particle size groups, blending and designing the asphalt mixture into the recycled asphalt mixture, uniformly mixing the blended and designed recycled asphalt mixture, and spreading and compressing the uniformly mixed recycled asphalt mixture Characterized in that it comprises a step of forming a recycled asphalt mixture layer .

Invention of the base material of Claim 2 adds to the characteristics of the invention of Claim 1, and it makes the asphalt mixture layer which was fine-grained by keeping the said asphalt mixture layer at the temperature which does not become agglomerated and agglomerated. The step of blending and designing the asphalt mixture into a recycled asphalt mixture using each of the above-mentioned steps and / or the plurality of particle size groups classified further comprises adding a regeneration additive such as a softener. It is done.

The invention described in Claim 3, in addition to the features of the invention as described in any one of Claims 1 to 2, utilizes each of the plurality of particle size classes classified to recycle the asphalt mixture. The process of mixing and designing the mixture includes storing and discharging the unused particle size group among the plurality of classified particle sizes, and discharging the stored unused particle size group from the independent vehicle system. .

The invention described in Claim 4, in addition to the features of the invention as described in any one of Claims 1 to 3, utilizes each of the plurality of particle size classes classified to recycle the asphalt mixture. The process of blending design to the mixture is characterized by including a step of adding a new asphalt mixture (new material) to the blended designed recycled asphalt mixture.

The invention described in Claim 5, in addition to the features of the invention described in Claim 4, further comprises adding the new asphalt mixture (new material) to the recycled asphalt mixture that is formulated and designed. And adding new asphalt as a modifier to the reclaimed asphalt mixture to which the new material is added.

The invention described in Claim 6 is characterized in that, in addition to the features of the invention as defined in any one of Claims 1 to 5, the regenerated asphalt mixture is uniformly mixed and compressed into a reclaimed asphalt mixture layer. The process includes spreading the uniformly mixed reclaimed asphalt mixture on the upper and lower layers and compressing the mixture to form a two-layer structure, wherein the lower layer of the upper and lower layers is at least an impermeable reclaimed asphalt mixture layer. do.

The invention described in Claim 7 is a method of continuously regenerating the asphalt mixture layer on the road through the asphalt mixture layer of the pavement while moving the autonomous vehicle system, and heat-softening the asphalt mixture layer, Dividing the heat-softened asphalt mixture layer and maintaining the temperature at a temperature not to be agglomerated and granulating, and forming a fine granulated asphalt mixture, and a differentiating process of classifying the finely granulated asphalt mixture into a plurality of particle size groups. And mixing the asphalt mixture into the recycled asphalt mixture by using each of the classified particle size groups, and mixing the recycled asphalt mixture with the mixing design. This, (a) is designed to uniformly part of the recycled asphalt mixture A step of forming a first reclaimed asphalt mixture to form an impermeable reclaimed asphalt mixture by combining, and (b) a second to form a permeable reclaimed asphalt mixture by uniformly mixing all or part of the remainder of the blended designed reclaimed asphalt mixture. And a step of spreading and compressing the first recycled asphalt mixture to form an impermeable recycled asphalt mixture layer and a second recycled asphalt mixture layer on the impermeable recycled asphalt mixture layer. It is characterized in that it comprises a step of spreading, compressing and intervening to form an asphalt mixture layer.

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The invention described in Claim 9, in addition to the features of the invention as described in Claim 7, breaks down the heat-softened asphalt mixture layer and maintains at a temperature that does not aggregate into fine granulated asphalt. The step of blending and designing the asphalt mixture into the recycled asphalt mixture using each of the above-mentioned steps to make a mixture and / or each of the classified particle size groups further includes a step of adding an additive for regeneration such as a softener. It is characterized by.

The invention described in Claim 10 is, in addition to the features of the invention as described in any one of Claims 7 to 9, wherein the differentiating step of classifying the finely granulated asphalt mixture into a plurality of particle size groups. The finely granulated asphalt mixture is characterized in that it is a differentiation process for classifying into two groups of fine aggregate and coarse aggregate, or three groups of fine aggregate and heavy aggregate and coarse aggregate.

The invention described in claim 11 regenerates the asphalt mixture using each of the plurality of particle size groups classified in claim 7 in addition to the features of the invention described in any one of claims 10. The process of mixing and designing the asphalt mixture includes the steps of storing and discharging unused particle size groups among the plurality of classified particle sizes, wherein the stored unused particle size groups are discharged from the autonomous vehicle system. do.

The invention described in claim 12 regenerates the asphalt mixture using each of the plurality of particle size groups classified in claim 7 in addition to the features of the invention described in any one of claims 11. The process of blending design on an asphalt mixture is characterized by including a step of adding a new asphalt mixture (new material) to the blended designed recycled asphalt mixture.

The invention described in Claim 13, in addition to the features of the invention described in Claim 12, further comprises adding the new asphalt mixture (new material) to the recycled asphalt mixture that is formulated and designed. And adding new asphalt as a modifier to the reclaimed asphalt mixture to which the new material is added.

The invention described in Claim 14 is a self-propelled vehicle system consisting of a preheater vehicle, a miller vehicle, a blended design vehicle, and a mixer vehicle, which continuously reproduces the asphalt mixture layer on a pavement while moving, and the autonomous vehicle. The system maintains a fine granulator by maintaining a temperature at which the apparatus for thermally softening the asphalt mixture layer is opposed to a road surface and a temperature at which the asphalt mixture layer heated and softened by the preheater vehicle does not coagulate. A miller vehicle provided with a parched asphalt mixture, an apparatus for lifting and conveying the broken asphalt mixture at the front, a discriminating unit for classifying the conveyed asphalt mixture to a plurality of particle size groups in succession to the apparatus; Metering which measures each of the said several particle size group classified by this discrimination part. And a compound design vehicle equipped with a compound design device for classifying and placing all or a portion of the plurality of measured particle size groups on the road surface, and replacing the road surface with an import port at the front and a discharge port at the rear. And a mixing device such as a pug mill that receives, or uniformly mixes and discharges all or part of the plurality of particle size groups arranged on the road surface, and the plurality of the plurality of uniformly mixed and discharged parts at the rear of the mixing device. Consisting of a mixer vehicle installed to cover the whole or part of the particle size group, and before and after the apparatus for spreading / compressing one or more groups of augers and screeds, which are compressed to form a recycled asphalt mixture layer. It features.

The invention described in claim 15, in addition to the features of the invention described in claim 14, comprises a preheater vehicle comprising one or more vehicles, each of which comprises at least one heating device. It is provided to replace the asphalt mixture layer, characterized in that the asphalt mixture layer is heat-softened.

The invention described in claim 16, in addition to the features of the invention as claimed in any one of claims 14 and 15, further comprises a device for digging one or more glider devices. It is characterized by including.

The invention described in Claim 17 is, in addition to the features of the invention as described in any one of Claims 14 to 16, wherein the Miller vehicle includes the asphalt mixture layer at the front of the device to be dug. A heating apparatus for subsequent heat softening is further provided to replace the asphalt mixture layer, and the asphalt mixture layer is heat softened.

The invention described in Claim 18 is in addition to the features of the invention as described in any one of Claims 17 through 17, wherein the dig of the Miller vehicle and / or the compound design vehicle at the rear of the device. A storage section for regeneration additives, such as a softener, in the rear part of the blending design device or in the front of the blending device of the mixer vehicle, and / or the blending designing device in the asphalt mixture smashed by the digging device. Regeneration additives, such as a softener, are added to the asphalt mixture classified and measured by the above.

The invention described in Claim 19 is, in addition to the features of the invention as described in any one of Claims 14 to 18, wherein the Miller vehicle includes an importer such as a hopper at the front and a conveyor at the top. It is also equipped with an import / conveying device including a conveying part and a conveying part in the rear part, and accepting a new asphalt mixture (new material) brought in at a temperature which does not become agglomerated and granulated outside the self-propelled vehicle system, and conveying it to the compound design vehicle. It features.

The invention described in Claim 20 is, in addition to the features of the invention described in any one of Claims 19 to 19, the discriminating unit included in the formulation design device of the formulation design vehicle is a fine particle. The classified asphalt mixture is classified into at least two groups of fine aggregate and coarse aggregate, or is classified into three groups of fine aggregate and heavy aggregate and coarse aggregate.

As for invention of description of Claim 21, in addition to the characteristic of invention of any one of Claim 20 in Claim 14, the said measurement part contained in the said formulation design apparatus of the said formulation design vehicle is said plurality, It is characterized in that the metering unit for measuring each of the granularity group classified in the granularity of the.

The invention described in Claim 22 is, in addition to the features of the invention described in any one of Claims 21 to 14, wherein the compound design vehicle is an unused particle size group among the plurality of particle size groups classified. And a storage device for storing the unused particle size group stored from the storage device in addition to the vehicle amount system.

The invention described in Claim 23 is, in addition to the features of the invention as described in any one of Claims 22 to 22, wherein the compound design vehicle is adapted to the new An import / transport / discharge apparatus which receives and conveys the asphalt mixture (new material) at a temperature that does not coagulate and discharges it, and the discharge portion of the import / transport / discharge apparatus includes two discharge sections before and after the front discharge. From the part, the new asphalt mixture (new material) is added to all or part of the plurality of particle size groups arranged on the road surface by the formulation design device, and uniformly mixed by the mixing device of the mixer vehicle. It is characterized by.

In addition to the features of the invention described in claim 23, the invention described in claim 24 includes a tank for storing the new asphalt as a modifier in the front part of the mixing apparatus of the vehicle. A storage unit is also provided, wherein the new asphalt is added to all or part of the plurality of particle size groups arranged on the road surface by the compounding design device of the compounding design vehicle, and is mixed uniformly by the mixing device. do.

The invention described in Claim 25 is, in addition to the features of the invention described in any one of Claim 23 and Claim 24, wherein the compound design vehicle is a rear of the import / transport / discharge apparatus of the vehicle. A portion of the plurality of particle size groups classified and metered between the mixing device such as a pug mill provided with an opening and a discharge port and the mixing device and the blending design device near the discharge part of Also equipped with a loading device, such as a conveyor brought into a mixing device, carrying in a part of the plurality of particle size groups from the opening of the mixing device, and adding the new asphalt mixture (new material), by the mixing device, It is characterized by mixing uniformly.

In addition to the features of the invention described in Claim 25, the invention described in Claim 26 includes, for example, a tank for storing the new asphalt as a modifier in the vicinity of the mixing apparatus of the vehicle. A storage unit is also provided, and the new asphalt is added to a part of the plurality of particle size groups uniformly mixed by the mixing device.

The invention described in Claim 27 includes, in addition to the features of the invention described in any one of Claims 25 and 26, the plurality of particle sizes in which the mixing device of the compound design vehicle is classified and weighed. In some of the groups, the new asphalt mixture (new material) and / or new asphalt is added, uniformly mixed, and constitutes a second recycled asphalt mixture, and the mixing device of the mixer vehicle is classified and weighed. The new asphalt mixture (new material) and / or new asphalt are added to all or part of the rest of the plurality of particle size groups, and mixed uniformly to form a first recycled asphalt mixture.

The invention described in Claim 28, in addition to the features of the invention as described in Claim 27, further provides that the mixer vehicle spreads / compresses two groups of augers and screeds in the rear portion of the mixing apparatus. And the apparatus for spreading / compressing the first group spreads and compresses the first recycled asphalt mixture to form a first layer of recycled asphalt mixture, followed by the second group of spreading. A device for applying / compressing spreads the second recycled asphalt mixture on the first recycled asphalt mixture layer, compresses it to form a second recycled asphalt mixture layer, and uses a two-layer recycled asphalt mixture layer. do.

The invention described in Claim 29 is, in addition to the features of the invention described in Claim 28, wherein at least the first recycled asphalt mixture layer is an impermeable recycled asphalt mixture layer.

The invention described in Claim 30, in addition to the features of the invention described in Claim 28, is characterized in that the second recycled asphalt mixture layer is an intervening recycled asphalt mixture layer.

1 is a cross-sectional view of a general asphalt pavement.

2 is a cross-sectional view of a general drainage package.

3 is a particle size distribution diagram of the dense asphalt mixture.

4 is a particle size distribution diagram of the intervening asphalt mixture.

5 is a relationship diagram between temperature and viscosity of asphalt.

6 is a diagram illustrating a simulation result of an average temperature pattern of asphalt.

7 is a flowchart of a method of continuously regenerating an asphalt mixture layer of a pavement in a road according to an embodiment of the present invention.

8, a self-propelled vehicle system for continuously regenerating the asphalt mixture layer on the pavement according to the embodiment of the present invention.

9 is a preheater vehicle according to the embodiment of the present invention.

10 is a mirror vehicle according to the embodiment of the present invention.

11 is a compound design vehicle according to the embodiment of the present invention.

12 is a mixer vehicle according to an embodiment of the present invention.

A method for continuously regenerating a pavement asphalt mixture layer on a road according to the best mode for carrying out the present invention, and a self-driving vehicle system therefor will be described in detail with reference to Figs.

7 shows the whole process of the method for continuously regenerating the asphalt mixture layer of the existing pavement in the hearth according to the embodiment of the present invention, and the present method is a step of heat-softening the asphalt mixture layer (hereinafter, “ Heat softening step) and the heat-softened asphalt mixture layer, and hold it at a temperature which does not aggregate into granules, thereby making a fine granulated asphalt mixture (hereinafter referred to as a "fine granulated asphalt mixture"). Differentiation process (hereinafter, referred to as `` digging and fine granulation process '') and fine granulated asphalt mixtures are classified into aggregates of plural particle sizes (hereinafter referred to as "recycle aggregate") (hereinafter, "differentiation process"). And a process of mixing and designing the recycled asphalt mixture using each of the classified recycled aggregates (hereinafter referred to as the "compound design process"). ), The step of uniformly mixing the mixed designed recycled asphalt mixture (hereinafter referred to as "mixing process"), and the step of spreading and compressing the uniformly mixed recycled asphalt mixture to form a recycled asphalt mixture layer (hereinafter , "Called spreading and compressing step").

Among these processes, a process of adding a new asphalt mixture (hereinafter referred to as a "new material") to the blending design process (hereinafter referred to as a "new material addition process") as necessary, for regeneration of a softener or the like as necessary. The process of adding an additive (henceforth a "regeneration additive addition process") and the process of adding new asphalt as a modifier as needed (henceforth a "new asphalt addition process") are included.

With this method, the asphalt mixture layer of the existing pavement is properly classified in any case of the dense asphalt mixture layer, the intervening asphalt mixture layer, or the other asphalt mixture layer, Mixing design by weighing and adding new asphalt as regeneration additives and / or new modifiers such as new materials, softeners as needed, these asphalt mixture layers, one or two layers of compactness asphalt mixture layer or intervening degree Any of the asphalt mixture layers can be recycled on the road. In the case of regenerating the asphalt mixture layer of the existing pavement into a two-layer structure of the impermeable asphalt mixture layer and the intervening asphalt mixture layer, the mixing process is performed by uniformly mixing a part of the blended designed recycled asphalt mixture, thereby making the impermeable recycled asphalt mixture A step of forming the intervening asphalt mixture layer by uniformly mixing all or a part of the process of producing the first recycled asphalt mixture constituting the present invention (hereinafter referred to as "the first mixing process") and the blended designed recycled asphalt mixture It consists of a process (henceforth a "second mixing process") which produces | generates a 2nd recycled asphalt mixture.

The step of spreading and compressing includes spreading and compressing the first reclaimed asphalt mixture to form an impermeable asphalt mixture layer (hereinafter referred to as a "first spreading and compressing process") and this impermeable property. On the asphalt mixture layer, the second regenerated asphalt mixture is spread, compressed, and the intervention is also made into the asphalt mixture layer (hereinafter referred to as the "second spreading and compression process").

Fig. 8 shows an embodiment of the entire self-propelled vehicle system for realizing the above-described process according to the present invention. The autonomous vehicle system includes two preheater vehicles, a miller vehicle, a combination design vehicle, and a mixer vehicle. It is composed. The roadbed reproducing method according to the present embodiment will be described below in detail together with the respective components and functions of these vehicles.

(Characteristic and state analysis before process start)

In carrying out the process according to the present embodiment, a sample of the asphalt mixture of the existing pavement to be constructed is sampled before the start of the process, the density of the asphalt mixture, the amount of asphalt, the particle size of the aggregate, the type of asphalt, Investigate and analyze intrusions and softening points. At the same time, when the asphalt mixture layer after regeneration satisfies a predetermined performance, and when the asphalt mixture layer after regeneration is made into the drainage intervening asphalt mixture layer, the permeability coefficient of the intervening asphalt mixture layer becomes a desired value. The number of particle size groups to be classified, the particle size of each particle size group, the amount and ratio of aggregates in each particle size group, the amount of new material added, the amount of additives for regeneration such as softener, and the amount of new asphalt added as a modifier are determined.

(Preheater vehicle)

9 shows the preheater vehicle 100 according to the present embodiment.

The preheater vehicle 100 is a vehicle for performing the heat softening process diagram of FIG. 7. In the present embodiment, two of these preheater vehicles 100 are used. Each preheater vehicle 100 has three heaters 110, 120, 130 for softening the asphalt mixture layer of the existing pavement.

One of the features of the present invention is to mix the asphalt mixture layer of the existing pavement by dividing the asphalt mixture layer of the existing pavement by the autonomous vehicle system continuously moving at the construction site and to install the broken asphalt mixture in the formulation design vehicle 300 on the system. The discrimination part of the design apparatus 310 can classify on the road to aggregate of several desired particle size groups. However, the asphalt mixture of only the excavated, as described above, is in a state in which aggregates coated on asphalt as a binder are connected to each other, that is, in a state of agglomerated granulation, so that the sieve of the blending design device 310 is left as it is. Without properly passing through, it cannot be classified as aggregate of the desired particle size. In order to allow the crushed asphalt mixture to properly pass through the sieve, as shown in FIG. 6, the temperature of the crushed asphalt mixture (old material) is about 90 ° C to about 150 ° C, preferably about 120 ° C. It is necessary to reduce the viscosity of the asphalt of the asphalt mixture, thereby to maintain the asphalt mixture at a temperature not to be agglomerated and to finely granulate it (fine granulated asphalt mixture).

In the preheater vehicle 100, the asphalt mixture layer is heated to a temperature necessary for making the asphalt mixture into fine granulated asphalt mixture in this way, and at the same time, the preheater vehicle 100 does not crush the aggregates contained in the asphalt mixture layer. Heaters 110, 120, and 130 for softening this asphalt mixture are installed to face the surface of this asphalt mixture layer to facilitate application. Each of the heating devices 110, 120, 130 installed in the preheater vehicle 100 is provided with a burner and a heater bed 112 provided below the heating devices 110, 120, 130 and having a plurality of nozzles. 122, 132) and one or more blowers. The hot air heated by the burners 111, 121, and 131 is discharged from a plurality of nozzles at a temperature determined by the construction conditions, for example, about 500 ° C to about 700 ° C, preferably about 600 ° C. The plurality of nozzles are disposed in the heater beds 112, 122, and 132 to face the asphalt mixture layer surface, and the bottom surface of the plurality of nozzles is about 25 mm to about 150 mm upward from the asphalt mixture layer surface, more preferably. Preferably it is located at a height of about 50mm to about 120mm, most preferably about 70mm to about 100mm. The travel direction length of each heater bed 112, 122, 132 of the heating apparatus 110, 120, 130 is about 3,000 mm. The hot air discharged from the plurality of nozzles is sprayed onto the surface of the asphalt mixture layer, recovered by one or more blowers, and heated again by a burner, and discharged from the plurality of nozzles.

The hot air discharged from the plurality of nozzles has a surface temperature of about 250 ° C. or less, preferably about 230 ° C. or less, by adjusting the traveling speed, that is, the construction speed, and the discharged hot air temperature of the vehicle. The surface of this asphalt mixture layer is sprayed so that the temperature of the position of about 40 mm below the surface of this asphalt mixture layer is about 60 degreeC or more, preferably about 80 degreeC or more. By heating the asphalt mixture layer by blowing hot air under such temperature control, the asphalt mixture when it is dug into the below-described Miller vehicle 200 while aggravating the quality of the asphalt mixture layer surface by crushing or overheating is minimized. The temperature of this asphalt mixture layer is efficiently raised so as to be maintained at a temperature not to be granulated, so as to be a temperature necessary for fine granulation, and in the subsequent step, the asphalt mixture layer is crushed with little destruction of aggregate. The asphalt mixture layer can be softened efficiently to facilitate the The plurality of nozzles are covered by the covers of the heater beds 112, 122, 132, whereby hot air sprayed from the plurality of nozzles and sprayed onto the surface of the asphalt mixture layer is at least omitted from the outside of the cover. It is possible to recover efficiently with a blower. In addition, the hot air does not leak to the outside of the cover, so that work can be carried out without adversely affecting the plants or the like even in a construction site or the like where plants and the like are adjacent to the road.

In the present embodiment, two preheater vehicles 100 are used, and three heaters 110, 120, and 130 are mounted in each of the preheater vehicles 100, respectively. Such a configuration is achieved by intermittently heating the plurality of heaters 110, 120, and 130 of the plurality of preheater vehicles without intermittently heating the surface of the asphalt mixture layer, thereby reducing the temperature of the surface and overheating. This is because efficient heat input into the interior of this asphalt mixture layer is possible while preventing deterioration due to this. Thus, the combination of the number of preheater vehicles and heaters can reduce the temperature of the surface of the asphalt mixture layer and deterioration due to overheating, while maintaining the temperature at a position of about 40 mm below the surface of about 60 ° C. or higher, preferably about What is necessary is just to be able to raise to 80 degreeC or more efficiently, for example, to make two or more preheater vehicles, and to mount a heating apparatus to this vehicle one by one, or two or more to one preheater vehicle. You may change it in various ways, for example, to mount a heating apparatus.

In the present embodiment, as the heating devices 110, 120, 130 of the preheater vehicle 100, hot air heaters that use hot air heated by a burner and heat the asphalt mixture layer are used. However, the heating apparatus can properly soften the asphalt mixture layer, for example, an apparatus for heating using an infrared heater, a microwave heater, or a direct heating heater, or a device for heating using a combination thereof, in addition to the hot air heater. Is good.

The working width capable of blowing hot air can vary from about 3,000 mm to about 4,500 mm in a direction perpendicular to the traveling direction of the preheater vehicle 100. The change of the working width is made by a structure in which the heater beds 112, 122, and 132 having a plurality of nozzles can be accommodated in the lower part of the preheater vehicle 100, and stretched by taking it out appropriately according to the working width. It can be realized. The method of changing the working width can be appropriately changed in accordance with the construction conditions such as an attachment method in which a heater bed having a plurality of nozzles is attached to the preheater vehicle side at the time of work, in addition to the above-mentioned stretching method. Any way is good.

In addition, since the present self-propelled vehicle system can move the autonomous vehicle system automatically controlled at an average speed of 4 to 5 m per minute, as in the above-described AR2000 manufactured and sold by the present applicant, each of the vehicles constituting the system includes: It is equipped with the necessary equipment such as power supply and steering system. However, the entire self-propelled vehicle system may be arranged to be towed by a trailer disposed in front of the preheater vehicle 100 and connected to the vehicle 100. In this case, each of the vehicles is not equipped with a device necessary for power supply such as a power unit, and other devices constituting each of the vehicles are mounted on a chassis which does not have a device required for power supply such as a power unit. You may make it drive. Moreover, each of the vehicles of the self-propelled vehicle system is equipped with a control device for controlling all or part of the devices mounted on each of the vehicles, and by this control device, a device mounted on each of the vehicles is provided. Although each of these devices can be controlled independently or simultaneously, it is also possible to operate each of the devices independently or all of the devices simultaneously and manually without mounting such a control device.

(Miller vehicle)

10 shows a miller vehicle 200 according to the present embodiment. The miller vehicle 200 is a vehicle for performing the digging and fine granulation process of FIG. 7. The miller vehicle 200 is continuously heated by one heater 210 for continuously heating the asphalt mixture layer of the existing pavement road that has been softened by the preheater vehicle 100, and continuously heated by the heater 210. Two grinder devices 220 for digging up the asphalt mixture layer and a new asphalt mixture (hereinafter referred to as new material) brought in from outside the present self-propelled vehicle system are received and conveyed to the subsequent compound design vehicle 300. A group of import / conveyors 231 and 232 are provided.

As described above, the asphalt mixture layer heat-softened by the preheater vehicle 100 is smashed by the grinder devices 221 and 222 of the Miller vehicle 200, and the smashed asphalt mixture is then added to the subsequent formulation design vehicle ( 300 is classified and weighed by the formulation design device 310 of. In order to properly classify the mixing design device 310 into aggregates having a desired particle size, the temperature of the asphalt mixture introduced into the mixing design device 310 is about 90 ° C to about 150 ° C, preferably about 120 ° C. It is necessary to put. In the self-propelled vehicle system, the asphalt mixture layer before being dug is heated by the heater of the preheater vehicle 100 so that the entire asphalt mixture after being dug is generally at the above temperature. However, since there is a certain distance between the preheater vehicle 100 and the Miller vehicle 200, after heating the asphalt mixture layer with the preheater vehicle 100, until the digging with the Miller vehicle 200. In the meantime, the surface temperature of the heated asphalt mixture layer goes down. Depending on the construction conditions such as the external air temperature, even though the temperature in the asphalt mixture layer is a desired temperature, the surface temperature is remarkably reduced during this time, and in such a state, the temperature of the entire asphalt mixture that is dug up is aggregated and granulated. It is difficult to keep at a temperature that does not.

So, in this embodiment, the heating apparatus 210 is provided in the front part of the grinder apparatus 221 of the Miller vehicle 200 so that the surface of the asphalt mixture layer may be replaced, and it heats by the preheater vehicle 100. FIG. The surface of the softened asphalt mixture layer is continuously heated to keep the temperature of the asphalt mixture after digging to the temperature at which the aggregated particles do not become aggregated. The heating apparatus 210 of the miller vehicle 200 is the same apparatus as the heating apparatus 110, 120, 130 of the preheater vehicle 100, and uses a hot air heater in this embodiment. However, the heating device may be another device capable of keeping the asphalt mixture layer at a temperature at which the asphalt mixture layer is not coagulated, such as an infrared heater, a microwave heater, a direct heater, or a combination thereof. The bottom surface of the heater 210 disposed facing the asphalt mixture layer surface is about 25 mm to about 150 mm, more preferably about 50 mm to about 120 mm, most preferably about 70 mm to the top of the asphalt mixture layer surface. It is located at a height of about 100mm.

When the system is stopped due to a failure occurring in all or part of the self-propelled vehicle system, the temperature of the asphalt mixture layer heated by the preheater vehicle 100 rapidly decreases. In such a case, even if the system recovers and restarts the construction, it may be impossible to maintain the smashed asphalt mixture at a temperature at which the granulated asphalt mixture is not aggregated. Thus, the heating device 210 of the Miller vehicle 200 also serves as an emergency heating device for rapidly re-raising the temperature of the asphalt mixture layer before being dug in this case.

In the present embodiment, the heating device 210 is provided at the front of the grinder device 221 of the mirror vehicle 200 so that the asphalt mixture layer is heated until just before digging so that the asphalt mixture layer is kept at a constant temperature. However, the heating device 210 may be provided at the rear portion of the grinder device 222 of the mirror vehicle 200 and the asphalt mixture after digging is heated to maintain the asphalt mixture at a temperature at which the aggregated particles are not aggregated. In addition, in this embodiment, although there is one heating apparatus mounted in the Miller vehicle 200, you may provide two or more heating apparatuses if it is allowed on a mechanism.

Asphalt mixture layer heated and softened by the preheater vehicle 100 and continuously heated by the heating apparatus 210 of the Miller vehicle 200 is two grinder apparatuses 221 installed in the lower part of this Miller vehicle 200. 222 is operated at a cutting speed corresponding to the moving speed of the present self-propelled vehicle system, thereby digging to a desired depth according to the road surface properties and conditions. By digging the asphalt mixture layer whose surface temperature is about 230 degreeC and the position of about 40 mm below the surface about 80 degreeC in this way, about 90 degreeC-which is the temperature which the whole dished asphalt mixture does not become agglomerated granulation, It is maintained at about 150 ° C., preferably about 120 ° C., to form a finely granulated asphalt mixture. In the present embodiment, the grinder apparatuses 221 and 222 use drum cutters, but other apparatuses capable of digging the asphalt mixture layer at a predetermined cutting depth, cutting width, and cutting speed may be used. The cutting width is varied between about 3,000 mm and about 4,500 mm by stretching the grinder device 221, 222 in its axial direction by means of an apparatus such as AR2000, which is manufactured and sold by the applicants.

Although two grinder devices 221 and 222 are mounted back and forth in the longitudinal direction of the Miller vehicle 200 in the present embodiment, only one grinder device can be provided if the desired cutting depth, cutting width, and cutting speed can be maintained. Alternatively, two may be three or more cases when the desired cutting depth, cutting width, and cutting speed cannot be maintained. In addition, the asphalt mixture dug by the grinder devices 221 and 222 may be integrated in the shape of a field in the center part of the road width for the purpose of facilitating the handling in a later step. In this case, the grinder device 222 In the rear portion of the), a device capable of integrating a broken asphalt mixture, such as a braid, may be provided.

In this method, a new asphalt mixture (new material) is added to an asphalt mixture of an existing pavement, for example, for the purpose of adjusting the particle size, asphalt amount, strength, and function of the aggregate of the asphalt mixture of the recycled pavement. May be added to produce a recycled asphalt mixture. In the present embodiment, this new material is placed in the system from the outside of the self-propelled vehicle system, such as a truck loaded with the new material, inside the system, and when the loaded new material is removed from the imported vehicle, the imported vehicle is seen. Falling out of the vehicle system, the same or other import vehicle with new new material is then brought back into the present self-propelled vehicle system. The position where the imported vehicle loaded with the new material is placed is the position before the asphalt mixture layer is crushed by the grinder devices 221 and 222, that is, the miller vehicle so that the broken asphalt mixture is not affected by the running of the imported vehicle. It is preferable that it is before (200). Therefore, in the Miller vehicle 200, the new material is received from the bring-in vehicle at the front of the Miller vehicle 200, the new material received is conveyed, and the compounding is subsequently performed at the rear of the Miller vehicle 200. The storage / conveying devices 231 and 232 which are exchanged to the design vehicle 300 are installed. In this way, the new material brought into the self-propelled vehicle system is added in the mixing apparatus 320 and / or the hearth of the compound design vehicle 300 which follows the Miller vehicle 200.

In this embodiment, a hopper is provided in the front part of the miller vehicle 200 as the storage part 231 of this storage / conveying apparatus. The new material accommodated in the storage unit 231 is provided with a conveying unit continuous to the storage unit 231 and a subsequent compounding design vehicle 300 to receive the new material discharged from the storage unit 231. It is conveyed to this compound design vehicle 300 by the conveying apparatus 232 containing the delivery part arrange | positioned so that the transfer of new material may be possible. In this embodiment, although the belt conveyor is used as the conveying apparatus 232, in addition to a belt conveyor, new material is received from the accommodating part 231, such as a bar feeder, a slat conveyor, or a screw, for example. What is necessary is just an apparatus which can send and receive to the following compound design vehicle 300.

In order to insulate the new material at a temperature that does not become agglomerated until it is added to the asphalt mixture in the next step, the conveying device 232 includes the new material to be conveyed at about 140 ° C to about 180 ° C, preferably It is desirable to provide a thermal insulation device for thermal insulation at about 160 ° C. Although this heat insulating device covers the whole conveying apparatus 232 with a cover, it can be set as the apparatus which heat-insulates the new material which moves on this conveying apparatus 232 using a simple and convenient burner, For example, a conveying apparatus ( What is necessary is just an apparatus which can heat | maintain the new material in conveyance suitably, such as heating 232) with the said heater. In addition, the vehicle system includes, for example, the above-mentioned conveying apparatus 232 for conveying new materials, for example, an apparatus 332 for conveying a broken asphalt mixture, and an apparatus 340 for conveying classified recycled aggregates and the like. Although several conveying apparatuses, such as), are installed, it is preferable to install a heating apparatus in all or one part of such conveying apparatuses, and to keep the material conveyed.

In the present embodiment, as described above, the storage unit 231 is disposed at the front of the mirror vehicle 200, and the new material is stored from a carry-on vehicle such as a truck placed in front of the mirror vehicle 200. To 231. However, the new material is supplied from the imported vehicle to the storage unit 231 of the Miller vehicle 200 while the new vehicle is not placed in the self-propelled vehicle system, but is placed in parallel with the self-propelled vehicle system. It may be. In addition, instead of the front part of the miller vehicle 200, the accommodating part 231 of a new material is not the front part of the compound design vehicle 300, or this mirror vehicle 200 or any of this compound design vehicle 300. It may be provided in the side part, and new material may be supplied from the imported vehicle which co-operates with this independent vehicle system.

(Combination design vehicle)

11 shows the compound design vehicle 300 according to the present embodiment. The compound design vehicle 300 performs the discrimination process, the compound design process, and the second mixing process of FIG. 7, and a new material addition process, a regeneration additive addition process, and / or a new asphalt addition process as necessary. For the vehicle. The blending design vehicle 300 is successively connected to a group of up / down apparatuses 330 for picking up and conveying the finely granulated asphalt mixture which is dug and maintained at a temperature which does not become aggregated and granulated. A blending design including a discriminating section for classifying the finely granulated asphalt mixture into three granular aggregates and a metering section for measuring each of the three granular aggregates (hereinafter referred to as recycled aggregates) classified by the discriminating section. A device 310 and a portion of the blended designed recycled aggregate and one mixing device 320 for uniformly mixing the new asphalt as regeneration additives and / or modifiers, such as new materials, softeners, etc., added as needed. Subsequently, one conveying apparatus 340 for conveying a part of the blended designed recycled aggregate to the mixing apparatus 320 is provided in succession to the blending designing apparatus 310.

The compound design vehicle 300 further receives the new material from the conveying device in succession to the conveying device 232 of the Miller vehicle 200, and receives the new material received above the mixing device 320 of the compound design vehicle 300. Storage for regeneration additives, such as softeners, which are conveyed to and added to the group of storage / convey / discharge devices 351, 352, 353 and the second reclaimed asphalt mixture discharged to the openings above the mixing device 320. A portion 361 and a reservoir 362 for the new asphalt as a modifier. The compound design vehicle 300 stores unused recycled aggregates among the recycled aggregates classified by the discriminating unit of the blending design device 310 and discharges the stored unused recycled aggregates out of the self-propelled vehicle system viewed from the storage device. It is desirable to have a group of storage devices and conveying devices.

The finely granulated asphalt mixture which is dug by the Miller vehicle 200 and maintained at about 90 ° C. to about 150 ° C., preferably about 120 ° C., which is not agglomerated and granulated, is still on the road at the time of the dug. . The fine granulated asphalt mixture placed on the road is picked up by the pick-up device 331 mounted on the front of the compound design vehicle 300, and the conveying device 332 is continuous to the pick-up device 331. By this, it is conveyed to the inlet of the discrimination part of the mix design device 310 continuous to this conveying apparatus 332. In this embodiment, an auger for reliably picking up the fine granulated asphalt mixture and a slat conveyor and a conveyor following it are provided in the front of the compound design vehicle 300 as the pick-up / conveying device 330 for this purpose. . In addition to the auger, there is also a function of further agitation of the finely granulated asphalt mixture, whereby the mixture is maintained at a temperature at which the mixture is not agglomerated. In addition, what is necessary is just to be able to convey the fine granulated asphalt mixture put on the furnace to the inlet of the discrimination part of the mixing design device 310 other than an auger, a slat conveyor, and a conveyor.

When reproducing the dense asphalt mixture layer of the existing pavement into the infiltration particle size asphalt mixture layer, the following method is used. First, the finely granulated asphalt mixture which is dug out of the existing pavement and kept at a temperature that does not become agglomerated and granulated is classified into three aggregated recycled aggregates, that is, aggregates having a particle size of 5 mm or less (hereinafter referred to as recycled fine aggregate). And aggregates having a particle size of 5 mm or more and 13 mm or less (hereinafter referred to as regenerated aggregate) and aggregates having a particle size of 13 mm or more and 20 mm or less (hereinafter referred to as regenerated aggregate). Next, the sorted recycled aggregates are weighed, and the recycled additives such as recycled fine aggregates and softeners are recycled to two particle sizes of recycled aggregates, ie recycled fine aggregates and crude crude aggregates, if necessary. Or adding fresh asphalt as a modifier to uniformly mix and produce a first recycled asphalt mixture constituting the lower layer of the recycled asphalt mixture layer. As described above, the first recycled asphalt mixture has a small weight ratio of the recycled coarse aggregate to the recycled fine aggregate, for example, about 30% or less, so that the finely regenerated fine aggregate is densely filled in the voids between the recycled coarse aggregates. This results in an impermeable asphalt mixture having a low porosity. On the other hand, to the recycled aggregates of the classified and measured recycled aggregates, new asphalt is added and added uniformly as regeneration additives and / or modifiers, such as new materials and softeners, if necessary, uniformly mixed, and constitutes the upper layer of the recycled asphalt mixture layer. To produce a second recycled asphalt mixture. Since the second recycled asphalt mixture does not contain fine aggregate, the second recycled asphalt mixture has a particle size distribution in which voids occur between the aggregates, and thus the penetration particle size asphalt mixture. Finally, the first reclaimed asphalt mixture is laid out and spread on the furnace, compressed, and the second reclaimed asphalt is laid out, spreaded, and compressed, thereby finally obtaining a drainable asphalt mixture layer.

In order to obtain the asphalt mixture which comprises the drainage asphalt mixture layer recycled by such a method, the formulation design apparatus 310 mounted in the formulation design vehicle 300 is based on the result of a prior property and the state analysis, and a fine particle is carried out. The asphalt mixture is classified into three aggregated reclaimed aggregates and weighed to provide a blending design. In the present embodiment, the blending design device 310 includes a discriminating unit having three types of sieves of a sieve and a vibrating mechanism for vibrating the sieve, and a measuring unit for measuring each of the recycled aggregate classified by the discriminating unit. And a sieve cleaner that prevents clogging of the sieve. The discriminating unit is a device for classifying the finely granulated asphalt mixture maintained at a temperature that is not agglomerated into three kinds of regenerated aggregates, namely regenerated fine aggregates, regenerated aggregates, and reclaimed aggregates, using three kinds of sieves. The whole body vibrates by the vibration mechanism. Each of the three types of sieves is installed at an angle, and arranged so that the sieve network becomes fine in order from the above discrimination to the following discrimination. Each mesh of the sieves is 13mm, 10mm, 5mm in order from above. The fine granulated asphalt mixture introduced from the input port of the discriminating unit is classified into aggregates of 13 mm or more and aggregates of 13 mm or less by first discrimination. Aggregate 13 mm or more which does not pass this 1st sieve becomes a recycled crude aggregate. Next, the aggregate of 13 mm or less that passed through the first sieve is classified into aggregate of 10 mm or more and aggregate of 10 mm or less by the second discrimination, and the aggregate of 10 mm or less that passed through the second sieve is the third. By differentiation, it is classified into aggregate of 5 mm or more and aggregate of 5 mm or less. Aggregates that did not pass through the second and third sieves become recycled aggregates. Theoretically, two types of sieves, 13 mm and 5 mm, should be used to classify three granules, but when the aggregate of 13 mm or less is classified into one 5 mm sieve, the burden on the sieve increases and the asphalt adhesion of the sieve increases. It may become impossible to classify properly. Therefore, in this embodiment, the sieve of a 10 mm sieve is added in the middle, and load distribution is aimed at. Finally, the aggregate passed through the third sieve becomes a recycled fine aggregate of 5 mm or less. Passing through the 3rd sieve includes the asphalt of the existing pavement which the viscosity fell and became the fluid state with the aggregate of 5 mm or less. The discrimination ability of the discriminating unit can be changed in accordance with the moving speed (working speed) of the present self-propelled vehicle system. The regenerated fine aggregate, regenerated crude aggregate, and regenerated aggregate aggregate classified by the discriminating unit are each weighed by the metering unit of the blending designing device 310 to be blended and designed.

In addition, the excavated asphalt mixture can be screened only by maintaining the temperature at about 90 ° C to about 150 ° C, preferably about 120 ° C, which is a temperature at which the particles are not agglomerated and granulated. However, in order to make the asphalt mixture slip well and reduce friction with the sieve so that it can be properly classified even at a lower temperature, an additive for improving the sliding of the asphalt mixture may be added to the broken asphalt mixture.

In this embodiment, three sieves are used to classify the fine granulated asphalt mixture into the aggregates of the three particle sizes. However, this shows a preferred example, and the number of particle sizes to be classified is not limited to this, and the number of sieves is arbitrarily changed so that the finely granulated asphalt mixture can satisfy the quality required for the final asphalt mixture layer. You may classify into the particle size which can be mix-designed. For example, by using only one sieve, the fine granulated asphalt mixture is classified into two particle sizes, that is, recycled aggregate and recycled fine aggregate, of which only the recycled fine aggregate is used to produce the first recycled asphalt mixture, and only recycled aggregate is used. May be used to produce a second recycled asphalt mixture. Alternatively, three or more sieves may be used to classify the fine granulated asphalt mixture into four or more particle size recycled aggregates, and the recycled aggregates may be combined to achieve the desired quality of the asphalt mixture.

In addition, in this embodiment, although three particle sizes were 5 mm or less, 5 mm or more, 13 mm or less, and 13 mm or more, respectively, this also showed the preferable example similarly, It is not limited to this, and it is not limited to this. The size may be changed so as to obtain a recycled aggregate having a particle size different from that of the recycled aggregate of the present embodiment.

Even if the finely granulated asphalt mixture to be classified decreases in viscosity due to heating, the fine granulated asphalt mixture gradually adheres to the sieve network as the differentiation time increases, which may cause the sieve performance to decrease. In order to prevent the fall of this sieve performance, it is preferable to provide a sieve cleaner in the compounding design apparatus 310. The sieve cleaner prevents clogging of the sieve network when the rod disposed on the sieve surface is shaken by the vibration of the sieve itself, but the mechanism of the sieve cleaner is not limited to this, for example, by shaking the brush What is necessary is just to be able to prevent clogging of a sieve suitably, such as a mechanism which prevents clogging. Moreover, although the discriminating part is made into the vibration sieve provided with a vibration mechanism, what is necessary is just a mechanism which can classify the fine granulated asphalt mixture precisely also in addition to a vibration sieve.

The recycled fine aggregate and the recycled aggregate in the three particle size recycled aggregates classified by the discriminating portion of the compounding design device 310 are weighed out in the metering unit and then discharged from the lower portion of the compounding design device 310 and placed on the road. do. The regenerated fine aggregate and the reclaimed aggregate aggregate placed on the road are received by the mixing apparatus 410 via a storage opening 411 in front of the mixing apparatus 410 of the mixer vehicle 400, and added as needed, It is mixed uniformly with the regeneration additive and / or fresh asphalt, resulting in a first reclaimed asphalt mixture. In this embodiment, although the fine recycling aggregate and the recycled aggregate which comprise a 1st recycled asphalt mixture are sent to the mixing apparatus 410 of the mixer vehicle 400 from the hearth, it is continuous to the mixing design apparatus 310 Another conveying apparatus may be provided in the mixing design vehicle 300, and the conveying apparatus connected to this conveying apparatus may be provided in this mixer vehicle 400, and may be conveyed to this mixing apparatus 410. FIG.

The recycled aggregate among the three particle size recycled aggregates classified by the discriminating portion of the compounding design device 310 is weighed in the metering unit and then discharged from the rear portion or the lower portion of the compounding design device 310. The discharged regenerated aggregate is conveyed to the upper side of the mixing device 320 of the compound setting system 300 by the conveying device 340 connected to the compounding design device 310, and is installed above the mixing device 320. It is carried in the opening part, and it mixes uniformly in this mixing apparatus 320, and becomes a 2nd recycled asphalt mixture. In this embodiment, although this conveying apparatus 340 is a belt conveyor, the mixing apparatus of the mixing design vehicle 300 made of recycled aggregates, such as a bar feeder, a slat conveyor, or a screw, at a desired conveyance speed ( What is necessary is just an apparatus which can convey to the opening part of 320). In addition, in this embodiment, although the mixing apparatus 320 for producing | generating a 2nd recycled asphalt mixture uses a pug mill mixer, this mixing apparatus 320 is a recycled aggregate and the new material added as needed, What is necessary is just the apparatus which can mix a new asphalt uniformly as regeneration additives, such as a softening agent, and / or a modifier. In addition, the opening part of the mixing apparatus 320 is not limited to the upper part of this mixing apparatus, You may provide in the front part or the side part of this mixing apparatus.

In the present embodiment, the recycled fine aggregate and the recycled aggregate are uniformly mixed to produce the first recycled asphalt mixture. However, the recycled fine aggregate may be generated using only part or all of the recycled fine aggregate in the two particle sizes. . In this case, some of the unused recycled aggregate and recycled fine aggregate are taken out of the present self-propelled vehicle system via the unused recycled aggregate storage unit and used for other purposes, or part or all of them as aggregate of the second recycled asphalt mixture. It is available. In the present embodiment, the second recycled asphalt mixture is produced using the recycled aggregate, but the second recycled asphalt mixture may be produced using only the recycled aggregate, not the recycled aggregate.

The mixing device 320 of the mixing design vehicle 300 and the conveying device 340 for conveying the recycled aggregate discharged from the mixing design device 310 to the opening of the mixing device 320 provide a recycled asphalt mixture layer. If it is not necessary to have a two-layer structure, for example, the pavement road density asphalt mixture layer, the intervening asphalt mixture layer, or other asphalt mixture layers are dug up and all or part of the dug asphalt mixture is redesigned. It may not be used, for example, in the case of using the reclaimed asphalt mixture layer of one layer. In such a case, the mixing design device 310 is classified as necessary, and the weighed recycled aggregate is discharged from the mixing design device 310 and placed on the furnace. The additive and / or the new asphalt are uniformly mixed using only the mixing device 410 of the mixer vehicle 400 described below to form one kind of recycled asphalt mixture.

In this method, a new asphalt mixture is added to the second recycled asphalt mixture on the basis of the results of previous properties and condition analysis for adjusting the particle size of the second recycled asphalt mixture, adjusting the strength of the asphalt mixture layer, or adding a function. (New material) may be added. This new material is conveyed to the rear end of this Miller vehicle 200 by the conveying apparatus 232 provided in the Miller vehicle 200. The compounding design vehicle 300 passes through the new material storage device 351 connected to the conveying device 232 and the upper portion of the compounding design device 310 at the front of the compounding design vehicle 300 to designate this compounding design. The new material conveying apparatus 352 which reaches the rear part of the vehicle 300, and the discharge apparatus which is arrange | positioned at the rear end of this new material conveying apparatus 352, and discharges the new material conveyed by this new material conveying apparatus 352. Install (353). The new material is discharged from the discharge device 353, and the new material is put into the mixing device 320 provided below the discharge device 353. In the present embodiment, the new material storage / conveying / discharging devices 351, 352, and 353 of the compound design vehicle 300 are belt conveyors, but new materials such as bar feeders, slat conveyors, or screws are used. What is necessary is just an apparatus which can convey at a desired conveyance speed.

In the present embodiment, the new material is added to the second reclaimed asphalt mixture, but the new material is also added to the lower reclaimed asphalt mixture for the purpose of adjusting the particle size or strength of the reclaimed asphalt mixture layer, adding a function, and the like. It may add. When the reclaimed asphalt mixture layer does not need to have a two-layer structure, the new material may be added to the reclaimed aggregate that is discharged from the mixing design device 310 and disposed on the furnace. For this reason, a discharge device is provided in the middle of the new material conveying device 352 of the compounding design vehicle 300, and all or part of the new material conveyed by the conveying device is discharged from the discharge device, and the compounding is carried out. It may be added to the recycled aggregate discharged from the design apparatus 310 and disposed on the furnace.

Apart from new materials, new asphalt may be added to reclaimed aggregates as reclaimed additives such as softeners and / or modifiers based on the results of previous properties and condition analysis. The additive for regeneration is added for the purpose of adjusting the penetration of the asphalt mixture, restoring the properties and state of the deteriorated asphalt, and the new asphalt is used for the purpose of adjusting the strength of the asphalt mixture and preventing the scattering of aggregates. Is added. Regeneration additives include emulsions and oils, and the quality required for these is shown on page 221 of Non-Patent Document 1. In this embodiment, the storage part 361 for storing the regeneration additive and the storage part 362 for storing new asphalt are provided in the rear part of the compound design apparatus 310 of the compound design vehicle 300. Install. The additive for regeneration and / or the new asphalt stored in the storage parts 361 and 362 are added to the reclaimed aggregate on the conveying apparatus 340 which conveys the regenerated aggregate through the pipes extending from the reservoir, respectively. In addition, the position of the storage portion of the regeneration additive such as the softener and the new asphalt storage portion as the modifier is not limited to the rear portion of the mixing design device 310, and the aggregate and the new material added as necessary are mixed. In some places before uniform mixing at 320, a storage section may be provided at a position where reclaimable additives and / or new asphalt can be added. Therefore, in the case of the additive for regeneration, a storage part is installed in the rear part of the grinder apparatus 222 of the Miller vehicle 200, and / or in the vicinity of the mixing apparatus 320 of the compound design vehicle 300, From there, the additive for regeneration may be added to the asphalt mixture after being dug by the grinder apparatus 220, and / or the aggregate aggregate before mixing uniformly with the mixing apparatus 320 through piping. Moreover, in the case of new asphalt, the storage part is provided in the vicinity of the mixing apparatus 320 of the compound design vehicle 300, for example, and from there, through a piping, before mixing uniformly with this mixing apparatus 320. New asphalt may be added to the aggregate during regeneration.

For example, depending on the nature and condition of the asphalt mixture of the existing pavement or the desired property and condition of the asphalt mixture layer after regeneration, or when it is necessary to adjust the height of the pavement after regeneration, classified recycled aggregate Some or all of the recycled aggregates of any particle size or multiple particle sizes may not be used for the compounding design. In this case, there is a need to discharge unused recycled aggregate out of the present self-propelled vehicle system. In the present self-propelled vehicle system, it is preferable to provide a storage device and a conveying device for this purpose, to store the unused recycled aggregate in this storage device, and to carry out the stored recycled aggregate out of the present self-propelled vehicle system by the carrying out device.

(Mixer vehicle)

12 shows a mixer vehicle 400 according to the present embodiment. The mixer vehicle 400 is a vehicle for performing the first mixing step, spreading and compression process of FIG. 7, and the additive addition step for regeneration and / or the new asphalt addition step as needed. The mixer vehicle 400 is one unit for uniformly mixing the recycled fine aggregate and the recycled aggregate and the new asphalt as regeneration additives and / or modifiers such as new materials and softeners added as needed to produce the first recycled asphalt mixture. Mixing apparatus 410, a group of loading / transporting / discharging apparatuses 421, 422, and 423 continuous to the outlet of the rear portion of the mixing apparatus 320 of the compound design vehicle 300, and the first recycled asphalt mixture And two groups of spreading / compressing devices 430 and 440 for spreading and compressing the second recycled asphalt mixture, respectively, and a storage unit 451 for regenerating additives such as softener added to the recycled fine aggregate and the recycled aggregate. And a reservoir 452 for the new asphalt as a modifier.

The recycled fine aggregate and recycled aggregate aggregate and discharged from the lower portion of the mix design device 310 of the mix design vehicle 300 and the fresh material added as necessary are additives for regeneration such as softeners and / or modifiers as necessary. As new asphalt is added, it is received from an import port 411 installed to face the road surface in front of the mixing device 410 of the mixer vehicle 400. By uniformly mixing these in the mixing apparatus 410, the 1st recycled asphalt mixture which comprises the water impermeable layer of the lower part of a recycled asphalt mixture layer is produced | generated. In this embodiment, although the mixing apparatus 410 for producing this 1st recycled asphalt mixture uses a pug mill mixer, this mixing apparatus 410 is a recycled fine aggregate and recycled aggregate, and the new material added as needed. What is necessary is just an apparatus which can mix the additive for regeneration, and / or new asphalt uniformly. The first reclaimed asphalt mixture produced by the mixing device 410 is placed on the road in front of the front spreading / compressing device 430 of the two groups of spreading / compressing devices provided at the rear of the mixing device 410. do.

In order to carry in the mixer vehicle 400 the 2nd recycled asphalt mixture produced | generated in the mix design vehicle 300, this mixer vehicle 400 is continuous with the discharge port of the mixing apparatus 320 of this mix design vehicle 300. The loading device 421 is installed. The second reclaimed asphalt mixture carried in from the front of the mixer vehicle 400 by the loading device 421 is conveyed by the conveying device 422, and the upper portion of the mixing device 410 of the mixer vehicle 400 is moved. After passing, it is arrange | positioned in front of the back spreader / compressor 440 of 2 groups of spreader / compressors provided in the back part of this mixing apparatus 410 on the furnace. In this embodiment, this conveying apparatus is a belt conveyor, but recycled aggregates, such as a bar feeder, a slat conveyor, or a screw, are made at a desired conveyance speed, for example. What is necessary is just an apparatus which can be conveyed.

The regenerated fine aggregate and the regenerated coarse aggregate constituting the first regenerated asphalt mixture are the same as those of the regenerated aggregate constituting the second regenerated asphalt mixture, based on the results of previous properties and condition analysis. And / or fresh asphalt may be added as a modifier. In this embodiment, the storage part 451 for storing a regeneration additive and the storage part 452 for storing new asphalt are provided in the front part of the mixing apparatus 410 of the mixer vehicle 400. . Regeneration additives and / or new asphalt stored in the storage sections 451 and 452 pass through pipes extending from the storage section, respectively, and are added to the regenerated fine aggregate and the reclaimed aggregate aggregate disposed on the furnace. In addition, the position of the storage portion of the regeneration additive such as a softener and the new asphalt storage portion as the modifier is not limited to the front portion of the mixing apparatus 410, and the regenerated fine aggregate and the reclaimed aggregate and the new material added as needed are the mixing apparatus. At any place before the mixture is uniformly mixed at 410, the storage unit may be provided at a position where the additive for regeneration and / or new asphalt can be added. Thus, in the case of the additive for regeneration, the storage part is, for example, the rear part of the grinder device 222 of the Miller vehicle 200, the rear part of the compounding design device 310 of the compounding design vehicle 300 and / or the compounding part. It is installed in the vicinity of the mixing device 320 of the design vehicle 300, and classified thereafter by the asphalt mixture and / or the compounding design device 310 which were dug by the grinder device 220 through piping. The additive for regeneration may be added to the reclaimed crude aggregate and the regenerated fine aggregate after being weighed. In the case of new asphalt, for example, the storage unit is installed in the rear of the compounding design device 310 of the compounding design vehicle 300 and / or in the vicinity of the mixing device 320 of the compounding design vehicle 300. In addition, new asphalt may be added to the reclaimed crude aggregate and the regenerated fine aggregate after being classified and measured by the blending designing apparatus 310 through the piping therefrom.

Both the first reclaimed asphalt mixture and the second reclaimed asphalt mixture disposed on the road are arranged in the vicinity of the hearth center portion of the working width, and the two groups of spreading / compression are provided at the rear part of the mixing device 410 of the mixer vehicle 400. The apparatuses 430 and 440 are dug up to a predetermined width, and then spread and compressed. The two groups of spreading / compressing devices 430 and 440 are each constituted by a group of augers 431 and 441 and screeds 432 and 442, respectively. The first reclaimed asphalt mixture disposed on the road is firstly dug up to a predetermined width by the auger 431 of the front spreading / compressing device 430 among the two spreading / compressing devices, After application, it is compressed by the screed 432 provided in the rear part of the auger 431, and forms the 1st recycled asphalt mixture layer. The second reclaimed asphalt mixture is placed on the road after the first reclaimed asphalt mixture is spread and compressed by the front spreader / compressor 430 among the two groups of spreader / compressors. The screed 442 provided in the rear part of the auger 441 after being spread out to a predetermined width by the auger 441 of the rear spreading / compressing device 440 among the applying / compressing devices. ), A second recycled asphalt mixture layer is formed. When the reclaimed asphalt mixture layer does not need to have a two-layer structure, only one of the two groups of spreading / compressing devices 430 and 440 may be used.

In the present embodiment, two groups of spreading / compressing apparatuses 430 and 440 are used, each of which has augers 431 and 441 as spreading portions and screed 432 as compression portion. 442). However, if the reclaimed asphalt mixture disposed on the road can be dug into a predetermined width and spread and compressed, the number of the spreading / compressing devices, the spreading portion constituting each of the spreading / compressing devices and You may change the number of compression parts in various ways.

The first recycled asphalt mixture layer and the second recycled asphalt mixture layer constituting the recycled asphalt mixture layer are spread and compressed by the apparatuses 430 and 440 to spread / compress the mixer vehicle 400. However, only the apparatuses 430 and 440 for spreading / compressing the mixer vehicle 400 are not completely compressed, but they cannot be shared as a recycled pavement as it is. Therefore, after compressing the first and second recycled asphalt mixture layers and the two groups of spreading / compressing devices 430 and 440 of the mixer vehicle 400, respectively, the two layers are simultaneously packed. Compression and final finishing as a reclaimed pavement. For this purpose, a device for compressing separately is placed in the rear of the mixer vehicle at the end of the present self-propelled vehicle system. The apparatus for compressing is also used in existing methods, and for example, a road roller, a tire roller, a vibration roller, or the like can be used.

Claims (31)

In the method of continuously regenerating the asphalt mixture layer on the pavement continuously on the road while moving the autonomous vehicle system, the asphalt mixture layer on the pavement continuously, a. Heat softening the asphalt mixture layer; b. Digging the hot-softened asphalt mixture layer, maintaining the temperature at a non-aggregated and granulated state, and providing a fine granulated asphalt mixture, c. A differentiation process for classifying the finely divided asphalt mixture into a plurality of particle size groups, d. Using each of the plurality of particle size classes classified and formulating the asphalt mixture into a recycled asphalt mixture, e. Uniformly mixing the recycled asphalt mixture with a mixing design; f. And spreading and compressing the uniformly mixed recycled asphalt mixture to form a recycled asphalt mixture layer. The method of claim 1, Digging the asphalt mixture layer and maintaining the temperature at a temperature not to be agglomerated and granulated to obtain a fine granulated asphalt mixture; And the step of formulating and designing the asphalt mixture into the recycled asphalt mixture using each of the plurality of classified particle sizes, A method of continuously regenerating a asphalt mixture layer on a pavement, characterized by further comprising adding a regeneration additive such as a softener. The method according to any one of claims 1 and 2, The process of using each of the classified plurality of particle size groups and designing the asphalt mixture into a recycled asphalt mixture includes storing and discharging unused particle size groups among the plurality of classified particle sizes. , A method for continuously regenerating a asphalt mixture layer on a pavement, characterized by discharging said stored unused particle size group from said autonomous vehicle system. The method of claim 1, Wherein the step of designing the asphalt mixture into the recycled asphalt mixture by using each of the classified plurality of particle size groups includes adding a new asphalt mixture (new material) to the mix-designed recycled asphalt mixture. Characterized in that the asphalt mixture layer of the pavement is continuously recycled on the road. The method of claim 4, wherein The process of adding a new asphalt mixture (new material) to the blended designed recycled asphalt mixture, adds new asphalt as a modifier to the recycled asphalt mixture to which this new asphalt mixture (new material) is added. And further comprising, continuously recycling the asphalt mixture layer on the pavement on the road. The method of claim 1, The step of spreading and compressing the uniformly mixed recycled asphalt mixture to form a recycled asphalt mixture layer includes spreading and compressing the uniformly mixed recycled asphalt mixture to upper and lower layers to form a two-layer structure. And the lower layer of the upper and lower layers is at least an impermeable recycled asphalt mixture layer. The asphalt mixture layer of the pavement is continuously recycled on the road to the granular asphalt mixture layer while the voluntary vehicle system is moved. In the way, a. Heat softening the asphalt mixture layer; b. Digging the heat-softened asphalt mixture layer and maintaining the temperature at a temperature not to be agglomerated and granulated to obtain a fine granulated asphalt mixture; c. A differentiation process of classifying the finely granulated asphalt mixture into a plurality of particle size groups, d. Using each of the plurality of particle size classes classified and formulating the asphalt mixture into a recycled asphalt mixture, e. Uniformly mixing the recycled asphalt mixture blended and designed; f. The process of mixing uniformly,  (a) uniformly mixing a part of the recycled asphalt mixture blended and designed to form a first recycled asphalt mixture constituting an impermeable recycled asphalt mixture,  (b) forming a second recycled asphalt mixture constituting an impervious recycled asphalt mixture by uniformly mixing all or a part of the remainder of the recycled asphalt mixture designed and blended, g. Spreading and compressing the first recycled asphalt mixture to form an impermeable recycled asphalt mixture layer; h. And spreading the second recycled asphalt mixture on the impermeable recycled asphalt mixture layer and compressing the second recycled asphalt mixture layer into an impermeable recycled asphalt mixture layer. A method of continuously regenerating from the hearth to the granular asphalt mixture layer. delete The method of claim 7, wherein Digging the hot-softened asphalt mixture layer and maintaining the temperature at a temperature not to be agglomerated and granulated to obtain a finely granulated asphalt mixture; And the step of formulating and designing the asphalt mixture into the recycled asphalt mixture using each of the plurality of classified particle sizes, A process for continuously regenerating an asphalt mixture layer of a pavement on an open particle asphalt mixture layer, characterized in that it further comprises adding a regeneration additive such as a softener. The method according to claim 7 or 9, The differentiating step of classifying the finely granulated asphalt mixture into a plurality of particle size groups comprises: dividing the finely granulated asphalt mixture into two groups, fine aggregate and coarse aggregate, or fine granules. A method for continuously regenerating an asphalt mixture layer of a pavement on an open particle asphalt mixture layer, characterized in that it is a differential process for classifying the aggregate into three groups: aggregate, medium aggregate, and crude aggregate. . The method of claim 7, wherein Wherein the process of designing the asphalt mixture into the recycled asphalt mixture using each of the classified plurality of particle size groups includes storing and discharging an unused particle size group among the plurality of classified particle sizes groups; And reclaiming the unused particle size group stored from the self-propelled vehicle system. The method of claim 7, wherein The process of blending and designing the asphalt mixture into the recycled asphalt mixture using each of the classified plurality of particle size groups is characterized by adding a new asphalt mixture (new material) to the blended designed recycled asphalt mixture. And regenerating the asphalt mixture layer of the pavement continuously on the road to the open particle asphalt mixture layer. The method of claim 12, The process of adding a new asphalt mixture (new material) to the blended designed recycled asphalt mixture also includes adding new asphalt as a modifier to the recycled asphalt mixture to which the new asphalt mixture (new material) is added. A method of continuously regenerating an asphalt mixture layer of a pavement road on an open-bed asphalt mixture layer. In a self-propelled vehicle system consisting of a preheater vehicle, a miller vehicle, a combination design vehicle, and a mixer vehicle, which continuously reproduces the asphalt mixture layer on the pavement while moving, a. A preheater vehicle provided with a device for heating and softening the asphalt mixture layer to face the road surface; b. Miller vehicle provided with a digging device which maintains the asphalt mixture layer heated and softened by the preheater vehicle at a temperature which does not become agglomerated granules to form a fine granulated asphalt mixture; c. In the front part of the apparatus for lifting and conveying the broken asphalt mixture, the discriminating unit for classifying the conveyed asphalt mixture to a plurality of particle size groups successively to the apparatus, and the plurality of particle size groups classified by the discriminating unit. A compound design vehicle provided with a compound design device for arranging all or a part of the plurality of classified particle size groups on the road surface, including a metering unit for measuring each of them; d. A pug mill which has an import port at the front and a discharge port at the rear, and accepts all or part of the plurality of particle size groups arranged on the road, uniformly mixes and discharges it. Consisting of a mixer vehicle provided with a mixing device such as The mixer vehicle comprises one or more augers and screeds to spread, compress and provide a reclaimed asphalt mixture layer of all or part of the plurality of particle groups that are uniformly mixed and discharged. Self-propelled vehicle system, characterized in that provided in the adjacent portion of the mixing device having a spreading and compressing device such as. The method of claim 14, The preheater vehicle comprising one or more vehicles, each having at least one or more heaters opposed to the asphalt mixture layer, to soften the asphalt mixture layer by heat. . The method according to any one of claims 14 and 15, And wherein the chamfering device of the miller vehicle comprises one or more grinder devices. The method of claim 14, The self-propelled vehicle, wherein the Miller vehicle is further provided at the front of the digging device so as to replace the asphalt mixture layer with a heating device that continuously heat-softens the asphalt mixture layer and heat-softens the asphalt mixture layer. system. The method of claim 14, The digging portion of the miller vehicle and a rear portion of the formulation design apparatus of the formulation design vehicle, or a front portion of the mixing apparatus of the mixer vehicle, with storage for regeneration additives such as softeners, And the regeneration additive such as a softener is added to the asphalt mixture that is dug by the digging device and the asphalt mixture that is classified and metered by the formulation design device. The method of claim 14, The Miller vehicle further includes an import conveying unit including an importing unit such as a hopper at the front, a conveying unit such as a conveyor at the top, and a conveying unit at the rear, and which does not aggregate into granular particles other than the independent vehicle system. A self-contained vehicle system, wherein a new asphalt mixture (new material) brought in at a temperature is received and conveyed to the compound design vehicle. The method of claim 14, The discriminating unit included in the blending design device of the blending design vehicle classifies the finely divided asphalt mixture into at least two aggregates of fine aggregates and coarse aggregates, or fine aggregates, medium aggregates and crude aggregates. An independent vehicle system, characterized in that it is a discriminating unit classified into three groups of aggregates. The method of claim 14, The metering unit included in the blending design device of the blending design vehicle is a metering unit for measuring each of the granularity groups classified into the plurality of granularity groups. The method of claim 14, The compound design vehicle further includes a storage device for storing an unused particle size group among the plurality of classified particle sizes, and discharges the stored unused particle size group from the storage device to the outside of the vehicle amount system. Independent vehicle systems. The method of claim 19, An import conveyance discharging apparatus which the compound design vehicle receives, conveys, and discharges the new asphalt mixture (new material) at a temperature which does not aggregate the new asphalt mixture (new material) from the import conveying apparatus of the Miller vehicle; The discharge portion of the front and rear comprises two discharge portions, from the front discharge portion, the new asphalt mixture (new material) is added to all or part of the plurality of particle size groups arranged on the road surface by the formulation design device, The self-propelled vehicle system characterized by the uniform mixing by the mixing device of the mixer vehicle. The method of claim 23, wherein The plurality of particle sizes arranged on the road surface by the blending design device of the blending design vehicle, wherein the mixer vehicle also has a reservoir such as a tank for storing new asphalt as a modifier in the front of the blending device of the vehicle. The new vehicle is added to all or part of the group, and the self-propelled vehicle system, characterized in that uniform mixing by the mixing device. The method according to claim 23 or 24, The compound design vehicle is classified and weighed between a mixing device such as a pug mill provided with an opening and a discharge port and the mixing device and the compound design device in the vicinity of the discharge unit behind the import conveyance discharge device of the vehicle. It is also equipped with a loading device, such as a conveyor, which receives and conveys a part of the plurality of particle size groups, and brings in a portion of the plurality of particle size groups from an opening of the mixing device, while the new asphalt A self-driving vehicle system, wherein a mixture (new material) is added and mixed uniformly by the mixing device. The method of claim 25, The compound design vehicle further includes a storage unit such as a tank for storing new asphalt as a modifier in the vicinity of the mixing apparatus of the vehicle, wherein the new vehicle is part of the plurality of particle size groups uniformly mixed by the mixing apparatus. Independent vehicle system, characterized in that the addition of asphalt. The method of claim 25, The mixing device of the blending design vehicle adds the new asphalt mixture (new material) and the new asphalt to some of the plurality of particle size groups that are classified and measured, uniformly mixes, and constitutes a second recycled asphalt mixture. Further, the mixing device of the mixer vehicle adds the new asphalt mixture (new material) and the new asphalt to all or a part of the remainder of the plurality of particle sizes classified and measured, and uniformly mixes the first. A self-propelled vehicle system comprising a recycled asphalt mixture. The method of claim 27, In the mixer vehicle, a device for straightening and compressing the first and second groups, such as two groups of augers and screeds, is installed at the rear of the mixing device. The spreading and compacting apparatus of the first group spreads and compresses the first recycled asphalt mixture to form a first recycled asphalt mixture layer, The spreading and compressing apparatus of the second group is spreading and compressing the second recycled asphalt mixture on the first recycled asphalt mixture layer to form a second recycled asphalt mixture layer, so that the recycled asphalt of the two-layer structure A self-propelled vehicle system, characterized by providing a mixture layer. The method of claim 28, At least the first reclaimed asphalt mixture layer is an impermeable reclaimed asphalt mixture layer. The method of claim 28, And the second recycled asphalt mixture layer is an intervening degree recycled asphalt mixture layer. The method of claim 26, The mixing device of the compound design vehicle adds the new asphalt mixture (new material) and the new asphalt to a part of the plurality of particle sizes classified and measured to uniformly mix and constitute a second recycled asphalt mixture. Further, the mixing device of the mixer vehicle adds the new asphalt mixture (new material) and the new asphalt to all or part of the remainder of the plurality of particle size groups that have been classified and measured, and uniformly mixes the first. A self-propelled vehicle system comprising a recycled asphalt mixture.

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