JP3190581B2 - High-functional asphalt pavement method and high-functional asphalt pavement structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an asphalt pavement method for spraying and compacting rubber particles on the surface of an asphalt pavement material, and an asphalt pavement structure obtained by the method. According to this asphalt pavement, it is possible to add or increase a low noise property of reducing traffic noise caused by a traffic vehicle, and in addition to the function originally possessed by the asphalt pavement, a thin frozen snow attached to snow or a pavement surface. The function of peeling a layer can be added or increased.

[0002]

2. Description of the Related Art In recent years, road pavements have been required to have a function of reducing traffic noise caused by traffic vehicles, that is, a so-called low noise property. However, as conventional low-noise asphalt pavement, for example, open-grain type pavement such as drainage pavement (“Asphalt pavement outline” (edited by the Japan Road Association) [revised edition on December 5, 1992]) There is only one that utilizes the low-noise properties of (described). In particular, asphalt pavement in winter snowy and cold regions is required to have a freeze suppression function. As a conventional anti-freezing pavement, there is a pavement in which an anti-freezing agent is mixed into a pavement.

[0003]

In order to achieve low noise of asphalt pavement, the present applicant has filed Japanese Patent Application No. Hei 7-330.
No. 445, in addition to the aggregate, filler and asphalt, asphalt pavement material obtained by further adding 1 to 10% by weight of rubber particles and mixing with a mixer, and having a porosity of 10 to 10.
A pavement structure adjusted to be 40% is proposed.
This pavement has the effect of reducing traffic noise. Furthermore, the present applicant has disclosed Japanese Patent Application Nos. 4-28087 and 4-28088 as measures against freezing of asphalt pavement.
No. 2 proposes an antifreeze pavement in which rubber particles are mixed into aggregates, fillers and asphalts as main constituent materials.

[0004] However, in recent years, the demand for low noise performance of asphalt pavement has become more severe. Also,
In particular, with regard to open-grain type pavement such as the drainage pavement described above, it is pointed out that in winter, weaknesses are exposed in winter, such as when the pavement surface is rough, the snow in the winter is hardly clogged and the snow is hard to melt, and the snow tends to freeze. In general, demands for measures against freezing of asphalt pavement have been increasing in recent years. Therefore, an object of the present invention is to provide an asphalt pavement having more excellent low-noise and freezing resistance based on the above-described conventional technology and the invention proposed by the present applicant.

[0005]

According to a first aspect of the present invention, there is provided a high-functional asphalt pavement method comprising: assembling an asphalt pavement material obtained by mixing an aggregate, a filler, asphalt and rubber particles; A high-performance asphalt pavement method , characterized in that rubber particles are sprayed on a pavement surface of the pavement and compacted by a compaction machine.
The weight ratio of the rubber particles in the asphalt pavement material is
1 to 10%, and the porosity of the pavement is 1 to 40%.
Rubber formed so as to be sprayed on the pavement surface of the pavement
The amount of particles is 0.1 to 0.5 kg / m ² ,
It is less than 5 mm and 1 mm or more .

A high-functional asphalt pavement structure according to a second aspect of the present invention provides an aggregate, filler, asphalt, and rubber particles.
Gap made of asphalt pavement material
A large number of rubber particles have at least one
High-performance asphalt fixed with exposed parts
In the pavement structure, the front in the asphalt pavement material
The weight ratio of the rubber particles is 1 to 10%,
The porosity is 1 to 40%, and is dispersed on the pavement surface of the pavement.
The amount of rubber particles to be clothed is 0.1 to 0.5 kg / m ² , the same size
The diameter range is less than 5 mm and 1 mm or more .

[0007] According to a third aspect of the present invention, there is provided a high-functional asphalt pavement method comprising mixing an aggregate, a filler and asphalt.
Pavement was formed by spreading the asphalt pavement material
Then, rubber particles are sprayed on the pavement surface of the pavement,
High-performance asphalt pavement method compacted by machine
In the pavement, the porosity is adjusted to be 1 to 40%.
Forming and distributing rubber particles on the pavement surface of said pavement
The amount is 0.1-0.5 kg / m ² , and the range of the same particle size is 5 mm
Less than 1 mm.

[0008] The high-functional asphalt pavement structure according to the fourth aspect is characterized in that an aggregate, a filler and asphalt are mixed.
Pavement with voids composed of wet asphalt pavement
Many rubber particles at least partially exposed on the body surface
High-performance asphalt pavement structure fixed in
In the pavement, the porosity is 1 to 40%,
Spreading amount of rubber particles on pavement surface of pavement is 0.1 to
0.5 kg / m ² , same particle size range less than 5 mm and 1 mm or less
It is characterized by being above.

[0011] high performance asphalt pavement structure obtained by high performance asphalt pavement method according to claim 1 or claim 2
According to the highly functional asphalt pavement structure, the gap in the pavement absorbs an external sound (for example, traffic noise). At this time, if the porosity is 10% or more, the function becomes large. Further, the rubber particles in the pavement and the pavement containing the rubber particles resonate and vibrate, and the rubber particles on the pavement surface diffusely reflect the incident sound, and act to absorb energy due to contact friction and deformation of the rubber. Each of these actions synergistically reduces the incident sound and, as a result, exhibits great sound absorption. The sound absorption of the asphalt pavement mixed with rubber particles, which originally has low noise, is further increased, the traffic noise is reduced, and the low noise is further increased.

[0012] high performance asphalt pavement structure obtained by high performance asphalt pavement method according to claim 1 or claim 2
According to the high-performance asphalt pavement structure, the pavement has a sub-elastic property and delicately oscillates due to the load of the traveling vehicle. To create a gap. The rubber particles on the pavement surface
The function of peeling off a thin frozen layer attached to snow or a pavement surface from a pavement surface by the load of a traveling vehicle is further increased. These actions are synergistic, so that the pavement road surface exposure rate can be improved and the function originally possessed by the asphalt pavement mixed with rubber particles can be maintained even in winter when the snow is cold.

[0013] high performance asphalt pavement structure obtained by high performance asphalt pavement method according to claim 3 or claim 4
According to the high-functional asphalt pavement structure, the void inside the pavement absorbs an external sound (for example, traffic noise). At this time, if the porosity of the pavement is 10% or more,
The effect is greater. Further, the rubber particles on the pavement surface diffusely reflect the incident sound, and have effects such as contact friction and energy absorption due to rubber deformation. Each of these actions synergistically reduces the incident sound and, as a result, exhibits a large sound absorbing property. Asphalt pavement is added with low noise characteristics to reduce traffic noise, and is increased for those that originally have low noise characteristics.

[0014] high performance asphalt pavement structure obtained by high performance asphalt pavement method according to claim 3 or claim 4
According to the high-functional asphalt pavement structure described above, a function of peeling off a snow layer or a thin frozen layer adhering to the pavement surface from the pavement surface by the load of the traveling vehicle can be obtained. This makes it possible to improve the pavement road surface exposure rate and maintain the inherent function of the asphalt pavement even in winter when the snow is cold.

According to the high-functional asphalt pavement structure obtained by the high-functional asphalt pavement method of claim 1 or 3 , the pavement has a water permeability of 1 × 10 ^-2 cm / sec.
As described above, rainwater is promptly removed from the pavement, and has a drainage function such as preventing a hydroplaning phenomenon and splashing, thereby contributing to the safe running of traffic vehicles. In addition, such a drainage pavement has a rough pavement surface, so that it is difficult to melt snow in the winter due to clogging, and the snow easily freezes, which may expose weaknesses in winter. Since a large number of rubber particles are fixed in a state where at least a part thereof is exposed, it has a function of peeling off a thin frozen layer attached to snow or a pavement surface from a pavement surface by a load of a traveling vehicle. It can avoid and maintain the drainage function.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described. This example includes asphalt paving method according to claim 1, corresponding to the asphalt pavement structure according to claim 2 obtainable by this process.

(1) Mixing Design As the aggregate and filler, those having the quality described in the “Asphalt Pavement Guidelines” are used.

As the rubber particles, natural rubber or synthetic rubber can be used, and those suitable for this pavement, such as excellent abrasion resistance and weather resistance, are used. Recycled products obtained by crushing or cutting waste tires and the like can also be used if they have a quality suitable for this pavement. In addition, in order to increase the durability of the rubber itself and strengthen the adhesion to aggregate and asphalt, the surface of the rubber particles has been subjected to a polar addition treatment,
A material wrapped with a thin film of asphalt or resin material may be used. Rubber particles have a particle size of less than 5 mm
Use the one adjusted to 1 mm or more. The amount of rubber particles mixed into the pavement is used within a range of 1 to 10% by weight.

The synthetic particle size of the pavement material is properly mixed within the range shown in FIG. 8 according to the purpose of use and local conditions.
The pavement material has a porosity in the range of 1 to 40%, and particularly when low noise is desired, the porosity is adjusted to be in the range of 10 to 40%.

Asphalt is selected and used according to the type of pavement, and it is usual to use modified asphalt. In particular, low noise is required, and the porosity is 10 to 40.
%, It is normal to use a high-viscosity modified asphalt. Particularly, when a high-viscosity modified asphalt manufactured by Obayashi Road Co., Ltd. is used, the effect is further increased. This high-viscosity modified asphalt is manufactured by installing a rubber / resin-based thermoplastic elastomer on straight asphalt, bonding it in a three-dimensional network, and making it uniform through a multi-step process in a dedicated plant. The design asphalt amount is adjusted within a range of 3 to 9%.

(2) Production This asphalt pavement is produced in a normal asphalt plant. First, the aggregate heated to a temperature of 185 ° C. or lower is charged into the mixer. Next, rubber particles at room temperature are charged, and a filler is further charged, followed by dry mixing for 15 to 30 seconds.

Next, the modified asphalt is heated to a temperature of 185 ° C. or less and charged into a mixer, followed by wet mixing for 30 to 50 seconds.

(3) Pavement The asphalt pavement material manufactured in this manner is spread manually on a pavement surface with an asphalt finisher when the amount is small, and when a large amount is used. At this time, the thickness of the paving material is 2
0 to 50 mm is appropriate. The material temperature at this time is 140
１７０170 ° C. At this time, in the case of mechanical construction, it is necessary to squeeze together with a tumbler and vibrator of an asphalt finisher as well as leveling.

On the surface of the spread pavement material, rubber particles 0.
Spray 1-0.5 kg / m ² . The rubber particles may be of the same quality as those added to the pavement shown in paragraph [0018], or may be those having a surface treated as shown in the same paragraph or covered with a thin film, and have a particle size of 5 mm. Less than
The one adjusted to 1 mm or more is used. Rubber particles are sprayed manually for small areas and mechanically for large areas. The amount of rubber particles to be sprayed is appropriately selected according to the local situation and the purpose of use. Thin frozen layer that adheres when 0.2~0.5kg / m ² snow or pavement surfaces is desired to increase the usually between 0.1 and 0.3 kg / m ^2, especially low noise when it is desired to increase the low noise If the normal when it is desired to peel between 0.1 and 0.3 kg / m ^2, especially if expected ice layer release function 0.2~0.5kg / m ²

After spraying the rubber particles, the rubber particles are immediately compacted using a load roller.

Various types of load rollers may be used.
Also, the number of times of compaction is appropriately set according to the type of pavement. However, particularly low noise is desired, and the porosity of the pavement is 10 to 4
When it is within the range of 0%, about 4 to 8 times with an iron wheel roller is appropriate. In this pavement, it is necessary to compact the pavement sufficiently and set the number of times of compaction appropriately so that the rubber particles scattered on the surface are partially exposed to the surface of the pavement and press-fitted in a partially buried form. It is. The dispersed and compacted rubber particles may be used as they are, but it is also possible to spray an asphalt-based or resin-based adhesive on the pavement surface in order to make the fixing more firm. When the asphalt pavement material drops to approximately 50 ° C or less, it is used for transportation.

In FIG. 1, 1 is an aggregate, 2 is asphalt, 3 is rubber particles, 4 is a void, and 5 is a continuous void. As shown in FIG. 1, according to the asphalt pavement structure of this example, the porosity inside the pavement is adjusted so as to be 1 to 40% so that the voids exist alone or in a continuous state. The rubber particles mixed in the body in a weight ratio of 1 to 10% are dispersed in the entire cross section of the pavement, and the rubber particles scattered on the surface are fixed to the pavement surface with at least a part thereof being exposed.

According to such a pavement structure, first, a gap existing alone or continuously in the pavement absorbs an external sound (for example, traffic noise). Next, the rubber particles in the pavement and the pavement containing the rubber particles resonate and vibrate. Further, the rubber particles on the pavement surface diffusely reflect the incident sound and act to absorb energy due to contact friction and deformation of the rubber. Each of these actions synergistically reduces the incident sound and, as a result, exhibits a large sound absorbing property. As described above, the action of the rubber particles fixed in a state of being partially exposed on the surface of the pavement adds a low noise property to reduce traffic noise to the asphalt pavement, and also asphalt pavement which originally has low noise property. In the case, the function is enhanced.

The low noise effect of this embodiment is shown in FIG. 3, which is an experimental result. A comparison of peak sound absorption by a sound absorption measurement test in accordance with JIS A1405 “Vertical incidence sound absorption by pipe method” shows a comparative example at a frequency around 400 Hz.
(1) Low-noise pavement mixed with rubber particles [(Japanese Patent Application No. 7-330
No. 445 Obayashi Road Co., Ltd.)
%) Is about 61%, while the pavement structure of this example having the same porosity is 75%.
%, Clearly showing a significant difference of about 14 points, proving the effect of the present invention.

Similarly, pavement containing rubber particles [(Japanese Patent Application No. 4-28087, Japanese Patent Application No. 4-28088)
No., both filed with Obayashi Road Co., Ltd.) (porosity 1-5)
%)], The rubber particles are pressed into the pavement surface, and are formed so as to be partially exposed and partially buried, so that the sound absorption coefficient is improved. However, the peak sound absorption coefficient of the base pavement is recognized. Is about 20%, which is improved, but its numerical value is low, and is not conspicuous as a sound absorbing effect.

As shown in FIG. 4, JI at the road shoulder
According to the traffic noise level measurement example based on SZ8731, when a large 10 t test vehicle travels at 60 km / h,
At a frequency of 500 to 2,000 Hz, which is in the range of the frequency at which the human body of traffic noise is unpleasant to the human body, the rubber particle-mixed low-noise pavement of Comparative Example (1) [(Application of Japanese Patent Application No. 7-330445, Obayashi Road Co., Ltd.) ( In contrast, the pavement structure of the present example having the same porosity has a noise level lower than about 1 to 2 dB (A), and the Waveforms clearly show a significant difference, proving the effect of the present invention. In addition, the comparative example
(2) is the case of general pavement.

As shown in FIG.
Within the range of 2,000 Hz, the conventional pavement of the comparative example (2) has a 3 to 10 dB (A) compared to the general pavement of the comparative example (2), and the conventional open-grain type low noise pavement of the comparative example (3) has a porosity of 15 to 25%. Noise level is 2 to 5 dB compared to
(A), which are lower than each other, show the lowest peak noise level, and show excellent sound reduction.

The same pavement containing rubber particles (Japanese Patent Application No. 4-28087 and Japanese Patent Application No. 4-280878, both of which were filed by Obayashi Road Co., Ltd.) (porosity: 1 to 5%) Rubber particles are pressed into the pavement surface, exposed halfway, and formed to exist in a partially buried form.
Similarly, within a frequency range of 500 to 2000 Hz,
It is considered that sound reduction of about 1 to 2 dB (A) can be expected.

The asphalt pavement structure of this example is adjusted so that the porosity is 1 to 40% as shown in FIG.
Further, since the rubber particles mixed in the pavement with a weight ratio of 1 to 10% are dispersed in the entire cross section of the pavement, the pavement has a sub-elastic property, and slightly oscillates due to the load of the traveling vehicle. Creating a gap between the pavement surface and the thin frozen layer attached to the snow or pavement surface,
kg / m ^{2 It} is sprayed on the pavement surface, press-fitted, semi-exposed, and formed so as to exist in a partially buried form, so that a thin frozen layer attached to snow or the pavement surface is removed from the pavement surface by the load of the traveling vehicle. The peeling function is further increased. As a result, the pavement road surface exposure rate can be improved even in winter when the snow is cold, and the inherent function of the asphalt pavement containing the rubber particles can be maintained.

In the laboratory, artificial snow was raised on the surface of the pavement specimen, and a test was performed by running a movable wheel using a foil tracking tester (room temperature 0 ° C., specimen temperature 0 ° C.).
In contrast to conventional pavement, artificial snow is pressed against the surface and frozen on the surface due to the traveling of the movable wheel, whereas in the pavement according to the present invention, the artificial snow is separated and removed by traveling the movable wheel once or twice without being frozen. This proves that the asphalt pavement structure of the present example has a high function in cold snowy regions.

A second example of the embodiment of the present invention will be described. This example includes asphalt paving method according to claim 3, corresponding to the asphalt pavement structure according to claim 4 obtainable by this process. Until the asphalt pavement material is manufactured and spread in the steps of the present example, construction is carried out as usual based on the “asphalt pavement outline”. That is,
The difference from the first example is that rubber particles are not mixed into the asphalt pavement. In this example, the asphalt pavement without rubber particles is spread on the road surface. The subsequent steps are the same as in the first example, in which rubber particles are sprayed on the surface of the pavement and rolled.

In FIG. 2, 1 is an aggregate, 2 is asphalt, 3 is rubber particles, 4 is a gap, and 5 is a continuous gap. As shown in FIG. 2, the asphalt pavement structure of this example is adjusted so that rubber particles are not mixed in the pavement, the porosity is 1 to 40%, and the voids are present alone or in a continuous state. Have been. Because of such a pavement structure, the void absorbs an external sound (for example, traffic noise), and the rubber particles on the surface of the pavement diffusely reflect the incident sound, and absorb energy by contact friction and deformation of the rubber. . These actions synergistically reduce the incident sound and exhibit a large sound absorbing property.

As shown in FIG. 6, when comparing the peak sound absorption coefficient described in the paragraph [0029], the conventional open-grain type low noise pavement of Comparative Example (3) (having a porosity of 15 ~ 25% adjusted)
Is about 48%, whereas the pavement structure of the present example having the same porosity is about 55%, which clearly shows a significant difference of about 7 points, proving the effect of the present invention.

As shown in FIG. 7, JI at the road shoulder
According to the traffic noise level measurement example based on SZ8731, when a large 10 t test vehicle travels at 60 km / h,
At a frequency of 500 to 2,000 Hz, which is in the range of the frequency at which the human body of traffic noise is unpleasant to the human body, the conventional open-grain type low-noise pavement of Comparative Example (3) (adjusted so that the porosity is 15 to 25%) On the other hand, the pavement structure of the present example has a noise level lower than about 0 to 1 dB (A), and shows a significant difference in the waveform of the noise level, proving the effect of the present invention. ing.

General pavement (porosity is 1 to 5%)
Also, in the case where rubber particles are pressed into the pavement surface and formed so as to be partially exposed and partially buried, similarly, within a frequency range of 500 to 2000 Hz, approximately 1 to 2 dB (A). It can be expected that the sound reduction property can be expected.

The function of peeling off the ice layer of the asphalt pavement structure of this embodiment will be described. The pavement structure of this example has a function of peeling off a snow layer or a thin frozen layer adhering to the pavement surface from the pavement surface by the load of the traveling vehicle. This makes it possible to improve the pavement road surface exposure rate and maintain the inherent function of the asphalt pavement even in winter when the snow is cold. The effect was proved by the same experiment as the first example.

In each of the examples described above, before the compaction of the pavement, rubber particles are applied to the pavement surface in an amount of 0.1 to 0.1%.
By spraying 0.5 kg / m ² and compacting it, rubber particles are formed so as to be partially exposed on the surface of the pavement and to be present in a partially buried form. It does not have a negative effect. Therefore, the function originally possessed by the base asphalt pavement is maintained as it is. For example, the durability, such as fluidity resistance and abrasion resistance, of the asphalt pavement serving as the base material is maintained as it is.

[0043]

According to the high-functional asphalt pavement method and the high-functional pavement structure according to the first and second aspects, the rubber particles are dispersed in the entire cross section of the pavement having a large porosity, and the rubber particles are dispersed in the pavement. Is formed to be half-exposed and semi-buried in the surface of the. According to the high-functional asphalt pavement structure, the gap in the pavement absorbs an external sound (for example, traffic noise). At this time, the porosity is 10%
With the above, the function becomes large. Further, the rubber particles in the pavement and the pavement containing the rubber particles resonate and vibrate, and the rubber particles on the pavement surface diffusely reflect the incident sound, and act to absorb energy due to contact friction and deformation of the rubber.
Each of these actions synergistically reduces the incident sound and, as a result, exhibits great sound absorption. The sound absorption of asphalt pavement mixed with rubber particles that originally possesses low noise is further increased,
Reduce traffic noise and increase noise reduction. Therefore, the pavement is excellent in durability and has less noise due to the vehicle than the case of only the asphalt pavement material mixed with rubber particles. Furthermore, in winter snowy and cold regions, the function of exposing the pavement surface by exfoliating the thin frozen layer attached to snow or the pavement surface by the load of the traveling vehicle is obtained, contributing to the safety traffic of winter vehicles and rubber particles. Can continue the function originally possessed by the pavement mixed with and can maintain low noise.

The high-functional asphalt pavement method and the pavement structure according to the third and fourth aspects are formed so that the rubber particles are partially exposed on the surface of the pavement and exist in a semi-buried form. According to the high-functional asphalt pavement structure, the void inside the pavement absorbs an external sound (for example, traffic noise). At this time, the porosity of the pavement is 10
%, The effect increases. Further, the rubber particles on the pavement surface diffusely reflect the incident sound, and have effects such as contact friction and energy absorption due to rubber deformation. Each of these actions synergistically reduces the incident sound and, as a result, exhibits a large sound absorbing property. Asphalt pavement is added with low noise characteristics to reduce traffic noise, and is increased for those that originally have low noise characteristics. Therefore, a low-noise pavement in which traffic noise caused by a traffic vehicle is reduced as compared with the conventional pavement is obtained. Furthermore, in winter snowy cold regions, the function of exposing the pavement surface by removing the thin frozen layer attached to the snow or pavement surface by the load of the traveling vehicle is obtained, contributing to the safety traffic of winter vehicles and originally The function possessed by the pavement can be continued and low noise can be maintained.

[Brief description of the drawings]

FIG. 1 is a sectional view of an asphalt pavement structure which is a first example of an embodiment corresponding to the first and second aspects of the present invention.

FIG. 2 is a sectional view of an asphalt pavement structure which is a second example of the embodiment corresponding to the third and fourth aspects of the present invention.

FIG. 3 is a diagram showing a relationship between a sound absorption coefficient and a frequency showing an effect of the first example of the embodiment corresponding to the inventions described in claims 1 and 2 ;

FIG. 4 is a diagram showing a relationship between a noise level and a frequency showing an effect of the first example of the embodiment corresponding to the first and second aspects of the present invention.

FIG. 5 is a diagram showing a relationship between a noise level and a frequency showing an effect of the first example of the embodiment corresponding to the first and second aspects of the present invention.

FIG. 6 is a diagram showing a relationship between a sound absorption coefficient and a frequency showing an effect of the second example of the embodiment corresponding to the inventions described in claims 3 and 4 ;

FIG. 7 is a diagram showing the relationship between the noise level and the frequency showing the effect of the second example of the embodiment corresponding to the third and fourth aspects of the invention.

FIG. 8 is a diagram showing a synthetic particle size of an asphalt pavement material in a first example of an embodiment corresponding to the inventions described in claims 1 and 2 ;

[Explanation of symbols]

1 is an aggregate, 2 is asphalt, 3 is rubber particles, 4 is a void, and 5 is a continuous void.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-209612 (JP, A) JP-A-8-49205 (JP, A) JP-A-7-54304 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) E01C 7/26

Claims (4)

(57) [Claims] 1. A pavement is formed by laying an asphalt pavement material in which an aggregate, a filler, asphalt and rubber particles are mixed to form a pavement, and then spraying rubber particles on the pavement surface of the pavement and tightening by a rolling machine. in high performance asphalt wherein the compacting, the weight ratio of the rubber particles in the asphalt paving
Is 1 to 10%, and the porosity of the pavement is 1 to 40%.
And formed on the pavement surface of the pavement.
0.1 to 0.5 kg / m ^{2 in} the same particle size range
Is less than 5 mm and not less than 1 mm . 2. Aggregate, filler, asphalt and rubber particles
Gap made of asphalt pavement material
A large number of rubber particles have at least one
High-performance asphalt fixed with exposed parts
In the pavement structure, the weight ratio of the rubber particles in the asphalt pavement material
Is 1 to 10%, and the porosity of the pavement is 1 to 40%.
And the amount of rubber particles sprayed on the pavement surface of the pavement
Is 0.1 to 0.5 kg / m ² , and the range of the same particle size is 5 mm or less.
Highly functional asphas characterized by being 1 mm or more
Rut pavement structure. 3. Mixing of aggregate, filler and asphalt
Pavement was formed by spreading the asphalt pavement material
Then, rubber particles are sprayed on the pavement surface of the pavement,
High-performance asphalt pavement method compacted by machine
In the above, the pavement is formed so that the porosity is 1 to 40%,
The amount of rubber particles sprayed on the pavement surface of the pavement is set at 0.
1 to 0.5 kg / m ² , the same particle size range is less than 5 mm and 1 m
m high-performance asphalt pavement
Mounting method. 4. Mixing aggregate, filler and asphalt
Pavement with voids composed of wet asphalt pavement
Many rubber particles at least partially exposed on the body surface
High-performance asphalt pavement structure fixed in
The porosity of the pavement is 1 to 40%,
Spreading amount of rubber particles on pavement surface is 0.1-0.5k
g / m ² , and the range of the particle size is less than 5 mm and 1 mm or more
Highly functional asphalt pavement structure characterized by the following.