JP2012172441A - Pavement, pavement system and construction method for pavement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pavement of which scent can last; a pavement system; and a construction method for the pavement.SOLUTION: A pavement system is provided with a pavement 10 having an open-graded mixture layer 11 with a continuous void, a filler 12 to be packed in the continuous void and having a pore for holding water and a scent-emitting and insoluble perfume grains 13 to be held by the filler 12, water supply means for supplying water to the perfume grains 13 and a control device for controlling the water supply means based on the ambient temperature from a temperature sensor.

Description

  The present invention relates to a pavement, a pavement system, and a pavement construction method.

  Conventionally, there are known wood-based pavements using wood chips soaked with scents, and pavement blocks in which fragrance is added to a recycled rubber chip flat plate formed by molding recycled rubber chips (see Patent Documents 1 and 2).

JP 2001-131903 A Registered Utility Model No. 3016413

  However, in Patent Documents 1 and 2, the scent gradually disappears after the pavement is used, and when it disappears in this way, it is difficult to recover the scent.

  Then, this invention makes it a subject to provide the construction method of the pavement which can maintain a fragrance, a pavement body system, and a pavement.

  As means for solving the above problems, the present invention comprises an open particle size mixture layer having continuous voids, a filler having pores filled in the continuous voids and holding water, and held in the filler. It is a pavement characterized by providing the fragrance | flavor particle | grains which generate | occur | produce a fragrance.

According to such a pavement, moisture due to rain, hitting water, or the like is retained in the pores of the filling. When water is retained in this way, when the retained moisture evaporates into water vapor, the fragrance particles are slightly eluted, vaporized, and dispersed in the water vapor, resulting in the generation of scent from the pavement. The fragrance is released.
Here, since the fragrance | flavor particle | grains are hold | maintained at the filling, it does not flow out easily with rain water or hammering water. Thereby, the fragrance which a pavement emits can be maintained over a long period of time.

  On the other hand, when water is not retained, the fragrance particles sublimate slightly, and as a result, a fragrance is generated from the pavement and the fragrance is released. In this case, since the fragrance particles are held in the filler, the contact area with the outside air is smaller than the configuration in which the fragrance particles are simply sprayed on the existing water-retaining pavement. Therefore, the sublimation speed of the fragrance grains is slowed. As a result, the scent emitted by the pavement can be maintained for a long period of time, and the scent does not disappear early.

  Further, even when water is not retained in this way, water is retained in the pores of the filling by watering such as hammering water, and when the retained moisture evaporates to become water vapor, a fragrance is generated from the pavement. A fragrance is emitted. That is, even when water is not held, the scent can be recovered by holding water by watering.

  Moreover, in the pavement, it is preferable that the fragrance particles are hardly soluble in water.

  According to such a pavement, since the fragrance particles are hardly soluble in water, the fragrance particles are more difficult to elute due to rainfall or water hitting. Thereby, the fragrance which a paving body emits can be continued over a long period of time, and the scent sustainability and the generation of the scent can be balanced.

  The present invention is a pavement system comprising the pavement and water supply means for supplying water to the pavement.

According to such a pavement system, water can be supplied to the pavement (filler, fragrance particles) by the water supply means, and as a result, the scent can be recovered.
In this case, the environmental condition detection means for detecting the environmental condition (outside temperature, humidity, road surface temperature, rainfall, date, time, etc.) of the pavement, and the water supply means based on the environmental condition detected by the environmental condition detection means It is good also as a structure provided with the control means to control.
In addition, for example, there are a plurality of scented fragrance particles corresponding to the season (spring, summer, etc.), the fragrance particles are classified by fragrance in plan view of the pavement, and the water supply means corresponds to the season. It is good also as a structure which supplies water to.

  Further, the present invention provides an open particle size mixture layer having continuous voids, a filler having pores for holding water filled in the continuous voids, and a fragrance particle that is held in the filler and generates a scent. A first step of injecting the grout that becomes the filler by hardening into the continuous voids of the open particle size mixture layer, and after the hardening of the grout, the perfume particles A second step of spraying a fragrance liquid dispersed in a solvent on the surface of the open particle size mixture layer, and a third step of vaporizing the solvent and holding the fragrance particles in the filler. It is the construction method of the paving body to do.

  According to such a pavement construction method, grout is poured into the continuous voids of the open particle size mixture layer (first step), and after the grout is cured, the fragrance liquid is sprayed on the surface of the open particle size mixture layer (second Step), by vaporizing the solvent, the fragrance particles are held in the pores in the filler (third step). Thereby, the pavement which can maintain a fragrance can be obtained.

  Further, the present invention provides an open particle size mixture layer having continuous voids, a filler having pores for holding water filled in the continuous voids, and a fragrance particle that is held in the filler and generates a scent. And a process A for preparing a grout solution by mixing a perfume liquid in which the perfume particles are dispersed in a solvent and a grout that becomes the filler by curing. Step B for injecting the grout solution into the continuous voids of the open particle size mixture layer; Step C for curing the grout and vaporizing the solvent to retain the perfume particles in the filler. It is the construction method of the pavement characterized by including.

  According to such a pavement construction method, a fragrance liquid and grout are mixed to prepare a grout solution (step A), the grout solution is injected into a continuous space (step B), and the grout is cured. At the same time, the solvent is vaporized to hold the fragrance particles in the pores of the filler (step C). Thereby, the pavement which can maintain a fragrance can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the construction method of the pavement which can maintain a fragrance, a pavement body system, and a pavement can be provided.

It is a figure which shows the structure of the pavement body system which concerns on this embodiment. It is sectional drawing of the pavement which concerns on this embodiment. It is a graph which shows one effect of the pavement system concerning this embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

≪Pavement composition≫
As shown in FIG. 1, the pavement system 1 according to this embodiment includes a pavement 10, a water supply unit 20 that supplies water to the pavement 10, and an environmental state detection unit that detects an environmental state of the pavement 10. And a control device 40 for controlling the water supply means based on the environmental state.

<Pavement>
As shown in FIG. 2, the pavement 10 is constructed on an impermeable layer S, and has an open particle size mixture layer 11 having a continuous void and serving as a base, and is filled in the continuous void to hold water (water retention). ), And a fragrance particle 13 that is held by the filler 12 and generates a fragrance.
The impermeable layer S is composed of, for example, a dense particle size asphalt mixture layer.

<Pavement-Open particle size mixture layer>
The open particle size mixture layer 11 has continuous voids of about 10 to 30%.
Such an open particle size mixture layer 11 is an open particle size asphalt mixture layer in which an asphalt mixture is compacted to a predetermined size. Is formed. Aggregates are composed of coarse aggregates such as No. 6 crushed stone, fine aggregates such as coarse sand, and stone powder, and their blending ratio is designed so that the continuous voids are about 10 to 30%. ing.
However, the open particle size mixture layer 11 is not limited to this, and may be a porous concrete layer, for example.

  The asphalt binder forming the asphalt binder film is preferably a high-viscosity modified asphalt binder to which an anti-peeling agent such as amine is added in consideration of the peel resistance to water and the like. The amount of the asphalt binder is designed so that the open particle size mixture layer 11 has good flow resistance and flexibility.

<Pavement-Filling>
The filler 12 has fine pores (not shown) capable of holding the fragrance particles 13 and holding water therein, and is also referred to as a water retention material. Thus, since the filler 12 can hold | maintain water with the said pore, ie, has a water retention function, the temperature of the pavement 10 can also be lowered | hung in the summer.

Such a filler 12 is formed, for example, by injecting and curing a water retention grout (water retention material) into the continuous voids of the open particle size mixture layer 11. The water retention grout is synonymous with the “silt filler” of Japanese Patent No. 3156151 by the applicant of the present application, and includes a silt powder, a cement solidifying material, water, a water reducing agent or a setting retarder as an additive. It is a mixture.
However, the specific type of the filler 12 (water retention material) is not limited to this, and can be appropriately selected from other fillers (water retention materials).

  As the silt powder, for example, a dust collected from rocks can be used. As the cement-based solidifying material, it can be appropriately selected and used from super fast setting cement, ordinary Portland cement, ultra-high strength cement, early strength cement, blast furnace cement and the like in consideration of construction conditions. As the water reducing agent for the additive, for example, a water reducing agent such as a carboxylic acid type or a melanin type can be used, and as the setting retarder for the additive, for example, an SBR type, acrylic type, or vinyl acetate type polymer emulsion can be used. .

<Pavement-Fragrance>
The fragrance | flavor particle | grain 13 is a particle | grain which contains a fragrance | flavor component (for example, 2,6-di-tert-butyl-4-cresol), and generate | occur | produces a fragrance (releases a fragrance). Moreover, the fragrance | flavor particle | grain 13 is smaller than the pore of the filler 12, and is a magnitude | size of the grade accommodated and hold | maintained in this pore.
Further, the fragrance particles 13 are hardly soluble in water, that is, have a mild solubility in water, and are held in the pores of the filler 12. Thereby, the fragrance | flavor particle | grains 13 do not flow out easily by rain water, hammering water, etc., and fragrance continues for a long period of time.

<Water supply means>
Returning to FIG. 1, the description will be continued.
The water supply means 20 is means for supplying water to the pavement 10 (filler 12, fragrance particles 13), and includes a tank 21 for storing water and a pump 22 for pumping water. When the pump 22 operates according to the command from the control device 40, the water in the tank 21 is supplied to the pavement 10 through the pipe 21a, the pump 22, and the pipe 22a.

Note that the downstream side of the pipe 22a is branched into a plurality of pieces and is embedded in the pavement 10 as shown in FIG. A plurality of supply holes 22b are formed in the pipe 22a, and water is supplied to the pavement 10 through the supply holes 22b.
However, it is not limited to the configuration in which water is supplied from the inside of the pavement 10 as described above, and a configuration in which water is sprayed on the surface of the pavement 10 may be used.

<Environmental state detection means>
The environmental state detection means includes temperature sensors 31 and 32, a humidity sensor 33, a rainfall sensor 34, and a calendar 35.
The temperature sensor 31 detects the outside air temperature and outputs it to the control device 40. The temperature sensor 32 detects the road surface temperature (the temperature of the pavement 10) and outputs it to the control device 40. The humidity sensor 33 detects the humidity (relative humidity) of the outside air and outputs it to the control device 40. The rain sensor 34 detects rain and outputs it to the control device 40. The calendar 35 outputs the date and time to the control device 40.

<Control device>
The control device 40 is a control device that electronically controls the pavement system 1, and includes a CPU, a ROM, a RAM, various interfaces, an electronic circuit, and the like, and various functions according to programs stored therein. To control various devices.

For example, the control device 40 is set to operate the pump 22 and supply water to the pavement 10 when the outside temperature input from the temperature sensor 31 is equal to or higher than a predetermined outside temperature (for example, 30 ° C.). .
Further, the control device 40 is set to operate the pump 22 and supply water to the pavement 10 when the road surface temperature input from the temperature sensor 32 is equal to or higher than a predetermined road surface temperature (for example, 35 ° C.). .

The control device 40 is set to operate the pump 22 and supply water to the pavement 10 when the humidity input from the humidity sensor 33 is equal to or lower than a predetermined humidity (for example, 20% RH).
Further, the control device 40 is set to stop the pump 22 when it is determined that there is rainfall through the rainfall sensor 34.

  In addition, when the time input from the calendar 35 is, for example, between 10:00 and 15:00, the control device 40 operates the pump 22 periodically (for example, every hour) to supply water to the pavement 10. It is set to be.

  Further, the pavement 10 includes a plurality of fragrance particles 13 corresponding to the season (spring, summer, etc.), and the fragrance particles 13 are classified for each fragrance in the plan view of the pavement 10, and the water supply means 20. Is configured to be able to supply water to each fragrance grain, the control device 40 obtains the season based on the date input from the calendar 35, and water is supplied to the fragrance grain 13 corresponding to this season. The pump 22 is configured to operate.

≪Effects of pavement system≫
According to such a pavement system 1, the following operational effects are obtained.
Moisture due to rainfall, water hitting, or the like is retained in the pores of the filler 12. When water is retained, when the moisture evaporates into water vapor, the fragrance particles 13 are slightly eluted, vaporized, and dispersed in the water vapor. As a result, a fragrance is generated from the pavement 10 and the fragrance is released. Be drunk.
Here, since the fragrance | flavor particle | grains 13 are hold | maintained at the filler 12, it does not flow out easily with rain water, hammering water, etc., and fragrance is maintained over a long period of time.

  On the other hand, even when water is not retained, the fragrance particles 13 sublimate slightly, generating a fragrance and releasing a fragrance. In this case, since the fragrance | flavor particle | grains 13 are hold | maintained at the filler 12, the contact area with external air becomes small with respect to the structure etc. in which the fragrance | flavor particle | grains 13 were just sprayed. Therefore, the sublimation rate of the fragrance | flavor particle | grain 13 becomes slow, As a result, a fragrance is maintained over a long period of time.

  Even when water is not held in this way, the control device 40 can restore the scent by operating the pump 22 and supplying water to the pavement 10 (fragrance particles 13).

Furthermore, in FIG. 3, the change of the fragrance intensity | strength of the pavement 10 after test construction is shown.
A fragrance liquid having a fragrance concentration of 3% was sprayed at 4 L / m ² . The scent intensity was evaluated based on a 6-step odor intensity display method. Further, in FIG. 3, the weather other than the day indicating “watering” and “light rain” is fine.

As shown in FIG. 3, the pavement 10 continues to release a scent (fragrance) for 40 days or more after construction. Moreover, when the clear sky continues for 5 days or more, although the surface (road surface) of the pavement 10 approaches a dry state, the pavement 10 continues to emit a scent (fragrance). Furthermore, when the pavement 10 retains moisture due to rainfall or watering, the fragrance strength increases and recovers as the retained moisture evaporates.
On the other hand, in the case where the fragrance liquid was sprayed on the dense particle size asphalt pavement having no water retention, the scent intensity decreased to “1” or less the next day after the spraying.

≪Pavement construction method≫
Next, the construction method of the pavement 10 will be described.
The construction method of the pavement 10 includes a first step of injecting a water retaining grout that becomes a filler 12 by curing into the continuous voids of the open particle size mixture layer 11, and a filling in which the water retaining grout is cured and has pores. After the product 12 is formed, a second step in which the fragrance liquid in which the fragrance particles 13 are dispersed in the solvent is sprayed on the surface of the open particle size mixture layer 11, and the solvent is vaporized to make the fragrance particles 13 into the pores of the filling 12 A third step of holding.

In this case, it is preferable that the said fragrance | flavor liquid is what diluted the fragrance | flavor stock solution in which the fragrance | flavor particle | grains 13 melt | dissolved in the organic solvent (ethanol etc.) to water by 1 to 10% by mass ratio. And in a 2nd process, it is preferable to spray this fragrance | flavor liquid at 0.5-10 L / m < ² >.
If it does in this way, it will become easy to distribute perfume grain 13 to the whole pavement 10.

≪Modification≫
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, For example, it can change as follows.

The construction method of the pavement 10 according to the above-described embodiment may be modified as follows.
That is, the construction method of the pavement 10 according to the modified example is to prepare a grout solution by mixing a fragrance liquid in which the fragrance particles 13 are dispersed in an organic solvent and a water retention grout that becomes the filler 12 by curing. Step A, Step B for injecting this grout solution into the continuous voids of the open particle size mixture layer 11, hardening the water retaining grout and evaporating the organic solvent to form the perfume grains 13 in the pores of the filler 12. And may be modified so as to include the C step that is held in the step.
Moreover, you may construct the pavement 10 by sprinkling the said fragrance | flavor liquid to the existing water retention pavement. In this case, the existing water-retaining pavement may be configured by laying a plurality of water-retaining blocks.

DESCRIPTION OF SYMBOLS 1 Pavement system 11 Open particle size mixture layer 12 Filling 13 Fragrance | flavor particle 20 Water supply means 21 Tank 22 Pump 31, 32 Temperature sensor 33 Humidity sensor 34 Rainfall sensor 35 Calendar 40 Control apparatus

Claims (5)

An open particle size mixture layer having continuous voids;
A filler having pores that fill the continuous voids and retain water;
Perfume grains that are held in the filling and generate a fragrance,
A pavement characterized by comprising. The pavement according to claim 1, wherein the fragrance particles are hardly soluble in water. The pavement according to claim 1 or claim 2,
Water supply means for supplying water to the pavement;
A pavement system characterized by comprising: An open particle size mixture layer having continuous voids;
A filler having pores that fill the continuous voids and retain water;
Perfume grains that are held in the filling and generate a fragrance,
A pavement construction method comprising:
A first step of injecting the grout that becomes the filler by curing into the continuous voids of the open particle size mixture layer;
A second step of spreading the fragrance liquid in which the fragrance particles are dispersed in a solvent after the grout is cured, on the surface of the open particle size mixture layer;
A third step of vaporizing the solvent to hold the fragrance particles in the filler;
A pavement construction method characterized by comprising: An open particle size mixture layer having continuous voids;
A filler having pores that fill the continuous voids and retain water;
Perfume grains that are held in the filling and generate a fragrance,
A pavement construction method comprising:
Step A for preparing a grout solution by mixing a flavor liquid in which the flavor particles are dispersed in a solvent and a grout that becomes the filler by curing.
Step B injecting the grout solution into the continuous voids of the open particle size mixture layer;
Curing the grout and evaporating the solvent to retain the fragrance particles in the filling;
A pavement construction method characterized by comprising:

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