JPH05302302A - Pavement grown with plant - Google Patents

Abstract

PURPOSE:To give a natural feeling to the external appearance of the pavement to provide harmony with nature. CONSTITUTION:A pavement 1 is constituted by interposing soil 3 containing seeds of grass in the gaps between particles 2 of asphalt concrete. And by growing the seeds of grass, the grass grows, so that the pavement 1 in harmony with nature can be obtained. And by setting the surface position of the soil 3 at a level lower than the upper position of the particles 2 of asphalt concrete, the grass is protected, whereby the pavement 1 which maintains a natural appearance for a long period can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement in which plants such as lawns grow on asphalt concrete constructed in a parking lot.

[0002]

2. Description of the Related Art Conventionally, impermeable asphalt concrete and water permeable pavement have been constructed in parking lots and promenades. In addition, a semi-flexible pavement for the purpose of coloring and lightness may be used.

[0003]

However, since the pavement body made of asphalt concrete is composed only of asphalt concrete, it lacks harmony with the surrounding nature. In addition, the colored product is artificially colored and lacks a natural appearance.

The present invention has been made by paying attention to the problems existing in the above-mentioned prior art, and its object is a plant which gives a natural feeling to the appearance of the pavement and can achieve harmony with nature. The purpose is to provide pavement that grows.

[0005]

In order to achieve the above object, in the pavement of the first aspect of the present invention, a plant having seeds of a plant is allowed to grow in a space between particles of asphalt concrete to grow the plant. It is characterized by that. In addition, the pavement of the second invention is characterized in that the surface position of the earth is set to a position lower than the upper surface position of the particles of asphalt concrete to protect the plants.

Next, the structure of the present invention will be described in detail. Asphalt concrete is formed by mixing aggregate, crushed stone auxiliary material, binder and the like in a predetermined ratio. This asphalt concrete is composed of an aggregate of many particles.

As the aggregate, crushed stone, gravel, porous crushed stone such as crushed pieces of ALC concrete, lava, etc. are used, and the particle size thereof is preferably large and substantially uniform. This aggregate has good water flow and should be suitable for plant growth. The maximum particle size of this aggregate is preferably 5 to 150 mm, more preferably 13 to 60 mm.

Examples of crushed stone auxiliary materials include sand, stone powder, slaked lime, vegetable fibers, pigments and the like. For example, the plant fiber is Arbocel ZZ manufactured by Miki Sangyo Co., Ltd., and the pigments are Toda Color 300R (red), AP1 (blue), and ND803 manufactured by Toda Kogyo Co., Ltd.
(Green), Y48 (Yellow), Brown (Brown), and Bengala R25, trade name, manufactured by Nippon Beni Kogyo Co., Ltd. By blending these pigments, the asphalt concrete itself can be colored in a desired color.

The content of the crushed stone auxiliary material is preferably 0.5 to 30% by weight, more preferably 5.0 to 15.0% by weight in the asphalt concrete to be formed. The proportion of vegetable fiber in the crushed stone auxiliary material is preferably 0.1 to 2.0% by weight with respect to the binder, 0.3
It is more preferable that the content is ˜1.0% by weight. In addition, the blending ratio of pigment is 0.5 ~ in asphalt concrete.
10.0 wt% is preferred and 1.0-7.0 wt% is more preferred.

The binder has a function of binding the aggregate and the crushed stone auxiliary material, and examples thereof include asphalt, asphalt emulsion, color paving emulsion, and other modifiers. Specifically, asphalt includes straight asphalt, modified asphalt, semi-blown asphalt, and decolorizing asphalt. Examples of modified asphalt include Epoch Palt D, a product name manufactured by Nikko Eisei Co., Ltd., Polyphalt S, a product name manufactured by Nisso Chemical Co., Ltd., and Senaphalt, a product name manufactured by Bridgestone Co., Ltd. The product name is COLAX SS, and the product name is Fujicon Ace manufactured by Fuji Kosan Asphalt Co., Ltd.

Examples of asphalt emulsions include Catiosol GM, a product name of Nitsubo Chemical Co., Ltd., and Treatsol C, a product name of Nippon Pakdo Co., Ltd., and color paving emulsions of Fuji Kosan Asphalt Co., Ltd. The product name BEATEX Emulsion manufactured by Road Industry Co., Ltd. can be mentioned.

Further, as modifiers, Hardway Ichi type manufactured by Denki Kagaku Kogyo Co., Ltd., TR-100 manufactured by Taisei Road Co., Ltd., and Birdie Pock manufactured by Nikkei Seisaku Co., Ltd. can give.

The blending ratio of the aggregate and the binder is preferably 60.0 to 99.5% by weight of the aggregate and 0.5 to 10.0% by weight of the binder, and 75.0 to 95.0% by weight of the aggregate and 2.0 to 7.0% by weight of the binder. % Is more preferable.
When the amount of the binder is too small, the pavement lacks the integrity and is easily separated. When the amount of the binder is too large, the asphalt drips to form a film on the lower part of the pavement, which results in poor drainage, which is not preferable. The modifier is 0.5-15.0 in the binder.
It is preferably in the range of 6.0 to 10.0% by weight, and more preferably in the range of 6.0 to 10.0% by weight.

By mixing these materials, an asphalt concrete composed of particles having a large particle size can be obtained. The particle size of the asphalt concrete particles is 0.0 to 35.0% by weight when passing through a sieve with an aperture of 2.36 mm, and 0.0 to 35.0% by weight when passing through a sieve with an aperture of 0.075 mm.
It is preferably 15.0% by weight, the rate of passing through a sieve with an opening of 2.36 mm is 5.0 to 15.0% by weight, and the opening is 0.075 mm.
It is more preferable that the ratio of passing through the sieve is 2.0 to 8.0% by weight.

The asphalt concrete thus obtained is paved by an asphalt finisher or human power to form a pavement. The porosity between the asphalt concrete particles in this pavement is preferably 10 to 40%, more preferably 15 to 35%. If the porosity is too small, the roots of the plant cannot be sufficiently rooted, and if it is too large, the asphalt concrete particles do not have contact points with each other and the asphalt concrete particles are easily separated when used as a pavement.

Next, as an injection material to be injected into the voids between the particles of the asphalt concrete, earth such as mackerel soil and upland soil is used, and a fertilizer and a water retention agent are mixed depending on the type of soil. For example, as a fertilizer, there is a hormone agent (polysaccharide in cell extract), which is a product name of Snow Glow Ace manufactured by Snow Brand Co., Ltd. An example is Kyowa Oil Industry Co., Ltd.'s product name Wet Keeper P, which is composed of organic polymer compounds. Also, the soil has 2 openings
Those that are perforated with a ~ 5 mm sieve are preferred.

These materials are mixed with water and adjusted to have a predetermined viscosity. The viscosity is preferably 4 to 60 seconds, more preferably 8 to 20 seconds, as a test value by the P funnel flow test. The P funnel flow test is based on the P funnel of the JSCE standard (JSCE-19
It is measured as follows by the method specified in 86).

That is, as the P funnel, the inner diameter of the upper end 17
Prepared is a cast aluminum product having an outflow pipe of 8 mm, lower end inner diameter 13 mm, funnel height 192 mm, inner diameter 13 mm, and length 38 mm, which can measure a 1725 cc sample with a point gauge installed on the funnel side wall. Then, after pouring the sample mortar into the funnel and letting out an appropriate amount of the mortar from the outflow pipe, the outlet is pressed with a finger and the mortar is poured until it comes into contact with the point gauge installed on the side surface of the funnel. Then, the finger is released to allow the mortar to flow out, and the flow time until the mortar that has continuously flowed out is interrupted for the first time is measured with a stopwatch.

Further, the injection ratio of the injection material is preferably 10 to 100%, more preferably 50 to 95% with respect to the voids between the asphalt concrete particles. The injected material is vibrated by a vibration applying device such as a tamper or a vibro plate to fill the voids between the asphalt concrete particles.

The seeds contained in the earth include plant seeds such as lawn seeds and moss seeds. These seeds should be able to withstand a certain amount of steps, and should be resistant to the cold. Specifically, as Kentucky bluegrass, which is a type of lawn, the product name Snow KB, Snow KB ▲ ▼, Nugget, Baron, manufactured by Yuki Brand Co., Ltd.
Examples include Phil King, and the moss belonging to the genus Convolvulaceae, Dykandra, manufactured by Snow Brand Co., Ltd. This seed may be mixed with an injecting material or earth, or may be sprayed after injecting the injecting material. After the completion of construction, it is preferable to cure by sprinkling water.

The pavement thus formed is applied to parking lots, bicycle parking lots, promenades, cycling roads, walking paths in parks, tennis courts, jogging roads, gardens, slopes of embankments, etc. in ordinary households and golf courses. ..

[0022]

In the pavement of the first aspect of the invention, the earth having plant seeds is interposed in the voids between the asphalt concrete particles. Therefore, by growing the seeds of the plant existing in the portion of the earth, a pavement having a natural appearance of the plant which has never been seen can be obtained.

Further, in the pavement body of the second invention, the surface position of the earth is set lower than the upper surface position of the asphalt concrete particles. Therefore, even if a person walks on this pavement or a bicycle or car runs, the force is received by the asphalt concrete particles,
Less likely to damage plants growing from earth.

[0024]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIG.

As shown in FIG. 1, a pavement 1 is formed by filling voids between particles 2 of asphalt concrete with soil 3 and arranging a large number of lawn seeds 4 on the surface of the soil 3. There is. Then, by growing the seeds 4, the pavement 1 with a lawn is formed. Therefore, materials, construction methods, and the like for forming the pavement 1 will be sequentially described below.

1) Material for asphalt concrete Type of crushed stone: hard sandstone, maximum particle size of crushed stone: 30 mm, type of asphalt: straight asphalt The composition of these materials is crushed stone (particle size 20 to 30 mm) 5
8.2% by weight, crushed stone (particle size 13-20 mm) 29.0% by weight,
Sand 4.8% by weight, stone powder 4.8% by weight, and straight asphalt 3.2% by weight. The particle size of the asphalt concrete obtained by mixing these is 100% for passing through a sieve with an opening of 37.5 mm, 99.3% for passing through a sieve with an opening of 31.5 mm, and a sieve with an opening of 2.36 mm. The percentage passing through
9.9%, the ratio of passing through a sieve with an opening of 0.075 mm is 4.2%
Is.

2) Construction of asphalt concrete Construction was carried out substantially uniformly within a construction area of 5 m ^{2 with} a construction thickness of 8 cm. The porosity between the asphalt concrete particles after construction was 30%.

3) Injecting material As an injecting material, a mixed liquid of 68.0% by weight of mackerel soil, 31.97% by weight of water, and 0.03% by weight of the above-mentioned green cyximer was used as a fertilizer. The viscosity of this mixed solution was 16 seconds as the above-mentioned P funnel flow value, and the specific gravity was 1.5 g / cm ³ . The injection rate was 95% with respect to the voids between the asphalt concrete particles. Therefore, the amount of material injected was 171 kg.

The pouring material was filled in the voids between the asphalt concrete particles while vibrating with a bipro plate. At this time, as shown in FIG. 1, the asphalt concrete particles were filled almost to the surface so that the asphalt concrete particles could be seen from the surface.

4) Lawn Seeds Kentucky Bluegrass Snow KB ▲ ▼
Was mixed with sand and sprayed with a sieve having an opening of about 5 mm. The seeds of this lawn were sprayed at 30 g per 1 m ² .

5) Condition of the surface of the pavement The surface of the pavement after the completion of the construction was a layer of sand mixed with grass seeds having a thickness of about 2 mm.

6) Lawn Growth Condition 14 days after construction: A faint green of the lawn was observed. 60 days after construction: A lawn was grown on the entire surface of the pavement and became vivid green.

As described above, in this embodiment, since the lawn grows on the asphalt concrete pavement, it is possible to obtain a pavement that changes its appearance and is in harmony with nature. In the conventional ground with only lawn, when driving on a rainy day with a car, the ground loosened and a rut of the tire occurred, but the pavement of this example has a rut because the asphalt concrete is the base There is no fear. (Embodiment 2) Another embodiment of the present invention will be described below with reference to FIG.

As shown in FIG. 2, the pavement 1 is filled with voids between particles 2 of asphalt concrete and soil 3 at a position lower than the surface of the particles 2 of asphalt concrete. It is formed by arranging a large number of lawn seeds 4 on the surface of the soil 3. Then, by growing the seeds 4, the pavement 1 with a lawn is formed. The materials for forming the pavement 1, the construction method, and the like will be sequentially described below.

1) Materials for asphalt concrete Crushed stone type: cobblestone, maximum particle size of crushed stone: 60 mm, Binder type: Epoch D as modified asphalt D The composition of these materials is crushed stone (particle size 40-60 mm) 6
0.06% by weight, crushed stone (particle size 20 to 30 mm) 29.97% by weight, modified asphalt 4.0% by weight, sand 3.74% by weight, stone powder 2.21% by weight, arbocel ZZ 0.02% by weight. In addition, the grain size of this asphalt concrete has no openings.
100% through the 75.0 mm sieve, 90.5% through the 53.0 mm sieve, 6.2% through the 2.36 mm sieve, 6.2% through the 0.075 mm sieve. The passing rate is 1.9%.

2) Construction of asphalt concrete Construction was carried out in a construction area of 5 m ^{2 with} a construction thickness of 15 cm. Porosity between asphalt concrete particles after construction is 33
%Met.

3) Injecting material As the injecting material, 60.0% by weight of upland soil, 39.9% by weight of water,
A mixed solution of 0.10% by weight of wet keeper P was used as a water retention agent. The viscosity of this mixture is 1 as the P funnel flow value.
It was 2 seconds and the specific gravity was 1.5 g / cm ³ . In addition, the injection rate is 70 for the voids between asphalt concrete particles.
%Met. Therefore, the amount of material injected was 263 kg.

The pouring material was filled into the spaces between the asphalt concrete particles while vibrating with a bipro plate. At this time, the surface of the injected material was located 5 cm below the surface of the asphalt concrete.

4) Grass seeds Snow KB of Kentucky bluegrass was used, mixed with sand, and sprayed with a sieve of about 5 mm. The grass seeds were sprayed at 35 g per 1 m ² .

5) State of pavement surface The surface of the pavement after the completion of construction was in the shape of a honeycomb with conspicuous voids between asphalt concrete particles.

6) Lawn Growth Status 14 days after construction: Green lawn was observed in the voids between the asphalt concrete particles.

90 days after construction: A lawn was grown on the entire surface of the pavement and turned into vivid green. In this embodiment, the lawn grows on the pavement, so that the appearance becomes in harmony with nature. In addition, since the surface of the injected material is located lower than the surface of the asphalt concrete, there is less risk of damaging the lawn when a person walks on this pavement or when a bicycle or automobile runs. (Embodiment 3) Still another embodiment of the present invention will be described below.

1) Material for asphalt concrete Type of crushed stone: Porous artificial mineral (trade name: Shinopal manufactured by Bishu Kosan Co., Ltd.), maximum particle size of crushed stone: 20 mm, type of binder: Coloras SS as modified asphalt The composition of the material is crushed stone (particle size 13 to 20 mm) 5
7.00% by weight, crushed stone (particle size 5 to 13 mm) 28.50% by weight, modified asphalt 5.0% by weight, sand 6.47% by weight, Arbocel ZZ 0.03% by weight, Toda Color 300R 3.00
% By weight. In addition, the particle size of this asphalt concrete is 100% that passes through a sieve with an opening of 26.5 mm,
99.3% of the openings pass through a 19.0 mm sieve, 8.4% of the openings pass through a 2.36 mm sieve, 0.07 openings
The rate of passing through a 5 mm sieve is 3.1%.

2) Construction of asphalt concrete Construction was carried out in a construction area of 5 m ^{2 with} a construction thickness of 5 cm. Porosity between asphalt concrete particles after construction is 25%
Met.

3) Injecting material As an injecting material, a mixed solution of 65.0% by weight of mackerel soil, 34.78% by weight of water, 0.10% by weight of wet keeper P as a water retention agent, and 0.12% by weight of dichandra seed was used. The viscosity of this mixed solution is 14 seconds as a P funnel flow value, and the specific gravity is
It was 1.5 g / cm ³ . The injection rate was 80% with respect to the voids between the asphalt concrete particles. Therefore, the amount of material injected was 75.6 kg.

The pouring material was filled into the voids between the asphalt concrete particles while vibrating with a bipro plate. At this time, the surface of the injected material was located 1 cm below the surface of the asphalt concrete.

4) Lawn Seeds As described above, the seeds of Dicandra were pre-injected into the material.
12% by weight was mixed. 5) Condition of pavement surface The surface of the pavement after the completion of construction was in the shape of a honeycomb with conspicuous voids between asphalt concrete particles.

6) Lawn Growth Condition 25 days after construction: Green of Dicandra was observed in the voids between the asphalt concrete particles.

100 days after construction: Dicandra developed on the entire surface of the pavement to become vivid green. In this example, a dikandra, which is a kind of moss, grew on the pavement, and it had an appearance different from that of lawn and was in harmony with nature.

[0050]

As described in detail above, according to the first aspect of the present invention, the pavement has an excellent effect of giving a natural appearance to the appearance and achieving harmony with the nature. Further, according to the second aspect of the present invention, it is possible to obtain an excellent effect that a plant growing on the pavement is less likely to be damaged and a good appearance is maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a schematic partial cross-sectional view showing a pavement body of Example 1 embodying the present invention.

FIG. 2 is a schematic partial cross-sectional view showing a pavement body of Example 2.

[Explanation of symbols]

1 ... Pavement, 2 ... Asphalt concrete particles, 4
… Lawn seeds.

Claims (2)

[Claims] 1. A pavement on which a plant has grown, characterized in that an earth having a seed of the plant is interposed in a space between particles of asphalt concrete to grow the plant. 2. The pavement covered with plants according to claim 1, wherein the surface position of the earth is set lower than the upper surface position of particles of asphalt concrete to protect the plants. body.