KR101595375B1 - Composition of seed spray soil - Google Patents

Abstract

The present invention relates to a rye soil composition.
The rye soil composition according to the present invention is characterized in that the rye soil composition is sprayed on a slope which needs to be vigorously applied, and includes a performance improving agent including rye soil and cement including sludge and seed, and a pozzolan mixture for improving the strength of cement.

Description

{Composition of seed spray soil}

The present invention relates to a rye soil composition, which is an artificial soil used for vegetation and greening of an inclined surface, which is sprayed with a certain thickness on an inclined surface of a cut soil section and includes seeds of plants.

The slopes of roads, golf courses, and soil-cutting surfaces in the construction work are made of soil that is not suitable for plant growth. These areas are generally very unfavorable to plant settlement because they have no soil layers or are very low in depth. In addition, these areas are composed of sloped surfaces, which makes it easy to leach nutrients in the soil layer and not only greatly deteriorates water retention function, but also risks erosion and collapse.

In order to plant the cut surface of the soil, generally, a building block such as a lattice block is installed and a method of planting the plant by housing the soil in the space formed by the block is used. However, the landscaping block is easy to apply only to mild slopes, and it is difficult to apply the slabs to irregularities or steep slopes, and slipping occurs due to the weight of the blocks after installation.

In addition, a method has been developed in which a barbed wire fence is fixed by using an anchor on a soil cut surface or a canopy cutter and a vegetation condition is given on a barbed wire with a general soil. However, this method does not provide suitable conditions for vegetation using general soil.

In order to overcome the disadvantages of the conventional methods as described above, the greening method is used in which an artificial soil is sprayed on the slope, which is an artificial soil having excellent slope adhesion and erosion resistance.

Rye soil is generally prepared by mixing compost, sewage sludge, slaked lime and water, and includes seeds. Rye soil is usually installed on a slope by a spray method.

The performance required for Rye soil is largely represented by three. That is, the initial adhesion should be good on the slope, especially on the rock slope, and it should not be detached even after a long period of time because of its high adhesive strength, and must be permanently adhered. Finally, it should be eco-friendly to enable vegetation.

However, the currently used rye soil has a problem that it is difficult to construct due to its low adhesiveness, cracks easily occur, and strength is low, so frequent maintenance is required. Especially, due to the weak adhesion, there is a problem that the soil is lost in the rainy season.
[Prior Art Literature]
Published Japanese Patent Application No. 10-2007-0112919 (November 28, 2007)
Published Patent Publication No. 10-2009-0032266 (Apr.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a rye soil composition newly developed for allowing vegetation to be adhered to slopes, .

In order to accomplish the above object, the present invention provides a rye soil composition, which is sprayed on a slope which needs to be vigorously applied. The rye soil composition includes sludge and seeds, And a performance improving agent comprising a pozzolanic mixture.

In the present invention, the cement may be usually Portland cement, cement mixed with any one or at least two of multi-component mixed cement and hydraulic cement of two or more components.

In the present invention, the pozzolanic mixture may be a mixture of coal fly ash containing blast furnace slag fine powder, fly ash, bottom ash, paper ash, natural pozzolan fine powder, meta kaolin and silica fume, or at least two of them.

In one embodiment of the present invention, the performance improver may be further blended with a cementitious material to facilitate hydration of the cement, wherein the cementitious material is selected from amorphous calcium aluminate powder or calcium sulfoaluminate powder, slaked lime, quicklime, alumina Cement, gypsum, aluminum sulfate powder, magnesium sulfate, or a mixture of two or more of them.

Also, in one embodiment of the present invention, the performance improving agent may further include a moisturizing agent for retaining moisture in the rye soil, and the humectant may be a clay mineral such as a hygroscopic polymer or bent nite.

Meanwhile, in one embodiment of the present invention, the performance improving agent is a surfactant having air entraining property, a foaming agent for generating bubbles, and a surfactant for promoting the movement of moisture in the soil And woody fibers including coconut fibers.

Also, in one embodiment of the present invention, the performance improving agent may further include a thickener for increasing the tackiness of the rye soil.

The rye soil composition according to the present invention is superior in adhesion and mechanical strength as compared with conventional rye soil, and has an advantage of providing environmentally friendly conditions for seed growth. That is, the Rye soil composition according to the present invention satisfies all three conditions required for rye soil, namely, adhesion, mechanical strength and vegetation conditions.

The rye soil composition according to the present invention is easy to apply on the basis of tackiness and quick hardness, has increased mechanical strength and durability, has no difficulty in maintenance, and can contribute to greening by providing vegetation conditions.

Based on this effect, it is expected that it can be widely applied to the rye soil composition according to the present invention.

Fig. 1 is a table showing the composition ratios of the samples used in the experiment (Comparative Examples and Experimental Examples 1 to 5).
FIG. 2 is a table showing the material mixing ratio of the performance improving agent shown in FIG. 1; FIG.

The soil cut surface of the civil engineering work areas such as road opening and residential land development is composed of rock layers such as light rock, soft rock, weathered rock, or the soil is difficult to grow plants. These soil-cut surfaces have the risk of soil and rock loss and ground collapse when rainstorms or typhoons occur.

Therefore, concrete structure using concrete retaining wall or concrete block was mainly applied to the soil cut surface, which can solve the problem of loss of the soil on the incision surface, but the concrete structure is not compatible with the surrounding natural environment.

For this reason, in recent years, there have been many attempts at greening methods that artificially create an environment in which plants can grow on a soil-cutting surface in an environmentally friendly manner. This recording construction method is a construction method that makes an artificial condition that a plant grows naturally by spraying artificial soil called rye soil, which can promote germination and growth of plants such as lawn and wildflower, on a soil cut surface.

The present invention relates to the composition of rye soil as described above.

The performance required as rye soil is summarized as follows. First, Rye soil should have good adhesion to slopes. Generally, Rye soil is sprayed in a shotcrete pouring method. If it is not good, it is easily removed from the slope. Adhesion is determined by stickiness and fastness. That is, they must be easily adhered and hardened and stabilized within a short time.

The second performance is mechanical strength. More specifically, it is the compressive strength and the adhesion strength of the rye soil. High mechanical strength allows permanent attachment to rock slopes and maintenance is easy.

The third performance is that vegetation must be possible. Rye soil contains seeds, so vegetation conditions must be created to allow the seeds to germinate and grow. The pH of the vegetation should be close to neutrality, the porosity should be high, and the water content should be high.

It was developed with the aim of satisfying the above three conditions according to the present invention.

Hereinafter, the rye soil composition according to the present invention will be described in detail.

The rye soil composition according to the present invention is prepared by mixing rye soil and a performance improving agent with water. Rye soil contains all kinds of rye soil generally available on the market. Typically, Rye soil contains soil, sludge, compost, and seeds. Examples include 15 to 25% by weight of peat, 20 to 30% by weight of sewage sludge, 30 to 40% by weight of paper sludge, 10 to 15% by weight of granular weathered soil, compost and seed.

The characterizing feature of the rye soil composition according to the present invention lies in the performance improving agent. The performance improving agent is intended to express the above three performance conditions. The performance improving agent is mixed at a ratio of 1 to 50% by weight, preferably 3 to 20% by weight, based on the rye soil.

Performance improvers include cement, pozzolanic blenders, quick hardwoods, moisturizers and additives for vegetation environments.

Cement is used as a material for increasing the mechanical strength of the soil composition. More specifically, it is possible to use any one of, or a mixture of, ordinary portland cement, multi-component mixed cement such as slag fine-powder cement or fly ash cement, and hydraulic cement such as dentifrice powder cement. The cement may be mixed in the range of 10 to 80% by weight in the entire performance improver.

The pozzolanic mixture contributes to the development of the strength of the rye soil composition with the cement. That is, in the present invention, the strength of the rye soil composition is guaranteed through the cement and pozzolan mixed materials. Although the strength of the Rye soil composition can be guaranteed to be more than a certain level by using only cement, if the amount of cement is increased, it may have an adverse effect on seed germination or vegetation due to the influence of alkali ion eluted from the cement. Therefore, the present invention uses a pozzolanic mixture which contributes to the strength development but hardly dissolves alkaline ions. In one example, the pozzolanic blend is blended in the range of 10 to 45% by weight in the total performance improver.

In this embodiment, as the pozzolanic mixed material, coal fly ash such as blast furnace slag fine powder, fly ash and bottom ash powder, paper ash, natural pozzolan fine powder, meta kaolin and silica fume may be used singly or in combination.

It is preferable to mix the thickener with the performance improving agent to increase the tackiness of the rye soil composition. As the thickening agent, a urethane-based thickener which is not influenced by pH, cellulose or an inorganic thickener such as HPMC (Hydroxypropyl Methyl Cellulose) may be used.

On the other hand, the performance improving agent includes a high-hardness material so that quick hardness, which is a moderate performance, can be expressed with respect to the adhesion of the rye soil composition. The hardwood accelerates the hydration of cement and causes a rapid hydration reaction by itself, so that the mechanical strength of the rye soil composition is manifested very quickly. In the present embodiment, examples of the core material include amorphous calsium aluminate (ACA) powder, calcium sulfo-aluminate (CSA) powder, slaked lime, alumina cement, gypsum, aluminum sulfate powder, magnesium sulfate May be used singly or in a mixture of two or more. For example, calcium sulphoaluminate powder and gypsum may be mixed in a ratio of 6: 4 as a primary hard material. And, the hardness of the hardwood is different due to the difference of specific surface area according to the degree of powder. The higher the degree of powder, the better the fastness. In this embodiment, a material having a blaine value of 5,000 cm ² / g of calcium sulfoaluminate and 3,000 cm ² / g of gypsum is used. The hardwood is mixed in the range of 10 to 45% by weight, preferably in the range E 'to F' in the entire performance improver.

In addition, the performance improving agent includes a humectant. The moisturizing agent plays a very important role in forming a condition in which the rye soil composition is vegetable. As the moisturizing material, a highly hygroscopic polymer may be used. Clay minerals such as bentonite with high water content may also be used. Further, woody fibers such as cocoa fibers, paper fibers and the like may be used singly or in combination as a material for mediating the movement of water in the rye soil composition.

The important point in the formation of vegetation conditions is that air should be supplied into the soil composition and voids should be formed in the soil composition.

In the present invention, an ionic or non-ionic surfactant having air entraining property and a foaming agent capable of generating bubbles by reacting with other components of the performance improving agent are mixed so as to supply air into the soil composition. The air entraining agent provides air in the soil composition and the surfactant or the foaming agent forms pores in the soil composition to form conditions necessary for seed germination and growth.

The materials for forming the vegetation conditions, including the moisturizing agent, the air entraining agent and the blowing agent, are mixed in the range of approximately G to H% by weight throughout the performance improving agent.

As described above, the rye soil composition according to the present invention includes sow soil, rye soil containing compost and seed, and performance improving agent. The performance improver increases the adhesion and mechanical strength of Rye soil and creates an environment suitable for biological growth.

Also, in the present invention, latex or acrylic polymer can be used to enhance the durability of the rye soil composition. In order to improve the vegetation environment, the eco-friendly material developed by the present applicant, patent registration No. 972665 " (Trade name "EGC") may be additionally used.

Conventionally, due to consideration of vegetation environment, the mechanical strength and adhesive property of Rye soil is considerably lowered. However, in the present invention, the mechanical strength and adhesion are increased by using cement and pozzolan mixed material, By using the available materials, we tried to solve both problems.

The present inventors conducted experiments on the performance of the Rye soil composition according to the present invention.

FIG. 1 is a table showing the composition ratios of the samples used in the experiments (Comparative Examples and Experimental Examples 1 to 5), FIG. 2 is a table showing the material mixing ratios of the performance improving agents shown in FIG. 1, to be.

Referring to FIG. 1, the same rye soil was used in the comparative examples and the experimental examples used in the experiment, and the amount of seeds and the amount of seeds used were also matched. In Comparative Examples, no performance improving agent was included. In Experimental Examples 1 to 5 in which the present invention was implemented, the performance improving agent was mixed at 10% by weight with respect to the rye soil.

In Experimental Examples 1 to 5, the performance improvers differed in the detailed composition as shown in the table of FIG. That is, in Experimental Example 1, only ordinary Portland cement was used as a performance improving agent. In Experimental Example 2, fly ash mixed with pozzolan was added in addition to ordinary portland cement. In Experimental Example 3, , A moisturizing material was used together with cement. Finally, in Experimental Example 5, ordinary Portland cement, fly ash, quick hardwood and humectant were all used.

In hardwoods are the gypsum powder of Blaine value 5,000Cm ² / g calcium sulfo aluminate powder, Blaine value 3,000Cm ² / g of a 6: were mixed in a weight ratio of 4. As the moisturizing material, the highly hygroscopic resin, hisobead, was pulverized to have a blaine value of 1,000 cm ² / g.

In the experiment, the compressive strength, pH, water content (% by weight) and seed germination of each sample were measured.

In other words, from the germination photographs of the seeds of FIGS. 3 to 5, it was confirmed that the rye soil composition according to the present invention provides excellent conditions for seed germination and growth.

Based on the above-mentioned experimental results, it was confirmed that the rye soil composition according to the present invention has better adhesion and mechanical strength than conventional rye soil, and also provides environment-friendly conditions for seed growth.

That is, since the Rye soil composition according to the present invention satisfies all the three conditions required for Rye soil, it is easy to construct based on the stickiness and quick hardness, the mechanical strength and durability are increased, So that it can contribute to slope recording.

Based on this performance, it is expected that it can be widely used industrially in a rye soil composition according to the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (9)

It is applied to the slope which needs to record,
Rye soil containing sludge and seeds; And
A performance improver comprising cement and a pozzolanic blend enhancing the strength of the cement,
In the performance improving agent, the cement is mixed in a ratio of 10 to 80% by weight,
The performance improving agent includes both a surfactant having air entraining property, a foaming agent for generating bubbles, and a woody fiber including coconut fiber for promoting the movement of water in the soil, In addition,
Wherein the performance improving agent further comprises a thickening agent for increasing the tackiness of the rye soil. The method according to claim 1,
Wherein the cement is a cement mixed with at least one of Portland cement, multi-component mixed cement of two or more components, and hydraulic cement. The method according to claim 1,
Wherein the pozzolanic mixture comprises at least one of fly ash, fly ash, bottom ash, paper ash, natural pozzolan fine powder, meta kaolin, silica fume, or at least two blends of blast furnace slag fine powder, fly ash and bottom ash. The method according to claim 1,
Characterized in that the performance improver is further blended with a cementitious material to facilitate hydration of the cement. 5. The method of claim 4,
Wherein at least one or more of the amorphous calcium aluminate powder or calcium sulfoaluminate powder, slaked lime, quick lime, alumina cement, gypsum, aluminum sulfate powder and magnesium sulfate are mixed. The method according to claim 1,
Wherein the performance improving agent further comprises a moisturizing agent for retaining moisture in the rye soil. The method according to claim 6,
Wherein the moisturizing material is a hygroscopic polymer or a clay mineral. delete delete

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