KR100508388B1 - Stabilizer for wet soil to be used for afforestation of steep slopes - Google Patents

Abstract

The present invention is used in addition to the soil used in the greening of the surface, it is used to properly control the soil granulation, to prevent the erosion of the soil attached to the surface to a minimum, and further to maintain the optimum hardness of the artificial soil It relates to a wet soil stabilizing composition. Wet soil stabilizing composition of the present invention by weight ratio of silicon dioxide 5-10%, charcoal powder 10-20%, calcium oxide 10-30%, chaff ash 5-10%, acrylamide compound 10-20%, aluminum sulfate One or both of magnesium peroxide combined add up to 5-20% and water soluble silicic acid 10-30%.

Description

Stabilizer for wet soil to be used for afforestation of steep slopes}

The present invention relates to a wet soil stabilizing composition for the greening of the surface used for steep slopes (generally referred to as "law") formed by incisions in mountainous areas, more specifically, artificial soil used for greening of the surface A wet soil stabilizing composition for surface greening, which can be used in addition to appropriately controlling soil granulation, minimizing erosion of soil mounted on the surface, and further maintaining optimal hardness of artificial soil. will be.

The road construction, civil engineering works for the construction of apartment complexes or industrial complexes form a considerable number of slopes in the mountains. Such steep slopes not only make the viewer visually unstable, but also during the rainy seasons such as during the rainy season. There is a risk of falling and falling. The most common way to solve this problem is to record the video. The reason for this is that by recording the legal surface, not only the natural scenery can be used to solve the visual anxiety, but also more fundamentally, it is possible to prevent the collapse of the legal surface due to weathering and scour (space caused by depression, etc.).

There are two main methods for recording the law, one of which is an external method of installing civil structures and the other is an internal method of law. The two methods must be properly implemented to complement each other to achieve the desired results of the legal greening method. In order to help the understanding of the present invention, a general law recording method will be described first.

There may be a steep slope in mountainous areas due to civil engineering, etc. Even if the steep slope is left untouched, even if it is not considered to damage the natural beauty, there is a high risk of collapse due to rain or leaching of groundwater. In order to prevent this, first, a stepped ridge side opening is formed on the cut surface to prevent scouring from the surface. Then, a metal or natural fiber net is attached to the inclined surface, and artificial soil is attached thereto.

As the artificial soil used for this, a fertilizer component, a seed, and an artificial soil stabilizer are mixed with the underlying soil (hereinafter referred to as "base soil"). As a base soil, it is used to mix masato or ocher in general soil made of clay and sandy soil and mix vermiculite, zeolite, diatomaceous earth, etc., and in some cases, materials such as cotton or paper fiber can keep moisture for a long time. It can also be used in combination.

As a fertilizer ingredient included in artificial soil, potato starch, soybean meal, barley straw compost, etc., from which starch is removed, may be used (see Japanese Patent Application Laid-Open Nos. Hei 3-180618 and Hei 3-180619). Light aggregates, briquettes, sawdust, cement, calcined lime, etc. may be used for composting (see Korean Patent Publication No. 96-1830), peat, sludge cake, pulp sludge, sawdust, earthworm powder, viscous microorganisms, etc. It is also possible to use a mixture (see Korean Patent Publication No. 96-3573).

The artificial soil stabilizing composition is a chemical agent capable of adhering the artificial soil to the surface of the artificial well and at the same time well resisting erosion by rain or the like, or maintaining an appropriate hardness. When the artificial soil stabilization composition is not used, after the artificial soil is mounted on the surface, the soil is easily separated from the surface by rainwater or eluted groundwater, or eroded by rainwater, thereby preventing the plant from growing properly.

As described above, when attaching the artificial soil mixed with various elements to the surface and the net installed thereon, the high pressure mounting method is mainly applied, and the artificial soil is attached to the surface by spraying using a compressor capable of high pressure spraying. . There are two types of artificial soils: dry and wet soils. Dry soils contain a minimum amount of moisture, and they are highly adherent to the surface under high pressure, but the germination and growth of plants is minimal. There is a problem that causes problems, and wet soil has an advantage in plant germination and growth after mounting by providing enough moisture, but when the wet soil is mounted on the surface, it flows without attaching to prevent difficulty in construction. There is a problem that results.

On the other hand, as described above, artificial soil contains plant seeds in advance, it is common to include a mixture of plant seeds of herbs, shrubs and forests in a certain ratio in order to induce natural transition. This plant seed, including herbaceous plants, shrubs, and forests, can be developed as soon as possible by the herbaceous growth and primary greening of the surface, and after a certain period of time, shrubs grow, replacing herbaceous plants, and then over a period of time. Afterwards, forests will replace shrubs. Herbs obscured by the growth of shrubs are obscured, and for the same reason, when forests grow, the shrubs obscured by the shade are culled. This transition of plants causes vegetation to be green, with herbaceous plants, shrubs, and forests as well-balanced natural flora.

The present invention relates to an artificial soil stabilizing composition used in artificial soil, in particular wet soil, among the various elements used in the above greening method. As mentioned above, the artificial soil stabilizing composition should be capable of adequately controlling soil granulation, preventing excessive erosion and further maintaining optimal hardness, and if the artificial soil stabilizing composition does not perform this role properly, it will be green. Business can go back to failure. Therefore, a considerable amount of research has been conducted on the artificial soil stabilizing composition, but the situation is not yet satisfactory.

For example, Korean Patent No. 353923 describes 10-80% by weight of cement cement, 20-85% by weight of volcanic ash or tuff weathered soil (fine powder rich in soluble silica), 1-10% by weight zeolite and 1-10% by weight of diatomaceous earth. %, And a mixture of 1-20% by weight of gypsum and a mixture of 1-20% by weight of aluminum powder, 10-90% by weight of vermiculite and 1-15% by weight of a fire ash, in a ratio of about 4: 1. It is suggested to mix with.

The mixture of the above patents is excellent in promoting the granulation of artificial soil and strengthening the hardness. However, this mixture is highly hygroscopic due to the use of highly moisturizing volcanic ash or tuff weathered soil, zeolite, diatomaceous earth, and semi-mineral gypsum, but it does not improve the coagulation force. There is a problem that it is difficult to apply to the construction method attached to the law. In addition, the cement is used in the mixture in order to improve the adhesion between the particles, the cement has a problem that it may cause the germination and growth of the plant because it has a considerable toxicity.

The present invention was devised to solve the problems of the prior art as described above, and an object of the present invention is to appropriately control the granulation of artificial soil, to minimize the erosion of the soil mounted on the surface, and to optimize the artificial soil. It is possible to maintain the hardness, and further to provide an artificial soil stabilizing composition harmless to the germination and growth of plants.

The artificial soil stabilizing composition of the present invention can be used in various artificial soils, and on the other hand, by being composed of components harmless to plants, plant seeds (herbaceous plants, shrubs, forests, etc.) in accordance with the plant ecological environment around the greening target ) Can be applied to artificial soil mixed properly.

In addition, the present invention is to improve the cohesion or cohesion of the artificial soil, so that the artificial soil can be used in the manner of wet soil in the high pressure mounting (fiber or metal mesh) installed on the surface. Therefore, the present invention is intended to be beneficial to the germination and growth of plant seeds by having sufficient moisture in the artificial soil (relative to the way of dry soil).

Wet soil stabilizing composition for the surface greening according to the present invention is silicon dioxide 5-10%, charcoal powder 10-20%, calcium oxide 10-30%, chaff ash 5-10%, acrylamide compound 10- 20%, one or both of aluminum sulfate and magnesium oxide combined, 5-20%, water-soluble silicic acid 10-30% is mixed.

Functions and interactions of the components used in the present invention are as follows.

Silicon dioxide is harmless to the environment, has a small particle shape having heat resistance, and in the present invention, serves as a filler in relation to other components, and functions to improve granulation with artificial soil. When the appropriate amount of silicon dioxide is 5-10% by weight based on the total composition, it can not fully function as a filler when it is 5% or less, and when it is used by 10% by weight or more (because there is no self coagulation force), May inhibit anger.

Charcoal powder has a large surface area of about 300 square meters per gram, which is an excellent function of absorbing moisture and nutrients and then releasing them slowly. Therefore, the charcoal powder can absorb moisture in the air when the air humidity is more than 60% in the case of the dry season (dryer) due to the excellent moisture adsorption power can supply the moisture to the plant roots. On the other hand, charcoal powder has a sterilizing effect and also plays a role in sterilizing germs harmful to plants. It is preferable to use 10-20% by weight of charcoal powder. The reason is that when it is used below 10%, the retention effect of moisture and nutrients is insignificant, and when it is used above 20%, it is too much compared to other components. It becomes a large amount, rather, it may interfere with the granulation and hardness improvement of artificial soil.

Calcium oxide combines with water-soluble silicic acid (to be described later) to harden artificial soils, and to prevent acidification of the soil because its components are alkaline. In particular, considering the fact that acid rain falls due to pollution such as air pollution, vegetation included in artificial soils that have just germinated and grow may be prevented from growing by acid rain before the roots are properly rooted. Alkaline is to play a role. Calcium oxide is preferably used in a weight ratio of 10-30%. If it is used in an amount of 10% or less, it may not function properly as an alkali in soil, and in case of 30% or more (in combination with water-soluble silicic acid described later) There is a risk of artificial hardening of the soil.

Rice husk ash not only enriches the soil's nutrients by supplying fiber to the soil, but also combines with moisture and calcium oxide due to the silicon contained in it, causing hydration and pozzolanic reactions, which play an important role in improving the incidence and solidification of artificial soil. Do it. The amount of chaff ash used is preferably 5-10% by weight. The reason is that when the amount is 5% or less, the effect is insignificant, and when it is used more than 10%, it is not balanced with other components. Because of this.

Acrylamide-based compounds are harmless to the environment. When combined with artificial soils, high pressure mounting on the surface improves cohesion and adhesion between the particles, preventing cracks from occurring even when dried, thereby preventing loss of moisture or nutrients contained in the artificial soil. Play a role. When using acrylamide-based compound, it is preferable to use 10-20% by weight ratio. If it is used below 10%, it is not possible to secure desired cohesion and adhesion to artificial soil particles. Too much coagulation can adversely affect the germination or growth of plant seeds.

Aluminum sulfate and magnesium oxide are nearly similar chemicals and both are harmless to the environment (in combination with the water-soluble silicic acid described later), which enhances the hardness of the artificial soil. The two are similar in nature and can be used either or in combination. Aluminum sulphate and magnesium oxide are quenched when they come into contact with water when combined with water-soluble silicic acid. Therefore, the compositions containing them are preferably brought into contact with moisture in the final step. Since these components are also contained in the present invention, they must be used in contact with artificial soil (containing a lot of moisture) just before mounting in high pressure mounting on the surface. The amount of aluminum sulfate and magnesium oxide is preferably used in a weight ratio of 10-20% (any one or both of them), and in the case of 10% or less, it is difficult to secure a desired hardness for artificial soil. When used, the hardness of artificial soil may be too high to inhibit the germination or growth of plant seeds.

As mentioned above, the water-soluble silicic acid combines with calcium oxide and aluminum sulfate or magnesium oxide to serve to solidify or harden the artificial soil, and on the other hand, to bring about the ettringite phenomenon on the surface of the artificial soil. It also prevents the evaporation of moisture from artificial soils. Sodium may be mixed with the water-soluble silicic acid within 5% by weight (relative to the water-soluble silicic acid), but when sodium is contained, the hydration or pozzolanic reaction may be more likely to be required, and thus the hardness of the artificial soil needs to be strengthened. If present, it is preferable to use a mixture of a large amount of sodium, and in the opposite case, one having a small or no sodium content. The amount of water-soluble silicic acid is preferably 10-30% by weight, and when it is 10% or less, there is a problem in that the reaction with calcium oxide, aluminum sulfate, or magnesium oxide cannot be properly performed. There is a risk of causing excessive solidification of the soil.

The present invention is a mixture of the above-mentioned components, the mixture is preferably used by mixing about 15-20 to the artificial soil 100 by weight. On the other hand, although the mixture of the present invention is prepared for application to wet soils, it causes a phenomenon of rapid freezing when it comes in contact with moisture, so it is not preferable to use the mixture with artificial soil in advance. Therefore, in the application of the present invention, first, artificial soil and water are mixed at a ratio of 1: 1, and in the case of mounting them at a high pressure, they should be mixed with each other just before being mounted on the surface through the nozzle.

That is, in the case of attaching the mixture of the present invention, a triple nozzle must be used, and there are a first nozzle on which artificial soil mixed with water is mounted, and a second nozzle on which the artificial soil stabilizing composition of the present invention is mounted. There is a third nozzle in which the two nozzles are joined, and the artificial soil and the wet soil stabilizing composition of the present invention are mixed with each other by the third nozzle and mounted on a legal surface to cause a predetermined chemical reaction.

Hereinafter, the present invention will be described by way of examples.

(Example)

In this example, the following composition ratio was prepared 150kg artificial soil stabilizing composition.

ingredient Silicon dioxide Charcoal powder Calcium oxide Chaff powder Acrylamide Compound Aluminum sulfate Water Soluble Silicate system Ratio (% by weight) 7 15 20 8 15 15 20 100

On the other hand, about 45% by weight of mixed soil, heavy metals removed, about 10% by weight Masato, about 5% by weight loess, about 10% by weight soil, about 15% by weight vermiculite and peat moss, about 15% by weight of Hylon cotton (polyester) One ton of artificial soil was prepared. Artificial soil was mixed with about 20 kg of plant seeds of herbaceous, shrub and forest. Then, the same weight (1 ton) of water was added to the artificial soil composed of these components, and the whole was mixed, and the mixed state was thin enough to flow down.

The mixture of artificial soil and water, and the stabilizing composition of the present embodiment was put into a high pressure mounting apparatus consisting of a triple nozzle. This high pressure mounting apparatus is provided with two tanks, one tank contains a mixture of artificial soil, water, and plant seeds, and the other tank contains a stabilizing composition of the present embodiment. In mounting on the surface, the mixture of artificial soil, water, and plant seeds is sprayed through the first nozzle, and the stabilizing composition is sprayed through the second nozzle, but to the third nozzle where the first nozzle and the second nozzle are combined. By doing so, they were combined and mixed and mounted on the surface at the same time. The required surface external construction such as installation of the net is completed on the front surface in advance, so that the mixture to be mounted at a high pressure is mounted on the fiber net of the installed legal surface.

Immediately after mounting the artificial soil and stabilizing composition on the surface, the granulation of artificial soil was measured. The graining was very good and there was no flow from the surface.

The external shape of the artificial soil was observed after one week without additional water supply. As a result, surface cracks were not found due to drying, and the hardness of the artificial soil was measured with a soil hardness tester seven times a week. As a result, they all belonged to the range of 20-23 mm and showed a good degree in plant growth.

On the other hand, the germination and growth of plant seeds included in the artificial soil were measured. As a result, the shoots of the herbaceous plants began to germinate from about 8 days, and the shoots of shrubs and forest plants were passed around 12 days. Germinated as well. At the end of the 20th day, greening was carried out almost all over the surface of the plant, making it possible to feel natural beauty. By the end of the 40th day, the size of herbaceous plants exceeded 10 cm and the roots of shrubs and forest plants. Began to settle in the soil.

As shrubs and woodland plants grow gradually, herbaceous vegetation obscured by the shade will gradually be eliminated, and natural herbs, shrubs, and woodlands are expected to naturally green the surface in proper proportions by natural harmony.

As described above, the artificial soil stabilizing composition of the present invention properly controls the granulation of artificial soil used for greening of the surface, prevents the erosion of the soil attached to the surface to a minimum, and further maintains the optimum hardness of the artificial soil. In particular, it can be applied to wet soil, and because of its effect and ease of use, it is very beneficial for legal greening projects.

Claims (2)

By weight ratio, 5-10% of silicon dioxide, 10-20% of charcoal powder, 10-30% of calcium oxide, 5-10% of chaff ash, 10-20% of acrylamide compounds, one or both of aluminum sulfate and magnesium oxide A wet soil stabilizing composition for a forensic greening, characterized in that it comprises 5-20%, water soluble silicic acid 10-30%. The wet soil stabilizing composition of claim 1, wherein sodium is mixed within 5% by weight in the water-soluble silicic acid.