KR20030032272A - Base reinforcement inorganic matrial, base stabilization method of construction to use it, earth banking method of construction to sprinkle and attach by high tension that use it and that sprinkle and attach the slope for environment restoration that use it revegetation method of construction - Google Patents

Abstract

PURPOSE: Provided is a method of ground stabilization, high pressure spray baking and slope afforestation by using inorganic materials forming large quantities of pores. Accordingly, the ground reinforcing inorganic materials has high water permeability and ventilation, helps growth of plants and improves acidified soil. CONSTITUTION: The inorganic materials for ground reinforcement comprise 10-50wt.% of CaSO4, 10-30wt.% of cement, 10-30wt.% of Al2O3, 5-20wt.% of SiO2 and 1-10wt.% of K2CO3. The soft ground is stabilized by mixing 70-95wt.% of soft clay with 5-30wt.% of inorganic materials, applying the mixture to soft ground, and compacting. Also, the soft ground with a hollow or depression is repaired by mixing 80-97wt.% of clay, 3-20wt.% of inorganic materials and water, and spraying the mixture over the soft ground under high pressure. The afforestation on the slope of soil is performed by mixing 90-99wt.% of clay, 1-10wt.% of inorganic materials, and seeds, followed by spraying the mixture over the slope.

Description

Ground reinforcement inorganic matrial, base stabilization method of construction to use it, earth banking method of construction to sprinkle and attach by high tension that use it and that sprinkle and attach the slope for environment restoration that use it revegetation method of construction}

The present invention relates to a ground stabilization method, high pressure embankment earthwork method and environmental restoration slope chamfering recording method for stabilizing the ground and soil (hereinafter referred to as the 'ground') in the civil engineering field to open the road or to create a site.

More specifically, the present invention is to provide a soil-mounted soil excavation method to manufacture soil reinforcing inorganic materials having good water retention and soil breathability using hydrochemical minerals, and to stabilize the soil and soil using them.

Conventionally, cement and gypsum and lime systems are known to be used as representative materials for civil engineering work to improve soft ground or soil.

Cement-based materials can be maintained at high strength, can be constructed by slurrying, and have excellent solidification in sandy soils.However, after solidification, the permeability is poor and therefore vegetation is impossible. There was a problem that can not be.

Gypsum-lime-based materials have the advantages of easy curing and low-cost materials in organic soils and viscous soils, but they are difficult to maintain strength for a long time and have a risk of sudden heat generation. In addition, unlike cement-based, it was not easy to solidify itself in sandy soil, and after solidification with cement-based, there was a problem in that the permeability fell and the vegetation was impossible, and it could not be re-excavated and returned to its original state.

In particular, the conventional materials as described above simply do not artificially bind and solidify the mineral particles, so that there are no voids, and therefore, there is little air permeability, and cracks easily occur due to seasonal temperature changes. There was an end to mass production of industrial waste.

In addition, the above materials are inherently microcracks due to solidification expansion or heat shrinkage during the solidification process, and furthermore, due to the solidification of the material itself, the integrity and adhesion to the ground are significantly lowered, which causes them to fall off by their own weight. A problem occurred.

In addition, by using cement, lime, and synthetic resins, there are no voids and the acidity is extremely high, so the plant cannot survive at all. There was a problem that a huge adverse effect on the natural environment, such as the oxygen is not supplied to the soil is killed.

In view of the above problems, Japanese Patent Registration No. 2925408, "Inorganic material for stabilization and soil stabilization, thick layer substrate seeding method or soil stabilization method using the same" is known.

This is an inorganic material obtained by adding and mixing cement, MS, and Al ₂ O ₃ to fly ash, and a method using the same. It is effective on moist soils by eliminating the use of materials that enhance existing acidity. There is.

However, it is very vulnerable to drying, and fly ash is used as the main raw material, so when the air is dry, the moisture dissipation becomes large, and there are many problems when trying to improve the surface layer, especially suitable for volcanic ash, the main soil of Japan. Since it is a soil reinforcement made of Masato is not suitable for most domestic soil, there was a problem that can not be used to apply.

In addition, as a method generally used for greening rock slopes, a spraying greening method is known, which includes greening soil, seeds, fertilizers, and admixtures (soil improvers, curing agents, accelerators, monolithic fires, and soil organic solids). After mixing the mixture of water and water with a predetermined thickness on the target slope surface where the wire mesh is installed as a reinforcing material is a method of recording.

This spraying greening method uses a dry curing reaction type granulating agent (material), so it takes 48 to 72 hours (2 to 3 days) to stabilize and dry and harden this time (period). In case of rainfall, problems such as loss of the mounting material occurred, and uneven granules were formed unevenly according to the mixing ratio of a separate granulating agent (substance) used to form a single grain. Measurement by)) more than 30, there is a problem such that it takes a long time until the germination because there is enough rainfall to soften by the moisture absorption of the construction surface. In addition, it was not economical because it used various kinds of expensive admixtures, and the film not only remained unstable but also poor germination occurred in the construction requiring thin layers. There were many difficulties in the implementation, such as the occurrence of (thin holes).

Conventional cancer protection methods used on rock slopes have been carried out by the shotcrete method (cement mortar mounting method) to cover the wire mesh and mount the cement mortar on the target ground such as rock surface or cavitation space. Problem occurred, and the cement mortar which was constructed by the earth pressure or weathering action was removed.

The present invention is to provide an improved ground stabilization method, high pressure attachment earthwork method and environmental restoration yarn chamfering recording method to solve the above problems.

The present invention is to produce a large amount of fine pores by the hydration reaction of the inorganic material and water to excellent permeability and breathability, and to supply the oxygen enough to the soil to enable the growth of plants, preventing the death of the soil The purpose of this study is to provide ground stabilization method using high pressure hydrated mineral, high pressure attachment earthwork method and environmental restoration yarn etch recording method.

Another object of the present invention is to maintain the hardness and strength appropriately by the voids, so that the ground stabilization method and high-pressure embankment earth process using a hydrated mineral that can suppress the occurrence of cracks even if the temperature changes with the season It is to provide environmental restoration exemption recording method.

Another object of the present invention is to hydrate the minerals that are suitable for domestic soil, using the same and similar mineral materials and masa soil, which is a common soil in Korea, to exclude materials that increase acidity as in the prior art. It is to provide the ground reinforcing inorganic materials, the ground stabilization method and the slope high pressure embankment using the same.

It is another object of the present invention to improve the integrity and adhesion (adhesiveness) with the ground by using the hydration reaction of the inorganic material and the moisture in the ground and ground stabilization method using a hydrated mineral that is capable of high-pressure mounting soil on any slope It is to provide high pressure soil excavation method and environmental restoration yarn chamfering recording method.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description.

First, the basic configuration of the inorganic material for reinforcing the ground according to the present invention. The present invention is an anhydrous gypsum (CaSO ₄ ), in the existing ground reinforcing material containing cement, silica, aluminum oxide (Al ₂ O ₃ ), It is a well-known feature to add cement, aluminum oxide (Al ₂ O ₃ ), silica (SiO ₂ ), and potassium carbonate (K ₂ O).

In particular, anhydrous gypsum (CaSO ₄ ) is 10 to 50wt%, cement is 10 to 30wt%, aluminum oxide is 10 to 30wt%, silica (SiO ₂ ) is 5 to 30wt%, potassium carbonate (K ₂ O) 1 ~ It is characterized by the addition of 10wt%.

Anhydrous gypsum (CaSO ₄ ) is to maintain the fine powder dispersed in the colloidal state in water. It reacts with water to cause hydration reactions, and it is cured with mineral hydration reactions such as mono-edrinite and calcium silicate hydrates.It activates cement and pozzolanic reactions, which not only affects fluidity, but also neutralizes alkaline acidic soils. It is most desirable to mix 10 ~ 50wt% with other inorganic compounds while affecting the improvement of physical properties.

Cement is cured to hydrate by reacting with water in the present invention, activating the lime silicate hydration reaction and pozzolanic reaction to produce edringite (3CaO · Al ₂ O ₃ + 3CaSO ₄ · 32H ₂ O) as well as It serves to maintain the strength, it is most preferable to add 10 ~ 30wt%.

When aluminum oxide (Al ₂ O ₃ ) is mixed with each component according to the present invention, it becomes a polymer by the polycondensation ion of aluminum, which is dissolved in water and becomes an electrolyte and is dispersed in a colloidal phase. It is to serve to make it, it is most preferable to add 10 ~ 30wt%.

Silica (SiO ₂ ) is crystallized and dispersed when it meets with water, and when each component is hydrated, it is placed in the middle of the single grain to increase the strength of the single grain. It is preferable to mix 1-10 wt%. Do.

Potassium carbonate (K ₂ O) is effective in making poorly soluble silicic acid prevent fertilizing the soil while fertilizing the calcined silica, and it is most preferable to mix 1 ~ 10wt%.

Each of the inorganic materials according to the present invention are the same friendly members as silicic acid (SiO ₂ ) and aluminum oxide (Al ₂ O ₃ ), which are the main constituents of the mass of clay soil, which is the weathered granite, which occupies two thirds of the total area of Korea. It is composed of bovine and has the property of maintaining the hydration reaction, water-resistant granulation and proper strength by mixing the inorganic materials.

When the mixing ratio of the inorganic material is less than the presentation ratio, the efficacy may be lowered. On the other hand, when the mixing ratio is more than the presentation ratio, the high strength and hardness are unnecessarily increased due to the excessive action, which is not suitable for the environment and uneconomical due to the high cost. Therefore, it is most preferable to mix in the presentation ratio.

In addition, when each inorganic material is mixed, a hydration reaction occurs, forming needle crystals that combine fine soil particles of the target ground and soil, and forming porous pores, so that each particle is adhesively hardened to surround the particle surface without being grouped. Hydration compound by edringite formation Fills in the pores between a large number of particles, resulting in complex porous granules to maintain its hardness and strength.

Therefore, the finished granules are made of porous material that maintains strength and constant hardness, and thus contain moisture in the soil, thereby permanently maintaining the granular effect excellent in breathability and water retention.

Soil reinforcing inorganic material according to the present invention obtained as described above is used to carry out soil improvement work to convert to a stable ground and high quality soil by scooping and mixing a predetermined amount in supersaturated soft ground or poor soil. Lose. For example, when a mineral material is mixed with predetermined soil, it is attached to a space or cavity generated by dropping or collapse of various slopes by a dry attaching machine (also called ariva) at a mounting pressure of 5 to 10 kgf / cm ³ . It can be restored to stabilized improved filling soil having permeability based on high order hardening reaction, and it can be applied high pressure installment earth process which integrates with surrounding ground and has its own strength.

In addition, it is possible to carry out the installation greening method using inorganic materials for soil reinforcement. By analyzing the soil in the forests of Korea, artificial soil and organic fertilizer are artificially mixed so that the soil granularity and organicity are similar. Soil-ized soil (forest soil) is prepared, and the forest soil and mineral reinforcement for ground reinforcement are mixed with water, and the seeds are mixed into the input slurry and sprayed (installed) on the greening target surface. As the block granulation proceeds to be elastically coated and coated on the target surface, the greening method is mixed and the greening method for environmental restoration recording can be performed.

The above ground reinforcing inorganic material according to the present invention and the high-pressure mounting earth work method and mounting recording method using the same will be more clearly understood by the following examples and construction examples.

Example 1

Anhydrous gypsum (CaSO ₄ ) (manufactured by Yeocheon Gypsum) 40wt%

Cement (Portland Cement) (Hyundai Cement Co., Ltd.) 30wt%

Aluminum oxide (Al ₂ O ₃ ) (domestic) 14wt%

Silica (SiO ₂ ) (Norway Acid) 15wt%

Potassium Carbonate (K ₂ O) (domestic) 1 wt%

By mixing each of them to prepare an inorganic material for ground improvement according to the present invention.

Construction example 1

18,000 kg (5% soil weight ratio) of the inorganic material for soil improvement according to Example 1 and the soft soil excavated with a soft soil length of 20m, a width of 7m, and a depth of 1.5m (210m ³ ) by an excavator well The mixture was backfilled into the excavated puddle and compacted with an excavator track. When the construction was carried out, the excavator was a little difficult to run, but after an hour, it was stabilized so that the driving could be carried out smoothly. It was confirmed that the state was almost the same as.

Application Example 2.

In punghwaam slopes for the entire vertical width and 30m in point 5 ~ 8m of 70m, an average depth of 2.5m, about 120m ³ per soil improvement of cancer gyeolri General just before the rainy season if the joint of the road slope collapse caused by Massa dropped the soil m3 After mixing the inorganic material 5% by weight of earth and sand, the mixture was sufficiently mixed, and then sprayed at a high pressure (installation) by adding appropriate water to the mixture, which was carried out using an Ariva machine, to complete the filling soil (120m3). After completion of construction and completion of construction, no dropping or loss of filling soil occurred, and the modified soil attached to the site was stabilized by hydration reaction, water-resistant short formation and hardening reaction, and bonded in an integrated state with the surrounding ground. After three days of construction, the rainy season began to fall, but there were no signs of sagging, cracking, or loss, and it was confirmed that it was more solid after the rainy season. No traces of phenomena and surface changes could be found, and the plants were germinated and grown.

As a result, the present invention was found to be able to restore the stable and environmentally friendly to the original state by removing the additional damage of the surroundings and plant growth.

Example 2

Anhydrous gypsum (CaSO ₄ ) (manufactured by Yeocheon Gypsum) 57wt%

Cement (Portland Cement) (manufactured by Hyundai Cement) 14wt%

Aluminum oxide (Al ₂ O ₃ ) (domestic) 5.7 wt%

Silica (SiO ₂ ) (Norway Acid) 21.4wt%

Potassium Carbonate (K ₂ O) (domestic) 1.42 wt%

By mixing each of them to prepare an inorganic material for ground improvement according to the present invention.

Construction example 3

In addition, a separate forest soil (soil similar to soil in mountain forests) was prepared as follows, and the forest soil was prepared by mixing ³ m ^{3 of} selected masato, 200 kg of peat, 100 kg of organic fertilizer, 20 kg of compound fertilizer, and 10 kg of charcoal powder. .

Single cocoon quality Masato slope of about 150m2, the same field 1: the ground mineral material and forestry field slope 1 using the soil for improving the mounting construction to not rip inclined slope of 0.7 50m ^2, slopes of the system 200m ² was performed.

In the construction, a wet attacher (a tank capacity of 4,000ℓ) was mobilized, and 1,500ℓ of water, forest soil, and mineral materials were added to the inside of the tank first, and then the vegetation seeds were added and mixed to obtain a kneaded dough mixture. This mixture was mounted on the slope. When it was installed, it was bonded smoothly. The thickness was 120m ^{2 at} 1cm (1 tank capacity), 50m ^{2 at} 3cm at the ^2nd , 30m ² at 5cm at the 3rd, but all adhered well. In the third embodiment, when 3 hours had already elapsed, it was possible to confirm that the curing had sufficiently proceeded due to the water-resistant high granulation by the hydration reaction, and the water was sprayed using a conventional water sprayer on the entire mounting surface the following morning. No loss occurred.

After 5 days of hardening of the surface dry, the hardness of the acid hardness tester was determined to be 24, and after 3 weeks of construction, the seed germination and growth of the whole surface were confirmed.

As can be seen from the actual construction examples as described above, the inorganic material for soil improvement according to the present invention is composed of a mixture of hydration-reactive materials to form edringite and mono-edrinate by rapid hydration of each material component. Hydration reaction product is formed quickly, so that water-resistant granules are formed in the state of enveloping soil particles, and the formed granules are needle-shaped crystals, which are complicated net-like granules to maintain their hardness and strength, thereby ensuring breathability and water retention. In addition, it is confirmed that this unit is not only environmentally friendly but also economical because it has the property of permanently lasting and the property of hydrating the reaction component itself. Therefore, it is possible to improve damaged slopes and acidified soil of gneissic weathered massa soil, which occupy two-thirds of the country's territory, and to implement environmentally friendly greening without heterogeneity.

As described above, the soil reinforcing inorganic material according to the present invention, the ground stabilization method and the high-pressure earthwork method using the same, by using the hydration reaction of the inorganic material and water to generate a large amount of pores, so that the permeability and breathability is excellent, soil By supplying oxygen to the plant, it is possible to grow plants and prevent the death of soil.

In addition, since the present invention uses the same inorganic material as the soil of Korea as its main component, it is possible to exclude the use of the material for acidifying the existing soil.

In addition, the present invention can maintain the hardness and strength appropriately by forming a large amount of voids, and thus it is possible to suppress the crack caused by the temperature change according to the season.

Claims (8)

In the ground reinforcing material containing cement, silica, aluminum oxide (Al ₂ O ₃ ), An inorganic material for ground reinforcement characterized by mixing anhydrous gypsum (CaSO ₄ ), cement, aluminum oxide, silica (SiO ₂ ) and potassium carbonate (K ₂ CO ₃ ). The method of claim 1, Anhydrous gypsum (CaSO ₄ ) is 10-50wt%, cement is 10-30wt%, aluminum oxide is 10-30wt%, silica (SiO ₂ ) is 5-20wt%, potassium carbonate (K ₂ CO ₃ ) is 1-10wt Soil reinforcement inorganic material, characterized in that the mixture by%. Inorganic reinforcing materials containing anhydrous gypsum (CaSO ₄ ), cement, aluminum oxide, silica (SiO ₂ ) and potassium carbonate (K ₂ CO ₃ ) were added to the soft soil containing water, and then mixed with soft ground. Ground stabilization method using inorganic materials for ground reinforcement, characterized by stabilizing the ground The method of claim 3, wherein A ground stabilization method using inorganic soil material for reinforcing soil, characterized in that the mixing ratio of soft soil and mineral material for soil reinforcement is 95 ~ 70wt% of soft soil and 5 ~ 30wt% inorganic material. Ground reinforcement inorganic material, characterized by mixing the soil reinforcement and general soils, and adding a small amount of water to the mixture, and filling the soil with soil so as to be applied to the target ground at a high pressure by the usual high-pressure mounting soil method. High pressure mounting soil method using The method of claim 5, A high pressure earthwork method using soil reinforcement inorganic material, characterized in that mixing ratio of general soil and mineral material for reinforcement of soil is 97 ~ 80wt% of general soil and 3 ~ 20wt% of soil reinforcing inorganic material. The soil reinforcement of the soil reinforcement using the soil reinforcing inorganic material, characterized by mixing the mineral reinforcing soil material in the forest soil for environmental restoration, and putting the plant seeds into the mixture to spray on the greening target surface. Method. The method of claim 7, wherein An environmental restoration slope mounting method using the soil reinforcing inorganic material, characterized in that the mixing ratio of the forest soil for environmental restoration and the inorganic material for soil reinforcement is mixed with 99 to 90 wt% of forest soil and 1 to 10 wt% of inorganic material.