KR20160049066A - Soil composition with improved insulating property - Google Patents

Abstract

The present invention relates to a soil composition including a soil composition hardening agent and zeolite, and more particularly, to a soil composition which is eco-friendly, and has high strength and excellent heat insulating performance, wherein the soil composition includes at least one of the group consisting of a mixture of chloride and inorganic oxide, coffee and wood, a soil composition hardening agent having ethylene glycol and zeolite.

Description

TECHNICAL FIELD [0001] The present invention relates to a soil composition having improved heat insulation performance,

Field of the Invention The present invention relates to a soil composition with improved heat insulation performance, and more particularly to a soil composition with improved heat insulation performance, including various natural soil aggregates and zeolites around the site.

There is a problem of interrupting the heat inside and outside in order to reduce the heating and cooling costs and to make the living space comfortable. If the difference between indoor and outdoor temperatures occurs, the surface temperature of the part where the insulation performance of the building deteriorates falls below the dew point temperature, and condensation phenomenon occurs in which the water vapor in the air becomes water droplets and sticks to the surface . If such a condensation phenomenon occurs, the indoor finish material having poor water resistance performance such as wallpaper or paint applied on the inner wall of the building is peeled or decayed, thereby causing bacteria such as molds harmful to the human body to propagate, thereby greatly impairing the indoor environment of the building . In order to reduce the cooling and heating costs and to prevent such condensation, materials with high resistance to heat flow are used during construction of the building.

The insulation structure of a building can be roughly classified into an inner insulation type and an outer insulation type. Among them, the heat insulation system is a system in which a heat insulating material is charged from the inside of a wall to a room side or a gap of a structure. In the case of the external heat insulation system, a heat insulating material is installed outside the structure. Usually, Method is adopted. Insulation of buildings is selected by using insulation material which is suitable for structure and properties according to the characteristics of construction site. Examples of such insulation materials are glass fiber, rock surface, urethane foam, styrofoam, and insulation mortar.

In case of mortar, insulation can be applied by putting it on the wall surface with a finishing material. Concrete used as a raw material for general construction and civil engineering works is manufactured by adding various additives to mortar to improve the performance, and it is possible to improve the heat insulation performance through it. For example, Korean Patent Registration No. 10-0813152 discloses a concrete panel having improved heat insulation and fire resistance by mixing foamed polystyrene beads with improved heat insulation and fire resistance in cement mortar. However, the above technology has a problem that it is difficult to manufacture a high-strength concrete panel, and the manufacturing cost of the concrete panel rises.

Korean Patent No. 10-0813152 (Mar. Korean Patent Publication No. 10-1992-0002287 (1992.2.28)

It is an object of the present invention to provide a soil composition that is environmentally friendly, has high strength, and has improved heat insulating performance.

According to one aspect of the present invention, there is provided a curing agent for a soil composition comprising a mixture of a chloride and an inorganic oxide, at least one selected from the group consisting of coffee and wood, and ethylene glycol; Zeolite; soil; cement; And water. The soil composition of the present invention has improved heat insulation performance.

In addition, the mixture of chloride and inorganic oxide may comprise ammonium chloride, magnesium chloride, calcium chloride, sodium chloride, magnesium magnesium, and ferric chloride.

In addition, the curing agent for the soil composition may further comprise fluorite.

The curing agent for the soil composition may further comprise 7 to 23 wt% of ammonium chloride, 7 to 23 wt% of magnesium chloride, 4 to 20 wt% of calcium chloride, 3 to 12 wt% of sodium chloride, 3 to 7 wt% of magnesium chloride, , At least one 11 to 50 wt% selected from the group consisting of coffee and wood, and 3 to 8 wt% of ethylene glycol.

In addition, the curing agent for the soil composition may further comprise 10 to 25 wt% of fluorite for 100 wt% of the curing agent.

In addition, the curing agent for the soil composition may be solid.

In addition, the curing agent for the soil composition may further comprise a transparent aqueous waterproofing liquid.

The zeolite may also have a particle size of 150 to 250 mesh.

In addition, the soil may comprise loess.

In addition, the zeolite, soil and cement may be contained as a powder mixture.

In addition, the powdery mixture may comprise 5 to 40 wt% of zeolite, 30 to 80 wt% of soil, and 15 to 30 wt% of cement.

In addition, 0.01 to 0.1 part by weight of a curing agent for a soil composition may be contained in 100 parts by weight of the powdery mixture.

Water may be included in an amount of 20 to 45 parts by weight based on 100 parts by weight of the powdery mixture.

The soil composition according to one aspect of the present invention can be used for construction and repair of residential building structures which are improved in heat insulation, flame retardancy and fire resistance, and are safe for fire and reduce heating cost.

The soil composition according to one aspect of the present invention has a heat insulating property and is a high strength material, so it can be used as a substitute for cement concrete when building a building structure. This reduces the manufacturing cost and manufacturing time since the need for separate subsequent insulation is reduced.

The soil composition according to one aspect of the present invention can be used to produce a building structure using local soil at a construction site, so that manufacturing cost and manufacturing time can be reduced as compared with the conventional concrete composition.

The soil composition according to one aspect of the present invention can neutralize and deodorize harmful heavy metals contained in the soil by the ion substitution effect between the soil and the curing agent for the soil composition, so that an environmentally friendly building structure can be manufactured.

The soil composition according to one aspect of the present invention is an eco-friendly material in which harmful heavy metals are not detected and is preferably applied to buildings of residential use. Secondary environmental pollution due to recycle and landfill disposal can be reduced .

The present invention relates to a curing agent for a soil composition comprising a mixture of a chloride and an inorganic oxide, at least one selected from the group consisting of coffee and wood, and ethylene glycol; Zeolite; soil; cement; And water. The present invention relates to a soil composition having improved heat insulation performance.

Hereinafter, the present invention will be described in more detail.

In the soil composition with improved heat insulation performance of the present invention, the curing agent for soil composition is a material containing chloride and inorganic oxide, and serves to mix and cement aggregate such as sand with cement. The curing agent for a soil composition of the present invention comprises a mixture of chloride and inorganic oxide, at least one member selected from the group consisting of coffee and wood, and ethylene glycol, so that the soil composition comprising the curing agent for the soil composition, It is possible to exhibit high strength characteristics even when the whole is replaced with a particulate soil having a particle size of 5 mm or less.

The mixture of the chloride and the inorganic oxide may be a mixture of compounds known in the art. For example, the mixture of chloride and inorganic oxide may be a mixture comprising ammonium chloride, magnesium chloride, calcium chloride, sodium chloride, magnesium acetate, and ferric chloride. Ferric chloride acts as a curing catalyst. The curing agent for the soil composition of the present invention may contain ferric chloride, which is more stable than ferrous chloride, as a curing catalyst in the curing agent in order to reduce the side reaction during the oxidation reaction.

Cement hardening is a chemical reaction that can cause toxic components that are harmful to the human body due to side reactions during the reaction. The curing agent for a soil composition of the present invention includes at least one selected from the group consisting of coffee and wood which are natural-friendly vegetable materials, thereby reducing the side reaction during the curing reaction, thereby improving the safety of the soil composition. In addition, at least one selected from the group consisting of coffee and wood neutralizes and deodorizes the toxic substance, so that when contained in the soil composition, the physical properties of the soil composition are changed ecologically to be harmless to the human body. Further, the curing agent for soil composition of the present invention includes at least one selected from the group consisting of coffee and wood, thereby improving the binding force between the soil particles and improving the density of the soil. Preferably, at least one selected from the group consisting of coffee and wood is dried and then pulverized and added in powder form.

The coffee may be a fruit of coffee or a powder obtained by pulverizing a coffee tree. The fruit of the coffee may not be roasted or roasted, and it may be coffee residue left after extracting the coffee beverage.

The timber may be a stem and a branch of a tree which is dried to reduce the moisture content. In addition, in terms of selecting a material having a low water content and a low manufacturing cost, a pasture (dead tree) of 1,000 to 1,500 m in high- .

The ethylene glycol can improve the curing efficiency. When hydrogen is generated by the hydrothermal reaction, heat is generated, and the curing reaction rate can be improved by the generated heat.

Wherein the curing agent for the soil composition comprises 7 to 23 wt% of ammonium chloride, 7 to 23 wt% of magnesium chloride, 4 to 20 wt% of calcium chloride, 3 to 12 wt% of sodium chloride, 3 to 7 wt% of magnesium chloride, 1 to 5 wt% And at least one 11 to 50 wt% selected from the group consisting of wood and 3 to 8 wt% of ethylene glycol. When each component of the curing agent listed above is included in the above content range, the curing agent for soil composition and the soil particle are excellent in adhesion and crosslinking property, so that the environmentally friendly property and high strength property of the soil composition containing the curing agent for the soil composition are improved .

If necessary, the curing agent for the soil composition may further comprise fluorite.

The fluorite is a natural stone containing calcium fluoride as a main component and can improve the curing rate of the curing agent for the soil composition. More specifically, the fluorite can supplement calcium and sodium components to a curing agent for a soil composition, thereby improving the reaction rate during curing and reducing the side reaction. In addition, the fluorite can smooth the surface of the soil composition and improve the strength of the soil composition.

As the fluorite, it is preferable to use the blue zone collected in the Cornwall area. Preferably, the fluorite is pulverized and used in the form of a powder. It is preferable that particles having a size of 200 mesh (a size of the eye having a size of 74 mu m and an interval of 1 inch in a plane standard are used) are preferably used.

The fluorite may be contained in an amount of 10 to 25 wt% based on the total 100 wt% of the curing agent for the soil composition of the present invention.

If necessary, the curing agent for the soil composition may further comprise a transparent aqueous waterproofing liquid. When the curing agent for the soil composition further comprises a transparent aqueous waterproofing liquid, the surface waterproofing property of the soil composition containing the waterproofing agent can be further improved. As the transparent aqueous waterproofing solution, those known in the art can be used.

Among the substances contained in the curing agent for a soil composition, in the case of a substance to be added in a solid phase, it is preferable that the material is pulverized and mixed in powder form, and particles having a uniform size of 200 mesh are preferably selected. As the size of the substance to be added in the solid phase is smaller, the substance is dissolved in water. Therefore, in terms of improving water solubility, the substance to be added in a solid phase is preferably small in size. However, when the size is too small, An inadequate problem may arise.

The curing agent for the soil composition of the present invention may be solid. More specifically, it may be powdery or gel-like. It may be in the form of a gel when left at room temperature, and it may be in the form of a powder if it is shaken. When used to cure soil, it can be used after shaking to powder. The curing agent for the soil composition, which may be in the form of a powder or a gel, is excellent in mobility, storage stability and stability, and is water-soluble.

The curing agent for a soil composition of the present invention can cure soil as various natural soil aggregates around a construction site where concrete is required, and thus a soil composition having sufficient strength can be produced. When the soil composition is used as a building material, time and cost for construction can be reduced.

In the present invention, the zeolite is a water-soluble crystalline particle having a cation exchange property, and through this characteristic, it is possible to maximize the hydration property of the soil composition during curing to form an air layer in a compressed vacuum state in accordance with the progress of curing. Through this, the thermal conductivity of the soil composition to be produced can be reduced.

The zeolite may also exchange calcium ions and magnesium ions contained in the soil of the soil composition with sodium ions. The soil composition of the present invention becomes alkaline as the sodium content increases, and this can work together with the natural-friendly vegetable material contained in the curing agent for the soil composition, thereby maximizing the deodorizing and neutralizing action.

The zeolite may be included in the soil composition of the present invention in powder form, which is an aggregate of particles having a particle size of 150-250 mesh, pH 6-12. Preferably in the form of a powder, which is an aggregate of particles having a particle size of 200 to 250 mesh. It is preferable that the zeolite is a natural material and a standardized one that has passed the heavy metal detection test is selected.

In the present invention, the soil may include clay, silty, sand, gravel, and the like, and it is preferable that the cement concrete mainly contains soil which is not used as an aggregate and which is a particulate soil having a particle size of 5 mm or less. The soil may take various soil forms depending on the soil, and may include, for example, but not limited to, margarito, clay, loess, kaolin, clay, and matrix soil. In terms of reducing manufacturing costs and manufacturing time, it is desirable that general local soils obtainable at the construction site be selected.

The soil may comprise fine sand. Generally, the particles of the sand used as aggregate in the production of concrete are 5 to 25 mm, and the fine sand means sand having a particle size of 5 mm or less. The fine sand may be generated from construction waste. When the soil includes fine sand generated from construction waste, it is possible to improve the recycling rate of construction waste, so that an environmentally friendly and low-cost soil composition can be produced. Alternatively, the fine sand may be obtained by filtering the sand in the desert region with a 5 mm sieve. When the soil composition according to one embodiment of the present invention including the fine sand in the desert region is included in the construction of civil engineering structures and buildings in the desert region, problems due to the difficulty of aggregate supply and demand can be alleviated.

If necessary, the soil may include loess, in terms of improving the strength and adiabatic effect of the soil composition of the present invention. Hwangto is an eco-friendly material with humidity control, deodorization, antibacterial effect, and excellent heat storage effect. In addition, when the soil composition of the present invention contains yellow loess, the color can be adjusted to show red light.

If necessary, in terms of controlling the hue of the soil composition of the present invention, the soil may comprise clay. When the soil composition of the present invention contains clay, the hue can be adjusted to show white light.

If necessary, the soil containing the particulate soil as a main component may further include at least one selected from the group consisting of sand, gravel, and crushed stone, in terms of improving the strength of the soil composition of the present invention. The sand, gravel and crushed stone are used as aggregate to make conventional mortar or concrete, and may have a particle size of 5 to 25 mm. At least one selected from the group consisting of sand, gravel and crushed stone may be one containing quartz, mica, amphibolite, pyroxene, magnetite and volcanic glass. When at least one selected from the group consisting of sand, gravel and crushed stone is contained in the soil composition of the present invention, the large soil particles serve to enlarge the surface area to smooth the binding of the small fine particles, It is possible to improve the strength of the soil composition through its own properties, which have a particle size and a center of gravity.

The content of at least one member selected from the group consisting of sand, gravel and crushed stone is not particularly limited and may be appropriately used according to the soil contained in the soil composition. For example, in one embodiment of the present invention including fine sand as a main component, it may be included in an amount of 30 to 80 wt% with respect to 100 wt% of the soil, but is not limited thereto.

The cement may be any known cement. For example, Portland cement may be used, but the present invention is not limited thereto. The Portland cement is prepared by thoroughly mixing raw materials containing lime, silica, alumina and iron oxide as main components in appropriate proportions and adding a gypsum as a curing agent to the sintered clinker, It is widely used as a base material for concrete, mortar, stucco and grout in the world.

The soil composition having improved heat insulation performance of the present invention can be prepared by mixing the curing agent for soil composition, the zeolite, the soil, the cement and water. More specifically, the zeolite, the soil and the cement are mixed to prepare a powdery mixture containing soil and cement, the curing agent for the soil composition is dissolved in a small amount of water to prepare a curing liquid, And the hardening liquid are mixed to maintain a slump, and water is further added to prepare the soil composition of the present invention.

In the soil composition of the present invention, the zeolite may be included in an amount of 5 to 40 wt% based on 100 wt% of the powdery mixture. When the content of zeolite is less than 5 wt%, it may not exhibit an improved adiabatic effect due to the addition of zeolite. When the content of zeolite is more than 40 wt%, the adiabatic performance is improved. However, The manufacturing cost is increased and the waterproof property is lowered. Preferably, the zeolite may be included in an amount of 10 to 30 wt% based on 100 wt% of the powder mixture.

In the soil composition of the present invention, the soil may be contained in an amount of 30 to 80 wt% based on 100 wt% of the powdery mixture. If the content of the soil is less than 30 wt%, the content of the cement in the soil composition to be produced may increase, and the production cost may increase. If the soil content is more than 80 wt%, the content of the cement in the soil composition to be produced may be lowered There may be problems in strengthening (concrete).

In the soil composition of the present invention, the soil may comprise loess. The content of the loess is not particularly limited, but can be adjusted depending on the content of zeolite.

In one embodiment of the present invention, when the zeolite is included in an amount of 5 to 10 wt% based on 100 wt% of the powder mixture, the loess may be contained in an amount of 1 to 3 wt%.

In another embodiment of the present invention, when the zeolite is contained in an amount of 10 to 20 wt% based on 100 wt% of the powder mixture, the loess may be contained in an amount of 3 to 5 wt%.

In another embodiment of the present invention, when the zeolite is included in an amount of 20 to 30 wt% based on 100 wt% of the powder mixture, the loess may be included in an amount of 5 to 8 wt%.

In the soil composition of the present invention, the content of the cement is not particularly limited, but may be 15 to 30 wt% based on 100 wt% of the powder mixture. The content of the cement is preferably as low as possible in terms of production cost and environment, but if it is less than 15 wt%, the compressive strength of the soil composition to be produced may be lowered. The content of the cement is preferably as high as possible in terms of improving the strength of the soil composition to be produced, but when it is more than 30 wt%, the eco-friendliness and the manufacturing cost reduction effect of the present invention in the production of the soil composition can be reduced have.

In the soil composition of the present invention, the curing agent for the soil composition may be added in an amount of 0.01 to 0.1 part by weight based on 100 parts by weight of the powdery mixture. When the curing agent for soil composition is added in an amount of less than 0.01 part by weight, the reaction with the soil particles may be reduced to reduce the compressive strength of the soil composition. If the curing agent is added in an amount exceeding 0.1 part by weight, There may arise a problem of rising.

The water content of the soil composition of the present invention can be controlled depending on the kind, content and zeolite content of the selected soil, and is not particularly limited, but may be 20 to 45 parts by weight based on 100 parts by weight of the powder mixture. As the content of zeolite contained in the soil composition of the present invention increases, the content of the water also preferably increases within the above range.

If desired, the soil composition of the present invention can be prepared by further containing additives. The additive may be at least one selected from the group consisting of a substance conventionally added in the production of cement and concrete in the art, a substance which enhances the binding force between soil particles and a substance which imparts functionality to the soil composition to be produced. For example, the soil composition of the present invention can be prepared by further including an admixture, a pigment, and the like. The mixing ratio of the soil composition which is changed due to the above additives can be adjusted based on the general knowledge of those skilled in the art.

The soil composition of the present invention is suitable for use as a heat insulating material because its heat transfer rate is reduced and its heat insulating performance is excellent. The heat insulating material may include, for example, a dry bit, a mortar, a heat insulating block, a heat insulating board, or a heat insulating floor material, but is not limited thereto.

In addition, the soil composition of the present invention is excellent in fire retardancy and fire resistance, and is safe in a fire accident.

Further, the soil composition of the present invention is excellent in adhesion between soil particles, and thus can have excellent strength. Further, since the fine soil particles are agglomerated, the porosity between the particles is reduced, and it is possible to have excellent crack prevention function and waterproofness. As a result, it can be used as a substitute for conventional cement concrete in the fields of construction and civil engineering.

Further, since the soil composition of the present invention does not contain harmful components to humans but is manufactured including vegetable components, it is environment-friendly, and it is suitable to be used for residential construction materials because it is deodorized.

Hereinafter, the present invention will be described in more detail with reference to the following examples and comparative examples in order to facilitate understanding of the present invention. It will be apparent to those skilled in the art that these embodiments are illustrative of the present invention and are not intended to limit the scope of the appended claims and that various changes and modifications may be made to the embodiments within the scope and spirit of the invention , And it is natural that such variations and modifications fall within the scope of the appended claims.

Example

[Production Examples 1 to 8] Preparation of Curing Agent for Soil Composition

Curing agent for soil composition was prepared with the components and the contents (wt%) as shown in Table 1 below. Magnesium chloride, ferric chloride, ethylene glycol, and a transparent aqueous waterproofing liquid are mixed in a liquid state, and the other components except for magnesium, chromium (III) chloride, ethylene glycol and a transparent waterproofing liquid are mixed in powder form. The powdery mixture was ground and mixed with a jet mixer, and the powdery mixture and the liquid mixture were mixed to prepare a curing agent for the soil composition. For reference, Production Examples 1 to 6 correspond to a curing agent for a soil composition according to the present invention.

Composition of curing agent for soil composition (wt%) Production Example 1 Production Example 2 Production Example 3 Production Example 4 Production Example 5 Production Example 6 Production Example 7 Production Example 8 Sat
For both composition
circa
anger
My
phrase
castle
castle
minute NH ₄ Cl 15.0 15.0 14.0 14.0 17.0 14.0 22.0 22.0 MgCl ₂ 15.0 15.0 14.0 14.0 17.0 14.0 22.0 22.0 CaCl ₂ 11.0 11.0 10.0 8.0 13.0 10.0 20.0 20.0 NaCl 7.0 7.0 7.0 6.0 8.0 7.0 11.0 11.0 MgO 5.5 5.5 5.5 6.0 5.0 5.5 7.0 7.0 Ethylene Glycol 5.5 5.5 5.5 6.0 5.0 5.5 8.0 - FeCl ₃ 3.0 3.0 3.0 2.0 3.0 3.0 5.0 5.0 Wood powder 38.0 - 19.0 22.0 12.0 - - 8.0 Coffee powder - 38.0 - - - 18.0 - - Fluorite powder - - 18.0 19.0 16.0 19.0 - - Transparent waterproofing liquid - - 4.0 3.0 4.0 4.0 5.0 5.0 Sum 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0

[Comparative Example 1]

10 kg of a 5-mm sieve, 60 kg of loess, and 340 kg of cement were mixed and stirred. Then, 1 kg of the curing agent for the soil composition of Production Example 1 was added to 245 L of water, and the resulting mixture was added to the soil and cement mixture. The slurry was kept at 9 cm and blended to prepare a soil composition.

[Comparative Examples 2 to 10]

A soil composition was prepared in the same manner as in Comparative Example 1, except that the ingredients, the contents and the slump conditions were as shown in Table 2 below. For reference, the weight of all the materials used in Table 2 is the basis weight for 1 m ³ of soil composition.

[Comparative Example 11]

A soil composition was prepared in the same manner as in Comparative Example 1 except that no curing agent for the soil composition was added.

[Comparative Example 12]

In place of the curing agent for the soil composition of the present invention, 1.7 kg of an alkali-free system (ROADCON-LF5000: hypoallergenic high-strength liquid quick-setting agent) as a general admixture was used and FLY-ASH (SiO2, Al2, O2 , MULLITE consisting of FeO2, a mixture of QUARTZ and MAGNETITE) was added to the soil composition.

Ingredients and weight of materials used (kg) slump
(cm) Fine aggregate
(5 mm or less)
Royal
(5-25
mm) cement Soil hardening
Composition additive water Type 1 content Type 2 content Kinds content Kinds content Comparative Example 1 Masato 1,080 ocher 60 - 340 Production Example 1 One - - 245 9 Comparative Example 2 Masato 1,080 ocher 60 - 340 Production Example 2 One - - 245 9 Comparative Example 3 Masato 1,080 ocher 60 - 340 Production Example 3 One - - 245 9 Comparative Example 4 Masato 1,080 ocher 60 - 340 Production Example 4 One - - 245 9 Comparative Example 5 Masato 1,080 ocher 60 - 340 Production Example 5 One - - 245 9 Comparative Example 6 Masato 1,080 ocher 60 - 340 Production Example 6 One - - 245 9 Comparative Example 7 clay 890 - - 130 340 Production Example 3 One - - 245 10 Comparative Example 8 china clay 1,080 - - - 300 Production Example 3 One - - 245 9 Comparative Example 9 Masato 1,080 ocher 60 - 340 Production Example 7 One - - 245 9 Comparative Example 10 Masato 1,080 ocher 60 - 340 Production Example 8 One - - 245 9 Comparative Example 11 Masato 1,080 ocher 60 - 340 - - - - 245 9 Comparative Example 12 Masato 1,080 ocher 60 - 340 Alkaline-free system 1.7 FLY-
ASH 0.7 245 9

[Example 1]

720 kg of a 5-mm sieve, 300 kg of cement and 280 kg of zeolite were mixed and stirred to prepare a powdery mixture, and 1 kg of the curing agent for the soil composition of Preparation Example 3 was added to 349 L of water to prepare a powdery mixture . The slurry was kept at 9 cm and blended to prepare a soil composition.

[Examples 2 to 6, Comparative Example 13 and Comparative Example 14]

A soil composition was prepared in the same manner as in Example 1, except that the ingredients, content and slump conditions were as shown in Table 3 below. For reference, the weight of all the materials used in Table 3 below is the basis weight for 1 m ³ of soil composition.

Ingredients and weight of materials used (kg) slump
(cm) Fine aggregate
(5 mm or less) Royal
(5-25
mm) cement Zeolite Soil hardening composition water Type 1 content Type 2 content Example 1 Masato 720 - - - 300 280 One 349 9 Example 2 Masato 600 - - 120 300 280 One 349 9 Example 3 Masato 720 ocher 60 - 300 280 One 351 10 Example 4 Masato 720 ocher 10 - 300 50 One 341 9 Example 5 Masato 720 ocher 20 - 300 180 One 346 9 Example 6 Masato 325 - - 320 325 450 One 358 9 Comparative Example 13 Masato 720 - - - 300 30 One 331 9 Comparative Example 14 - - - - 1,000 360 - - 298 9

[Test Example]

The properties of the soil compositions prepared in the above Examples and Comparative Examples were measured and the results are shown in Tables 4 and 5 below. A standard specimen was used and a specimen of 28 days old was used.

1. Compressive strength measurement

The compressive strengths of Examples 1 to 6 and Comparative Examples 1 to 14 were measured. The compressive strength was measured using KS F 2405: 2010 method, and the measured strengths are shown in Table 4 below.

2. Measurement of bending strength

The flexural strengths of Examples 1 to 6 and Comparative Examples 1 to 14 were measured. The flexural strength was measured using KS F 2408: 2010 method, and the measured strengths are shown in Table 4 below.

3. Measurement of thermal conductivity

Examples 1 to 6, Comparative Example 3 and Comparative Examples 13 to 14 were measured for thermal conductivity. The thermal conductivity was measured at an average temperature of 20 ± 3 ° C using the KS L 9016: 2010 plate heat flow method, and the measured results are shown in Table 5 below.

division Compressive strength (MPa) Flexural strength (MPa) Example 1 24.3 3.9 Example 2 24.7 4.0 Example 3 23.8 3.8 Example 4 22.8 3.7 Example 5 23.6 3.8 Example 6 26.8 4.3 Comparative Example 1 24.5 4.0 Comparative Example 2 24.2 3.9 Comparative Example 3 27.3 4.6 Comparative Example 4 26.7 4.3 Comparative Example 5 25.6 4.1 Comparative Example 6 25.2 4.1 Comparative Example 7 22.8 3.7 Comparative Example 8 25.6 4.1 Comparative Example 9 5.7 0.9 Comparative Example 10 19.8 3.2 Comparative Example 11 22.3 3.6 Comparative Example 12 21.8 3.5 Comparative Example 13 24.3 3.9 Comparative Example 14 21.0 3.4

Referring to Table 4 above, Examples 1 to 6, Comparative Examples 1 to 8 and Comparative Example 13 containing the curing agent for the soil composition of the present invention exhibited a high compressive strength of at least 22.8, a maximum of 27.3 MPa, a minimum of 3.7, a maximum of 4.6 MPa, respectively. The compressive strength generally required for concrete used for construction materials and the like is 20 MPa. In the case of Examples 1 to 6, Comparative Examples 1 to 8, and Comparative Example 13, It can be confirmed that it has excellent strength without any problem.

It can be confirmed that Comparative Examples 9 to 12 containing no curing agent for soil composition of the present invention had lower compressive strength and flexural strength than Examples 1 to 6, Comparative Examples 1 to 8 and Comparative Example 13. [ 9, which does not contain a curing agent and an admixture, has a very low strength. Comparative Example 10 containing an alkali-free admixture instead of the curing agent of the present invention, Comparative Example 11 containing no coffee, wood or ethylene glycol, It can be confirmed that Comparative Example 12 has lower strength than Examples 1 to 6, Comparative Examples 1 to 8, and Comparative Example 13 including the curing agent for the soil composition of the present invention.

In Comparative Example 14, a composition of a commonly used cement concrete was used. A compressive strength of 21.0 MPa and a flexural strength of 3.4 MPa.

division Thermal conductivity (W / mK) Example 1 0.145 Example 2 0.158 Example 3 0.182 Example 4 0.339 Example 5 0.220 Example 6 0.098 Comparative Example 3 0.478 Comparative Example 13 0.419 Comparative Example 14 0.999

Referring to Table 5, it can be seen that Examples 1 to 6, which are soil compositions of the present invention comprising a curing agent and zeolite for soil composition, exhibit a thermal conductivity ranging from 0.098 W / mK up to 0.339 W / mK.

The thermal conductivity of Comparative Example 3 including only the curing agent for soil composition was 0.478 W / mK, which is lower than that of Comparative Example 14 which is a general cement concrete containing neither a curing agent for a soil composition nor a zeolite. Still exhibited a higher thermal conductivity than the improved soil composition.

In Comparative Example 13, the zeolite content was less than 5 wt% of the powder mixture containing soil, cement and zeolite, thereby reducing the adiabatic effect, and still exhibited a higher thermal conductivity than the soil composition with improved adiabatic performance of the present invention.

Examples 1 to 6, which are the soil compositions with improved heat insulation performance of the present invention, can replace the coarse sand or gravel which is difficult to supply and receive, and can use the local soil of all the components collected in the vicinity of the construction site as an aggregate, It can be used instead of conventional concrete. Also, since it has excellent heat insulating performance, it is suitable for residential use for construction and repair of a building structure for reducing heating cost.

Claims (13)

A mixture of a chloride and an inorganic oxide, a curing agent for a soil composition comprising at least one selected from the group consisting of coffee and wood, and ethylene glycol;
Zeolite;
soil;
cement; And
Lt; RTI ID = 0.0 > water. ≪ / RTI >
The soil composition of claim 1, wherein the mixture of chloride and inorganic oxide comprises ammonium chloride, magnesium chloride, calcium chloride, sodium chloride, magnesium magnesium, and ferric chloride.
The soil composition of claim 1, wherein the curing agent for the soil composition further comprises fluorite.
The curing agent according to claim 2, wherein the curing agent for the soil composition comprises 7 to 23 wt% of ammonium chloride, 7 to 23 wt% of magnesium chloride, 4 to 20 wt% of calcium chloride, 3 to 12 wt% of sodium chloride, 3 to 7 wt% of magnesium chloride, 1 to 5 wt%, at least one selected from the group consisting of coffee and wood, and from 3 to 8 wt% of ethylene glycol.
The soil composition according to claim 4, wherein the curing agent for soil composition further comprises 10 to 25 wt% of fluorite for 100 wt% of the curing agent.
The soil composition according to claim 1, wherein the curing agent for the soil composition is in a solid form.
The soil composition of claim 1, wherein the curing agent for the soil composition further comprises a clear waterproofing liquid.
The soil composition of claim 1, wherein the zeolite has a particle size of 150 to 250 mesh.
The soil composition of claim 1, wherein the soil comprises loess.
2. The soil composition of claim 1, wherein the zeolite, soil and cement are comprised of a powder mixture.
11. The soil composition of claim 10, wherein the powder mixture comprises 5 to 40 wt% of zeolite, 30 to 80 wt% of soil, and 15 to 30 wt% of cement.
The soil composition according to claim 10, wherein 0.01 to 0.1 part by weight of a curing agent for a soil composition is contained in 100 parts by weight of the powdery mixture.
The soil composition according to claim 10, wherein water is contained in an amount of 20 to 45 parts by weight based on 100 parts by weight of the powdery mixture.