KR101161420B1 - Composition of yellow soil and pavement method using the same - Google Patents

Abstract

PURPOSE: A loess composition and a construction method for pavement using the same are provided to enhance workability, durability, and crack resistance by including the optimal ratio of loess powder, calcium hydroxide, blast furnace slag, crushed gravel/crushed sand, water reducing agent, and environmentally-friendly binder resin. CONSTITUTION: A loess composition comprises 5-30 weight% of baked loess or raw loess powder, 3-10 weight% of slaked lime, 5-20 weight% of blast furnace slag having a fineness of 6000-8000cm^2/g, 30-65 weight% of crushed gravel and crushed sand, 0.2-1.0 weight% of a natural water reducing agent, 0.1-10 weight% of an environmentally-friendly binder resin, and the remaining amount of water. The natural water reducing agent is selected from a group including naphthalene based, lignin based, and polycarboxylic acid based. The environmentally-friendly binder resin is selected from a group including urethane acrylate resin, polymethyl methacrylate, and hydroxymethyl methacrylate.

Description

Composition of yellow soil and pavement method using the same

The present invention relates to an eco-friendly ocher composition and a packaging method using the same, and relates to an eco-friendly and excellent strength ocher composition and a packaging method using the same.

In general, asphalt or cement concrete is paved for the construction of sidewalks, parks, walkways and roads in apartments. Asphalt or cement concrete has the advantages of relatively high strength and ease of construction, but it does not absorb the heat from the sun and transfers it to the atmosphere as it is, thereby raising the atmospheric temperature, and when the road is damaged, debris becomes a source of soil pollution. In the case of the promenade, there is a problem that the affinity with the surrounding natural environment is not generated, resulting in a heterogeneous feeling, not only damaging the entire natural landscape, but also costing a lot of construction.

In addition, in most conventional ocher compositions and pavement using the ocher composition by partially using processed ocher or raw ocher, mixing and mixing cement or adding ocher components as pigments to give ocher color to existing concrete or mortar products. To obtain the ocher paving, which causes problems due to the use of cement as in the existing concrete product family, there is a problem in terms of environment.

In addition, in order to solve this problem, some ocher compositions and ocher pavement use no cement at all and use a hardener component specially developed by calcining oyster shells. There are problems in solving problems such as sea resistance, sulfuric acid resistance and resistance to cracking.

Conventionally, in view of the above problems of the ocher composition and pavement method, block products containing ocher or clay instead of concrete blocks, and pavement roads based on clay, ocher, natural soil or masato instead of asphalt or cement concrete The following techniques have been proposed for the construction.

However, when cement is added to form ocher-containing block products or packaging materials, pollutant emissions are generated, and eco-friendly features are faded. In addition, construction properties and packaging materials without cement are deteriorated and durability is secured. It was difficult and had low cracking resistance, which caused a lot of cracks. Accordingly, the present invention is to solve the above problems.

The problem to be solved by the present invention is to provide an environmental friendly and excellent strength ocher composition.

Another object of the present invention is to provide a block product comprising the ocher composition.

Another object of the present invention is to provide an ocher composition and a packaging method using the same.

The problems to be solved by the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be clearly understood by those skilled in the art from the following description.

The ocher composition according to an embodiment of the present invention for achieving the problem to be solved, 5 to 30% by weight of ocher powder, 3 to 10% by weight of lime, 5 to 20% by weight of blast furnace slag, and With crushed sand and crushed sand of ~ 65% by weight. It may include 0.2 to 1.0% by weight of a natural water reducing agent, 0.1 to 10% by weight of an environmentally friendly binder resin, and the remaining amount of water.

The block product according to an embodiment of the present invention for achieving another object to be solved may include the ocher composition.

Pavement method, such as pedestrian walkway, walkway, bicycle road, village road pavement according to an embodiment of the present invention for achieving another object to solve the above, 5 to 30% by weight ocher powder, 3 to 10% by weight of lime 5 to 20% by weight of blast furnace slag, 30 to 65% by weight of crushed sand and crushed sand, 0.2 to 1.0% by weight of natural water reducing agent, 0.1 to 10% by weight of eco-friendly binder resin, the remaining amount of water by mixing Forming and securing the road width according to the design specifications of the ocher pavement, construct the boundary stone on both sides of the road, dry and compact the road surface, and then form a base surface of 10-20 cm thick on the top of the road And a step of forming the pavement by laying the ocher composition at a thickness of 7 to 20 cm on the base surface, and forming a gradient on the surface of the pavement for passage and drainage of the pavement. Finishing the surface of the road And curing the upper surface of the pavement with a water vapor barrier to prevent cracks from occurring in the upper part of the pavement and to enhance durability of the pavement.

Specific details of other embodiments are included in the detailed description.

According to the present invention, there is provided an environmentally friendly and excellent strength ocher composition, a block product comprising the same and a packaging method using the ocher composition.

1 is a flow chart showing a packaging method according to an embodiment of the present invention.
2 is a cross-sectional view of the pavement formed by the paving method according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will become apparent with reference to the embodiments described below. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, an ocher composition according to embodiments of the present invention, a block product including the same, and a packaging method using the ocher composition will be described.

The ocher composition according to one embodiment of the present invention may include ocher powder, slaked lime, blast furnace slag, crushed gravel and crushed sand, a natural water reducing agent, an environmentally friendly binder resin, and water.

The loess used in the present invention is a single substance but the range of its effect is very wide. The disease also showed its excellent weakness.

It has been used by our ancestors to make houses, earthenware, etc. since ancient times, and the loess gives heat to the cold energy of the night and cools the hot energy of the day. This is called discussion energy. In recent years, such ocher is becoming more and more convenient everyday products in combination with human psychology whose efficacy is scientifically analyzed, proven and pursues healthy life.

The ocher powder used in the present invention is used by sintering the loess soil in a kiln for about 20 minutes at a temperature of 500 to 800 ° C. and then grinding it into a mill and filtering it using an automatic screen sieve. The ocher, which has undergone such plastic processing, can be more curable. On the other hand, if the firing temperature is less than 500 ℃, it is possible to obtain a loess powder having a low curing degree, and if the firing temperature exceeds 800 ℃, since sufficient curing degree is obtained, energy required to secure the degree of curing may be consumed. .

On the other hand, the ocher powder may be used in the unburned raw ocher. However, in terms of the degree of hardening of the ocher powder, it would be more preferable to use processed loess which has been subjected to the above-mentioned firing process, and unprocessed raw ocher is used in terms of expected effects such as far-infrared emission and mineral components inherent in loess. It would be more desirable to.

The content of ocher powder may be 5-30% by weight in the total ocher composition. When the content of the ocher powder is less than 5% by weight, the above-described eco-friendly effects obtained by the inclusion of the ocher powder may be insignificant. On the other hand, if the content of the ocher powder exceeds 30% by weight, the above-mentioned eco-friendly effect can already be sufficiently obtained, so that the expected effect due to the increase in content may not increase any more, and to satisfy the expected effects such as strength There is no economic feasibility. In addition, the amount to which other compositions are added may be reduced, so that the strength of the ocher composition to be formed later may be lowered.

Slaked lime may be included to neutralize the acidity of the ocher composition. The slaked lime may include mainly calcium oxide (CaO), and may serve to supply alkali to the ocher composition.

The content of slaked lime may be 3 to 10% by weight. If the content of slaked lime is less than 3% by weight, the effect of supplying alkali to the ocher composition is insignificant, and if it is more than 10% by weight, the ocher composition may show alkylation as a whole.

Blast furnace slag may be included to solidify the ocher composition through neutralization and hydration by chemical ion substitution of metal ions when mixed with water.

At this time, blast furnace slag having a powder degree of 6000 to 8000 cm 2 / g may be used. If the blast furnace slag powder is less than 6000 cm 2 / g, the compressive strength of the block product or packaging material to be formed into the ocher composition may be weakened, so that the block product or packaging material may be cracked or cracked relatively easily. On the other hand, if the powder degree exceeds 8000 cm 2 / g, since the compressive strength of the block product or packaging material is no longer increased, there is an undesirable aspect in terms of economics of the process.

On the other hand, the content of the blast furnace slag may be 5 to 20% by weight. If the content of blast furnace slag is less than 5% by weight, the effect of solidifying the ocher composition may not be sufficiently exhibited. As a result, a block product or a packaging material having a small compressive strength may be formed. If the content of the blast furnace slag is more than 20% by weight, the solidification is too excessive, the overall physical properties of the ocher composition may be weakened.

When the packaging material is formed of an ocher composition, aggregate may be included to form a framework of the packaging material.

The type of aggregate used in the present invention is not particularly limited. However, for gravel gravel and gravel suitable for the quality of crushed coarse aggregate for concrete with a maximum particle diameter of 13 mm or less, sand suitable for the quality of crushed sand for concrete with a maximum particle diameter of 5 mm or less is appropriate. The quantity can be adjusted in consideration of fine aggregate ratio (s / a) in consideration of required strength and surface finish.

In addition, in order to improve the performance of the ocher composition by replacing some of the aggregates with environmentally friendly aggregates such as silica sand, elvan, jade may be used to increase the environmental friendliness.

The content of crushed gravel and crushed sand may be 30 to 65% by weight. In this case, when the content of the crushed gravel and the crushed sand is less than 30% by weight, the skeleton of the block product or the packaging material may not be properly formed, and the input amount of other materials may be increased, thereby lowering economic efficiency. When the content of crushed gravel and crushed sand exceeds 65% by weight, the strength of the composition may be lowered or difficulty such as surface finishing may occur.

For this reason, the content of crushed gravel and crushed sand can be produced by improving the strength and constructability by adjusting the appropriate content within the range of about 30 to 65% by weight based on the requirements of the entire ocher composition.

Natural water reducing agents may be included to help solidify the ocher composition.

The natural water reducing agent may be at least one selected from the group consisting of, for example, naphthalan-based, liglin-based and polycarboxylic acid-based.

The content of natural water reducing agent to the whole of the ocher composition may be 0.2 to 1.0% by weight. If the content of the natural water-reducing agent is less than 0.2% by weight, the water-reducing effect is lowered. If the content of the water-reducing agent is more than 1.0% by weight, the water-reducing effect is excessively increased, which may cause problems in construction.

On the other hand, the packaging composition according to the present invention may include water and eco-friendly resin, water and eco-friendly resin (W) and water-binding material ratio of the binder (B) such as ocher, slaked lime, blast furnace slag (W / It is preferable that B) is 35 to 45%. When the binder ratio was 35%, the strength was increased, but it was difficult to form the ocher composition. On the other hand, when the binder ratio exceeds 45%, it was relatively excellent to form the ocher composition, but the strength of the formed ocher composition was lowered. Therefore, it is preferable to select the binder ratio in the above range.

Eco-friendly binder resin may be used to enhance the durability of the ocher composition. In addition, the environmentally friendly binder resin may improve the bonding strength between the other compositions included in the ocher composition, salt resistance, copper resistance, sulfuric acid resistance, and the like. For example, resistance to damage caused by calcium chloride sprayed for winter snow removal, resistance to freezing and thawing, and resistance to chemical erosion caused by river water pollution are increased, and the incidence of cracks can be reduced by improving the binding force between sand particles.

The eco-friendly binder resin may be at least one selected from the group consisting of, for example, urethane acrylate resin, polymethyl methacrylate, and hydroxyethyl methacrylate.

Here, the urethane acrylate resin is a hybrid resin having both the urethane properties and the acrylate properties. Such urethane acrylate resins can generally be prepared by polymerization of urethane prepolymers with hydroxy alkyl acrylates. The urethane prepolymer is formed by a polymerization reaction of a polyol and an isocyanate, and the types thereof are various. In addition, examples of the hydroxy alkyl acrylate include methyl methacrylate, nbutyl acrylate, and the like.

The content of the eco-friendly binder resin may be 0.1 to 10% by weight in the whole ocher composition. When the content of the environmentally friendly binder resin is less than 0.1% by weight, the effect for strengthening the binding force between the other compositions in the ocher composition is insignificant. When the content of the eco-friendly binder resin exceeds 10% by weight, the bonding strength between the other compositions in the ocher composition is strengthened, but the workability is lowered, so that an additional process may be required in the preparation of the ocher composition, so that the overall economical efficiency of the process May not be desirable.

On the other hand, the ocher composition according to the present invention may include water, the mixing ratio (water: binder resin) of water and environmentally friendly binder resin may be 2: 1 to 5: 1. In consideration of the overall bonding strength and processability between the compositions contained in the ocher composition, it is preferable to mix water and an eco-friendly resin in advance within the above range and then mix with other compositions.

The ocher composition may include water. Water may be blended in different compositions and may contain residual amounts. Water functions to allow compositions other than water to be mixed.

On the other hand, the reinforcement may be further included to reinforce the strength and crack resistance of the packaging material to be formed by the ocher composition.

As the reinforcing material, it is preferable to use a reinforcing material formed of geotextiles and environmentally friendly resins, for example, cellulose. However, a reinforcing material commonly used in the market may be arbitrarily selected and used within the range of not impairing the present invention. . In this case, the reinforcement may not only improve the firmness of the bonding force, but also reduce the crack of the block product or the packaging material, and may impart an elastic force to the block product or the packaging material.

The content of the reinforcement may be 0.2 to 1% by weight. If the content of the reinforcing material is less than 0.2% by weight, the effect of the reinforcing material may be insignificant. When the content of the reinforcing material exceeds 1% by weight, it may be excessively added in relation to other compositions to lower the physical properties of the entire packaging composition.

Meanwhile, a block product and a packaging material including the above-described ocher composition may be formed. The formation of the ocher composition may be formed by conventional ocher composition forming processes. On the other hand, the ocher composition can be used in various block products, such as lake block, reinforcement earth block, artificial reef, grass block. In addition, it can be used for pavement of ocher sidewalk blocks, block paving products, trails, bicycle roads, village road pavement. In addition, it can also be used as a flooring of the crystal paper forming the bottom of the salt field, which is environmentally friendly.

Next, a packaging method according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 is a flowchart showing a paving method according to an embodiment of the present invention, Figure 2 is a cross-sectional view of a pavement formed by a paving method according to an embodiment of the present invention. On the other hand, the ocher composition used in the packaging method of the present embodiment is substantially the same as the ocher composition described above.

In pavement methods such as pedestrian walks, trails, bicycle roads, village road pavement, first, 5-30% by weight ocher powder, 3-10% by weight slaked lime, 5-20% by weight blast furnace slag, 30-65% by weight Crushed gravel and crushed sand, 0.2 to 1.0% by weight of a natural water reducing agent, 0.1 to 10% by weight of an environmentally friendly binder resin, the remaining amount of water is mixed to form an ocher composition. Here, since the ocher composition is substantially the same as the above-described ocher composition, repeated description is omitted.

Subsequently, according to the design specifications of the ocher pavement, the road width is secured, boundary stones are installed on both sides of the road, the road surface is dried and compacted, and a base surface of 10-20 cm thick is formed on the upper part of the road. . The thickness of the base layer surface should be 10 to 20 cm to secure the bearing capacity of the pavement to be formed on the base layer surface.

Subsequently, the ocher composition is laid on the base layer surface to a thickness of 7 to 20 cm to form a pavement. Thereby, the road of FIG. 2 in which the pavement is formed on the base surface is formed.

Subsequently, a gradient is formed on the surface of the pavement for passage and drainage of the pavement to finish the surface of the pavement.

Subsequently, the upper surface of the pavement is cured with a water vapor barrier to prevent cracks from occurring in the upper part of the pavement and to enhance durability of the pavement. The pavement is formed by the method described above.

Hereinafter, the present invention will be described in detail with reference to examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example

Example W / B water Binder resin Processing
ocher Admixture Slaked lime Slag Crushed Sand Crushed Gravel system One 45.7 6.4 3.2 6.5 0.5 6.5 7.9 31.7 37.3 100 2 40 6.3 3.3 6.5 0.5 6.5 10.7 31.7 34.5 100 3 34.1 6.2 3.1 6.5 0.6 6.5 14.4 30.2 32.5 100 4 28.5 6.1 3.1 6.1 0.6 6.5 19.6 28 30 100 5 41.2 11 0 6.5 0.5 6.4 14.1 29.6 31.9 100

* Unit: weight%

In the content of Table 1, a test specimen for strength was prepared using the ocher composition according to the present invention.

Test Example  One

The compressive and flexural strengths were tested in the following manner.

In other words, using the ocher composition shown in Table 1 was prepared by the method for preparing a test specimen for strength test KS F 2403-'10 and measured by the compressive strength test method KS F2405-'10 and the flexural strength test method KS F2408-'10. The results are shown in Table 2 below.

example Compressive strength Flexural strength Remarks 7 days 14 days 28 days One 22.84 24.94 25.79 4.5 or more 2 24.77 26.32 32.34 3 24.82 31.83 39.45 4 32.71 38.63 46.01 5 25.31 27.2 29.91

*unit: Mpa

As can be seen from the above results, the compressive strength and the flexural strength of the composition comprising the ocher composition according to the present invention was found that the performance is superior to the composition of the block family and ocher pavement made of the conventional ocher composition. . In addition, it can be seen that the compressive strength and the flexural strength of the block products satisfy the specification values.

Test Example  2: Hazardous Substance Release Test Results

Using the ocher composition prepared in Example 2 conducted a hazardous substance release test of the composition material is shown in Table 3 below.

Test Items result Environmental standard value (one area standard) Adequacy Testing institution Harmful heavy metals Cadmium (Cd) Not detected 12 proper Korea Testing & Research Institute
(Soil Pollution Process Test Criteria) Hexavalent chromium (Cr) Not detected 15 proper Copper (Cu) 13.8mg / kg 450 proper Mercury (Hg) 3.03 mg / kg  12 proper Lead (Pb) 14.5mg / kg  600 proper Zinc (Zn) 52.0mg / kg 900 proper Nickel (Ni) 1.39mg / kg  300 proper Hazardous Chemicals Organic phosphorus Not detected - proper phenol Not detected 10 proper benzene Not detected 3 proper toluene Not detected 60 proper Ethylbenzene Not detected 150 proper Xylene Not detected 45 proper Trichlorethylene Not detected 24 proper Tetrachloroethylene Not detected 12 proper Benzopyrene Not detected 2 proper

As can be seen from the above results, according to the present invention, it is possible to manufacture the ocher composition and composition that are not detected harmful substances or meet environmental standards.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and may be manufactured in various forms, and a person of ordinary skill in the art to which the present invention belongs may have the technical idea of the present invention. However, it will be understood that other specific forms may be practiced without changing the essential features. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (12)

5-30% by weight of calcined ocher or unbaked raw ocher powder;
3-10% by weight of hydrated lime;
5 to 20% by weight of powder degree 6000 to 8000 cm 2 / g blast furnace slag;
30 to 65% by weight of crushed sand and crushed sand;
Natural sensitizer selected from the group consisting of 0.2-1.0% by weight of naphthalane-based, ligline-based and polycarboxylic acid-based;
Eco-friendly binder resin selected from the group consisting of 0.1 to 10% by weight of urethane acrylate resin, polymethyl methacrylate and hydroxyethyl methacrylate; And
An ocher composition comprising a residual amount of water. The method according to claim 1,
The calcined ocher is calcined ocher composition at a temperature of 500 to 800 ℃. The method according to claim 1,
The ocher composition further comprises 0.2 to 1% by weight of reinforcement. The method of claim 3,
The reinforcing material is ocher composition is a reinforcing material formed of geotextiles or environmentally friendly resin. delete delete The method according to claim 1,
The ocher composition of the binder (B) of the loess, slaked lime, blast furnace slag and the mixed water (W) of the water and the resin (W / B) is 35 to 45%. delete The method according to claim 1,
The mixing ratio of the water and the environmentally friendly binder resin (water: eco-friendly binder resin) is 2: 1 to 5: 1 ocher composition based on the volume of the water and the binder resin. Block product comprising the ocher composition of any one of claims 1 to 4, 7 and 9. In pavement methods such as footpath, promenade, bicycle road, village road pavement,
The packaging method,
5 to 30% by weight ocher powder, 3 to 10% by weight lime, 5 to 20% by weight blast furnace slag, 30 to 65% by weight crushed sand and crushed sand, 0.2 to 1.0% by weight natural water reducing agent, 0.1 to 10 Forming the ocher composition of claim 1 by mixing the weight percent of the environmentally friendly binder resin, the remaining amount of water;
Securing the road width according to the design specifications of the ocher pavement, constructing boundary stones on both sides of the road, drying and compacting the road surface, and then forming a base surface having a thickness of 10 to 20 cm on the top of the road;
Forming a pavement by laying the ocher composition at a thickness of 7 to 20 cm on the base layer;
Finishing a surface of the pavement by forming a gradient on the surface of the pavement for passage and drainage of the pavement;
Pavement method comprising the step of curing the upper surface of the pavement with a moisture evaporation barrier to prevent the occurrence of cracks in the upper part of the pavement, and to improve the durability of the pavement. The method of claim 11, wherein
The compressive strength of the pavement is 18 to 24 MPA pavement method.

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