KR20010085058A - Building method of mechanization farming road having environmental affinity - Google Patents

Abstract

PURPOSE: An environment-friendly mechanized farm road constructing method is provided to minimize the amount of used concrete for preventing soil and crop pollution by mixing soil with a soil hardener, net type polypropylene and aggregates such as gravel, as a base layer of a farm road. CONSTITUTION: To create a mechanized farm road, a road base is developed. Then, soil is mixed with 5 to 6wt% of a soil hardener to be a base layer. The mixed soil is paved and hardened on a road. Soil is mixed with 12 to 15wt% of the soil hardener, 10 to 20wt% of gravel and 0.1 to 0.3wt% of polypropylene to be a surface layer. The mixed soil is paved and hardened on the road. The soil hardener consists of: 45 to 60wt% of furnace slag, 10 to 30wt% of plaster, 1 to 5wt% of aluminates and the remains of Portland cement. The polypropylene is 15 to 20mm in length in a net type.

Description

BUILDING METHOD OF MECHANIZATION FARMING ROAD HAVING ENVIRONMENTAL AFFINITY

The present invention relates to a method for creating an environmentally friendly mechanized tillage, and more specifically, to utilize temporary soil generated at the time of opening a road in the construction of a temporary road at a construction site, particularly in a farm road where agricultural machinery enters and exits farmland, The present invention relates to an environment-friendly mechanized tillage path that minimizes soil pollution and mixes soil hardener, gravel, and fiber generated from thermal power generation and uses them as base material and surface layer material for temporary roads.

As part of the road for heavy roads, construction sites, etc., as well as the expansion of agricultural infrastructure, agricultural roads in agricultural lands where combine machinery or tractors are operating are being actively promoted. Until now, temporary roads such as farm roads and construction sites were dependent on concrete pavement, and unpaved temporary roads were used by using soil hardening agents to harden some soil, or temporary roads were used by using asphalt.

The above concrete pavement promotes the basicization of the surrounding soil by CaO contained in a large amount of concrete, which not only hinders the growth of crops, but in the case of temporary roads, it is necessary to bury concrete wastes generated from temporary roads after the completion of construction. As it does, it adversely affects the environment.

In particular, in the pavement such as concrete or asphalt, waste generated at the road opening site should be buried in a landfill site, resulting in environmental problems and costs associated with landfilling.

An object of the present invention is to minimize the amount of concrete used for pavement to solve the problems such as soil pollution, and environmental pollution caused by waste treatment in the conventional road pavement, by utilizing the soil inevitably generated at the construction site It is to provide an environment-friendly mechanized tillage construction method that can minimize pollution.

In addition, another object of the present invention is to form a base layer of tillage by using a mixture of soil hardener and aggregates such as mesh-type flopropylene and gravel, which is a soil hardener and soil fibers in the opening of the farmland of the arable land with the most of the soft ground Therefore, the present invention provides an environment-friendly mechanized tillage method for minimizing the amount of concrete that adversely affects soil pollution and crop growth by opening a tillage path.

1 is a cross-sectional view showing the structure of a road paved in accordance with the present invention.

The present invention has been made in order to achieve the above objects, the environment-friendly mechanized tillage method according to the present invention is a base composition step for the opening of the road; A base material mixing step of mixing the earth and sand and the soil hardening agent of 5 to 6 Wt% of the earth and sand to install the base on the road surface when the base is formed; A base formation step of laying and compacting a base material mixed with soil and soil hardener; A surface material mixing step of mixing the soil, 12 to 15 Wt% soil hardener, 10 to 20 Wt% gravel, and 0.1 to 0.3 Wt% fibers of the soil to form a surface layer on the base layer; And laying and compacting the surface material mixed with the soil, soil hardener, gravel, and fiber.

The soil hardener is composed of 45 to 60 Wt% of furnace slag, 10 to 30 Wt% of gypsum, 1 to 5 Wt% of aluminate, and the rest of the potent cement, the fiber is polypropylene, and the fiber is 15 to 20 mm in length. And mesh type.

The curing agent used in the present invention is formed by mixing the soil No. 0,283,120 (trade name: ESC New Beton) developed by the applicant of the present invention and registered soil and the soil collected at the road opening site, such as a cultivation furnace, to form a base layer, Soil hardener, soil, gravel, and pavement by mixing a fiber, such as polypropylene for cracking the pavement to form a tilling method.

In particular, the method for forming an environmentally friendly mechanized cultivation furnace according to the present invention is called 'ecoconcrete paving method', which is a combination of soil particles made of inorganic material and uses a new concept paving method using a nature-friendly material. I speak.

On the other hand, Figure 1 is a cross-sectional view showing a road paved by an environmentally friendly mechanized tillage method according to the invention.

Hereinafter, by describing the embodiment of the present invention will be more clearly described for the method and packaging agent to be solved by the present invention.

<First Embodiment>

After the basic construction (road compaction), etc. of the road construction site by the usual method is carried out in each of the following steps.

First, the earth and sand (clay, masato, 산, santo) and soil hardeners collected during the foundation construction are mixed by using equipment (mixing equipment such as a mixing plant) to form a base material (first step), and thus the mixed substrate Lay the material on the road surface where the basic construction such as road compaction is completed, arrange the road surface with a grader, and then compact the road surface with rollers etc. (Step 2), where the mixing amount of the soil hardener is 5 Wt% of the unit weight of the soil. .

The mixed soil is used after crushing with stabilizer and color it with 23mm ~ 30mm. The composition is shown in Table 1, and it is well known that it may vary according to construction area. Soil hardener is the inventor of the present application. Soil hardener (trade name: ESC New Beton) filed was used. The soil hardener is composed of blast furnace slag 45-60Wt%, gypsum 10-30Wt%, aluminate 1-5Wt%, and the rest of the potent cement.

In addition, it was installed using graders, etc., and the compaction was compacted using tandem rollers, etc., and it can be sprinkled by watering according to the water content of the mixed base material. If the base packing is less than 30cm, it is desirable to install at a time. The time required is 3 to 4 hours. The installation thickness at this time can be changed according to the ground conditions of the site, and the amount of soil hardener can be selected in the range of 5 ~ 6Wt%. In addition, it is possible to use a base material added with gravel depending on the construction site conditions.

Substrate plays a role of distributing load evenly on the ground by receiving surface load. Soil hardener used as base material increases adhesion and durability between soils through hydration reaction.

Next, in order to form the surface layer on the base layer, the soil, gravel, fiber, and soil hardeners collected at the site are mixed and the surface layer agent is mixed (step 3), laid on the base layer, and the equipment such as roller or compactor is used. (4 steps) to complete the packaging.

At this time, the surface material is the soil collected from the construction site (except soils brought in from outside), soil hardening agent, gravel and fiber, and the mixing ratio is 10-20Wt% of the soil sand, and the soil hardening agent (ESC New Beton mentioned above). Is 12-15 Wt% of the soil sand, and the fiber is 0.1-0.3 Wt% of the soil sand. The gravel used for the surface material is natural aggregate in the surface dry saturation state. In this embodiment, the Geum river basin aggregate is used, but if the gravel is about 4-10 mm in size, those skilled in the art can select it according to the field conditions and the fiber used is polypropylene fiber. Although a mesh of about 15 to 20 mm in length is suitable, a synthetic fiber having strong corrosion resistance can be selected and used by those skilled in the art. In this embodiment, 15 to 20 mm is used in consideration of the difficulty of mixing. It can be appropriately selected according to the specification.

The nature of earth and sand Specific gravity (20 ℃) Atterberg limits Distributing earth and sand in grain size (passing.%) LL,% PL,% PI No.4 No.10 No.40 No.200 0.005mm 2.66 36.8 - 12.9 97.6 91.7 82.1 45.9 10.0

Second Embodiment

In the first embodiment, a road laying method such as a cultivation furnace for constructing a surface layer on a substrate after construction of a base layer is disclosed, but a cultivation furnace may be constructed by constructing only the surface layer using the surface layer material without the substrate according to the conditions of the ground.

Third Embodiment

In this embodiment, when forming a base layer, a method of constructing a base layer by mixing and using gravel at 10 to 20 Wt% is disclosed.

The natural aggregate of the surface dry saturation state collected in the Geum river basin of the gravel, as shown in Table 2, the pebble itself has a certain stiffness, so that the mixture further increases the strength of the base Let's go.

The nature of earth and sand Classification Size (mm) Specific gravity (20 ℃) Absorption rate (%) F.M Unit weight (kgf / m ³ ) Pebble 4.76-10 2.64 2.62 7.28 1,502

On the other hand, in the present embodiment, as in the first embodiment, the basic construction (road compaction), etc. of the road construction site is first performed by the usual method, and then performed in each of the following steps.

First, by using the equipment (mixing equipment, such as mixing plant) and soil (clay, masato, 뻘, santo) collected during the foundation work by using the equipment (mixing equipment, such as mixing plant) to form a base material (step 1), The mixed base material is laid on the road surface where the basic construction such as road compaction is completed, and the road surface is cleaned with a grader and then compacted with a roller or the like (second step). At this time, the mixing amount of the soil hardener is 5 to 6 Wt% of the soil, and the mixing amount of the gravel is 10 to 20 Wt% of the soil.

The mixed soil is crushed with a stabilizer and used after crushing with 23 ~ 30mm. The composition is shown in Table 1, and it is well known that it may be different for each construction area. Silver is used for tandem roller, and it can be sprayed according to the water content of the mixed base material. If the base packing is less than 30cm, it is preferable to install it at one time, and the total time required for construction is suitable for 3 ~ 4 hours. . At this time, the laying thickness can be changed according to the ground conditions of the site.

Next, in order to form a surface layer on the base layer, the soil, gravel, fiber, and soil hardeners collected at the site are mixed and the surface layer agent is mixed (3 steps), laid on the base layer, and the equipment such as a roller or a compactor is used. (4 steps) to complete the packaging.

At this time, the surface material is the soil collected from the construction site (it can be brought in from the outside), soil hardener, gravel and fiber, and the mixing ratio is 10-20 Wt% of the soil sand, and the soil hardener (ESC New Beton) is 12-15 Wt% of the soil, and the fiber is 0.1-0.3 Wt% of the soil. The gravel used for the surface material is a natural aggregate of the surface dry saturated state, in this embodiment was used Geum river basin aggregate, if the size is about 4 ~ 10mm gravel can be selected by those skilled in the art according to the field conditions, the fiber used As a polypropylene fiber, a mesh type having a length of about 15 to 20 mm is suitable, but a synthetic fiber having strong corrosion resistance can be selected and used by those skilled in the art. In view of the difficulty of mixing, in this embodiment, 15 to 20 mm is used. Also, to prevent cracking, it can be appropriately selected according to specification conditions.

<Test method and result>

Characteristics of road paving materials such as compaction, strength, bearing capacity, etc. of soil hardeners and soils used as base material in the present invention, and surface paving materials mixed with soil, soil hardener, gravel and fiber Looking at it was tested by the following test method.

First of all, for the test of the base layer, considering the characteristics of each material, it was mixed according to the constituent ratios to make a sufficient compaction. The condition was cured at, and the test was carried out according to the method specified in KS and BS, and the average value of three repeated tests was used as the experimental result.

Hereinafter, the test includes a compaction test to determine the optimum water content and compaction state during the construction of the substrate, a permeability test to measure the coefficient of permeability in the variable head permeability test method to determine the degree of water penetration into the substrate during use, and CBR test, ultrasonic vibration speed, compressive strength test and flexural strength test were conducted to determine compaction strength.

Soil hardener mixed with earth and sand Formulation Name Tosa Pebble Soil hardener water E ₁ 100 0 0 18.70 E ₂ 95 0 5 19.00 E ₃ 90 0 10 19.30 E ₄ 85 0 15 19.50 E ₅ 80 0 20 19.60 E ₆ 90 10 0 16.83 E ₇ 85 10 5 17.10 E ₈ 80 10 10 17.37 E ₉ 75 10 15 17.55 E ₁₀ 70 10 20 17.64 E ₁₁ 80 20 0 14.96 E ₁₂ 75 20 5 15.20 E ₁₃ 70 20 10 15.44 E ₁₄ 65 20 15 15.60 E ₁₅ 60 20 20 15.68

In addition, the characteristics and tests according to the incorporation of the soil hardener of the present invention will be described as follows.

The test of mixed soil of soil hardener was accompanied by preliminary test for the development of surface material, while developing the proper mixing ratio of base material.

end. Compressive strength

Compressive strength, which represents the mechanical properties of a material, is not only a design standard for various structures, but also a basic data for estimating tensile strength, flexural strength, elastic modulus, etc.

Comparing the compressive strength of the packaging material according to each compounding ratio is shown in Table 4.

Compressive strength of soil-hardened mixed soil Formulation Name Compressive strength (kgf / ㎠) % Increase in strength 7 days 28 days 91 days 7-28 days 28-91 days E ₁ 10.81 17.37 18.87 60 8 E ₂ 18.36 22.16 27.36 20 23 E ₃ 21.44 34.28 48.18 59 40 E ₄ 23.46 49.24 59.56 109 20 E ₅ 26.94 61.24 69.98 127 14 E ₆ 12.57 19.02 20.97 51 10 E ₇ 21.36 24.26 30.42 13 25 E ₈ 23.95 39.74 53.22 65 33 E ₉ 26.99 61.64 65.19 128 5 E ₁₀ 28.76 68.84 75.30 139 9 E ₁₁ 13.46 23.81 25.01 76 5 E ₁₂ 22.86 30.37 36.27 32 19 E ₁₃ 31.65 53.59 59.23 69 10 E ₁₄ 32.36 64.50 71.34 99 10 E ₁₅ 36.40 70.10 80.21 92 14

The compressive strength of soil hardener mixed soils was different according to the mixing ratio and age. In the case of 7-day old soil mixed with only soil hardener (E ₁ ~ E ₅ ), natural soil E ₁ is 10.81 kgf / cm ² , whereas E ₂ is more than 18.36 kgf / cm ^2, so 5% of soil hardener is sufficient as base material. Do. Tillage furnace base material is suitable if the 7-day strength is 15 kgf / cm ² or more.

If you look at the compressive strength for 7 days (Table 4), it will not be 30kgf / cm ² until 10% of gravel is mixed (E _{1 to} E ₁₀ ), but if 20% of gravel and more than 10% of soil hardener are mixed (E _{13 to} E ₁₅ ) The surface material should be determined at this compounding ratio because it is larger than this value. Considering the passage of agricultural machinery, the compressive strength of mechanized tillage is usually 50 to 70 kgf / cm ² , so the mix design that can be used for the packaging of tillage is E ₅ and E ₉ , E ₁₀ , E ₁₄ And E ₁₅ . Since the compounding ratio is 15%, 20%, 10%, and 20% of soil hardener, the soil hardener is 15% and 10% of gravel are most suitable considering the high cost of the soil hardener.

I. Flexural strength

Table 5 shows the flexural strength test results of the packaging materials according to each blending ratio.

On the other hand, looking at Table 5 below, the flexural strength of the soil hardener mixed soil was 5% and 10% of the amount of soil hardener increased to 7 days strength, but 28 days and 91 days strength was small. At 15% of soil hardening agent, the strength increased more than 50% at all ages. And, when the gravel is mixed, the flexural strength is somewhat increased, but the degree is small.

Surface material with good flexural strength should contain more than 15% of soil hardener, and gravel incorporation has little effect on improving flexural strength. Since the flexural strength of mechanized tillage is 10 ~ 15 kgf / cm ^2, it is considered appropriate. Therefore, the compound that can be used as surface material is E _5, E ₉ , E ₁₀ , E _14, E _15, etc. In this case, it is appropriate to mix the soil hardener 15% and the gravel 10%.

Flexural Strength of Soil Hardened Soils Formulation Name Flexural strength (kgf / ㎠) % Increase in strength 7 days 28 days 91 days 7-28 days 28-91 days E ₁ 2.29 5.33 7.72 132 44 E ₂ 3.91 5.84 7.86 49 34 E ₃ 4.39 6.17 8.08 40 30 E ₄ 7.57 8.26 10.80 9 30 E ₅ 8.13 8.62 11.48 6 33 E ₆ 2.65 5.83 7.82 120 34 E ₇ 4.18 6.32 7.90 51 25 E ₈ 4.75 6.74 8.17 41 21 E ₉ 7.95 9.11 11.72 14 28 E ₁₀ 9.06 9.58 12.25 5 27 E ₁₁ 2.91 6.47 8.62 122 33 E ₁₂ 4.59 6.95 8.69 51 25 E ₁₃ 5.22 7.41 8.98 41 21 E ₁₄ 8.74 10.02 12.99 14 29 E ₁₅ 9.97 10.54 13.47 5 27

All. Ultrasonic Vibration Speed

Ultrasonic vibration velocity test is a method of nondestructive testing that can be applied from several cm to several m as a method of testing the performance of a member or structure by the propagation speed obtained from the propagation time of ultrasonic waves.

Table 6 shows the results of the ultrasonic vibration velocity test of soil hardener mixed soil by the test method.

Ultrasonic Vibration Rate of Soil Hardened Soils Formulation Name Ultrasonic Vibration Speed (m / s) 7 days 28 days 91 days E ₁ 1,812 1,895 1,984 E ₂ 1,838 2,006 2,097 E ₃ 1,860 2,070 2,178 E ₄ 1,934 2,217 2,284 E ₅ 1,984 2,316 2,357 E ₆ 1,902 1,989 2,083 E ₇ 1,935 2,105 2,207 E ₈ 1,958 2,179 2,293 E ₉ 2,036 2,334 2,405 E ₁₀ 2,088 2,438 2,481 E ₁₁ 1,997 2,088 2,187 E ₁₂ 2,093 2,234 2,314 E ₁₃ 2,158 2,332 2,385 E ₁₄ 2,415 2,575 2,626 E ₁₅ 2,587 2,737 2,788

Ultrasonic vibrating speed was increased with increasing amount of soil hardener and aggregate. The reason for this is that the fine pore filling effect of soil hardener with smaller particles than soil and the amount of aggregates are reduced to prevent the propagation flow. Therefore, the more the amount of soil hardener and gravel is mixed, the greater the durability.

Therefore, the results of the optimum mixing ratio of the base material, the possibility of use of the surface material and the basic compounding estimation are as follows from various test results of the material mixed with the soil hardener.

① Compressive strength, flexural strength, ultrasonic vibration velocity and dynamic modulus of soil hardener mixed soils were increased as the amount of soil hardener and aggregate was increased in all ages and mixtures, and the increase by the amount of soil hardener was increased. The increase was greater than.

② Substrate material can fully function if 5% of soil hardener is mixed in consideration of necessary properties and economics.

In addition, the surface material in the present invention is based on the test results described above by adjusting the mixing ratio of soil hardener and gravel, fiber, etc., which can compensate for the shortcomings of the soil, as follows.

First, the preliminary test in the above test was carried out to change the amount of gravel incorporation 10%, 20%, soil hardener content 10%, 20%, fiber content 0.1%, 0.3%, etc. Nine kinds were blended, and the blend design thereof is shown in Table 7 below.

In addition, in order to test the surface material, the soil, gravel, and soil hardener were mixed well according to the component ratio in consideration of the properties of each material, and then mixed with water, followed by mixing and mixing the mesh type polypropylene fiber. The test was carried out according to the methods specified in KS and BS, and the average value of three repeated tests was used as the experimental result.

On the other hand, in the above test, if the test method of the compressive strength test, the bending strength test, the ultrasonic vibration velocity measurement, the permeability coefficient measurement is the same as the above-described test method of the base material, the test results are as follows.

Mixing design of surface material (Unit: wt%) Formulation Name Tosa Pebble Soil hardener Polypropylene fiber water S ₁ 100.0 0 0 0 18.70 S ₂ 79.9 10 10 0.1 17.35 S ₃ 69.9 10 20 0.1 17.62 S ₄ 79.7 10 10 0.3 17.31 S ₅ 69.7 10 20 0.3 17.58 S ₆ 69.9 20 10 0.1 15.42 S ₇ 59.9 20 20 0.1 15.66 S ₈ 69.7 20 10 0.3 15.38 S ₉ 59.7 20 20 0.3 15.62

end. Compressive strength

Compressive strength is not only design standard for various structures but also basic data for estimating tensile strength, flexural strength and modulus of elasticity. Comparing the compressive strength of the surface material according to each compounding ratio is shown in Table 8.

Result of compressive strength test of surface material Formulation Name Compressive strength (kgf / ㎠) % Increase in strength 7 days 28 days 91 days 7-28 days 28-91 days S ₁ 10.81 17.37 18.87 160 108 S ₂ 26.95 41.32 58.76 153 142 S ₃ 31.78 76.34 83.98 240 110 S ₄ 29.51 49.41 60.27 167 121 S ₅ 34.55 79.37 85.94 229 108 S ₆ 34.51 62.45 65.38 180 104 S ₇ 40.10 77.33 89.34 192 115 S ₈ 34.99 65.09 69.26 186 106 S ₉ 40.46 87.96 91.34 217 103

The compressive strength of the surface material was highly dependent on the mixing ratio and the age, and in the range of 26.95 to 40.46 kgf / cm ² for 7 days of age, it was 2.49 ~ 3.74 times higher in S ₂ ~ S ₉ than natural soil and S ₁ . On the 28th day, the range of 41.32 to 87.96 kgf / cm ² was 2.37 to 5.06 times higher than that of natural soil. On the 91st day, the range of 58.76 to 91.34 kgf / cm ² was 3.11 to 4.84. 2 times larger.

The 28-day compressive strength of surface material showed an increase in strength from 1% to 51% as the amount of gravel increased from 10% to 20%, and increased from 23% to 84% as the amount of soil hardener increased from 10% to 20%. As the fiber amount increased from 0.1% to 0.3%, it was 3 to 19% larger. On the other hand, 91-day compressive strength increased 6-14% as the amount of gravel increased from 10% to 20%, and increased 31-42% as the amount of soil hardener increased from 10% to 20%. As the fiber amount increased from 0.1% to 0.3%, it was 2-5% larger.

In addition, the 28-day strength increase for 7-year-olds was greater than the 91-day strength increase for 28-day-olds.

The compressive strength according to the age was increased as the amount of soil hardener, gravel and fiber was increased. This is because of the increased binding force.

Mechanized age 7 and 28 day compressive strength of gyeongjakro surface is is generally ^{30 kgf / cm 2, 50 kgf} / cm 2 or higher when viewed in agricultural working machine that is currently in use, and solid, blending can be used in the surface layer material packaging S ₃ To S ₉ .

I. Flexural strength

Table 9 shows the flexural strength test results of the surface layer materials according to the respective mixing ratios.

Bending Strength Test Result of Surface Material Formulation Name Flexural strength (kgf / ㎠) % Increase in strength 7 days 28 days 91 days 7-28 days 28-91 days S ₁ 2.29 5.33 7.72 232 144 S ₂ 5.24 6.85 8.26 130 120 S ₃ 9.93 1.21 13.62 102 133 S ₄ 7.34 8.95 11.42 121 127 S ₅ 13.59 17.15 19.27 126 112 S ₆ 6.75 9.75 12.76 144 130 S ₇ 13.43 16.75 19.51 124 116 S ₈ 7.85 10.32 13.45 131 130 S ₉ 13.99 17.26 20.06 123 116

In the case of 7-day flexural strength, it was 5.24 ~ 13.99 kgf / cm ² , which was 2.29 ~ 6.10 times larger in S ₂ ~ S ₉ than S ₁ , and in the 28-day age, S ₁ ranged from 6.85 to 17.26 kgf / cm ² . It was 1.28 ~ 3.23 times larger than that in the case of 91 days of age, and 8.26 ~ 20.06 kgf / cm ² was found to be 1.06 ~ 2.59 times bigger than the natural soils. 12-33% greater than the strength.

In the 28 days of age, the strength increased from 0.6% to 64% as the gravel amount increased from 10% to 20%, and the strength increased from 49% to 91% as the amount of soil hardener increased from 10% to 20%. As the fiber content increased from 0.1% to 0.3%, the strength increased by 3 ~ 67%, and the flexural strength of 91 days increased by 4 ~ 54% as the amount of gravel increased from 10% to 20%. As the amount of soil hardener increased from 10% to 20%, the strength increased by 41 to 64%, and as the fiber amount increased from 0.1% to 0.3%, the strength increased by 2 to 41%.

The 28-day strength increase for 7-year-olds was generally larger than the 91-day strength increase for 28-day-olds, indicating a significant increase in early age.

The flexural strength for each age was increased as the amount of soil hardener, gravel, and fiber was increased, because the relative soil hardening amount was increased and the fiber increased the binding force between the grains.

The flexural strength of the surface layer of tillage varies depending on the agricultural machinery, but generally 8 kgf / cm ² or more per 28 days will be appropriate, so it is possible to apply from the mixing ratio S ₃ .

All. Ultrasonic Vibration Speed

Table 10 shows the results of the ultrasonic vibration velocity test of the surface material.

Ultrasonic vibration speed of age 7 days were born from 1.16 to 1.51 times larger shown in S ₂ S ₁ ~S ₉ than in the range of 1,977~2,654m / s, in the range of 28 days S 2,201~2,864m / s _It was 1.18 to 1.53 times larger than ₁ , and it was 1.16 to 1.46 times larger than S ₁ in the range of 2,316 to 2,905 m / s at 91 days of age.

In the 28 days of age, the gravel amount increased from 10% to 20%, which was 4-12% higher, and the soil hardener amount increased from 10% to 20%, which increased 11 ~ 17%. As it increased to 0.3%, the increase of the ultrasonic vibration rate with the increase of the amount of soil hardening agent was somewhat large.

In the case of 91-day-olds, the amount of gravel increased from 10% to 20%, which was 4-12% higher, and the amount of soil hardener increased from 10% to 20%, which was 8-16% higher, and the fiber amount increased 0.1%. The increase of the ultrasonic vibration rate with the increase of soil hardener amount was as large as that of 28 days.

The ultrasonic vibration rate according to the age was larger as the amount of soil hardener, gravel, and fiber was increased. This is because the particles of the soil hardener are smaller than that of the granules, filling the micropores of the granules. This is because the factors that disturb the vibration speed are reduced.

Ultrasonic Vibration Speed Test Result of Surface Material Formulation Name Ultrasonic Vibration Speed (m / s) 7 days 28 days 91 days S ₁ 1,812 1,895 1,984 S ₂ 1,977 2,201 2,316 S ₃ 2,109 2,462 2,506 S ₄ 2,082 2,384 2,471 S ₅ 2,438 2,674 2,695 S ₆ 2,179 2,355 2,409 S ₇ 2,613 2,764 2,816 S ₈ 2,204 2,493 2,579 S ₉ 2,654 2,864 2,905

la. Permeability coefficient

Table 11 shows the permeability coefficient of the surface material.

Permeability Test Results of Surface Material Formulation Name Permeability coefficient (cm / s) E ₁ 6.151 X 10 ^-7 E ₂ 2.905 X 10 ^-7 E ₃ 6.051 X 10 ^-8 E ₄ 3.747 X 10 ^-7 E ₅ 9.523 X 10 ^-8 E ₆ 3.495 X 10 ^-8 E ₇ 4.163 X 10 ^-9 E ₈ 5.386 X 10 ^-8 E ₉ 5.969 X 10 ^-9

The permeability coefficient of the surface material tended to decrease as the amount of gravel and soil hardener increased and to increase as the amount of fiber increased. It is considered to be because the soil particles are densified by the production of ettringite. In all formulations, the coefficient of permeability was lower than that of natural soil and S _{1. When} soil hardener is mixed, it does not penetrate more than cement concrete. Therefore, soil hardening mixed soil can be used as a water barrier material of sanitary landfill facility.

The present invention utilizes the soil generated as a road paving agent in the construction of temporary roads and arable lands in agricultural lands as road paving agents to contaminate and minimize the surrounding soil by chemicals spilled from concrete or asphalt, and to generate them at construction sites. By making the best use of earth and sand, it is possible to reduce the landfill cost required for the disposal of earth and sand, minimize the environmental damage caused by the construction of landfill sites, and use road paving methods and road paving materials that can achieve the same paving effect as roads paved with concrete. As it is economical and environmentally friendly to open farmland such as farmland, it can be said to be very useful for environmental protection.

Claims (4)

Creating a foundation for road opening; A base material mixing step of mixing the earth and sand and the soil hardening agent of 5 to 6 Wt% of the earth and sand to install the base on the road surface when the base is formed; A base formation step of laying and compacting a base material mixed with soil and soil hardener; A surface material mixing step of mixing the soil, 12 to 15 Wt% soil hardener, 10 to 20 Wt% gravel, and 0.1 to 0.3 Wt% fibers of the soil to form a surface layer on the base layer; And Method for forming an environment-friendly mechanized tillage furnace comprising the step of laying and compacting the surface material, mixed with the soil, soil hardener, gravel, and fibers. The environmentally-friendly mechanized tillage composition of claim 1, wherein the soil hardener comprises 45 to 60 Wt% of slag, 10 to 30 Wt% of gypsum, 1 to 5 Wt% of aluminate, and the remainder of the potent cement. Way. The method of claim 1, wherein the fiber is polypropylene. The method of claim 1, wherein the fiber is 15 to 20mm long and mesh-like.