KR19980033429A - How to expand mechanized rural tillage - Google Patents

Abstract

(Purpose) The purpose of the present invention is to provide a method of expanding and expanding the mechanized rural tillage furnace that can shorten the time required for construction by accelerating the condensation reaction of cement and to solidify the cement even at low temperature below -5 ℃. The purpose of the present invention is to provide a mechanized rural tillage paving method for paving high and low road structures with solidification and installing ASP paving on the upper part.

(Constitution) A quick coating of fat was formed on the surface of quicklime, and after injection, quicklime, cement and an injection material made of a dissolving agent of the fatty acid were injected into the slurry and injected into a soft ground. After that, it is an expansion method of mechanized rural cultivation furnace which does ASP paving work.

Description

How to expand mechanized rural tillage

The present invention relates to a method for expanding the mechanized rural tillage. More specifically, the present invention relates to an economical packaging method of solidifying rovan soil particles by injecting and mixing a predetermined amount of solidifying agent into a conventional soil cement method in a rural tillage ground.

In the past, the rural cultivation method for the expansion of rural cultivation roads was to increase the cost of construction due to the excessive labor, equipment, and material input due to the hassle such as roadbed excavation, residual transporting, dust scattering management, etc. The burden is heavy, and the cost of maintenance is also high.

Although the construction method was researched and studied on the soft ground of various rural farming fields both at home and abroad, the Korea Institute of Construction Technology has applied the research and development to soils with low water content. The results of the study on the arable land in Korea, where the agricultural land is generally soft ground, are not so many, and the representative examples of the use of waste soil and soft ground are Busan Metropolitan City and the metropolitan landfill.

The conventional techniques and methods are used to guarantee the quality of the soil as it is constructed with concrete and ASP paving method with low and high moisture content such as organic soil, soft soil, and viscous soil. In addition, the additional burden of maintenance costs has become a wasteful factor, as well as a waste of budget.

In order to expand this vast rural farmland by conventional construction methods, it is necessary to take into account the heavy burden of financial expenses such as overburden of financial burden, unsatisfactory quality and long-term requirements for achieving policy goals.

The present invention is to solve the conventional problems as described above

① Completely improve the construction process from the input of the tillage construction method, which is carried out by the conventional construction method, to leave the ground state without replacing the tilling ground, and use it as raw materials to reduce construction costs and ensure quality.

② Shorten the air by introducing a solidifying agent of pollution-free ingredients developed to accelerate the condensation reaction of the motto of tillage (general soil, soft soil, organic soil, etc.)

③ We guarantee the quality by inputting equipment that can easily handle the mixing and stirring of motto, cement and hardener by tillage.

④ It is aimed to provide a way to achieve the policy goal early by enabling the condensation of cement to be solidified even under low temperature below -5 ℃ by using a farming season, so that it can be paved in mechanized rural tillage in winter.

1 is a schematic cross-sectional view showing the in-situ stirring method of the mechanized rural tillage expansion method of the present invention.

Figure 2 is a flow diagram showing the installation method of agitation in the mechanized rural tillage expansion method of the present invention.

(Explanation of the sign)

One … 2 silo. Silo 3… Tank

4 … Water storage tanks 5, 6. Hose 7,8... meter

9. Mixer 10,11... Pump 12,13... hose

14. Meter 15,16. Hose 17. agitator

18. Pressure pump 19. Pressure hose 20. Mixer

21. Hollow shaft 22. Stirring blade 23. Solid

24. Packing ground 25. Soft ground 26. Backhoe Equipment

27. Moto Hoppa 28. Motocombea 29. Motto

30. Primary moto-crusher 31. Transport carrier 32. 2nd Moto Mix Stirrer

33. Mixed stirred soil improved 34. Improved Towing Vehicles

In order to achieve the above object, the injection method of the present invention forms a film of fatty acid on the surface of quicklime, and after the formation, an injection agent consisting of quicklime, cement and a dissolving agent of the fat, which form a surface coating by fatty acids, in a slurry form. By injecting and solidifying the rural tillage into soft ground by mechanization, the ASP pavement is put on it.

As said solubilizer, either potassium chloride or potassium carbonate which is a potassium salt is used.

0.1-1 wt% of fatty acids, such as palm oil, are blended with powdered quicklime to form a fatty acid film on the surface of quicklime, and 10-100 wt% of quicklime with a constant surface coating is added to cement. It is good to mix | blend potassium salt with 0.05-1.0 wt% (0.025-0.5 wt%, respectively, when using both potassium chloride and potassium carbonate) with respect to quicklime which formed the film.

The cement may be used, such as portland cement, crude steel cement, crude steel cement.

By injecting the slurry-based import agent into a mechanized rural cultivation furnace, the film of fatty acid on the surface of quicklime is dissolved by the action of potassium salt, and the exposed quicklime reacts directly with the moisture in the slurry to absorb moisture in the slurry. The moisture is evaporated and dehydrated by the exotherm accompanying this reaction, and the temperature becomes high, thereby allowing the cement condensation reaction to proceed rapidly.

The amount of fatty acid at the time of injection can be adjusted so as to dissolve within 5 minutes to 3 hours after the injection into the injection target by the selection of the enemy within the above range, and the water can be adjusted in consideration of the water to be injected. By adjusting, temperature can be raised to 10-50 degreeC rapidly, and the condensation reaction of cement can be advanced rapidly by this. For example, the cement mortar can be improved in proportion to the temperature x time by setting the temperature up to 80 ° C. as a high temperature.

(Action)

When quicklime is connected to water, it reacts rapidly and becomes hydrated, so it is impossible to slurry the quicklime as it is. It can be made to react with water as a ratio by dissolving the film of fatty acid by the action of the solubilizer which consists of potassium salts.

Therefore, it is possible to use the absorption exothermic reaction when reacting with quicklime and water and changing to calcination. In other words, the water content of the slurry is absorbed by the absorption and the exotherm, the water content is lowered, the evaporation and dehydration are performed again, and the cement condensation reaction can be rapidly proceeded even in the winter by the exotherm. In addition, the absorption of quicklime causes the volume to expand, thereby eliminating the freezing phenomenon, which is the biggest problem of cement slurry.

Example 1 In-situ Stirring Method-Cultivation Plant of Low Water Quality Soil

Next, the Example of this invention is described.

The mechanized rural tillage paving method of the present invention of FIG. 1 is a schematic sectional drawing which shows the method of stirring-processing the tiller furnace with low water content in the original position.

The in-situ stirring method puts the arable soil, which is the original soil itself, into the original state, sprays the cement on the rovan according to the mixing ratio such as the depth according to the design, and then stirs the raw ground and the cement evenly by using a stabilizer equipment (special equipment). The solidified water dissolved thereon is sprayed, and a voltage is applied to the roll. At this time, when the determined depth is 50cm, it is a method to measure the compaction weight (about 10cm) that is applied to the roller so that there is no problem in design and quality.

As shown in Fig. 1, the quicklime powder in which the surface coating of palm oil is formed with fatty acids is stored in the silo 1, and the cement is stored in the silo 2. Meanwhile, potassium salt is dissolved in water in the tank 3 and stored, and water is stored in the tank 4.

And the quicklime powder which formed the surface coating of the palm oil in the cyclo 1 and the cement in the silo 2 are sent to the meter 7 and 8 through the hoses 5 and 6, respectively, and the meter (7) ) And (8) calculate the requirements and send them to the mixer (9).

On the other hand, the dissolved solution of the potassium salt in the tank 3 and the water in the tank 4 are transferred to the meter 14 via the hoses 12 and 13 by driving the respective pumps 10 and 11, The meter 14 calculates the required amount and transfers it to the mixer 9 via the hose 15. In this mixer 9, the quicklime powder which forms the surface coating of palm oil, cement, potassium chloride, and water are agitated, and the slurry is driven through a pressure feed hose 19 by means of a pressure feed pump 18. To the mixer 20 above.

Then, the slurry is injected from the hollow rotary shaft 21 into the mechanized rural tillage paving ground 24 while stirring the mechanized rural tillage paving ground 24 by the rotation of the hollow rotating shaft 21 and the stirring blade 22 of the mixer 20. do. After injection, palm oil, the surface coating of quicklime, is dissolved by the action of potassium salt. Thereby, the absorption exothermic reaction at the time when quicklime reacts with water and changes into a calcination cycle can be utilized.

In other words, by absorbing the moisture in the slurry by absorption and heat generation to reduce the water content in the mechanized rural tillage pavement ground 24, and furthermore, it is possible to rapidly accelerate the condensation reaction of cement even in the winter by exothermic heat. And it becomes solidified bodies 23, such as cement. Next, test examples of the strength and permeability coefficient of the solidified body by the injection method of the present invention will be described.

Test Example 1

With respect to 100 kg of quicklime powder, 0.3 kg of palm oil were mixed as fatty acids to form a coating of palm oil on the surface of the quicklime powder, and the quicklime disappeared from affinity with water and was not reacted with water. 352 kg of crude steel cement was selected for 100 kg of the quicklime. 263 g of potassium chloride, which is a solvent of palm oil, was selected for the quicklime and the crude cement for forming these surface coatings.

At the above mixing ratio, firstly, the crude cement having the surface coating was mixed. Furthermore, 351 liters of water was added to the sum of the quicklime and the crude cement having the surface coating, and potassium chloride was mixed and dissolved to form a slurry. And it mixed with 547 kg of soil, and obtained the hardening | curing agent.

Test Example 2

0.3 kg of palm oil was mixed as a fatty acid with respect to 100 kg of quicklime powder, a film of palm oil was formed on the surface of the quicklime powder, and the affinity between quicklime and water was lost and it was not made to react with water. 292 kg of crude steel cement was selected for 130 kg of the quicklime. 230 kg of potassium chloride, which is a solvent of palm oil, was selected for the quicklime and the crude cement for forming these surface coatings.

With respect to the blending ratio, in the same manner as in Test Example 1, first, the quicklime and the rough cement having the surface coating were mixed, and 318 L of water was added to the sum of the quicklime and the rough cement having the surface coating. Potassium chloride was mixed and dissolved to form a slurry. And it mixed with 493 kg of soil, and obtained the hardening | curing agent.

Test results of the uniaxial compressive strength in Test Examples 1 and 2 are shown in Table 1 below.

division Uniaxial compressive strength (㎏ / ㎠) 2 hours later 3 hours later 24 hours later Test Example 1 1.50 3.56 7.01 Test Example 2 0.11 0.49 7.03

As apparent from Table 1, it can be seen that by changing the amount of palm oil, the dissolution time, that is, reacted with quicklime and water, can change the time of cement coagulation. In addition, it is apparent that sufficient strength can be obtained when the mixture is agitated and mixed with the alumina from the uniaxial compressive strength and injected into the alumina particles having lost cohesion, and solidified by injecting the pavement into the pavement 24 by the subgrade tillage. .

In addition, since it is possible to perform the exothermic reaction of absorbing quicklime by dissolving fatty acids after injection into the injection target as described above, it is obvious that the freezing phenomenon of cement due to the expansion of volume due to absorption can be prevented, so that it can be installed even in winter. . In addition, by changing the amount of palm oil as described above, the dissolution time, that is, quicklime can react with water to change the cement reaction time of the cement, so that the construction time can be adjusted, even in construction that requires completion in a short time It can respond.

According to the calculation, for example, in the case of constructing the soil pile, the construction period required for 14 to 28 days in the case of the injection method using the conventional cement-based hardener can be shortened to 1 to 7 days in the case of the injection method of the present invention. Even in ultra-soft ground, it is apparent that by using the mechanized rural tillage paving method of the present invention, it is possible to run agricultural machinery and the like in a short time, and to drastically shorten the air and reduce the cost of construction cost.

Example 2 laying agitation method-cultivation furnace of high water quality soil

Next, Example 2 of the present invention will be described. Figure 2 as shown in Figure 2 of the mechanized rural tillage paving method of the present invention, the soil low water content in the tillage in accordance with the mixing ratio in the original state, it was described that the mixing and agitation treatment with special equipment.

As the ground of the rural tillage is not fixed, the in-situ stirring method described in FIG. 1 is geographically formed into highlands, lowlands, and so on. You can see that this is the way to handle the state.

The lowland arable land, which is geographically located, has a high water content and is mainly soft ground. Since the soft ground is clay porous, large lumps are generated. The clay lumps are dried and finely ground, so that high quality is not guaranteed unless mixed and agitated with cement and hardener. Shall be. Digging up the ground according to the design and mix ratio, and bringing it up to a certain place with bulldozers and special equipment, putting it into a mechanical ground kneader, mixing and stirring it according to the mixing ratio of the weighting device, and installing it on a certain road surface as a dump truck. That's the way.

The laid soil is stopped regularly with cradles, and is cured after being vibrated and cleaned with Magadamola. In case of difficulty in mobilizing large equipment due to the small amount of construction, it is also preferable to use a special stabilizer. In this case, it is necessary to prepare in advance in consideration of the way to lower the water content of the original soil itself.

Example 3

As shown in FIG. 2, the motto soil is introduced from the backhoe equipment 26 into the motohopa 27. After the motocomb 28 carries the soil to the moto-feeding hopper 29, the motocomb 28 crushes the transported moto in the moto-crusher 30 that crushes the primary moto mass. The crushed moto was weighed and put into the secondary moto mixing agitator with a carrier comb 31, while the slurry mixed with cement, potassium chloride and water in the pressure feeding hose 19 of FIG. 1 was put into the secondary moto mixing stirrer, and mixed. Agitated and improved soil 33 was transported to an improved soil transport vehicle 34 to a rovan laying site, and then ASP packaged thereon.

(1) Construction of low and high soft ground tillage

① Low Water Ground Construction and Stabilizer Equipment Input Process

Viscous soils are mainly high in water content and fine porous, and have strong adhesive strength.The main factor is the water content of clay soils, and the clay is changed into agglomerate state when excavated, and the solidified material and cement are added and mixed and stirred. Since the solidified component does not penetrate into the viscous soil in the state, quality curing occurs when the voltage is cured as it is. This equipment does not use the plant method, and various equipment developed and put into such low-function ground construction is described in the reference table of Clause 7, and it uses special equipment that is a stabilizer.

As a method of reducing the water content in the viscous soil, 0.5 to 3% of quicklime is sprayed onto the viscous clay to be stirred for 12 to 24 hours before construction, and then mixed and agitated by a stabilizer or forklift equipment.

In the construction of this construction, 80 kg to 100 kg of quicklime, 1 kg of potassium salt, and 10 L of water per 1 m 3 of soft soil are tilled by tillage and laid according to the construction method of FIG.

② Laying-type mixed semi-process method-Ultra soft ground plant construction method

It is easy to transport and move the soft ground of the tillage to the area formed of high water quality soil and organic soil, and make suitable plant and transport it to the point where the soft ground and cement, quicklime, fatty acid, potassium salt, water, etc. are mixed and laid down , Voltage, to cure.

③ Super soft ground construction method of reclaimed business district

As a method for paving the ultra soft ground such as a port construction business district, special equipment which is a stabilizer for Busan amphibians can be used.

④ Stability (immersion, sewing, test)

The field soil within the 80% water content, testing the result field soil modified soil both 2 days are infiltration esque this does not occur even when a well is determined Ed Lin guide development soil and the particles are bonded firmly, bulchim pitching effect (hydraulic conductivity 10 ^{- 7} = 0.000001 cm / sec) to the maximum, and even at this time, the pitcher is pollution free.

Example 4 ASP Packaging

Next, the construction quality will be explained in accordance with Examples 1 to 2 of the present invention and the permanent quality will be explained.

Conventional ASP pavement method is a road construction method and process is based on the relevant regulations, auxiliary base material (mixed aggregate), prime coating (RSC-3.80 l / a), tack coating (RSC-4.30 l / a), base asphalt ( # 467), tack coating (RSC-4.30 l / a), surface asphalt (# 78) process and materials have been burdened by the economic burden, but as shown in the following reference NO.1 chart, conventional tillage packaging It is a technology that the quality of the post-management is good even though the treatment costs such as labor cost, material cost, and environmental management of the transport site, which are required for the method of Conc and ASP, are improved dramatically in the construction area.

When the depth is 50 cm by tillage, 45 cm is mixed with agitated soil, cement, quicklime, fatty acid, potassium salt, water, etc., and the whole motto itself is a solid, and 5 cm ASP is placed on it. As a result, the quality of the furnace can be secured permanently.

As described above, according to the mechanized rural tillage packaging method of the present invention, after injection of a slurry-like filler into the mechanized rural tillage packaging, the film of fatty acid formed on the surface of the quicklime is dissolved by the action of a dissolving agent, thereby reacting with water. It can be made, and the absorption exothermic reaction can be used since it changes into calcined stone by reacting with quicklime and water in a desired injection object.

In other words, by absorbing the water in the slurry by absorption and heat generation to lower the water content in the injection target, and further exothermic dehydration, it is possible to rapidly advance the condensation reaction of cement even in the winter by heat generation. In addition, by absorbing quicklime, the volume thereof expands to solve the freezing phenomenon, which is the biggest problem of cement slurry. Therefore, it can be used for a wide range of work such as solidification of particles of alumina or coagulation of soft ground, which are agitated and mixed with alumina without being constrained by the place and seasons. Mechanized rural tillage can be established.

Claims (3)

Forming a coating of fatty acid on the surface of quicklime, and injecting the quicklime, cement and an injection material which is a solubility of the fatty acid in the form of a surface coating by the fatty acid into a slurry to be injected into a soft ground or the like; How to expand mechanized rural tillage. The method of claim 1, wherein the solubilizer comprises at least one of potassium chloride and potassium carbonate as potassium salts. Method for expanding the mechanized rural cultivation furnace, characterized in that the ASP is paved on the whole structure of the solidified soil formed by the in-situ stirring method and laying method.