[go: up one dir, main page]

WO2014058145A1 - Procédé de stabilisation et d'amélioration de sol utilisant un biopolymère - Google Patents

Procédé de stabilisation et d'amélioration de sol utilisant un biopolymère Download PDF

Info

Publication number
WO2014058145A1
WO2014058145A1 PCT/KR2013/006906 KR2013006906W WO2014058145A1 WO 2014058145 A1 WO2014058145 A1 WO 2014058145A1 KR 2013006906 W KR2013006906 W KR 2013006906W WO 2014058145 A1 WO2014058145 A1 WO 2014058145A1
Authority
WO
WIPO (PCT)
Prior art keywords
soil
biopolymer
weight
parts
polymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/006906
Other languages
English (en)
Korean (ko)
Inventor
조계춘
장일한
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Advanced Institute of Science and Technology KAIST
Korea Institute of Civil Engineering and Building Technology KICT
Original Assignee
Korea Advanced Institute of Science and Technology KAIST
Korea Institute of Construction Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Advanced Institute of Science and Technology KAIST, Korea Institute of Construction Technology filed Critical Korea Advanced Institute of Science and Technology KAIST
Priority to US14/434,188 priority Critical patent/US9944855B2/en
Priority to CN201380064168.2A priority patent/CN105143400A/zh
Priority claimed from KR1020130090883A external-priority patent/KR101551920B1/ko
Priority claimed from KR1020130090894A external-priority patent/KR101544145B1/ko
Publication of WO2014058145A1 publication Critical patent/WO2014058145A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds

Definitions

  • the present application relates to a method of stabilizing and improving soil using a polymer viscous biopolymer, a soil composition for promoting germination or growth of vegetation, a composition for preventing soil erosion, and a soil building material or member.
  • the present application is to provide a method of stabilizing and improving the soil, which can promote vegetation growth while preventing erosion of the soil and enhancing strength and durability by using a polymer viscous biopolymer.
  • a first aspect of the present application provides a method of stabilizing and improving soil, comprising adding a polymeric viscous biopolymer to the soil.
  • the second aspect of the present application provides a soil composition for promoting germination or growth of vegetation, which is prepared by the method of stabilizing and improving the soil of the first aspect of the present application, and which comprises a polymer viscous biopolymer.
  • the third aspect of the present application is prepared by the method of stabilizing and improving the soil of the first aspect of the present application, and provides a composition for preventing soil erosion, comprising a polymer viscous biopolymer.
  • a fourth aspect of the present application provides an earth building material or member, prepared by the soil stabilization and improvement method of the first aspect of the present application, and comprising a polymer viscous biopolymer.
  • Soil erosion is affected by soil moisture, particle size distribution, organic matter content, and surface vegetation. In the case of deserts with severe soil loss, all of these conditions are poor, so in order to improve the resistance to soil erosion, the properties of the soil itself must be improved rather than blocking external factors. To this end, an environmentally friendly method is required to maintain soil moisture for a long time, increase the bonding strength (adhesive force) between soil particles, and to grow vegetation smoothly in the future.
  • Existing chemical treatment methods focus only on primary soil strength enhancement, and there is a lack of consideration of creating a vegetation environment to prevent permanent erosion.
  • the soil stabilization and improvement methods of the present application not only rely on existing nitrogen-based or phosphorus-based chemical fertilizers or artificial soils, but also promote vegetation germination and growth in an environmentally friendly manner, as well as stabilizing vegetation (sufficient rooting of roots).
  • the physical stabilization of the sowing soil can be realized simultaneously until
  • the soil stabilization and remediation method of the present application maintains the initial stabilization of the soil, there is no fear of contamination and eutrophication of groundwater or rivers, and the environment in which the biopolymers are naturally biodegraded and returned to the original soil over time. It has friendly advantages. Accordingly, the soil stabilization and improvement method of the present application is not only in the field of eco-friendly vegetation, but also in the construction of vegetation surface at large construction sites, river banks and waterfront greening projects, initial stabilization of road and rail slopes, large-scale farmland formation, rooftops and cities. It can be effectively used in various fields such as agriculture.
  • the present application can contribute greatly to the full-scale commercialization of biopolymers by providing new uses for applying environmentally friendly biopolymers to soil stabilization and improvement.
  • 1 is a view showing a soil sample after a single rainfall simulation according to an embodiment of the present application. Untreated loess, xanthan gum treated loess, and beta-1,3 / 1,6-glucan treated loess from the left.
  • Figure 2 shows an indoor experimental configuration for rainfall erosion simulation according to an embodiment of the present application.
  • Figure 3 shows a test cultivation picture of the biopolymer treated soil according to an embodiment of the present application.
  • Figure 4 shows the vegetation growth results of the biopolymer treated soil over time according to an embodiment of the present application.
  • Figure 5a shows an electron projection micrograph of the untreated loess and vegetation roots according to an embodiment of the present application.
  • Figure 5b is an electron projection microscope photograph of the beta glucan treated loess and vegetation roots according to an embodiment of the present application.
  • Figure 5c is an electron projection micrograph showing the xanthan gum treated loess and vegetation roots according to an embodiment of the present application.
  • FIG. 6 shows a biopolymer treatment process through heat treatment according to an embodiment of the present application.
  • FIG. 7 is a graph showing the results of measuring the strength of the biopolymer-treated soil (ocher) according to an embodiment of the present application.
  • FIG. 8 is a graph showing a result of measuring the strength of the biopolymer-treated soil (sand) according to an embodiment of the present application.
  • Figure 9 shows the rapid cooling and curing conditions of the biopolymer-treated soil according to an embodiment of the present application.
  • FIG. 10 is a graph showing the behavior under rapid cooling and curing conditions of the biopolymer-treated soil according to an embodiment of the present application.
  • FIG. 11 is a conceptual diagram illustrating a method for manufacturing an environmentally friendly soil building material using a thermal gelling biopolymer according to one embodiment of the present application.
  • FIG. 12 is a conceptual diagram of a ground treatment method using a thermal gelling biopolymer according to one embodiment of the present application.
  • FIG. 13 shows a conceptual diagram of a biopolymer-treated vegetation ground composition using a spraying method according to an embodiment of the present application.
  • FIG. 14 shows a conceptual diagram of a biopolymer-treated vegetation ground composition using a wet mixing and spreading method according to an embodiment of the present application.
  • FIG. 15 shows a conceptual diagram of a biopolymer-treated vegetation ground composition using a dry mixing / spray method according to an embodiment of the present application.
  • FIG. 16 illustrates a conceptual diagram of partition division for eco-friendly waterside space composition using a biopolymer according to one embodiment of the present application.
  • 17 is a graph showing the bending strength of the building material using a biopolymer according to an embodiment of the present application.
  • the term "combination (s) thereof" included in the representation of a makushi form refers to one or more mixtures or combinations selected from the group consisting of the components described in the representation of makushi form, It means to include one or more selected from the group consisting of the above components.
  • cationic aqueous solution means an aqueous solution containing a cation, and may include, for example, an aqueous solution containing an alkali metal or alkaline earth metal ion, but may not be limited thereto.
  • the alkali metal comprises a Group 1 metal consisting of Li, Na, K, Rb, and Cs, which may provide monovalent cations, and the alkaline earth metals may provide divalent cations, Be, Mg, Ca , Group 2 metals consisting of Sr, Ba, and Ra.
  • Hwang-to means yellowish or yellowish brown granite, in which fine grains of rock broken by weathering in the interior of the continent are blown off and stacked.
  • soil is used in the same sense as the soil.
  • a first aspect of the present application provides a method of stabilizing and improving soil, comprising adding a polymeric viscous biopolymer to the soil.
  • the polymer viscous biopolymer may be used without limitation as long as it is a polymer material produced from an organism, but may not be limited thereto.
  • the polymer viscous biopolymer may include a substance having glucose as a basic unit, and may be broadly classified into a polysaccharide and an amino-acid series.
  • Biopolymers can be classified into high-molecular chains and gelation biopolymers according to their shape.
  • the high molecular chain biopolymer may include beta-1,3 / 1,6-glucan (Polycan TM ), alpha glucan, curdlan, and the like.
  • the amino acid-based biopolymer may include chitosan and gamma fiji, ⁇ PGA, but may not be limited thereto.
  • the polymeric viscous biopolymer is about 20 parts by weight or less, for example, about 0.00001 parts by weight to about 15 parts by weight, about 0.00001 parts by weight to about 10 parts by weight based on about 100 parts by weight of soil.
  • the polymer viscous biopolymer may be to expand the pores in the soil, to maintain the water-containing properties, and to increase the bonding strength between the soil particles, but may not be limited thereto.
  • adding the polymer viscous biopolymer to the soil is performed by mixing the polymer viscous biopolymer with the soil, spraying on the surface of the soil, or injecting into the soil It may be, but may not be limited thereto.
  • the present application may include adding the polymer viscous biopolymer to the soil in a powder state, but may not be limited thereto.
  • the polymer viscous biopolymer may be directly mixed with the soil, or the polymer viscous biopolymer powder or suspension or aqueous solution may be applied to the surface of the soil to form a coating, or injected into the soil, but is not limited thereto. You may not.
  • after directly mixing the polymer viscous biopolymer with the soil it may be installed on the surface of the target area, but may not be limited thereto.
  • it may include adding the polymer viscous biopolymer to the soil in the form of an aqueous solution or a basic aqueous solution, but may not be limited thereto.
  • a suspension or an aqueous solution of the polymer viscous gelling polysaccharide biopolymer may be added as it is, or a salt may be added to the suspension or the aqueous solution of the biopolymer to prepare a basic aqueous solution, for example, a basic aqueous solution having a pH of about 9 or more. It may be added to the soil by lowering the viscosity, but may not be limited thereto.
  • the acidic aqueous solution may be sprayed to promote aggregation of the infiltrating polymer viscous gelled polysaccharide biopolymer, but may not be limited thereto.
  • the polymer viscous biopolymer after adding the polymer viscous biopolymer to the soil, it may further include adding a cation of an alkali metal or alkaline earth metal, but may not be limited thereto.
  • a cation of an alkali metal such as Na + , K + or an alkali earth metal such as Ca 2+ , Mg 2+ may be added to induce gelation of the biopolymer to form a solid soil-biopolymer mixture.
  • this may not be limited.
  • the polymer viscous biopolymer after adding the polymer viscous biopolymer to the soil, it may further include adding an acidic aqueous solution or a cationic aqueous solution of pH about 5 or less, but is not limited thereto.
  • the cationic aqueous solution may include, for example, an aqueous solution containing alkali metal or alkaline earth metal ions.
  • the addition of alkali metal or alkaline earth metal ions to the soil may further improve the binding properties with the soil. Can be.
  • the method may further include heating and cooling the soil, but may not be limited thereto.
  • the polymer viscous biopolymer may be added to the soil, and then sufficiently heated at about 80 ° C. to about 120 ° C., and then cooled to about 40 ° C. to about 60 ° C. or less to induce gelation of the biopolymer.
  • the method may further include adding a cation of an alkali metal or an alkaline earth metal, for example, an alkali metal cation such as Na + , K + , or an alkali earth metal such as Ca 2+ , Mg 2+, or the like. It may be, but may not be limited thereto.
  • after spraying the polymer viscous biopolymer on the surface of the soil may further include spraying water, acidic aqueous solution, and / or cationic aqueous solution, but may not be limited thereto.
  • water, acidic aqueous solution, and / or cationic aqueous solution may not be limited thereto.
  • an acidic aqueous solution having a pH of about 5 or less may be sprayed to strengthen the gel structure of the biopolymer in the soil, but may not be limited thereto.
  • the soil stabilization and improvement method may be to promote germination or growth of vegetation, but may not be limited thereto.
  • the soil stabilization and improvement method may be to enhance the soil erosion resistance, but may not be limited thereto.
  • the polymer viscous biopolymer may be added to the soil in various ways as follows according to the type and purpose of the polymer viscous biopolymer used, but may not be limited thereto:
  • Polymeric viscous chain polysaccharide biopolymers are generally polymers having a molecular weight of about 10,000 Da or more, and the fibers are entangled with each other in suspension or aqueous solution to show high viscosity. These polymer viscous chain polysaccharides have a property of binding well with soil particles, especially clay soil particles, due to the electrical properties of the surface. This mutual behavior can be used to enhance the soil stiffness and resistance to erosion by using polymer viscous chain polysaccharides. Soil erosion resistance enhancement method using the polymer viscous chain polysaccharide according to the present application is as follows:
  • the water After spraying the powdery polymer viscous chain polysaccharide on the soil surface, the water is sprinkled to induce penetration into the soil, and also causes the hydrophilic polymer viscous chain polysaccharide to expand and entangle with each other. It is a method of forming a polymer film.
  • the viscosity is controlled by varying the concentration of the suspension or aqueous solution according to the type of soil. It can facilitate infiltration, combine with soil upon infiltration to form a soil-biopolymer matrix, and increase the soil's stiffness as moisture dries.
  • the soil or transported soil is mixed with biopolymer and water to make a soil mixture.
  • the biopolymer is added at a ratio of about 0.0001% to about 5% of the dry weight of the soil, and water is about 10% to about 200 by weight of the soil, depending on the type of soil (sand or clay).
  • a soil-biopolymer mixture soil while spraying or injecting powder or liquid biopolymer while stirring soil with a plow or auger, by mixing the surface of the soil with the biopolymer while simultaneously stirring the surface of the soil. How to formulate.
  • Soil-bio is obtained by injecting a polymer viscous chain polysaccharide suspension or aqueous solution having a concentration of about 0.00001% to about 10% into the soil at high pressure by infiltrating and diffusing the biopolymer suspension or aqueous solution into the soil.
  • the polymer treatment ground is formed.
  • the soil-biopolymer mixture surface was compacted and then compacted to improve adhesion to the original layer of the soil-biopolymer mixture soil, as well as to increase the density of the soil-biopolymer mixture soil, thereby improving rigidity and durability. You can.
  • a high molecular viscous chain polysaccharide biopolymer is used.
  • Polymeric viscous chain-type polysaccharides have high hydrophilicity to maintain the moisture environment in the soil, as well as improve the aeration and water permeability of the soil, and further improve the growth of plant roots, thereby promoting overall vegetation.
  • Specific implementation method is as follows.
  • Promoting the germination and growth of the plant by directly cultivating the plant using a mixed soil containing a polymer viscous chain polysaccharide biopolymer of about 0.0001% to about 5% relative to the dry weight of the soil as vegetation soil.
  • the use of a polymer viscous chain polysaccharide suspension or an aqueous solution of about 0.00001% to about 10% as a growing water is used to suppress the loss of water supplied and to improve the durability of the soil around plants. At the same time it is effective in preventing plant growth.
  • Polymeric viscous gelled polysaccharides refer to materials that show low viscosity in suspension or aqueous solution, but form a gel with high stiffness through chemical or heat treatment. Specifically, the following methods are suggested as ways to increase the strength.
  • the polymer viscous gelled polysaccharide suspension or aqueous solution at a concentration of about 0.00001% to about 10% is sufficiently heated to about 80 ° C. to about 120 ° C., followed by soil and water content in the range of about 10% (sand) to about 200% (clay). Cooling while mixing with soil in the conditions to induce gel formation at a temperature of about 40 °C to about 60 °C or less to form a solid soil-biopolymer mixed soil.
  • Polymeric viscous gelled polysaccharide biopolymers generally exhibit low viscosity in an untreated neutral (pH about 7) suspension or in water, but form gels with high stiffness through chemical or thermal treatment. These polymer viscous gelled polysaccharides combine well with soil particles, especially clay soil particles, due to the electrical properties of the surface to form a robust soil-biopolymer matrix. By using this mutual behavior, it is possible to enhance the soil stiffness and resistance to erosion by using a polymer viscous gelled polysaccharide.
  • the specific form is as follows:
  • the water After spraying the powdery polymer viscous gelled polysaccharide on the soil surface, the water is sprinkled to induce penetration into the soil and at the same time, the hydrophilic polymer viscous gelled polysaccharide is induced to expand and coagulate with each other. Can be formed.
  • first spraying water uses pure water and the second spraying water sprays an acidic or cationic aqueous solution of low pH (pH about 5 or less)
  • second spraying water sprays an acidic or cationic aqueous solution of low pH (pH about 5 or less)
  • an acidic aqueous solution pH of about 5 or less
  • a cationic aqueous solution is directly sprayed.
  • the viscosity is controlled by varying the concentration of the suspension or the aqueous solution according to the type of soil. It is easy to infiltrate, combine with soil upon infiltration to form soil-biopolymer matrix, and increase the soil's stiffness as the moisture dries.
  • three suspension or aqueous solution sprinkling methods exist. First, spraying the biopolymer suspension or the aqueous solution as it is, second, adding the salt to the biopolymer suspension or the aqueous solution to increase the pH (about 9 or more) to lower the viscosity of the suspension or the aqueous solution, and then spraying to increase the permeability in the ground; Third, the first polymer of the biopolymer suspension or the aqueous solution of which the pH was raised to about 9 or more by adding salts to the soil, and then sprinkled with an acidic aqueous solution having a low pH (pH of about 5 or less) by the second spray, was infiltrated. There is a method for promoting the aggregation of gelling polysaccharides.
  • a method of pre-mixing soil and high-molecular viscous gelled polysaccharides and placing them on the surface to form a package or coating wherein the soil or transported soil is viscous gelled polysaccharide biopolymer, neutral or alkaline water (pH about 6 to about 13) is mixed with the 13) to create a soil dough (mixture), and then poured on site, specifically, the biopolymer is added in a ratio of about 0.0001% to 5% of the dry weight of the soil, water is the type of soil (sand or clay quality) )
  • the method to form the soil dough mixed in a ratio of about 10% to about 200% of the weight of the soil and then pour the desired thickness to the site.
  • a low pH acidic aqueous solution (pH up to about 5) or a cationic aqueous solution can be sprayed onto the surface to induce penetration to enhance the gel structure of the viscous gelled biopolymer in the mixed soil.
  • a high pressure spraying polymer viscous gelled polysaccharide suspension or aqueous solution (pH about 6 to about 13) at a concentration of about 0.00001% to about 10% is applied to slopes (surfaces, etc.) that are difficult to surface-treat by spraying or premixing. It is a method of forming a soil-biopolymer mixed soil coating on slopes by promoting disturbance of slope soils and simultaneously penetration of biopolymers. After sparging, a low pH acidic aqueous solution (pH up to about 5) or a cationic aqueous solution may be sprayed on the surface to strengthen the gel structure of the viscous gelled biopolymer in the mixed soil coating.
  • a pressure to grout the polymer viscous gelled polysaccharide suspension or aqueous solution (pH about 6 to about 13) to the ground at a high pressure of about 0.00001% to about 10%
  • an additional low pH acidic aqueous solution (pH of about 5 or less) or a cationic aqueous solution may be further injected to strengthen the gel structure of the viscous gelled biopolymer of the soil-biopolymer mixed soil in the soil.
  • the soil-biopolymer mixed surface layer is prepared after compaction to improve adhesion to the original layer of the soil-biopolymer mixed soil, as well as to increase the density of the soil-biopolymer mixed soil, thereby improving rigidity and durability. Can be.
  • Polymeric viscous chain polysaccharide biopolymers are generally polymers having a molecular weight of about 10,000 Da or more, and the fibers are entangled with each other in a neutral or acidic suspension (pH of about 7 or less) or in an aqueous solution to show high viscosity.
  • the viscous chain-type polysaccharides having a negative charge on the surface has a characteristic of increasing viscosity as the pH is lowered.
  • Polymeric viscous chain polysaccharide biopolymers on the other hand, swell due to high hydrophilicity and become very viscous suspensions or aqueous solutions.
  • the present application proposes the following methods.
  • Increasing the pH of the polymer viscous chain or gelled polysaccharide suspension or aqueous solution at a concentration of about 0.00001% to about 10% results in a lower viscosity.
  • Injecting low-viscosity biopolymer suspensions or aqueous solutions into the ground by spraying or pressure can improve penetration or diffusion into the ground.
  • a bead mill or the like can be used to lower the viscosity of the polymer viscous chain polysaccharide biopolymer solution, and the tangled polysaccharide chains can be released by stirring the solution using the beads at a rate of about 10,000 ppm or more.
  • polymer viscous chain polysaccharide biopolymer solution may be collided at high pressure (about 150 bar or more) to release physically entangled polysaccharide chains.
  • Polycan TM a chain polysaccharide biopolymer solution, has a viscosity of about 1,000 cps, and when it is collided with a homogenizer at 200 bar, the viscosity decreases to about 30 cps, and the liquid of about 30 cps is again returned. Collision reduces the viscosity to about 16 cps.
  • Viscous properties in soil-biopolymer mixed soils by mixing or injecting a physically low-viscosity polymer viscous chain polysaccharide biopolymer with soil, followed by additional spraying or injection of a low pH acidic aqueous solution (pH below 5) or a cationic aqueous solution Aggregation between chained biopolymers can be enhanced.
  • a physically low-viscosity polymer viscous chain polysaccharide biopolymer with soil, followed by additional spraying or injection of a low pH acidic aqueous solution (pH below 5) or a cationic aqueous solution
  • Aggregation between chained biopolymers can be enhanced.
  • the biopolymer may be added to the soil in various ways for various purposes in various target areas as follows, but may not be limited thereto:
  • biopolymer suspension By spraying the biopolymer suspension directly onto the surface, it can be easily applied to slopes or slopes as well as flat, diluting solid or liquid biopolymers in certain proportions, and pumps, transfer tubes and nozzles. It sprays by using, and it is a method of forming a coating
  • This method has the advantage of forming a homogeneous coating on the site, and through the compaction to increase the adhesion to the base.
  • the method consists of a device for diluting solid and liquid biopolymers at a certain rate and laying them at the same time, and a compaction device for spreading and laying of soil.
  • the compaction device can be either roller or vibratory.
  • This method can improve the coating power of the coating surface in parallel with 1-1. This method is useful when a large amount of on-site soil is available on site.
  • This method is applicable when the surface soil is dried, such as a dry area, is a method of dry mixing the dry soil and the powdered biopolymer in the field immediately after spraying water to form a coating.
  • biopolymer treatment technology can be used very effectively for suppressing soil loss of cropland and stockland.
  • plowing When plowing cropland before sowing, plowing is performed with biopolymer powder or suspension.
  • pre-sowing cropland has a hard surface, so spraying a biopolymer suspension in advance can improve the working efficiency of the plowing, and can also increase the resistance to erosion of the whole cropland as the topsoil and the biopolymer are evenly mixed. .
  • a method may be proposed in which a direct injection nozzle is attached to the head of the plow to plow and at the same time a biopolymer suspension is supplied from the tip to enhance local efficiency.
  • Waterside spaces are adjacent to water, so there is always a possibility of water erosion. Therefore, the improvement of the soil using biopolymers in the construction of waterside space is expected to reduce the overall soil loss.
  • Biopolymer treatment enhances the germination and growth of vegetation, so it can be applied to the field in various forms.
  • the method of spraying the biopolymer suspension at high pressure can be easily applied not only to flat lands but also to inclined slopes or slopes, and dilutes the solid or liquid biopolymer at a predetermined ratio, and optionally mixes additives homogeneously. It consists of a mixing tank, a high pressure pump suitable for the high viscosity characteristics of the biopolymer suspension, a delivery tube system, and a special nozzle which can effectively spray the biopolymer mixture (FIG. 13). Special nozzles must meet the conditions for spraying fine particles, such as vegetation seeds.
  • This method has the advantage of forming a homogeneous coating on the site, and through the compaction to increase the adhesion to the base.
  • the method consists of a device for diluting a solid or liquid biopolymer in a proportion and diluting with soil and other additives at the same time, and a compaction device for unfolding the installed soil (FIG. 14).
  • the compaction device can be either roller or vibratory.
  • This method can improve the coating power of the coating surface in parallel with Method 5-1. This method is useful when a large amount of on-site soil is available on site.
  • This method is sprayed by dry spraying method using dual transfer system without pre-mixing, and mixed with liquid biopolymer, soil and other additives, and then attached to the ground. Use it to maximize the effect.
  • the core of the method is the dual transport of the spreading material, the wet transport system transports and spreads the liquid biopolymer suspension, and the dry transport system transports and sprays dry soil and other additives, thereby clogging in the transfer pipe. Its purpose is to reduce construction problems and to maximize the efficiency of field work.
  • the system of the method includes a mixing tank for largely forming a biopolymer suspension in a liquid state, a high pressure pump and conveying tube system suitable for the high viscosity characteristics of the biopolymer suspension, a mixing tank for uniformly mixing solid soil and other additives, and a high pressure. It consists of a dual-nozzle capable of independently injecting a solids pump and a delivery tube system, a liquid biopolymer and a solid soil and other additives that can be transferred to the furnace (FIG. 15).
  • Method 3 and 4 according to an embodiment of the present application it is confirmed that the treatment of the polymer viscous polysaccharide biopolymer is effective in promoting germination and growth of vegetation. Therefore, the present application proposes an environment-friendly landscape composition method using a biopolymer that does not depend on the existing chemical fertilizer.
  • rapeseed After forming a polymer viscous polysaccharide biopolymer coating layer on the surface layer, the seeds are directly sprayed or a vegetation mat is installed. After seeding, the seed is left without post treatment or a toffee of a certain thickness is formed to protect the seed from the external environment and to induce the germination of the seed.
  • a biopolymer coating layer is formed on the surface, and then the seeds are directly sprayed or a vegetation mat is applied. After sowing the seeds, they can be left without post-treatment or additional coatings of a certain thickness can be used to protect the seeds from the external environment and to promote germination.
  • Biopolymers are environmentally friendly and biodegradable over time, resulting in extremely low water and water ecosystem disturbances when applied to the waterfront compared to conventional cement or chemical materials. Active utilization in the furtherance is expected.
  • the general shape of the river and waterside space is shown in FIG. It is usually divided into a bank (B), a ciliary site (C) inside the bank, and a periphery (A) outside the bank to prevent flooding.
  • B bank
  • C ciliary site
  • A periphery
  • the present invention performs the following implementation method for each space.
  • Soil stabilization and improvement methods using biopolymers according to the present application can be applied as an environmentally friendly soil reinforcement method using biopolymers in surrounding grounds to suppress back erosion due to river dredging and water level change.
  • the soil stabilization and improvement method using the biopolymer according to the present application can be applied as a dike and revetment method using the biopolymer mixture soil.
  • the soil stabilization and improvement method according to the present application may be applied as a bank surface coating method using a biopolymer in order to suppress the water penetration into the bank in the high water level or flood level.
  • the soil stabilization and remediation method according to the present application can be applied as a method for improving the soil erosion resistance using biopolymers to suppress irregular soil erosion such as partial erosion of the inflow portion or gully on the flat land. have.
  • an environment-friendly vegetation-promoting soil composition and / or a composition for preventing soil erosion can be prepared.
  • the vegetation enhancement method according to the present application by using an eco-friendly and beneficial to the human body, by improving the structure and water conditions of the soil through the interaction between the soil and the biopolymer, as well as to improve the resistance to erosion, Enhance the vegetation and stabilize the vegetation (sufficient rooting).
  • the second aspect of the present application provides a soil composition for promoting germination or growth of vegetation, which is prepared by the method of stabilizing and improving the soil of the first aspect of the present application, and which comprises a polymer viscous biopolymer.
  • about 100 parts by weight of soil may include about 20 parts by weight or less of the polymer viscous biopolymer, but may not be limited thereto.
  • the polymer viscous biopolymer may be used in an amount of about 0.00001 parts by weight to about 15 parts by weight, about 0.00001 parts by weight to about 10 parts by weight, about 0.00001 parts by weight to about 5 parts by weight, based on about 100 parts by weight of soil.
  • the third aspect of the present application is prepared by the method of stabilizing and improving the soil of the first aspect of the present application, and provides a composition for preventing soil erosion, comprising a polymer viscous biopolymer.
  • about 100 parts by weight of soil may include about 20 parts by weight or less, but may not be limited thereto.
  • the polymer viscous biopolymer may be used in an amount of about 0.00001 parts by weight to about 15 parts by weight, about 0.00001 parts by weight to about 10 parts by weight, about 0.00001 parts by weight to about 5 parts by weight, based on about 100 parts by weight of soil.
  • a fourth aspect of the present application provides an earth building material or member, prepared by the soil stabilization and improvement method of the first aspect of the present application, and comprising a polymer viscous biopolymer.
  • the strength and durability enhancement effect of the soil using the biopolymer according to the present application can be utilized in the field of construction and building materials using the soil.
  • biopolymer blending ensures higher strength and durability than soil-based soil construction (walls or columns, etc.), and biodegradation of organic materials (compared with traditional methods of straw, etc.). It is possible to overcome the problem of functional degradation due to degradation, and it is possible to construct a highly environmentally friendly building construction compared to the method using chemical additives (gypsum, cement, etc.).
  • the soil building material and member may include, for example, a wall, a floor, a brick, a block, a board, a panel, and the like, but may not be limited thereto.
  • the member means a construction subsidiary material.
  • the soil construction is a form of mixing the natural soil with water to secure workability, and then molded into a brick or block form, or directly applied to the wall or floor.
  • a method of adding fibers such as straw or mixing chemical additives is used.
  • Soil wall construction method using the biopolymer according to the present application is different from the existing method.
  • the soil may be selected from the group consisting of fine (clay), coarse (sand), and combinations thereof, but may not be limited thereto.
  • about 100 parts by weight of soil may include about 20 parts by weight or less, but may not be limited thereto.
  • the polymer viscous biopolymer may be used in an amount of about 0.00001 parts by weight to about 15 parts by weight, about 0.00001 parts by weight to about 10 parts by weight, about 0.00001 parts by weight to about 5 parts by weight, based on about 100 parts by weight of soil.
  • a beta-1,3 / 1,6-glucan-based liquid product (8.9 g / L beta glucan content; glucan) was used as the polymer chain biopolymer material.
  • xanthan gum (Sigma-Aldrich; CAS 1138-66-2) in a pure powder state, which is widely used as a food curing agent, was applied to this example.
  • Xanthan gum's greatest feature is its stability at various temperature and pH conditions.
  • the basic method for carrying out the invention was to measure the soil loss amount in each case by mixing the soil with the biopolymer and reproducing rainfall conditions, to evaluate the resistance to the soil erosion in general. Details are as follows.
  • a granite residue (ocher) which is a main component of Halloysite: Al 2 Si 2 O 5 (OH) 4 , which is a representative soil of Korea, was used as a representative soil sample. After the natural drying, the clay was ground to a size of 0.07 mm to 0.15 mm, and then dried at 110 ° C. to remove residual organic matter.
  • A 1,200 g (60% by weight of soil)
  • B 1,200 g of liquid beta-1 10 g of powdered xanthan gum and 1,200 g of distilled water were uniformly mixed with soil in, 3 / 1,6-glucan (0.5% beta glucan to soil weight ratio) and C, respectively.
  • a watering machine as shown in FIG. 2 was used, and the angle of the sample plate was set to 20 ° C.
  • the total weight of the sample plate was measured before rainfall simulation, and the volume and mass were measured by collecting the outflow slurry after 500 mL of rainfall simulation. After rainfall simulation, the total weight of the sample plate was measured to calculate the amount of soil absorption.
  • the outflow slurry was dried immediately to derive soil erosion based on the mass difference before and after drying. Rainfall simulation was carried out in a two-day cycle for a total of 10 times.
  • Table 2 shows the results of converting the soil loss by the number of rainfall in Table 1 to the cumulative loss rate (%) relative to the initial total soil weight (2,000 g).
  • the biopolymer-treated soil had a cumulative loss rate of 0% to 1% for a total of 10 rainfall simulations, while the soil without any treatment was found to lose 21% of soil.
  • beta-1,3 / 1,6-glucan had a cumulative loss rate of only 0.1%, indicating that resistance to erosion was significantly higher.
  • samples of the same conditions in the same condition of the specific content for the practice of the present invention were prepared and then simulated the concentrated rainfall.
  • 500 mL of rainfall was sprinkled 15 times at 10 minute intervals, and the total sample weight and soil loss before and after the rainfall were measured as above.
  • the basic method for carrying out the invention is to mix the soil with the corresponding biopolymer, sowing crops and cultivating under constant temperature and humidity conditions to check the germination and growth of seeds, further analyzing the structure of the soil and how the biopolymer treated soil is planted. It was confirmed whether it affects the growth of. Details are as follows.
  • a granite residue (ocher) which is a main component of Halloysite: Al 2 Si 2 O 5 (OH) 4 , which is a representative soil of Korea, was used as a representative soil sample. After the natural drying, the clay was ground to a size of 0.07 mm to 0.15 mm, and then dried at 110 ° C. to remove residual organic matter.
  • FIG. 5a shows that the ocher particles and the vegetation roots are densely attached as a result of the ocher not treated at all.
  • beta glucan treated ocher of Figure 5b it is determined that the polymer beta glucan chains have an effect of improving the air permeability and moisture permeability of the soil as a whole by expanding the pores in the soil.
  • xanthan gum treated soil FIG. 5C
  • the overall soil structure is denser than that of the beta glucan treated soil of FIG. 5B, but due to gelation, the soil particles form agglomerates, resulting in a looser structure than the untreated soil of FIG. 5A. Visibility is observed. Therefore, it could be confirmed that the biopolymer treatment broadens the pores of the soil to create an environment in which the roots of the vegetation can grow well.
  • Example 3 Polymer Viscous Gelled Polysaccharide Biopolymer-Soil Mixing Using Heat Treatment
  • an aqueous solution of the polymer viscous gelled polysaccharide biopolymer and soil at high temperature were prepared.
  • the powdered biopolymer was dissolved in a solvent (water) at a high temperature (80 ° C.), and then mixed with the heated soil to prevent premature gelation due to rapid temperature drop during mixing.
  • An important point in forming a high temperature aqueous solution of biopolymer is that the concentration of the biopolymer (solvent-to-solvent) must be properly adjusted.
  • agar absorbs water equivalent to 20 times its mass due to hydrophilic at room temperature, and its solubility increases with increasing temperature. It is desirable to formulate high temperature solutions up to 10% (10 g / 100 mL) for agar and up to 3% (3 g / 100 mL) for gellan gum, because further powders are not completely soluble in water. Because it does not.
  • the high temperature gelled biopolymer solution was uniformly mixed with high temperature soil, and mixed with soil such as ocher (viscosity soil type) at 60% (solution weight to soil weight) or less, and sand soil at 30% or less. After mixing, it can be molded to the desired purpose and then cured in air or in quartz. The summary of this process is as shown in FIG.
  • Figure 11 shows a conceptual diagram of a method for manufacturing environmentally friendly soil building material using a thermal gelling biopolymer according to an embodiment of the present application.
  • a thermal gelling biopolymer according to an embodiment of the present application.
  • thermal gelling is characterized by low viscosity at temperatures above 80 ° C and the formation of highly viscous Gel-matrices when cooled below 40 ° C. It is important not to lose high temperatures until.
  • the soil and the aqueous solution of biopolymers are respectively heated and mixed at a specific temperature (for example, 80 ° C.) or higher, and the biopolymer-soil mixture thus formed is poured into a molding mold, and then cooled.
  • a specific temperature for example, 80 ° C.
  • the biopolymer-soil mixture thus formed is poured into a molding mold, and then cooled.
  • Various shapes can be realized according to the mold. After being poured into the mold, it is hardened while cooling to 40 ° C. or lower. In this case, it is hardened by natural cooling in air or by metal cooling using water or other refrigerant.
  • the thermal gelled biopolymer according to the present embodiment the water permeability is very low, so it was confirmed that the soil structure is not disturbed even when soaked in water initially. I can make it.
  • the biopolymer-soil composition presented in the present invention can be confirmed to have excellent durability against water. Therefore, the present technology can be applied in the form of injecting or stirring a high temperature biopolymer solution directly into the ground for the purpose of ordering and shielding the ground or other reinforcement.
  • the specific implementation method is the same as FIG.
  • the flexural strength was less than 100 kPa in the dry state of the soil which had not been treated, and the polymer viscous biopolymer according to the present embodiment was not shown, even when the gypsum 10% was mixed.
  • the mixed specimens showed a marked increase in flexural strength.
  • the strength of about 200 kPa is shown, and when it is included in the 1% weight ratio, it has been confirmed that the bending strength is close to 400 kPa.
  • the soil construction and the construction using the polymer viscous biopolymer The use of materials is considered to be a good alternative to overcome the low strength and low durability problems of conventional soil construction.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Cultivation Of Plants (AREA)
PCT/KR2013/006906 2012-10-09 2013-07-31 Procédé de stabilisation et d'amélioration de sol utilisant un biopolymère Ceased WO2014058145A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/434,188 US9944855B2 (en) 2012-10-09 2013-07-31 Soil stabilization and improvement method using biopolymer
CN201380064168.2A CN105143400A (zh) 2012-10-09 2013-07-31 使用生物聚合物的土壤稳定和改良方法

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR20120112059 2012-10-09
KR20120112060 2012-10-09
KR10-2012-0112059 2012-10-09
KR10-2012-0112060 2012-10-09
KR1020130090883A KR101551920B1 (ko) 2012-10-09 2013-07-31 바이오폴리머를 이용한 식생의 발아 또는 생장 증진 방법
KR1020130090894A KR101544145B1 (ko) 2012-10-09 2013-07-31 바이오폴리머를 이용한 흙 침식 저항 증진 방법
KR10-2013-0090883 2013-07-31
KR10-2013-0090894 2013-07-31

Publications (1)

Publication Number Publication Date
WO2014058145A1 true WO2014058145A1 (fr) 2014-04-17

Family

ID=50477580

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/006906 Ceased WO2014058145A1 (fr) 2012-10-09 2013-07-31 Procédé de stabilisation et d'amélioration de sol utilisant un biopolymère

Country Status (1)

Country Link
WO (1) WO2014058145A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105061068A (zh) * 2015-08-18 2015-11-18 山东中瀚生物科技有限公司 一种辣木多糖富集生物液体肥料及其制备方法
CN105350414A (zh) * 2015-09-24 2016-02-24 北京林业大学 一种利于植被恢复的荒漠公路施工方法
CN108059573A (zh) * 2018-01-26 2018-05-22 四川省农业科学院植物保护研究所 一种用于提高韭菜产量的肥料及其制备方法及应用
CN113533084A (zh) * 2021-06-02 2021-10-22 河海大学 一种基于生物聚合物增强客土生态特性的方法及评价方法
CN113735658A (zh) * 2021-07-30 2021-12-03 中国科学院重庆绿色智能技术研究院 一种用于沙土生态改良及修复的绿色复合材料及其制备方法和应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10513491A (ja) * 1995-02-01 1998-12-22 ケイビー テクノロジーズ リミティッド ポリマー土壌支持流動体組成物及びそれらの使用方法
US20090242833A1 (en) * 2008-03-31 2009-10-01 Rhodia Inc. Self-situating stimuli-responsive polymer compositions in soil additives and methods for use
JP2010275697A (ja) * 2009-05-26 2010-12-09 Taisei Corp 土壌安定化工法
US20110113983A1 (en) * 2009-11-16 2011-05-19 Chemstar Products Company Soil stabilization compositions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10513491A (ja) * 1995-02-01 1998-12-22 ケイビー テクノロジーズ リミティッド ポリマー土壌支持流動体組成物及びそれらの使用方法
US20090242833A1 (en) * 2008-03-31 2009-10-01 Rhodia Inc. Self-situating stimuli-responsive polymer compositions in soil additives and methods for use
JP2010275697A (ja) * 2009-05-26 2010-12-09 Taisei Corp 土壌安定化工法
US20110113983A1 (en) * 2009-11-16 2011-05-19 Chemstar Products Company Soil stabilization compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NORTON, SYLVAIN ET AL.: "Gellan gum gel as entrapment matrix for high temperature fermentation processes: a rheological study.", BIOTECHNOLOGY TECHNIQUES, vol. 4, no. 5, 1990, pages 351 - 356 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105061068A (zh) * 2015-08-18 2015-11-18 山东中瀚生物科技有限公司 一种辣木多糖富集生物液体肥料及其制备方法
CN105061068B (zh) * 2015-08-18 2018-08-03 河北大广生物科技有限公司 一种辣木多糖富集生物液体肥料及其制备方法
CN105350414A (zh) * 2015-09-24 2016-02-24 北京林业大学 一种利于植被恢复的荒漠公路施工方法
CN108059573A (zh) * 2018-01-26 2018-05-22 四川省农业科学院植物保护研究所 一种用于提高韭菜产量的肥料及其制备方法及应用
CN113533084A (zh) * 2021-06-02 2021-10-22 河海大学 一种基于生物聚合物增强客土生态特性的方法及评价方法
CN113735658A (zh) * 2021-07-30 2021-12-03 中国科学院重庆绿色智能技术研究院 一种用于沙土生态改良及修复的绿色复合材料及其制备方法和应用

Similar Documents

Publication Publication Date Title
WO2014058145A1 (fr) Procédé de stabilisation et d'amélioration de sol utilisant un biopolymère
CN102229485B (zh) 基于疏浚底泥的植生性基质及裸露坡面的生态修复方法
Xu et al. Characteristics and applications of ecological soil substrate for rocky slope vegetation in cold and high-altitude areas
CN101747902B (zh) 以工业废弃物为主原料的绿色环保土壤固化剂及其使用方法
US20060128839A1 (en) Process for the stabilization of dusting surfaces
US9944855B2 (en) Soil stabilization and improvement method using biopolymer
CN100577601C (zh) 干粉界面处理剂
CN102031786A (zh) 绿化植被混凝土及其施工方法
CN102409637A (zh) 一种消落带的生态修复方法
CN103510488A (zh) 一种抗冻型生态护坡基材
CN115997642A (zh) 一种用于岩质边坡生态修复的客土喷播基材及其制备方法
CN110036832A (zh) 一种青藏高原矿采遗迹地植被恢复的方法
Zhang et al. A cross-linked polymer soil stabilizer for hillslope conservation on the loess plateau
KR20010074064A (ko) 플라이애시, 실리카흄 및 재생골재를 이용한 식생용포러스콘크리트의 제조방법
HU228652B1 (en) Process for improving the engineering properties of soil
KR101544145B1 (ko) 바이오폴리머를 이용한 흙 침식 저항 증진 방법
CN109628097A (zh) 一种生态环境固沙材料及其制备方法
CN108457241A (zh) 一种盐碱地人工湖生态型防水减渗的方法
CN114687366B (zh) 一种利用工业废弃物协同黄豆脲酶加固边坡的方法
CN100393948C (zh) 防冲刷基材生态护坡方法
CN101400760B (zh) 无机、静电粘结剂组合物，其应用以及制备所述粘结剂组合物的方法
ITMI950686A1 (it) Impasto semifluido e relativo procedimento per il recupero ambientale
Yongxiang et al. An experimental study of the ecological restoration of rock slope based on polyurethane composite-based materials
KR102237837B1 (ko) 바이오폴리머-함유 젤 바 및 이를 이용하는 토양의 침식 저항 증진 시공 방법
JP2009121173A (ja) 地面被覆工及び地面被覆工法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201380064168.2

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13845154

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14434188

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13845154

Country of ref document: EP

Kind code of ref document: A1