JPH07173468A - Method of producing composition for preventing erosion and flowout of red earth and method of laying same - Google Patents

Abstract

PURPOSE:To provide a composition excellent in an effect of preventing the flowout of red earth into a sea by e.g. rainfall by mixing an aqueous solution of a specified polymer compound with a specified latex and a specified emulsion. CONSTITUTION:An aqueous solution of a compound of formula I is mixed with a latex of formula II and an emulsion of formula III to produce this composition. This composition is sprayed over the surface of red earth or mixed with the earth by means of a stabilizer to convert the earth into water-resistant crumbles. A combination of a compound of formula I with a latex of formula II, a combination of a compound of formula I with an emulsion or formula III and a combination of a latex of formula II with an emulsion of formula III are also effective. The obtained composition is inexpensive, readily soluble in water at ordinary temperature, has high adsorptivity for inorganic matter, is a typical hydrophilic colloid, has viscosity characteristic of a polymer in the form of an aqueous solution and has a function of quickly flocculating soil to prevent its flowout.

Description

Detailed Description of the Invention To produce a composition, put the composition in a tank equipped with a stabilizer and spray or raise the soil surface and the liquid with the progress of the stabilizer, and spray the liquid on the soil surface with a mixing agitator or a sprayer, The aggregates are made water resistant to prevent erosion and runoff due to rainfall. That is, the composition according to the present invention is less expensive than other soil conditioners and 1) it is easily soluble in water at room temperature 2) it has a strong inorganic adsorption property 3) it is a typical hydrophilic colloid 4) Since it has the essential properties for soil improvement, such as having a polymer-specific viscosity in the state of aqueous solution, it is possible to use the above composition for soil aggregation as an aqueous solution on the ground surface as much as possible. If applied evenly, the above composition will quickly permeate and diffuse into the surface and inside of the soil, and at the same time easily and quickly aggregate the soil by the action of its inherent inorganic adsorption force and viscosity, and once it is formed like this. The agglomerated aggregates have the property that the above-mentioned composition adsorbed inside thereof exerts its properties as a hydrophilic colloid, and can always hold an appropriate amount of water that is indispensable for stable aggregated granules in addition to soil. There are suction force strength to particle. As a result, it does not flow out due to rainwater or the like, and thus the produced aggregate can be maintained as it is for a long period of time. Especially, once the aggregate is formed, it does not collapse and lasts for a long time. This is one of the main characteristics of using an aqueous solution as a soil additive. When applied with red soil, its effect lasts for several years. Then, an adhesive force is applied between the aggregated red soil and the finely divided colloids to bond them in a sheet form to prevent runoff by rainwater. or By adding this, the action image is strengthened and the red soil is covered like a mesh against external pressure due to wind, etc., and it is also possible to prevent outflow from wind and rain. In this way, the three different effects can completely prevent erosion and outflow of red soil from rainfall or the like. Others 5) Corrosion resistance 6) Being completely harmless to living organisms 7) Being neither neutral nor acidic or alkaline in the form of this solution, there is no possibility of adversely affecting the soil. There is a property. Also used in the present invention Among the products produced by the usual publicly known methods, those which are not regulated to complete saponification or partial saponification but are so-called sesame bottoms are waste products or nonstandard products which are inexpensive as a manufacturer. However, in terms of physical properties, some of them are characterized in that an acetic acid group remains and can be sufficiently used in the present invention. or The dispersion structure of latex particles in water is as shown in the above figure, and the rubber hydrocarbon particles in the rubber latex are separated from the non-polar hydrophobic substance by the difference in specific gravity because they are not well compatible with the water in the latex. A protective film (protective colloid) of the protein adsorbed on the surface of the rubber particles is necessary and effective in order to prevent it and to make active Brownian motion. When the surface of the rubber is in contact with the C matrix of the protein to be adsorbed and the C matrix of the rubber, the end of the carboxyl group is COOH toward the outside.
And the amino group NH ₂ group is arranged like a chestnut moth. Then, negative power transmission is sent from H ₂ O in the water filling liquid to be sucked with H ₂ . It produces a protective colloidal effect by forming a hydrated layer surrounding the rubber particles. The hydration layer is a phenomenon in which a solute molecule or ion in a solution attracts and binds several water molecules to form one molecular group. This has a function of retaining the water in the soil for a long term by the above phenomenon. Example Using the above composition, an experiment was conducted in Kyoda, Nago City, Okinawa Prefecture, in an experimental park of practical examples. Many soils in the Okinawa region are red-yellow soils, and these soils have physical characteristics that are susceptible to soil erosion and runoff due to rainfall. The rivers are dense and the rivers are steep and short. Furthermore, the energy of rainfall, which is an active factor of erosion, is high. Therefore, the potential is high when the land composition is exposed to the destruction by land modification in this area. As a result, land erosion due to rainfall occurs, and the runoff carries red earth and sand, which flows down and pollutes the river and sea, causing the deterioration of the basin environment. East Okinawa Red Loess Soil analysis a) Soil classification Cohesive soil or clay b) Soil test (soil) Consistency Classification of soil Properties of soil a. Test contents (1) Cone penetration test according to changes in water content Uniform axial compression test In order to know the toafability of the soil, the water content is changed in the same soil and the test is conducted. 1) Cone penetration test setting water content 10% 15% 20% 22% 2
4% 25% 26% 28% 30% 32% 2) Tightening 15 molds 56 times 3 layers (according to KODAN 110-1995) 3) Curing Immediately after tamping 4) Test method 2.5 cm and The average value after 5 cm penetration is measured at 4 points with a single specimen, and the cone index is calculated from the following formula based on the average value. Example Experiment site explanation (A section) Rolling compaction method depth by the road mixing method by the stabilizer Thickness 10 cm Drug spraying amount 6.2 / cm ² Rolling pressure 2.5t Tire roller (B section) Coating method chemical spraying amount by sprayer 3. 2 / cm ² (C section) Road mixing and rolling method Simple road mixing Road mixing + rolling method (A section) Rolling method depth by road mixing method Thickness 10 cm Chemical spraying amount 6.2 l / m ² Rolling pressure 2.5 t Tire roller (B section) Covering method Chemical spraying amount 3.2 l / m ² (C Section) Road mixing and rolling method Simple road mixing Road mixing and rolling method Results of the above test Typhoon (100 mm / h, 25 mm / h)
q After 2 times of experience, no outflow of red loess was observed. 9m The purpose of this drug can be sufficiently evaluated.

Claims (1)

[Claims] The present invention relates to a method for manufacturing and applying a composition, characterized in that a composition obtained by adding and mixing an emulsion is sprayed on the surface of red soil soil or mixed on the road by a stabilizer to prevent erosion and outflow of red soil soil. The combination of is included in the claims.