Loess concrete composition comprising composite of loess and polymer and livestock manure cellulose, and loess concrete manufactured therefrom

Abstract

The present invention relates to a loess concrete composition comprising: a first agent containing a loess / polymer composite and an EVA emulsion; and a second agent containing aggregate, cement, an admixture, and livestock manure cellulose. The present invention improves compatibility with concrete compositions, such as cement, while using loess, which is an environmentally friendly material, thereby producing a loess concrete composition having excellent dispersibility, workability, and storage stability of loess to thus provide loess concrete having excellent mechanical properties. In addition, the present invention uses, as a reinforcing material, livestock manure cellulose, which is an environmentally friendly cellulose that can replace conventional plastic fibers, thereby enabling livestock manure, which has previously been simply recycled as compost and has limited uses, to be utilized as a component of the loess concrete of the present invention, thus addressing environmental problems and creating added value.

Description

A yellow clay concrete composition containing a complex of yellow clay and polymer and cellulose, and a yellow clay concrete manufactured therefrom

[0001] The present invention relates to an environmentally friendly yellow clay concrete composition comprising a composite of yellow clay and polymer and cellulose, and yellow clay concrete manufactured therefrom.

[0002] Concrete, an indispensable material in human architectural culture, is a mixture of aggregate, sand, and cement in a specific proportion, making it an indispensable material in construction and civil engineering. While cement's use in modern architecture has increased productivity, concrete buildings lack ventilation and emit toxic, irritating odors, degrading indoor air quality. For modern people, this toxicity of cement is a serious problem, and reducing its use has become an urgent issue.

[0003] Due to this, the recent global trend of eco-friendly industries has also influenced the construction industry, and research on concrete compositions using environmentally friendly and harmless materials such as yellow clay has been steadily ongoing to replace cement or reduce its usage. Using yellow clay in the walls and floors of buildings prevents the harmful effects of cement, and the far-infrared rays and negative ions generated by yellow clay can help prevent aging, promote blood circulation, relieve stress, beautify skin, and relieve neuralgia, back pain, and chronic fatigue. It also has antibacterial, deodorizing, and moisture-regulating properties, making it an eco-friendly material used in various fields. Furthermore, its excellent adsorption properties eliminate odors, and its superior antibacterial properties inhibit the growth of mold and other bacteria, providing a pleasant living space for our homes.

[0004] However, if such yellow clay is used as is, the compatibility and bonding strength with other concrete compositions are poor and it does not blend well, so the concrete is easily cracked, damaged, or scratched. In particular, in winter, the strength properties are reduced due to the difference in outside temperature, causing the yellow clay concrete to be severely damaged, reducing its durability. In particular, if yellow clay is used without cement at all, there is a problem that it is difficult to secure initial strength and molding is difficult due to the weak viscosity of the yellow clay itself. In addition, when yellow clay is used together with cement, there is a problem that the adhesion and density with the cement are insufficient.

[0005] Therefore, it is necessary to develop loess concrete that has the functions of loess while also taking into account the special characteristics of loess to enable chemical fusion and improve compatibility with concrete compositions such as cement, thereby having excellent dispersibility, workability, storage stability, and mechanical properties.

[0006] In order to solve the above problems, the present invention aims to provide a loess concrete composition having excellent dispersibility, workability and storage stability of loess by using loess, an environmentally friendly material, while improving compatibility with concrete compositions such as cement.

[0007] In addition, the purpose is to provide yellow clay concrete having excellent mechanical properties from the above yellow clay concrete composition.

[0008] However, the above purpose is exemplary, and the technical idea of ​​the present invention is not limited thereto.

[0009] One aspect of the present invention for achieving the above object relates to a yellow clay concrete composition comprising: a first agent containing a complex of yellow clay and a polymer and ethylene vinyl acetate (EVA); and a second agent containing aggregate, cement, an admixture, and cellulose slurry.

[0010] In the above aspect, the composite of yellow soil and polymer may include yellow soil, polyammonium salt, and polyacrylate.

[0011] In the above aspect, the polyammonium salt may be included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the yellow soil.

[0012] In the above aspect, the polyammonium salt may have a weight average molecular weight of 50,000 to 100,000 g / mol.

[0013] In the above aspect, the first agent may have a solid content of 20 to 30 wt%.

[0014] In the above aspect, the polyacrylate may be included in an amount of 1 to 6 parts by weight based on 100 parts by weight of the yellow soil.

[0015] In the above aspect, the polyacrylic acid salt may have a weight average molecular weight of 5,000 to 10,000 g / mol.

[0016] In the above aspect, the ethylene vinyl acetate (EVA) may be an emulsion having a viscosity of 500 to 1000 cp.

[0017] In the above aspect, the ethylene vinyl acetate (EVA) may be included in an amount of 3 to 10 parts by weight relative to 100 parts by weight of the composite of yellow soil and polymer.

[0018] In the above aspect, the aggregate may be included in an amount of 70 to 120 parts by weight based on 100 parts by weight of the composite of yellow soil and polymer.

[0019] In the above aspect, the cement may be included in an amount of 30 to 35 parts by weight based on 100 parts by weight of the composite of yellow soil and polymer.

[0020] In the above aspect, the admixture may be included in an amount of 0.5 to 1.5 parts by weight relative to 100 parts by weight of the composite of yellow soil and polymer.

[0021] In the above aspect, the cellulose may be included in an amount of 0.2 to 2 parts by weight based on 100 parts by weight of the composite of yellow soil and polymer.

[0022] In the above aspect, the second agent may have a solid content of 30 to 60 wt%.

[0023] In addition, another aspect of the present invention relates to a method for producing a yellow clay concrete composition, comprising the steps of: preparing a first agent by mixing a complex of yellow clay and a polymer and an EVA emulsion; and preparing a second agent including aggregate, cement, an admixture, and cellulose slurry.

[0024] In another aspect of the present invention, the composite of yellow clay and a polymer may be characterized by comprising the steps of adding a polyammonium salt to a suspension having a yellow clay solid content of 20 to 25 wt% and stirring the suspension; and adding a polyacrylate to the swollen dispersion by adding the polyammonium salt and stirring the suspension to produce a composite of yellow clay and a polymer.

[0025] In addition, another aspect of the present invention relates to yellow clay concrete characterized in that it is hardened by mixing the first agent and the second agent according to the above yellow clay concrete composition manufacturing method.

[0026] The present invention provides a loess concrete composition comprising a loess-polymer composite and cellulose powder, which uses loess, an environmentally friendly material, while improving compatibility with concrete compositions such as cement, thereby providing a loess concrete composition having excellent dispersibility, workability, storage stability, and mechanical properties. In addition, the present invention provides a method for producing a loess concrete composition, which comprises the steps of producing a first agent containing a loess-polymer composite and ethylene vinyl acetate (EVA); and the steps of producing a second agent containing aggregate, cement, an admixture, and cellulose powder.

[0027] In addition, by using livestock manure cellulose, an eco-friendly cellulose that can replace conventional plastic fibers, as a reinforcing material, livestock manure, which was previously recycled as simple compost and had limited uses, can be used in the concrete composition of the present invention, thereby solving environmental problems and creating added value.

[0028] FIG. 1 is a process flow diagram for manufacturing yellow clay concrete by manufacturing a yellow clay concrete composition including a composite of yellow clay and polymer according to an example of the present invention.

[0029]

[0030] Hereinafter, an environmentally friendly yellow clay concrete composition including a yellow clay and polymer composite and livestock cellulose according to the present invention, and yellow clay concrete manufactured therefrom, will be described in detail. The drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms, and the drawings presented below may be illustrated in an exaggerated manner to clarify the spirit of the present invention. In this case, unless otherwise defined, the technical and scientific terms used have the meaning commonly understood by those of ordinary skill in the art to which this invention pertains, and a description of well-known functions and configurations that may unnecessarily obscure the gist of the present invention in the following description and the accompanying drawings will be omitted.

[0031] One aspect of the present invention relates to a yellow clay concrete composition comprising: a first agent containing a composite of yellow clay and a polymer and ethylene vinyl acetate (EVA); and a second agent containing aggregate, cement, an admixture, and cellulose slurry.

[0032] The above yellow clay concrete composition includes a complex of yellow clay and polymer, and can uniformly disperse yellow clay in the concrete composition, maintain stable viscosity, and includes cellulose, thereby minimizing cracking and damage to the concrete, thereby increasing the durability of the concrete.

[0033] Hereinafter, a yellow clay concrete composition according to an example of the present invention will be described in more detail.

[0034] In one example of the present invention, the composite of the first yellow soil and polymer is characterized by including yellow soil, polyammonium salt, and polyacrylate.

[0035] The above yellow clay is the main material of the yellow clay concrete composition, and refers to a clay mineral with excellent far-infrared radiation. Any yellow clay commonly used in the industry can be used as the preferred yellow clay. Preferably, it is better to use a lump-free one that passes 100% through a 4.75 mm sieve, or to use a dried and powdered one so that it can maintain a solid state even when moisture seeps in after being mixed with other compositions. The above yellow clay is a fine particle containing numerous inorganic substances such as silica (SiO2), alumina (Al2O3), iron, magnesium (Mg), sodium (Na), and potassium, and has many beneficial minerals and medicinal properties for the human body, but it is difficult to disperse in water due to the hydrophobic nature of the surface, and therefore, when included in a concrete composition, chemical treatment to improve dispersibility is necessary.

[0036] The polyammonium salt is one of the polymers of the complex of the yellow soil and the polymer, and may be used having a solid content of about 35 wt% and a weight average molecular weight of 50,000 to 100,000 g / mol. As a more specific example, it may be poly(diallyldimethylammonium chloride) in an aqueous solution. The polyammonium salt is intended to induce uniform dispersion of the yellow soil by swelling the yellow soil in the aqueous solution, and may be added in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the yellow soil. When less than 0.1 parts by weight is added, uniform dispersion of the yellow soil in water cannot be expected, and when more than 3 parts by weight is added, the viscosity of the composition increases, reducing rheology and possibly lowering physical properties during future concrete production. The slurry in which the loess is swollen by the polyammonium salt has improved stability and can have a stable viscosity during storage when polyacrylic acid is added thereafter.

[0037] The above polyacrylate is another polymer included in the complex of the yellow soil and the polymer, and may be used having a weight average molecular weight of 5,000 to 10,000 g / mol. The polyacrylate is added to maintain the viscosity of the yellow soil slurry whose dispersibility has been increased by the polyammonium salt, and a more specific example thereof may be sodium polyacrylate. The polyacrylate may be included in an amount of 1 to 6 parts by weight relative to 100 parts by weight of the yellow soil. When added in an amount less than 1 part by weight, it does not contribute to viscosity maintenance stability, and when added in an amount exceeding 6 parts by weight, the slurry becomes highly viscous, which causes a problem in that storage stability is reduced.

[0038] The composite of loess and polymer, manufactured by including loess, polyammonium salt, and polyacrylate as described above, can maintain a constant viscosity, facilitating concrete workability due to the polymer constituting the composite, and exhibit excellent water-reducing / retention effects. Furthermore, when mixed with a concrete composition, it can maintain a constant number of large and small air bubbles, thereby improving the storage stability, durability, and freeze-thaw resistance of the concrete.

[0039] The above first agent may contain ethylene vinyl acetate (EVA) in addition to the complex of yellow clay and polymer. Ethylene vinyl acetate (EVA) is a polymer obtained by copolymerizing ethylene and vinyl acetate polymer, and has been used for purposes such as children's foam stickers, packaging materials, adhesive cushions, and buoyancy, and is also used as an eco-friendly adhesive. The above ethylene vinyl acetate (EVA) may be used in an emulsion state, and since the content of vinyl acetate in ethylene vinyl acetate (EVA) is large, it has fluidity and improves compatibility with other polymers or plasticizers. The above ethylene vinyl acetate (EVA) emulsion (hereinafter, "EVA emulsion") is used together with the complex of yellow clay and polymer to function as an adhesive that improves compatibility and bonding strength between concrete compositions. The above EVA emulsion may be used having a solid content of 50 to 55 wt%, a viscosity of 500 to 1000 cp (25°C, 60 rpm), and a pH of 4.5 to 6.5, and may be included in an amount of 3 to 10 parts by weight relative to 100 parts by weight of the composite of yellow soil and polymer.

[0040] Next, I will explain the second part.

[0041] The above second agent comprises aggregate, cement, admixture and cellulose slurry, and can be mixed with the above first agent to produce a yellow clay concrete composition. As a specific component of the second agent, any aggregate that conforms to KS F 2526, KS F 2527, and KS F 2573 may be used, and more preferably, one having a diameter of 10 to 15 mm may be used. If the diameter of the aggregate is less than 10 mm, there is a problem that material separation occurs when mixing with other compositions, and if the diameter exceeds 15 mm, there is a problem that the mixed composition does not fill every corner well, resulting in an unpleasant appearance. The above aggregate is preferably included in an amount of 70 to 120 parts by weight relative to 100 parts by weight of the composite of yellow clay and polymer, and more preferably, it may be included in an amount of 90 parts by weight or less. If the aggregate is included in an amount of less than 70 parts by weight, there is a problem of reduced strength, and if it is included in an amount of more than 120 parts by weight, the role and function of the composite of yellow clay and polymer cannot be exerted, and there is a problem of reduced bonding strength.

[0042] The above cement may be used without particular limitation as long as it is commonly used in yellow clay concrete, and may be, for example, Portland cement, fly ash cement, blast furnace slag cement, etc. Preferably, the cement suitable for use in the present invention may be Portland cement. The above cement may be added in an amount of 30 to 35 parts by weight relative to 100 parts by weight of the composite of yellow clay and polymer.

[0043] The above admixture can be used without limitation as long as it is commonly used in yellow clay concrete compositions, and in order to impart a desired function, one or more of AE agents, AE water reducing agents, waterproofing agents, rust inhibitors, retarders, fluidizing agents, and setting and hardening regulators can be selected and used. The above admixture can be added in an amount of 0.5 to 1.5 parts by weight relative to 100 parts by weight of the yellow clay and polymer composite, and a water reducing agent can be used to reduce the amount of cement used.

[0044] In addition, the yellow clay concrete composition of the present invention may use a reinforcing material that can improve the strength and durability of the final yellow clay concrete, and preferably, cellulose that has excellent strength and good compatibility with cement may be added.

[0045] As a specific example, the cellulose may be environmentally friendly livestock cellulose. The livestock cellulose is used as a reinforcing material to enhance the performance of cement. When the livestock cellulose is added to a yellow clay concrete composition, it acts as a kind of mesh, strengthening the structure of the yellow clay concrete, thereby reducing cracks and damage caused by external impacts and increasing the durability of the yellow clay concrete.

[0046] The above livestock manure cellulose is separated into livestock manure cellulose of 200 mesh or larger and organic matter of less than 200 mesh through solid-liquid separation after pretreatment of fermented livestock manure to remove moisture, and among these, the livestock manure cellulose can be separated and used. In this way, livestock manure, which was previously recycled as simple compost and had limited uses, can be converted into an industrial energy source or material source and used as the yellow earth concrete composition of the present invention, which has the advantage of solving environmental problems and creating added value.

[0047] The water used in the above 1st or 2nd agent can be ordinary tap water, and when using other water, follow KS F 4009 Appendix 2 ‘Water used in ready-mixed concrete mixtures’.

[0048] In addition, the above two agents may include one or more selected from among binders, pigments, soil stabilizers, and soil solidifiers as needed, and the specific types and contents may be selected within a typical range.

[0049] In addition, another aspect of the present invention relates to a method for producing a yellow clay concrete composition, comprising the steps of: preparing a first agent by mixing the yellow clay and polymer complex with ethylene vinyl acetate (EVA); and preparing a second agent containing aggregate, cement, an admixture, and cellulose slurry.

[0050] The above-mentioned complex of yellow clay and polymer can be manufactured through a step of adding a polyammonium salt to a suspension having a yellow clay solid content of 20 to 25 wt% and stirring; a step of adding a polyacrylate to a dispersion swollen by adding the polyammonium salt and stirring to manufacture a complex of yellow clay and polymer.

[0051] More specifically, the above-mentioned complex of yellow clay and polymer is prepared by sequentially adding and stirring a polyammonium salt and a polyacrylate in the above range to a suspension previously dispersed in water with a solid content of 20 to 25 wt% of yellow clay, so that the polyammonium salt and the polyacrylate in the above-mentioned range can exist in the slurry phase of the complex of yellow clay and polymer. The first agent, in which the slurry of the complex of yellow clay and polymer and ethylene vinyl acetate (EVA) are mixed, can have a solid content of 20 to 30 wt%.

[0052] The above-mentioned second agent can be easily mixed with the above-mentioned first agent when the solid content is 30 to 60 wt%, and more preferably 40 to 60 wt%, and yellow clay concrete can be manufactured by mixing and hardening the above-mentioned first agent and the above-mentioned second agent.

[0053] Hereinafter, an environmentally friendly yellow clay concrete composition comprising a yellow clay and polymer composite and cellulose powder according to the present invention, and yellow clay concrete produced therefrom, will be described in more detail through examples. However, the following examples are merely references for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

[0054] Additionally, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is merely for the purpose of describing specific embodiments and is not intended to be limiting of the invention.

[0055]

[0056] [Manufacturing of a composite of yellow clay and polymer and preparation of the first agent]

[0057] 10 g of polydiaryldimethylammonium chloride (solid content 35 wt%, weight average molecular weight 80,000 g / mol) was added to a suspension of yellow clay (500 g) dispersed in 2 L of water, stirred, and 25 g of sodium polyacrylate (weight average molecular weight 5,100 g / mol) was added to the swollen dispersion, stirred, and a slurry of a complex of yellow clay and polymer was prepared, and 25 g of EVA emulsion was added to prepare Agent 1 having a solid content of 25 wt%.

[0058]

[0059] [2nd ingredient and manufacturing]

[0060] 450 g of aggregate, 140 g of Portland cement, 6 g of sodium polynaphthalene sulfonate as an admixture, 7 g of cellulose powder, and 9 g of soil solidification agent were mixed in 1 L of water to prepare a second agent having a solid content of approximately 45 wt%.

[0061]

[0062] [Manufacture of Examples 1 to 3 and Comparative Examples 1 to 3]

[0063] In order to evaluate the characteristics of the first and second agents including the above yellow clay and polymer complex slurry and EVA emulsion, the contents were adjusted to the content ratio as shown in Table 1 below, and then hardened to manufacture yellow clay concrete specimens of Examples 1 to 3 and Comparative Examples 1 to 3.

[0064]

[0065] Unit (g) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 31 Composite of loess and polymer Loess 500 500 500 500 500 500 Polyammonium salt 1010 10-1010 Polyacrylate 25 25 25--25 EVA emulsion 25 25 25 25 25 25 Aggregate 37 5 45 0 640 45 0 45 0 45 0 Cement 16 5 17 0 17 5 17 0 17 0 Admixture 56 7 666 Livestock flour cellulose 77 777-Other 89 10 999

[0066]

[0067] [Characteristic evaluation method]

[0068] The properties of the test specimens of Examples 1 to 3 and Comparative Examples 1 to 3 manufactured according to KS F 2403 were evaluated by the following method, and the results of compressive strength, flexural strength, post-freeze-thaw compressive strength, and workability are shown in Table 2, and the results of slip resistance of Example 2 are shown in Table 3.

[0069] 1) Compressive strength: The test specimen was tested according to KS F 2405 after 28 days of standard curing.

[0070] 2) Flexural strength: The test specimen was tested according to KS F 2408 after 28 days of standard curing.

[0071] 3) Compressive strength after freezing and thawing: The test specimen was cured for 28 days and tested based on 100 cycles according to KS F 2456 (Method B).

[0072] 4) Workability: Only one of the above Examples 1 to 3 and Comparative Examples 1 to 3 was taken, and the phase separation and kneading consistency were visually evaluated for a certain period of time. If the viscosity was maintained constant and there was no difficulty in work, it was judged as O, and if phase separation occurred or the viscosity became high, it was judged as X.

[0073] 5) Slip resistance: The test specimen of Example 2 above was tested according to KS F 2375.

[0074]

[0075] Compressive strength (MPa) Flexural strength (MPa) Compressive strength after freezing and thawing (100 cycles) (MPa) Workability Example 1 31.24.0 30.7O Example 2 32.14.1 31.3O Example 3 33.23.8 27.7O Comparative Example 1 25.4 3.4 22.8X (Phase separation) Comparative Example 2 28.6 3.5 27.6X (High viscosity) Comparative Example 3 27.9 3.1 27.1O

[0076]

[0077] Slip resistance (BPN) Example 255

[0078]

[0079] Looking at the evaluation results of Example 2 and Comparative Example 1 in Table 2 above, it can be confirmed that Example 2, in which yellow clay and polymer were added in a complex, has superior mechanical properties compared to Comparative Example 1, in which yellow clay was added alone without forming a complex with the polymer. Comparative Example 1, in which yellow clay was not complexed with a polymer, showed results in which compatibility with the composition was reduced, viscosity was difficult to maintain, and workability was reduced, such as phase separation occurring after a certain period of time. Accordingly, it was confirmed that a yellow clay concrete composition with only yellow clay added had an increase in the rheology of the composition, and therefore excellent mechanical strength could not be expected.

[0080] In the case of Comparative Example 2, which used only polyammonium salt in the above loess, the mechanical strength was superior to that of Comparative Example 1, which used only loess, but it did not reach the level of Examples 1 and 3, which contained loess, polyammonium salt, and polyacrylate as a complex. In addition, it was confirmed that although the compatibility of loess within the composition was improved, the viscosity became high after a certain period of time, making it difficult to mix with the second agent and reducing workability.

[0081] In this way, it can be seen that when loess is included in a loess concrete composition in the form of a complex with a polymer, it has superior properties in terms of compressive strength, flexural strength, and post-freeze-thaw compressive strength compared to when it is included alone, and the loess concrete composition can maintain a stable viscosity while work is being performed, so workability is also excellent.

[0082] The above comparative example 3 has the same conditions as example 2 except that no cellulose powder was added, but the mechanical properties were significantly lower than those of example 2, confirming that it is desirable to add cellulose powder to improve the strength of yellow clay concrete.

[0083] Referring to Table 3 above, the slip resistance of Example 2, to which a composite of yellow clay and polymer was added, also showed excellent results at 55 BPN.

[0084] In conclusion, it was confirmed that the yellow clay concrete of the present invention has excellent mechanical properties, as shown by its compressive strength of 30 MPa or more and its flexural strength of 3.8 MPa or more or 4.0 MPa or more. In addition, it was confirmed that the compressive strength after freezing and thawing was also maintained at 27.7 MPa or more or 30 MPa or more without significant decrease even after 100 cycles.

[0085] Although the present invention has been described through specific matters and limited examples as described above, these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those skilled in the art to which the present invention pertains can make various modifications and variations based on this description.

[0086] Therefore, the idea of ​​the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims described below as well as the claims are considered to fall within the scope of the idea of ​​the present invention.

Claims

1. A first agent containing a complex of yellow clay and polymer and ethylene vinyl acetate (EVA); and 2nd agent containing aggregate, cement, admixture and cellulose; A yellow clay concrete composition characterized by including:

2. In paragraph 1, A yellow clay concrete composition characterized in that the above yellow clay and polymer complex comprises yellow clay, polyammonium salt and polyacrylate.

3. In paragraph 2, A yellow clay concrete composition characterized in that the polyammonium salt is contained in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the yellow clay.

4. In paragraph 2, A yellow clay concrete composition, characterized in that the polyammonium salt has a weight average molecular weight of 50,000 to 100,000 g / mol.

5. In paragraph 1, The above first agent is a yellow clay concrete composition characterized in that the solid content is 20 to 30 wt%.

6. In paragraph 2, A yellow clay concrete composition characterized in that the polyacrylate is contained in an amount of 1 to 6 parts by weight based on 100 parts by weight of the yellow clay.

7. In paragraph 2, A yellow clay concrete composition, characterized in that the polyacrylate has a weight average molecular weight of 5,000 to 10,000 g / mol.

8. In paragraph 1, A yellow clay concrete composition characterized in that the above ethylene vinyl acetate (EVA) is an emulsion having a viscosity of 500 to 1000 cp.

9. In paragraph 1, A yellow clay concrete composition characterized in that the above ethylene vinyl acetate (EVA) is included in an amount of 3 to 10 parts by weight based on 100 parts by weight of the yellow clay and polymer composite.

10. In paragraph 1, A yellow clay concrete composition characterized in that the aggregate is included in an amount of 70 to 120 parts by weight relative to 100 parts by weight of the yellow clay and polymer composite.

11. In paragraph 1, A yellow clay concrete composition characterized in that the cement is included in an amount of 30 to 35 parts by weight relative to 100 parts by weight of the yellow clay and polymer composite.

12. In paragraph 1, A yellow clay concrete composition characterized in that the above admixture is included in an amount of 0.5 to 1.5 parts by weight relative to 100 parts by weight of the yellow clay and polymer composite.

13. In paragraph 1, A yellow clay concrete composition characterized in that the above-mentioned cellulose is included in an amount of 0.2 to 2 parts by weight relative to 100 parts by weight of the yellow clay and polymer composite.

14. In paragraph 1, The above two agents are yellow clay concrete compositions characterized in that the solid content is 30 to 60 wt%.

15. A method for producing a yellow clay concrete composition, comprising: a step of producing a first agent containing a complex of yellow clay and a polymer and ethylene vinyl acetate (EVA); and a step of producing a second agent containing aggregate, cement, an admixture, and cellulose slurry.

16. In paragraph 15, A method for producing a yellow clay concrete composition, characterized in that the above yellow clay and polymer composite comprises the steps of: adding a polyammonium salt to a suspension having a yellow clay solid content of 20 to 25 wt% and stirring; adding a polyacrylate to the swollen dispersion by adding the polyammonium salt and stirring to produce a yellow clay and polymer composite.

17. In paragraph 15, A method for producing a yellow clay concrete composition, characterized in that the above ethylene vinyl acetate (EVA) is included in an amount of 3 to 10 parts by weight based on 100 parts by weight of the yellow clay and polymer composite.

18. Yellow clay concrete characterized by being hardened according to the manufacturing method of any one of Articles 15 to 17.

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