CN113563041B - Soft porcelain and preparation method thereof - Google Patents

Abstract

The invention discloses a soft porcelain and a preparation method thereof, and relates to the technical field of chemical building materials. The soft porcelain comprises the following components: engineering waste soil, an organic modifier, an inorganic modifier, a water reducing agent, water, fiber and a functional agent. The soft porcelain provided by the invention takes the engineering waste soil as a raw material, and utilizes the complementary and synergistic effects of the inorganic modifier and the organic modifier to modify the engineering waste soil, so that the activity of the engineering waste soil is improved; the use of the functional agent increases the binding force between the inorganic material and the organic material in the soft porcelain, and the soft porcelain provided by the invention has the advantages of higher tensile strength, low water absorption and stable performance.

Description

Soft porcelain and preparation method thereof

Technical Field

The invention relates to the technical field of chemical building materials, in particular to soft porcelain and a preparation method thereof.

Background

With the development of urban construction, various landmark buildings and high-rise and super high-rise buildings are pulled out. The construction method of the engineering groove soil generated by the former house construction is mostly treated in a backfill mode, the groove soil backfill is not needed in the existing high-rise building, and the deeper the excavation is, the more the quantity of the engineering waste soil is increased. In addition, in recent years, as various large underground projects such as urban underground traffic construction, underground pipe gallery construction and the like in China develop rapidly, more and more excavation waste soil is generated and accumulated in a large amount, and is difficult to process.

At present, most of project spoil in China is not effectively utilized, and after collection, 3 main projects are in the direction: firstly, no fixed digestion place exists, and disorder and disorderly fall; secondly, by means of market spontaneous adjustment, civil employees search wasteland outside the city or rent rural collective land to form a temporary consumption place; thirdly, governments carry out centralized management to build absorption places or treatment facilities. With the arrival of extreme weather such as heavy rain, landslides easily occur in the places of consumption, and serious loss is caused to lives and properties of people.

Disclosure of Invention

The invention mainly aims to provide a soft porcelain and a preparation method thereof, and aims to obtain a soft porcelain with better performance by utilizing engineering waste soil.

In order to achieve the purpose, the invention provides a soft porcelain, which comprises the following components:

engineering waste soil, an organic modifier, an inorganic modifier, a water reducing agent, water, fiber and a functional agent.

Optionally, the soft porcelain comprises the following components in parts by weight:

65-75 parts of engineering waste soil, 12-20 parts of organic modifier, 5-10 parts of inorganic modifier, 1-2 parts of water reducer, 10-20 parts of water, 1-2 parts of fiber and 1-5 parts of functional agent.

Optionally, the organic modifier comprises at least one of styrene-acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene emulsion and acrylic emulsion.

Optionally, in the organic modifier, the mass fraction of the solid is 40% to 50%.

Optionally, the inorganic modifier comprises at least one of silica sol, nano-silica, silica fume and alkali activator.

Optionally, the water reducer comprises a polycarboxylic acid high efficiency water reducer.

Optionally, the water reducing rate of the water reducing agent is a, and a is more than or equal to 25%.

Optionally, the fibers comprise at least one of polypropylene fibers, polyvinyl alcohol fibers, basalt fibers, glass fibers, and fiberglass mesh.

Optionally, the functional agent comprises at least one of a leveling agent, a silane coupling agent, a wetting agent and a water retention agent.

The invention further provides a preparation method of the soft porcelain, which comprises the following steps:

s10, uniformly mixing an organic modifier, an inorganic modifier, a water reducing agent, water, fibers and a functional agent to obtain a mixed solution;

s20, uniformly mixing the mixed solution with engineering waste soil to obtain a mixture;

s30, pouring the mixture into a mold, and pressing and vibrating for 5-10S to obtain a semi-finished product;

and S40, standing the semi-finished product for 24-36 hours, and demolding to obtain the soft porcelain.

In the technical scheme, the soft porcelain is prepared by taking engineering waste soil as a raw material, and modifying the engineering waste soil by utilizing the complementary and synergistic effects of an inorganic modifier and an organic modifier to improve the activity of the engineering waste soil; the use of the functional agent increases the binding force between the inorganic material and the organic material in the soft porcelain, and the soft porcelain provided by the invention has the advantages of higher tensile strength, low water absorption and stable performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic flow chart of an embodiment of the method for preparing soft porcelain according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front, rear, outer, and inner … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

At present, most of the engineering waste soil in China is not effectively utilized, and after being collected, 3 main projects are in the direction of: firstly, no fixed digestion place exists, and disorder and disorderly fall; secondly, by means of market spontaneous adjustment, civil employees search wasteland outside the city or rent rural collective land to form a temporary consumption place; thirdly, governments carry out centralized management to build absorption places or treatment facilities. With the arrival of extreme weather such as heavy rain, landslides easily occur in the places of consumption, and serious loss is caused to lives and properties of people.

In view of the above, the invention provides a soft porcelain and a preparation method thereof, and aims to obtain a soft porcelain with better performance by utilizing engineering waste soil. In the attached drawings, fig. 1 is a schematic flow chart of an embodiment of the preparation method of the soft porcelain provided by the invention.

The invention provides a soft porcelain, which comprises the following components:

engineering waste soil, an organic modifier, an inorganic modifier, a water reducing agent, water, fiber and a functional agent.

In the technical scheme, the soft porcelain is prepared by taking engineering waste soil as a raw material, and modifying the engineering waste soil by utilizing the complementary and synergistic effects of an inorganic modifier and an organic modifier so as to improve the activity of the engineering waste soil; the use of the functional agent increases the binding force between the inorganic material and the organic material in the soft porcelain, and the soft porcelain provided by the invention has the advantages of higher tensile strength, low water absorption and stable performance.

The water reducing agent has a dispersing function, can improve the workability, reduce the unit water consumption and improve the fluidity of each component of the soft porcelain; the fiber can increase the integrity of the soft porcelain and prevent local cracking, and the functional agent can play a role in enhancing the function of one aspect of the soft porcelain, such as increasing the wettability.

The invention is not limited by the ratio of the components in the soft porcelain, and preferably, the soft porcelain comprises the following components in parts by weight:

65-75 parts of engineering waste soil, 12-20 parts of organic modifier, 5-10 parts of inorganic modifier, 1-2 parts of water reducing agent, 10-20 parts of water, 1-2 parts of fiber and 1-5 parts of functional agent.

The waste resource engineering waste soil can be fully utilized under the proportion, and the content of the engineering waste soil reaches more than 65 percent; the obtained product is beautiful, has high added value, is environment-friendly and pollution-free, and is a green building material.

The source of the engineering spoil is not limited, and in the embodiment of the invention, the engineering spoil is the residual engineering spoil after backfilling in the later stage of the engineering in a project from the Guangming new region of Shenzhen city, and is in a yellow powder state.

The present invention is also not limited to the kind of the organic modifier, and preferably, the organic modifier includes at least one of styrene-acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene emulsion, and acrylic emulsion.

The styrene-acrylic emulsion (styrene-acrylic ester emulsion) is obtained by emulsion copolymerization of styrene and acrylic ester monomers, has good adhesive force, transparent adhesive film, good water resistance, oil resistance, heat resistance and aging resistance, and can be acrylic emulsion 604, acrylic emulsion 7199 and the like according to the difference of components; vinyl acetate-ethylene copolymer emulsion, i.e. VAE emulsion, is a milky white liquid, the ethylene component provides softness to the copolymer, and the emulsion is very stable; the butylbenzene emulsion has higher conjunctival strength and cohesive force, strong water-resistant printability and wear resistance, good stability and fluidity, large filling amount, good molding property, excellent mechanical, chemical and freeze-thaw stability; the pure acrylic emulsion is transparent or milky white slightly yellowish viscous liquid, has fine particle size, high gloss, excellent weather resistance and excellent anti-tack property, and has wide applicability.

At least one of the organic modifiers can act together with a non-polar modifier to modify the engineering waste soil, so that the activity of the engineering waste soil is greatly improved.

Preferably, in the organic modifier, the mass fraction of solids is 40% to 50%. In the organic modifier, the effective components are suspended in a solvent in a solid form to form a stable emulsion, the mass fraction of the solid is within the range of 40-50%, and the modification effect is obvious.

The invention also does not limit the kind of the inorganic modifier, and preferably, the inorganic modifier comprises at least one of silica sol, nano-silica, silica fume and alkali activator.

Silica gel (Silica gel; silica) is also known as silicic acid gel, which is a high-activity adsorption material and belongs to an amorphous substance, and the chemical formula of the silicic acid gel is mSiO ₂ ·nH ₂ O; the paint does not react with any substance except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, is nontoxic and tasteless, and has stable chemical property; the silica fume is also called micro silica powder to form a multi-layer protective layer, and has good mechanical property and high-temperature resistance and oxidation resistance; the alkali activator is generally caustic alkali or alkali-containingThe silicate, aluminate, phosphate, sulfate, carbonate and other substances of the sexual elements play a catalytic role in the hydration of the slag, so that the hydration reaction of the slag is accelerated.

The invention is also not limited to the kind of water reducing agent, and preferably, the water reducing agent comprises a polycarboxylic acid high efficiency water reducing agent. The polycarboxylic acid high-efficiency water reducing agent is a third-generation high-performance water reducing agent developed after a common water reducing agent represented by calcium lignosulphonate and a high-efficiency water reducing agent represented by naphthalene, and is a high-efficiency water reducing agent with the forefront, the highest scientific and technological content, the best application prospect and the optimal comprehensive performance in the world at present.

More preferably, in the embodiment of the invention, the water reducing rate of the water reducing agent is a, and a is more than or equal to 25%. Therefore, the working performance of the obtained product can be effectively improved, and the use amount of water is reduced.

The kind of the fiber, which is not limited in the present invention, preferably includes at least one of polypropylene fiber (PP fiber), polyvinyl alcohol fiber (PVA fiber), basalt fiber, glass fiber, and glass fiber mesh.

The polypropylene fiber has high strength, good elasticity, wear resistance and corrosion resistance, the polyvinyl alcohol fiber has good mechanical property, high strength, high modulus, low elongation, acid and alkali resistance and strong chemical resistance, and the loss rate of the fiber strength is low under long-term sunshine, so the polypropylene fiber has good dispersibility, namely, the fiber is not adhered, the dispersibility in water is good, the affinity with cement, plastics and the like is good, the adhesive strength is high, and the polypropylene fiber is non-toxic and harmless to human bodies and the environment; the basalt fiber is a continuous fiber which is formed by melting basalt stone at 1450-1500 ℃ and drawing the basalt stone at high speed through a platinum-rhodium alloy wire drawing bushing, and has a smooth surface and low surface energy; glass fiber (Fibreglass) is an inorganic non-metallic material with excellent performance, and has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength; the glass fiber mesh fabric is prepared by taking glass fiber woven fabric as a base material and soaking a coating layer by using a high-molecular anti-emulsion. Thereby having good alkali resistance, flexibility and high tensile resistance in the warp and weft directions.

At least one of the fibers is added into the soft porcelain, so that the integrity of the soft porcelain can be greatly increased, and local cracking is effectively prevented.

The present invention is also not limited to the kind of the functional agent, and preferably, the functional agent includes at least one of a leveling agent, a silane coupling agent, a wetting agent, and a water retaining agent. The leveling agent can enable the soft porcelain to form a flat, smooth and uniform whole, can reduce the possibility of generating spots and scars and increase the coverage; the silane coupling agent is between an inorganic interface and an organic interface, can form a bonding layer of an organic matrix, the silane coupling agent and the inorganic matrix, and can promote the fusion of organic matters and inorganic matters in the raw materials; the wetting agent can increase the wettability of the material; the water-retaining agent has strong water absorption capacity and can prevent the loss of water in the material.

It is understood that the types of the organic modifier, the inorganic modifier, the water reducing agent, the fiber and the functional agent can be simultaneously satisfied, or only one or more of them can be satisfied, which is not limited by the present invention, but as a preferred embodiment of the present invention, the types of the organic modifier, the inorganic modifier, the water reducing agent, the fiber and the functional agent are simultaneously satisfied, such that the obtained soft porcelain has high tensile strength, low water absorption and stable performance.

Referring to fig. 1, the present invention further provides a method for preparing the soft porcelain, which comprises the following steps:

s10, uniformly mixing an organic modifier, an inorganic modifier, a water reducing agent, water, fibers and a functional agent to obtain a mixed solution;

s20, uniformly mixing the mixed solution with engineering waste soil to obtain a mixture;

s30, pouring the mixture into a mold, and pressing and vibrating for 5-10S to obtain a semi-finished product;

and S40, standing the semi-finished product for 24-36 hours, and demolding to obtain the soft porcelain.

The preparation method of the soft porcelain provided by the invention has all the beneficial effects of the soft porcelain, and is not repeated herein.

An example of the method for producing a soft porcelain according to the present invention is given below:

(1) Uniformly mixing 12-20 parts of organic modifier (at least one of styrene-acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene emulsion and pure acrylic emulsion, the mass fraction of solids is 40-50%), 5-10 parts of inorganic modifier (at least one of silica sol, nano silicon dioxide, silica fume and alkali activator), 1-2 parts of water reducer (polycarboxylic acid high-efficiency water reducer, the water reduction rate a is more than or equal to 25%), 10-20 parts of water, 1-2 parts of fiber (at least one of polypropylene fiber, polyvinyl alcohol fiber, basalt fiber, glass fiber and glass fiber mesh cloth) and 1-5 parts of functional agent (at least one of leveling agent, silane coupling agent, wetting agent and water-retaining agent) to obtain mixed solution;

(2) Uniformly mixing the mixed solution with 65-75 parts of engineering waste soil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 5-10 s, and forming to obtain a semi-finished product; and standing the semi-finished product for 24-36 h, and demoulding to obtain the soft porcelain.

The technical solutions of the present invention are further described in detail with reference to the following specific examples, which should be understood as merely illustrative and not limitative.

Example 1

(1) Uniformly mixing 17 parts of an organic modifier (styrene-acrylic emulsion, acrylic emulsion 604 and acrylic emulsion 7199 in a mass ratio of 1:1 and 50% of solid in mass fraction), 5 parts of an inorganic modifier (silica sol), 1 part of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent with a water reducing rate of a = 35%), 10 parts of water, 1 part of fiber (polypropylene fiber) and 1 part of a functional agent (a leveling agent and a wetting agent in a mass ratio of 1:1) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 65 parts of engineering spoil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 5s, and forming to obtain a semi-finished product; and standing the semi-finished product for 36 hours, and demolding to obtain the soft porcelain.

Example 2

(1) Uniformly mixing 17 parts of an organic modifier (styrene-acrylic emulsion, acrylic emulsion 604 and acrylic emulsion 7199, by mass, 1:1, and 40% of solid by mass), 5 parts of an inorganic modifier (silica sol), 1 part of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent, the water reducing rate of which is a = 25%), 10 parts of water, 1 part of fiber (polypropylene fiber) and 1 part of a functional agent (silane coupling agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 65 parts of engineering spoil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 10s, and forming to obtain a semi-finished product; and standing the semi-finished product for 24 hours, and demolding to obtain the soft porcelain.

Example 3

(1) Uniformly mixing 17 parts of an organic modifier (styrene-acrylic emulsion, acrylic emulsion 604 and acrylic emulsion 7199, by mass, 2:1 and 45 mass percent of solid), 5 parts of an inorganic modifier (silica sol), 1 part of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent, the water reducing rate of which is a = 45%), 10 parts of water, 1 part of fiber (polypropylene fiber) and 1 part of a functional agent (silane coupling agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 65 parts of engineering spoil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 6s, and forming to obtain a semi-finished product; and standing the semi-finished product for 30 hours, and demolding to obtain the soft porcelain.

Example 4

(1) Uniformly mixing 12 parts of an organic modifier (styrene-acrylic emulsion, acrylic emulsion 604 and acrylic emulsion 7199 in a mass ratio of 1:1, and 47 mass percent of solid), 5 parts of an inorganic modifier (silica sol), 1 part of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent, the water reducing rate a = 30%), 10 parts of water, 1 part of fiber (polypropylene fiber) and 1 part of a functional agent (silane coupling agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 70 parts of engineering waste soil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 7s, and forming to obtain a semi-finished product; and standing the semi-finished product for 35 hours, and demolding to obtain the soft porcelain.

Example 5

(1) Uniformly mixing 12 parts of an organic modifier (styrene-acrylic emulsion, acrylic emulsion 604 and acrylic emulsion 7199 in a mass ratio of 1:1, and the mass fraction of solids is 43%), 10 parts of an inorganic modifier (silica sol), 1 part of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent, the water reducing rate a = 40%), 10 parts of water, 1 part of fiber (polypropylene fiber) and 1 part of a functional agent (silane coupling agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 65 parts of engineering waste soil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 8s, and forming to obtain a semi-finished product; and standing the semi-finished product for 28 hours, and demolding to obtain the soft porcelain.

Example 6

(1) Uniformly mixing 20 parts of an organic modifier (vinyl acetate-ethylene copolymer emulsion and styrene-butadiene emulsion, wherein the mass fraction of solids is 42%), 7 parts of an inorganic modifier (nano silicon dioxide and silica fume), 2 parts of a water reducing agent (polycarboxylic acid high-efficiency water reducing agent, the water reducing rate is a = 45%), 20 parts of water, 2 parts of fibers (polyvinyl alcohol fibers, basalt fibers and glass fibers) and 5 parts of a functional agent (water-retaining agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 75 parts of engineering waste soil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 9s, and forming to obtain a semi-finished product; and standing the semi-finished product for 25 hours, and demolding to obtain the soft porcelain.

Example 7

(1) Uniformly mixing 16 parts of organic modifier (49 mass percent of solid, namely vinyl acetate-ethylene copolymer emulsion, styrene-butadiene emulsion and pure acrylic emulsion), 8 parts of inorganic modifier (nano silicon dioxide, silica fume and alkali activator), 1 part of water reducer (polycarboxylic acid high-efficiency water reducer, the water reduction rate a = 28%), 15 parts of water, fibers (polypropylene fibers, polyvinyl alcohol fibers, basalt fibers, glass fiber mesh cloth 2 parts, and 3 parts of functional agent (leveling agent, wetting agent and water retention agent) to obtain a mixed solution;

(2) Uniformly mixing the mixed solution with 68 parts of engineering waste soil to obtain a mixture;

(3) Pouring the mixture into a mould, pressing and vibrating for 10s, and forming to obtain a semi-finished product; and standing the semi-finished product for 30 hours, and demolding to obtain the soft porcelain.

Comparative example 1

The procedure and conditions were the same as in example 1 except that 22 parts of the organic modifier (50% by mass of solids in the acrylic emulsion 604, acrylic emulsion 7199, 1:1) was used in the step (1) and no inorganic modifier was added.

Comparative example 2

The procedure and conditions were the same as in example 1 except that no organic modifier was added in step (1) and 22 parts of an inorganic modifier (silica sol) was added.

Tensile strength and water absorption were measured for the soft porcelain obtained in examples 1 to 7 and comparative examples 1 to 2, and then, after immersion in water for 3 days, tensile strength was measured again to obtain Table 1.

TABLE 1 determination of the Properties of the Soft porcelain for examples 1-7 and comparative examples 1-2

Referring to table 1, it can be seen that the soft porcelain obtained in the embodiments 1 to 7 of the present invention has low water absorption, and the tensile strength before and after soaking in water does not change much, which indicates that the soft porcelain obtained in the embodiments of the present invention has good water resistance and stability; compared with the embodiment 1, the soft porcelain obtained in the comparative example 1 and the comparative example 2 has the advantages that 22 parts of organic modifier is added, no inorganic modifier is added, 22 parts of inorganic modifier is added in the comparative example 2, no organic modifier is added, the water absorption of the soft porcelain obtained in the comparative example 1 and the comparative example 2 is high, the tensile strength before soaking is low, the tensile strength after soaking is obviously reduced, the stability is poor, and the organic modifier and the inorganic modifier are mutually complementary and cooperate to increase the activity of the engineering waste soil, so that the performance of the obtained soft porcelain is synergistically improved.

In conclusion, the soft porcelain prepared by the method takes the engineering waste soil as a raw material, and on one hand, the complementary and synergistic effects of the inorganic modifier and the organic modifier are utilized to modify the engineering waste soil and improve the activity of the engineering waste soil, and on the other hand, the waste utilization is realized, and the requirements of sustainable development are met.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. The soft porcelain is characterized by comprising the following components:

65-75 parts of engineering waste soil, 12-20 parts of organic modifier, 5-10 parts of inorganic modifier, 1-2 parts of water reducing agent, 10-20 parts of water, 1-2 parts of fiber and 1-5 parts of functional agent; the organic modifier comprises at least one of styrene-acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene emulsion and pure acrylic emulsion; the inorganic modifier comprises at least one of silica sol, nano-silica, silica fume and alkali activator; the functional agent comprises at least one of a leveling agent, a silane coupling agent, a wetting agent and a water-retaining agent.

2. The soft porcelain of claim 1, wherein the organic modifier comprises 40% to 50% solids by weight.

3. The soft porcelain of claim 1, wherein the water reducer comprises a polycarboxylic acid high range water reducer.

4. The soft porcelain of claim 1, wherein the water reducing agent has a water reducing rate a of not less than 25%.

5. The soft porcelain of claim 1, wherein said fibers comprise at least one of polypropylene fibers, polyvinyl alcohol fibers, basalt fibers, glass fibers, fiberglass scrim.

6. A method for the preparation of the soft porcelain according to any one of claims 1 to 5, comprising the steps of:

s10, uniformly mixing an organic modifier, an inorganic modifier, a water reducing agent, water, fibers and a functional agent to obtain a mixed solution;

s20, uniformly mixing the mixed solution with engineering waste soil to obtain a mixture;

s30, pouring the mixture into a mold, and pressing and vibrating for 5-10S to obtain a semi-finished product;

and S40, standing the semi-finished product for 24-36 hours, and demolding to obtain the soft porcelain.

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