A ceramic mud dispersant and a preparation method thereof, a ceramic mud slurry and a preparation method and application thereof, and a concrete

Abstract

The present application relates to the technical field of concrete, and particularly relates to a ceramic mud dispersant, a preparation method thereof, a ceramic mud slurry, a preparation method and application thereof, and concrete. The ceramic mud dispersant comprises the following components in parts by weight: a water reducing component 10-30 parts, a retarding component 0.5-2 parts, an early strength component 1-4 parts, a defoaming component 0.05-1 part, and water 63-88.45 parts. The ceramic mud dispersant can overcome the problem of a small ceramic mud mixing amount in concrete, can improve the ceramic mud replacement ratio, can improve the poor flowability and large flowability loss over time of the concrete, and can also improve the early strength of the concrete, thereby solving the problem of a low ceramic mud mixing amount, can effectively reduce the comprehensive cost of the concrete, can improve the recycling of ceramic waste, and can reduce environmental pollution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete, in particular to a ceramic mud dispersant, a preparation method thereof, a ceramic mud slurry, a preparation method and application thereof, and concrete. BACKGROUND

[0002] Ceramic mud is a powder with a certain fineness produced during a series of processes of ceramic polished tiles, which is a waste material collected and piled up after watering and airing. There are millions of tons of polished tile polishing waste powder produced in China every year.

[0003] With the increase of ceramic mud waste, how to recycle and reuse the ceramic mud waste has become a problem that society increasingly values. At present, the Ceramic Tile Polishing Micro Powder for Cement and Concrete, which is approved and published by China Building Material Federation, promotes the application of ceramic tile polishing powder in cement concrete. In addition, there are many studies on the use of waste ceramic mud as a concrete admixture in China.

[0004] However, based on the current application technology and application of ceramic mud, when ceramic mud is applied in concrete, the proportion of ceramic mud replacing fly ash can only be controlled below 60%, which leads to a small amount of recycled ceramic mud. If the proportion of ceramic mud replacing other raw materials (such as fly ash) in concrete is increased, the fluidity of the concrete will become poor and the loss over time will be large.

[0005] Therefore, how to ensure that ceramic mud is added to concrete in a large amount while the prepared concrete still maintains good fluidity and loss over time is a technical difficulty that technicians in the field are committed to solving. SUMMARY

[0006] To solve the problems of the prior art mentioned in the background, the present application provides a ceramic mud dispersant. The purpose of the present application is to overcome the defect that ceramic mud can only be limited in a small amount, effectively increase the replacement ratio of ceramic mud, improve the fluidity of concrete, and solve the problem of large loss over time.

[0007] The ceramic mud dispersant provided by the present application has the following technical scheme: by weight, the ceramic mud dispersant includes the following raw material components: 10-30 parts of a water reducing component, 0.5-2 parts of a retarding component, 1-4 parts of an early strength component, 0.05-1 parts of an antifoaming component, and 63-88.45 parts of water.

[0008] In an embodiment, it is composed of a water reducing component, a retarding component, an early strength component, an antifoaming component, and water.

[0009] In an embodiment, the water-reducing component comprises polycarboxylic acid water-reducing agent A or a combination of polycarboxylic acid water-reducing agent A and polycarboxylic acid water-reducing agent B; wherein the polycarboxylic acid water-reducing agent A is a water-reducing agent copolymerized from an EPEG type unsaturated polyether macromonomer and an unsaturated acid monomer; and the polycarboxylic acid water-reducing agent B is a water-reducing agent copolymerized from an HPEG type unsaturated polyether macromonomer and an unsaturated acid monomer.

[0010] In an embodiment, the polycarboxylic acid water-reducing agent A has the following structural formula:

[0011]

[0012] wherein R1 is an alkylene group of 0-4 carbons, R2 is COOM or SO3M or PO3M2, M is H or an alkylene group of 0-4 carbons or Na, K, NH4, R3 is H or CH3, R4 is an alkylene group of 0-4 carbons, X is O or S, R5 is an alkylene group of 0-4 carbons, R6 is an alkylene group of 0-4 carbons, R7 is COOM or SO3M or PO3M2 or SO2NH2, R8 is H or CH3; R9 is OC2H4; the ratio of a to d is 2.45:1, n=68, the ratio of b, c and d is 4:1:24.

[0013] In an embodiment, the retarding component is one or more combinations of phosphate, white sugar, sodium gluconate, malt dextrin, sodium phosphate, sodium pyrophosphate; the early strength component is one or more combinations of triethanolamine, sodium sulfate, calcium formate, calcium chloride, potassium chloride, sodium nitrate, triethanolamine-chloride, a composite early strength agent; and the defoaming component is one or more combinations of polyether defoaming agent, silicone defoaming agent, mineral oil defoaming agent, polyether modified silicon defoaming agent.

[0014] The application also provides a preparation method of the ceramic mud dispersant, comprising the following steps: dissolving the early strength component in a first portion of water according to a weight ratio to obtain a solution;

[0015] According to a weight ratio, the water-reducing component, the retarding component and the defoaming component are weighed and added into the solution, and then a second portion of water is added and uniformly dispersed to obtain the ceramic mud dispersant.

[0016] The sum of the amount of the first portion of water and the amount of the second portion of water is the total amount of water.

[0017] The application also provides a ceramic mud slurry, which comprises the following raw material components according to weight parts: 30-60 parts of water, 40-70 parts of ceramic mud and 0.15-0.4 parts of the ceramic mud dispersant; wherein the ceramic mud dispersant is the ceramic mud dispersant described above or is prepared by the preparation method of the ceramic mud dispersant described above.

[0018] The present invention also provides a method for preparing the ceramic slurry as described above, which includes the following preparation steps: adding water to a container according to the weight ratio, adding ceramic clay and ceramic clay dispersant while stirring, and stirring evenly to obtain the ceramic slurry.

[0019] The present invention also provides an application of ceramic slurry in the preparation of concrete, wherein the ceramic slurry is incorporated in place of fly ash in the concrete mix proportion; wherein the ceramic slurry dispersant is the ceramic slurry dispersant as described above; or, the ceramic slurry dispersant is prepared by the ceramic slurry dispersant preparation method described above.

[0020] The present invention also provides a concrete, the raw material components of which include ceramic slurry; wherein the ceramic slurry dispersant is the ceramic slurry dispersant as described above; or, the ceramic slurry dispersant is prepared by the ceramic slurry dispersant preparation method described above.

[0021] Based on the above, compared with the prior art, the present invention has the following beneficial effects:

[0022] The ceramic mud dispersant provided by this invention can be used to disperse ceramic mud. The ceramic mud slurry obtained by treatment with this dispersant has good fluidity and is not prone to settling and clumping, making it more operable in the production of concrete. The ceramic mud slurry prepared by using the ceramic mud dispersant provided by this invention can overcome the problem of low ceramic mud dosage in concrete. It can increase the ceramic mud replacement ratio, improve the problems of poor concrete fluidity and large loss over time, and also improve the early strength of concrete. Thus, it solves the problem of low ceramic mud dosage, effectively reduces the overall cost of concrete, improves the recycling of ceramic waste, and reduces environmental pollution.

[0023] Other features and beneficial effects of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other beneficial effects of the invention can be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figure.

[0025] Figure 1 Infrared spectra of polycarboxylate superplasticizer A used in the embodiments and comparative examples provided in this invention;

[0026] Figure 2 Infrared spectra of polycarboxylate superplasticizer B used in the embodiments and comparative examples provided in this invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that all terms used in this invention (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains, and should not be construed as limiting the invention; it should be further understood that the terms used in this invention should be understood to have the same meaning as those in the context of this specification and in the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this invention.

[0029] This invention provides an operational example of a method for preparing a ceramic mud dispersant, which includes the following preparation steps:

[0030] (1) Dissolve the early strength component in the first part of water according to the weight ratio to obtain a solution;

[0031] (2) Weigh out the water-reducing component, the retarding component and the defoaming component according to the weight ratio, add them to the solution, and then add the second part of water. Disperse evenly to obtain ceramic mud dispersant.

[0032] The total amount of water is the sum of the amount of water used in the first part and the amount of water used in the second part; the solid content of the ceramic mud dispersant is (14.0~45.0)%, where the solid content of the ceramic mud dispersant does not refer to the mass percentage of the water-reducing component, retarding component, early strength component and defoaming component in the total amount of dispersant.

[0033] The raw material formula of the ceramic mud dispersant is as follows: by weight, it includes the following raw material components: 10-30 parts water-reducing component, 0.5-2 parts retarding component, 1-4 parts early strength component, 0.05-1 part defoaming component, and 63-88.45 parts water.

[0034] This invention provides an operational example of a method for preparing ceramic slurry, which includes the following preparation steps:

[0035] Add water to a container according to the weight ratio, and add ceramic clay and ceramic clay dispersant while stirring. Stir until uniform to obtain the ceramic slurry. The formula of the ceramic slurry is as follows: by weight, it includes the following raw material components: 30-60 parts water, 40-70 parts ceramic clay, and 0.15-0.4 parts ceramic clay dispersant.

[0036] The present invention also provides the following embodiments and comparative examples to verify the effectiveness of this application.

[0037] 1. The fluidity of ceramic slurry

[0038] (1) Provide ceramic mud dispersant formulations as shown in Table 1:

[0039] Table 1. Ceramic Slurry Dispersant Formulation (Unit: Percentage / %)

[0040]

[0041]

[0042] In Examples 1-4, Comparative Examples 4-6, and Comparative Example 10 of Table 1:

[0043] The polycarboxylate superplasticizer A is a superplasticizer copolymerized from EPEG-type unsaturated polyether macromonomers and unsaturated acid monomers, specifically Point-4407 superplasticizer produced by Kezhijie New Materials Group (Guangdong) Co., Ltd., whose infrared spectrum is shown below. Figure 1 As shown, its structure is as follows: R1 is an alkylene group with 0-4 carbons; R2 is COOM, SO3M, or PO3M2; M is H, an alkylene group with 0-4 carbons, or Na, K, or NH4; R3 is H or CH3; R4 is an alkylene group with 0-4 carbons; X is O or S; R5 is an alkylene group with 0-4 carbons; R6 is an alkylene group with 0-4 carbons; R7 is COOM, SO3M, PO3M2, or SO2NH; R8 is H or CH3; R9 is OC2H4; the ratio of a to d is 2.45:1; n = 68; the ratio of b, c, and d is 4:1:24. Its Mn is 34450, Mw is 62461, Mp is 49765, and its PDI is 1.81.

[0044]

[0045] The polycarboxylate superplasticizer B is a superplasticizer copolymerized from HPEG-type unsaturated polyether macromonomers and unsaturated acid monomers, specifically the Point-4408 brand superplasticizer produced by Kezhijie New Materials Group (Guangdong) Co., Ltd., whose infrared spectrum is shown below.Figure 2 As shown; the defoamer used is DF-210 defoamer sold by Toho Chemical (Shanghai) Co., Ltd.

[0046] The composite early strength agent is self-made, specifically using sodium nitrite, calcium chloride, and triethanolamine, wherein the mass ratio of sodium nitrite, calcium chloride, and triethanolamine is 1.2:0.3:0.3. The preparation process is as follows: weigh the above components according to the above ratio, mix them, and grind them thoroughly.

[0047] In Comparative Examples 7-8 of Table 1, the selection of components in Comparative Examples 7-8 is consistent with that in the Examples, the only difference is that sodium chloride was used as the early strength agent in Comparative Example 7, and calcium sulfate was used as the early strength agent in Comparative Example 8.

[0048] The preparation process of the dispersant in the examples and comparative examples is as follows:

[0049] 1) Stir the early-strength component with some purified water for 10 minutes to ensure that the early-strength component is completely dissolved and homogeneous, thus obtaining a homogeneous solution;

[0050] 2) Weigh the remaining components according to the mass fractions, add them to the homogeneous solution in sequence, add the remaining purified water, stir for 30 minutes, and the ceramic mud dispersant is obtained.

[0051] (2) Verification Experiment 1:

[0052] The ceramic mud dispersant obtained in the examples and comparative examples in Table 1 was mixed with ceramic mud to prepare a uniform ceramic mud slurry with a solid content of 60% for experimental verification. The process was as follows: 40% pure water was weighed and added to the production vessel by mass percentage. 60% ceramic mud was added while stirring, and 0.3% dispersant was added at the same time. The mixture was stirred for 60 minutes to obtain a uniform ceramic mud slurry with a solid content of 60%.

[0053] 300g of the ceramic slurry prepared in the above examples and comparative examples were weighed and tested for fluidity. The slurry was then sealed in a bowl and stored for further testing of its fluidity over time. The results are shown in Table 2 (the difference between Comparative Example 1 and Example 1 is that Comparative Example 1 does not contain a dispersant with a solid content of 60%).

[0054] Table 2

[0055]

[0056] 2. The impact of ceramic slurry on concrete

[0057] (1) In order to verify the effect of ceramic slurry with added dispersant in the above verification test 1 on concrete, a C30 concrete mix proportion was set for verification. The concrete mix proportion is shown in Table 3:

[0058] Table 3. Experimental component proportions (unit: kg / m³)

[0059]

[0060] In Table 3, considering that there is 40% water in the ceramic slurry, the water content of the mix proportions PB1 and PB2 is adjusted to ensure that the water content in the mix proportions is consistent.

[0061] The cement used is Yuexiu P.O42.5R cement, with a standard consistency water requirement of 25.8% and a 28-day compressive strength of 46.1 MPa; the fly ash used has a water requirement ratio of 101% and meets the soundness requirements; the ceramic slurry used is waste powder from polishing ceramic tiles, with a fineness of 11.8% and an activity strength of 87.5%; the mineral powder used has a specific surface area of ​​412 m². 2 / kg, density 2820kg / m³ 3 The 28-day activity index was 97%; the fineness modulus of the manufactured sand was 2.6, and the MB value was 1.5; the fineness modulus of the washed sand was 2.9, and the mud content was 2.9%; the crushed stone had a particle size of 5-20 mm and a bulk density of 1670 kg / m³. 3 Apparent density 2850 kg / m³ 3 The needle-like particles contain 2.8% of the material, and the mud content is 0.2%. The adhesive and sand used in the examples are all from Guangdong.

[0062] (2) Verification Experiment 2

[0063] Workability tests were conducted according to GB / T 50080-2002 "Standard for Test Methods of Performance of Ordinary Concrete Mixtures". Using concrete test blocks as reference objects, compressive strength was tested using a universal compression testing machine according to GB / T 50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete". The test results are shown in Table 4.

[0064] Table 4 Concrete Test Results

[0065]

[0066]

[0067] In Table 4, Comparative Example 2 is concrete prepared without the addition of ceramic slurry; Comparative Examples 3 and 9 are pure ceramic slurries without the addition of ceramic slurry dispersant, prepared by mixing ceramic slurry and water at a mass ratio of 60:40, resulting in a solid content of 60%; Examples 1-4 and Comparative Examples 4-8 and 10 are ceramic slurries with dispersant prepared in Examples 1-4, Comparative Examples 4-8 and 10 of Verification Experiment 1, respectively.

[0068] The test results above show that:

[0069] 1. As can be seen from Table 2:

[0070] 1) The initial fluidity of Examples 1-4 was significantly higher than that of Comparative Example 1 (ceramic slurry without dispersant); after 5 hours and 1 day, the fluidity of Examples 1-4 was still significantly higher than that of Comparative Example 1. This shows that adding a small amount of dispersant to the ceramic slurry can significantly increase its initial fluidity and exhibit significant dispersion retention, making it more beneficial for concrete production. 2) The initial fluidity of Examples 1-4 was significantly higher than that of Comparative Example 10 (where the added water-reducing component was only polycarboxylate superplasticizer B); after 5 hours and 1 day, the fluidity of Examples 1-4 was still significantly higher than that of Comparative Example 1.

[0071] 2. As can be seen from Table 4:

[0072] 1) In Comparative Example 2, no ceramic slurry was added to replace the fly ash in the concrete; Compared with Comparative Example 2, although the amount of admixture (water-reducing agent) used in the Example was reduced, it did not affect the initial slump and spread of the concrete. The 2-hour slump loss of the Example was not much different from that of Comparative Example 2.

[0073] 2) The concrete formula of Comparative Example 3 is the same as that of the Example, except that the pure ceramic slurry of Comparative Example 3 does not contain ceramic slurry dispersant, and the amount of water-reducing admixture is increased; Compared with Comparative Example 2, Comparative Example 2 achieves better initial slump and spread, which requires increasing the amount of water-reducing admixture, and the compressive strength is significantly lower than that of this Example, and the workability of the concrete of Comparative Example 3 is average.

[0074] 3) The concrete formula of Comparative Example 9 is the same as that of the Example, except that the pure ceramic slurry of Comparative Example 3 does not contain ceramic slurry dispersant; Compared with Comparative Example 2, Comparative Example 2 has a significantly larger water loss over time under the same water-reducing admixture dosage.

[0075] Based on the above test data, it can be seen that, when other material components are the same, in the various embodiments where the ceramic slurry dispersed by the dispersant of this application completely replaces fly ash, the early strength of the concrete is increased by approximately (2.0 to 3.0) MPa compared with Comparative Example 3. This is due to the early strength component in the ceramic slurry dispersant, which effectively improves the early strength of the concrete. Compared with Comparative Example 2, the increased mineral powder content in the embodiments ensures the later strength of the concrete.

[0076] 4) The difference between Comparative Example 4 and the Example is that the formulation of the dispersant is different. The amount of water-reducing component in the dispersant of Comparative Example 4 exceeds the limit of this application. Compared with the Example, the amount of water-reducing admixture in the concrete of Comparative Example 4 is reduced, which makes the concrete loss over time greater.

[0077] 5) The difference between Comparative Example 5 and the Example is that the formulation of its dispersant is different. The amount of early strength component in this comparative example is outside the scope of this application. Compared with the Example, the early strength of this comparative example is lower.

[0078] 6) The difference between Comparative Example 6 and the Example is that the formulation of its dispersant is different. The amount of early strength component in this comparative example is outside the scope of this application. Compared with the Example, the early strength of this comparative example is worse.

[0079] 7) The difference between Comparative Example 7 and the Example is that the formulation of its dispersant is different. The type of early strength component in this comparative example is different from that in the Example. Compared with the Example, the early strength effect of this comparative example is worse.

[0080] 8) The difference between Comparative Example 8 and the Example is that the formulation of its dispersant is different. The type of early strength component in this comparative example is different from that in the Example. Compared with the Example, the early strength effect of this comparative example is worse.

[0081] 10) The difference between Comparative Example 8 and the Example is that the water-reducing component added is only polycarboxylate superplasticizer B; compared with the Example, the concrete of this Comparative Example has greater water loss over time and worse early strength effect.

[0082] In summary, the data shows that the dispersant formulated according to the embodiments of this application can effectively disperse ceramic clay that has agglomerated due to collection, drying, and transportation, exhibiting high dispersion efficiency. The ceramic clay slurry obtained using this dispersant has good fluidity and is less prone to settling and clumping, resulting in better workability when producing concrete. The uniform ceramic clay slurry formed after dispersion can replace fly ash in C30 concrete mix proportions, and can also improve the early strength of concrete. Adjusting the mix proportions can increase the 28-day compressive strength of concrete by 1.6 MPa to 5.3 MPa. Furthermore, this dispersant can increase the dosage of ceramic clay in C30 concrete, increase the ceramic clay replacement ratio, and simultaneously improve the fluidity of concrete and address the issue of significant loss over time.

[0083] In summary, compared with the prior art, the present invention includes at least the following mechanisms, design concepts, and beneficial effects:

[0084] 1. Ceramic clay dispersant achieves the desired effect through the interaction of specific components—water-reducing components, retarding components, early-strength components, defoaming components, and water—in a specific ratio:

[0085] The water-reducing component used, polycarboxylate superplasticizer A, is a water-reducing agent synthesized from EPEG-type unsaturated polyether macromonomers. Its molecules have benzene rings and carboxyl or sulfonic acid groups in their side chains. The carboxyl or sulfonic acid groups provide electrostatic repulsion, which enhances the dispersion effect. The benzene rings make the side chains of the obtained polycarboxylate superplasticizer molecules more extended and the steric hindrance effect more obvious after they are adsorbed on the surface of ceramic clay particles.

[0086] The water-reducing component used, polycarboxylate superplasticizer B, is a water-reducing agent synthesized from HPEG-type unsaturated polyether macromonomers. The carboxyl functional groups on the molecular side chains provide electrostatic repulsion, which promotes the mutual dispersion of ceramic clay particles and the disintegration of the flocculated structure. However, compared with polycarboxylate superplasticizer A, polycarboxylate superplasticizer B has slightly weaker dispersion ability and dispersion retention performance.

[0087] The dispersant, formulated with the above-mentioned specific components in a specific ratio, can be used to disperse ceramic mud that has agglomerated due to collection, drying, and transportation. It has a high dispersion efficiency for ceramic mud. The uniform ceramic mud formed after dispersion can replace fly ash in C30 concrete mix proportions, and can also improve the early strength of concrete. Furthermore, this dispersant can increase the amount of ceramic mud used in C30 concrete, increase the ceramic mud replacement ratio, and at the same time improve the fluidity of concrete and address the problem of large loss over time.

[0088] 2. Technical effects of the present invention:

[0089] The dispersant formulated according to the embodiments of this application can be used to disperse ceramic clay that has agglomerated due to collection, drying and transportation, and has high dispersion efficiency for ceramic clay.

[0090] The ceramic slurry obtained by treatment with this dispersant has good fluidity and is not easy to settle and clump together, which makes the ceramic slurry more operable when producing concrete.

[0091] The uniform ceramic slurry formed after dispersion can replace fly ash in C30 concrete mix design and improve the early strength of concrete.

[0092] The ceramic mud dispersant of this application has a simple preparation process, and the method of using the dispersant to prepare ceramic mud is simple and easy to operate, with strong operability.

[0093] In summary, the ceramic mud dispersant provided by this invention can be used for ceramic mud, and has a high dispersion efficiency for ceramic mud; the ceramic mud slurry obtained by using this dispersant has good fluidity and is not easy to settle and clump, which makes the ceramic mud slurry more operable when producing concrete.

[0094] This dispersant is suitable for concrete mixed with ceramic clay. It has a significant effect on the dispersibility of ceramic clay, which can increase the amount of ceramic clay used in C30 concrete, increase the ceramic clay replacement ratio, improve the fluidity of concrete and reduce the large loss over time, and also improve the early strength of concrete. Thus, it solves the problem of low ceramic clay usage, effectively reduces the overall cost of concrete, improves the recycling of ceramic waste, and reduces environmental pollution.

[0095] It should be noted that:

[0096] In this article, “~” is used to represent the range of values, and the range of values ​​represented by this expression includes two endpoint values.

[0097] Ethylene glycol monovinyl polyethylene glycol ether is abbreviated as "EPEG", and allyl polyoxyethylene ether is abbreviated as "HPEG".

[0098] In addition to the actual selections shown in the specific embodiments above, the retarding component may be one or more combinations of phosphate, white sugar, sodium gluconate, maltodextrin, sodium phosphate, and sodium pyrophosphate, including but not limited to the white sugar and sodium gluconate selected as specified in the embodiments;

[0099] In addition to the actual selections shown in the specific embodiments above, the early strength component can be one or more combinations of triethanolamine, sodium sulfate, calcium formate, calcium chloride, potassium chloride, sodium nitrate, triethanolamine-chloride salt, and composite early strength agent, including but not limited to the actual selections shown in the embodiments above. The composite early strength agent is self-made and specifically adopts sodium nitrite-calcium chloride-triethanolamine.

[0100] In addition to the actual choices shown in the specific embodiments above, the components of the composite early strength agent may optionally include sodium nitrite, calcium chloride, and triethanolamine, with a mass ratio in the range of (1-1.5):(0.3-0.5):(0.3-0.5), including but not limited to the actual choices shown in the embodiments above.

[0101] In addition to the actual choices shown in the specific embodiments above, the defoaming component may be one or more combinations of polyether defoamers, organosilicon defoamers, mineral oil defoamers, and polyether-modified silicone defoamers, including but not limited to the actual choices shown in the embodiments above.

[0102] In summary, the specific parameters or some commonly used reagents or raw materials in the above embodiments are specific or preferred embodiments under the concept of the present invention, and not limitations thereof; those skilled in the art can make adaptive adjustments within the concept and protection scope of the present invention.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ceramic mud dispersant, characterized in that, It is composed of water-reducing components, retarding components, early-strength components, defoaming components, and water; by weight, the water-reducing components are 10-30 parts, the retarding components are 0.5-2 parts, the early-strength components are 1-4 parts, the defoaming components are 0.05-1 part, and the water is 63-88.45 parts. The water-reducing component includes polycarboxylate superplasticizer A or a combination of polycarboxylate superplasticizer A and polycarboxylate superplasticizer B; wherein, polycarboxylate superplasticizer A is a water-reducing agent copolymerized from EPEG-type unsaturated polyether macromonomers and unsaturated acid monomers, with a solid content of 40% to 50%; and polycarboxylate superplasticizer B is a water-reducing agent copolymerized from HPEG-type unsaturated polyether macromonomers and unsaturated acid monomers, with a solid content of 40% to 50%. The structural formula of the polycarboxylate superplasticizer A is as follows: Wherein, R1 is an alkylene group with 0 to 4 carbons, R2 is COOM or SO3M or PO3M2, M is H or an alkylene group with 0 to 4 carbons or Na, K, NH4, R3 is H or CH3, R4 is an alkylene group with 0 to 4 carbons, X is O or S, R5 is an alkylene group with 0 to 4 carbons, R6 is an alkylene group with 0 to 4 carbons, R7 is COOM or SO3M or PO3M2 or SO2NH; R8 is H or CH3; R9 is OC2H4; the ratio of a to d is 2.45:1, n=68, and the ratio of b, c to d is 4:1:24; The retarding component is one or more combinations of phosphate, white sugar, sodium gluconate, maltodextrin, sodium phosphate, and sodium pyrophosphate; the early strength component is one or more combinations of triethanolamine, sodium sulfate, calcium formate, calcium chloride, potassium chloride, sodium nitrate, triethanolamine-chloride, and composite early strength agent; the defoaming component is one or more combinations of polyether defoamer, organosilicon defoamer, mineral oil defoamer, and polyether-modified silicone defoamer. The composite early strength agent is sodium nitrite-calcium chloride-triethanolamine.

2. A method for preparing the ceramic mud dispersant as described in claim 1, characterized in that, Includes the following steps: Dissolve the early-strength component in the first portion of water according to the weight ratio to obtain a solution; Weigh out the water-reducing component, retarding component and defoaming component according to the weight ratio, add them to the solution, then add the second part of water, disperse evenly, and the ceramic mud dispersant is obtained. The total amount of water is the sum of the amount of water used in the first part and the amount of water used in the second part.

3. A ceramic slurry, characterized in that, By weight, it includes the following raw material components: 30-60 parts water, 40-70 parts ceramic clay, and 0.15-0.4 parts ceramic clay dispersant; Wherein, the ceramic mud dispersant is the ceramic mud dispersant as described in claim 1; or, the ceramic mud dispersant is prepared by the method for preparing the ceramic mud dispersant as described in claim 2.

4. A method for preparing ceramic slurry as described in claim 3, characterized in that, The preparation steps include the following: Add water to a container according to the weight ratio, and while stirring, add ceramic clay and ceramic clay dispersant. Stir until evenly mixed to obtain the ceramic clay slurry.

5. The application of a ceramic slurry in the preparation of concrete, characterized in that: Ceramic slurry is incorporated into the concrete mix to replace fly ash. The ceramic slurry is prepared using the ceramic slurry as described in claim 3, or by the method for preparing ceramic slurry as described in claim 4.

6. A type of concrete, characterized in that: Its raw material components include ceramic slurry; The ceramic slurry is prepared using the ceramic slurry as described in claim 3, or by the method for preparing ceramic slurry as described in claim 4.

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