CN112047724A - Preparation method of multilayer composite structure ceramic water permeable brick and ceramic water permeable brick - Google Patents

Preparation method of multilayer composite structure ceramic water permeable brick and ceramic water permeable brick Download PDF

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CN112047724A
CN112047724A CN202010999214.XA CN202010999214A CN112047724A CN 112047724 A CN112047724 A CN 112047724A CN 202010999214 A CN202010999214 A CN 202010999214A CN 112047724 A CN112047724 A CN 112047724A
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permeable brick
aggregate
water permeable
composite structure
ceramic water
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卢俊杰
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Abstract

The invention relates to a preparation method of a ceramic water permeable brick with a multilayer composite structure and the ceramic water permeable brick, wherein the preparation method comprises the following steps: 1) crushing and screening the ceramic waste to obtain coarse aggregate, medium aggregate and fine aggregate with different granularities; 2) mixing and ball-milling waste glass powder, kaolin, magnesium oxide, limestone and boric acid, smelting, and performing water quenching, grinding and sieving to obtain binder powder; 3) spraying a water glass wetting agent on the middle aggregate, stirring and mixing, adding the binder powder, rolling and pelletizing to obtain a package material; 4) mixing the coarse aggregate and the package material to obtain a bottom layer material; mixing the fine aggregate with a water glass wetting agent and a binder powder to obtain a surface material; 5) distributing the bottom layer material, the wrapping material and the surface layer material from bottom to top in a layering manner, pressing and molding, and sintering to obtain the material. The ceramic water permeable brick is connected with the surface layer and the bottom layer through the middle layer, the aggregate particle size and the pores are gradually transited, the strength is high, the binding force is strong, the ceramic water permeable brick can be repeatedly cleaned by a high-pressure water gun without damage and cracking, the water permeability is good, the ceramic water permeable brick is easy to recover, and the service life is long.

Description

Preparation method of multilayer composite structure ceramic water permeable brick and ceramic water permeable brick
Technical Field
The invention belongs to the technical field of ceramic water permeable bricks, and particularly relates to a preparation method of a multilayer composite structure ceramic water permeable brick and the multilayer composite structure ceramic water permeable brick prepared by the same.
Background
In the existing urban construction, open public areas such as sidewalks, parking lots, park galleries, municipal squares, building front squares, building inter-building squares and the like are mostly paved by waterproof hardening materials such as concrete bricks or ceramic bricks, so that natural rainfall cannot timely permeate underground to supplement underground water, and accumulated water is easily formed on the ground, so that the potential safety hazard is caused by wet and slippery road surfaces; on the other hand, natural rainfall needs to be discharged through urban drainage facilities, when runoff generated by strong rainfall exceeds the flood discharge capacity of the drainage facilities, urban waterlogging can be caused due to untimely drainage, and life and property safety of people is threatened. One of the methods for reducing the runoff of the urban ground is to reduce the hardening rate of the urban ground, increase the permeable area of the urban ground, allow more rainfall to permeate into the ground, supplement the urban ground water and improve the utilization rate of the rainwater; but also furthest lightens the pressure of urban drainage and avoids urban waterlogging.
In order to maintain the functions of the public areas such as pedestrians, traveling vehicles, parking vehicles, daily activities of people and the like, the water permeable facing bricks laid on the ground are required to have good strength, compression resistance and shock resistance. The ceramic water permeable brick is a ground paving material which is formed by using a ceramic material as a raw material and a functional additive as an auxiliary material through blank forming and high-temperature sintering, has certain water permeability and mechanical strength, and is long in service life and good in wear resistance, and is an ideal choice.
At present, the preparation method of the ceramic water permeable brick can be divided into two types: firstly, a pore-forming agent is added to manufacture the permeable brick, and the pore-forming agent burns at high temperature or releases gas to form a pore structure in a blank body, so that the water permeability is improved; secondly, the permeable brick is prepared by a particle stacking method, aggregates with certain particles are mixed with a high-temperature binder to be molded into a blank, and a pore structure is formed by high-temperature sintering. The two methods are integrated forming processes, the sizes of internal pores are relatively uniform, and the ceramic water permeable brick is used as a pavement paving material and has serious problems in the using process: the hole of the ceramic water permeable brick is easy to be blocked, the plug is usually from the soil on the ground (such as green belts, greenbelts and flower beds), construction waste and dust on construction sites, silt and dirt brought by people and vehicles, haze and dust in the air and the like, the plug blocks the hole structure along with the rainwater permeating the inside of the ceramic water permeable brick, so that the water permeability is reduced, even the plug is dead, the water permeable brick loses the water permeable function, the later cleaning and regeneration difficulty is higher, the ceramic water permeable brick is short in service life, high in cost and difficult to maintain. In the prior art, the ceramic water permeable brick is made into a surface layer and bottom layer composite structure only by adjusting the particle size of aggregate, the surface layer is a compact glaze layer or a coloring layer, and is thin and brittle, and is easy to damage and crack after being rolled by stress; the surface layer is compounded with the bottom layer through pressing or curtain coating, the interlayer bonding force is weak, and the surface layer is easy to peel and fall off after being collided by stress.
Disclosure of Invention
The invention aims to provide a preparation method of a ceramic water permeable brick with a multilayer composite structure.
The second purpose of the invention is to provide a multilayer composite structure ceramic water permeable brick prepared by the preparation method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a multilayer composite structure ceramic water permeable brick comprises the following steps:
1) crushing and screening the ceramic waste to obtain coarse aggregate with the granularity of 5-10 meshes, medium aggregate with the granularity of 10-20 meshes and fine aggregate with the granularity of 20-60 meshes;
2) crushing waste glass, mixing with kaolin, magnesium oxide, limestone and boric acid, ball milling, heating the obtained powder to 1200-1250 ℃, smelting to prepare a melt, and performing water quenching, grinding and sieving to obtain binder powder; the raw materials are as follows by weight: 60-65 parts of waste glass, 9-12 parts of kaolin, 1.0-3.0 parts of magnesium oxide, 4-7 parts of limestone and 20-24 parts of boric acid;
3) spraying a water glass wetting agent into the medium aggregate, stirring and mixing, adding the binder powder after the surface of the aggregate is wetted, rolling and pelletizing to enable the binder powder to be adhered and coated on the surface of the aggregate, and drying to obtain a coating material;
4) uniformly mixing the coarse aggregate and the covering material according to the mass ratio of 1:0.4-0.6 to obtain a bottom layer material; uniformly mixing the fine aggregate with a water glass wetting agent and a binder powder to obtain a surface material;
5) the obtained bottom layer material, the wrapping material and the surface layer material are distributed in a layered manner from bottom to top corresponding to the bottom layer, the middle layer and the surface layer, pressed and molded, and then sintered for 0.5-2h at 850-900 ℃ to obtain the material.
In the step 2), the heating rate is 4-8 ℃/min; the heat preservation time of the smelting is 0.5-2.5 h;
in the step 2), the sieving refers to sieving with a 200-400-mesh sieve.
In the step 3) and the step 4), the usage amount of the binder is 6-15% of the mass of the aggregate corresponding to each layer.
Furthermore, in the bottom layer material, the using amount of the binder powder is 8-10% of the total aggregate mass of the corresponding layer; in the coating material corresponding to the middle layer, the using amount of the binder powder is 10-12% of the total aggregate mass of the corresponding layer; in the surface material, the dosage of the binder powder is 12-15% of the total aggregate mass of the corresponding layer.
In steps 3) and 4), the amount of the water glass wetting agent is Na2O·nSiO2Calculated by not less than 12 percent of the mass of the corresponding binder powder. Preferably, the water glass wetting agent is used in an amount of Na2O·nSiO2Calculated as 12-30% of the mass of the corresponding binder powder. The water glass wetting agent is a water glass solution with the modulus n of 2.0-2.6 and the mass concentration of 12-30%.
In the step 5), the forming pressure of the compression forming is 15-25 MPa.
In the step 5), the early-stage heating rate of the sintering is 2-10 ℃/min.
The thickness ratio of the middle surface layer, the middle layer and the bottom layer of the multilayer composite structure ceramic water permeable brick obtained in the step 5) is 1:1-3: 3-10. The total thickness of the multilayer composite structure ceramic water permeable brick is 2-7 cm.
A multilayer composite structure ceramic water permeable brick prepared by the preparation method.
The technical scheme has the following advantages that:
1. the main raw materials are ceramic waste and waste glass, which belong to solid waste; the ceramic water permeable brick prepared by the method changes waste into valuable, saves resources to the maximum extent, and reduces the cost.
2. Waste glass is used as raw material to prepare binder, and kaolin, magnesium oxide, limestone and boric acid are used as auxiliary materials to supplement Al2O3、SiO2MgO, CaO and B2O3The components and the content of the binder are reasonably adjusted to obtain the low-temperature high-strength performance; impurities are removed through high-temperature smelting and water quenching, and the obtained binder has the advantages of uniform mixing of all components, good stability, lower secondary sintering temperature and higher bonding strength.
3. The water glass is used as a wetting agent and a low-temperature binder, after the surface of the aggregate is wetted, the binder powder is adhered and wrapped on the surface of the aggregate by a low-temperature ball-making method to prepare a wrapping material, and on one hand, the water glass wetting agent is spread on the surface of the aggregate, so that the binder powder can be adhered on the surface of the aggregate, and the binder powder is uniformly dispersed; na in water glass on the other hand2O and SiO2As a part of the high-temperature binder, Na is used to bond together with a binder formed from waste glass or the like at the time of post-sintering2O as a fluxing agent to lower the sintering temperature, SiO2Is a main framework material of the adhesive, does not introduce impurities, and is beneficial to improving the adhesive strength and the mechanical property.
4. Obtaining a multilayer structure by a layered cloth mode, wherein a surface layer, a middle layer and a bottom layer are sequentially arranged from top to bottom; the bottom layer is formed by mixing coarse aggregate and a coating material, and the coarse aggregate and the middle aggregate are bonded together by a bonding agent on the surface of the coating material through high-temperature sintering, so that the strength is high and the pores are large; the middle layer is formed by high-temperature sintering of a coating material, has medium pores and belongs to a transition layer, the binding agent adhered to the surface of the coating material increases the bonding area and the sintering site with the bottom layer and the surface layer, the bonding strength of the bottom layer and the surface layer is improved, the support effect on the surface layer is strong, the surface layer is not easy to damage and crack due to stress rolling, and is not easy to peel and fall off due to positive and negative impact of a high-pressure water gun; the surface layer is prepared by mixing fine aggregate, a water glass wetting agent and binder powder, has compact structure and fine pores, plays a role in protecting the permeable brick, has high strength and wear resistance, ensures that a blockage does not easily enter the brick body, and has long service life.
5. The pores of the obtained multilayer composite structure ceramic water permeable brick are gradually increased from the surface layer to the bottom layer, the surface layer has small pores and a compact structure, and the materials which are easy to cause blockage such as large-particle dust and the like which permeate water are not easy to enter, so that the brick body is not easy to block. If the surface layer is blocked, a high-pressure water gun can be adopted to flush from the front surface (the surface layer) or from the back surface (the bottom layer) during maintenance, and the water permeability can be recovered; this pottery brick that permeates water passes through intermediate level and connects surface course and bottom, and aggregate particle diameter and hole transition gradually, and intensity is high, and the cohesion is strong, can wash repeatedly and the brick body keeps intact with the high-pressure squirt, and is not damaged, not ftracture, and the water permeability is good and easily resumes, effective increase of service life.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The main raw materials of the specific embodiment are all from solid wastes, and the used ceramic wastes comprise waste bricks and unqualified products generated in the production process of the ceramic refractory bricks, and recycled waste ceramic refractory bricks. The used waste glass comprises waste products and leftover materials generated in the production process of a glass factory and recycled daily waste glass; the chemical composition of the used waste glass mainly comprises the following components (in mass content): SiO 22 71.59％、Na2O 10.11％、CaO 9.17％、MgO 5.52％、Al2O3 1.62％、Fe2O30.83％、K20.58 percent of O. The ceramic waste and the waste glass are cleaned and dried before use.
Example 1
The multilayer composite structure ceramic water permeable brick of the embodiment is prepared by the following method:
1) crushing and screening the ceramic waste to obtain coarse aggregate with the granularity of 5-10 meshes, medium aggregate with the granularity of 10-20 meshes and fine aggregate with the granularity of 20-60 meshes;
2) crushing waste glass, mixing the crushed waste glass with kaolin, magnesium oxide, limestone and boric acid, ball-milling the mixture until the mixture is sieved by a 100-mesh sieve to obtain powder, putting the powder into a crucible, putting the crucible into a high-temperature furnace, heating the crucible to 1200 ℃ at the heating rate of 5 ℃/min, smelting the powder for 1.5h to prepare a melt, quenching the melt with water, drying and grinding the melt, and sieving the melt by a 300-mesh sieve to obtain binder powder; the raw materials are as follows by weight: 60 parts of waste glass, 10.5 parts of kaolin, 2.2 parts of magnesium oxide, 7.0 parts of limestone and 21.5 parts of boric acid;
3) the sodium silicate is prepared into a sodium silicate solution with the modulus of 2.6 and the mass concentration of 20% by using NaOH and water, and the sodium silicate solution is used as a sodium silicate wetting agent; putting the medium aggregate into a pelletizer, spraying a water glass wetting agent inwards, stirring and mixing, after wetting the surface of the aggregate, adding the binder powder obtained in the step 2), rolling and pelletizing to enable the binder powder to be adhered and wrapped on the surface of the aggregate, and drying to respectively prepare a wrapping material A and a wrapping material B;
in the package material A, the dosage of the binder powder is 27 percent of the mass of the medium aggregate (9 percent of the total mass of the aggregate in the bottom material), and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 20% of the mass of the corresponding binder powder;
in the package material B, the dosage of the binder powder is 11 percent of the mass of the medium aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 20% of the mass of the corresponding binder powder;
4) uniformly mixing the coarse aggregate and the package material A according to the mass ratio of 1:0.5 to obtain a bottom layer material; uniformly mixing the fine aggregate with a water glass wetting agent, adding a binder powder, and uniformly mixing to obtain a surface material; the dosage of the binder powder in the surface material is 13 percent of the mass of the fine aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 20% of the mass of the corresponding binder powder;
5) and (3) distributing the obtained bottom layer material, the obtained coating material B and the obtained surface layer material from bottom to top in a layered manner corresponding to the bottom layer, the middle layer and the surface layer, pressing and forming under the pressure of 20MPa, then placing in a kiln, heating to 900 ℃ at the speed of 4 ℃/min, and carrying out heat preservation and sintering for 0.5h to obtain the multilayer composite structure ceramic water permeable brick with the thickness ratio of the surface layer, the middle layer and the bottom layer of 1:2:7 and the total thickness of 5 cm.
With reference to GB/T25993--2cm/s, compressive strength of 80.3MPa, capability of bearing positive and negative flushing of a high-pressure water gun (5-8MPa), complete brick body, no peeling, no damage and no cracking of surface layer. Spreading ceramic waste powder with particle size of 60-300 meshes on the surface layer of the obtained multilayer composite structure ceramic water permeable brick, and repeatedly rolling to make the pores of the surface layer blocked by the powder simulate the blocking condition of the water permeable brick until the water permeability coefficient is reduced to 0.1 × 10-2The water permeability coefficient recovery rate reaches 97.1 percent, the brick body is complete, the surface layer has no peeling, damage or cracking phenomenon, and the brick can be repeatedly cleaned and used.
Example 2
The multilayer composite structure ceramic water permeable brick of the embodiment is prepared by the following method:
1) crushing and screening the ceramic waste to obtain coarse aggregate with the granularity of 5-10 meshes, medium aggregate with the granularity of 10-20 meshes and fine aggregate with the granularity of 20-60 meshes;
2) crushing waste glass, mixing the crushed waste glass with kaolin, magnesium oxide, limestone and boric acid, ball-milling the mixture until the mixture is sieved by a 100-mesh sieve to obtain powder, putting the powder into a crucible, putting the crucible into a high-temperature furnace, heating the crucible to 1230 ℃ at the heating rate of 5 ℃/min, smelting the powder for 1.0h to prepare a melt, quenching the melt with water, drying and grinding the melt, and sieving the melt by a 300-mesh sieve to obtain binder powder; the raw materials are as follows by weight: 63 parts of waste glass, 11 parts of kaolin, 2.0 parts of magnesium oxide, 6.5 parts of limestone and 22 parts of boric acid;
3) the sodium silicate is prepared into a sodium silicate solution with the modulus of 2.3 and the mass concentration of 18% by using NaOH and water, and the sodium silicate solution is used as a sodium silicate wetting agent; putting the medium aggregate into a pelletizer, spraying a water glass wetting agent inwards, stirring and mixing, after wetting the surface of the aggregate, adding the binder powder obtained in the step 2), rolling and pelletizing to enable the binder powder to be adhered and wrapped on the surface of the aggregate, and drying to respectively prepare a wrapping material A and a wrapping material B;
in the package material A, the dosage of the binder powder is 30 percent of the mass of the medium aggregate (10 percent of the total mass of the aggregate in the bottom material), and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 18 percent of the mass of the corresponding binder powder;
in the package material B, the dosage of the binder powder is 12 percent of the mass of the medium aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 18 percent of the mass of the corresponding binder powder;
4) uniformly mixing the coarse aggregate and the covering material according to the mass ratio of 1:0.5 to obtain a bottom layer material; uniformly mixing the fine aggregate with a water glass wetting agent, adding a binder powder, and uniformly mixing to obtain a surface material; the dosage of the binder powder in the surface material is 14 percent of the mass of the fine aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 18 percent of the mass of the corresponding binder powder;
5) and (3) distributing the obtained bottom layer material, the obtained coating material B and the obtained surface layer material from bottom to top in a layered manner corresponding to the bottom layer, the middle layer and the surface layer, pressing and forming under the pressure of 20MPa, then placing in a kiln, heating to 850 ℃ at the speed of 4 ℃/min, and carrying out heat preservation and sintering for 1h to obtain the multilayer composite structure ceramic water permeable brick with the thickness ratio of the surface layer, the middle layer and the bottom layer of 1:2:7 and the total thickness of 5 cm.
The detected water permeability coefficient of the ceramic water permeable brick is 12.9 multiplied by 10-2cm/s, compressive strength of 82.1MPa, capability of bearing forward and backward washing by a high-pressure water gun (5-8MPa), complete brick body, no peeling, no damage and no cracking of surface layer. Simulating the blockage of the permeable brick in the same way until the permeability coefficient is reduced to 0.1 multiplied by 10-2The water permeability coefficient recovery rate reaches 96.5 percent, the brick body is complete, the surface layer has no peeling, damage or cracking phenomenon, and the brick can be repeatedly cleaned and used.
Example 3
The multilayer composite structure ceramic water permeable brick of the embodiment is prepared by the following method:
1) crushing and screening the ceramic waste to obtain coarse aggregate with the granularity of 5-10 meshes, medium aggregate with the granularity of 10-20 meshes and fine aggregate with the granularity of 20-60 meshes;
2) crushing waste glass, mixing with kaolin, magnesium oxide, limestone and boric acid, ball-milling until the mixture is sieved by a 100-mesh sieve to obtain powder, placing the powder in a crucible, putting the crucible into a high-temperature furnace, heating the crucible to 1250 ℃ at the heating rate of 5 ℃/min, smelting for 1.0h to prepare a melt, quenching with water, drying, grinding, and sieving by a 300-mesh sieve to obtain binder powder; the raw materials are as follows by weight: 65 parts of waste glass, 10.5 parts of kaolin, 1.8 parts of magnesium oxide, 6.0 parts of limestone and 22.5 parts of boric acid;
3) the method is characterized in that the sodium silicate is prepared into a sodium silicate solution with the modulus of 2.1 and the mass concentration of 17% by using NaOH and water, and the sodium silicate solution is used as a sodium silicate wetting agent; putting the medium aggregate into a pelletizer, spraying a water glass wetting agent inwards, stirring and mixing, after wetting the surface of the aggregate, adding the binder powder obtained in the step 2), rolling and pelletizing to enable the binder powder to be adhered and wrapped on the surface of the aggregate, and drying to respectively prepare a wrapping material A and a wrapping material B;
in the package material A, the dosage of the binder powder is 24 percent of the mass of the medium aggregate (8 percent of the total mass of the aggregate in the bottom material), and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 17% of the mass of the corresponding binder powder;
in the package material B, the dosage of the binder powder is 10 percent of the mass of the medium aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 17% of the mass of the corresponding binder powder;
4) uniformly mixing the coarse aggregate and the covering material according to the mass ratio of 1:0.5 to obtain a bottom layer material; uniformly mixing the fine aggregate with a water glass wetting agent, adding a binder powder, and uniformly mixing to obtain a surface material; the dosage of the binder powder in the surface material is 12 percent of the mass of the fine aggregate, and the dosage of the water glass wetting agent is Na2O·nSiO2Calculated as 17% of the mass of the corresponding binder powder;
5) and (3) distributing the obtained bottom layer material, the obtained coating material B and the obtained surface layer material from bottom to top in a layered manner corresponding to the bottom layer, the middle layer and the surface layer, pressing and forming under the pressure of 20MPa, then placing in a kiln, heating to 880 ℃ at the speed of 4 ℃/min, and carrying out heat preservation and sintering for 1h to obtain the multilayer composite structure ceramic water permeable brick with the thickness ratio of the surface layer, the middle layer and the bottom layer of 1:2:7 and the total thickness of 5 cm.
The detected water permeability coefficient of the ceramic water permeable brick is 14.1 multiplied by 10-2cm/s, compressive strength of 77.4MPa, capability of bearing positive and negative flushing of a high-pressure water gun (5-8MPa), complete brick body, no peeling, no damage and no cracking of surface layer. Simulating the blockage of the permeable brick in the same way until the permeability coefficient is reduced to 0.1 multiplied by 10-2Below cm/s, washing with high pressure water gun, recovering water permeability coefficient of 97.9%, making brick body complete, no peeling, no damage and no cracking on surface layer, and repeatedly cleaningThe application is as follows.

Claims (9)

1. A preparation method of a multilayer composite structure ceramic water permeable brick is characterized by comprising the following steps: the method comprises the following steps:
1) crushing and screening the ceramic waste to obtain coarse aggregate with the granularity of 5-10 meshes, medium aggregate with the granularity of 10-20 meshes and fine aggregate with the granularity of 20-60 meshes;
2) crushing waste glass, mixing with kaolin, magnesium oxide, limestone and boric acid, ball milling, heating the obtained powder to 1200-1250 ℃, smelting to prepare a melt, and performing water quenching, grinding and sieving to obtain binder powder; the raw materials are as follows by weight: 60-65 parts of waste glass, 9-12 parts of kaolin, 1.0-3.0 parts of magnesium oxide, 4-7 parts of limestone and 20-24 parts of boric acid;
3) spraying a water glass wetting agent into the medium aggregate, stirring and mixing, adding the binder powder after the surface of the aggregate is wetted, rolling and pelletizing to enable the binder powder to be adhered and coated on the surface of the aggregate, and drying to obtain a coating material;
4) uniformly mixing the coarse aggregate and the covering material according to the mass ratio of 1:0.4-0.6 to obtain a bottom layer material; uniformly mixing the fine aggregate with a water glass wetting agent and a binder powder to obtain a surface material;
5) and (3) distributing the obtained bottom layer material, the wrapping material and the surface layer material in a layering manner from bottom to top corresponding to the bottom layer, the middle layer and the surface layer, pressing and forming, and sintering at 850-900 ℃ for 0.5-2h to obtain the multilayer composite structure ceramic water permeable brick.
2. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 1, characterized in that: in the step 2), the heating rate is 4-8 ℃/min; the heat preservation time of the smelting is 0.5-2.5 h.
3. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 1, characterized in that: in the step 2), the sieving refers to sieving with a 200-400-mesh sieve.
4. The multilayer composite structure of claim 1The preparation method of the ceramic water permeable brick is characterized by comprising the following steps: in steps 3) and 4), the amount of the water glass wetting agent is Na2O·nSiO2Calculated by not less than 12 percent of the mass of the corresponding binder powder.
5. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 1, characterized in that: in the steps 3) and 4), the using amount of the binder powder is 6-15% of the total aggregate mass corresponding to each layer.
6. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 5, wherein the method comprises the following steps: in the bottom layer material, the using amount of the binder powder is 8% -10% of the total aggregate of the corresponding layer; in the coating material corresponding to the middle layer, the dosage of the binder powder is 10-12% of the total aggregate of the corresponding layer; in the surface material, the dosage of the binder powder is 12-15% of the total aggregate of the corresponding layer.
7. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 1, characterized in that: in the step 5), the forming pressure of the compression forming is 15-25 MPa.
8. The method for preparing the multilayer composite structure ceramic water permeable brick according to claim 1, characterized in that: the thickness ratio of the middle surface layer, the middle layer and the bottom layer of the multilayer composite structure ceramic water permeable brick obtained in the step 5) is 1:1-3: 3-10.
9. A multilayer composite structure ceramic water permeable brick prepared by the preparation method according to any one of claims 1 to 8.
CN202010999214.XA 2020-09-22 2020-09-22 Preparation method of multilayer composite structure ceramic water permeable brick and ceramic water permeable brick Withdrawn CN112047724A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115724685A (en) * 2022-12-14 2023-03-03 萍乡学院 Method for preparing water permeable brick by using ceramic solid waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115724685A (en) * 2022-12-14 2023-03-03 萍乡学院 Method for preparing water permeable brick by using ceramic solid waste
CN115724685B (en) * 2022-12-14 2023-05-16 萍乡学院 Method for preparing water permeable bricks by utilizing ceramic solid wastes

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