CN111302713A - Durable environment-friendly building block brick and preparation method thereof - Google Patents
Durable environment-friendly building block brick and preparation method thereof Download PDFInfo
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- CN111302713A CN111302713A CN202010181309.0A CN202010181309A CN111302713A CN 111302713 A CN111302713 A CN 111302713A CN 202010181309 A CN202010181309 A CN 202010181309A CN 111302713 A CN111302713 A CN 111302713A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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Abstract
The invention discloses a durable environment-friendly building block brick and a preparation method thereof, wherein the durable environment-friendly building block brick is prepared from the following raw materials in parts by weight: 3.5 to 5.5 portions of cement, 5.5 to 8.5 portions of modified montmorillonite, 8.0 to 12.0 portions of ceramsite, 6.0 to 9.0 portions of waste stone slag, 6.0 to 8.0 portions of kaolin, 3.0 to 4.0 portions of mica, 1.0 to 3.0 portions of glass fiber, 0.8 to 1.8 portions of polyurethane fiber, 4.5 to 8.5 portions of nano silicon dioxide, 2.2 to 4.2 portions of polyacrylamide and 1.2 to 1.8 portions of glycol. The durable environment-friendly building block brick provided by the invention has the advantages that the traditional formula is improved, the modified montmorillonite, the glass fiber, the polyester fiber and the like are added, the components act together and supplement each other, the wear resistance and the compression resistance of the building block brick can be obviously improved, the use safety and the economic value of the building block brick are improved, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of building blocks, in particular to a durable environment-friendly building block brick and a preparation method thereof.
Background
Most of the existing building block bricks are made of ABS plastics through processes such as high-temperature forming, pressing and the like, the used plastic raw materials easily volatilize toxic gases at high temperature and harm human health, and some manufacturers use inferior plastics or toxic chemical substances for reducing cost and seriously harm the health of users.
On the other hand, the building block made of plastic materials has low durability, short service life and relatively limited application field. Meanwhile, the building block brick made of plastic materials has lower recycling value after being used, is not easy to degrade after being discarded at will, and has more serious pollution to the environment.
Therefore, how to prepare the durable environment-friendly building block brick is important for improving the durability of the building block brick so as to prolong the service life, not harming the body health of a user and not polluting the environment.
Chinese patent CN106836868A discloses a novel environmental-friendly compact wood brick and a preparation method thereof, which is composed of clay, limestone, cement, gypsum, polylactic acid, a heat-resistant nucleating agent, plant starch, plant short fibers and inorganic materials. Batching according to the ratio, tentatively smashing, finely smashing and sieving, according to the mass ratio of smashed raw materials to water of 1: 0.8 adding warm water of 62-70 ℃ and stirring into pug, storing and aging, primary refining and secondary refining, adding a leakage-proof agent, extruding and forming to form a brick blank, removing moisture and drying, and roasting by adopting a method of taking internal combustion as a main part and external combustion as an auxiliary part, thereby solving the problems that the existing building block brick does not use environment-friendly materials, is harmful to human bodies and has short service life.
Chinese patent CN106988181A discloses a luminous building block and a preparation method thereof, wherein the components of the luminous building block are composed of cement, coarse and fine aggregates, sand, passivated glass, a fixing agent and a proper amount of water, the passivated glass is thin glass with soft refraction light or coated glass with bright reflection light, the preparation method comprises the steps of weighing the components according to the parts by weight, stirring by a stirrer, pouring into a building block forming die to obtain the building block, coating a layer of cement on the upper surface of the obtained building block, then laying the passivated glass, and coating the fixing agent after rolling to obtain the luminous building block. The structure is simple, the use is cupper, the bricks can be installed according to the matching degree, the defect of single function of the traditional bricks is overcome, and the manufacturing materials are energy-saving and environment-friendly.
Disclosure of Invention
Aiming at the problems, the invention provides a durable environment-friendly building block brick and a preparation method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: a durable environment-friendly building block brick is composed of the following raw materials in parts by weight: 3.5 to 5.5 portions of cement, 5.5 to 8.5 portions of modified montmorillonite, 8.0 to 12.0 portions of ceramsite, 6.0 to 9.0 portions of waste stone slag, 6.0 to 8.0 portions of kaolin, 3.0 to 4.0 portions of mica, 1.0 to 3.0 portions of glass fiber, 0.8 to 1.8 portions of polyurethane fiber, 4.5 to 8.5 portions of nano silicon dioxide, 2.2 to 4.2 portions of polyacrylamide and 1.2 to 1.8 portions of glycol.
Further, the durable environment-friendly building block brick is prepared from the following raw materials in parts by weight: 4.0 to 5.0 portions of cement, 6.5 to 7.5 portions of modified montmorillonite, 9.0 to 11.0 portions of ceramsite, 7.0 to 8.0 portions of waste stone residue, 6.5 to 7.5 portions of kaolin, 3.2 to 3.8 portions of mica, 1.5 to 2.5 portions of glass fiber, 1.0 to 1.6 portions of polyurethane fiber, 5.5 to 7.5 portions of nano silicon dioxide, 2.5 to 3.8 portions of polyacrylamide and 1.4 to 1.6 portions of glycol.
Furthermore, the ceramsite is recycled building ceramsite.
The durable environment-friendly building block brick has the advantages that the modified montmorillonite is added into the raw materials of the durable environment-friendly building block brick, the hardness and the wear resistance of the building block brick can be improved, the service life is prolonged, the recycled building ceramsite and waste stone slag are added, the mechanical strength of the building block brick is enriched, the application range is expanded, the kaolin and the mica are added to stabilize the properties of the building block brick, the impact strength is enhanced, the glass fiber and the polyurethane fiber are added to improve the wear resistance and the compressive strength of the building block brick, the building block brick is suitable for being used in various environments, the nano silicon dioxide is added, the surface energy is high, the bonding strength and the stability among all components are enhanced, and the compatibility and the system dispersion degree of the components are enhanced by adding the polyacrylamide and the.
Further, the preparation process of the modified montmorillonite comprises the following steps: preparing 0.5-1.5 mol/L aluminum sulfate solution, adding montmorillonite crushed to 30-50 meshes, grinding and dispersing for 40-60 minutes, filtering, and drying filter residues to obtain the modified montmorillonite. The montmorillonite is modified to be dispersed into thinner single crystal chips, and the surface activity of the montmorillonite is improved.
Furthermore, the mass ratio of the aluminum sulfate solution to the montmorillonite is 2.5-3.5: 1.
furthermore, the drying specifically comprises: the mixture is primarily dried for 30 minutes at the temperature of 115-135 ℃ and then dried for 60-120 minutes at the temperature of 105-115 ℃.
The invention also aims to provide a preparation method of the durable environment-friendly building block brick, which comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 60-80 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 5-10 min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 30-60 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 10-15 min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 3-5 hours, injecting the pug into a building block brick mold to prepare a building block brick blank, and finally roasting the building block brick blank to obtain the durable environment-friendly building block brick.
Furthermore, in the step C, the amount of the added water is 0.65 to 0.75 time of the sum of the mass of the first mixture and the mass of the second mixture.
Further, in the step C, the aging temperature is 38-44 ℃.
Further, in the step C, the roasting specifically comprises: firstly, the raw materials are initially sintered for 40 to 50 minutes at the temperature of 230 to 260 ℃, then are sintered for 4 to 6 hours at the temperature of 320 to 380 ℃, and finally are insulated for 60 to 90 minutes at the temperature of 280 to 320 ℃.
The invention has the advantages that:
(1) the durable environment-friendly building block brick improves the traditional formula, adds the modified montmorillonite, the glass fiber, the polyester fiber and the like, has the combined action of all the components, supplements each other, can obviously improve the wear resistance and the compression resistance of the building block brick, improves the use safety and the economic value of the building block brick, and prolongs the service life;
(2) according to the durable environment-friendly building block brick, the recycled building ceramsite and the waste stone slag are added into the raw materials, so that the waste can be recycled, the environmental pollution and the ecological pressure are reduced, the raw material cost of the building block brick can be reduced, and the cost investment is reduced;
(3) the durable environment-friendly building block brick prepared by the invention is low in cost, environment-friendly, high in use safety and suitable for popularization.
Drawings
In order to more clearly illustrate the improvement of the durable environment-friendly building block prepared in the embodiments 1 to 5 of the present invention, the following test results of the experimental examples on the performance of the durable environment-friendly building block prepared in the embodiments 1 to 5 of the present invention are shown in the figure chart. In the drawings:
FIG. 1 is a comparison of the compression resistance of the durable environment-friendly building block bricks prepared in examples 1 to 5 of the present invention.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Example 1
Durable environmental protection building blocks brick
The composition is characterized by comprising the following raw materials in parts by weight: 3.5kg of cement, 5.5kg of modified montmorillonite, 8.0kg of ceramsite, 6.0kg of waste stone slag, 6.0kg of kaolin, 3.0kg of mica, 1.0kg of glass fiber, 0.8kg of polyurethane fiber, 4.5kg of nano silicon dioxide, 2.2kg of polyacrylamide and 1.2kg of ethylene glycol; wherein the ceramsite is recycled building ceramsite.
The preparation process of the modified montmorillonite comprises the following steps: preparing 0.5mol/L aluminum sulfate solution, adding montmorillonite crushed to 30 meshes, grinding and dispersing for 40 minutes, filtering, primarily drying filter residue for 30 minutes at the temperature of 115 ℃, and then drying for 60 minutes at the temperature of 105 ℃ to obtain the modified montmorillonite; wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 2.5: 1.
the preparation method comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 60 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 5min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 30 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 10min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 3 hours at the temperature of 38 ℃, injecting the pug into a building block brick mold to prepare a building block brick blank, primarily burning the building block brick blank for 40 minutes at the temperature of 230 ℃, roasting for 4 hours at the temperature of 320 ℃, and finally preserving heat for 60 minutes at the temperature of 280 ℃ to obtain the durable environment-friendly building block brick.
In the above, the amount of water added was 0.65 times the sum of the amounts of the first mixture and the second mixture.
The compressive strength of the durable environment-friendly building block brick prepared by the embodiment is 52.1 MPa; the durability is good, and the service life is long.
Example 2
Durable environmental protection building blocks brick
The composition is characterized by comprising the following raw materials in parts by weight: 5.5kg of cement, 8.5kg of modified montmorillonite, 12.0kg of ceramsite, 9.0kg of waste stone slag, 8.0kg of kaolin, 4.0kg of mica, 3.0kg of glass fiber, 1.8kg of polyurethane fiber, 8.5kg of nano silicon dioxide, 4.2kg of polyacrylamide and 1.8kg of ethylene glycol; wherein the ceramsite is recycled building ceramsite.
The preparation process of the modified montmorillonite comprises the following steps: preparing 1.5mol/L aluminum sulfate solution, adding montmorillonite crushed to 50 meshes, grinding and dispersing for 60 minutes, filtering, primarily drying filter residue for 30 minutes at the temperature of 135 ℃, and then drying for 120 minutes at the temperature of 115 ℃ to obtain the modified montmorillonite; wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 3.5: 1.
the preparation method comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 80 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 10min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 60 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 15min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 5 hours at the temperature of 44 ℃, injecting the pug into a building block brick mold to prepare a building block brick blank, and finally, firstly, primarily burning the building block brick blank for 50 minutes at the temperature of 260 ℃, then, roasting for 6 hours at the temperature of 380 ℃, and finally, preserving the heat for 90 minutes at the temperature of 320 ℃ to obtain the durable environment-friendly building block brick.
In the above, the amount of water added was 0.75 times the sum of the amounts of the first mixture and the second mixture.
The compressive strength of the durable environment-friendly building block brick prepared by the embodiment is 51.9 MPa; the durability is good, and the service life is long.
Example 3
Durable environmental protection building blocks brick
The composition is characterized by comprising the following raw materials in parts by weight: 4.0kg of cement, 6.5kg of modified montmorillonite, 9.0kg of ceramsite, 7.0kg of waste stone slag, 6.5kg of kaolin, 3.2kg of mica, 1.5kg of glass fiber, 1.0kg of polyurethane fiber, 5.5kg of nano silicon dioxide, 2.5kg of polyacrylamide and 1.4kg of ethylene glycol; wherein the ceramsite is recycled building ceramsite.
The preparation process of the modified montmorillonite comprises the following steps: preparing 0.8mol/L aluminum sulfate solution, adding montmorillonite crushed to 50 meshes, grinding and dispersing for 45 minutes, filtering, primarily drying filter residue for 30 minutes at 120 ℃, and then drying for 70 minutes at 108 ℃ to obtain the modified montmorillonite; wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 2.7: 1.
the preparation method comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 80 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 8min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 40 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 11min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 3.5 hours at the temperature of 39 ℃, injecting the pug into a building block brick mold to prepare a building block brick blank, and finally, firstly, primarily burning the building block brick blank for 42 minutes at the temperature of 240 ℃, then, roasting for 4.5 hours at the temperature of 330 ℃, and finally, preserving heat for 70 minutes at the temperature of 290 ℃ to obtain the durable environment-friendly building block brick.
In the above, the amount of water added was 0.68 times the sum of the amounts of the first mixture and the second mixture.
The compressive strength of the durable environment-friendly building block brick prepared by the embodiment is 52.0 MPa; the durability is good, and the service life is long.
Example 4
Durable environmental protection building blocks brick
The composition is characterized by comprising the following raw materials in parts by weight: 5.0kg of cement, 7.5kg of modified montmorillonite, 11.0kg of ceramsite, 8.0kg of waste stone residue, 7.5kg of kaolin, 3.8kg of mica, 2.5kg of glass fiber, 1.6kg of polyurethane fiber, 7.5kg of nano silicon dioxide, 3.8kg of polyacrylamide and 1.6kg of ethylene glycol; wherein the ceramsite is recycled building ceramsite.
The preparation process of the modified montmorillonite comprises the following steps: preparing 1.3mol/L aluminum sulfate solution, adding montmorillonite crushed to 30 meshes, grinding and dispersing for 55 minutes, filtering, primarily drying filter residue for 30 minutes at the temperature of 130 ℃, and then drying for 110 minutes at the temperature of 112 ℃ to obtain the modified montmorillonite; wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 3.3: 1.
the preparation method comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 60 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 9min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 50 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 14min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 4.5 hours at the temperature of 43 ℃, injecting the pug into a building block brick mold to prepare a building block brick blank, and finally, primarily burning the building block brick blank at the temperature of 250 ℃ for 48 minutes, then roasting at the temperature of 370 ℃ for 5.5 hours, and finally, preserving heat at the temperature of 310 ℃ for 80 minutes to obtain the durable environment-friendly building block brick.
In the above, the amount of water added was 0.72 times the sum of the amounts of the first mixture and the second mixture.
The compressive strength of the durable environment-friendly building block brick prepared by the embodiment is 51.8 MPa; the durability is good, and the service life is long.
Example 5
Durable environmental protection building blocks brick
The composition is characterized by comprising the following raw materials in parts by weight: 4.5kg of cement, 7.0kg of modified montmorillonite, 10.0kg of ceramsite, 7.5kg of waste stone slag, 7.0kg of kaolin, 3.5kg of mica, 2.0kg of glass fiber, 1.3kg of polyurethane fiber, 6.5kg of nano silicon dioxide, 3.2kg of polyacrylamide and 1.5kg of ethylene glycol; wherein the ceramsite is recycled building ceramsite.
The preparation process of the modified montmorillonite comprises the following steps: preparing 1.0mol/L aluminum sulfate solution, adding montmorillonite crushed to 40 meshes, grinding and dispersing for 50 minutes, filtering, primarily drying filter residue for 30 minutes at the temperature of 125 ℃, and then drying for 90 minutes at the temperature of 110 ℃ to obtain the modified montmorillonite; wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 3.0: 1.
the preparation method comprises the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 70 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 8min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 40 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 13min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 4 hours at 42 ℃, injecting the pug into a building block brick mold to prepare a building block brick blank, primarily burning the building block brick blank for 45 minutes at 245 ℃, then roasting for 5 hours at 350 ℃, and finally preserving heat for 75 minutes at 300 ℃ to obtain the durable environment-friendly building block brick.
In the above, the amount of water added was 0.70 times the sum of the amounts of the first mixture and the second mixture.
The compressive strength of the durable environment-friendly building block brick prepared by the embodiment is 52.3 MPa; the durability is good, and the service life is long.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The durable environment-friendly building block brick is characterized by comprising the following raw materials in parts by weight: 3.5 to 5.5 portions of cement, 5.5 to 8.5 portions of modified montmorillonite, 8.0 to 12.0 portions of ceramsite, 6.0 to 9.0 portions of waste stone slag, 6.0 to 8.0 portions of kaolin, 3.0 to 4.0 portions of mica, 1.0 to 3.0 portions of glass fiber, 0.8 to 1.8 portions of polyurethane fiber, 4.5 to 8.5 portions of nano silicon dioxide, 2.2 to 4.2 portions of polyacrylamide and 1.2 to 1.8 portions of glycol.
2. The durable environment-friendly building block as claimed in claim 1, wherein the durable environment-friendly building block is composed of the following raw materials in parts by weight: 4.0 to 5.0 portions of cement, 6.5 to 7.5 portions of modified montmorillonite, 9.0 to 11.0 portions of ceramsite, 7.0 to 8.0 portions of waste stone residue, 6.5 to 7.5 portions of kaolin, 3.2 to 3.8 portions of mica, 1.5 to 2.5 portions of glass fiber, 1.0 to 1.6 portions of polyurethane fiber, 5.5 to 7.5 portions of nano silicon dioxide, 2.5 to 3.8 portions of polyacrylamide and 1.4 to 1.6 portions of glycol.
3. The durable, environmentally friendly building block of claim 1, wherein the ceramic particles are recycled building ceramic particles.
4. The durable environment-friendly building block brick as claimed in claim 1, wherein the modified montmorillonite is prepared by the following steps: preparing 0.5-1.5 mol/L aluminum sulfate solution, adding montmorillonite crushed to 30-50 meshes, grinding and dispersing for 40-60 minutes, filtering, and drying filter residues to obtain the modified montmorillonite.
5. The durable environment-friendly building block brick as claimed in claim 4, wherein the mass ratio of the aluminum sulfate solution to the montmorillonite is 2.5-3.5: 1.
6. the durable environment-friendly building block brick as claimed in claim 4, wherein the drying is: the mixture is primarily dried for 30 minutes at the temperature of 115-135 ℃ and then dried for 60-120 minutes at the temperature of 105-115 ℃.
7. A method for preparing the durable environment-friendly building block brick according to any one of claims 1 to 6, comprising the following steps:
step A, removing residues of the ceramsite and the waste stone slag in parts by weight respectively, crushing the ceramsite and the waste stone slag into 60-80 meshes, mixing the ceramsite and the waste stone slag, adding the kaolin, the mica, the cement and the modified montmorillonite in parts by weight, and stirring and mixing the mixture for 5-10 min to obtain a first mixture for later use;
b, respectively crushing the glass fiber and the polyurethane fiber in parts by weight to 30-60 meshes, then mixing, adding the polyacrylamide, the nano silicon dioxide and the ethylene glycol in parts by weight, and stirring and mixing for 10-15 min to obtain a second mixture for later use;
and step C, mixing the first mixture obtained in the step A and the second mixture obtained in the step B, adding water to prepare pug, aging for 3-5 hours, injecting the pug into a building block brick mold to prepare a building block brick blank, and finally roasting the building block brick blank to obtain the durable environment-friendly building block brick.
8. The method according to claim 7, wherein in the step C, the amount of the added water is 0.65 to 0.75 times the sum of the amounts of the first mixture and the second mixture.
9. The method according to claim 7, wherein the aging temperature in the step C is 38 to 44 ℃.
10. The preparation method according to claim 7, wherein in the step C, the roasting is specifically as follows: firstly, the raw materials are initially sintered for 40 to 50 minutes at the temperature of 230 to 260 ℃, then are sintered for 4 to 6 hours at the temperature of 320 to 380 ℃, and finally are insulated for 60 to 90 minutes at the temperature of 280 to 320 ℃.
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