Lightweight marble-imitated regenerated decorative brick and preparation method thereof

Abstract

The invention provides a lightweight marble-imitated regenerated decorative brick and a preparation method thereof, and relates to the technical field of building materials, and the lightweight marble-imitated regenerated decorative brick comprises the following components: raw material cement, construction waste aerated block regenerated aggregate, construction waste regenerated pigment and a reinforcing agent. The raw materials of the light marble-imitated regenerated decorative brick adopt the construction waste aerated block regenerated aggregate and the construction waste regenerated pigment, so that the light marble-imitated regenerated decorative brick is light in weight, the density of the product is reduced, meanwhile, resources are recycled, the ecological environment is protected, and the product cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a lightweight imitation marble regenerated decorative brick and a preparation method thereof. Background Art

[0002] Natural marble is a naturally formed mineral resource with a long formation process and limited reserves. With the continuous development of the construction industry and the decoration industry, the demand for natural marble continues to increase. Excessive mining will lead to resource depletion. In addition, a large amount of manpower, material resources and energy are required in the mining process of natural marble, and it will cause certain damage to the mountain, soil and vegetation. The price of natural marble is relatively high, especially for some high-quality varieties. The weight of natural marble is large, and the transportation and installation costs are high. Therefore, the prior art considers the preparation of imitation marble bricks. The prior art uses natural sand and gravel aggregates in the preparation of imitation marble bricks. The imitation marble bricks prepared by this technology have the following defects: 1. The use of natural sand and gravel aggregates has a large aggregate density and a high proportion in the bricks, resulting in a large overall weight of the bricks and inconvenient construction; 2. The double-layer structure, the imitation marble effect is only reflected in the surface layer, which is easy to fall off and expose the bottom, is not durable, and the surface layer is exposed after the surface layer falls off. The non-imitation marble surface of the base layer is exposed, and the decorative effect is poor; 3. The natural aggregates and natural colored sands used need to be obtained from mines, which will damage the ecological environment during the mining process. The price of natural aggregates is expensive, resulting in high cost of imitation marble brick products.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] One of the purposes of the present invention is to provide a lightweight imitation marble recycled decorative brick to at least solve one of the technical problems existing in the prior art. The lightweight imitation marble recycled decorative brick comprises the following components: raw material cement, recycled aggregate of waste aerated blocks from construction waste, recycled pigment from construction waste and reinforcing agent. The raw materials of the lightweight imitation marble recycled decorative brick are recycled aggregate of waste aerated blocks from construction waste and recycled pigment from construction waste, which is light in weight and reduces the density of the product. At the same time, resources are recycled, the ecological environment is protected and the product cost is reduced.

[0005] The second object of the present invention is to provide a method for preparing a lightweight imitation marble recycled decorative tile. The lightweight imitation marble recycled decorative tile is prepared by the method, and the product is formed throughout, and both the inside and outside have the same imitation marble effect.

[0006] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0007] In a first aspect, the present invention provides a lightweight imitation marble recycled decorative tile, comprising the following components: raw cement, recycled aggregate from waste aerated blocks of construction waste, recycled pigment from construction waste, and a reinforcing agent.

[0008] Furthermore, the lightweight imitation marble recycled decorative brick comprises the following components by mass percentage:

[0009] 20%-35% raw cement, 50%-60% construction waste aerated block recycled aggregate, 10%-30% construction waste recycled pigment and 5%-10% enhancer.

[0010] Further, the reinforcing agent includes at least one of acrylic emulsion and waterborne polyurethane;

[0011] Preferably, the concentration of the enhancer is 100%.

[0012] Furthermore, the raw cement includes white cement, preferably at least one of 52.5 grade white cement and 62.5 grade white cement.

[0013] Furthermore, the particle size of the construction waste aerated block recycled aggregate is 0-10 mm.

[0014] Further, the construction waste recycled pigment includes construction waste recycled black particles, preferably including at least one of waste black cable sheath recycled black particles and waste graphite insulation board recycled black particles;

[0015] Preferably, the particle size of the recycled black particles from construction waste is 0-5 mm.

[0016] In a second aspect, the present invention provides a method for preparing the lightweight imitation marble recycled decorative brick, comprising the following steps:

[0017] The raw material cement, the recycled aggregate of the waste aerated blocks from construction waste, the recycled pigment from construction waste and the reinforcing agent are mixed in a prescribed amount, and then molded and cured in sequence to obtain the finished product of the imitation marble recycled decorative brick.

[0018] Furthermore, the forming includes compression forming, and compression forming is preferably performed by vibration pressurization at room temperature.

[0019] Furthermore, the curing time is at least 28 days.

[0020] Further, after the curing, a waterproofing agent is applied to the formed decorative brick dry product;

[0021] Preferably, the waterproofing agent comprises at least one of waterborne polyurethane and acrylic emulsion;

[0022] Preferably, the concentration of the waterproofing agent is 40%-60%.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The lightweight imitation marble recycled decorative brick provided by the present invention has as its main raw material components construction waste and decoration waste aerated block recycled aggregate, construction waste recycled pigment, light weight, can reduce product density, realize lightweight product, and can realize resource recycling, protect ecological environment, and product cost is extremely low; the components of the lightweight imitation marble recycled decorative brick also include reinforcing agent, which can improve the bonding force between the raw materials construction waste aerated block recycled aggregate, construction waste recycled pigment and raw material cement, so that the overall strength of the product is improved, and the reinforcing agent also has an alkali-inhibiting effect, preventing the product from being contaminated due to alkali efflux, thereby affecting the appearance of imitation marble decoration effect, thereby improving the durability and stability of the product, and the reinforcing agent also has a waterproof effect. The density of the lightweight imitation marble recycled decorative brick is 1100-1300kg / m 3 , which is only about 50% of the density of natural marble (the density of natural marble is 2500-2800kg / m 3 ), compressive strength is 15MPa-30MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is an appearance diagram of the lightweight imitation marble recycled decorative brick prepared in Example 14 of the present invention;

[0027] Figure 2 This is a detailed view of the lightweight imitation marble recycled decorative brick prepared in Example 14 of the present invention. DETAILED DESCRIPTION

[0028] Unless otherwise defined herein, scientific and technical terms used in conjunction with the present invention shall have the meanings commonly understood by those of ordinary skill in the art. The meaning and scope of the terms should be clear, however, in the case of any potential ambiguity, the definitions provided herein take precedence over any dictionary or external definitions. In this application, unless otherwise stated, the use of "or" means "and / or". In addition, the use of the term "including" and other forms is non-limiting.

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The first aspect of the present invention provides a lightweight imitation marble recycled decorative brick, comprising the following components: raw material cement, recycled aggregate of waste aerated blocks from construction waste, recycled pigment from construction waste and a reinforcing agent.

[0031] In the present invention, the main raw material components of the lightweight imitation marble recycled decorative bricks include recycled aggregates of waste aerated blocks of construction waste and decoration waste, and recycled pigments of construction waste. The lightweight imitation marble recycled decorative bricks are light in weight, can reduce product density, achieve lightweight products, and can achieve resource recycling, protect the ecological environment, and have extremely low product cost. The components of the lightweight imitation marble recycled decorative bricks also include a reinforcing agent, which can improve the bonding force between the raw materials of recycled aggregates of waste aerated blocks of construction waste, recycled pigments of construction waste and raw material cement, thereby improving the overall strength of the product. At the same time, the reinforcing agent also has an alkali-inhibiting effect, preventing the product from causing appearance pollution due to alkali efflorescence, thereby affecting the appearance of imitation marble decorative effect, thereby improving the durability and stability of the product. At the same time, the reinforcing agent also has a waterproof effect.

[0032] In the present invention, the construction waste aerated block recycled aggregate refers to fine particles obtained by crushing, screening and other treatments of waste aerated concrete blocks; the construction waste recycled pigment refers to a pigment material extracted or processed from construction waste.

[0033] In some preferred embodiments, the lightweight imitation marble regenerated decorative tile comprises the following components by mass percentage:

[0034] 20%-35% raw cement, 50%-60% construction waste aerated block recycled aggregate, 10%-30% construction waste recycled pigment and 5%-10% enhancer.

[0035] In the present invention, the main materials of the product are recycled aggregates from waste aerated blocks of construction waste and decoration waste, and recycled pigments from construction waste. They are light in weight and high in proportion, which greatly reduces the density of the product.

[0036] Wherein, taking the total weight percentage of the lightweight imitation marble recycled decorative brick as 100%, the addition amount of the raw material cement is 20%-35%, for example, it can be 20%, 25%, 30%, 35%, etc.;

[0037] Wherein, taking the total weight percentage of the lightweight imitation marble recycled decorative brick as 100%, the added amount of the recycled aggregate of the construction waste aerated block is 50%-60%, for example, it can be 50%, 55%, 60%, etc.;

[0038] Wherein, taking the total weight percentage of the lightweight imitation marble recycled decorative brick as 100%, the added amount of the construction waste recycled pigment is 10%-30%, for example, it can be 10%, 15%, 20%, 25%, 30%, etc.;

[0039] Wherein, taking the total weight percentage of the lightweight imitation marble recycled decorative brick as 100%, the added amount of the reinforcing agent is 5%-10%, for example, it can be 5%, 6%, 7%, 8%, 9%, 10%, etc.

[0040] In some preferred embodiments, the reinforcing agent includes at least one of an acrylic emulsion and an aqueous polyurethane;

[0041] Preferably, the concentration of the reinforcing agent is 100%, and the acrylic emulsion and / or waterborne polyurethane can be used as an internal waterproofing agent, and the concentration is 100%, and it is colorless and transparent after curing;

[0042] In the present invention, the reinforcing agent acrylic emulsion and the reinforcing agent waterborne polyurethane have the functions of enhancing the mechanical properties of the product, enhancing the toughness of the product, alkali inhibition and waterproofing, etc. Specifically, the recycled aggregate of the waste aerated blocks of construction waste and the recycled pigment of construction waste are both recycled lightweight aggregates. The reinforcing agent makes the bonding between the lightweight aggregate and the raw material cement more firm, thereby enhancing the mechanical properties of the product; the reinforcing agent can enhance the toughness of the product, making the product less prone to cracking; the reinforcing agent prevents the product from causing appearance pollution due to alkali efflorescence, thereby affecting the appearance imitation marble decorative effect, thereby improving the durability and stability of the brick product; the reinforcing agent can also play the role of a waterproofing agent, as an internal waterproofing agent, to enhance the product's impermeability and weather resistance.

[0043] In some preferred embodiments, the raw cement includes white cement, preferably at least one of 52.5 grade white cement and 62.5 grade white cement.

[0044] In the present invention, white cement is white silicate cement.

[0045] In some preferred embodiments, the particle size of the construction waste aerated block recycled aggregate is 0-10 mm, for example, it can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0046] In the present invention, the waste aerated blocks in construction waste and decoration waste are prepared into 0-10 mm recycled lightweight aggregate by adopting crushing and screening processes.

[0047] In some preferred embodiments, the construction waste recycled pigment includes construction waste recycled black particles, preferably including at least one of waste black cable sheath recycled black particles and waste graphite insulation board recycled black particles;

[0048] In the present invention, the construction waste recycled pigment is recycled lightweight black particles, which can achieve lightweight and heat-insulating properties.

[0049] Preferably, the particle size of the recycled black particles from construction waste is 0-5 mm, for example, it can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc.

[0050] In the present invention, waste black cable sheaths and waste graphite insulation boards are prepared into 0-5 mm recycled light black particles by adopting sorting, crushing and cleaning processes.

[0051] The lightweight marble-like recycled decorative bricks provided by the present invention can still maintain a relatively light weight when they are large in size, save labor for manual handling, are convenient to construct, and have good thermal insulation properties; the raw materials used in the products are mainly recycled lightweight aggregates from waste aerated blocks of construction waste and decoration waste, recycled lightweight black particles from waste black cable sheaths and waste graphite insulation boards, which belongs to resource recycling, does not require the mining of natural sand and gravel, well protects the ecological environment and greatly reduces product production costs; the present invention uses construction waste and decoration waste to prepare lightweight marble-like recycled decorative bricks, and the recycled lightweight black particles have a good marble-like decorative appearance and a realistic texture.

[0052] The second aspect of the present invention provides a method for preparing the lightweight imitation marble recycled decorative brick, comprising the following steps:

[0053] The raw material cement, the recycled aggregate of the waste aerated blocks from construction waste, the recycled pigment from construction waste and the reinforcing agent are mixed in a prescribed amount, and then molded and cured in sequence to obtain the finished product of the imitation marble recycled decorative brick.

[0054] In the present invention, the product is formed throughout and processed in one piece, and both the inside and outside have the same imitation marble effect. Regardless of deep processing such as cutting, splitting, shot blasting and polishing, the decorative surface can maintain the imitation marble effect.

[0055] Furthermore, in the present invention, the finished product can be used directly in the wall decoration, or it can be used after deep processing such as cutting, splitting, shot blasting and polishing, so as to achieve the imitation marble decoration effect of the wall. In the wall construction, dry stacking, masonry, pasting and other construction methods can be used.

[0056] In some preferred embodiments, the molding comprises compression molding, and compression molding is preferably performed by vibration pressurization at room temperature.

[0057] In the present invention, various raw materials are uniformly mixed by a planetary mixer, and then transported to a block forming machine for vibration pressing and forming at room temperature.

[0058] In some preferred embodiments, the curing time is at least 28 days.

[0059] In some preferred embodiments, after the curing, a waterproofing agent is applied to the formed decorative tile dry product;

[0060] Preferably, the waterproofing agent comprises at least one of waterborne polyurethane and acrylic emulsion;

[0061] Preferably, the concentration of the waterproofing agent is 40%-60%;

[0062] Preferably, the concentration of the waterborne polyurethane is 40%-60%, for example, 40%, 45%, 50%, 55%, 60%, etc., and is colorless and transparent after curing;

[0063] Preferably, the concentration of the acrylic emulsion is 40%-60%, for example, 40%, 45%, 50%, 55%, 60%, etc., and it is colorless and transparent after curing.

[0064] In the present invention, a waterproofing agent is applied to the formed wet decorative tile product to form a dense waterproof layer on the product surface, reduce water penetration, and improve the anti-freezing and thawing performance of the product, so that it maintains a good appearance and structural integrity under various climatic conditions.

[0065] The lightweight imitation marble recycled decorative brick prepared by the preparation method of the present invention has a density of 1100-1300kg / m 3 , which is only about 50% of the density of natural marble (the density of natural marble is 2500-2800kg / m 3 ), the compressive strength is 15MPa-30MPa, and other indicators meet the requirements of GB / T24493 "Decorative Concrete Bricks" standard.

[0066] The present invention is further described below by way of examples. Unless otherwise specified, the materials in the examples are prepared according to existing methods or directly purchased from the market.

[0067] The construction waste aerated block recycled aggregates in the following embodiments and comparative examples are all prepared into 0-10 mm recycled lightweight aggregates through crushing and screening processes, and the waste black cable sheaths and waste graphite insulation board recycled black particles are all prepared into 0-5 mm recycled lightweight black particles through sorting, crushing and cleaning processes.

[0068] Example 1

[0069] This embodiment provides a lightweight imitation marble recycled decorative tile, which includes the following components by mass percentage:

[0070] 27% white silicate cement, 55% recycled aggregate from waste aerated blocks from construction waste, 8% acrylic emulsion (100% concentration), and the remainder is recycled black particles from waste black cable sheaths and waste graphite insulation boards.

[0071] Example 2

[0072] This embodiment provides a lightweight imitation marble recycled decorative tile, which is different from the embodiment 1 in that the reinforcing agent is water-based polyurethane;

[0073] The rest is consistent with Example 1.

[0074] Example 3

[0075] This embodiment provides a lightweight imitation marble recycled decorative tile, which includes the following components by mass percentage:

[0076] 20% white silicate cement, 60% recycled aggregate from waste aerated blocks from construction waste, 10% acrylic emulsion (100% concentration), and the remainder is recycled black particles from waste black cable sheaths and waste graphite insulation boards.

[0077] Example 4

[0078] This embodiment provides a lightweight imitation marble recycled decorative tile, which includes the following components by mass percentage:

[0079] 35% white silicate cement, 50% recycled aggregate from waste aerated blocks from construction waste, 5% acrylic emulsion (100% concentration), and the remainder is recycled black particles from waste black cable sheaths and waste graphite insulation boards.

[0080] Example 5

[0081] This embodiment provides a lightweight imitation marble recycled decorative tile, which is different from the embodiment 1 in that:

[0082] 50% of the recycled aggregate is from waste aerated blocks of construction waste, and the remainder is recycled black particles (15%) from waste black cable sheaths and waste graphite insulation boards; the rest is consistent with Example 1.

[0083] Example 6

[0084] This embodiment provides a lightweight imitation marble recycled decorative tile, which is different from the embodiment 1 in that:

[0085] 20% white silicate cement, the balance is waste black cable sheath and waste graphite insulation board recycled black particles (17%); the rest is consistent with Example 1.

[0086] Example 7

[0087] This embodiment provides a lightweight imitation marble recycled decorative tile, which is different from Example 1 in that the components include 4% by mass of acrylic emulsion, the remainder is waste black cable sheaths and waste graphite insulation board recycled black particles (14%), and the rest is consistent with Example 1.

[0088] Example 8

[0089] This embodiment provides a lightweight imitation marble recycled decorative tile, which is different from the embodiment 1 in that the components include 11% acrylic emulsion and 54% recycled aggregate of construction waste aerated blocks, and the rest is the same as the embodiment 1.

[0090] Examples 9-16

[0091] This embodiment provides a method for preparing a lightweight imitation marble recycled decorative tile, comprising the following steps:

[0092] The raw material components in Examples 1-8 were weighed respectively according to the formula amounts, and the raw material components were added to a planetary mixer and mixed with an appropriate amount of water to be fully mixed. The mixture was then transported to a block forming machine and compacted by vibration and pressurization at room temperature. The mixture was then demolded to obtain a wet product of a lightweight imitation marble recycled decorative tile. The wet product was subjected to standard curing (wherein the curing standard is a temperature of 20±2°C and a relative humidity of ≥95%) for 28 days, and then the dry product after curing was immersed in a waterproofing agent water-based polyurethane (the concentration of the water-based polyurethane is 50%, diluted with water) for about 30s-60s, taken out, and naturally dried to obtain a finished lightweight imitation marble recycled decorative tile.

[0093] in, Figure 1 This is the appearance of the lightweight imitation marble recycled decorative brick prepared in Example 14; Figure 2 This is a detail picture of the lightweight marble-like recycled decorative brick prepared in Example 14. It can be seen that the recycled lightweight black particles have a good marble-like decorative appearance and a realistic texture.

[0094] Embodiment 17

[0095] This embodiment provides a method for preparing a lightweight imitation marble recycled decorative tile, which is different from Embodiment 9 in that the concentration of the waterborne polyurethane is 40%.

[0096] Embodiment 18

[0097] This embodiment provides a method for preparing a lightweight imitation marble recycled decorative tile, which is different from Embodiment 9 in that the concentration of the waterborne polyurethane is 60%.

[0098] Embodiment 19

[0099] This embodiment provides a method for preparing a lightweight imitation marble recycled decorative tile, which is different from Embodiment 9 in that the waterproofing agent uses an acrylic emulsion with a concentration of 50%.

[0100] Comparative Example 1

[0101] This comparative example provides a lightweight imitation marble recycled decorative brick, which is different from Example 1 in that 0-10 mm natural graded sand and gravel are used as aggregate to replace construction waste aerated block recycled aggregate, and the rest is consistent with Example 1.

[0102] Comparative Example 2

[0103] This comparative example provides a method for preparing a lightweight imitation marble recycled decorative tile, which is prepared according to the raw material components in the formula amount in comparative example 1, and the preparation method is consistent with that in Example 9.

[0104] Test Case

[0105] Test samples: lightweight imitation marble recycled decorative tiles prepared in Examples 9-19 and lightweight imitation marble recycled decorative tiles prepared in Comparative Example 2.

[0106] Test method: The density test method is carried out in accordance with GB / T4111, the compressive strength test method is carried out in accordance with Appendix A of GB / T24493, and the water absorption test method is carried out in accordance with GB / T4111.

[0107] The test results are shown in Table 1.

[0108] Table 1

[0109]

[0110] According to Table 1, compared with Example 2, Example 9 uses aerated block recycled aggregate as the main aggregate, which greatly reduces the product density and thus reduces the product weight; Example 9 uses acrylic emulsion as an internal reinforcing agent and waterborne polyurethane as an external waterproofing agent, and Example 10 uses waterborne polyurethane as an internal reinforcing agent and an external waterproofing agent. It can be seen from the test results of Examples 9 and 10 that when acrylic emulsion is used as an internal reinforcing agent and waterborne polyurethane is used as an external waterproofing agent, the comprehensive performance of the product is stronger; compared with Example 9, the amount of aerated block recycled aggregate is reduced in the product formula of Example 13, and the product density is slightly increased; compared with Example 9, the amount of cement is reduced in the product formula of Example 14, and the product strength is reduced; compared with Example 9, Examples 15-16 reduce and increase the amount of acrylic emulsion, respectively, and the comprehensive performance of the products of Examples 15-16 is not as good as that of Example 9. It can be seen that the strength, density, and water absorption of the product component mix ratio of Example 9 are all at the middle value, and the product has better comprehensive performance, and meets the national standard requirements under the condition of slight fluctuations in the actual production mix ratio.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 lightweight imitation marble recycled decorative tile, characterized in that: The invention comprises the following components: raw material cement, recycled aggregate of waste aerated blocks from construction waste, recycled pigment from construction waste and reinforcing agent.

2. The lightweight imitation marble recycled decorative tile according to claim 1 is characterized in that: The lightweight imitation marble regenerated decorative brick comprises the following components by mass percentage: 20%-35% raw cement, 50%-60% construction waste aerated block recycled aggregate, 10%-30% construction waste recycled pigment and 5%-10% enhancer.

3. The lightweight imitation marble recycled decorative tile according to claim 1, characterized in that: The reinforcing agent includes at least one of acrylic emulsion and waterborne polyurethane; Preferably, the concentration of the enhancer is 100%.

4. The lightweight imitation marble recycled decorative tile according to claim 1, characterized in that: The raw material cement includes white cement, preferably includes at least one of 52.5 grade white cement and 62.5 grade white cement.

5. The lightweight imitation marble recycled decorative tile according to claim 1, characterized in that: The particle size of the construction waste aerated block recycled aggregate is 0-10 mm.

6. The lightweight imitation marble recycled decorative tile according to claim 1, characterized in that: The construction waste recycled pigment includes construction waste recycled black particles, preferably includes at least one of waste black cable sheath recycled black particles and waste graphite insulation board recycled black particles; Preferably, the particle size of the recycled black particles from construction waste is 0-5 mm.

7. The method for preparing the lightweight imitation marble recycled decorative tile according to any one of claims 1 to 6, characterized in that: The following steps are involved: The raw material cement, the recycled aggregate of the waste aerated blocks from construction waste, the recycled pigment from construction waste and the reinforcing agent are mixed in a prescribed amount, and then molded and cured in sequence to obtain the finished product of the imitation marble recycled decorative brick.

8. The preparation method according to claim 7, characterized in that: The molding includes compression molding, and compression molding is preferably performed by vibration pressurization at room temperature.

9. The preparation method according to claim 7, characterized in that: The curing time is at least 28 days.

10. The preparation method according to claim 7, characterized in that: After the curing, applying a waterproofing agent to the formed decorative brick dry product; Preferably, the waterproofing agent comprises at least one of waterborne polyurethane and acrylic emulsion; Preferably, the concentration of the waterproofing agent is 40%-60%.

Images