CN114349530A - Water permeable brick based on waste stone powder and preparation process thereof - Google Patents
Water permeable brick based on waste stone powder and preparation process thereof Download PDFInfo
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- CN114349530A CN114349530A CN202210104758.4A CN202210104758A CN114349530A CN 114349530 A CN114349530 A CN 114349530A CN 202210104758 A CN202210104758 A CN 202210104758A CN 114349530 A CN114349530 A CN 114349530A
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Abstract
The invention provides a water permeable brick based on waste stone powder and a preparation process thereof, wherein the water permeable brick comprises the following raw materials in parts by weight: 100-500 parts of waste stone powder, 50-100 parts of vermiculite composite material, 100-300 parts of portland cement, 80-100 parts of fly ash, 40-80 parts of binder, 28-35 parts of ceramsite and 30-50 parts of waste porcelain granules, and is formed by sintering at high pressure and high temperature, wherein the compressive strength of the waste stone powder is more than 50MPa, and the breaking strength of the waste stone powder is more than 9.0 MPa; has good water permeability and excellent safety and skid resistance, and the skid resistance value of the water-based anti-skid rubber reaches above BPN 70.
Description
Technical Field
The invention relates to the field of building materials, in particular to a water permeable brick based on waste stone powder and a preparation process thereof.
Background
The stone powder is a regional natural raw material, and has the advantages of wide distribution range, low production and processing cost and wide research and application. Along with the rapid development of infrastructure construction in civil engineering, water conservancy and traffic industries in recent years, the construction scale and the field are rapidly expanded, machine-made sand gradually replaces natural sand to become main stream trend of sand for construction, the utilization problem of rock powder is increasingly obvious, and in addition, traditional high-quality mineral admixtures such as slag, fly ash and the like are increasingly in short supply, so that the research and application of rock powder becomes an inevitable trend.
In recent years, in order to meet the requirements of energy conservation and environmental protection, the technology of recycling stone powder waste is greatly developed, which is a necessary development trend. At present, the research on the recycling technology of stone powder wastes mainly focuses on the aspects of preparing the waste stone powder into building materials and the like. Although researches show that the waste stone powder can replace part of additives to improve the mechanical property of the polymer after being activated or subjected to particle fine or ultra-fine treatment, the application research of the waste stone powder in the modification of the polymer still has more problems at present. For medium and small stone processing enterprises, the comprehensive recycling pressure of waste stone powder is not high, but in the long run, the development of related recycling technology is still necessary.
The stone powder as fine aggregate has been widely applied to the aspects of concrete and other building materials with low additional value, but the application research on the aspect of building materials with high additional value is not much; the research on applying stone dust waste to polymer modification is much and little. By reviewing and analyzing the current research situation of the comprehensive recycling technology of the stone powder waste, the comprehensive recycling technology of the stone powder waste still has great problems and available space. The novel brick material is a great trend to replace solid clay bricks, the stone powder brick prepared by mixing stone powder serving as a main raw material is a typical representative of novel wall materials, the excellent performances of the novel wall materials in various aspects such as environmental protection, no damage to cultivated land, energy conservation and the like are more remarkable, and the novel brick material is the best choice for urban and rural buildings. The stone powder is applied to the water permeable brick, which is beneficial to environmental protection, but the prepared water permeable brick has lower performance, poor flexural strength and compressive strength, low water permeability and obvious cracks in the sintering process.
Disclosure of Invention
Therefore, the invention provides a water permeable brick based on waste stone powder and a preparation process thereof, and solves the problems.
The technical scheme of the invention is realized as follows: a permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 100-500 parts of waste stone powder, 50-100 parts of vermiculite composite material, 100-300 parts of portland cement, 80-100 parts of fly ash, 40-80 parts of binder, 28-35 parts of ceramsite and 30-50 parts of waste porcelain granules, wherein the binder is polyether polyol resin powder and/or water-soluble urea phenolic resin powder, and the polyether polyol resin powder and/or water-soluble urea phenolic resin powder react with aggregate particles in the firing process to generate a high-temperature binder in situ, so that the particles of the aggregate of the water permeable brick are bonded together.
Further explaining, the permeable brick based on the waste stone powder comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of binder, 30 parts of ceramsite and 40 parts of broken waste porcelain particles, wherein the binder is methyl hydroxyethyl cellulose and/or methyl hydroxypropyl cellulose.
Further, the vermiculite composite material is prepared by washing vermiculite with deionized water for 2-4 times, drying at 150-200 ℃ for 2-6 hours, crushing, sieving with a 120-200 mesh sieve, adding an alkaline substance for activation, refluxing at 20-40 ℃ for 3-10 hours, washing with deionized water to be neutral, drying in an oven at 150-200 ℃ for 2-6 hours, and taking out.
Further, the alkaline substance is any one of sodium hydroxide, calcium hydroxide, barium hydroxide and potassium hydroxide.
Further, the preparation process of the water permeable brick based on the waste stone powder is characterized by comprising the following steps: the method comprises the following steps:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 1-3mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring to obtain a mixed material A;
s3, adding a binder into the mixture A, and stirring uniformly while adding to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred to obtain a mixed material C;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
s6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 60-100 MPa, controlling the sintering temperature rise rate to be 4-8 ℃/min, sintering to 1000-1400 ℃, then preserving heat for 30-40 min, and then cooling, wherein the cooling rate is 5-8 ℃/min, so as to obtain a finished product of the water permeable brick.
Further, the stirring speed of the S2 is 400-600 rpm, and the stirring time is 15-40 min.
Further, the stirring speed of the S3 is 700-1000 rpm, and the stirring time is 8-15 min.
Further, the stirring speed of the S4 is 300-500 rpm, and the stirring time is 15-40 min.
Compared with the prior art, the invention has the beneficial effects that:
the water permeable brick is formed by sintering at high pressure and high temperature, the strength of the water permeable brick is obviously higher than that of other water permeable paving materials, the compressive strength of the water permeable brick reaches more than 50Mpa, and the flexural strength of the water permeable brick is more than 9.0 Mpa; have good water permeability, can permeate the rainwater fast, when raining, surface gathered water can permeate the underground rapidly, keep the groundwater level, and when the weather is hot, can evaporate back again in the atmosphere, make the air keep certain humidity, be favorable to the protection of soil and vegetation, have excellent safe antiskid nature, its non-skid value reaches more than BPN70, in addition its good water permeability, make the road of mating formation ponding not easily, rainy and snowy day is difficult for skidding, promotes pedestrian's security and travelling comfort.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
Example 1
A permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 100 parts of waste stone powder, 50 parts of vermiculite composite material, 100 parts of portland cement, 80 parts of fly ash, 40 parts of water-soluble urea phenolic resin powder, 28 parts of ceramsite and 30 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 2 times, drying the vermiculite at 150 ℃ for 2 hours, crushing the vermiculite, sieving the vermiculite with a 120-mesh sieve, adding calcium hydroxide for activation, refluxing the vermiculite at 20 ℃ for 3 hours, washing the vermiculite with deionized water to be neutral, drying the vermiculite in an oven at 150 ℃ for 2 hours, and taking out the vermiculite composite material;
example 2
A permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 500 parts of waste stone powder, 100 parts of vermiculite composite material, 300 parts of portland cement, 100 parts of fly ash, 80 parts of water-soluble urea phenolic resin powder, 35 parts of ceramsite and 50 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 4 times, drying for 6 hours at 200 ℃, crushing, sieving with a 200-mesh sieve, adding sodium hydroxide for activation, refluxing for 10 hours at 40 ℃, washing with deionized water to neutrality, drying for 6 hours at 200 ℃ in an oven, and taking out to obtain the vermiculite composite material;
example 3
A permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of polyether polyol resin powder, 30 parts of ceramsite and 40 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable bricks of the above embodiments 1 to 3 adopt the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 500rpm for 30min to obtain a mixed material A;
s3, adding a binder into the mixture A, stirring uniformly while adding, wherein the stirring speed is 900rpm, and the stirring time is 12min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 400rpm, and the stirring time is 30min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 80MPa, controlling the sintering temperature rise rate to be 6 ℃/min, keeping the temperature for 35min after sintering to 1200 ℃, and then cooling, wherein the cooling rate is 7 ℃/min, so as to obtain the finished product of the water permeable brick.
Example 4
A permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of polyether polyol resin powder, 30 parts of ceramsite and 40 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable brick adopts the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 400rpm for 15min to obtain a mixed material A;
s3, adding a binder into the mixture A, stirring uniformly while adding, wherein the stirring speed is 700rpm, and the stirring time is 8min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 300rpm, and the stirring time is 15min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 60MPa, controlling the sintering temperature rise rate to be 4 ℃/min, keeping the temperature for 30min after sintering to 1000 ℃, and then cooling, wherein the cooling rate is 5 ℃/min, so as to obtain the finished product of the water permeable brick.
Example 5
A permeable brick based on waste stone powder comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of polyether polyol resin powder, 30 parts of ceramsite and 40 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable brick adopts the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 600rpm for 40min to obtain a mixed material A;
s3, adding a binder into the mixture A, and stirring uniformly while adding, wherein the stirring speed is 1000rpm, and the stirring time is 15min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 500rpm, and the stirring time is 40min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 100MPa, controlling the sintering temperature rise rate to be 8 ℃/min, sintering to 1400 ℃, keeping the temperature for 40min, and then cooling, wherein the cooling rate is 8 ℃/min, so as to obtain the finished product of the water permeable brick.
Comparative example 1
The difference between the comparative example and the example 3 is that the permeable brick based on the waste stone powder comprises the following raw materials in parts by weight: 600 parts of waste stone powder, 40 parts of vermiculite composite material, 350 parts of portland cement, 120 parts of fly ash, 20 parts of polyether polyol resin powder, 20 parts of ceramsite and 320 parts of waste porcelain granules; the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable brick adopts the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 500rpm for 30min to obtain a mixed material A;
s3, adding a binder into the mixture A, stirring uniformly while adding, wherein the stirring speed is 900rpm, and the stirring time is 12min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 400rpm, and the stirring time is 30min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 80MPa, controlling the sintering temperature rise rate to be 6 ℃/min, keeping the temperature for 35min after sintering to 1200 ℃, and then cooling, wherein the cooling rate is 7 ℃/min, so as to obtain the finished product of the water permeable brick.
Comparative example 2
The difference between the comparative example and the example 3 is that the raw materials of the water permeable brick do not contain vermiculite composite material, and specifically the water permeable brick comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 200 parts of Portland cement, 90 parts of fly ash, 60 parts of polyether polyol resin powder, 30 parts of ceramsite and 40 parts of waste porcelain granules, wherein the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, then crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable brick adopts the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 500rpm for 30min to obtain a mixed material A;
s3, adding a binder into the mixture A, stirring uniformly while adding, wherein the stirring speed is 900rpm, and the stirring time is 12min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 400rpm, and the stirring time is 30min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 80MPa, controlling the sintering temperature rise rate to be 6 ℃/min, keeping the temperature for 35min after sintering to 1200 ℃, and then cooling, wherein the cooling rate is 7 ℃/min, so as to obtain the finished product of the water permeable brick.
Comparative example 3
The difference between the comparative example and the example 3 is that the pervious brick binder is methyl hydroxypropyl cellulose with the same amount, specifically 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of methyl hydroxypropyl cellulose, 30 parts of ceramsite and 40 parts of waste porcelain granules;
the vermiculite composite material is prepared by washing vermiculite with deionized water for 3 times, drying at 180 ℃ for 4 hours, crushing, sieving with a 160-mesh sieve, adding an alkaline substance for activation, refluxing at 30 ℃ for 7 hours, washing with deionized water to be neutral, drying in an oven at 180 ℃ for 4 hours, and taking out to obtain the vermiculite composite material;
the water permeable brick adopts the following preparation method:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 2mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring at the stirring speed of 500rpm for 30min to obtain a mixed material A;
s3, adding a binder into the mixture A, stirring uniformly while adding, wherein the stirring speed is 900rpm, and the stirring time is 12min, so as to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred, wherein the stirring speed is 400rpm, and the stirring time is 30min, so that a mixed material C is obtained;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
and S6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 80MPa, controlling the sintering temperature rise rate to be 6 ℃/min, keeping the temperature for 35min after sintering to 1200 ℃, and then cooling, wherein the cooling rate is 7 ℃/min, so as to obtain the finished product of the water permeable brick.
First, detection of finished product performance index
Cutting the water permeable bricks prepared in the embodiments 1-5 and the comparative examples 1-3 into 50mm multiplied by 150mm according to a JC/T945-2005 method, detecting the compressive strength, the breaking strength, the water retention property and the water permeability coefficient (water temperature 15 ℃), determining the sintering crack rate of the water permeable bricks obtained in the sintering step, determining the (wet) antiskid value by adopting the stipulation of the national standard 'concrete pavement brick' GB/T28635 and a pendulum antiskid performance testing method, wherein the testing results are as follows:
the results show that the compressive strength of the permeable brick reaches more than 50Mpa, and the flexural strength is more than 9.0 Mpa; the water permeability is good, the highest water permeability reaches 0.099cm/s, rainwater can quickly permeate, rainfall of 60mm/h can be resisted, the water retention is strong, rainwater can be efficiently absorbed, water accumulation and icing on the road surface can be prevented, the added ceramsite and waste porcelain granules have excellent safe skid resistance, and the skid resistance value reaches more than BPN 70; compared with the comparative example 1, the water permeable brick can achieve better performance effect under proper proportion, particularly the proportion between the waste stone powder and the vermiculite composite material, and compared with the comparative example 2, the vermiculite composite material is activated by a specific process and then is combined with the stone powder, so that the compression strength and the breaking strength of the water permeable brick are effectively enhanced, and the water permeability and the water retention property can be improved; compared with comparative example 3, the adhesive of the invention has strong permeability and durability, improves the adhesive strength of the water permeable brick, and effectively reduces cracks or fissures during sintering hardening and drying shrinkage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The water permeable brick based on waste stone powder as claimed in claim 1, which is characterized in that: the feed comprises the following raw materials in parts by weight: 100-500 parts of waste stone powder, 50-100 parts of vermiculite composite material, 100-300 parts of portland cement, 80-100 parts of fly ash, 40-80 parts of binder, 28-35 parts of ceramsite and 30-50 parts of waste porcelain granules, wherein the binder is polyether polyol resin powder and/or water-soluble urea phenolic resin powder.
2. The water permeable brick based on waste stone powder as claimed in claim 1, which is characterized in that: the feed comprises the following raw materials in parts by weight: 300 parts of waste stone powder, 80 parts of vermiculite composite material, 200 parts of portland cement, 90 parts of fly ash, 60 parts of binder, 30 parts of ceramsite and 40 parts of waste porcelain granules.
3. The water permeable brick based on waste stone powder as claimed in claim 1 or 2, characterized in that: the vermiculite composite material is prepared by washing vermiculite with deionized water for 2-4 times, drying at 150-200 ℃ for 2-6 hours, crushing, sieving with a 120-200 mesh sieve, adding an alkaline substance for activation, refluxing at 20-40 ℃ for 3-10 hours, washing with deionized water to be neutral, drying in an oven at 150-200 ℃ for 2-6 hours, and taking out.
4. The water permeable brick based on waste stone powder as claimed in claim 3, characterized in that: the alkaline substance is any one of sodium hydroxide, calcium hydroxide, barium hydroxide and potassium hydroxide.
5. The process for preparing water permeable bricks based on waste stone powder as claimed in any one of claims 1 to 3, wherein the process comprises the following steps: the method comprises the following steps:
s1, crushing the waste stone powder to obtain fine aggregate with the particle size of 1-3mm for later use;
s2, mixing the crushed waste stone powder, vermiculite composite material, Portland cement and fly ash, and stirring to obtain a mixed material A;
s3, adding a binder into the mixture A, and stirring uniformly while adding to obtain a mixture B;
s4, placing the ceramsite and the waste porcelain granules into a stirrer to be stirred to obtain a mixed material C;
s5, pouring the mixed material B into a mold, compacting, adding the mixed material C, performing vibration molding, and demolding to obtain a molded blank;
s6, placing the formed blank under a sintering furnace for sintering, controlling the pressure of the sintering furnace to be 60-100 MPa, controlling the sintering temperature rise rate to be 4-8 ℃/min, sintering to 1000-1400 ℃, then preserving heat for 30-40 min, and then cooling, wherein the cooling rate is 5-8 ℃/min, so as to obtain a finished product of the water permeable brick.
6. The process for preparing the water permeable brick based on the waste stone powder as claimed in claim 5, which is characterized in that: and the stirring speed of the S2 is 400-600 rpm, and the stirring time is 15-40 min.
7. The process for preparing the water permeable brick based on the waste stone powder as claimed in claim 5, which is characterized in that: the stirring speed of the S3 is 700-1000 rpm, and the stirring time is 8-15 min.
8. The process for preparing the water permeable brick based on the waste stone powder as claimed in claim 5, which is characterized in that: and the stirring speed of the S4 is 300-500 rpm, and the stirring time is 15-40 min.
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| CN106220143A (en) * | 2016-07-25 | 2016-12-14 | 滁州市瑞景园林建设有限公司 | A kind of low cost wall brick |
| WO2018107659A1 (en) * | 2016-12-15 | 2018-06-21 | 东莞深圳清华大学研究院创新中心 | Composite water-permeable brick and manufacturing method therefor |
| CN109694232A (en) * | 2017-10-23 | 2019-04-30 | 陈添就 | A kind of Ceramic water-permeable brick |
| CN108164224A (en) * | 2018-03-27 | 2018-06-15 | 刘群 | A kind of preparation method of the environment friendly pervious concrete of highway engineering |
| CN108516758A (en) * | 2018-04-04 | 2018-09-11 | 保山保农农业开发股份有限公司 | A kind of farmland drainage ditch colorful water-permeable brick body |
| CN108706959A (en) * | 2018-06-06 | 2018-10-26 | 湖南工程学院 | A kind of water-permeable brick and its manufacturing method |
| CN109721295A (en) * | 2019-02-20 | 2019-05-07 | 谭九香 | A kind of preparation method of ceramic water-permeable brick |
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