CN115677281B - Pavement brick and preparation method thereof - Google Patents
Pavement brick and preparation method thereof Download PDFInfo
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- CN115677281B CN115677281B CN202211464640.9A CN202211464640A CN115677281B CN 115677281 B CN115677281 B CN 115677281B CN 202211464640 A CN202211464640 A CN 202211464640A CN 115677281 B CN115677281 B CN 115677281B
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- 239000011449 brick Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 66
- 239000002893 slag Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000013049 sediment Substances 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 23
- 239000004576 sand Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004575 stone Substances 0.000 claims abstract description 21
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims description 42
- 239000002245 particle Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- 238000007605 air drying Methods 0.000 claims description 10
- 238000011049 filling Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002910 solid waste Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000004115 Sodium Silicate Substances 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- 239000010802 sludge Substances 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a pavement brick and a preparation method thereof, wherein the pavement brick comprises the following raw materials: lake sediment: 6% -11%, cobble: 28% -32%, sand: 12% -13%, steel slag: 24% -34%, cement: 10% -14% of slag micropowder: 6% -10%, the mixture of water glass and sodium hydroxide accounts for 0.8% -1.2% of slag micropowder, and the water-material ratio is as follows: 0.07-0.12. The steel slag is adopted to replace part of sand and stone in the formula, so that the solid waste can be effectively utilized, and the compressive strength of the pavement brick can be improved. In addition, the invention adopts slag micropowder to replace part of cement, and the activity of the slag micropowder is stimulated by water glass and sodium hydroxide, and the slag micropowder is fully mixed with the cement, so that stronger bonding effect is achieved. The invention can consume solid waste, reduce environmental pollution, improve the utilization rate of resources, provide higher compressive strength and have good ecological economic effect.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a pavement brick and a preparation method thereof.
Background
River and lake in China are numerous, in many areas with developed economy and dense population, the river and lake are polluted to different degrees due to human activities such as industrial and agricultural production, and a large amount of pollutants are enriched in the bottom mud to cause serious pollution of the bottom mud. Common sludge treatment and disposal modes at home and abroad mainly comprise storage yard storage, land utilization, building material utilization and the like, and at present, the method mainly comprises dehydration landfill or storage yard storage and occupies a large amount of land resources.
The use of lake sediment for manufacturing building materials is a currently feasible method, and related researches on the use of lake sediment for manufacturing pavement bricks have been carried out, but the defects of low compressive strength and poor wear resistance exist in the actual use process. Aiming at the defects, the invention uses lake sediment, steel slag, slag micropowder and the like as raw materials, and improves the problems of low compressive strength and poor wear resistance of the pavement bricks by adding alkali excitation materials. The raw materials have wide sources, low economic cost and no secondary pollution to the environment. Meanwhile, the steel slag and the slag micropowder belong to industrial wastes, and can be used as raw materials for manufacturing the pavement bricks, so that the recycling of solid wastes can be realized.
Disclosure of Invention
The invention aims to provide a pavement brick which is used for solving the floor occupation problem of lake sediment, steel slag and slag micropowder, and can provide a pavement brick product with high compressive strength and good wear resistance, thereby reducing the production cost and obtaining greater benefits.
The specific technical scheme of the invention is as follows:
the pavement brick is mainly prepared from the following raw materials in percentage by mass: lake sediment: 6% -11%, cobble: 28% -32%, sand: 12% -13%, steel slag: 24% -34%, cement: 10% -14% of slag micropowder: 6% -10%, the mixture of water glass and sodium hydroxide accounts for 0.8% -1.2% of slag micropowder, and the water-material ratio is as follows: 0.07-0.12.
The pavement brick is preferably prepared from the following raw materials in percentage by mass: 6% of lake sediment, 28% of stones, 12% of sand, 34% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1;
or is prepared from the following raw materials in percentage by mass: 8% of lake sediment, 28% of stones, 12% of sand, 32% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1;
or is prepared from the following raw materials in percentage by mass: 11% of lake sediment, 32% of stones, 13% of sand, 24% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1.
the mass ratio of the water glass to the sodium hydroxide is 1:1.
The lake sediment is desiccated sediment, the water content is less than 10%, and the grain diameter is not more than 0.5mm.
The particle size of the stones is 1-6mm, and the particle size of the sand is not more than 0.5mm.
The grain size of the steel slag is 6-9mm.
The mesh number of the slag micro powder is not less than 400 meshes.
The purity of the sodium hydroxide is 96%, and the particle size is not more than 0.5mm.
The invention also provides a preparation method of the pavement brick, which comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Uniformly mixing the raw materials according to the mass percentage, adding water according to the water-material ratio, and uniformly stirring to obtain a mixed material;
(3) And (3) filling the mixture obtained in the step (2) into a die, and pressing the die into the pavement brick product.
In the step (2), the raw materials of all the components are uniformly mixed according to the mass percentage; the stirring conditions are as follows: the rotating speed is 50-60r/min, and the stirring time is at least 1 minute.
In the step (2), water is added according to the water-material ratio, and the stirring conditions are as follows: the rotating speed is 60-80r/min, and the stirring time is at least 2 minutes.
The hydraulic strength of the hydraulic machine in the step (3) is 18-22MPa.
The beneficial effects of the invention are as follows:
1. the invention takes lake sediment, steel slag and slag micropowder as main raw materials, has larger mixing amount and wider range of grain diameter of the steel slag, and plays the role of coarse aggregate. According to the formula, lake sediment, steel slag, sand and cobble are compounded, so that the reduction of the lake sediment and the steel slag can be fully realized; the cement and slag micropowder are added to produce good bonding effect, and the resource utilization problem of the slag micropowder is solved.
2. According to the invention, part of sand and stones are replaced by steel slag in the formula, so that the solid wastes can be effectively utilized, and the compressive strength and the wear resistance of the pavement brick can be improved. In addition, the invention adopts slag micropowder to replace part of cement, and the activity of the slag micropowder is stimulated by water glass and sodium hydroxide, and the slag micropowder is fully mixed with the cement, so that stronger bonding effect is achieved. The preparation method of the pavement brick can consume solid waste, reduce environmental pollution, improve the utilization rate of resources, provide higher compressive strength and wear resistance, and have good ecological and economic effects.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a pavement brick, which is prepared from the main components in the proportion shown in table 1.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, wherein the water content is lower than 10%, removing massive impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stones with the grain size of 1-6mm, sand with the grain size not exceeding 0.5mm, steel slag with the grain size of 6-9mm, cement, slag micropowder with the mesh size not less than 400 meshes, sodium silicate and sodium hydroxide with the grain size not exceeding 0.5mm according to the proportion shown in the table 1, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 60r/min and the stirring time of 6 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Example 2
The embodiment provides a pavement brick, which is prepared from the main components in the proportion shown in table 1.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stones with the grain size of 1-6mm, sand with the grain size not exceeding 0.5mm, steel slag with the grain size of 6-9mm, cement, slag micropowder with the mesh size not less than 400 meshes, sodium silicate and sodium hydroxide with the grain size not exceeding 0.5mm according to the proportion shown in the table 1, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 70r/min and the stirring time of 5 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Example 3
The embodiment provides a pavement brick, which is prepared from the main components in the proportion shown in table 1.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stones with the grain size of 1-6mm, sand with the grain size not exceeding 0.5mm, steel slag with the grain size of 6-9mm, cement, slag micropowder with the mesh size not less than 400 meshes, sodium silicate and sodium hydroxide with the grain size not exceeding 0.5mm according to the proportion shown in the table 1, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 80r/min and the stirring time of 4 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Comparative example 1
The comparative example provides a pavement brick, the main components of which are prepared from the proportions shown in Table 2.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain diameter not exceeding 0.5mm, stone powder with the grain diameter not exceeding 5mm, gold tailing sand with the grain diameter not exceeding 0.5mm, steel slag with the grain diameter of 6-9mm, cement, slag micro powder with the mesh number not less than 400, sodium silicate and sodium hydroxide with the grain diameter not exceeding 0.5mm according to the proportion shown in the table 2, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 60r/min and the stirring time of 6 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Comparative example 2
The comparative example provides a pavement brick, the main components of which are prepared from the proportions shown in Table 2.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain diameter not exceeding 0.5mm, stone powder with the grain diameter not exceeding 5mm, gold tailing sand with the grain diameter not exceeding 0.5mm, steel slag with the grain diameter of 6-9mm, cement, slag micro powder with the mesh number not less than 400, sodium silicate and sodium hydroxide with the grain diameter not exceeding 0.5mm according to the proportion shown in the table 2, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 70r/min and the stirring time of 5 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Comparative example 3
The comparative example provides a pavement brick, the main components of which are prepared from the proportions shown in Table 2.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stone powder with the grain size not exceeding 5mm, steel slag with the grain size of 6-9mm, gold tailing sand with the grain size not exceeding 0.5mm, slag micropowder with the mesh size not less than 400 meshes, water glass and sodium hydroxide with the grain size not exceeding 0.5mm according to the proportion shown in the table 2, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of the rotating speed of 80r/min and the stirring time of 4 minutes to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Comparative example 4
The comparative example provides a pavement brick, the main components of which are prepared from the proportions shown in Table 3.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stones with the grain size of 1-6mm, sand with the grain size not exceeding 0.5mm, steel slag with the grain size of 6-9mm and cement according to the proportion shown in the table 3, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of 75r/min of rotating speed and 4 min of stirring time to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the pavement brick product.
Comparative example 5
The main components of the pavement brick are prepared from the following components in proportion shown in table 3.
The preparation method of the pavement brick comprises the following steps:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing;
(2) Mixing lake sediment with the grain size not exceeding 0.5mm, stones with the grain size of 1-6mm, sand with the grain size not exceeding 0.5mm, steel slag with the grain size of 6-9mm, cement, red mud with the grain size not less than 200 meshes, slag micropowder with the grain size not less than 400 meshes, sodium silicate and sodium hydroxide with the grain size not exceeding 0.5mm according to the proportion shown in the table 3, and stirring uniformly under the conditions of the rotating speed of 55r/min and the stirring time of 2 minutes to obtain a mixed material;
(3) Adding the mixed water into the mixed material in the step (2), and uniformly stirring under the conditions of 65r/min of rotating speed and 5 min of stirring time to obtain the mixed material;
(4) And (3) filling the mixture in the step (3) into a die, hydraulic-pressing the mixture by a hydraulic press under 20MPa, and naturally curing the mixture to prepare the sidewalk grinding brick product.
Comparative example 6
Yi et al (Yi, fang Lichun, zhang Kai, ying Xiaomeng, zhou Zhixiong. Study on baking-free brick test of riverway sludge preparation [ J ]. Novel building materials, 2021, 02:150-153) replaced riverway sludge with stone nitrate to prepare baking-free bricks and examined the basic properties of the baking-free bricks. Wherein the mixing amount of cement is fixed to be 10% of the total amount, and the mixing amount of river sludge and stone nitrate is 90% of the total amount. The specific compounding ratios are shown in Table 4. The baking-free brick with the mixing amount of the river sediment of 9% is selected as a comparison.
Table 1 raw material ratios of different examples of pavement bricks
Table 2 different comparative examples of pavement bricks raw material ratio 1
Table 3 different comparative examples of pavement bricks raw material ratio 2
The mass ratio of the water glass to the sodium hydroxide in tables 1-3 is 1:1.
Raw material ratio of baking-free bricks prepared from river sludge in Table 4 Yi and the like
After the prepared pavement bricks are naturally cured for 7d and 28d, the compressive strength of the pavement bricks is tested by a compression testing machine, the wear-resistant length of the pavement bricks is tested according to an inorganic ground material wear-resistant performance test method (GB/T12988-2009), and the detection results are shown in Table 5.
Table 5 compressive strength of pavement bricks 7d, 28d
As can be seen from the comparison result of Table 5, the pavement brick prepared by the invention can be cured under natural conditions and has excellent compressive strength. As can be seen from the comparison of the raw materials, the addition of the stone powder and the gold tailing sand has a great influence on the compressive strength of the pavement brick, and the influence effect is increased along with the continuous increase of the addition amount. As can be seen from comparison of the cementing materials, the compressive strength effect of the cementing material compounded by cement and slag micropowder is better than that of other cementing materials, so that the optimal cementing material proportion of the pavement brick is invented. As can be seen from the abrasion-resistant lengths of Table 5, the pavement bricks prepared by the invention have higher abrasion resistance, wherein the abrasion-resistant lengths of the pavement bricks prepared by the examples are larger than those of the pavement bricks prepared by the comparative examples.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The pavement brick is characterized by being prepared from the following raw materials in percentage by mass: lake sediment: 6% -11%, cobble: 28% -32%, sand: 12% -13%, steel slag: 24% -34%, cement: 10% -14% of slag micropowder: 6% -10%, the mixture of water glass and sodium hydroxide accounts for 0.8% -1.2% of slag micropowder, and the water-material ratio is as follows: 0.07-0.12;
the lake sediment is dried sediment, the water content is less than 10%, and the grain diameter is not more than 0.5mm;
the particle size of the stones is 1-6mm, and the particle size of the sand is not more than 0.5mm;
the grain size of the steel slag is 6-9mm;
the mesh number of the slag micro powder is not less than 400 meshes.
2. The pavement brick according to claim 1, which is characterized by being prepared from the following raw materials in percentage by mass: 6% of lake sediment, 28% of stones, 12% of sand, 34% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1;
or is prepared from the following raw materials in percentage by mass: 8% of lake sediment, 28% of stones, 12% of sand, 32% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1;
or is prepared from the following raw materials in percentage by mass: 11% of lake sediment, 32% of stones, 13% of sand, 24% of steel slag, 12% of cement, 8% of slag micropowder, 1% of water glass and sodium hydroxide mixture, and the water-material ratio: 0.1;
the mass ratio of the water glass to the sodium hydroxide is 1:1.
3. A method of making a pavement brick according to claim 1 or 2, comprising the steps of:
(1) Naturally air-drying the lake sediment, removing large impurity particles, and crushing the lake sediment, wherein the particle size is not more than 0.5mm;
(2) Uniformly mixing the raw materials according to the mass percentage, adding water according to the water-material ratio, and uniformly stirring to obtain a mixed material;
(3) And (3) filling the mixture obtained in the step (2) into a die, and pressing the die into the pavement brick product.
4. The preparation method according to claim 3, wherein in the step (2), the raw materials of the components are uniformly mixed according to mass percent; the stirring conditions are as follows: the rotating speed is 50-60r/min, and the stirring time is at least 1 minute.
5. The method according to claim 3, wherein in the step (2), water is added according to the water-to-material ratio, and the stirring conditions are as follows: the rotating speed is 60-80r/min, and the stirring time is at least 2 minutes.
6. The method according to claim 3, wherein in the step (3), hydraulic press molding is adopted; the hydraulic strength is 18-22MPa.
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| JP2017122203A (en) * | 2016-01-08 | 2017-07-13 | 新日鐵住金株式会社 | Manufacturing method of mud-containing solidified body |
| CN107082598A (en) * | 2017-06-20 | 2017-08-22 | 合肥慧林建材有限公司 | A kind of environment-friendly type pavior brick and preparation method using riverbed sludge as major ingredient |
| CN108439886A (en) * | 2018-05-04 | 2018-08-24 | 合肥慧林建材有限公司 | It is a kind of using waste as permeable pavement brick of raw material and preparation method thereof |
| CN108727038A (en) * | 2018-07-19 | 2018-11-02 | 董春年 | A kind of steel slag concrete brick and preparation method thereof |
| CN109987900A (en) * | 2019-04-23 | 2019-07-09 | 湖南云中再生科技股份有限公司 | One kind is with building waste cementitious material as main component and preparation method thereof |
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