CN109020460B - Preparation method of composite grass planting brick raw material - Google Patents
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- CN109020460B CN109020460B CN201811011654.9A CN201811011654A CN109020460B CN 109020460 B CN109020460 B CN 109020460B CN 201811011654 A CN201811011654 A CN 201811011654A CN 109020460 B CN109020460 B CN 109020460B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Ceramic Engineering (AREA)
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Abstract
The invention relates to a preparation method of a raw material of a composite grass planting brick, belonging to the technical field of building materials. The invention increases the content of aluminum in sea mud by mixing the sea mud with aluminum ash, then mixes with pre-modified waste slag, then soaks with hydrochloric acid, releases the metal in the metal oxide in the raw material in the form of ions under the action of the hydrochloric acid, then flocculates and settles the metal ions on the surface of the raw material under the action of adding additives, then mixes with ferrous chloride to form nano mesoporous ferric oxide under alkaline condition and form aluminum hydroxide to deposit on the surface of the raw material, thereby increasing the anti-freezing performance of the grass planting brick, and adds pre-treated straw powder, exposes the fiber in the straw by pre-treatment, and then combines with added maleic anhydride and polyethyleneimine to react, thereby improving the water retention performance.
Description
Technical Field
The invention relates to a preparation method of a raw material of a composite grass planting brick, belonging to the technical field of building materials.
Background
The grass planting brick is formed by vibrating and pressing concrete, river sand, pigment and other excellent materials through a high-pressure brick machine, the brick is completely free of burning, the requirement of environment-friendly production is met, the grass planting brick is laid on the ground and has good stability, the greening area is wide, the grass planting brick can be rolled by pedestrians and vehicles without being damaged, meanwhile, the root of green grass grows below the grass planting brick, the grass root cannot be damaged, and therefore the grass planting brick is widely used for building foundation. However, the existing grass planting bricks have the following disadvantages: 1) the pressure resistance of the bearing is still to be improved as a bearable surface; 2) the cost of the grass planting brick is higher and is to be reduced. Chinese patent application No. CN201410157310.4 discloses a grass planting brick manufactured by using sintered flue gas semi-dry desulfurization ash and a manufacturing method thereof, wherein the grass planting brick comprises the following components in percentage by weight: semi-dry desulfurized fly ash: 5-25%; steel slag: 30-50%; mineral powder: 10-30%; cement: 0 to 10 percent; aggregate: 5 to 20 percent. The method comprises the following steps: 1) mixing the dried and ground components according to the proportion to form a dry material, and then adding water into the dry material and uniformly stirring to form a wet mixture; 2) injecting the wet mixed material into a grass planting brick mold, and pressing the wet mixed material into a blank at normal temperature and under the pressure of 170-550 tons; 3) and (3) curing the blank body at the normal temperature in the open air for 7-8 days, watering to keep the surface of the blank body moist, and naturally placing the blank body for 28-30 days to obtain the high-strength grass planting brick. The compressive strength of the grass planting brick reaches more than 10MPa in 7 days, reaches 15MPa in 28 days, is 50 percent higher than that of the existing common grass planting brick, greatly improves the compressive strength of the grass planting brick, realizes the recycling of waste residues, but has low water retention rate and poor freezing resistance, and causes great loss of product strength. Therefore, how to realize the grass planting brick with high water retention rate, good frost resistance and small strength loss is a technical problem to be solved urgently in the industry, and has necessary significance not only for the field of building materials, but also for the development of the grass planting brick.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems of low water retention rate and poor freezing resistance of the conventional grass planting brick, the invention provides a preparation method of a composite grass planting brick raw material.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a raw material of a composite grass planting brick comprises the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 4-6: 3 for ball milling, collecting ball milling materials, performing ultrasonic oscillation on the ball milling materials, water and the pre-modified waste residue materials according to the mass ratio of 7-9: 10: 3-5, standing, filtering and drying to obtain a base material;
(2) stirring and mixing the base material and hydrochloric acid according to the mass ratio of 3: 7-9, adding 8-10% of additive into the base material, performing ultrasonic oscillation, standing, filtering, and collecting filter residues;
(3) taking 90-95 parts of water, 26-32 parts of filter residue, 13-15 parts of ferrous chloride, 9-15 parts of sodium silicate, 8-13 parts of pretreated plant straw powder, 3-8 parts of ammonium bicarbonate, 2-4 parts of surfactant, 1-3 parts of dispersing agent and 1-3 parts of auxiliary agent by weight;
(4) firstly, putting water, filter residues, ferrous chloride and ammonium bicarbonate into a reactor, heating by microwave, then adding a surfactant, a dispersing agent and an auxiliary agent, adjusting the pH to 8.0-8.5 by using ammonia water, stirring for 60-80 min, adding pretreated plant straw powder, stirring for 30-35 min, adding sodium silicate, stirring and mixing, collecting a mixture, spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
The preparation method of the pre-modified waste slag material in the step (1) comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the iron filings according to the mass ratio of 7-9: 4:1, extruding, crushing, sieving, soaking sieved particles in hydrogen peroxide, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
The additive in the step (2) is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 3-5.
The preparation method of the pretreated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving with a 200-mesh sieve, mixing sieved particles with water according to the mass ratio of 1:2, performing steam explosion, collecting an explosion product, filtering, and drying filter residues to obtain the pretreated plant straw powder.
The surfactant is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
The dispersing agent is any one of sodium stearate and magnesium stearate.
The auxiliary agent is any one of sodium gluconate and sodium tartrate.
Compared with other methods, the method has the beneficial technical effects that:
the invention increases the content of aluminum in sea mud by mixing the sea mud with aluminum ash, then mixes with pre-modified waste slag, then soaks with hydrochloric acid, releases the metal in the metal oxide in the raw material in the form of ions by the action of the hydrochloric acid, then flocculates and settles the metal ions on the surface of the raw material by the action of adding additives, then mixes with ferrous chloride to form nano mesoporous ferric oxide and aluminum hydroxide to deposit on the surface of the raw material under alkaline condition, increases the anti-freezing performance of the grass planting brick, adds pre-treated straw powder, exposes the fiber in the straw by pre-treatment, then combines and reacts with added maleic anhydride and polyethyleneimine to improve the water retention performance, and effectively delays the reaction speed of components such as tricalcium silicate and dicalcium silicate with water by the action of auxiliary agent, the setting time of the raw materials is delayed within a certain thickness range, so that the grass planting bricks on the surface layer are set later than those in the surface layer during maintenance, pores are easy to form in the grass planting bricks, and the water absorption and retention performance is improved.
Detailed Description
The sea mud mainly comprises four parts of crystals, colloid, microorganisms, mud and the like. The crystal is mainly formed by mixing inorganic substances such as calcium sulfate, calcium phosphate, calcium carbonate, magnesium phosphate, magnesium carbonate, ferric carbonate, silicate particles and the like. Inorganic substances in the colloid comprise ferric sulfide, ferric hydrogen sulfide, ferrous hydroxide, aluminum hydroxide, manganese hydroxide, aluminum oxide, manganese oxide, calcium oxide, magnesium oxide, titanium oxide, phosphorus pentoxide and the like, and about 100 kinds of microorganisms such as vibrio hydrogen sulfide, thiospirillum and albur are generated in the formation process of the sea mud. The slurry is composed of mineral salts, colloid, water solution of organic substance and gas, and contains trace rare earth elements.
The preparation method of the pre-modified waste slag material comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the scrap iron according to the mass ratio of 7-9: 4:1, extruding for 10min at 3MPa, crushing, sieving by a 200-mesh sieve, soaking sieved particles in 0.3mol/L hydrogen peroxide for 40min, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
The additive is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 3-5.
The preparation method of the pretreated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving with a 200-mesh sieve, mixing sieved particles with water according to the mass ratio of 1:2, performing steam explosion under the pressure of 2.6MPa for 120-130 s, collecting exploded materials, filtering, and drying filter residues to obtain the pretreated plant straw powder.
The surfactant is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
The dispersant is one of sodium stearate and magnesium stearate.
The auxiliary agent is any one of sodium gluconate and sodium tartrate.
A preparation method of a raw material of a composite grass planting brick comprises the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 4-6: 3, performing ball milling for 30min at a speed of 500r/min, collecting ball milled materials, performing ultrasonic oscillation on the ball milled materials, water and the pre-modified waste residue materials according to the mass ratio of 7-9: 10: 3-5 for 15min, standing for 70min, filtering, and drying to obtain a base material;
(2) stirring and mixing a base material and 0.5mol/L hydrochloric acid according to the mass ratio of 3: 7-9 for 1h, adding an additive accounting for 8-10% of the base material, performing ultrasonic oscillation for 50min, standing for 3h, filtering, and collecting filter residues;
(3) taking 90-95 parts of water, 26-32 parts of filter residue, 13-15 parts of ferrous chloride, 9-15 parts of sodium silicate, 8-13 parts of pretreated plant straw powder, 3-8 parts of ammonium bicarbonate, 2-4 parts of surfactant, 1-3 parts of dispersing agent and 1-3 parts of auxiliary agent by weight;
(4) firstly, putting water, filter residue, ferrous chloride and ammonium bicarbonate into a reactor, heating to 80 ℃ by microwave, then adding a surfactant, a dispersing agent and an auxiliary agent, adjusting the pH to 8.0-8.5 by using ammonia water, stirring for 60-80 min, adding pretreated plant straw powder, stirring for 30-35 min, adding sodium silicate, stirring and mixing for 1h, collecting a mixture, carrying out spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
The preparation method of the pre-modified waste slag material comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the scrap iron according to the mass ratio of 9:4:1, extruding for 10min at 3MPa, crushing, sieving by a 200-mesh sieve, soaking sieved particles in 0.3mol/L hydrogen peroxide for 40min, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
The additive is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 5.
The preparation method of the pretreated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving with a 200-mesh sieve, mixing sieved particles with water according to the mass ratio of 1:2, performing steam explosion under the pressure of 2.6MPa for 130s, collecting exploded substances, filtering, and drying filter residues to obtain the pretreated plant straw powder.
The surfactant is sodium dodecyl sulfate.
The dispersing agent is magnesium stearate.
The auxiliary agent is sodium tartrate.
A preparation method of a raw material of a composite grass planting brick comprises the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 6:3, performing ball milling for 30min at the speed of 500r/min, collecting ball milled materials, performing ultrasonic oscillation on the ball milled materials, water and the pre-modified waste residue materials according to the mass ratio of 9:10:5 for 15min, standing for 70min, filtering and drying to obtain a base material;
(2) stirring and mixing the base material and 0.5mol/L hydrochloric acid according to the mass ratio of 3:9 for 1h, adding an additive accounting for 10% of the base material, carrying out ultrasonic oscillation for 50min, standing for 3h, filtering, and collecting filter residues;
(3) according to the weight parts, 95 parts of water, 32 parts of filter residue, 15 parts of ferrous chloride, 15 parts of sodium silicate, 13 parts of pretreated plant straw powder, 8 parts of ammonium bicarbonate, 4 parts of surfactant, 3 parts of dispersant and 3 parts of auxiliary agent are taken;
(4) firstly, putting water, filter residue, ferrous chloride and ammonium bicarbonate into a reactor, heating to 80 ℃ by microwave, then adding a surfactant, a dispersant and an auxiliary agent, adjusting the pH to 8.5 by using ammonia water, stirring for 80min, adding pretreated plant straw powder, stirring for 33min, adding sodium silicate, stirring and mixing for 1h, collecting a mixture, carrying out spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
The preparation method of the pre-modified waste slag material comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the scrap iron according to the mass ratio of 8:4:1, extruding for 10min at 3MPa, crushing, sieving by a 200-mesh sieve, soaking sieved particles in 0.3mol/L hydrogen peroxide for 40min, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
The additive is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 4.
The preparation method of the pretreated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving by a 200-mesh sieve, mixing sieved particles with water according to the mass ratio of 1:2, performing steam explosion under the pressure of 2.6MPa for 125s, collecting exploded substances, filtering, and drying filter residues to obtain the pretreated plant straw powder.
The surfactant is sodium dodecyl sulfate.
The dispersing agent is magnesium stearate.
The auxiliary agent is sodium gluconate.
A preparation method of a raw material of a composite grass planting brick comprises the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 5:3, performing ball milling for 30min at the speed of 500r/min, collecting ball milled materials, performing ultrasonic oscillation on the ball milled materials, water and the pre-modified waste residue materials according to the mass ratio of 8:10:4 for 15min, standing for 70min, filtering and drying to obtain a base material;
(2) stirring and mixing the base material and 0.5mol/L hydrochloric acid according to the mass ratio of 3:8 for 1h, adding an additive accounting for 9% of the base material, carrying out ultrasonic oscillation for 50min, standing for 3h, filtering, and collecting filter residues;
(3) taking 93 parts of water, 30 parts of filter residue, 14 parts of ferrous chloride, 12 parts of sodium silicate, 11 parts of pretreated plant straw powder, 5 parts of ammonium bicarbonate, 3 parts of surfactant, 2 parts of dispersant and 2 parts of assistant in parts by weight;
(4) firstly, putting water, filter residue, ferrous chloride and ammonium bicarbonate into a reactor, heating to 80 ℃ by microwave, then adding a surfactant, a dispersant and an auxiliary agent, adjusting the pH to 8.5 by using ammonia water, stirring for 70min, adding pretreated plant straw powder, stirring for 33min, adding sodium silicate, stirring and mixing for 1h, collecting a mixture, carrying out spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
The preparation method of the pre-modified waste slag material comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the scrap iron according to the mass ratio of 7:4:1, extruding for 10min at 3MPa, crushing, sieving by a 200-mesh sieve, soaking sieved particles in 0.3mol/L hydrogen peroxide for 40min, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
The additive is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 3.
The preparation method of the pretreated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving with a 200-mesh sieve, mixing sieved particles with water according to the mass ratio of 1:2, performing steam explosion under the pressure of 2.6MPa for 120s, collecting exploded substances, filtering, and drying filter residues to obtain the pretreated plant straw powder.
The surfactant is sodium dodecyl benzene sulfonate.
The dispersant is sodium stearate.
The auxiliary agent is sodium gluconate.
A preparation method of a raw material of a composite grass planting brick comprises the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 4:3, performing ball milling for 30min at the speed of 500r/min, collecting ball milled materials, performing ultrasonic oscillation on the ball milled materials, water and the pre-modified waste residue materials according to the mass ratio of 7:10:3 for 15min, standing for 70min, filtering and drying to obtain a base material;
(2) stirring and mixing a base material and 0.5mol/L hydrochloric acid according to a mass ratio of 3:7 for 1h, adding 8-10% of additive into the base material, performing ultrasonic oscillation for 50min, standing for 3h, filtering, and collecting filter residues;
(3) taking 90 parts of water, 26 parts of filter residue, 13 parts of ferrous chloride, 9 parts of sodium silicate, 8 parts of pretreated plant straw powder, 3 parts of ammonium bicarbonate, 2 parts of surfactant, 1 part of dispersant and 1 part of auxiliary agent according to parts by weight;
(4) firstly, putting water, filter residue, ferrous chloride and ammonium bicarbonate into a reactor, heating to 80 ℃ by microwave, then adding a surfactant, a dispersant and an auxiliary agent, adjusting the pH to 8.0 by using ammonia water, stirring for 60min, adding pretreated plant straw powder, stirring for 30min, adding sodium silicate, stirring and mixing for 1h, collecting a mixture, carrying out spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
Comparative example a commercial grass-planting brick.
Mixing the raw materials of the composite grass planting bricks prepared in the examples 1-3 with water according to the mass ratio of 7: 1-3, putting the mixture into a grass planting brick mold, pressing the mixture into a blank at the temperature of 24-27 ℃ and under the pressure of 10-15 MPa, curing the blank at the open air at normal temperature for 7-8 days, watering every 24 hours during the curing period to keep the surface of the blank moist, and naturally standing the blank for 28-30 days after the curing is finished to obtain the grass planting brick.
The grass planting bricks prepared in the above examples 1-3 and the grass planting bricks in the comparative example were tested.
Freezing resistance: testing according to GB/T4111 test method for concrete blocks and bricks, and determining the (compressive) strength loss rate of a test piece after 25 times of freeze-thaw cycles;
1. compressive strength: measuring according to GB/T4111 standard;
2. water retention: the determination is carried out according to the standard NY/T1253-2006 grass planting brick.
The results are shown in Table 1.
TABLE 1
| Freeze resistance/25 cycles of freeze-thaw, strength loss (%) | Compressive strength/MPa | Water retention rate/%) | |
| Example 1 | 6.3 | 43.8 | 34.6 |
| Example 2 | 5.9 | 48.9 | 35.2 |
| Example 3 | 6.2 | 46.2 | 33.8 |
| Comparative example | 18.6 | 26.3 | 24.6 |
In conclusion, the raw material of the composite grass planting brick prepared by the invention has better water retention rate and better frost resistance.
Claims (6)
1. A preparation method of a raw material of a composite grass planting brick is characterized by comprising the following steps:
(1) putting the sea mud and the aluminum ash into a ball mill according to the mass ratio of 4-6: 3 for ball milling, collecting ball milling materials, performing ultrasonic oscillation on the ball milling materials, water and the pre-modified waste residue materials according to the mass ratio of 7-9: 10: 3-5, standing, filtering and drying to obtain a base material;
(2) stirring and mixing the base material and hydrochloric acid according to the mass ratio of 3: 7-9, adding 8-10% of additive into the base material, performing ultrasonic oscillation, standing, filtering, and collecting filter residues; the additive is prepared by mixing maleic anhydride and polyethyleneimine according to the mass ratio of 1: 3-5;
(3) taking 90-95 parts of water, 26-32 parts of filter residue, 13-15 parts of ferrous chloride, 9-15 parts of sodium silicate, 8-13 parts of pretreated plant straw powder, 3-8 parts of ammonium bicarbonate, 2-4 parts of surfactant, 1-3 parts of dispersing agent and 1-3 parts of auxiliary agent by weight;
(4) firstly, putting water, filter residues, ferrous chloride and ammonium bicarbonate into a reactor, heating by microwave, then adding a surfactant, a dispersing agent and an auxiliary agent, adjusting the pH to 8.0-8.5 by using ammonia water, stirring for 60-80 min, adding pretreated plant straw powder, stirring for 30-35 min, adding sodium silicate, stirring and mixing, collecting a mixture, spray drying, and collecting a dried substance to obtain the composite grass planting brick raw material.
2. The preparation method of the composite grass-planting brick raw material according to claim 1, wherein the preparation method of the pre-modified waste slag material in the step (1) comprises the steps of stirring and mixing the slag soil, the blast furnace slag and the scrap iron according to the mass ratio of 7-9: 4:1, extruding, crushing, sieving, soaking sieved particles in hydrogen peroxide, filtering, collecting filter residues, and drying to obtain the pre-modified waste material.
3. The preparation method of the composite grass planting brick raw material according to claim 1, wherein the preparation method of the pre-treated plant straw powder comprises the steps of mixing wheat straw and corn straw according to equal mass, crushing, sieving by a 200-mesh sieve, mixing the sieved particles with water according to a mass ratio of 1:2, performing steam explosion, collecting an explosion product, filtering, and drying filter residues to obtain the pre-treated plant straw powder.
4. The method for preparing a raw material of a composite grass-planting brick as claimed in claim 1, wherein the surfactant is any one of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
5. The method for preparing a raw material for a composite grass-planting brick as claimed in claim 1, wherein the dispersing agent is any one of sodium stearate and magnesium stearate.
6. The method for preparing the raw material of the composite grass planting brick as claimed in claim 1, wherein the auxiliary agent is any one of sodium gluconate and sodium tartrate.
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