CN110683799A - Preparation method of ecological water-retention grass planting brick - Google Patents
Preparation method of ecological water-retention grass planting brick Download PDFInfo
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- CN110683799A CN110683799A CN201910902419.9A CN201910902419A CN110683799A CN 110683799 A CN110683799 A CN 110683799A CN 201910902419 A CN201910902419 A CN 201910902419A CN 110683799 A CN110683799 A CN 110683799A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- 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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
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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
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/004—Pavings specially adapted for allowing vegetation
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention mainly relates to the technical field of buildings, and discloses a preparation method of an ecological water-retention grass planting brick, which comprises the following steps: sludge modification, blast furnace slag pretreatment, molding and maintenance; according to the preparation method of the ecological water-retention grass planting brick provided by the invention, the added raw materials are mostly industrial wastes, waste is turned into wealth, the environment is protected, the preparation is simple, the mass production cost is saved, the prepared grass planting brick is high in strength, strong in durability, good in water retention performance, beneficial to plant growth, capable of saving a large amount of later-stage water, and convenient to popularize and use.
Description
Technical Field
The invention mainly relates to the technical field of buildings, in particular to a preparation method of an ecological water-retention grass planting brick.
Background
The grass planting brick is formed by vibrating and pressing materials such as concrete, river sand, pigment and the like by using a high-pressure brick machine, the brick is completely free of burning, meets the requirement of environmental protection production, and has strong pressure resistance through scientific system maintenance, good stability when being laid on the ground, wide greening area, capability of bearing rolling of pedestrians and vehicles without being damaged, meanwhile, the root of green grass grows below the grass planting brick to avoid grass root damage, so the grass planting brick is widely applied, but the traditional grass planting brick is directly formed by vibrating and pressing the high-pressure brick machine at present, high strength and compact structure, and can bear rolling of vehicles, but the water retention capability of the grass planting brick is poor, water can be quickly evaporated from a hollow part, and frequent watering is needed for promoting plant growth at the hollow part, although the brick is not burnt in the preparation process of the grass planting brick, the energy can be saved, but the later period needs heating maintenance, and a large amount of water is needed after the use, which is also a consumption of resources; at present, a small amount of grass planting lattices prepared by using high-density polyethylene are also available, although the prepared grass planting lattices and grass planting bricks are all hollow structures and are light in structure, the frames of the grass planting lattices are very thin and narrow, and if the prepared frames are the same as the traditional grass planting bricks, the structures are not light, so that vehicles and pedestrians are easy to sink after passing through the grass planting lattices prepared by using the high-density polyethylene, and are continuously blown, sun-dried and rolled, so that the grass planting lattices are easy to break, short in service life and high in maintenance cost, do not have water retention capacity, and in order to promote the growth of plants in the hollow positions, the grass planting lattices prepared by using the high-density polyethylene also need to be frequently watered, and are also a consumption of resources; therefore, a grass planting brick which can retain water and is ecological and environment-friendly is needed.
The prior patent document CN108503284A discloses a preparation method of a high-strength water-retaining grass planting brick, and discloses that secondary precipitated sludge, palygorskite and acid-leaching manganese slag are respectively treated firstly, then polypropylene fiber, a water reducing agent, deionized water, acidified clay, cement and the like are added, and heating steam curing is carried out after the materials are fully and uniformly stirred; a lot of raw materials are added into the treatment process of the raw materials in the patent document, and various other raw materials are added, so that the procedure is complex, the required cost is high, and the popularization and the use of the water-retention grass planting brick are limited.
Disclosure of Invention
In order to make up the defects of the prior art, the invention aims to provide a preparation method of an ecological water-retention grass planting brick.
A preparation method of an ecological water-retention grass planting brick comprises the following steps:
(1) modifying sludge, namely taking sludge precipitated in a sewage treatment tank, removing impurities, adjusting the water content to 26 ~ 30% to obtain treated sludge, adding citric acid fatty glyceride accounting for 1.7 ~ 1.9.9% of the weight of the treated sludge, uniformly stirring, improving the cohesiveness and the fluidity of the sludge, fully combining the sludge with other raw materials, heating at 310 ~ 330 ℃ for 25 ~ 30min after freezing, improving the porosity of the sludge, improving the water retention capacity of the grass planting bricks, and naturally cooling to room temperature to obtain modified sludge;
(2) blast furnace slag pretreatment, namely crushing the blast furnace slag to 20 ~ 40 meshes, adding an acetic acid solution with the weight of 16 ~ 18 percent of the weight of the slag into the blast furnace slag, standing the mixture for 2 ~ 3d at the temperature of 8 ~ 10 ℃ to ensure that the acetic acid solution and the blast furnace slag fully reflect, adjusting the acid-base property and the air permeability of the blast furnace slag, promoting the growth of plants, drying the mixture at the temperature of 160 ~ 200 ℃ to the water content of 5 ~ 10 percent, improving the porosity of the crushed blast furnace slag and the water retention property of the grass planting brick to obtain the pretreated blast furnace slag;
(3) molding, namely uniformly mixing cement, modified sludge, pretreated blast furnace slag, zeolite powder and activated carbon, adjusting the water content to 32 ~ 34%, sealing and standing at 5 ~ 10 ℃ for 2 ~ 3d, and stirring at 30 ~ 35r/min for 15 ~ 20min to ensure that the brick body has uniform water content, complete structure and convenient demolding, wherein the added zeolite powder and activated carbon can improve the strength and porosity of the grass planting brick and improve the water retention performance of the grass planting brick, and the molded grass planting brick is obtained by extrusion molding;
(4) maintaining, namely placing the formed grass planting bricks in a hydrothermal reaction kettle, rapidly heating to 160 ~ 180 ℃, preserving heat for 4 ~ 5h, then cooling to 112 ~ 119 ℃ at the speed of 1.7 ~ 2.5.5 ℃/min, preserving heat for 2 ~ 3h, rapidly heating and then preserving heat for a long time, rapidly fixing the external shape of the grass planting bricks, slowly reducing the temperature and then preserving heat for a short time, so that the bricks form a uniform and stable gel structure, the strength of the grass planting bricks is improved, the structural integrity of the grass planting bricks is kept, the grass planting bricks are beneficial to popularization and use, and the temperature is naturally reduced to room temperature, so that the ecological water-retaining grass planting bricks are obtained.
And (2) freezing in the step (1) at the temperature of-23 ~ -25 ℃ for 10 ~ 12 h.
The volume fraction of the acetic acid solution in the step (2) is 3 ~ 4%.
The cement, the modified sludge, the pretreated blast furnace slag, the zeolite powder and the activated carbon in the step (3) are respectively 15 ~ 17 parts of cement, 34 parts of modified sludge, 34 ~ 36 parts of pretreated blast furnace slag, 26 ~ 28 parts of zeolite powder, 21 parts of 21 ~ 23 parts of zeolite powder and 12 parts of activated carbon, 12 ~ 14 parts of activated carbon.
The rapid heating in the step (4) is carried out at a speed of 3 ~ 4 ℃/min.
The ecological water-retention grass-planting brick is prepared by the preparation method of the ecological water-retention grass-planting brick.
The invention has the advantages that: according to the preparation method of the ecological water-retention grass planting brick, the added raw materials are mostly industrial wastes, waste is turned into wealth, the environment is protected, the preparation is simple, the mass production cost is saved, the prepared grass planting brick is high in strength, strong in durability, good in water retention performance, beneficial to plant growth, capable of saving a large amount of later-stage water and convenient to popularize and use; after the water content of the sludge precipitated in the sewage treatment tank is adjusted, citric acid fatty glyceride is added, so that the cohesiveness and the fluidity of the sludge are improved, the sludge can be fully combined with other raw materials, and low-temperature freezing and high-temperature heating are carried out, so that the porosity of the sludge can be improved, and the water retention capacity of the grass planting brick is improved; adding acetic acid solution into the blast furnace slag, standing at low temperature to enable the acetic acid solution to be fully reflected with the blast furnace slag, adjusting the pH value and the air permeability of the blast furnace slag, promoting plant growth, heating the blast furnace slag at high temperature, improving the porosity of the crushed blast furnace slag and improving the water retention performance of the grass planting brick; adding cement, zeolite powder and active carbon, adjusting water content, standing at low temperature, mixing and extruding to form, so that the brick has uniform water content, complete structure and convenient demoulding, and the added zeolite powder and active carbon can improve the strength and porosity of the grass planting brick and improve the water retention performance of the grass planting brick; maintain the grass planting brick after the shaping, carry out long-term heat preservation after the rapid heating earlier, can fix the external shape of grass planting brick fast, carry out short-term heat preservation again after the slow cooling, make the brick body form even stable gel structure, improve the intensity of grass planting brick, keep the grass planting brick structure complete, do benefit to the grass planting brick and use widely.
Detailed Description
The invention is illustrated by the following specific examples.
Example 1
A preparation method of an ecological water-retention grass planting brick comprises the following steps:
(1) sludge modification: taking sludge precipitated in a sewage treatment tank, removing impurities, adjusting the water content to 26% to obtain treated sludge, adding citric acid fatty glyceride accounting for 1.7% of the weight of the treated sludge, uniformly stirring, improving the cohesiveness and the fluidity of the sludge, fully combining the sludge with other raw materials, freezing at-23 ℃ for 10 hours, heating at 310 ℃ for 25min, improving the porosity of the sludge, improving the water retention capacity of grass planting bricks, and naturally cooling to room temperature to obtain modified sludge;
(2) blast furnace slag pretreatment, namely crushing the blast furnace slag to 20 meshes, adding an acetic acid solution with 16 percent of slag weight and 3 percent of volume fraction into the blast furnace slag, standing for 2d at 8 ℃, fully reflecting the acetic acid solution and the blast furnace slag, adjusting the acidity-basicity and the air permeability of the blast furnace slag, promoting plant growth, drying at 160 ℃ until the water content is 5 ~ 10 percent, improving the porosity of the crushed blast furnace slag, and improving the water retention performance of grass planting bricks to obtain the pretreated blast furnace slag;
(3) molding: uniformly mixing cement, modified sludge, pretreated blast furnace slag, zeolite powder and active carbon, wherein the cement 15, the modified sludge 34, the pretreated blast furnace slag 26, the zeolite powder 21 and the active carbon 12 are respectively mixed according to the parts by weight, the water content is adjusted to be 32%, the mixture is sealed and kept stand for 2d at the temperature of 5 ℃, and then is stirred for 15min at the speed of 30r/min, so that the brick body has uniform water content, complete structure and convenient demoulding, meanwhile, the added zeolite powder and the active carbon can improve the strength and porosity of the grass planting brick, improve the water retention performance of the grass planting brick, and are extruded and molded to obtain the molded grass planting brick;
(4) and (5) maintenance: placing the formed grass planting bricks in a hydrothermal reaction kettle, rapidly heating to 160 ℃ at the speed of 3 ℃/min, preserving heat for 4h, cooling to 112 ℃ at the speed of 1.7 ℃/min, preserving heat for 2h, rapidly heating and then preserving heat for a long time, rapidly fixing the external shape of the grass planting bricks, slowly reducing the temperature and then preserving heat for a short time, enabling the bricks to form an even and stable gel structure, improving the strength of the grass planting bricks, keeping the structure of the grass planting bricks complete, being beneficial to popularization and use of the grass planting bricks, naturally cooling to room temperature, and obtaining the ecological water-retaining grass planting bricks.
And (3) performance test results: the compressive strength is 47.7 MPa; the water retention capacity is 36%; the compressive strength is lost by 5.7 percent after 50 times of freeze-thaw cycles.
Example 2
A preparation method of an ecological water-retention grass planting brick comprises the following steps:
(1) sludge modification: taking sludge precipitated in a sewage treatment tank, removing impurities, adjusting the water content to 28% to obtain treated sludge, adding citric acid fatty glyceride accounting for 1.8% of the weight of the treated sludge, uniformly stirring, improving the cohesiveness and the fluidity of the sludge, fully combining the sludge with other raw materials, freezing at-24 ℃ for 11 hours, heating at 320 ℃ for 28min, improving the porosity of the sludge, improving the water retention capacity of grass planting bricks, and naturally cooling to room temperature to obtain modified sludge;
(2) blast furnace slag pretreatment, namely crushing the blast furnace slag to 30 meshes, adding 17 percent by weight of acetic acid solution with volume fraction of 3.5 percent into the blast furnace slag, standing the mixture at 9 ℃ for 2.5 days to enable the acetic acid solution to be fully reflected with the blast furnace slag, adjusting the acid-base property and the air permeability of the blast furnace slag, promoting plant growth, drying the mixture at 180 ℃ until the water content is 5 ~ 10 percent, improving the porosity of the crushed blast furnace slag and the water retention property of grass planting bricks to obtain the pretreated blast furnace slag;
(3) molding: uniformly mixing cement, modified sludge, pretreated blast furnace slag, zeolite powder and active carbon, respectively mixing 16 parts by weight of cement, 35 parts by weight of modified sludge, 27 parts by weight of pretreated blast furnace slag, 22 parts by weight of zeolite powder and 13 parts by weight of active carbon, adjusting the water content to 33%, sealing and standing at 8 ℃ for 2.5 days, and stirring at 33r/min for 18min to ensure that the brick body has uniform water content, complete structure and convenient demoulding, wherein the added zeolite powder and active carbon can improve the strength and porosity of the grass planting brick, improve the water retention performance of the grass planting brick, and performing extrusion forming to obtain a formed grass planting brick;
(4) and (5) maintenance: placing the formed grass planting brick in a hydrothermal reaction kettle, rapidly heating to 170 ℃ at the speed of 3.5 ℃/min, preserving heat for 4.5h, then cooling to 116 ℃ at the speed of 2.1 ℃/min, preserving heat for 2.5h, rapidly heating and then preserving heat for a long time, rapidly fixing the external shape of the grass planting brick, slowly reducing the temperature and then preserving heat for a short time, enabling the brick body to form an even and stable gel structure, improving the strength of the grass planting brick, keeping the structure of the grass planting brick complete, being beneficial to popularization and use of the grass planting brick, and naturally cooling to room temperature to obtain the ecological water-preserving grass planting brick.
And (3) performance test results: the compressive strength is 48.5 MPa; the water retention capacity is 37%; the compressive strength is lost by 5.3 percent after 50 times of freeze-thaw cycles.
Example 3
A preparation method of an ecological water-retention grass planting brick comprises the following steps:
(1) sludge modification: taking sludge precipitated in a sewage treatment tank, removing impurities, adjusting the water content to 30% to obtain treated sludge, adding citric acid fatty glyceride accounting for 1.9% of the weight of the treated sludge, uniformly stirring, improving the cohesiveness and the fluidity of the sludge, fully combining the sludge with other raw materials, freezing at-25 ℃ for 12 hours, heating at 330 ℃ for 30min, improving the porosity of the sludge, improving the water retention capacity of grass planting bricks, and naturally cooling to room temperature to obtain modified sludge;
(2) blast furnace slag pretreatment, namely crushing the blast furnace slag to 40 meshes, adding 18 percent of acetic acid solution with volume fraction of 4 percent of the weight of the slag into the blast furnace slag, standing for 3d at 10 ℃, fully reflecting the acetic acid solution and the blast furnace slag, adjusting the acid-base property and the air permeability of the blast furnace slag, promoting plant growth, drying at 200 ℃ until the water content is 5 ~ 10 percent, improving the porosity of the crushed blast furnace slag and the water retention property of the grass planting brick to obtain the pretreated blast furnace slag;
(3) molding: uniformly mixing cement, modified sludge, pretreated blast furnace slag, zeolite powder and active carbon, wherein the cement 17, the modified sludge 36, the pretreated blast furnace slag 28, the zeolite powder 23 and the active carbon 14 are respectively mixed according to the parts by weight, the water content is adjusted to be 34%, the mixture is sealed and kept stand for 3d at 10 ℃, and then is stirred for 20min at 35r/min, so that the brick body has uniform water content, complete structure and convenient demoulding, meanwhile, the added zeolite powder and the active carbon can improve the strength and porosity of the grass planting brick, improve the water retention performance of the grass planting brick, and are extruded and molded to obtain the molded grass planting brick;
(4) and (5) maintenance: placing the formed grass planting bricks in a hydrothermal reaction kettle, rapidly heating to 180 ℃ at a speed of 4 ℃/min, preserving heat for 5h, cooling to 119 ℃ at a speed of 2.5 ℃/min, preserving heat for 3h, rapidly heating and then preserving heat for a long time, rapidly fixing the external shape of the grass planting bricks, slowly reducing the temperature and then preserving heat for a short time, enabling the bricks to form an even and stable gel structure, improving the strength of the grass planting bricks, keeping the structure of the grass planting bricks complete, facilitating popularization and use of the grass planting bricks, and naturally cooling to room temperature to obtain the ecological water-retaining grass planting bricks.
And (3) performance test results: the compressive strength is 47.9 MPa; the water retention capacity is 37%; the compressive strength is lost by 5.4 percent after 50 times of freeze-thaw cycles.
Comparative example 1
The sludge modification is removed, the sludge is directly used, and the other preparation methods are the same as example 1.
And (3) performance test results: the compressive strength is 36.6 MPa; the water retention capacity is 30 percent; the compressive strength loss is 11.7 percent after 50 times of freeze-thaw cycles.
Comparative example 2
The blast furnace slag pretreatment was removed and the blast furnace slag was used as it is, and the other preparation methods were the same as in example 1.
And (3) performance test results: the compressive strength is 39.5 MPa; the water retention capacity is 32%; the compressive strength loss is 10.2 percent after 50 times of freeze-thaw cycles.
Comparative example 3
The zeolite powder is added in 31 portions, and the rest preparation method is the same as the example 1.
And (3) performance test results: the compressive strength is 37.3 MPa; the water retention capacity is 31 percent; the compressive strength is lost by 12.3 percent after 50 times of freeze-thaw cycles.
Comparative example 4
The same procedure as in example 1 was repeated except that the amount of activated carbon added was 20 parts.
And (3) performance test results: the compressive strength is 27.4 MPa; the water retention capacity is 35 percent; the compressive strength is lost by 15.6 percent after 50 times of freeze-thaw cycles.
Comparative example 5
The temperature reduction in the step (4) is removed, and the other preparation methods are the same as those in the example 1.
And (3) performance test results: the compressive strength is 37.8 MPa; the water retention capacity is 34%; the compressive strength loss is 10.9 percent after 50 times of freeze-thaw cycles.
Comparative example 6
The prior patent document CN108503284A discloses a preparation method of a high-strength water-retaining grass planting brick.
And (3) performance test results: the compressive strength is 46.2 MPa; the water retention capacity is 36%; the compressive strength loss is 9.7 percent after 50 times of freeze-thaw cycles.
The performance test method in the application is the same as that in patent document CN 108503284A; the results show that the ecological water-retaining grass-planting brick of the embodiment has high strength, strong water-retaining property and good freeze-thaw resistance, and the ecological water-retaining grass-planting brick provided by the invention has very high strength and water-retaining property and is convenient to popularize and use.
Claims (6)
1. A preparation method of an ecological water-retention grass planting brick is characterized by comprising the following steps:
(1) sludge modification, namely taking sludge precipitated in a sewage treatment tank, removing impurities, adjusting the water content to 26 ~ 30% to obtain treated sludge, adding citric acid fatty glyceride accounting for 1.7 ~ 1.9.9% of the weight of the treated sludge, uniformly stirring, freezing, heating at 310 ~ 330 ℃ for 25 ~ 30min, and naturally cooling to room temperature to obtain modified sludge;
(2) blast furnace slag pretreatment, namely crushing the blast furnace slag into 20 ~ 40 meshes, adding an acetic acid solution with the weight of 16 ~ 18 percent of the weight of the slag into the blast furnace slag, standing the mixture for 2 ~ 3d at the temperature of 8 ~ 10 ℃, and drying the mixture at the temperature of 160 ~ 200 ℃ until the water content is 5 ~ 10 percent to obtain the pretreated blast furnace slag;
(3) molding, namely uniformly mixing cement, modified sludge, pretreated blast furnace slag, zeolite powder and activated carbon, adjusting the water content to 32 ~ 34%, sealing and standing at 5 ~ 10 ℃ for 2 ~ 3d, stirring at 30 ~ 35r/min for 15 ~ 20min, and performing extrusion molding to obtain a molded grass planting brick;
(4) and (3) maintenance, namely placing the formed grass planting brick in a hydrothermal reaction kettle, rapidly heating to 160 ~ 180 ℃, preserving heat for 4 ~ 5h, cooling to 112 ~ 119 ℃ at the speed of 1.7 ~ 2.5.5 ℃/min, preserving heat for 2 ~ 3h, and naturally cooling to room temperature to obtain the ecological water-retention grass planting brick.
2. The method for preparing the ecological water-retention grass-planting brick as claimed in claim 1, wherein the freezing in the step (1) is carried out at a temperature of-23 ~ -25 ℃ for 10 ~ 12 h.
3. The method for preparing the ecological water-retention grass-planting brick as claimed in claim 1, wherein the volume fraction of the acetic acid solution in the step (2) is 3 ~ 4%.
4. The method for preparing the ecological water-retention grass-planting brick as claimed in claim 1, wherein the cement, the modified sludge, the pretreated blast furnace slag, the zeolite powder and the activated carbon in the step (3) are respectively cement 15 ~ 17, modified sludge 34 ~ 36, pretreated blast furnace slag 26 ~ 28, zeolite powder 21 ~ 23 and activated carbon 12 ~ 14 in parts by weight.
5. The method for preparing an ecological water-retention grass-planting brick as claimed in claim 1, wherein the rapid heating in step (4) is performed at a rate of 3 ~ 4 ℃/min.
6. An ecological water-retaining grass-planting brick prepared by the preparation method of the ecological water-retaining grass-planting brick of any one of claims 1 ~ 5.
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| CN201910902419.9A CN110683799A (en) | 2019-09-24 | 2019-09-24 | Preparation method of ecological water-retention grass planting brick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343006A (en) * | 2020-09-21 | 2021-02-09 | 同济大学 | Ecological bank protection material with hydrologic communication, biocompatible structure and pollution purification function and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343006A (en) * | 2020-09-21 | 2021-02-09 | 同济大学 | Ecological bank protection material with hydrologic communication, biocompatible structure and pollution purification function and preparation method and application thereof |
| CN112343006B (en) * | 2020-09-21 | 2021-10-26 | 同济大学 | Ecological bank protection material with hydrologic communication, biocompatible structure and pollution purification function and preparation method and application thereof |
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