CN110959423A - Grass-planting brick for roof planting and preparation method thereof - Google Patents
Grass-planting brick for roof planting and preparation method thereof Download PDFInfo
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- CN110959423A CN110959423A CN201811122095.9A CN201811122095A CN110959423A CN 110959423 A CN110959423 A CN 110959423A CN 201811122095 A CN201811122095 A CN 201811122095A CN 110959423 A CN110959423 A CN 110959423A
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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
- A01G9/033—Flat containers for turf, lawn or the like, e.g. for covering roofs
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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
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
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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
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
- A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
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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
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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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- Inorganic Chemistry (AREA)
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- Ceramic Engineering (AREA)
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Abstract
The invention relates to the field of landscaping materials, in particular to a grass planting brick for roof planting and a preparation method thereof. The invention provides a grass planting brick for roof planting and a preparation method thereof, aiming at the problems of difficult roof greening construction, heavy weight, large water demand, roof structure damage and the like. The aggregate used by the planting layer of the grass planting brick is light granular soil and expanded perlite, the aggregate used by the isolation layer is light ceramic sand and light ceramsite, and the light aggregate enables the whole grass planting brick to be light, so that the load bearing pressure of a roof is effectively reduced; the granular soil and the expanded perlite in the planting layer raw materials have higher water retention rate, so that the water retention rate of the grass planting brick is higher, the watering times in the later use process are reduced, and the water is saved; meanwhile, the isolation layer is of a closed structure, so that the plant root system is prevented from extending to the roof, and the roof is prevented from being damaged by the plant root system.
Description
Technical Field
The invention relates to the field of landscaping materials, in particular to a grass planting brick for roof planting and a preparation method thereof.
Background
In China, a large amount of greening land is occupied by urban construction every year, and urban temperature is increased. In order to comply with the development requirement of constructing sponge cities for ecological civilization in China, the protection of urban environment ecology is urgent. Roof greening as a special artificial green land has become a new way and a new form for constructing a space three-dimensional greening system in modern society, and becomes a new development direction for greening construction land. With the acceleration of the urbanization process, the greening space in the city is less and less, and roof greening gradually becomes a trend of urban space greening development in the future.
At present, roof greening is mainly realized through the forms of rolled turf, planting boxes or planting pools and the like, and the forms have the following problems: the structure is complex and the construction difficulty is high; most of the concrete structures have heavy weight and high requirements on roof bearing; the planting water demand is large; the growth of the plant roots is liable to damage the roof structure.
Disclosure of Invention
Aiming at the problems, the invention provides a grass planting brick for roof planting and a preparation method thereof, which effectively solve the problems of difficult roof greening construction, heavy weight, large water demand, roof structure damage and the like in the prior art.
The invention adopts the following technical scheme:
a grass planting brick for roof planting comprises a planting layer positioned on a surface layer and an isolation layer positioned on a bottom layer, wherein raw materials of the planting layer comprise granular soil, cement, a water reducing agent, redispersible latex powder, humic acid, grass seeds and water; the raw materials of the isolating layer comprise light ceramsite, light ceramic sand, cement, redispersible latex powder, a water reducing agent and water.
Further, the planting layer comprises the following raw materials in parts by weight:
100 parts of granular soil;
5-15 parts of expanded perlite;
15-25 parts of cement;
0.5-2 parts of redispersible latex powder;
0.5-2 parts of humic acid;
0.2-0.5 part of grass seeds;
0.05-0.2 part of water reducing agent;
10-25 parts of water.
Further, the isolating layer comprises the following raw materials in parts by weight:
100 parts of light ceramsite;
light ceramic sand 125-175 parts;
80-120 parts of cement;
0.5-5 parts of redispersible latex powder;
0.1-0.5 part of water reducing agent;
25-40 parts of water.
Further, the diameter of the granular soil is 0.3-3mm, and the bulk density is 650-900kg/m3(ii) a The particle size of the light ceramsite is 3-8mm, and the bulk density is 1100kg/m3(ii) a The grain diameter of the light ceramic sand is 0.3-1mm, and the bulk density is 850-3。
Furthermore, the cement used for the planting layer is any low-alkali cement of three-waste cement, sulphoaluminate cement and glass fiber cement, and the cement used for the isolation layer is ordinary portland cement.
Further, the water reducing agents used for the planting layer and the isolation layer are one or more of a naphthalene-based high-efficiency water reducing agent, an aliphatic high-efficiency water reducing agent, an amino high-efficiency water reducing agent and a polycarboxylic acid high-efficiency water reducing agent; the redispersible latex powder used for the planting layer and the isolation layer is one or more of ethylene/vinyl acetate copolymer, vinyl acetate/vinyl versatate copolymer, acrylic acid copolymer, and styrene and butadiene copolymerized rubber powder.
Furthermore, the grass seeds are one or more of readily-survivable grass seeds of bermuda grass, tall fescue, ryegrass, Chinese holly and carpet grass.
The invention also provides a preparation method of the grass planting brick for roof planting, which comprises the following steps:
(1) preparing a planting layer mixture: weighing corresponding surface layer raw materials according to the formula of the planting layer, and putting the raw materials into a stirrer to be stirred to obtain a planting layer mixture;
(2) preparing an isolation layer mixture: weighing corresponding bottom layer fabrics according to the discharge of the isolation layer, and putting the bottom layer fabrics into a stirrer to be stirred to obtain isolation layer mixture;
(3) molding: respectively conveying the planting layer mixture and the isolation layer mixture to a bed charge distribution bin and a surface charge distribution bin of a press, fully distributing the planting layer mixture in a mold box, compacting to make the top of the mold box empty, distributing the isolation layer mixture on the planting layer mixture in the empty mold box, and finally performing vibration forming and demolding;
(4) and (5) maintenance: and (3) placing the demoulded brick into a curing kiln with the temperature of 25-35 ℃ and the humidity of 70-90% for curing to obtain the grass planting brick.
Further, the rotating speed of the stirrer in the step (1) and the step (2) is 10-30m/s, and the stirring time is 5-15 min.
Further, the vibration force of the vibration molding in the step (3) is 50-100KN, the vibration frequency is 2000-.
The grass planting brick for roof planting and the preparation method thereof have the following beneficial effects:
(1) the aggregate used in the planting layer of the grass planting brick is light-weight particlesGranular soil and expanded perlite, the aggregate used by the isolating layer is light ceramic sand and light ceramsite, and the light aggregate ensures that the density of the grass planting brick is only 1200-1500kg/m3The weight is light, and the load pressure of the roof is effectively reduced.
(2) The light granular soil and the expanded perlite in the raw materials of the planting layer of the grass planting brick have higher water retention rate, so that the water retention rate of the grass planting brick is higher and reaches 50-70%, the watering times in the later use process are reduced, and the water demand is reduced.
(3) The planting layer of the grass planting brick comprises planting matrix, plant seeds and nutrition required by plant growth, and the grass planting brick is only required to be paved on a roof and watered when the roof is greened, so that the structure is simple, the construction is convenient, and the construction and later maintenance cost is greatly reduced; meanwhile, the isolation layer is of a closed structure, so that the plant root system is prevented from extending to the roof, and the roof is prevented from being damaged by the plant root system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a grass-planting brick for roof planting according to the present invention;
in the figure: 1-planting layer and 2-isolating layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A grass planting brick for roof planting is shown in figure 1 and comprises a planting layer 1 positioned on a surface layer and an isolation layer 2 positioned on a bottom layer; the raw materials of the planting layer 1 comprise granular soil, cement, a water reducing agent, redispersible latex powder, humic acid, grass seeds and water; the raw materials of the isolation layer 2 comprise light ceramsite, light ceramic sand, cement, redispersible latex powder, a water reducing agent and water.
Specifically, the planting layer 1 comprises the following raw materials in parts by weight:
100 parts of granular soil;
5-15 parts of expanded perlite;
15-25 parts of cement;
0.5-2 parts of redispersible latex powder;
0.5-2 parts of humic acid;
0.2-0.5 part of grass seeds;
0.05-0.2 part of water reducing agent;
10-25 parts of water.
Specifically, the isolation layer 2 comprises the following raw materials in parts by weight:
100 parts of light ceramsite;
light ceramic sand 125-175 parts;
80-120 parts of cement;
0.5-5 parts of redispersible latex powder;
0.1-0.5 part of water reducing agent;
25-40 parts of water.
Specifically, the diameter of the granular soil is 0.3-3mm, and the bulk density is 650-900kg/m3The granular soil has rich capillary pores and certain water and fertilizer retention and ventilation functions, is a novel planting matrix, and more particularly, the granular soil used in the invention is referred to the Chinese patent with the application number of 201810766804.0; the particle size of the light ceramsite is 3-8mm, and the bulk density is 1100kg/m3The cylinder pressure strength is 8-15 MPa; the grain diameter of the light ceramic sand is 0.3-1mm, and the bulk density is 850-3The breaking rate under 28MPa is 10-20%.
The grass planting brick planting layer 1 of the invention takes granular soil and expanded perlite as main raw materials; wherein the granular soil is spherical granules with a certain cavity structure; the expanded perlite is a white granular material with a honeycomb structure inside, which is prepared by preheating and instantaneous high-temperature roasting expansion of perlite ore sand, and has very low bulk density and very strong water retention function. The planting layer prepared by the invention has lower volume weight and higher water retention rate.
The isolation layer 2 of the grass planting brick takes light ceramsite, light ceramic sand, cement and the like as main raw materials, and the light ceramsite and the light ceramic sand have lower bulk density and higher barrel pressure strength, so that the grass planting brick has higher strength and lower volume weight. Simultaneously, after being mixed, the raw materials of the isolation layer form a closed structure through the bonding effect of the cement and the redispersible latex powder, and the plant root system is prevented from extending to the roof, so that the damage of the plant root system to the roof is avoided.
Specifically, the cement used for the planting layer 1 is any one of low-alkali cement of three-waste cement, sulphoaluminate cement and glass fiber cement, and the cement used for the isolation layer 2 is ordinary portland cement.
Specifically, the water reducing agents used for the planting layer 1 and the isolation layer 2 are one or more of naphthalene-based high-efficiency water reducing agents, aliphatic high-efficiency water reducing agents, amino high-efficiency water reducing agents and polycarboxylic acid high-efficiency water reducing agents. The redispersible latex powder used by the planting layer 1 and the isolation layer 2 is one or more of ethylene/vinyl acetate copolymer, vinyl acetate/vinyl versatate copolymer, acrylic copolymer, styrene and butadiene copolymerized rubber powder; the re-dispersible latex powder has extremely outstanding bonding strength, and can improve the overall compressive strength of the grass planting brick.
Specifically, humic acid used by the planting layer 1 is a macromolecular organic substance widely existing in nature, has good physiological activity and functions of absorption, complexation, exchange and the like, is beneficial to plant growth, and can provide required nutrition for plant growth as one of raw materials of the planting layer. More specifically, the humic acid is natural humic acid or artificial humic acid.
The grass seeds are one or more of bermudagrass, festuca arundinacea, ryegrass, holly and carpet grass which are easy to survive.
The grass-planting brick for roof planting and the preparation method thereof according to the present invention will be further described with reference to the following embodiments.
Example 1
The utility model provides a roof is planted and is used grass planting brick, this grass planting brick is including planting layer 1 that is located the surface course and the isolation layer 2 that is located the bottom, wherein, plants layer 1 and includes the raw materials of following parts by weight: 100g of granular soil (0.3-1 mm); 15g of expanded perlite; 20g of sulphoaluminate cement; 1g of redispersible latex powder; 1g of humic acid; grass seeds 0.2 g; 0.1g of polycarboxylic acid water reducing agent; 15g of water. The isolating layer 2 comprises the following raw materials in parts by weight: 1000g of light ceramsite (3-7 mm); 1500g of light ceramic sand (0.3-1 mm); 1000g of cement; 10g of redispersible latex powder; 1g of polycarboxylic acid water reducing agent; 300g of water.
The preparation method of the grass planting brick for roof planting in the embodiment comprises the following steps:
(1) preparing a planting layer mixture: weighing corresponding surface layer raw materials according to the formula of the planting layer, and stirring in a stirrer with the rotation speed of 10m/s for 15min to obtain a planting layer mixture;
(2) preparing an isolation layer mixture: weighing corresponding bottom layer fabric according to the discharge of the isolation layer, and stirring for 15min in a stirrer with the rotation speed of 10m/s to obtain an isolation layer mixture;
(3) molding: respectively conveying the planting layer mixture and the isolation layer mixture to a bed charge distribution bin and a surface charge distribution bin of a press, fully distributing the planting layer mixture in a mold box, compacting to make the top of the mold box empty, distributing the isolation layer mixture on the planting layer mixture in the empty mold box, and finally performing vibration forming and demolding;
(4) and (5) maintenance: and (3) placing the demoulded brick into a curing kiln with the temperature of 35 ℃ and the humidity of 90% for curing to obtain the grass planting brick.
Example 2
The utility model provides a roof is planted and is used grass planting brick, this grass planting brick is including planting layer 1 that is located the surface course and the isolation layer 2 that is located the bottom, wherein, plants layer 1 and includes the raw materials of following parts by weight: 100g of granular soil (0.3-3 mm); 5g of expanded perlite; 25g of three-waste cement; 2g of redispersible latex powder; 2g of humic acid; grass seeds 0.5 g; 0.05g of polycarboxylic acid water reducing agent; 25g of water. The isolating layer 2 comprises the following raw materials in parts by weight: 1000g of light ceramsite (3-8 mm); 1750g of light ceramic sand (0.3-1 mm); 1200g of Portland cement; 50g of redispersible latex powder; 5g of naphthalene-based high-efficiency water reducing agent; 400g of water.
The preparation method of the grass planting brick for roof planting in the embodiment comprises the following steps:
(1) preparing a planting layer mixture: weighing corresponding surface layer raw materials according to the formula of the planting layer, and stirring in a stirrer with the rotating speed of 30m/s for 5min to obtain a planting layer mixture;
(2) preparing an isolation layer mixture: weighing corresponding bottom layer fabric according to the discharge of the isolation layer, and stirring in a stirrer with the rotation speed of 30m/s for 5min to obtain an isolation layer mixture;
(3) molding: respectively conveying the planting layer mixture and the isolation layer mixture to a bed charge distribution bin and a surface charge distribution bin of a press, fully distributing the planting layer mixture in a mold box, compacting to make the top of the mold box empty, distributing the isolation layer mixture on the planting layer mixture in the empty mold box, and finally performing vibration forming and demolding;
(4) and (5) maintenance: and (3) placing the demoulded brick into a curing kiln with the temperature of 25 ℃ and the humidity of 70% for curing to obtain the grass planting brick.
Example 3
The utility model provides a roof is planted and is used grass planting brick, this grass planting brick is including planting layer 1 that is located the surface course and the isolation layer 2 that is located the bottom, wherein, plants layer 1 and includes the raw materials of following parts by weight: 100g of granular soil (0.3-3 mm); 15g of expanded perlite; 15g of glass fiber cement; 0.5g of redispersible latex powder; 0.5g of humic acid; grass seeds 0.2 g; 0.2g of aliphatic superplasticizer; 10g of water. The isolating layer 2 comprises the following raw materials in parts by weight: 1000g of light ceramsite (3-7 mm); 1250g of light ceramic sand (0.3-1 mm); 800g of Portland cement; 5g of redispersible latex powder; 1g of polycarboxylic acid high-efficiency water reducing agent; 250g of water.
The preparation method of the grass planting brick for roof planting in the embodiment comprises the following steps:
(1) preparing a planting layer mixture: weighing corresponding surface layer raw materials according to the formula of the planting layer, and stirring in a stirrer with the rotation speed of 10m/s for 15min to obtain a planting layer mixture;
(2) preparing an isolation layer mixture: weighing corresponding bottom layer fabric according to the discharge of the isolation layer, and stirring in a stirrer with the rotation speed of 30m/s for 5min to obtain an isolation layer mixture;
(3) molding: respectively conveying the planting layer mixture and the isolation layer mixture to a bed charge distribution bin and a surface charge distribution bin of a press, fully distributing the planting layer mixture in a mold box, compacting to make the top of the mold box empty, distributing the isolation layer mixture on the planting layer mixture in the empty mold box, and finally performing vibration forming and demolding;
(4) and (5) maintenance: and (3) placing the demoulded brick into a curing kiln with the temperature of 30 ℃ and the humidity of 80% for curing to obtain the grass planting brick.
The mechanical properties and water retention effect of the grass-planting bricks prepared in examples 1 to 3 were measured, and the results are shown in table 1.
TABLE 1 Performance test results of grass-planting bricks for roof planting
As can be seen from Table 1, the grass planting brick for roof planting of the invention uses the granular soil and the expanded perlite as the main raw materials of the planting layer and the light ceramsite and the light ceramic sand as the main aggregate of the isolation layer, which are both light aggregates with lower self volume weight, so that the prepared grass planting brick has lower volume weight which is only 1200-1500 kg/m-3The load pressure on the roof can be reduced. Meanwhile, the granular soil and the expanded perlite on the planting layer part have certain pore structures, so that the planting layer has higher water retention rate which reaches 50-70 percent. On the other hand, the planting layer and the isolation layer both adopt aggregate raw materials with higher strength, so that the barrel pressure strength of the grass planting brick reaches 5-10MPa, and the service life of the grass planting brick is prolonged.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. The grass planting brick for roof planting is characterized by comprising a planting layer and an isolation layer, wherein the planting layer is positioned on a surface layer, the isolation layer is positioned on a bottom layer, and raw materials of the planting layer comprise granular soil, cement, a water reducing agent, redispersible latex powder, humic acid, grass seeds and water; the raw materials of the isolation layer comprise light ceramsite, light ceramic sand, cement, redispersible latex powder, a water reducing agent and water.
2. The grass planting brick for roof planting according to claim 1, wherein the planting layer comprises the following raw materials in parts by weight:
100 parts of granular soil;
5-15 parts of expanded perlite;
15-25 parts of cement;
0.5-2 parts of redispersible latex powder;
0.5-2 parts of humic acid;
0.2-0.5 part of grass seeds;
0.05-0.2 part of water reducing agent;
10-25 parts of water.
3. The grass planting brick for roof planting according to claim 2, wherein the isolation layer comprises the following raw materials in parts by weight:
100 parts of light ceramsite;
light ceramic sand 125-175 parts;
80-120 parts of cement;
0.5-5 parts of redispersible latex powder;
0.1-0.5 part of water reducing agent;
25-40 parts of water.
4. The grass planting brick for roof planting as claimed in claim 3, wherein the diameter of the granular soil is 0.3-3mm, and the bulk density is 650-900kg/m3(ii) a The particle size of the light ceramsite is 3-8mm, and the bulk density is 1100kg/m3(ii) a The particle size of the light ceramic sand is 0.3-1mm, and the bulk density is 850-1150kg/m3。
5. The grass planting brick for roof planting according to claim 3, wherein the cement used for the planting layer is any one of low-alkali cement of three-waste cement, sulphoaluminate cement and glass fiber cement, and the cement used for the isolation layer is ordinary portland cement.
6. The grass planting brick for roof planting according to claim 3, wherein the water reducing agent used for the planting layer and the isolation layer is one or more of a naphthalene-based high-efficiency water reducing agent, an aliphatic high-efficiency water reducing agent, an amino high-efficiency water reducing agent and a polycarboxylic acid high-efficiency water reducing agent;
the redispersible latex powder used by the planting layer and the isolation layer is one or more of ethylene/vinyl acetate copolymer, vinyl acetate/vinyl versatate copolymer, acrylic acid copolymer, and styrene and butadiene copolymerized rubber powder.
7. The grass planting brick for roof planting according to claim 3, wherein the grass seeds are one or more of easily-survivable grass seeds of bermudagrass, tall fescue, ryegrass, Chinese holly and carpet grass.
8. A method of making a grass-planting brick for roof planting according to any one of claims 1 to 7, comprising the steps of:
(1) preparing a planting layer mixture: weighing corresponding surface layer raw materials according to the formula of the planting layer, and putting the raw materials into a stirrer to be stirred to obtain a planting layer mixture;
(2) preparing an isolation layer mixture: weighing corresponding bottom layer fabrics according to the discharge of the isolation layer, and putting the bottom layer fabrics into a stirrer to be stirred to obtain isolation layer mixture;
(3) molding: respectively conveying the planting layer mixture and the isolation layer mixture to a bed charge distribution bin and a surface charge distribution bin of a press, fully distributing the planting layer mixture in a mold box, compacting to make the top of the mold box empty, distributing the isolation layer mixture on the planting layer mixture in the empty mold box, and finally performing vibration forming and demolding;
(4) and (5) maintenance: and (3) placing the demoulded brick into a curing kiln with the temperature of 25-35 ℃ and the humidity of 70-90% for curing to obtain the grass planting brick.
9. The method for preparing a grass-planting brick for roof planting according to claim 8, wherein the rotation speed of the stirrer in the step (1) and the step (2) is 10-30m/s, and the stirring time is 5-15 min.
10. The method for preparing a grass-planting brick for roof planting as claimed in claim 8, wherein the vibration molding in step (3) has an excitation force of 50-100KN, a vibration frequency of 2000-.
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| CN201811122095.9A CN110959423A (en) | 2018-09-26 | 2018-09-26 | Grass-planting brick for roof planting and preparation method thereof |
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Application publication date: 20200407 |