Vegetation concrete ecological brick, preparation method thereof and ecological slope protection

Abstract

The present invention proposes a planted concrete ecological brick, a preparation method thereof and an ecological slope protection, and relates to the technical field of prefabricated blocks. The planted concrete ecological brick comprises a bottom concrete layer, a planted particle layer, a top concrete layer and a nutrient soil layer stacked in sequence from bottom to top; wherein the bottom concrete layer comprises bottom concrete particles, the planted particle layer comprises planted particles, and the top concrete layer comprises top concrete particles. In the technical scheme of the present invention, by using bottom concrete particles, planted particles and top concrete particles, gaps can be formed, thereby increasing the void ratio of the planted concrete ecological brick, ensuring the compressive strength and flexural strength while reducing the deadweight of the planted concrete ecological brick, and preventing the internal moisture of the planted concrete ecological brick from being too high, thereby having anti-frost heave performance; by setting a nutrient soil layer, plants such as herbs, vines or shrubs can be adaptively planted on the surface of the nutrient soil layer according to demand.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated blocks, and in particular to a kind of vegetated concrete ecological brick, a preparation method thereof and an ecological slope protection. Background Art

[0002] Slope protection refers to a series of engineering measures and technical means taken on slopes to prevent geological disasters such as soil erosion and landslides and to protect the safety of infrastructure such as roads, railways, and dams.

[0003] Traditional slope protection technologies such as arched skeletons, frame beams, and mortar-laid stone have achieved remarkable results in slope erosion resistance in the early stages of construction, but they over-pursue strength and efficacy, resulting in poor ecological and environmental effects. Moreover, as time goes by, concrete ages and steel bars corrode, resulting in reduced strength or even damage, creating new hidden dangers to road safety.

[0004] Traditional hard and dense slope protection projects have good physical properties. They are high in strength, erosion resistance, impact resistance, and freeze-thaw resistance, and can effectively meet the functional requirements of slope protection. However, the surface of hard and dense slope protection projects is gray, the texture is hard, and few plants survive. The visual and tactile effects are poor, giving people a feeling of being raw, cold, and hard.

[0005] Traditional slope protection materials such as concrete and stone, although they have high strength and stability, often cause damage to the local ecological environment and are difficult to degrade. Summary of the invention

[0006] The main purpose of the present invention is to provide a kind of vegetated concrete ecological brick, its preparation method and ecological slope protection, aiming to solve the problem that the existing slope protection materials cause damage to the ecological environment.

[0007] To achieve the above-mentioned purpose, the present invention provides a planted concrete ecological brick, comprising a bottom concrete layer, a planted particle layer, a top concrete layer and a nutrient soil layer stacked in sequence from bottom to top;

[0008] Wherein, the bottom concrete layer includes bottom concrete particles, the vegetation particle layer includes vegetation particles, and the top concrete layer includes top concrete particles.

[0009] In one embodiment, the nutrient soil layer includes coconut husk, perlite and fertilizer;

[0010] Wherein, the mass ratio of the coconut bran to the perlite is (2-4):1; and / or,

[0011] The porosity of the nutrient soil layer is 20% to 25%.

[0012] In one embodiment, the diameter of the bottom concrete particles is 10 mm to 15 mm; and / or,

[0013] The diameter of the vegetation particles is 15 mm to 20 mm; and / or,

[0014] The diameter of the top concrete particles is 20 mm to 25 mm.

[0015] In one embodiment, the surface of the nutrient soil layer further includes a grass seed layer, and the grass seed layer includes grass seeds, nutrient soil and fertilizer; and / or,

[0016] The bottom concrete particles include Portland cement, polypropylene fibers and mortar glue; and / or,

[0017] The top concrete granules include Portland cement, polypropylene fibers and mortar glue.

[0018] In one embodiment, the thickness of the nutrient soil layer is 20 mm to 40 mm; and / or,

[0019] The thickness of the vegetation particle layer is 30 mm to 40 mm; and / or,

[0020] The thickness of the bottom concrete layer is 10 mm to 30 mm; and / or,

[0021] The thickness of the top concrete layer is 20 mm to 50 mm.

[0022] The present invention also provides a method for preparing a biodegradable concrete ecological brick, comprising the following steps:

[0023] A bottom concrete layer is prepared by using concrete, which is left to stand for a while, and vegetation particles are laid on the bottom concrete layer to form a vegetation particle layer;

[0024] Allowing the soil to stand for a second time, and laying concrete on the vegetation particle layer to form a top concrete layer;

[0025] The concrete is left to stand for three times, and nutrient soil is laid on the top concrete layer to form a nutrient soil layer, and then maintained to obtain a vegetation concrete ecological brick.

[0026] In one embodiment, the curing step comprises the following steps:

[0027] After sowing grass seeds on the nutrient soil layer, maintenance is carried out.

[0028] In one embodiment, the standing time is 3 to 5 minutes; and / or,

[0029] The second resting time is 5 to 10 minutes; and / or,

[0030] The three standing times are 12 to 18 hours.

[0031] In one embodiment, the curing temperature is 18°C ​​to 25°C; and / or,

[0032] Curing humidity is greater than 95%; and / or,

[0033] The maintenance time is 15 to 20 days.

[0034] The present invention also provides an ecological slope protection, including a vegetation concrete ecological brick;

[0035] The vegetative concrete ecological brick is the vegetative concrete ecological brick as described above, or the vegetative concrete ecological brick prepared by the vegetative concrete ecological brick preparation method as described above.

[0036] In the technical solution of the present invention, by adopting a bottom concrete layer and a top concrete layer, the compressive strength and flexural strength of the vegetation concrete eco-brick can be improved; by adopting bottom concrete particles, vegetation particles and top concrete particles, gaps can be formed between vegetation particles, between concrete particles, and between vegetation particles and concrete particles, thereby improving the porosity of the vegetation concrete eco-brick, ensuring the compressive strength and flexural strength while reducing the self-weight of the vegetation concrete eco-brick, and preventing the vegetation concrete eco-brick from having excessive moisture inside, thereby having anti-frost heave performance; by setting a nutrient soil layer, plants such as herbs, vines or shrubs can be adaptively planted on the surface of the nutrient soil layer according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A cross-sectional view of an embodiment of the vegetation concrete ecological brick proposed by the present invention;

[0039] Figure 2 A cross-sectional view of another embodiment of the vegetation concrete ecological brick proposed by the present invention;

[0040] Figure 3 A cross-sectional view of another embodiment of the vegetation concrete ecological brick proposed by the present invention;

[0041] Figure 4 This is a graph showing the results of a vegetative test of a vegetative concrete eco-brick in Example 16 of the present invention;

[0042] Figure 5This is a diagram showing the plant growth experimental results of the plant-growing concrete eco-bricks in the experimental group and the control group in Example 16 of the present invention;

[0043] Figure 6 This is a diagram showing the plant growth experimental results of the experimental group in Example 16 of the present invention;

[0044] Figure 7 This is a graph showing the results of a steep slope plant growth experiment using the vegetation concrete eco-bricks in Example 16 of the present invention.

[0045] Description of Figure Numbers

[0046] 100. Vegetative concrete ecological bricks; 1. Bottom concrete layer; 2. Vegetative particle layer; 3. Top concrete layer; 4. Nutrient soil layer; 5. Grass seed layer; 6. Covering soil layer.

[0047] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0048] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0049] It should be noted that, in the embodiments, those without specifying specific conditions are carried out according to normal conditions or conditions recommended by the manufacturer. Those without specifying the manufacturer of reagents or instruments used are conventional products that can be purchased commercially. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, and "A and / or B" is taken as an example, including schemes A, B, or A and B that meet the same time. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of the technical schemes is contradictory or cannot be achieved, it should be considered that the combination of such technical schemes does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work, all belong to the scope of protection of the present invention.

[0050] Traditional hard and dense slope protection projects have good physical properties. They are high in strength, erosion resistance, impact resistance, and freeze-thaw resistance, and can effectively meet the functional requirements of slope protection. However, the surface of hard and dense slope protection projects is gray, the texture is hard, and few plants survive. The visual and tactile effects are poor, giving people a feeling of being raw, cold, and hard.

[0051] Traditional slope protection materials such as concrete and stone, although they have high strength and stability, often cause damage to the local ecological environment and are difficult to degrade.

[0052] In view of this, see Figure 1 The present invention proposes a planted concrete ecological brick, comprising a bottom concrete layer, a plant particle layer, a top concrete layer and a nutrient soil layer stacked in sequence from bottom to top; wherein the bottom concrete layer comprises bottom concrete particles, the plant particle layer comprises plant particles, and the top concrete layer comprises top concrete particles.

[0053] In the technical solution of the present invention, by adopting a bottom concrete layer and a top concrete layer, the compressive strength and flexural strength of the vegetation concrete eco-brick can be improved; by adopting bottom concrete particles, vegetation particles and top concrete particles, gaps can be formed between vegetation particles, between concrete particles, and between vegetation particles and concrete particles, thereby improving the porosity of the vegetation concrete eco-brick, ensuring the compressive strength and flexural strength while reducing the self-weight of the vegetation concrete eco-brick, and preventing the vegetation concrete eco-brick from having excessive moisture inside, thereby having anti-frost heave performance; by setting a nutrient soil layer, plants such as herbs, vines or shrubs can be adaptively planted on the surface of the nutrient soil layer according to needs.

[0054] It should be noted that the vegetation particles include cement, fly ash, lime, sawdust, rice husks, biochar, jute fiber, water-absorbing resin and coated slow-release fertilizer; wherein, through the combination of cement and jute fiber, the planting particles as a whole have higher strength and can resist water impact and wave washing; through the combination of cement, jute fiber and water-absorbing resin, the planting particles as a whole are porous inside, so that they can absorb and store a large amount of water, and slowly release it for plant growth needs; through the combination of water-absorbing resin and coated slow-release fertilizer, organic humus required for plant growth can be adsorbed, and nutrients can be supplied for a long time; the structural type of the vegetation concrete eco-brick can be I-shaped, concave-convex, round hole or arc type, and the specific structural type is not limited.

[0055] In one embodiment, the nutrient soil layer includes coconut husk, perlite and fertilizer;

[0056] Wherein, the mass ratio of the coconut bran to the perlite is (2-4):1; and / or,

[0057] The porosity of the nutrient soil layer is 20% to 25%.

[0058] In the technical solution of the present invention, the nutrient soil layer is prepared by using coconut bran, perlite and fertilizer. Since there are a large number of voids in coconut bran and perlite, the void ratio of natural coconut bran is above 80%, and the void ratio of perlite is above 70%, so that the nutrient soil layer has reorganized voids, which is convenient for the root system of plants to breathe, and has a certain water retention, which is conducive to plant growth; and the void structure in the nutrient soil layer is conducive to the root system of plants to expand to the surroundings, increasing the contact area between the root system and the soil, so as to better absorb water and nutrients. In addition, a good soil structure also helps to prevent the occurrence of root diseases; by adding fertilizer to the nutrient soil layer, not only the nutrient elements required by the plant are directly provided, but also by mixing with coconut bran, perlite and other materials, the soil structure can be improved, so that the nutrient release is more uniform and stable, and the requirements for plant growth can be maintained for a long time; the specific ratio of the fertilizer can be adjusted according to the planted plants, thereby increasing the application range of the plant-growing concrete ecological brick.

[0059] In one embodiment, the diameter of the bottom concrete particles is 10 mm to 15 mm; and / or,

[0060] The diameter of the vegetation particles is 15 mm to 20 mm; and / or,

[0061] The diameter of the top concrete particles is 20 mm to 25 mm.

[0062] In the technical solution of the present invention, by adjusting the diameter of the bottom concrete particles to 10mm to 15mm, the voids in the bottom concrete layer can be adjusted to form smaller voids, thereby improving the water retention rate of the bottom concrete layer; by adjusting the diameter of the vegetation particles and / or the diameter of the top concrete particles, the void ratio of the vegetation particle layer and / or the void ratio of the top concrete layer can be ensured to be large, so that the accumulated water can flow out quickly from the large voids, thereby keeping the interior of the vegetation concrete ecological brick relatively moist. The diameter of the bottom concrete particles, the diameter of the vegetation particles and the diameter of the top concrete particles can be defined separately or simultaneously. When defined simultaneously, the aperture of the vegetation concrete ecological brick gradually decreases from top to bottom, the aperture of the shallow layer is large, and the aperture of the deep layer is small. The accumulated water in the shallow layer can penetrate into the deep layer, reducing the shallow water accumulation and preventing root rot. At the same time, the humidity of the vegetation concrete ecological brick is increased, thereby improving the survival rate of plants.

[0063] In one embodiment, see Figure 2 , a grass seed layer and a covering soil layer are sequentially stacked on the surface of the nutrient soil layer, wherein the grass seed layer comprises grass seeds, nutrient soil and fertilizer; and / or,

[0064] The bottom concrete particles include water, Portland cement, polypropylene fibers and mortar glue; and / or,

[0065] The top concrete granules include water, Portland cement, polypropylene fibers and mortar glue.

[0066] In the technical solution of the present invention, by sowing grass seeds on the surface of the nutrient soil layer, vegetation can be quickly grown to stabilize the internal structure of the vegetation concrete eco-brick and prevent soil erosion. In some embodiments of the present invention, the spreading amount of the grass seeds is 0.05kg / m 2 .

[0067] Specifically, in some embodiments of the present invention, in the bottom concrete particles and the top concrete particles, the water-cement ratio (the mass ratio of water to silicate cement) is 0.25-0.28, the mass proportion of silicate cement is 35%-70%, the mass proportion of polypropylene fiber is 0.07%-0.16%, and the mass proportion of mortar glue is 0.05%-0.20%.

[0068] In one embodiment, the thickness of the nutrient soil layer is 20 mm to 40 mm; and / or,

[0069] The thickness of the vegetation particle layer is 30 mm to 40 mm; and / or,

[0070] The thickness of the bottom concrete layer is 10 mm to 30 mm; and / or,

[0071] The thickness of the top concrete layer is 20 mm to 50 mm.

[0072] In the technical solution of the present invention, by adjusting the thickness of the nutrient soil layer to 20mm-40mm, it can meet the soil needs of the initial growth of plants without increasing the structural burden due to excessive thickness; by adjusting the thickness of the vegetation particle layer to 30mm-40mm, the water holding capacity and air permeability of the soil are further enhanced, and the development of plant roots is promoted; by adjusting the thickness of the bottom concrete layer and / or the thickness of the top concrete layer to 20mm-50mm, it not only plays a role in protecting the internal structure, but also can quickly penetrate rainwater and reduce surface runoff.

[0073] The present invention also provides a method for preparing a biodegradable concrete ecological brick, comprising the following steps:

[0074] A bottom concrete layer is prepared by using concrete, which is left to stand for a while, and vegetation particles are laid on the bottom concrete layer to form a vegetation particle layer;

[0075] Allowing the soil to stand for a second time, and laying concrete on the vegetation particle layer to form a top concrete layer;

[0076] The concrete is left to stand for three times, and nutrient soil is laid on the top concrete layer to form a nutrient soil layer, and then maintained to obtain a vegetation concrete ecological brick.

[0077] In the technical solution of the present invention, by laying the vegetation particles after one standing, the vegetation particles can be laid on the bottom concrete layer before the bottom concrete layer solidifies, so that the interface between the bottom concrete layer and the vegetation particle layer is adhered to each other, and the bonding strength inside the bottom concrete layer is improved; by laying the top concrete layer after two standings, so that the interface between the vegetation particle layer and the bottom concrete layer is adhered to each other, and at the same time, under the action of gravity, the bonding strength between the bottom concrete layer and the vegetation particle layer can be further improved; by laying the nutrient soil layer after three standings, the top concrete layer can be solidified to support the nutrient soil layer.

[0078] In some embodiments of the present invention, the vegetation concrete eco-brick is also subjected to static pressure during the three static standing times, so as to further increase the bonding strength between the bottom concrete layer and the vegetation particle layer and reduce the looseness of the internal structure of the vegetation concrete eco-brick.

[0079] In one embodiment, the curing step includes the following steps: curing after sowing grass seeds on the nutrient soil layer. In the technical solution of the present invention, by sowing grass seeds before curing, sufficient humidity can be provided during the curing process, and the germination of grass seeds can be promoted while curing the concrete.

[0080] In one embodiment, the standing time is 3 to 5 minutes; and / or,

[0081] The second resting time is 5 to 10 minutes; and / or,

[0082] The three standing times are 12 to 18 hours.

[0083] In the technical solution of the present invention, by adjusting the first standing time to 3min to 5min, the bottom concrete layer is partially solidified, which promotes the mutual adhesion of the bottom concrete layer, thereby reducing the gap in the bottom concrete layer; by adjusting the second standing time to 5min to 10min, it can further promote the adhesion of the bottom concrete layer and the top concrete layer, and at the same time promote the adhesion of the vegetation particle layer to the bottom concrete layer and the top concrete layer respectively, thereby improving the overall structural stability of the vegetation concrete eco-brick; by adjusting the third standing time to 12h to 18h, the top concrete layer can be completely solidified to support the nutrient soil layer.

[0084] In one embodiment, the curing temperature is 18°C ​​to 25°C; and / or,

[0085] Curing humidity is greater than 95%; and / or,

[0086] The maintenance time is 15 to 20 days.

[0087] In the technical solution of the present invention, by adjusting the curing temperature, the cracking of the concrete in the vegetation concrete eco-brick under high temperature is reduced, and at the same time, a suitable temperature is provided for the germination and growth of seeds in the vegetation concrete eco-brick; by adjusting the curing humidity, the drying and cracking of the concrete in the vegetation concrete eco-brick is reduced, and at the same time, a suitable humidity is provided for the germination and growth of seeds in the vegetation concrete eco-brick; by adjusting the curing time, the hardening of the concrete is promoted, and the compressive strength and flexural strength of the vegetation concrete eco-brick are improved.

[0088] The present invention also proposes an ecological slope protection, including a vegetated concrete ecological brick; the vegetated concrete ecological brick is the vegetated concrete ecological brick as described above, or a vegetated concrete ecological brick prepared by the preparation method of the vegetated concrete ecological brick as described above.

[0089] Since the present ecological slope protection adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0090] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only used to explain the present invention, and are not used to limit the present invention.

[0091] Unless otherwise specified, the materials used in the embodiments of the present invention are commercially available.

[0092] The vegetation particles were purchased from Ruipaier (Yichang) Technology Group Co., Ltd.

[0093] Example 1

[0094] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0095] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 10 mm, the cement particle content is 50% to 55%, the mortar content is 0.05%, and the polypropylene fiber content is 0.1%.

[0096] Example 2

[0097] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0098] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 15 mm, the cement particle content is 60% to 65%, the mortar content is 0.1%, and the polypropylene fiber content is 0.13%.

[0099] Example 3

[0100] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0101] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 20 mm, the cement particle content is 70% to 75%, the mortar content is 0.15%, and the polypropylene fiber content is 0.16%.

[0102] Example 4

[0103] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0104] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 10 mm, the cement particle content is 50% to 55%, the mortar content is 0.1%, and the polypropylene fiber content is 0.13%.

[0105] Example 5

[0106] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0107] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 15 mm, the cement particle content is 60% to 65%, the mortar content is 0.15%, and the polypropylene fiber content is 0.16%.

[0108] Example 6

[0109] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0110] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 20 mm, the cement particle content is 70% to 75%, the mortar content is 0.05%, and the polypropylene fiber content is 0.1%.

[0111] Example 7

[0112] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0113] The water-cement ratio of the concrete is 0.27, the diameter of the concrete particles is 10 mm, the cement particle content is 60% to 65%, the mortar content is 0.05%, and the polypropylene fiber content is 0.16%.

[0114] Example 8

[0115] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0116] The water-cement ratio of the concrete is 0.27, the diameter of the concrete particles is 15 mm, the cement particle content is 70% to 75%, the mortar content is 0.1%, and the polypropylene fiber content is 0.1%.

[0117] Example 9

[0118] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0119] The water-cement ratio of the concrete is 0.27, the diameter of the concrete particles is 20 mm, the cement particle content is 50% to 55%, the mortar content is 0.15%, and the polypropylene fiber content is 0.13%.

[0120] Example 10

[0121] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0122] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 10 mm, the cement particle content is 70% to 75%, the mortar content is 0.15%, and the polypropylene fiber content is 0.1%.

[0123] Embodiment 11

[0124] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0125] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 15 mm, the cement particle content is 50% to 55%, the mortar content is 0.05%, and the polypropylene fiber content is 0.13%.

[0126] Example 12

[0127] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0128] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 20 mm, the cement particle content is 60% to 65%, the mortar content is 0.1%, and the polypropylene fiber content is 0.16%.

[0129] Embodiment 13

[0130] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0131] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 10 mm, the cement particle content is 60% to 65%, the mortar content is 0.15%, and the polypropylene fiber content is 0.1%.

[0132] Embodiment 14

[0133] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0134] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 15 mm, the cement particle content is 70% to 75%, the mortar content is 0.05%, and the polypropylene fiber content is 0.13%.

[0135] Embodiment 15

[0136] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0137] The water-cement ratio of the concrete is 0.26, the diameter of the concrete particles is 20 mm, the cement particle content is 50% to 55%, the mortar content is 0.1%, and the polypropylene fiber content is 0.16%.

[0138] Example 16

[0139] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0140] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 10 mm, the cement particle content is 70% to 75%, the mortar content is 0.1%, and the polypropylene fiber content is 0.16%.

[0141] Embodiment 17

[0142] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0143] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 15 mm, the cement particle content is 50% to 55%, the mortar content is 0.15%, and the polypropylene fiber content is 0.1%.

[0144] Embodiment 18

[0145] This embodiment proposes a planted concrete ecological brick, which includes, from bottom to top, a bottom concrete layer, a plant particle layer, a top concrete layer, a nutrient soil layer, a grass seed layer, and a covering soil layer.

[0146] The water-cement ratio of the concrete is 0.25, the diameter of the concrete particles is 20 mm, the cement particle content is 60% to 65%, the mortar content is 0.05%, and the polypropylene fiber content is 0.13%.

[0147] In the vegetation concrete ecological bricks proposed in Examples 1 to 18, each bottom concrete layer and top concrete layer respectively uses the same concrete particles, and their components are shown in Table 1.

[0148] Table 1 Components of concrete particles in the plant-based concrete eco-bricks proposed in Examples 1 to 18

[0149]

[0150]

[0151] Performance Testing

[0152] The compressive strength and flexural strength of the vegetation concrete ecological bricks provided in Examples 1 to 18 were tested with reference to GB / T50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete";

[0153] The continuous porosity of the vegetation concrete was measured with reference to the specification “Permeable Concrete and Its Application Technology”.

[0154] The test results are shown in Table 2.

[0155] Table 2 Performance test results of the vegetation concrete eco-bricks provided in Examples 1 to 18

[0156]

[0157]

[0158] Vegetation experiment

[0159] The nutrient soil layer of the vegetated concrete eco-brick provided in Example 16 was sown with Elymus dahliae seeds, and then covered with a layer of nutrient soil as the experimental group; at the same time, a control group was set up, in which Elymus dahliae seeds were sown in a natural environment, and then covered with a layer of nutrient soil. The bricks were watered and maintained once in the morning and evening every day, and continuous observation was performed. The results are as follows Figure 3 shown.

[0160] according to Figure 4 It can be found that the seeds of Elymus salsa began to germinate on the 5th day after sowing; after 7 days, the germinated seeds continued to grow and a large number of them continued to sprout, most of which were between 20mm and 40mm in height; by the 12th day, the seeds had fully germinated. The growth comparison of the experimental group and the control group is shown in the figure below. Figure 5 As shown in the figure, the plants cultivated by the vegetation concrete bricks were significantly better than those of the control group in terms of germination rate and growth status. Figure 6 As shown, about 60% of the grass roots have penetrated deeply into the test block.

[0161] Steep slope plant growth experiment

[0162] Take 4 pieces of the vegetation concrete ecological bricks provided in Example 16, cultivate herbs indoors in advance, and then transfer them to the outdoor experimental site after 14 days. The four ecological bricks are numbered 1 to 4, wherein the bottoms of the ecological bricks No. 1 to 3 are naturally placed against the bottom of the rock slope at an angle of 60° to 70°, and the ecological brick No. 4 is placed flat on the side to compare the rainfall erosion resistance performance with the other three ecological bricks.

[0163] Water once in the morning and afternoon every day, and water slowly and thoroughly in the order of test block numbers according to 1234-1234-1234 three times, with a total of 6.5L of water required each time. To facilitate thorough watering, lay the bricks flat first, and then let them stand for 5 minutes after watering before resuming the tilted position.

[0164] After 4 days of maintenance, the experimental results are as follows Figure 7 shown.

[0165] according to Figure 7 It can be found that the soil is very moist after watering. After observation, the grass is not washed away. Except for slight erosion, the surface soil matrix does not fall off and has a certain resistance to erosion.

[0166] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A kind of vegetated concrete ecological brick, characterized in that: It includes a bottom concrete layer, a vegetation particle layer, a top concrete layer and a nutrient soil layer stacked in sequence from bottom to top; Wherein, the bottom concrete layer includes bottom concrete particles, the vegetation particle layer includes vegetation particles, and the top concrete layer includes top concrete particles.

2. The vegetation concrete ecological brick according to claim 1, characterized in that: The nutrient soil layer comprises coconut husk, perlite and fertilizer; Wherein, the mass ratio of the coconut bran to the perlite is (2-4):1; and / or, The porosity of the nutrient soil layer is 20% to 25%.

3. The vegetation concrete ecological brick according to claim 1, characterized in that: The diameter of the bottom concrete particles is 10 mm to 15 mm; and / or, The diameter of the vegetation particles is 15 mm to 20 mm; and / or, The diameter of the top concrete particles is 20 mm to 25 mm.

4. The vegetation concrete ecological brick according to claim 1, characterized in that: The surface of the nutrient soil layer is also stacked with a grass seed layer and a covering soil layer in sequence, wherein the grass seed layer includes grass seeds, nutrient soil and fertilizer; and / or, The bottom concrete particles include Portland cement, polypropylene fibers and mortar glue; and / or, The top concrete granules include Portland cement, polypropylene fibers and mortar glue.

5. The vegetation concrete ecological brick according to claim 1, characterized in that: The thickness of the nutrient soil layer is 20 mm to 40 mm; and / or, The thickness of the vegetation particle layer is 30 mm to 40 mm; and / or, The thickness of the bottom concrete layer is 10 mm to 30 mm; and / or, The thickness of the top concrete layer is 20 mm to 50 mm.

6. A method for preparing a biodegradable concrete ecological brick, characterized in that: The following steps are involved: A bottom concrete layer is prepared by using concrete, which is left to stand for a while, and vegetation particles are laid on the bottom concrete layer to form a vegetation particle layer; Allowing the soil to stand for a second time, and laying concrete on the vegetation particle layer to form a top concrete layer; The concrete is left to stand for three times, and nutrient soil is laid on the top concrete layer to form a nutrient soil layer, and then maintained to obtain a vegetation concrete ecological brick.

7. The method for preparing the vegetation concrete ecological brick according to claim 6, characterized in that: The maintenance procedure includes the following steps: After sowing grass seeds on the nutrient soil layer, maintenance is carried out.

8. The method for preparing the vegetation concrete ecological brick according to claim 6, characterized in that: The standing time is 3 to 5 minutes; and / or, The second resting time is 5 to 10 minutes; and / or, The three standing times are 12h to 18h.

9. The method for preparing the vegetation concrete ecological brick according to claim 6, characterized in that: The curing temperature is 18℃~25℃; and / or, Curing humidity is greater than 95%; and / or, The maintenance time is 15 to 20 days.

10. An ecological slope protection, characterized in that: Including vegetated concrete eco-bricks; The vegetative concrete ecological brick is the vegetative concrete ecological brick as described in any one of claims 1 to 6, or the vegetative concrete ecological brick prepared by the preparation method of the vegetative concrete ecological brick as described in claims 7 to 9.

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