CN114538864A - High-strength zeolite porous plant-growing concrete and preparation method thereof - Google Patents
High-strength zeolite porous plant-growing concrete and preparation method thereof Download PDFInfo
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- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 76
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000010457 zeolite Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000004568 cement Substances 0.000 claims abstract description 48
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 36
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims abstract description 19
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims description 18
- 238000010521 absorption reaction Methods 0.000 claims description 10
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- 230000008635 plant growth Effects 0.000 claims description 9
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- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
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- 241001474374 Blennius Species 0.000 description 1
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
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- 239000010410 layer Substances 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 229920005552 sodium lignosulfonate Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
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Images
Classifications
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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
- C04B28/06—Aluminous 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/047—Zeolites
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses high-strength zeolite porous plant-growing concrete and a preparation method thereof, wherein the porous plant-growing concrete is prepared from the following raw materials in parts by weight: 1050 parts of 900-1050 parts of zeolite, 320 parts of 260-320 parts of cement, 4-15 parts of reinforcing agent and 130 parts of 120-130 parts of water; the reinforcing agent consists of sodium nitrite, a polycarboxylic acid high-efficiency water reducing agent and lignosulfonate in a mass ratio of 1:1-3: 2-5. According to the invention, zeolite is used as a coarse aggregate, low-alkalinity sulphoaluminate cement is used as a cementing material, and in order to improve the mechanical property of zeolite plant-growing concrete and reduce the pH value of a pore solution, a special reinforcing agent for plant-growing concrete is adopted to replace part of low-alkalinity sulphoaluminate cement, so that the zeolite plant-growing concrete has good mechanical property, and can better meet the requirement of river bank protection in south regions.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to high-strength zeolite porous plant-growing concrete and a preparation method thereof.
Background
Compared with common concrete, the porous plant-growing concrete has the biggest characteristic that the interior is mostly of a porous structure, can fill soil and ensure that plant roots can extend inside to meet growth requirements to form good adsorption and filtration effects. Therefore, the porous plant-growing concrete has certain water quality purification capacity, is a good bank protection material, and can meet the technical requirements and ecological requirements of river bank protection.
River bank protection is one of effective measures for intercepting surface water flow and strengthening urban river nursing, and simultaneously solving the problem of water pollution and beautifying the surrounding environment of the river is an urgent need for social and economic development, ecological civilized construction and improvement of life quality. The plant-growing concrete is applied to the bank protection engineering, can meet the functional requirements of river bank protection, plays the roles of flood control, dike fixation and the like, can meet the requirements of ecological environment, and is integrated with the surrounding environment. The higher porosity of the plant-growing concrete can provide a growing space for plants and enable root systems to be crossed, and the better water permeability enables the plants to conveniently exchange nutrients with the surrounding environment and realize flood stagnation and withering compensation of the embankment. The improvement of the alkali environment inside the plant concrete and the selection of plants on the surface of the concrete are the key points of the plant concrete revetment technology. The pH value of the soil environment suitable for the growth of plants is 4-10, the pH value of the concrete is 12-13, and if the alkalinity is not effectively controlled, the normal growth of the plants can be influenced. Therefore, the development of porous vegetation bank protection concrete with plant affinity is very necessary. The mixing proportion of the plant-growing concrete is optimized, the characteristics of the porous structure of the porous plant-growing concrete are exerted, the application research of the plant-growing ecological concrete revetment is developed, the technical research of the ecological revetment is promoted to a certain extent, the engineering application is realized, and the research on the plant-growing concrete is popular in recent years.
For example, chinese patent CN 108101452 a discloses a plant growing type porous concrete suitable for plant growth, which comprises porous concrete with a certain thickness and mixed fine loam covered on the surface layer of the porous concrete, wherein the raw materials of the porous concrete comprise the following components by volume density: cement 150-325kg/m31495-1550kg/m ceramic particle 340-86kg/m of fly ash310-12kg/m limestone powder3100-100 kg/m fine loam32-3kg/m of plant ash315-30kg/m of rice husk carbon32.5-4kg/m of water reducing agent3 EVA latex powder 10-20kg/m317-40kg/m of styrene-butadiene rubber powder3 13-23kg/m polyacrylate emulsion320-30kg/m of organic compost315-20kg/m of vermiculite32-3kg/m of seaweed powder30.5-0.7kg/m of tea dregs32-3kg/m of neem cake3 0.7-1.2kg/m of polyacrylamide30.5-1kg ferrous sulfate
m 3 3-4kg/m of modified towel gourd fiber30.8-1kg/m of organic silicon defoaming agent360-90kg/m of water3 . The porous concrete provided by the invention has excellent compressive strength and water permeability, but has complex components and high cost, and is difficult to apply in engineering.
Chinese patent CN 108609970A discloses a high-strength slow-setting type plant-growing concrete and a preparation method thereof, wherein the raw materials used in the concrete comprise the following components in parts by weight: 71-85 parts of stones and cement
10-18 parts of pumice powder, 1.1-2.4 parts of water, 2.15-4.45 parts of water, 0.15-0.24 part of water reducing agent, 0.005-0.04 part of graphene oxide powder, 10-15 parts of concentrated sulfuric acid and 0.01-0.03 part of sodium lignosulfonate. The graphene oxide can obviously improve the strength of the fast-hardening early-strength sulphoaluminate cement matrix, and can ensure that the plant-growing concrete has enough pores for plants to grow; the S-GO polycarboxylic acid additive can play a role in improving the fluidity of the quick-hardening early-strength sulphoaluminate cement and prolonging the setting time of the quick-hardening early-strength sulphoaluminate cement; the volcanic ash effect of the pumice powder can improve the strength of the plant concrete and consume more alkaline substances in the concrete, thereby reducing the alkalinity of the plant concrete and being beneficial to plant growth. The plant growing concrete provided by the invention reduces the pH value of the plant growing soil through concentrated sulfuric acid, and the plant growing effect is poor.
In conclusion, the existing porous concrete has the problems of high cost, complex components, low porosity, poor vegetation effect and the like. At present, no zeolite is disclosed to be used as aggregate of the plant-growing concrete, so that the zeolite is used as the coarse aggregate of the plant-growing concrete to replace stones, and a new thought is provided for the plant-growing concrete.
Disclosure of Invention
The invention aims to provide high-strength zeolite porous plant-growing concrete and a preparation method thereof. According to the invention, zeolite is used as a coarse aggregate, low-alkalinity sulphoaluminate cement is used as a cementing material, and in order to improve the mechanical property of zeolite plant-growing concrete and reduce the pH value of a pore solution, a special reinforcing agent for plant-growing concrete is adopted to replace part of low-alkalinity sulphoaluminate cement, so that the zeolite plant-growing concrete has good mechanical property, and can better meet the requirement of river bank protection in south regions.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 1050 parts of 900-1050 parts of zeolite, 320 parts of 260-320 parts of cement, 4-15 parts of reinforcing agent and 130 parts of 120-130 parts of water; the reinforcing agent consists of sodium nitrite, a polycarboxylic acid high-efficiency water reducing agent and lignosulfonate.
As a preferred technical scheme of the invention: the mass ratio of sodium nitrite to polycarboxylic acid high-efficiency water reducing agent to lignosulfonate in the reinforcing agent is 1:1-3: 2-5. Most preferably, the mass ratio of the sodium nitrite to the polycarboxylic acid high-efficiency water reducing agent to the lignosulfonate in the reinforcing agent is 7:15: 22.
As a preferred technical scheme of the invention: the mixing amount of the reinforcing agent is 5 percent of the mass of the cement.
As a preferred technical scheme of the invention: the zeolite is natural zeolite with the particle size of 10-30 mm. Through multiple tests, the concrete prepared by adopting the natural zeolite with the particle size of 10-20 mm or the zeolite with the particle size of 10-20 mm and 20-30 mm in the secondary composition is not as good as the concrete with the particle size of 20-30 mm in water permeability because the concrete with the particle size of 10-20 mm has lower porosity and is not good in water permeability. Therefore, the preferable scheme of the invention is that the particle size of the zeolite is 20-30 mm, the water absorption rate is 8.3%, and the compact packing density is 1435 kg.m-3Apparent density of 1800 kg.m-3。
As a preferred technical scheme of the invention: the cement is low-alkalinity sulphoaluminate cement.
The invention also provides a preparation method of the high-strength zeolite porous plant-growing concrete, which comprises the steps of weighing the raw materials according to the method, adding part of water, cement, reinforcing agent and all zeolite pre-slurry wrapping methods, uniformly stirring, adding the rest raw materials, and stirring for 2-3 min to obtain the zeolite porous plant-growing concrete.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the invention, zeolite is used as a coarse aggregate, low-alkalinity sulphoaluminate cement is used as a cementing material, and in order to improve the mechanical property of zeolite plant-growing concrete and reduce the pH value of a pore solution, a special reinforcing agent for plant-growing concrete is adopted to replace part of low-alkalinity sulphoaluminate cement, so that the zeolite plant-growing concrete has good mechanical property, and can better meet the requirement of river bank protection in south regions.
2. The porous plant-growing concrete prepared by the invention adopts proper zeolite particle size and optimal water-cement ratio and slurry-bone ratio, so that physical and mechanical performance indexes such as compressive strength, water permeability and the like are correspondingly improved, the pH value of the concrete is within the range of 9.0-10.5, and the problem of overhigh pH value of the plant-growing concrete is solved.
3. According to the invention, sodium nitrite, a polycarboxylic acid high-efficiency water reducing agent and lignosulfonate are used as reinforcing agents, and when the lignosulfonate is compounded with the polycarboxylic acid water reducing agent, the dispersing performance of the polycarboxylic acid water reducing agent can be improved, and the compactness of concrete is improved;sodium nitrite early strength agent promotes C3AFt and C in A direction3S and C2S to Ca (OH)2Thereby promoting the improvement of the early strength of the concrete.
Drawings
FIG. 1 is a graph showing the planting effect of alfalfa in the zeolite porous planting concrete of example 1;
FIG. 2 is a graph showing the effect of planting tall fescue in the zeolite porous planting concrete of example 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of 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.
Example 1
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 900 parts of zeolite, 285 parts of cement, 0.7 part of sodium nitrite, 1.5 parts of polycarboxylic acid high-efficiency water reducing agent, 2.2 parts of lignosulfonate and 125 parts of water. The used zeolite has a particle size of 20-30 mm, a water absorption of 8.3% and a compact packing density of 1435kg-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 2
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 900 parts of zeolite, 285 parts of cement, 1.4 parts of sodium nitrite, 3.1 parts of polycarboxylic acid high-efficiency water reducing agent, 4.3 parts of lignosulfonate and 125 parts of water. The used zeolite has a particle size of 20-30 mm, a water absorption of 8.3% and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 3
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 900 portions of zeolite,285 parts of cement, 2.1 parts of sodium nitrite, 4.6 parts of polycarboxylic acid high-efficiency water reducing agent, 6.5 parts of lignosulfonate and 125 parts of water. The used zeolite has a particle size of 20-30 mm, a water absorption of 8.3% and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 4
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 900 parts of zeolite, 300 parts of cement, 0.7 part of sodium nitrite, 1.5 parts of polycarboxylic acid high-efficiency water reducing agent, 2.2 parts of lignosulfonate and 125 parts of water. The zeolite has a particle size of 10-20 mmmm, a water absorption of 8.3%, and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 5
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 1000 parts of zeolite, 306 parts of cement, 1.2 parts of sodium nitrite, 2.8 parts of polycarboxylic acid high-efficiency water reducing agent, 5 parts of lignosulfonate and 130 parts of water. The zeolite has particle size of 10-20 mm and 20-30 mm (volume ratio of 1: 1), water absorption of 8.3%, and compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 6
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 950 parts of zeolite, 312 parts of cement, 3.0 parts of sodium nitrite, 4 parts of polycarboxylic acid high-efficiency water reducing agent, 6 parts of lignosulfonate and 125 parts of water. The zeolite has a particle size of 20-30 mm, a water absorption of 8.3%, and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Example 7
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 935 parts of zeolite, 279 parts of cement, 1.2 parts of sodium nitrite, 2.4 parts of polycarboxylic acid high-efficiency water reducing agent and wood3.6 parts of lignin sulfonate and 127 parts of water. The zeolite has a particle size of 20-30 mm, a water absorption of 8.3%, and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Comparative example
The high-strength zeolite porous plant-growing concrete is prepared from the following raw materials in parts by weight: 935 parts of zeolite, 279 parts of cement and 127 parts of water. The zeolite has a particle size of 20-30 mm, a water absorption of 8.3%, and a compact packing density of 1435 kg.m-3Apparent density of 1800 kg.m-3. The cement used is PO42.5 low alkalinity sulphoaluminate cement.
Product performance testing
(1) The test was carried out using 150mm by 150mm prism test pieces, one set of which was used as three test pieces.
(2) Stirring by adopting a pre-coating slurry method, preparing the zeolite porous plant growing concrete according to the mixture ratio of the embodiments 1-7 and the comparative example, adding part of water, cement and reinforcing agent into the zeolite porous plant growing concrete, uniformly stirring the mixture by adopting the pre-coating slurry method, then adding the rest water and the cementing material, and stopping stirring the mixture for 180 s.
(3) After the mixture is uniformly stirred, manual vibration and static pressing are combined, the zeolite plant-growing concrete mixture is loaded into a test mold in two layers for manual vibration, and the upper surface of the concrete is leveled in a manual static pressing mode.
(4) And placing the test block number into a standard curing room with the temperature of (20 +/-2) DEG C and the relative humidity of more than 95 percent, curing to the corresponding age and carrying out performance test.
Table 1: the performance test result of the zeolite porous plant-growing concrete provided by the invention
As can be seen from Table 1, with the increase of the amount of the reinforcing agent, the compressive strength of the zeolite plant concrete 7d and 28d tends to increase, and the total porosity, the interconnected porosity and the water permeability coefficient tend to decrease. When more lignosulfonate is compounded with part of polycarboxylate superplasticizer, the dispersing performance of the polycarboxylate superplasticizer can be improved, and the compactness of concrete is improved; the sodium nitrite early strength agent promotes the C3A to AFt, C3S and C2S to Ca (OH)2Thereby promoting the improvement of the early strength of the concrete. The proportion of the embodiment 1 is the optimal embodiment, the pH value of the vegetation concrete pore solution is 9.91, and is greatly reduced compared with the control example, the total porosity, the interconnected porosity and the water permeability coefficient under the doping amount are reduced a little compared with the control example, and the vegetation requirement is still met. However, the larger the mixing amount of the reinforcing agent, the pH value is continuously increased, and the porosity is continuously reduced. Therefore, when the mixture ratio of the embodiment 1 is selected, the zeolite plant growth concrete has the best plant growth effect, the mechanical property can meet the requirement, and the cost is lower.
Test for plant growth
The zeolite plant growth concrete prepared in example 1 was subjected to a plant growth test using alfalfa and tall fescue, and the test results are shown in fig. 1 and 2.
As can be seen from the figure, the germination of the alfalfa is relatively quick, the alfalfa sprouts after 3d sowing, and the plant height is 6-7 mm; the height of the seedlings reaches 55mm 15d after sowing, and the growth vigor is better 30d after sowing. Meanwhile, the growth of the tall fescue is also rapid. After 3d of sowing, the seeds begin to bud, and the height of the plants reaches 5-6 mm. After 15 days of sowing, the height is about 110mm, and the festuca arundinacea grows well after 30 days.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and such substitutions and modifications are to be considered as within the scope of the invention.
Claims (8)
1. The high-strength zeolite porous plant-growing concrete is characterized in that: the composition is prepared from the following raw materials in parts by weight: 1050 parts of 900-1050 parts of zeolite, 320 parts of 260-320 parts of cement, 4-15 parts of reinforcing agent and 130 parts of 120-130 parts of water; the reinforcing agent consists of sodium nitrite, a polycarboxylic acid high-efficiency water reducing agent and lignosulfonate.
2. The high strength zeolite porous green concrete according to claim 1, wherein: the mass ratio of the sodium nitrite to the polycarboxylic acid high-efficiency water reducing agent to the lignosulfonate in the reinforcing agent is 1:1-3: 2-5.
3. The high strength zeolite porous green concrete according to claim 2, wherein: the mass ratio of the sodium nitrite to the polycarboxylic acid high-efficiency water reducing agent to the lignosulfonate in the reinforcing agent is 7:15: 22.
4. The high strength zeolite porous green concrete according to claim 1, wherein: the zeolite is natural zeolite with the particle size of 10-30 mm.
5. The high strength zeolite porous green concrete according to claim 5, wherein: the particle size of the zeolite is 20-30 mm, the water absorption rate is 8.3%, and the compact packing density is 1435 kg.m-3Apparent density of 1800 kg.m-3。
6. The high strength zeolite porous green concrete according to claim 1, wherein: the cement is low-alkalinity sulphoaluminate cement.
7. The high strength zeolite porous green concrete according to claim 1, wherein: the porous plant-growing concrete is prepared from the following raw materials in parts by weight: 900 parts of zeolite, 285 parts of cement, 0.7 part of sodium nitrite, 1.5 parts of polycarboxylic acid high-efficiency water reducing agent, 2.2 parts of lignosulfonate and 125 parts of water.
8. The method for preparing a high-strength zeolite porous concrete for plant growth as claimed in any one of claims 1 to 7, wherein: weighing the raw materials according to the method, adding part of water, cement, a reinforcing agent and all the zeolite, uniformly stirring by a pre-slurry wrapping method, then adding the rest raw materials, and stirring for 2-3 min to obtain the zeolite porous plant-growing concrete.
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| KR20050032921A (en) * | 2003-10-02 | 2005-04-08 | 상원개발산업주식회사 | The product of green planting porous concrete using industrial wastes and recycling aggregate |
| CN102584095A (en) * | 2012-02-13 | 2012-07-18 | 江苏大学 | Admixture for vegetation-form ecological concrete and compounding method thereof |
| CN105418039A (en) * | 2015-12-23 | 2016-03-23 | 济南大学 | Slow-release fertilizer effect based porous ecological concrete and preparation method therefor |
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| CN109867498A (en) * | 2019-03-04 | 2019-06-11 | 江苏锦宇环境工程有限公司 | A kind of preparation method of high water-permeability concrete for plant growth |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050032921A (en) * | 2003-10-02 | 2005-04-08 | 상원개발산업주식회사 | The product of green planting porous concrete using industrial wastes and recycling aggregate |
| CN102584095A (en) * | 2012-02-13 | 2012-07-18 | 江苏大学 | Admixture for vegetation-form ecological concrete and compounding method thereof |
| CN105418039A (en) * | 2015-12-23 | 2016-03-23 | 济南大学 | Slow-release fertilizer effect based porous ecological concrete and preparation method therefor |
| CN106186885A (en) * | 2016-07-20 | 2016-12-07 | 南通天蓝环保能源成套设备有限公司 | A kind of technique of construction refuse regenerated aggregate pervious concrete |
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