CN113683365A - Preparation method of ecological pervious concrete for coastal wetland bank protection material - Google Patents
Preparation method of ecological pervious concrete for coastal wetland bank protection material Download PDFInfo
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- CN113683365A CN113683365A CN202111118115.7A CN202111118115A CN113683365A CN 113683365 A CN113683365 A CN 113683365A CN 202111118115 A CN202111118115 A CN 202111118115A CN 113683365 A CN113683365 A CN 113683365A
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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
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2015—Sulfate resistance
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Revetment (AREA)
Abstract
The invention relates to preparation of ecological pervious concrete based on waste glass fragments and a composite cementing material and application of the ecological pervious concrete as a coastal wetland bank protection material; the concrete is prepared by using agricultural solid waste black rice hull ash to partially replace cement as a main cementing material and adding active blending ingredients such as industrial solid waste fly ash and steel slag powder as auxiliary cementing materials, and the waste glass is crushed and screened and then is mixed with recycled concrete aggregate to replace natural aggregate. The ecological permeable concrete prepared by the invention keeps good porosity (more than 20%), water permeability (permeability coefficient is more than 0.5mm/s) and compressive strength (not less than 20MPa) of the material, and enhances the durability of mortar and the sulfate corrosion resistance of concrete; the renewable materials are used, so that the resource recycling is realized, and the environmental protection policy and the sustainable development characteristic are met; can be used as a shore protection material of the coastal wetland, is beneficial to biological connectivity, and plays a positive role in protecting and restoring the ecology of the coastal wetland.
Description
Technical Field
The invention relates to the fields of ecological environment, ecological restoration engineering and building materials, in particular to a shore protection material for a coastal wetland, namely ecological pervious concrete based on waste glass fragments and a composite cementing material.
Background
The coastal zone is a transition zone between an aquatic ecosystem and a land ecosystem and is also the only channel for surface runoff to enter a river, in recent years, the ecological environment of a coastal wetland is gradually damaged to different degrees due to the discharge of production and domestic sewage, and river mouth revetment is an important subject in the fields of environmental protection and ecological restoration. Large human structures on the earth's surface interfere with natural water circulation, and hardened revetment materials severely impede hydrographic and biological connectivity between wetland systems and the ocean, which results in gradual degradation of coastlines, accumulation of harmful elements, and reduction of biodiversity, especially in fragile coastal wetlands. The traditional bank protection structure obstructs water exchange between a bank slope and a river and obviously influences the living strategy of amphibians and the movement of microorganisms in water, so that a material with good mechanical property and ecological property is urgently needed to meet the requirements of ecological bank protection and restoration of the coastal wetland.
The Ecological Pervious Concrete (EPC) is a material which can be used for ecological revetment and has strong potential, is developed on the basis of pervious concrete, has a complex porous structure, has the compressive strength of 10-15MPa, the porosity of 20-35 percent and the pore diameter range of 5-10mm, can provide a passage for falling water and runoff to enter the ground, thereby generating communication functions of permeation, water storage and the like, and simultaneously provides an ideal space for plant growth and animal life, thereby generating biological connectivity. The EPC is combined with nutrient substances and plants for use, has strong advantages in the aspects of ecological bank protection and restoration of the coastal wetland, is used as a hard material, has higher stability compared with the traditional masonry cage and wood poles, effectively protects the bank slope from being washed by billows, can decompose nitrogen and phosphorus under the EPC water due to the action of precipitation, filtration, absorption and various microorganisms, and is favorable for purifying the water body.
The EPC is generally prepared from a cementitious material, a gap-graded aggregate, an admixture, water and other materials using a mold, and unlike a conventional concrete material, the EPC material does not contain a fine aggregate, and a small amount of a cementitious material is used to fill voids between aggregate particles so that it has a porous structure. Furthermore, the EPC material has relatively low requirements for compressive strength, which provides an opportunity to recycle waste in the production of EPC materials. In the prior art, the used cementing materials are mostly common cement, the aggregates are mostly natural aggregates, and meanwhile, the pervious concrete has more communicated pores, so that the strength, durability and other aspects of the concrete also have many defects, and the concrete is limited in practical use. Therefore, designing and improving the preparation method of ecological pervious concrete is an urgent problem to be solved.
One of the purposes of the invention is to design and develop a sustainable EPC material to replace natural aggregate, save natural resources and relieve the pressure of solid waste and building waste landfill on urban areas; another object of the present invention is to design an eco-concrete material effective in improving water permeability and corrosion resistance, which is better used as a revetment material for coastal wetlands.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a preparation method of ecological pervious concrete based on waste glass fragments and composite gelled materials, which uses agricultural solid waste black rice hull ash to partially replace cement as a main gelled material and adds active blending ingredients such as industrial solid waste fly ash and steel slag powder as auxiliary gelled materials so as to prepare the composite gelled materials, the waste glass is crushed and screened and then mixed with recycled concrete aggregate to replace natural aggregate mineral admixture in a certain mixing amount range, so that the strength and durability of the pervious concrete can be improved, the industrial solid waste such as the fly ash and the waste glass fragments is greatly used, the use of common natural aggregate and cement clinker can be reduced, resources are saved, the environment is protected, the requirement of coastal wetland ecological protection can be better met, and the biological connectivity is facilitated, has remarkable social and economic benefits and application prospect.
The invention provides a preparation method of ecological pervious concrete based on waste glass fragments and a composite cementing material,
the ecological pervious concrete based on the waste glass fragments and the composite cementing material is composed of, by weight, 300 parts of cement, 80-120 parts of an active mineral admixture, 90-150 parts of water and 1150-1500 parts of waste glass fragment aggregates.
The method specifically comprises the following steps:
1) selecting cement and black rice hull ash as main cementing materials, screening the black rice hull ash before grinding to ensure the uniformity of the strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150-micron screen to grind for different times to obtain the black rice hull ash with nanometer size;
2) adding an active mineral admixture serving as an auxiliary material into the cementing material obtained in the step 1) to obtain a composite cementing material;
3) mixing and stirring aggregate and water to obtain the recycled aggregate;
4) mixing and stirring the composite cementing material and water until the cementing material is uniformly attached to the surface of the recycled aggregate to obtain the ecological pervious concrete based on the waste glass fragments and the composite cementing material;
5) and pouring the ecological pervious concrete prepared in the step 4) into a mould, demoulding, and finally curing in a steam chamber.
In the step 1), the cement is ASTM I type ordinary portland cement;
in the step 1), the using amount of the black rice hull ash is 10-90% of the weight of the main cementing material;
in the step 2), the active mineral admixture is formed by mixing fly ash and steel slag powder, and the particle size is between 5 and 10 mm;
in the step 2), the blending amount of the active mineral admixture is 20-50% of the cementing material;
in the step 3), the recycled aggregate is composed of recycled concrete aggregate and ground waste glass fragments;
in the step 3), the mass ratio of the waste glass fragments in the aggregate to the recycled concrete is 1: 1-1: 5;
in the step 3), the particle size of the waste glass fragments is between 2.36 and 5mm, and the particle size of the recycled concrete is between 5 and 10 mm;
in the step 4), the mass ratio of the water to the composite cementing material is 0.1: 1-0.5: 1
In the step 4), the mass ratio of the recycled aggregate to the composite cementing material is 5: 1-1: 1
In the step 5), the temperature of the steam chamber is in the range of 20-80 ℃.
The principle of the invention is that the strength of the material is enhanced by calcium hydroxide generated after the coal ash and the cement are hydrated, the added active mineral admixture can improve the fluidity of the gel material and slow down the hydration of the gel material, so that the gel material can be more uniformly covered on the aggregate, meanwhile, the smaller density of the black rice hull ash can enable the black rice hull ash to have larger volume relative to the silicate cement, when the black rice hull ash partially replaces the cement, the gel material has larger thickness in an interface transition region of the pervious concrete, and the black rice hull ash is beneficial to improving the compressive strength of the ecological pervious concrete.
The invention has the beneficial effects that: the good porosity (more than 20%), water permeability (the water permeability coefficient is more than 0.5mm/s) and compressive strength (not less than 20MPa) of the material are maintained, and the durability of the mortar and the sulfate corrosion resistance of the concrete are enhanced; the renewable materials are used, so that the resource recycling is realized, and the environmental protection policy and the sustainable development characteristic are met; can be used as a shore protection material of the coastal wetland, is beneficial to biological connectivity, and plays a positive role in protecting and restoring the ecology of the coastal wetland.
Detailed Description
Example 1
The ecological pervious concrete based on the waste glass fragments and the composite cementing material is prepared by combining the following materials in parts by weight, wherein the main cementing material comprises 150 parts of fly ash, 40 parts of steel slag powder, 90 parts of water and 1150 parts of aggregate, and the concrete preparation method comprises the following steps:
1. selecting ordinary portland cement of ASTM type I and 10 wt% of black rice hull ash as main gelling materials, screening the black rice hull ash before grinding to ensure uniformity of strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150 μm screen to grind for 10min to obtain black rice hull ash of nanometer size;
2. mixing fly ash and steel slag powder with the particle sizes of 5mm respectively to form an active mineral admixture, and adding the active mineral admixture into the cementing material obtained in the step 1 to obtain a composite cementing material, wherein the active mineral admixture accounts for 20 wt%;
3. mixing recycled concrete aggregate with the particle size of 5mm and ground waste glass fragments with the particle size of 2.36mm according to the mass ratio, adding water, and stirring for 10 s;
4. and (3) mixing and stirring water and the composite cementing material obtained in the step (2) according to the mass ratio of 0.1: 1 until the cementing material is uniformly coated on the surface of the recycled aggregate, thus obtaining the ecological pervious concrete based on the waste glass fragments and the composite cementing material.
5. The ecological pervious concrete is poured into a mould, then demoulding is carried out, and finally, the ecological pervious concrete is solidified in a steam chamber at the temperature of 20 ℃ for 7 days.
The concrete is subjected to performance test, and the test result shows that the concrete has the compressive strength of 20.4MPa, the water permeability coefficient of 0.56mm/s, the porosity of 23 percent, the mass loss rate of 8 percent after 100 times of freeze-thaw cycles, good durability and sulfate corrosion resistance, good hydrological connectivity and biological compatibility, and can be better used for coastal wetland bank protection materials.
Example 2
The ecological pervious concrete based on the waste glass fragments and the composite cementing material is prepared by combining the following materials in parts by weight, wherein the main cementing material comprises 200 parts of fly ash 40 parts, steel slag powder 45 parts, water 100 parts and aggregate 1200 parts, and the concrete preparation method comprises the following steps:
1. selecting ASTM type I portland cement and 40 wt% black rice hull ash as main gelling materials, sieving the black rice hull ash before grinding to ensure uniformity of strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150 μm sieve to grind for 20min to obtain nano-sized black rice hull ash;
2. mixing fly ash and steel slag powder with the particle sizes of 5mm respectively to form an active mineral admixture, and adding the active mineral admixture into the cementing material obtained in the step 1 to obtain a composite cementing material, wherein the active mineral admixture accounts for 30 wt%;
3. mixing recycled concrete aggregate with the particle size of 5mm and ground waste glass fragments with the particle size of 3.5mm according to the mass ratio, adding water, and stirring for 30 s;
4. and (3) mixing and stirring water and the composite cementing material obtained in the step (2) according to the mass ratio of 0.25: 1 until the cementing material is uniformly coated on the surface of the recycled aggregate, thus obtaining the ecological pervious concrete based on the waste glass fragments and the composite cementing material.
5. The ecological pervious concrete is poured into a mould, then demoulding is carried out, and finally, the ecological pervious concrete is solidified in a steam chamber at the temperature of 30 ℃ for 7 days.
The concrete is subjected to performance test, and the test result shows that the concrete has the compressive strength of 21.8MPa, the water permeability coefficient of 0.62mm/s, the porosity of 26 percent, the mass loss rate of 9 percent after 100 times of freeze-thaw cycles, good durability and sulfate corrosion resistance, good hydrological connectivity and biological compatibility, and can be better used for coastal wetland bank protection materials.
Example 3
The ecological pervious concrete based on the waste glass fragments and the composite cementing material is prepared by combining the following materials in parts by weight, wherein the main cementing material is 240 parts, the fly ash is 50 parts, the steel slag powder is 50 parts, the water is 100 parts, and the aggregate is 1350 parts, and the concrete preparation method comprises the following steps:
1. selecting ASTM type I portland cement and 50 wt% black rice hull ash as main gelling materials, screening the black rice hull ash before grinding to ensure uniformity of strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150 μm screen to grind for 30min to obtain nano-sized black rice hull ash;
2. mixing fly ash and steel slag powder with the particle sizes of 5mm respectively to form an active mineral admixture, and adding the active mineral admixture into the cementing material obtained in the step 1 to obtain a composite cementing material, wherein the active mineral admixture accounts for 30 wt%;
3. mixing recycled concrete aggregate with the particle size of 5mm and ground waste glass fragments with the particle size of 3.5mm according to the mass ratio, adding water, and stirring for 60 s;
4. and (3) mixing and stirring water and the composite cementing material obtained in the step (2) according to the mass ratio of 0.34: 1 until the cementing material is uniformly coated on the surface of the recycled aggregate, thus obtaining the ecological pervious concrete based on the waste glass fragments and the composite cementing material.
5. The ecological pervious concrete is poured into a mould, then demoulding is carried out, and finally, the ecological pervious concrete is solidified in a steam chamber at the temperature of 50 ℃ for 7 days.
The concrete is subjected to performance test, and the test result shows that the concrete has the compressive strength of 23.4MPa, the water permeability coefficient of 0.75mm/s, the porosity of 28 percent, the mass loss rate of 9 percent after 100 times of freeze-thaw cycles, good durability and sulfate corrosion resistance, good hydrological connectivity and biological compatibility, and can be better used for coastal wetland bank protection materials.
Example 4
The ecological pervious concrete based on the waste glass fragments and the composite cementing material is prepared by combining the following materials by weight, 280 parts of a main cementing material, 55 parts of fly ash, 50 parts of steel slag powder, 120 parts of water and 1400 parts of aggregate, and the concrete preparation method is as follows:
1. selecting ASTM type I portland cement and 70 wt% black rice hull ash as main gelling materials, screening the black rice hull ash before grinding to ensure uniformity of strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150 μm screen to grind for 50min to obtain nano-sized black rice hull ash;
2. mixing the fly ash and the steel slag powder with the particle sizes of 5mm respectively to form an active mineral admixture, and adding the active mineral admixture into the cementing material obtained in the step 1 to obtain a composite cementing material, wherein the active mineral admixture accounts for 45 wt%;
3. mixing recycled concrete aggregate with the particle size of 5mm and ground waste glass fragments with the particle size of 3.5mm according to the mass ratio, adding water, and stirring for 30 s;
4. and (3) mixing and stirring water and the composite cementing material obtained in the step (2) according to the mass ratio of 0.4: 1 until the cementing material is uniformly coated on the surface of the recycled aggregate, thus obtaining the ecological pervious concrete based on the waste glass fragments and the composite cementing material.
5. The ecological pervious concrete is poured into a mould, then demoulding is carried out, and finally, the ecological pervious concrete is solidified in a steam chamber at the temperature of 60 ℃ for 7 days.
The concrete is subjected to performance test, and the test result shows that the concrete has the compressive strength of 22.5MPa, the water permeability coefficient of 0.58mm/s, the porosity of 24 percent, the mass loss rate of 9 percent after 100 times of freeze-thaw cycles, good durability and sulfate corrosion resistance, good hydrological connectivity and biological compatibility, and can be better used for coastal wetland bank protection materials.
Example 5
The ecological pervious concrete based on the waste glass fragments and the composite cementing material is prepared by combining the following materials in parts by weight, wherein the main cementing material is 300 parts, the fly ash is 60 parts, the steel slag powder is 60 parts, the water is 150 parts, and the aggregate is 1500 parts, and the concrete preparation method comprises the following steps:
1. selecting ASTM type I portland cement and 90 wt% black rice hull ash as main gelling materials, screening the black rice hull ash before grinding to ensure uniformity of strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150 μm screen to grind for 60min to obtain nano-sized black rice hull ash;
2. mixing fly ash and steel slag powder with the particle sizes of 5mm respectively into an active mineral admixture, and adding the active mineral admixture into the cementing material obtained in the step 1 to obtain a composite cementing material, wherein the active mineral admixture accounts for 50 wt%;
3. mixing recycled concrete aggregate with the particle size of 7mm and ground waste glass fragments with the particle size of 5mm in mass ratio, adding water, and stirring for 60 s;
4. and (3) mixing and stirring water and the composite cementing material obtained in the step (2) according to the mass ratio of 0.5: 1 until the cementing material is uniformly coated on the surface of the recycled aggregate, thus obtaining the ecological pervious concrete based on the waste glass fragments and the composite cementing material.
5. The ecological pervious concrete is poured into a mould, then demoulding is carried out, and finally, the ecological pervious concrete is solidified in a steam chamber at the temperature of 80 ℃ for 7 days.
The concrete is subjected to performance test, and the test result shows that the concrete has the compressive strength of 21.6MPa, the water permeability coefficient of 0.63mm/s, the porosity of 24 percent, the mass loss rate of 7 percent after 100 times of freeze-thaw cycles, good durability and sulfate corrosion resistance, good hydrological connectivity and biological compatibility, and can be better used for coastal wetland bank protection materials.
While the methods and techniques of the present invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and/or modifications of the methods and techniques described herein may be made without departing from the spirit and scope of the invention. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and content of the invention. The invention belongs to the known technology.
Claims (10)
1. The preparation method of the ecological pervious concrete based on the waste glass fragments and the composite cementing material comprises the following materials, by weight, 150-300 parts of cement, 80-120 parts of active mineral admixture, 90-150 parts of water and 1150-1500 parts of waste glass fragment aggregate.
The method specifically comprises the following steps:
1) selecting cement and black rice hull ash as main cementing materials, screening the black rice hull ash before grinding to ensure the uniformity of the strength of the black rice hull ash, and then taking out the black rice hull ash passing through a 150-micron screen to grind for different times to obtain the black rice hull ash with nanometer size;
2) adding an active mineral admixture serving as an auxiliary material into the cementing material obtained in the step 1) to obtain a composite cementing material;
3) mixing and stirring aggregate and water to obtain the recycled aggregate;
4) mixing and stirring the composite cementing material and water until the cementing material is uniformly attached to the surface of the recycled aggregate to obtain the ecological pervious concrete based on the waste glass fragments and the composite cementing material;
5) and pouring the ecological pervious concrete prepared in the step 4) into a mould, demoulding, and finally curing in a steam chamber.
2. The method as set forth in claim 1, wherein in said step 1), the cement is ordinary portland cement of astm i type.
3. The method as claimed in claim 1, wherein the black rice hull ash is used in an amount of 10% to 90% by weight of the main cement in step 1).
4. The method as set forth in claim 1, wherein in step 2), the active mineral admixture is formed by mixing fly ash and steel slag powder, and has a particle size of 5-10 mm.
5. The method as set forth in claim 1, wherein in step 2), the blending amount of the mineral admixture is 20% to 50% of the cementitious material.
6. The method as set forth in claim 1, wherein in the step 3), the recycled aggregate is composed of recycled concrete aggregate and ground waste glass fragments.
7. The method as set forth in claim 1, wherein in the step 3), the mass ratio of the waste glass fragments to the recycled concrete in the aggregate is 1: 1 to 1: 5.
8. The method as set forth in claim 1, wherein in the step 3), the particle size of the waste glass cullet is between 2.36 and 5mm, and the particle size of the recycled concrete is between 5 and 10 mm.
9. The method as set forth in claim 1, wherein in the step 4), the mass ratio of water to the composite cementitious material is 0.1: 1 to 0.5: 1.
10. The method as set forth in claim 1, wherein in the step 4), the mass ratio of the recycled aggregate to the composite cementitious material is 5: 1 to 1: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111118115.7A CN113683365A (en) | 2021-09-24 | 2021-09-24 | Preparation method of ecological pervious concrete for coastal wetland bank protection material |
| LU500812A LU500812B1 (en) | 2021-09-24 | 2021-11-02 | Preparation method of ecological pervious concrete of bank protection material for coastal wetlands |
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| CN202111118115.7A CN113683365A (en) | 2021-09-24 | 2021-09-24 | Preparation method of ecological pervious concrete for coastal wetland bank protection material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988794A (en) * | 2022-05-23 | 2022-09-02 | 长江水利委员会长江科学院 | High-strength ecological concrete for river and lake ecological bank protection and test block preparation method |
| CN115010422A (en) * | 2021-12-03 | 2022-09-06 | 华北水利水电大学 | Recycled aggregate pervious concrete based on waste glass particles, preparation method and modification identification method |
-
2021
- 2021-09-24 CN CN202111118115.7A patent/CN113683365A/en active Pending
- 2021-11-02 LU LU500812A patent/LU500812B1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010422A (en) * | 2021-12-03 | 2022-09-06 | 华北水利水电大学 | Recycled aggregate pervious concrete based on waste glass particles, preparation method and modification identification method |
| CN114988794A (en) * | 2022-05-23 | 2022-09-02 | 长江水利委员会长江科学院 | High-strength ecological concrete for river and lake ecological bank protection and test block preparation method |
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| LU500812B1 (en) | 2022-05-02 |
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