CN108164224B - Preparation method of environment-friendly pervious concrete for highway engineering - Google Patents
Preparation method of environment-friendly pervious concrete for highway engineering Download PDFInfo
- Publication number
- CN108164224B CN108164224B CN201810258706.6A CN201810258706A CN108164224B CN 108164224 B CN108164224 B CN 108164224B CN 201810258706 A CN201810258706 A CN 201810258706A CN 108164224 B CN108164224 B CN 108164224B
- Authority
- CN
- China
- Prior art keywords
- environment
- pervious concrete
- fiber
- regenerated
- friendly pervious
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
Landscapes
- 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)
Abstract
The invention discloses an environment-friendly pervious concrete for highway engineering. The environment-friendly pervious concrete is prepared from the following raw materials: cement, palm ash, coarse aggregate, porous fine aggregate, fiber reinforcing agent, micro silicon powder and water. The invention also discloses a preparation method of the composition. Compared with the prior art, the invention adopts ash-palm ash, regenerated polyethylene fiber and regenerated polypropylene fiber which are obtained after palm shells are combusted as concrete reinforced raw materials, changes waste into valuable, reasonably utilizes resources and has very important significance to the environmental protection industry; moreover, the environment-friendly pervious concrete for highway engineering provided by the invention has the advantages that the compressive resistance is ensured, the water permeability is obviously improved, and the construction of highway functional roads can be completed.
Description
Technical Field
The invention relates to pervious concrete, in particular to environment-friendly pervious concrete for highway engineering.
Background
Pervious concrete
The pervious concrete is used as a novel pavement paving material with high permeability, and has good ecological environmental benefit. The continuous expansion of modern cities causes the destruction of forests, grasslands and cultivated lands in large areas, so that originally virtuous circle of life is seriously destroyed, and the paving of the traditional concrete water-blocking pavement material which is impermeable and airtight in large areas causes great pressure on virtuous circle of the urban ecological environment. The increasingly serious urban 'heat island effect' has serious influence on the exchange of water vapor and heat of cities, because urban buildings are dense, the heat absorbed by asphalt pavements and concrete cement pavements in the daytime is very large, the asphalt pavements and the concrete cement pavements have larger specific heat capacity compared with soil, the temperature reduction is slow at night, and the temperature reduction in suburbs is fast, so that the warm air flow in the cities rises, the cold air flow in the suburbs falls, and a typical suburb circulation flow is formed, various pollutants in the air continuously circularly drift over the cities under the action of the local air flow circulation, great harm is caused to the ecological environment of the cities and the healthy life of people, and various diseases are caused. The pervious concrete can relieve the development of the ill condition of the city, has certain water permeability, and the whole paving system has certain water retention property, so that rainwater can permeate into the ground to supplement underground water. The permeable performance of the permeable concrete is very close to the characteristics of soil, and the paving system of the permeable concrete and the microorganisms in the soil below the paving system can purify harmful substances in rainwater, so that the effect of cleaning rainwater is achieved, and when the atmospheric temperature is high, underground water can be evaporated into the atmosphere through the permeable bricks, so that the ecological environment of a city is improved.
China recognizes the importance of protecting the environment, maintaining ecological balance and developing roads sustainably, so the environment-friendly ecological water-permeable concrete is expected to be applied to various roads and bearing pavements to improve the ecological environment and form a 'sponge' city. However, the problem of the contradiction between the water permeability and the strength of the pervious concrete is a bottleneck for preventing the pervious concrete from being used on a large scale. Although the strength of the pervious concrete is improved by using the rubber powder, improving the dispersibility and utilizing the composite gel material and the like, the pervious concrete mainly depends on the coarse aggregate to form larger pore passages and porosity to achieve the purpose of pervious concrete, so the lack of the fine aggregate causes the bonding interface agent to be small and the improvement of the strength to be extremely limited. The use of the pervious concrete on high-load pavements such as urban roads, expressways and the like is limited. Even if the fine aggregate is used, the cement slurry and the fine aggregate are easy to sink and flow to block the lower pores in the construction process, so that the water permeability is influenced, and great difficulty is caused to the construction of the pervious concrete.
Disclosure of Invention
Aiming at the defects of poor strength and water permeability and difficulty in construction control of the existing pervious concrete, the invention provides environment-friendly pervious concrete for highway engineering, which comprises the following raw materials: cement, palm ash, coarse aggregate, porous fine aggregate, fiber reinforcing agent, micro silicon powder and water.
Preferably, the environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 10-40% of cement, 1-15% of palm ash, 6-10% of porous fine aggregate, 3-8% of fiber reinforcing agent, 1-3% of silica fume, 5-10% of water and the balance of coarse aggregate.
Further preferably, the environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 10-18% of cement, 1.8-8% of palm ash, 6-10% of porous fine aggregate, 3-8% of fiber reinforcing agent, 1-3% of silica fume, 5-10% of water and the balance of coarse aggregate.
Preferably, the cement is portland cement.
Preferably, the palm ash is ash obtained by burning palm shells.
The palm ash is mainly composed of a large amount of silicon dioxide, potassium oxide, calcium oxide and other components, wherein the content of the silicon dioxide is up to 20% -50%, the palm ash is waste after the palm shells are used as fuel, and the solid waste has good prospects when being used as a binder in pervious concrete. Firstly, the waste is very abundant and low in price; secondly, these wastes can cause environmental pollution if discarded. The wastes are utilized, so that the waste is changed into valuable, and the method has very important significance for multi-environment protection.
Meanwhile, the palm ash is used as a porous material, has large specific surface area and very high surface energy, and according to the principle of lowest energy, the metal compound surface dispersed in the internal space of the concrete can partially adsorb concrete components, so that the bonding strength of an interface adsorption layer is improved, various performances of the concrete are improved, and the palm ash can replace mineral powder in the concrete mixture, thereby achieving two purposes at one stroke.
Preferably, the porous fine aggregate is porous silicon carbide ceramic particles and/or expanded vermiculite; the particle size of the porous silicon carbide ceramic particles is 2-4 mm; the particle size of the expanded vermiculite is 2-4 mm.
Preferably, the porous fine aggregate is formed by mixing porous silicon carbide ceramic particles and expanded vermiculite according to the mass ratio of 1: 1.8.
Preferably, the preparation method of the porous silicon carbide ceramic particles comprises the following steps: mixing SiC powder and Al2O3Adding the powder and graphite into ethanol, stirring and mixing uniformly, drying and pressing into a green body; placing the blank into a muffle furnace for high-temperature calcination, and cooling to room temperature after the calcination to obtain a porous SiC ceramic wafer; and crushing the porous SiC ceramic wafer by using a crusher to obtain porous SiC ceramic particles.
The porous SiC ceramic particles have good specific surface area, rich pores and good structural strength.
The expanded vermiculite has good cation exchange performance and adsorption performance, so that the structure of concrete can be improved, and the air permeability of soil can be improved.
Preferably, the fiber reinforcing agent is a regenerated polyethylene fiber and/or a regenerated polypropylene fiber; the regenerated polyethylene fibers and the regenerated polypropylene fibers are respectively prepared from waste polyethylene and waste polypropylene; the diameter of the regenerated polyethylene fiber and the regenerated polypropylene fiber is 1.0-1.5 mm, and the length of the regenerated polyethylene fiber and the regenerated polypropylene fiber is 20-40 mm.
As one preferable method, the fiber reinforcing agent is prepared by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fibers and the regenerated polypropylene fibers are respectively prepared from waste polyethylene and waste polypropylene; the diameter of the regenerated polyethylene fiber and the regenerated polypropylene fiber is 1.0-1.5 mm, and the length of the regenerated polyethylene fiber and the regenerated polypropylene fiber is 20-40 mm.
At present, the waste plastics in China are abundant in resources, but cannot be effectively and comprehensively utilized, and the burning and the landfill of the waste plastics cause environmental pollution and great harm, so that the waste plastics are a great social problem. The invention prepares the waste polyethylene and the waste polypropylene plastic into the regenerated polyethylene fiber and the regenerated polypropylene fiber, and applies the regenerated polyethylene fiber and the regenerated polypropylene fiber to the environment-friendly pervious concrete, thereby relieving the white pollution problem and the environment pollution problem caused by the waste plastic to a certain extent and having very important significance for the environmental protection industry.
Preferably, the coarse aggregate is crushed granite; the particle size of the broken granite is 5-7 mm.
As one preferable scheme, the coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, uniformly mixing cement, palm ash, porous fine aggregate, fiber reinforcing agent and micro silicon powder to form dry powder;
s3, adding water into the dry powder, and stirring for 30-60S to obtain a mixture;
and (S4) adding the coarse aggregate into the mixture, and stirring for 2-4 min to obtain the environment-friendly pervious concrete for highway engineering.
The invention has the beneficial effects that:
1. the environment-friendly pervious concrete for highway engineering adopts ash-palm ash, regenerated polyethylene fibers and regenerated polypropylene fibers obtained after combustion of palm shells as concrete reinforcing raw materials, changes waste into valuable, reasonably utilizes resources, and has very important significance for the environmental protection industry.
2. The environment-friendly pervious concrete for highway engineering has the compressive strength of more than or equal to 65.8MPa and the water permeability of more than or equal to 6.1MPa, and has excellent compressive performance and water permeability.
Detailed Description
The technical solutions of the present invention are further illustrated and described below by specific examples, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.
Comparative example 1
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 17.8% of cement, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement, the factory standard is P.O 42.5.5, western large kiln of beacon city in liaoning province.
The porous fine aggregate is expanded vermiculite; the particle size of the expanded vermiculite is 2 mm.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring the cement, the porous fine aggregate, the fiber reinforcing agent and the micro silicon powder in a concrete mixer at the rotating speed of 250r/min for 10min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 1
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 16% of cement, 1.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is expanded vermiculite; the particle size of the expanded vermiculite is 2 mm.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 2
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 14% of cement, 3.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is expanded vermiculite; the particle size of the expanded vermiculite is 2 mm.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 3
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 12% of cement, 5.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is expanded vermiculite; the particle size of the expanded vermiculite is 2 mm.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 4
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 10% of cement, 7.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is expanded vermiculite; the particle size of the expanded vermiculite is 2 mm.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 5
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 10% of cement, 7.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is porous silicon carbide ceramic particles. The particle size of the porous silicon carbide ceramic particles is 3 mm.
The preparation method of the porous silicon carbide ceramic particles comprises the following steps: taking 70g of SiC and 20g of Al2O3Adding 15g of graphite into 100mL of ethanol, ball-milling for 24h in a ball mill, uniformly mixing, drying for 30min at 105 ℃, and sieving by a 50-mesh sieve; then pressing the mixture into a rectangular strip-shaped blank body with the thickness of 8mm multiplied by 4mm by unidirectional pressurization at 30 MPa; putting the blank into a constant-temperature drying box, and drying for 24 hours at 110 ℃; cooling to room temperature of 25 deg.C, placing in a muffle furnace, heating from 25 deg.C to 950 deg.C at a heating rate of 3 deg.C/min, maintaining at 950 deg.C for 2h, heating from 950 deg.C to 1500 deg.C at a heating rate of 5 deg.C/min, and maintaining at 1500 deg.C for 2.5 h; finally, naturally cooling to room temperature of 25 ℃ to obtain a porous silicon carbide ceramic wafer; finally, a hammer stone sander (Weir International mining equipment, Inc. in Jiangxi province) is used for smashing the porous SiC ceramic wafer to the particle size of 3mm, namely, porous silicon carbide ceramic particles are obtained; 5 alumina balls with the diameter of 6mm are arranged in the ball mill; the Mohs hardness of the alumina spheres is 9.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
Example 6
The environment-friendly pervious concrete for highway engineering is prepared from the following raw materials in percentage by mass: 10% of cement, 7.8% of palm ash, 6% of porous fine aggregate, 3.5% of fiber reinforcing agent, 1% of silica fume, 5.6% of water and the balance of coarse aggregate.
The cement is portland cement. Ex-factory standard P.O 42.5.5, West kiln, Beacon, Liaoning province.
The palm ash is ash generated after palm shells are combusted; the palm ash has the parameters shown in table 1.
The porous fine aggregate is formed by mixing porous silicon carbide ceramic particles and expanded vermiculite according to the mass ratio of 1: 1.8. The particle size of the porous silicon carbide ceramic particles is 3 mm; the particle size of the expanded vermiculite is 2 mm.
The preparation method of the porous silicon carbide ceramic particles comprises the following steps: taking 70g of SiC and 20g of Al2O3Adding 15g of graphite into 100mL of ethanol, ball-milling for 24h in a ball mill, uniformly mixing, drying for 30min at 105 ℃, and sieving by a 50-mesh sieve; then pressing the mixture into a rectangular strip-shaped blank body with the thickness of 8mm multiplied by 4mm by unidirectional pressurization at 30 MPa; putting the blank into a constant-temperature drying box, and drying for 24 hours at 110 ℃; cooling to room temperature of 25 deg.C, placing in a muffle furnace, heating from 25 deg.C to 950 deg.C at a heating rate of 3 deg.C/min, maintaining at 950 deg.C for 2h, heating from 950 deg.C to 1500 deg.C at a heating rate of 5 deg.C/min, and maintaining at 1500 deg.C for 2.5 h; finally, naturally cooling to room temperature of 25 ℃ to obtain a porous silicon carbide ceramic wafer; finally, a hammer stone sander (Weir International mining equipment, Inc. in Jiangxi province) is used for smashing the porous SiC ceramic wafer to the particle size of 3mm, namely, porous silicon carbide ceramic particles are obtained; 5 alumina balls with the diameter of 6mm are arranged in the ball mill; mohs hardness of the alumina spheresThe degree is 9.
The fiber reinforcing agent is obtained by mixing regenerated polyethylene fibers and regenerated polypropylene fibers according to the mass ratio of 1: 1.5; the regenerated polyethylene fiber is purchased from Talili chemical fiber products, Inc., Huimin county, has the tensile strength of 10.5cN/dtex, the diameter of 1mm and the length of 25 mm; the regenerated polypropylene fiber is purchased from Shanghai Hughai industry Co., Ltd, has the compressive strength of 450MPa, the diameter of 1.2mm and the length of 40 mm.
The micro silicon powder is commercially available, the average particle size is 0.15 mu m, and the specific surface area is 20m2/g。
The coarse aggregate is crushed granite with the particle size of 6.3 mm.
A preparation method of environment-friendly pervious concrete for highway engineering comprises the following steps:
s1, weighing the raw materials according to mass percentage;
s2, stirring cement, palm ash, porous fine aggregate, fiber reinforcing agent and silica fume in a concrete mixer for 10min at the rotating speed of 250r/min to form dry powder;
s3, adding water into the dry powder, and stirring for 40S at the rotating speed of 250r/min to obtain a mixture;
and S4, adding the coarse aggregate into the mixture, and stirring for 3min at the rotating speed of 250r/min to obtain the environment-friendly pervious concrete for highway engineering.
In the examples, the sources of the raw materials are as follows:
the cement of the invention is ordinary portland cement, which has a delivery standard of P.O 42.5.5, western large kiln of beacon city in Liaoning province.
SiC: the particle diameter is 100nm, and the density is 3.20g/cm3Xuzhou Jie innovative materials have limited technology.
Al2O3: particle size 80nm, Nanjing Tianxing New Material Co., Ltd.
Graphite: 1000 mesh, Qingdao Tianyue graphite Co., Ltd.
TABLE 1 content of each component in palm Ash
| Content (wt%) | |
| CaO | 8.2 |
| SiO2 | 48.6 |
| Al2O3 | 8.7 |
| Fe2O3 | 10.5 |
| MgO | 4.6 |
| SO3 | 2.8 |
| K2O | 3.6 |
Test example 1
The compression strength test of the environment-friendly pervious concrete for road engineering in examples 1 to 6 and comparative example 1 was carried out according to the general concrete mechanical property test method (GB/T50081-2002) and the curing period was 28 days.
Water permeability test the environmental-friendly pervious concrete for road engineering of examples 1 to 6 and comparative example 1 was subjected to a water permeability test according to the preparation and performance research of wang jade "mineral polymer pervious concrete" 2.3.4 water permeability test of 2.3.4 water permeability level paper of west ann building science and technology university of 2017.
TABLE 2 compressive strength and Water permeability of the eco-friendly pervious concrete of the present invention
| Examples | Compressive strength (MPa) | Coefficient of water permeability (mm/s) |
| Comparative example 1 | 66.3 | 5.0 |
| Example 1 | 65.8 | 6.1 |
| Example 2 | 65.2 | 6.3 |
| Example 3 | 64.4 | 6.8 |
| Example 4 | 64.2 | 7.5 |
| Example 5 | 68.6 | 8.2 |
| Example 6 | 72.5 | 10.1 |
Claims (5)
1. The environment-friendly pervious concrete for highway engineering is characterized by being prepared from the following raw materials in percentage by mass: 10-18% of cement, 1.8-8% of palm ash, 6-10% of porous fine aggregate, 3-8% of fiber reinforcing agent, 1-3% of silica fume, 5-10% of water and the balance of coarse aggregate; the porous fine aggregate is formed by mixing porous silicon carbide ceramic particles and expanded vermiculite according to the mass ratio of 1: 1.8; the fiber reinforcing agent is a regenerated polyethylene fiber and/or a regenerated polypropylene fiber; the regenerated polyethylene fibers and the regenerated polypropylene fibers are respectively prepared from waste polyethylene fibers and waste polypropylene fibers; the diameter of the regenerated polyethylene fiber or the regenerated polypropylene fiber is 1.0-1.5 mm, and the length of the regenerated polyethylene fiber or the regenerated polypropylene fiber is 20-40 mm.
2. The environment-friendly pervious concrete for road engineering according to claim 1, wherein: the cement is portland cement.
3. The environment-friendly pervious concrete for road engineering according to claim 1, wherein: the palm ash is ash generated after palm shells are combusted.
4. The environment-friendly pervious concrete for road engineering according to claim 1, wherein: the coarse aggregate is crushed granite; the particle size of the broken granite is 5-7 mm.
5. The preparation method of the environment-friendly pervious concrete for highway engineering according to any one of claims 1-4, characterized by comprising the following steps:
s1, weighing the raw materials according to mass percentage;
s2, uniformly mixing cement, palm ash, porous fine aggregate, fiber reinforcing agent and micro silicon powder to form dry powder;
s3, adding water into the dry powder, and stirring for 30-60S to obtain a mixture;
and (S4) adding the coarse aggregate into the mixture, and stirring for 2-4 min to obtain the environment-friendly pervious concrete for highway engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258706.6A CN108164224B (en) | 2018-03-27 | 2018-03-27 | Preparation method of environment-friendly pervious concrete for highway engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258706.6A CN108164224B (en) | 2018-03-27 | 2018-03-27 | Preparation method of environment-friendly pervious concrete for highway engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108164224A CN108164224A (en) | 2018-06-15 |
| CN108164224B true CN108164224B (en) | 2020-12-18 |
Family
ID=62511388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810258706.6A Active CN108164224B (en) | 2018-03-27 | 2018-03-27 | Preparation method of environment-friendly pervious concrete for highway engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108164224B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109503050A (en) * | 2018-12-03 | 2019-03-22 | 嘉兴市康立德构件有限公司 | A kind of concrete and preparation method thereof |
| CN109704618A (en) * | 2019-01-11 | 2019-05-03 | 深鹏环保工程有限公司 | A kind of dregs compression strength of building block reinforcing agent and preparation method |
| CN109942242A (en) * | 2019-01-24 | 2019-06-28 | 安徽虹达道路桥梁工程有限公司 | A kind of preparation method of the environment friendly pervious concrete of highway engineering |
| CN110981307A (en) * | 2019-12-18 | 2020-04-10 | 山西佳维新材料股份有限公司 | Regenerated pervious concrete and preparation method thereof |
| CN110981366A (en) * | 2019-12-27 | 2020-04-10 | 中国矿业大学 | Preparation and construction method of porous coral aggregate permeable purified concrete |
| CN114349530B (en) * | 2022-01-28 | 2023-05-09 | 三亚城投众辉新型建材有限公司 | Water permeable brick based on waste stone powder and preparation process thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145982B (en) * | 2010-02-09 | 2013-05-29 | 中冶宝钢技术服务有限公司 | Preparation method of steel slag permeable concrete |
| CN103641374B (en) * | 2013-11-26 | 2015-03-11 | 成都新柯力化工科技有限公司 | Pervious concrete additive and preparation method thereof |
-
2018
- 2018-03-27 CN CN201810258706.6A patent/CN108164224B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108164224A (en) | 2018-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108164224B (en) | Preparation method of environment-friendly pervious concrete for highway engineering | |
| CN101955349B (en) | Sintered permeable environmental-friendly brick produced by using ceramic waste residue and manufacturing method thereof | |
| KR101214596B1 (en) | Permeable concrete composition using cement and geopolymer binder, and bottom ash aggregate and making method of the same | |
| CN111233395B (en) | High-strength pervious concrete and preparation method thereof | |
| CN101994283B (en) | Steamed ecological water permeable environmentally friendly brick produced by waste ceramic residues and manufacturing method thereof | |
| CN104018409B (en) | A kind of mixed type pervious concrete pavement structure of sustainability | |
| CN102418308A (en) | Water permeable bricks produced by using building waste residue and manufacturing method thereof | |
| CN109626925B (en) | Preparation method of phosphogypsum roadbed material based on high-temperature activation and hydraulic property improvement | |
| CN107365164B (en) | Fine powder waste residue water-permeable sintered pavement brick and preparation method thereof | |
| CN108774041B (en) | Water permeable brick using artificial carbonized steel slag balls as aggregate and preparation method thereof | |
| CN110606720B (en) | Preparation method of high-content fly ash-based water permeable brick | |
| CN105330318A (en) | Multi-pore high-strength sintering permeable floor brick | |
| CN101205697A (en) | Concrete paving brick capable of purifying air and method for manufacturing the same | |
| CN107619297B (en) | Preparation method of tailing ceramsite light permeable brick | |
| CN107445652A (en) | A kind of foamed ceramics waste material pervious concrete and preparation method thereof | |
| CN109626902A (en) | A kind of freeze proof environment friendly pervious brick and preparation method thereof | |
| Zhou et al. | Preparation of artificial lightweight aggregate using alkali-activated incinerator bottom ash from urban sewage sludge | |
| Namarak et al. | Development of concrete paving blocks prepared from waste materials without portland cement | |
| CN107445556A (en) | A kind of granite waste stone dust haydite pervious concrete and preparation method thereof | |
| KR101066194B1 (en) | A water-retentive bottom ash block and its process of manufacture | |
| CN102745961A (en) | Mine mullock pervious concrete and preparation method thereof | |
| Ghosh et al. | A review on performance of pervious concrete using waste materials | |
| Yan et al. | Study on preparation and performance of steel slag asphalt mixture based on steel slag aggregate | |
| CN101412595A (en) | Method for preparing concrete admixture from kaoline tailing | |
| JP2005060159A (en) | Water retentive and water-permeable ceramic block obtained by utilizing inorganic waste material, and producing method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201201 Address after: Room 1163, building 1, 5500 Yuanjiang Road, Minhang District, Shanghai 201100 Applicant after: Shanghai Baishi Industrial Development Co., Ltd Address before: Shanghai City, Jingan District Xikang Road 200040 No. 464 room 402 Applicant before: Liu Qun |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |